FD.io VPP  v19.01.1-17-ge106252
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_msg_enum.h>
34 
35 /* define message structures */
36 #define vl_typedefs
37 #include <nsim/nsim_all_api_h.h>
38 #undef vl_typedefs
39 
40 /* define generated endian-swappers */
41 #define vl_endianfun
42 #include <nsim/nsim_all_api_h.h>
43 #undef vl_endianfun
44 
45 /* instantiate all the print functions we know about */
46 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
47 #define vl_printfun
48 #include <nsim/nsim_all_api_h.h>
49 #undef vl_printfun
50 
51 /* Get the API version number */
52 #define vl_api_version(n,v) static u32 api_version=(v);
53 #include <nsim/nsim_all_api_h.h>
54 #undef vl_api_version
55 
56 #define REPLY_MSG_ID_BASE nsm->msg_id_base
58 
60 
61 /* List of message types that this plugin understands */
62 
63 #define foreach_nsim_plugin_api_msg \
64 _(NSIM_ENABLE_DISABLE, nsim_enable_disable) \
65 _(NSIM_CONFIGURE, nsim_configure)
66 
67 /* Action function shared between message handler and debug CLI */
68 
69 int
70 nsim_enable_disable (nsim_main_t * nsm, u32 sw_if_index0,
71  u32 sw_if_index1, int enable_disable)
72 {
75  int rv = 0;
76 
77  if (nsm->is_configured == 0)
78  return VNET_API_ERROR_CANNOT_ENABLE_DISABLE_FEATURE;
79 
80  /* Utterly wrong? */
82  sw_if_index0))
83  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
84 
86  sw_if_index1))
87  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
88 
89  /* Not a physical port? */
90  sw = vnet_get_sw_interface (nsm->vnet_main, sw_if_index0);
92  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
93 
94  sw = vnet_get_sw_interface (nsm->vnet_main, sw_if_index1);
96  return VNET_API_ERROR_INVALID_SW_IF_INDEX;
97 
98  /* Add graph arcs for the input / wheel scraper node */
99  hw = vnet_get_hw_interface (nsm->vnet_main, sw_if_index0);
100  nsm->output_next_index0 =
103 
104  hw = vnet_get_hw_interface (nsm->vnet_main, sw_if_index1);
105  nsm->output_next_index1 =
108 
109  nsm->sw_if_index0 = sw_if_index0;
110  nsm->sw_if_index1 = sw_if_index1;
111 
112  vnet_feature_enable_disable ("device-input", "nsim",
113  sw_if_index0, enable_disable, 0, 0);
114  vnet_feature_enable_disable ("device-input", "nsim",
115  sw_if_index1, enable_disable, 0, 0);
116 
117  return rv;
118 }
119 
120 static int
121 nsim_configure (nsim_main_t * nsm, f64 bandwidth, f64 delay, f64 packet_size,
122  f64 drop_fraction)
123 {
124  u64 total_buffer_size_in_bytes, per_worker_buffer_size;
125  u64 wheel_slots_per_worker;
126  int i;
127  int num_workers = vlib_num_workers ();
128  u32 pagesize = getpagesize ();
129  vlib_main_t *vm = nsm->vlib_main;
130 
131  if (bandwidth == 0.0)
132  return VNET_API_ERROR_INVALID_VALUE;
133 
134  if (delay == 0.0)
135  return VNET_API_ERROR_INVALID_VALUE_2;
136 
137  if (packet_size < 64.0 || packet_size > (f64) WHEEL_ENTRY_DATA_SIZE)
138  return VNET_API_ERROR_INVALID_VALUE_3;
139 
140  /* Toss the old wheel(s)... */
141  if (nsm->is_configured)
142  {
143  for (i = 0; i < vec_len (nsm->wheel_by_thread); i++)
144  {
145  nsim_wheel_t *wp = nsm->wheel_by_thread[i];
146  munmap (wp, nsm->mmap_size);
147  nsm->wheel_by_thread[i] = 0;
148  }
149  }
150 
151  nsm->delay = delay;
152  nsm->drop_fraction = drop_fraction;
153 
154  /* delay in seconds, bandwidth in bits/sec */
155  total_buffer_size_in_bytes = (u32) ((delay * bandwidth) / 8.0) + 0.5;
156 
157  /*
158  * Work out how much buffering each worker needs, assuming decent
159  * RSS behavior.
160  */
161  if (num_workers)
162  per_worker_buffer_size = total_buffer_size_in_bytes / num_workers;
163  else
164  per_worker_buffer_size = total_buffer_size_in_bytes;
165 
166  wheel_slots_per_worker = per_worker_buffer_size / packet_size;
167  wheel_slots_per_worker++;
168 
169  /* Save these for the show command */
170  nsm->bandwidth = bandwidth;
171  nsm->packet_size = packet_size;
172 
173  vec_validate (nsm->wheel_by_thread, num_workers);
174  vec_validate (nsm->buffer_indices_by_thread, num_workers);
175 
176  /* Initialize the output scheduler wheels */
177  for (i = num_workers ? 1 : 0; i < num_workers + 1; i++)
178  {
179  nsim_wheel_t *wp;
180 
181  nsm->mmap_size = sizeof (nsim_wheel_t)
182  + wheel_slots_per_worker * sizeof (nsim_wheel_entry_t);
183 
184  nsm->mmap_size += pagesize - 1;
185  nsm->mmap_size &= ~(pagesize - 1);
186 
187  wp = clib_mem_vm_alloc (nsm->mmap_size);
188  ASSERT (wp != 0);
189  wp->wheel_size = wheel_slots_per_worker;
190  wp->cursize = 0;
191  wp->head = 0;
192  wp->tail = 0;
193  wp->entries = (void *) (wp + 1);
194  nsm->wheel_by_thread[i] = wp;
196  _vec_len (nsm->buffer_indices_by_thread[i]) = 0;
197  }
198 
200 
201  /* turn on the ring scrapers */
202  for (i = num_workers ? 1 : 0; i < num_workers + 1; i++)
203  {
204  vlib_main_t *this_vm = vlib_mains[i];
205 
206  vlib_node_set_state (this_vm, nsim_input_node.index,
207  VLIB_NODE_STATE_POLLING);
208  }
209 
211 
212  nsm->is_configured = 1;
213  return 0;
214 }
215 
216 /*
217  * enable or disable the cross-connect
218  */
219 static clib_error_t *
221  unformat_input_t * input,
222  vlib_cli_command_t * cmd)
223 {
224  nsim_main_t *nsm = &nsim_main;
225  u32 sw_if_index0 = ~0;
226  u32 sw_if_index1 = ~0;
227  int enable_disable = 1;
228  u32 tmp;
229  int rv;
230 
232  {
233  if (unformat (input, "disable"))
234  enable_disable = 0;
235  else if (unformat (input, "%U", unformat_vnet_sw_interface,
236  nsm->vnet_main, &tmp))
237  {
238  if (sw_if_index0 == ~0)
239  sw_if_index0 = tmp;
240  else
241  sw_if_index1 = tmp;
242  }
243  else
244  break;
245  }
246 
247  if (sw_if_index0 == ~0 || sw_if_index1 == ~0)
248  return clib_error_return (0, "Please specify two interfaces...");
249 
250  rv = nsim_enable_disable (nsm, sw_if_index0, sw_if_index1, enable_disable);
251 
252  switch (rv)
253  {
254  case 0:
255  break;
256 
257  case VNET_API_ERROR_CANNOT_ENABLE_DISABLE_FEATURE:
258  return clib_error_return (0, "Not configured, please 'set nsim' first");
259 
260  case VNET_API_ERROR_INVALID_SW_IF_INDEX:
261  return clib_error_return
262  (0, "Invalid interface, only works on physical ports");
263  break;
264 
265  case VNET_API_ERROR_UNIMPLEMENTED:
266  return clib_error_return (0,
267  "Device driver doesn't support redirection");
268  break;
269 
270  default:
271  return clib_error_return (0, "nsim_enable_disable returned %d", rv);
272  }
273  return 0;
274 }
275 
276 /*?
277  * Enable or disable network simulation cross-connect on two interfaces
278  * The network simulator must have already been configured, see
279  * the "nsim_configure" command.
280  *
281  * Place the interfaces into a bridge group, to ensure that
282  * interfaces are in promiscuous mode.
283  *
284  * @cliexpar
285  * To enable or disable network simulation cross-connect
286  * @clistart
287  * nsim enable-disable TenGigabitEthernet2/0/0 TenGigabitEthernet2/0
288  * nsim enable-disable TenGigabitEthernet2/0/0 TenGigabitEthernet2/0 disable
289  * @cliend
290  * @cliexcmd{nsim enable-disable <intfc> <intfc> [disable]}
291 ?*/
292 /* *INDENT-OFF* */
293 VLIB_CLI_COMMAND (nsim_enable_disable_command, static) =
294 {
295  .path = "nsim enable-disable",
296  .short_help =
297  "nsim enable-disable <interface-name-1> <interface-name-2> [disable]",
298  .function = nsim_enable_disable_command_fn,
299 };
300 /* *INDENT-ON* */
301 
302 /* API message handler */
305 {
306  vl_api_nsim_enable_disable_reply_t *rmp;
307  nsim_main_t *nsm = &nsim_main;
308  int rv;
309 
310  rv = nsim_enable_disable (nsm, ntohl (mp->sw_if_index0),
311  ntohl (mp->sw_if_index1),
312  (int) (mp->enable_disable));
313 
314  REPLY_MACRO (VL_API_NSIM_ENABLE_DISABLE_REPLY);
315 }
316 
317 /* API message handler */
318 static void
320 {
321  vl_api_nsim_configure_reply_t *rmp;
322  nsim_main_t *nsm = &nsim_main;
323  f64 delay, bandwidth, packet_size, drop_fraction;
324  u32 packets_per_drop;
325  int rv;
326 
327  delay = ((f64) (ntohl (mp->delay_in_usec))) * 1e-6;
328  bandwidth = (f64) (clib_net_to_host_u64 (mp->bandwidth_in_bits_per_second));
329  packet_size = (f64) (ntohl (mp->average_packet_size));
330 
331  packets_per_drop = ntohl (mp->packets_per_drop);
332  if (packets_per_drop > 0)
333  drop_fraction = 1.0 / (f64) (packets_per_drop);
334  else
335  drop_fraction = 0.0;
336 
337  rv = nsim_configure (nsm, bandwidth, delay, packet_size, drop_fraction);
338 
339  REPLY_MACRO (VL_API_NSIM_CONFIGURE_REPLY);
340 }
341 
342 
343 /* Set up the API message handling tables */
344 static clib_error_t *
346 {
347  nsim_main_t *nsm = &nsim_main;
348 #define _(N,n) \
349  vl_msg_api_set_handlers((VL_API_##N + nsm->msg_id_base), \
350  #n, \
351  vl_api_##n##_t_handler, \
352  vl_noop_handler, \
353  vl_api_##n##_t_endian, \
354  vl_api_##n##_t_print, \
355  sizeof(vl_api_##n##_t), 1);
357 #undef _
358 
359  return 0;
360 }
361 
362 #define vl_msg_name_crc_list
363 #include <nsim/nsim_all_api_h.h>
364 #undef vl_msg_name_crc_list
365 
366 static void
368 {
369 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + nsm->msg_id_base);
370  foreach_vl_msg_name_crc_nsim;
371 #undef _
372 }
373 
374 static clib_error_t *
376 {
377  nsim_main_t *nsm = &nsim_main;
378  clib_error_t *error = 0;
379  u8 *name;
380 
381  nsm->vlib_main = vm;
382  nsm->vnet_main = vnet_get_main ();
383 
384  name = format (0, "nsim_%08x%c", api_version, 0);
385 
386  /* Ask for a correctly-sized block of API message decode slots */
388  ((char *) name, VL_MSG_FIRST_AVAILABLE);
389 
390  error = nsim_plugin_api_hookup (vm);
391 
392  /* Add our API messages to the global name_crc hash table */
394 
395  vec_free (name);
396 
397  return error;
398 }
399 
401 
402 /* *INDENT-OFF* */
403 VNET_FEATURE_INIT (nsim, static) =
404 {
405  .arc_name = "device-input",
406  .node_name = "nsim",
407  .runs_before = VNET_FEATURES ("ethernet-input"),
408 };
409 /* *INDENT-ON */
410 
411 /* *INDENT-OFF* */
413 {
414  .version = VPP_BUILD_VER,
415  .description = "network delay simulator plugin",
416 };
417 /* *INDENT-ON* */
418 
419 static uword
420 unformat_delay (unformat_input_t * input, va_list * args)
421 {
422  f64 *result = va_arg (*args, f64 *);
423  f64 tmp;
424 
425  if (unformat (input, "%f us", &tmp))
426  *result = tmp * 1e-6;
427  else if (unformat (input, "%f ms", &tmp))
428  *result = tmp * 1e-3;
429  else if (unformat (input, "%f sec", &tmp))
430  *result = tmp;
431  else
432  return 0;
433 
434  return 1;
435 }
436 
437 static uword
438 unformat_bandwidth (unformat_input_t * input, va_list * args)
439 {
440  f64 *result = va_arg (*args, f64 *);
441  f64 tmp;
442 
443  if (unformat (input, "%f gbit", &tmp))
444  *result = tmp * 1e9;
445  else if (unformat (input, "%f gbyte", &tmp))
446  *result = tmp * 8e9;
447  else
448  return 0;
449  return 1;
450 }
451 
452 static clib_error_t *
454  unformat_input_t * input, vlib_cli_command_t * cmd)
455 {
456  nsim_main_t *nsm = &nsim_main;
457  f64 delay, bandwidth;
458  f64 packet_size = 1500.0;
459  f64 drop_fraction = 0.0;
460  u32 packets_per_drop;
461  u32 num_workers = vlib_num_workers ();
462  int rv;
463 
465  {
466  if (unformat (input, "delay %U", unformat_delay, &delay))
467  ;
468  else if (unformat (input, "bandwidth %U", unformat_bandwidth,
469  &bandwidth))
470  ;
471  else if (unformat (input, "packet-size %f", &packet_size))
472  ;
473  else if (unformat (input, "packets-per-drop %d", &packets_per_drop))
474  {
475  if (packets_per_drop > 0)
476  drop_fraction = 1.0 / ((f64) packets_per_drop);
477  }
478  else if (unformat (input, "drop-fraction %f", &drop_fraction))
479  {
480  if (drop_fraction < 0.0 || drop_fraction > 1.0)
481  return clib_error_return
482  (0, "drop fraction must be between zero and 1");
483  }
484  else
485  break;
486  }
487 
488  rv = nsim_configure (nsm, bandwidth, delay, packet_size, drop_fraction);
489 
490  switch (rv)
491  {
492  case VNET_API_ERROR_INVALID_VALUE:
493  return clib_error_return (0, "invalid bandwidth %.2f", bandwidth);
494 
495  case VNET_API_ERROR_INVALID_VALUE_2:
496  return clib_error_return (0, "invalid delay %.2f", delay);
497 
498  case VNET_API_ERROR_INVALID_VALUE_3:
499  return clib_error_return (0, "invalid packet size %.2f", packet_size);
500 
501  default:
502  return clib_error_return (0, "error %d", rv);
503 
504  case 0:
505  break;
506  }
507 
508  vlib_cli_output (vm, "Configured link delay %.2f ms, %.2f ms round-trip",
509  nsm->delay * 1e3, 2.0 * nsm->delay * 1e3);
510  if (nsm->drop_fraction > 0.0)
511  vlib_cli_output (vm, "... simulating a network drop fraction of %.5f",
512  nsm->drop_fraction);
513 
514 
515  if (num_workers)
516  vlib_cli_output (vm, "Sim uses %llu bytes per thread, %llu bytes total",
517  nsm->mmap_size, nsm->mmap_size * num_workers);
518  else
519  vlib_cli_output (vm, "Sim uses %llu bytes total", nsm->mmap_size);
520 
521  return 0;
522 }
523 
524 /*?
525  * Configure the network simulation cross-connect
526  * Once the simulator is configured, use the "nsim enable-disable" command
527  * to set up a cross-connect with the supplied delay characteristics.
528  *
529  * The cross connect configuration may be changed without restarting vpp
530  * but it is good practice to shut down the interfaces.
531  *
532  * @cliexpar
533  * To configure the network delay simulator:
534  * @clistart
535  * set nsim delay 10.0 ms bandwidth 5.5 gbit packet-size 128
536  *
537  * @cliend
538  * @cliexcmd{set nsim delay <nn> bandwidth <bb> packet-size <nn>}
539 ?*/
540 /* *INDENT-OFF* */
541 VLIB_CLI_COMMAND (set_nsim_command, static) =
542 {
543  .path = "set nsim",
544  .short_help = "set nsim delay <time> bandwidth <bps> packet-size <nbytes>",
545  .function = set_nsim_command_fn,
546 };
547 /* *INDENT-ON*/
548 
549 
550 static clib_error_t *
552  unformat_input_t * input, vlib_cli_command_t * cmd)
553 {
554  nsim_main_t *nsm = &nsim_main;
555  u32 num_workers = vlib_num_workers ();
556  int verbose = 0;
557 
558  if (nsm->is_configured == 0)
559  return clib_error_return (0, "Network simulator not configured");
560 
561  if (nsm->sw_if_index0 == 0)
562  return clib_error_return (0, "Network simulator not enabled");
563 
564  if (unformat (input, "verbose"))
565  verbose = 1;
566 
567  vlib_cli_output (vm, "Network simulator cross-connects %U and %U",
569  nsm->vnet_main, nsm->sw_if_index0,
571  nsm->vnet_main, nsm->sw_if_index1);
572 
573  vlib_cli_output (vm,
574  "...inserting link delay of %.2f ms, %.2f ms round-trip",
575  nsm->delay * 1e3, 2.0 * nsm->delay * 1e3);
576 
577  if (nsm->drop_fraction > 0.0)
578  vlib_cli_output (vm, "... simulating a network drop fraction of %.5f",
579  nsm->drop_fraction);
580 
581  if (verbose)
582  {
583 
584  vlib_cli_output (vm, " Configured bandwidth: %.2f gbit/sec",
585  nsm->bandwidth / 1e9);
586  vlib_cli_output (vm, " Configured packet size: %f", nsm->packet_size);
587  if (num_workers)
589  (vm, " Sim uses %llu bytes per thread, %llu bytes total",
590  nsm->mmap_size, nsm->mmap_size * num_workers);
591  else
592  vlib_cli_output (vm, " Sim uses %llu bytes total", nsm->mmap_size);
593  }
594 
595  return 0;
596 }
597 
598 /*?
599  * Display state info for the network delay simulator.
600  *
601  * @cliexpar
602  * To display the state of the network simulator
603  * @clistart
604  * show nsim verbose
605  * Network simulator cross-connects TenGigabitEthernet2/0/0 and TenGigabitEthernet2/0/1
606  * ...inserting link delay of 10.00 ms, 20.00 ms round-trip
607  * Configured bandwidth: 10.10 gbit/sec
608  * Configured packet size: 128
609  * Sim uses 157814784 bytes total
610  * @cliend
611  * @cliexcmd{show nsim}
612 ?*/
613 
614 /* *INDENT-OFF* */
615 VLIB_CLI_COMMAND (show_nsim_command, static) =
616 {
617  .path = "show nsim",
618  .short_help = "Display network delay simulator configuration",
619  .function = show_nsim_command_fn,
620 };
621 /* *INDENT-ON* */
622 
623 /*
624  * fd.io coding-style-patch-verification: ON
625  *
626  * Local Variables:
627  * eval: (c-set-style "gnu")
628  * End:
629  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:439
f64 packet_size
Definition: nsim.h:67
static clib_error_t * nsim_init(vlib_main_t *vm)
Definition: nsim.c:375
#define WHEEL_ENTRY_DATA_SIZE
Definition: nsim.h:28
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
vnet_interface_main_t interface_main
Definition: vnet.h:56
u16 msg_id_base
Definition: nsim.h:52
unsigned long u64
Definition: types.h:89
Definition: nsim.h:30
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
int i
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
unformat_function_t unformat_vnet_sw_interface
configure the network delay simulation cross-connect
Definition: nsim.api:38
u32 output_next_index0
Definition: nsim.h:56
vlib_main_t ** vlib_mains
Definition: buffer.c:310
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:1122
unsigned char u8
Definition: types.h:56
double f64
Definition: types.h:142
#define vlib_worker_thread_barrier_sync(X)
Definition: threads.h:204
u32 cursize
Definition: nsim.h:42
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
vnet_main_t * vnet_main
Definition: nsim.h:77
int is_configured
Definition: nsim.h:73
#define clib_error_return(e, args...)
Definition: error.h:99
static uword unformat_delay(unformat_input_t *input, va_list *args)
Definition: nsim.c:420
unsigned int u32
Definition: types.h:88
#define VLIB_FRAME_SIZE
Definition: node.h:401
u64 mmap_size
Definition: nsim.h:70
struct _unformat_input_t unformat_input_t
VLIB_PLUGIN_REGISTER()
#define REPLY_MACRO(t)
u32 tail
Definition: nsim.h:44
u8 name[64]
Definition: memclnt.api:152
static int nsim_configure(nsim_main_t *nsm, f64 bandwidth, f64 delay, f64 packet_size, f64 drop_fraction)
Definition: nsim.c:121
VNET_FEATURE_INIT(nsim, static)
API main structure, used by both vpp and binary API clients.
Definition: api_common.h:202
u32 sw_if_index1
Definition: nsim.h:55
int nsim_enable_disable(nsim_main_t *nsm, u32 sw_if_index0, u32 sw_if_index1, int enable_disable)
Definition: nsim.c:70
static void vl_api_nsim_configure_t_handler(vl_api_nsim_configure_t *mp)
Definition: nsim.c:319
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
vlib_main_t * vm
Definition: buffer.c:301
vlib_node_registration_t nsim_input_node
(constructor) VLIB_REGISTER_NODE (nsim_input_node)
Definition: nsim_input.c:217
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:341
nsim_wheel_entry_t * entries
Definition: nsim.h:45
#define pool_is_free_index(P, I)
Use free bitmap to query whether given index is free.
Definition: pool.h:283
#define foreach_nsim_plugin_api_msg
Definition: nsim.c:63
u32 head
Definition: nsim.h:43
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:155
vlib_main_t * vlib_main
Definition: nsim.h:76
#define ASSERT(truth)
u64 bandwidth_in_bits_per_second
Definition: nsim.api:49
nsim_wheel_t ** wheel_by_thread
Definition: nsim.h:61
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
enable / disable the network delay simulation cross-connect
Definition: nsim.api:15
#define VNET_FEATURES(...)
Definition: feature.h:435
static void vl_api_nsim_enable_disable_t_handler(vl_api_nsim_enable_disable_t *mp)
Definition: nsim.c:304
u32 sw_if_index0
Definition: nsim.h:55
f64 bandwidth
Definition: nsim.h:66
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
u64 uword
Definition: types.h:112
vnet_sw_interface_t * sw_interfaces
Definition: interface.h:830
u32 ** buffer_indices_by_thread
Definition: nsim.h:62
static uword unformat_bandwidth(unformat_input_t *input, va_list *args)
Definition: nsim.c:438
f64 delay
Definition: nsim.h:65
static clib_error_t * nsim_enable_disable_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: nsim.c:220
void vlib_worker_thread_barrier_release(vlib_main_t *vm)
Definition: threads.c:1468
vnet_sw_interface_type_t type
Definition: interface.h:704
static u32 vlib_num_workers()
Definition: threads.h:366
static clib_error_t * show_nsim_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: nsim.c:551
f64 drop_fraction
Definition: nsim.h:68
static void * clib_mem_vm_alloc(uword size)
Definition: mem.h:308
u32 wheel_size
Definition: nsim.h:41
api_main_t api_main
Definition: api_shared.c:35
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:725
u32 output_next_index1
Definition: nsim.h:56
nsim_main_t nsim_main
Definition: nsim.c:59
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
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:274
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:170
static clib_error_t * set_nsim_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: nsim.c:453
u16 vl_msg_api_get_msg_ids(const char *name, int n)
Definition: api_shared.c:865
static void setup_message_id_table(nsim_main_t *nsm, api_main_t *am)
Definition: nsim.c:367
static clib_error_t * nsim_plugin_api_hookup(vlib_main_t *vm)
Definition: nsim.c:345