FD.io VPP  v20.01-46-g7006026de
Vector Packet Processing
nsim.c
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1 /*
2  * nsim.c - skeleton vpp engine plug-in
3  *
4  * Copyright (c) <current-year> <your-organization>
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 /**
19  * @file
20  * @brief Network Delay Simulator
21  */
22 /*? %%clicmd:group_label Network Delay Simulator %% ?*/
23 
24 #include <vnet/vnet.h>
25 #include <vnet/plugin/plugin.h>
26 #include <nsim/nsim.h>
27 
28 #include <vlibapi/api.h>
29 #include <vlibmemory/api.h>
30 #include <vpp/app/version.h>
31 
32 /* define message IDs */
33 #include <nsim/nsim.api_enum.h>
34 #include <nsim/nsim.api_types.h>
35 
36 #define REPLY_MSG_ID_BASE nsm->msg_id_base
38 
40 
41 /* Action functions shared between message handlers and debug CLI */
42 
43 int
45  u32 sw_if_index1, int enable_disable)
46 {
49  int rv = 0;
50 
51  if (nsm->is_configured == 0)
52  return VNET_API_ERROR_CANNOT_ENABLE_DISABLE_FEATURE;
53 
54  /* Utterly wrong? */
56  sw_if_index0))
57  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
58 
60  sw_if_index1))
61  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
62 
63  /* Not a physical port? */
64  sw = vnet_get_sw_interface (nsm->vnet_main, sw_if_index0);
66  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
67 
68  sw = vnet_get_sw_interface (nsm->vnet_main, sw_if_index1);
70  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
71 
72  /* Add graph arcs for the input / wheel scraper node */
73  hw = vnet_get_hw_interface (nsm->vnet_main, sw_if_index0);
74  nsm->output_next_index0 =
77 
78  hw = vnet_get_hw_interface (nsm->vnet_main, sw_if_index1);
79  nsm->output_next_index1 =
82 
83  nsm->sw_if_index0 = sw_if_index0;
84  nsm->sw_if_index1 = sw_if_index1;
85 
86  vnet_feature_enable_disable ("device-input", "nsim",
87  sw_if_index0, enable_disable, 0, 0);
88  vnet_feature_enable_disable ("device-input", "nsim",
89  sw_if_index1, enable_disable, 0, 0);
90 
91  return rv;
92 }
93 
94 int
96  int enable_disable)
97 {
100  int rv = 0;
101 
102  if (nsm->is_configured == 0)
103  return VNET_API_ERROR_CANNOT_ENABLE_DISABLE_FEATURE;
104 
105  /* Utterly wrong? */
107  sw_if_index))
108  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
109 
110  /* Not a physical port? */
111  sw = vnet_get_sw_interface (nsm->vnet_main, sw_if_index);
113  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
114 
115  /* Add a graph arc for the input / wheel scraper node */
116  hw = vnet_get_hw_interface (nsm->vnet_main, sw_if_index);
118  ~0);
119  /* Note: use the tx node, this pkt has already visited the output node... */
122  hw->tx_node_index);
123 
124  vnet_feature_enable_disable ("interface-output", "nsim-output-feature",
125  sw_if_index, enable_disable, 0, 0);
126  return rv;
127 }
128 
129 static int
130 nsim_configure (nsim_main_t * nsm, f64 bandwidth, f64 delay, f64 packet_size,
131  f64 drop_fraction)
132 {
133  u64 total_buffer_size_in_bytes, per_worker_buffer_size;
134  u64 wheel_slots_per_worker;
135  int i;
136  int num_workers = vlib_num_workers ();
137  u32 pagesize = getpagesize ();
138  vlib_main_t *vm = nsm->vlib_main;
139 
140  if (bandwidth == 0.0)
141  return VNET_API_ERROR_INVALID_VALUE;
142 
143  if (delay == 0.0)
144  return VNET_API_ERROR_INVALID_VALUE_2;
145 
146  if (packet_size < 64.0 || packet_size > 9000.0)
147  return VNET_API_ERROR_INVALID_VALUE_3;
148 
149  /* Toss the old wheel(s)... */
150  if (nsm->is_configured)
151  {
152  for (i = 0; i < vec_len (nsm->wheel_by_thread); i++)
153  {
154  nsim_wheel_t *wp = nsm->wheel_by_thread[i];
155  munmap (wp, nsm->mmap_size);
156  nsm->wheel_by_thread[i] = 0;
157  }
158  }
159 
160  nsm->delay = delay;
161  nsm->drop_fraction = drop_fraction;
162 
163  /* delay in seconds, bandwidth in bits/sec */
164  total_buffer_size_in_bytes = ((delay * bandwidth) / 8.0) + 0.5;
165 
166  /*
167  * Work out how much buffering each worker needs, assuming decent
168  * RSS behavior.
169  */
170  if (num_workers)
171  per_worker_buffer_size = total_buffer_size_in_bytes / num_workers;
172  else
173  per_worker_buffer_size = total_buffer_size_in_bytes;
174 
175  wheel_slots_per_worker = per_worker_buffer_size / packet_size;
176  wheel_slots_per_worker++;
177 
178  /* Save these for the show command */
179  nsm->bandwidth = bandwidth;
180  nsm->packet_size = packet_size;
181 
182  vec_validate (nsm->wheel_by_thread, num_workers);
183 
184  /* Initialize the output scheduler wheels */
185  i = (!nsm->poll_main_thread && num_workers) ? 1 : 0;
186  for (; i < num_workers + 1; i++)
187  {
188  nsim_wheel_t *wp;
189 
190  nsm->mmap_size = sizeof (nsim_wheel_t)
191  + wheel_slots_per_worker * sizeof (nsim_wheel_entry_t);
192 
193  nsm->mmap_size += pagesize - 1;
194  nsm->mmap_size &= ~(pagesize - 1);
195 
196  wp = clib_mem_vm_alloc (nsm->mmap_size);
197  ASSERT (wp != 0);
198  wp->wheel_size = wheel_slots_per_worker;
199  wp->cursize = 0;
200  wp->head = 0;
201  wp->tail = 0;
202  wp->entries = (void *) (wp + 1);
203  nsm->wheel_by_thread[i] = wp;
204  }
205 
207 
208  /* turn on the ring scrapers */
209  i = (!nsm->poll_main_thread && num_workers) ? 1 : 0;
210  for (; i < num_workers + 1; i++)
211  {
212  vlib_main_t *this_vm = vlib_mains[i];
213 
214  vlib_node_set_state (this_vm, nsim_input_node.index,
215  VLIB_NODE_STATE_POLLING);
216  }
217 
219 
220  nsm->is_configured = 1;
221  return 0;
222 }
223 
224 /*
225  * enable or disable the cross-connect
226  */
227 static clib_error_t *
229  unformat_input_t * input,
230  vlib_cli_command_t * cmd)
231 {
232  nsim_main_t *nsm = &nsim_main;
233  unformat_input_t _line_input, *line_input = &_line_input;
234  u32 sw_if_index0 = ~0;
235  u32 sw_if_index1 = ~0;
236  int enable_disable = 1;
237  u32 tmp;
238  int rv;
239 
240  /* Get a line of input. */
241  if (!unformat_user (input, unformat_line_input, line_input))
242  return 0;
243 
244  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
245  {
246  if (unformat (line_input, "disable"))
247  enable_disable = 0;
248  else if (unformat (line_input, "%U", unformat_vnet_sw_interface,
249  nsm->vnet_main, &tmp))
250  {
251  if (sw_if_index0 == ~0)
252  sw_if_index0 = tmp;
253  else
254  sw_if_index1 = tmp;
255  }
256  else
257  break;
258  }
259 
260  unformat_free (line_input);
261 
262  if (sw_if_index0 == ~0 || sw_if_index1 == ~0)
263  return clib_error_return (0, "Please specify two interfaces...");
264 
265  rv = nsim_cross_connect_enable_disable (nsm, sw_if_index0,
266  sw_if_index1, enable_disable);
267 
268  switch (rv)
269  {
270  case 0:
271  break;
272 
273  case VNET_API_ERROR_CANNOT_ENABLE_DISABLE_FEATURE:
274  return clib_error_return (0, "Not configured, please 'set nsim' first");
275 
276  case VNET_API_ERROR_INVALID_SW_IF_INDEX:
277  return clib_error_return
278  (0, "Invalid interface, only works on physical ports");
279  break;
280 
281  case VNET_API_ERROR_UNIMPLEMENTED:
282  return clib_error_return (0,
283  "Device driver doesn't support redirection");
284  break;
285 
286  default:
287  return clib_error_return (0, "nsim_enable_disable returned %d", rv);
288  }
289  return 0;
290 }
291 
292 static clib_error_t *
294 {
295  nsim_main_t *nsm = &nsim_main;
296 
298  {
299  if (unformat (input, "poll-main-thread"))
300  {
301  nsm->poll_main_thread = 1;
302  }
303  else
304  {
305  return clib_error_return (0, "unknown input '%U'",
306  format_unformat_error, input);
307  }
308  }
309  return 0;
310 }
311 
313 
314 /*?
315  * Enable or disable network simulation cross-connect on two interfaces
316  * The network simulator must have already been configured, see
317  * the "nsim_configure" command.
318  *
319  * Place the interfaces into a bridge group, to ensure that
320  * interfaces are in promiscuous mode.
321  *
322  * @cliexpar
323  * To enable or disable network simulation cross-connect
324  * @clistart
325  * nsim cross-connect enable-disable TenGigabitEthernet2/0/0 TenGigabitEthernet2/0
326  * nsim cross-connect enable-disable TenGigabitEthernet2/0/0 TenGigabitEthernet2/0 disable
327  * @cliend
328  * @cliexcmd{nsim enable-disable <intfc> <intfc> [disable]}
329 ?*/
330 /* *INDENT-OFF* */
331 VLIB_CLI_COMMAND (nsim_enable_disable_command, static) =
332 {
333  .path = "nsim cross-connect enable-disable",
334  .short_help =
335  "nsim cross-connect enable-disable <interface-name-1> "
336  "<interface-name-2> [disable]",
338 };
339 /* *INDENT-ON* */
340 
341 /* API message handler */
344 {
345  vl_api_nsim_cross_connect_enable_disable_reply_t *rmp;
346  nsim_main_t *nsm = &nsim_main;
347  int rv;
348  u32 sw_if_index0, sw_if_index1;
349 
350  sw_if_index0 = clib_net_to_host_u32 (mp->sw_if_index0);
351  sw_if_index1 = clib_net_to_host_u32 (mp->sw_if_index1);
352 
353  if (!vnet_sw_if_index_is_api_valid (sw_if_index0))
354  {
355  rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
356  goto bad_sw_if_index;
357  }
358  if (!vnet_sw_if_index_is_api_valid (sw_if_index1))
359  {
360  rv = VNET_API_ERROR_INVALID_SW_IF_INDEX_2;
361  goto bad_sw_if_index;
362  }
363 
364  rv = nsim_cross_connect_enable_disable (nsm, sw_if_index0, sw_if_index1,
365  (int) (mp->enable_disable));
366 
368  REPLY_MACRO (VL_API_NSIM_CROSS_CONNECT_ENABLE_DISABLE_REPLY);
369 }
370 
371 /* API message handler */
374 {
375  vl_api_nsim_output_feature_enable_disable_reply_t *rmp;
376  nsim_main_t *nsm = &nsim_main;
377  int rv;
379 
380  rv = nsim_output_feature_enable_disable (nsm, ntohl (mp->sw_if_index),
381  (int) (mp->enable_disable));
382 
384  REPLY_MACRO (VL_API_NSIM_OUTPUT_FEATURE_ENABLE_DISABLE_REPLY);
385 }
386 
387 /* API message handler */
388 static void
390 {
391  vl_api_nsim_configure_reply_t *rmp;
392  nsim_main_t *nsm = &nsim_main;
393  f64 delay, bandwidth, packet_size, drop_fraction;
394  u32 packets_per_drop;
395  int rv;
396 
397  delay = ((f64) (ntohl (mp->delay_in_usec))) * 1e-6;
398  bandwidth = (f64) (clib_net_to_host_u64 (mp->bandwidth_in_bits_per_second));
399  packet_size = (f64) (ntohl (mp->average_packet_size));
400 
401  packets_per_drop = ntohl (mp->packets_per_drop);
402  if (packets_per_drop > 0)
403  drop_fraction = 1.0 / (f64) (packets_per_drop);
404  else
405  drop_fraction = 0.0;
406 
407  rv = nsim_configure (nsm, bandwidth, delay, packet_size, drop_fraction);
408 
409  REPLY_MACRO (VL_API_NSIM_CONFIGURE_REPLY);
410 }
411 
412 
413 /*
414  * enable or disable the output_feature
415  */
416 static clib_error_t *
418  unformat_input_t * input,
419  vlib_cli_command_t * cmd)
420 {
421  nsim_main_t *nsm = &nsim_main;
422  unformat_input_t _line_input, *line_input = &_line_input;
423  u32 sw_if_index = ~0;
424  int enable_disable = 1;
425  int rv;
426 
427  /* Get a line of input. */
428  if (!unformat_user (input, unformat_line_input, line_input))
429  return 0;
430 
431  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
432  {
433  if (unformat (line_input, "disable"))
434  enable_disable = 0;
435  else if (unformat (line_input, "%U", unformat_vnet_sw_interface,
436  nsm->vnet_main, &sw_if_index))
437  ;
438  else
439  {
440  clib_error_t *error = clib_error_return (0, "unknown input `%U'",
442  line_input);
443  unformat_free (line_input);
444  return error;
445  }
446  }
447 
448  unformat_free (line_input);
449 
450  if (sw_if_index == ~0)
451  return clib_error_return (0, "Please specify one interface...");
452 
453  rv = nsim_output_feature_enable_disable (nsm, sw_if_index, enable_disable);
454 
455  switch (rv)
456  {
457  case 0:
458  break;
459 
460  case VNET_API_ERROR_CANNOT_ENABLE_DISABLE_FEATURE:
461  return clib_error_return (0, "Not configured, please 'set nsim' first");
462 
463  case VNET_API_ERROR_INVALID_SW_IF_INDEX:
464  return clib_error_return
465  (0, "Invalid interface, only works on physical ports");
466  break;
467 
468  case VNET_API_ERROR_UNIMPLEMENTED:
469  return clib_error_return (0,
470  "Device driver doesn't support redirection");
471  break;
472 
473  default:
474  return clib_error_return
475  (0, "nsim_output_feature_enable_disable returned %d", rv);
476  }
477  return 0;
478 }
479 
480 /*?
481  * Enable or disable network simulation output feature on an interface
482  * The network simulator must have already been configured, see
483  * the "nsim_configure" command.
484  *
485  * @cliexpar
486  * To enable or disable network simulation output feature
487  * @clistart
488  * nsim output-feature enable-disable TenGigabitEthernet2/0/0
489  * nsim output-feature enable-disable TenGigabitEthernet2/0/0 disable
490  * @cliend
491  * @cliexcmd{nsim output-feature enable-disable <intfc> [disable]}
492 ?*/
493 /* *INDENT-OFF* */
494 VLIB_CLI_COMMAND (nsim_output_feature_enable_disable_command, static) =
495 {
496  .path = "nsim output-feature enable-disable",
497  .short_help =
498  "nsim output-feature enable-disable <interface-name> [disable]",
500 };
501 /* *INDENT-ON* */
502 
503 #include <nsim/nsim.api.c>
504 static clib_error_t *
506 {
507  nsim_main_t *nsm = &nsim_main;
508 
509  nsm->vlib_main = vm;
510  nsm->vnet_main = vnet_get_main ();
511 
512  /* Ask for a correctly-sized block of API message decode slots */
514 
515  return 0;
516 }
517 
519 
520 /* *INDENT-OFF* */
521 VNET_FEATURE_INIT (nsim, static) =
522 {
523  .arc_name = "device-input",
524  .node_name = "nsim",
525  .runs_before = VNET_FEATURES ("ethernet-input"),
526 };
527 /* *INDENT-ON */
528 
529 /* *INDENT-OFF* */
530 VNET_FEATURE_INIT (nsim_feature, static) =
531 {
532  .arc_name = "interface-output",
533  .node_name = "nsim-output-feature",
534  .runs_before = VNET_FEATURES ("interface-tx"),
535 };
536 /* *INDENT-ON */
537 
538 /* *INDENT-OFF* */
540 {
541  .version = VPP_BUILD_VER,
542  .description = "Network Delay Simulator",
543 };
544 /* *INDENT-ON* */
545 
546 static uword
547 unformat_delay (unformat_input_t * input, va_list * args)
548 {
549  f64 *result = va_arg (*args, f64 *);
550  f64 tmp;
551 
552  if (unformat (input, "%f us", &tmp))
553  *result = tmp * 1e-6;
554  else if (unformat (input, "%f ms", &tmp))
555  *result = tmp * 1e-3;
556  else if (unformat (input, "%f sec", &tmp))
557  *result = tmp;
558  else
559  return 0;
560 
561  return 1;
562 }
563 
564 static uword
565 unformat_bandwidth (unformat_input_t * input, va_list * args)
566 {
567  f64 *result = va_arg (*args, f64 *);
568  f64 tmp;
569 
570  if (unformat (input, "%f gbit", &tmp))
571  *result = tmp * 1e9;
572  else if (unformat (input, "%f gbyte", &tmp))
573  *result = tmp * 8e9;
574  else
575  return 0;
576  return 1;
577 }
578 
579 static clib_error_t *
581  unformat_input_t * input, vlib_cli_command_t * cmd)
582 {
583  nsim_main_t *nsm = &nsim_main;
584  f64 delay, bandwidth;
585  f64 packet_size = 1500.0;
586  f64 drop_fraction = 0.0;
587  u32 packets_per_drop;
588  u32 num_workers = vlib_num_workers ();
589  int rv;
590 
592  {
593  if (unformat (input, "delay %U", unformat_delay, &delay))
594  ;
595  else if (unformat (input, "bandwidth %U", unformat_bandwidth,
596  &bandwidth))
597  ;
598  else if (unformat (input, "packet-size %f", &packet_size))
599  ;
600  else if (unformat (input, "packets-per-drop %d", &packets_per_drop))
601  {
602  if (packets_per_drop > 0)
603  drop_fraction = 1.0 / ((f64) packets_per_drop);
604  }
605  else if (unformat (input, "drop-fraction %f", &drop_fraction))
606  {
607  if (drop_fraction < 0.0 || drop_fraction > 1.0)
608  return clib_error_return
609  (0, "drop fraction must be between zero and 1");
610  }
611  else if (unformat (input, "poll-main-thread"))
612  nsm->poll_main_thread = 1;
613  else
614  break;
615  }
616 
617  rv = nsim_configure (nsm, bandwidth, delay, packet_size, drop_fraction);
618 
619  switch (rv)
620  {
621  case VNET_API_ERROR_INVALID_VALUE:
622  return clib_error_return (0, "invalid bandwidth %.2f", bandwidth);
623 
624  case VNET_API_ERROR_INVALID_VALUE_2:
625  return clib_error_return (0, "invalid delay %.2f", delay);
626 
627  case VNET_API_ERROR_INVALID_VALUE_3:
628  return clib_error_return (0, "invalid packet size %.2f", packet_size);
629 
630  default:
631  return clib_error_return (0, "error %d", rv);
632 
633  case 0:
634  break;
635  }
636 
637  vlib_cli_output (vm, "Configured link delay %.2f ms, %.2f ms round-trip",
638  nsm->delay * 1e3, 2.0 * nsm->delay * 1e3);
639  if (nsm->drop_fraction > 0.0)
640  vlib_cli_output (vm, "... simulating a network drop fraction of %.5f",
641  nsm->drop_fraction);
642 
643 
644  if (num_workers)
645  vlib_cli_output (vm, "Sim uses %llu bytes per thread, %llu bytes total",
646  nsm->mmap_size, nsm->mmap_size * num_workers);
647  else
648  vlib_cli_output (vm, "Sim uses %llu bytes total", nsm->mmap_size);
649 
650  return 0;
651 }
652 
653 /*?
654  * Configure the network simulation cross-connect
655  * Once the simulator is configured, use the "nsim enable-disable" command
656  * to set up a cross-connect with the supplied delay characteristics.
657  *
658  * The cross connect configuration may be changed without restarting vpp
659  * but it is good practice to shut down the interfaces.
660  *
661  * @cliexpar
662  * To configure the network delay simulator:
663  * @clistart
664  * set nsim delay 10.0 ms bandwidth 5.5 gbit packet-size 128
665  *
666  * @cliend
667  * @cliexcmd{set nsim delay <nn> bandwidth <bb> packet-size <nn>}
668 ?*/
669 /* *INDENT-OFF* */
670 VLIB_CLI_COMMAND (set_nsim_command, static) =
671 {
672  .path = "set nsim",
673  .short_help = "set nsim delay <time> bandwidth <bps> packet-size <nbytes>\n"
674  " [packets-per-drop <nn>][drop-fraction <f64: 0.0 - 1.0>]",
675  .function = set_nsim_command_fn,
676 };
677 /* *INDENT-ON*/
678 
679 
680 static clib_error_t *
682  unformat_input_t * input, vlib_cli_command_t * cmd)
683 {
684  nsim_main_t *nsm = &nsim_main;
685  u32 num_workers = vlib_num_workers ();
686  int verbose = 0;
687 
688  if (nsm->is_configured == 0)
689  return clib_error_return (0, "Network simulator not configured");
690 
691  if (nsm->sw_if_index0 == 0)
692  return clib_error_return (0, "Network simulator not enabled");
693 
694  if (unformat (input, "verbose"))
695  verbose = 1;
696 
697  vlib_cli_output (vm, "Network simulator cross-connects %U and %U",
699  nsm->vnet_main, nsm->sw_if_index0,
701  nsm->vnet_main, nsm->sw_if_index1);
702 
703  vlib_cli_output (vm,
704  "...inserting link delay of %.2f ms, %.2f ms round-trip",
705  nsm->delay * 1e3, 2.0 * nsm->delay * 1e3);
706 
707  if (nsm->drop_fraction > 0.0)
708  vlib_cli_output (vm, "... simulating a network drop fraction of %.5f",
709  nsm->drop_fraction);
710 
711  if (verbose)
712  {
713 
714  vlib_cli_output (vm, " Configured bandwidth: %.2f gbit/sec",
715  nsm->bandwidth / 1e9);
716  vlib_cli_output (vm, " Configured packet size: %f", nsm->packet_size);
717  if (num_workers)
719  (vm, " Sim uses %llu bytes per thread, %llu bytes total",
720  nsm->mmap_size, nsm->mmap_size * num_workers);
721  else
722  vlib_cli_output (vm, " Sim uses %llu bytes total", nsm->mmap_size);
723  }
724 
725  return 0;
726 }
727 
728 /*?
729  * Display state info for the network delay simulator.
730  *
731  * @cliexpar
732  * To display the state of the network simulator
733  * @clistart
734  * show nsim verbose
735  * Network simulator cross-connects TenGigabitEthernet2/0/0 and TenGigabitEthernet2/0/1
736  * ...inserting link delay of 10.00 ms, 20.00 ms round-trip
737  * Configured bandwidth: 10.10 gbit/sec
738  * Configured packet size: 128
739  * Sim uses 157814784 bytes total
740  * @cliend
741  * @cliexcmd{show nsim}
742 ?*/
743 
744 /* *INDENT-OFF* */
745 VLIB_CLI_COMMAND (show_nsim_command, static) =
746 {
747  .path = "show nsim",
748  .short_help = "Display network delay simulator configuration",
749  .function = show_nsim_command_fn,
750 };
751 /* *INDENT-ON* */
752 
753 /*
754  * fd.io coding-style-patch-verification: ON
755  *
756  * Local Variables:
757  * eval: (c-set-style "gnu")
758  * End:
759  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:440
u32 * output_next_index_by_sw_if_index
Definition: nsim.h:58
f64 packet_size
Definition: nsim.h:69
static clib_error_t * nsim_init(vlib_main_t *vm)
Definition: nsim.c:505
vl_api_interface_index_t sw_if_index1
Definition: nsim.api:29
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
vnet_interface_main_t interface_main
Definition: vnet.h:56
u16 msg_id_base
Definition: nsim.h:51
unsigned long u64
Definition: types.h:89
Definition: nsim.h:28
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
int i
enable / disable the network delay simulation cross-connect
Definition: nsim.api:16
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:989
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
unformat_function_t unformat_vnet_sw_interface
configure the network delay simulation cross-connect
Definition: nsim.api:62
int nsim_cross_connect_enable_disable(nsim_main_t *nsm, u32 sw_if_index0, u32 sw_if_index1, int enable_disable)
Definition: nsim.c:44
u32 output_next_index0
Definition: nsim.h:55
vlib_main_t ** vlib_mains
Definition: buffer.c:332
format_function_t format_vnet_sw_if_index_name
static uword vlib_node_add_next(vlib_main_t *vm, uword node, uword next_node)
Definition: node_funcs.h:1092
double f64
Definition: types.h:142
#define vlib_worker_thread_barrier_sync(X)
Definition: threads.h:204
u32 cursize
Definition: nsim.h:41
enable / disable the network delay simulation output feature
Definition: nsim.api:39
vl_api_interface_index_t sw_if_index
Definition: gre.api:59
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:173
vnet_main_t * vnet_main
Definition: nsim.h:80
int is_configured
Definition: nsim.h:76
static void vl_api_nsim_output_feature_enable_disable_t_handler(vl_api_nsim_output_feature_enable_disable_t *mp)
Definition: nsim.c:373
#define clib_error_return(e, args...)
Definition: error.h:99
static uword unformat_delay(unformat_input_t *input, va_list *args)
Definition: nsim.c:547
unsigned int u32
Definition: types.h:88
unformat_function_t unformat_line_input
Definition: format.h:283
u64 mmap_size
Definition: nsim.h:73
struct _unformat_input_t unformat_input_t
VLIB_PLUGIN_REGISTER()
#define VLIB_CONFIG_FUNCTION(x, n,...)
Definition: init.h:182
#define REPLY_MACRO(t)
u32 tail
Definition: nsim.h:43
static void vl_api_nsim_cross_connect_enable_disable_t_handler(vl_api_nsim_cross_connect_enable_disable_t *mp)
Definition: nsim.c:343
static int nsim_configure(nsim_main_t *nsm, f64 bandwidth, f64 delay, f64 packet_size, f64 drop_fraction)
Definition: nsim.c:130
vlib_main_t * vm
Definition: in2out_ed.c:1810
VNET_FEATURE_INIT(nsim, static)
u32 sw_if_index1
Definition: nsim.h:54
#define BAD_SW_IF_INDEX_LABEL
static uword vnet_sw_if_index_is_api_valid(u32 sw_if_index)
static void vl_api_nsim_configure_t_handler(vl_api_nsim_configure_t *mp)
Definition: nsim.c:389
#define UNFORMAT_END_OF_INPUT
Definition: format.h:145
static clib_error_t * nsim_output_feature_enable_disable_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: nsim.c:417
static clib_error_t * nsim_config(vlib_main_t *vm, unformat_input_t *input)
Definition: nsim.c:293
vlib_node_registration_t nsim_input_node
(constructor) VLIB_REGISTER_NODE (nsim_input_node)
Definition: nsim_input.c:168
nsim_wheel_entry_t * entries
Definition: nsim.h:44
#define pool_is_free_index(P, I)
Use free bitmap to query whether given index is free.
Definition: pool.h:284
u32 head
Definition: nsim.h:42
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:152
vlib_main_t * vlib_main
Definition: nsim.h:79
static clib_error_t * nsim_cross_connect_enable_disable_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: nsim.c:228
#define ASSERT(truth)
int nsim_output_feature_enable_disable(nsim_main_t *nsm, u32 sw_if_index, int enable_disable)
Definition: nsim.c:95
u64 bandwidth_in_bits_per_second
Definition: nsim.api:73
nsim_wheel_t ** wheel_by_thread
Definition: nsim.h:64
u32 poll_main_thread
Definition: nsim.h:71
vl_api_interface_index_t sw_if_index
Definition: nsim.api:51
static void vlib_node_set_state(vlib_main_t *vm, u32 node_index, vlib_node_state_t new_state)
Set node dispatch state.
Definition: node_funcs.h:148
#define VNET_FEATURES(...)
Definition: feature.h:442
vl_api_interface_index_t sw_if_index0
Definition: nsim.api:28
u32 sw_if_index0
Definition: nsim.h:54
f64 bandwidth
Definition: nsim.h:68
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
u64 uword
Definition: types.h:112
static void unformat_free(unformat_input_t *i)
Definition: format.h:163
vnet_sw_interface_t * sw_interfaces
Definition: interface.h:854
static uword unformat_bandwidth(unformat_input_t *input, va_list *args)
Definition: nsim.c:565
f64 delay
Definition: nsim.h:67
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
void vlib_worker_thread_barrier_release(vlib_main_t *vm)
Definition: threads.c:1496
vnet_sw_interface_type_t type
Definition: interface.h:718
static u32 vlib_num_workers()
Definition: threads.h:372
static void setup_message_id_table(snat_main_t *sm, api_main_t *am)
Definition: nat_api.c:3410
static clib_error_t * show_nsim_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: nsim.c:681
f64 drop_fraction
Definition: nsim.h:70
#define vec_validate_init_empty(V, I, INIT)
Make sure vector is long enough for given index and initialize empty space (no header, unspecified alignment)
Definition: vec.h:487
static void * clib_mem_vm_alloc(uword size)
Definition: mem.h:332
u32 wheel_size
Definition: nsim.h:40
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:689
u32 output_next_index1
Definition: nsim.h:55
nsim_main_t nsim_main
Definition: nsim.c:39
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
int vnet_feature_enable_disable(const char *arc_name, const char *node_name, u32 sw_if_index, int enable_disable, void *feature_config, u32 n_feature_config_bytes)
Definition: feature.c:304
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:171
#define VALIDATE_SW_IF_INDEX(mp)
static clib_error_t * set_nsim_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: nsim.c:580