FD.io VPP  v19.08-27-gf4dcae4
Vector Packet Processing
ping.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2016 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 
16 #include <stddef.h>
17 #include <vnet/ip/ping.h>
18 #include <vnet/fib/ip6_fib.h>
19 #include <vnet/fib/ip4_fib.h>
20 #include <vnet/fib/fib_entry.h>
21 #include <vlib/vlib.h>
22 
24 
25 /**
26  * @file
27  * @brief IPv4 and IPv6 ICMP Ping.
28  *
29  * This file contains code to support IPv4 or IPv6 ICMP ECHO_REQUEST to
30  * network hosts.
31  *
32  */
33 
34 typedef struct
35 {
41 
42 
43 u8 *
44 format_icmp_echo_trace (u8 * s, va_list * va)
45 {
46  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
47  CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
48  icmp_echo_trace_t *t = va_arg (*va, icmp_echo_trace_t *);
49 
50  s =
51  format (s, "ICMP%s echo id %d seq %d", t->is_ip6 ? "6" : "4", t->id,
52  t->seq);
54  {
55  s = format (s, " (unknown)");
56  }
57  else
58  {
59  s = format (s, " send to cli node %d", t->cli_process_node);
60  }
61 
62  return s;
63 }
64 
65 
66 static u8 *
67 format_ip46_ping_result (u8 * s, va_list * args)
68 {
70 
71  switch (res)
72  {
73 #define _(v, n) case SEND_PING_##v: s = format(s, "%s", n);break;
75 #undef _
76  }
77 
78  return (s);
79 }
80 
81 
82 /*
83  * Poor man's get-set-clear functions
84  * for manipulation of icmp_id -> cli_process_id
85  * mappings.
86  *
87  * There should normally be very few (0..1..2) of these
88  * mappings, so the linear search is a good strategy.
89  *
90  * Make them thread-safe via a simple spinlock.
91  *
92  */
93 
94 
97 {
98  ping_main_t *pm = &ping_main;
99  uword cli_process_id = PING_CLI_UNKNOWN_NODE;
100  ping_run_t *pr;
101 
103  vec_foreach (pr, pm->active_ping_runs)
104  {
105  if (pr->icmp_id == icmp_id)
106  {
107  cli_process_id = pr->cli_process_id;
108  break;
109  }
110  }
112  return cli_process_id;
113 }
114 
115 
118  uword cli_process_id)
119 {
120  ping_main_t *pm = &ping_main;
121  ping_run_t *pr;
122 
124  vec_foreach (pr, pm->active_ping_runs)
125  {
126  if (pr->icmp_id == icmp_id)
127  {
128  pr->cli_process_id = cli_process_id;
129  goto have_found_and_set;
130  }
131  }
132  /* no such key yet - add a new one */
133  ping_run_t new_pr = {.icmp_id = icmp_id,.cli_process_id = cli_process_id };
134  vec_add1 (pm->active_ping_runs, new_pr);
135 have_found_and_set:
137 }
138 
139 
142 {
143  ping_main_t *pm = &ping_main;
144  ping_run_t *pr;
145 
147  vec_foreach (pr, pm->active_ping_runs)
148  {
149  if (pr->icmp_id == icmp_id)
150  {
152  break;
153  }
154  }
156 }
157 
160  u16 * out_icmp_id, u16 * out_icmp_seq, int is_ip6)
161 {
162  int l4_offset;
163  if (is_ip6)
164  {
166  if (ip6->protocol != IP_PROTOCOL_ICMP6)
167  {
168  return 0;
169  }
170  l4_offset = sizeof (*ip6); // IPv6 EH
171  }
172  else
173  {
175  l4_offset = ip4_header_bytes (ip4);
176 
177  }
178  icmp46_header_t *icmp46 = vlib_buffer_get_current (b0) + l4_offset;
179  icmp46_echo_request_t *icmp46_echo = (icmp46_echo_request_t *) (icmp46 + 1);
180 
181  *out_icmp_id = clib_net_to_host_u16 (icmp46_echo->id);
182  *out_icmp_seq = clib_net_to_host_u16 (icmp46_echo->seq);
183  return 1;
184 }
185 
186 /*
187  * post the buffer to a given cli process node - the caller should forget bi0 after return.
188  */
189 
192  int is_ip6)
193 {
194  vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
195  u64 nowts = clib_cpu_time_now ();
196 
197  /* Pass the timestamp to the cli_process thanks to the vnet_buffer unused metadata field */
198 
199  /* Camping on unused data... just ensure statically that there is enough space */
200  STATIC_ASSERT (ARRAY_LEN (vnet_buffer (b0)->unused) *
201  sizeof (vnet_buffer (b0)->unused[0]) > sizeof (nowts),
202  "ping reply timestamp fits within remaining space of vnet_buffer unused data");
203  u64 *pnowts = (void *) &vnet_buffer (b0)->unused[0];
204  *pnowts = nowts;
205 
206  u32 event_id = is_ip6 ? PING_RESPONSE_IP6 : PING_RESPONSE_IP4;
207  vlib_process_signal_event_mt (vm, cli_process_id, event_id, bi0);
208 }
209 
210 
213  vlib_node_runtime_t * node,
214  uword cli_process_id, u16 id, u16 seq,
215  vlib_buffer_t * b0, int is_ip6)
216 {
217  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
218  {
219  icmp_echo_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
220  tr->id = id;
221  tr->seq = seq;
222  tr->cli_process_node = cli_process_id;
223  tr->is_ip6 = is_ip6;
224  }
225 }
226 
227 
230  vlib_node_runtime_t * node,
231  vlib_frame_t * frame, int do_trace,
232  int is_ip6)
233 {
234  u32 n_left_from, *from, *to_next;
235  icmp46_echo_reply_next_t next_index;
236 
237  from = vlib_frame_vector_args (frame);
238  n_left_from = frame->n_vectors;
239 
240  next_index = node->cached_next_index;
241 
242  while (n_left_from > 0)
243  {
244  u32 n_left_to_next;
245  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
246 
247  while (n_left_from > 0 && n_left_to_next > 0)
248  {
249  u32 bi0;
250  vlib_buffer_t *b0;
251  /*
252  * The buffers (replies) are either posted to the CLI thread
253  * awaiting for them for subsequent analysis and disposal,
254  * or are sent to the punt node.
255  *
256  * So the only "next" node is a punt, normally.
257  */
259 
260  bi0 = from[0];
261  b0 = vlib_get_buffer (vm, bi0);
262  from += 1;
263  n_left_from -= 1;
264 
265  u16 icmp_id = ~0;
266  u16 icmp_seq = ~0;
267  uword cli_process_id = PING_CLI_UNKNOWN_NODE;
268 
269  if (ip46_get_icmp_id_and_seq (vm, b0, &icmp_id, &icmp_seq, is_ip6))
270  {
271  cli_process_id = get_cli_process_id_by_icmp_id_mt (vm, icmp_id);
272  }
273 
274  if (do_trace)
275  ip46_echo_reply_maybe_trace_buffer (vm, node, cli_process_id,
276  icmp_id, icmp_seq, b0,
277  is_ip6);
278 
279  if (~0 == cli_process_id)
280  {
281  /* no outstanding requests for this reply, punt */
282  /* speculatively enqueue b0 to the current next frame */
283  to_next[0] = bi0;
284  to_next += 1;
285  n_left_to_next -= 1;
286  /* verify speculative enqueue, maybe switch current next frame */
287  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
288  to_next, n_left_to_next,
289  bi0, next0);
290  }
291  else
292  {
293  /* Post the buffer to CLI thread. It will take care of freeing it. */
294  ip46_post_icmp_reply_event (vm, cli_process_id, bi0, is_ip6);
295  }
296  }
297  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
298  }
299  return frame->n_vectors;
300 }
301 
302 /*
303  * select "with-trace" or "without-trace" codepaths upfront.
304  */
307  vlib_node_runtime_t * node,
308  vlib_frame_t * frame, int is_ip6)
309 {
310  if (node->flags & VLIB_NODE_FLAG_TRACE)
311  return ip46_icmp_echo_reply_inner_node_fn (vm, node, frame,
312  1 /* do_trace */ , is_ip6);
313  else
314  return ip46_icmp_echo_reply_inner_node_fn (vm, node, frame,
315  0 /* do_trace */ , is_ip6);
316 }
317 
318 static uword
320  vlib_node_runtime_t * node, vlib_frame_t * frame)
321 {
322  return ip46_icmp_echo_reply_outer_node_fn (vm, node, frame,
323  0 /* is_ip6 */ );
324 }
325 
326 static uword
328  vlib_node_runtime_t * node, vlib_frame_t * frame)
329 {
330  return ip46_icmp_echo_reply_outer_node_fn (vm, node, frame,
331  1 /* is_ip6 */ );
332 }
333 
334 /* *INDENT-OFF* */
336 {
337  .function = ip6_icmp_echo_reply_node_fn,
338  .name = "ip6-icmp-echo-reply",
339  .vector_size = sizeof (u32),
340  .format_trace = format_icmp_echo_trace,
341  .n_next_nodes = ICMP46_ECHO_REPLY_N_NEXT,
342  .next_nodes = {
343  [ICMP46_ECHO_REPLY_NEXT_DROP] = "ip6-drop",
344  [ICMP46_ECHO_REPLY_NEXT_PUNT] = "ip6-punt",
345  },
346 };
347 
349 {
350  .function = ip4_icmp_echo_reply_node_fn,
351  .name = "ip4-icmp-echo-reply",
352  .vector_size = sizeof (u32),
353  .format_trace = format_icmp_echo_trace,
354  .n_next_nodes = ICMP46_ECHO_REPLY_N_NEXT,
355  .next_nodes = {
356  [ICMP46_ECHO_REPLY_NEXT_DROP] = "ip4-drop",
357  [ICMP46_ECHO_REPLY_NEXT_PUNT] = "ip4-punt",
358  },
359 };
360 /* *INDENT-ON* */
361 
362 
363 /*
364  * A swarm of address-family agnostic helper functions
365  * for building and sending the ICMP echo request.
366  *
367  * Deliberately mostly "static" rather than "static inline"
368  * so one can trace them sanely if needed in debugger, if needed.
369  *
370  */
371 
374 {
375  return (offset % 256);
376 }
377 
378 /* Fill in the ICMP ECHO structure, return the safety-checked and possibly shrunk data_len */
379 static u16
381  int l4_header_offset,
382  icmp46_echo_request_t * icmp46_echo, u16 seq_host,
383  u16 id_host, u64 now, u16 data_len)
384 {
385  int i;
386 
387 
388  int l34_len =
389  l4_header_offset + sizeof (icmp46_header_t) +
390  offsetof (icmp46_echo_request_t, data);
391  int max_data_len = vlib_buffer_get_default_data_size (vm) - l34_len;
392 
393  int first_buf_data_len = data_len < max_data_len ? data_len : max_data_len;
394 
395  int payload_offset = 0;
396  for (i = 0; i < first_buf_data_len; i++)
397  icmp46_echo->data[i] = get_icmp_echo_payload_byte (payload_offset++);
398 
399  /* inspired by vlib_buffer_add_data */
400  vlib_buffer_t *hb = b0;
401  int remaining_data_len = data_len - first_buf_data_len;
402  while (remaining_data_len)
403  {
404  int this_buf_data_len =
405  remaining_data_len <
406  vlib_buffer_get_default_data_size (vm) ? remaining_data_len :
408  int n_alloc = vlib_buffer_alloc (vm, &b0->next_buffer, 1);
409  if (n_alloc < 1)
410  {
411  /* That is how much we have so far - return it... */
412  return (data_len - remaining_data_len);
413  }
414  b0->flags |= VLIB_BUFFER_NEXT_PRESENT;
415  /* move on to the newly acquired buffer */
416  b0 = vlib_get_buffer (vm, b0->next_buffer);
417  /* initialize the data */
418  for (i = 0; i < this_buf_data_len; i++)
419  {
420  b0->data[i] = get_icmp_echo_payload_byte (payload_offset++);
421  }
422  b0->current_length = this_buf_data_len;
423  b0->current_data = 0;
424  remaining_data_len -= this_buf_data_len;
425  }
426  hb->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
427  hb->current_length = l34_len + first_buf_data_len;
428  hb->total_length_not_including_first_buffer = data_len - first_buf_data_len;
429 
430  icmp46_echo->time_sent = now;
431  icmp46_echo->seq = clib_host_to_net_u16 (seq_host);
432  icmp46_echo->id = clib_host_to_net_u16 (id_host);
433  return data_len;
434 }
435 
436 
437 static u32
439 {
440  u32 fib_index = is_ip6 ?
441  ip6_fib_index_from_table_id (table_id) :
442  ip4_fib_index_from_table_id (table_id);
443  return fib_index;
444 }
445 
446 static fib_node_index_t
447 ip46_fib_table_lookup_host (u32 fib_index, ip46_address_t * pa46, int is_ip6)
448 {
449  fib_node_index_t fib_entry_index = is_ip6 ?
450  ip6_fib_table_lookup (fib_index, &pa46->ip6, 128) :
451  ip4_fib_table_lookup (ip4_fib_get (fib_index), &pa46->ip4, 32);
452  return fib_entry_index;
453 }
454 
455 static u32
456 ip46_get_resolving_interface (u32 fib_index, ip46_address_t * pa46,
457  int is_ip6)
458 {
459  u32 sw_if_index = ~0;
460  if (~0 != fib_index)
461  {
462  fib_node_index_t fib_entry_index;
463  fib_entry_index = ip46_fib_table_lookup_host (fib_index, pa46, is_ip6);
464  sw_if_index = fib_entry_get_resolving_interface (fib_entry_index);
465  }
466  return sw_if_index;
467 }
468 
469 static u32
471 {
472  u32 fib_table_index = is_ip6 ?
475  return fib_table_index;
476 
477 }
478 
479 
480 static int
481 ip46_fill_l3_header (ip46_address_t * pa46, vlib_buffer_t * b0, int is_ip6)
482 {
483  if (is_ip6)
484  {
486  /* Fill in ip6 header fields */
488  clib_host_to_net_u32 (0x6 << 28);
489  ip6->payload_length = 0; /* will be set later */
490  ip6->protocol = IP_PROTOCOL_ICMP6;
491  ip6->hop_limit = 255;
492  ip6->dst_address = pa46->ip6;
493  ip6->src_address = pa46->ip6;
494  return (sizeof (ip6_header_t));
495  }
496  else
497  {
499  /* Fill in ip4 header fields */
500  ip4->checksum = 0;
501  ip4->ip_version_and_header_length = 0x45;
502  ip4->tos = 0;
503  ip4->length = 0; /* will be set later */
504  ip4->fragment_id = 0;
505  ip4->flags_and_fragment_offset = 0;
506  ip4->ttl = 0xff;
507  ip4->protocol = IP_PROTOCOL_ICMP;
508  ip4->src_address = pa46->ip4;
509  ip4->dst_address = pa46->ip4;
510  return (sizeof (ip4_header_t));
511  }
512 }
513 
514 static int
516 {
517  int res;
518  if (is_ip6)
519  {
520  ip6_main_t *im = &ip6_main;
522  res =
523  ip6_src_address_for_packet (&im->lookup_main, sw_if_index,
524  &ip6->dst_address, &ip6->src_address);
525  }
526  else
527  {
528  ip4_main_t *im = &ip4_main;
530  res =
531  ip4_src_address_for_packet (&im->lookup_main, sw_if_index,
532  &ip4->src_address);
533  /* IP4 and IP6 paths have the inverse logic. Harmonize. */
534  res = !res;
535  }
536  return res;
537 }
538 
539 static void
541  int is_ip6)
542 {
543  void *format_addr_func;
544  void *paddr;
545  if (is_ip6)
546  {
548  format_addr_func = format_ip6_address;
549  paddr = &ip6->src_address;
550  }
551  else
552  {
554  format_addr_func = format_ip4_address;
555  paddr = &ip4->src_address;
556  }
557  vlib_cli_output (vm, "Source address: %U ", format_addr_func, paddr);
558 }
559 
560 static u16
561 ip46_fill_icmp_request_at (vlib_main_t * vm, int l4_offset, u16 seq_host,
562  u16 id_host, u16 data_len, vlib_buffer_t * b0,
563  int is_ip6)
564 {
565  icmp46_header_t *icmp46 = vlib_buffer_get_current (b0) + l4_offset;
566 
567  icmp46->type = is_ip6 ? ICMP6_echo_request : ICMP4_echo_request;
568  icmp46->code = 0;
569  icmp46->checksum = 0;
570 
571  icmp46_echo_request_t *icmp46_echo = (icmp46_echo_request_t *) (icmp46 + 1);
572 
573  data_len =
574  init_icmp46_echo_request (vm, b0, l4_offset, icmp46_echo, seq_host,
575  id_host, clib_cpu_time_now (), data_len);
576  return data_len;
577 }
578 
579 
580 /* Compute ICMP4 checksum with multibuffer support. */
581 u16
583  ip4_header_t * ip0)
584 {
585  ip_csum_t sum0;
586  u32 ip_header_length, payload_length_host_byte_order;
587  u32 n_this_buffer, n_bytes_left, n_ip_bytes_this_buffer;
588  u16 sum16;
589  void *data_this_buffer;
590 
591  ip_header_length = ip4_header_bytes (ip0);
592  payload_length_host_byte_order =
593  clib_net_to_host_u16 (ip0->length) - ip_header_length;
594 
595  /* ICMP4 checksum does not include the IP header */
596  sum0 = 0;
597 
598  n_bytes_left = n_this_buffer = payload_length_host_byte_order;
599  data_this_buffer = (void *) ip0 + ip_header_length;
600  n_ip_bytes_this_buffer =
601  p0->current_length - (((u8 *) ip0 - p0->data) - p0->current_data);
602  if (n_this_buffer + ip_header_length > n_ip_bytes_this_buffer)
603  {
604  n_this_buffer = n_ip_bytes_this_buffer > ip_header_length ?
605  n_ip_bytes_this_buffer - ip_header_length : 0;
606  }
607  while (1)
608  {
609  sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer);
610  n_bytes_left -= n_this_buffer;
611  if (n_bytes_left == 0)
612  break;
613 
614  ASSERT (p0->flags & VLIB_BUFFER_NEXT_PRESENT);
615  p0 = vlib_get_buffer (vm, p0->next_buffer);
616  data_this_buffer = vlib_buffer_get_current (p0);
617  n_this_buffer = p0->current_length;
618  }
619 
620  sum16 = ~ip_csum_fold (sum0);
621 
622  return sum16;
623 }
624 
625 
626 static void
627 ip46_fix_len_and_csum (vlib_main_t * vm, int l4_offset, u16 data_len,
628  vlib_buffer_t * b0, int is_ip6)
629 {
630  u16 payload_length =
631  data_len + sizeof (icmp46_header_t) + offsetof (icmp46_echo_request_t,
632  data);
633  u16 total_length = payload_length + l4_offset;
634  icmp46_header_t *icmp46 = vlib_buffer_get_current (b0) + l4_offset;
635  icmp46->checksum = 0;
636 
637  if (is_ip6)
638  {
640  ip6->payload_length = clib_host_to_net_u16 (payload_length);
641 
642  int bogus_length = 0;
643  icmp46->checksum =
644  ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip6, &bogus_length);
645  }
646  else
647  {
649  ip4->length = clib_host_to_net_u16 (total_length);
650 
651  ip4->checksum = ip4_header_checksum (ip4);
652  icmp46->checksum = ip4_icmp_compute_checksum (vm, b0, ip4);
653  }
654 }
655 
656 static u16
658 {
659  return count > VLIB_FRAME_SIZE ? VLIB_FRAME_SIZE : count;
660 }
661 
662 static int
664  int is_ip6)
665 {
666  vlib_frame_t *f = 0;
667  u32 lookup_node_index =
668  is_ip6 ? ip6_lookup_node.index : ip4_lookup_node.index;
669  int n_sent = 0;
670 
671  u16 n_to_send;
672 
673  /*
674  * Enqueue the packet, possibly as one or more frames of copies to make
675  * bursts. We enqueue b0 as the very last buffer, when there is no possibility
676  * for error in vlib_buffer_copy, so as to allow the caller to free it
677  * in case we encounter the error in the middle of the loop.
678  */
679  for (n_to_send = at_most_a_frame (burst), burst -= n_to_send; n_to_send > 0;
680  n_to_send = at_most_a_frame (burst), burst -= n_to_send)
681  {
682  f = vlib_get_frame_to_node (vm, lookup_node_index);
683  /* f can not be NULL here - frame allocation failure causes panic */
684 
685  u32 *to_next = vlib_frame_vector_args (f);
686  f->n_vectors = n_to_send;
687 
688  while (n_to_send > 1)
689  {
690  vlib_buffer_t *b0copy = vlib_buffer_copy (vm, b0);
691  if (PREDICT_FALSE (b0copy == NULL))
692  goto ship_and_ret;
693  *to_next++ = vlib_get_buffer_index (vm, b0copy);
694  n_to_send--;
695  n_sent++;
696  }
697 
698  /* n_to_send is guaranteed to equal 1 here */
699  if (burst > 0)
700  {
701  /* not the last burst, so still make a copy for the last buffer */
702  vlib_buffer_t *b0copy = vlib_buffer_copy (vm, b0);
703  if (PREDICT_FALSE (b0copy == NULL))
704  goto ship_and_ret;
705  n_to_send--;
706  *to_next++ = vlib_get_buffer_index (vm, b0copy);
707  }
708  else
709  {
710  /* put the original buffer as the last one of an error-free run */
711  *to_next++ = vlib_get_buffer_index (vm, b0);
712  }
713  vlib_put_frame_to_node (vm, lookup_node_index, f);
714  n_sent += f->n_vectors;
715  }
716  return n_sent;
717  /*
718  * We reach here in case we already enqueued one or more buffers
719  * and maybe one or more frames but could not make more copies.
720  * There is an outstanding frame - so ship it and return.
721  * Caller will have to free the b0 in this case, since
722  * we did not enqueue it here yet.
723  */
724 ship_and_ret:
725  n_sent += f->n_vectors;
726  vlib_put_frame_to_node (vm, lookup_node_index, f);
727  return n_sent;
728 }
729 
730 
731 /*
732  * An address-family agnostic ping send function.
733  */
734 
735 #define ERROR_OUT(e) do { err = e; goto done; } while (0)
736 
739  u32 table_id,
740  ip46_address_t * pa46,
742  u16 seq_host, u16 id_host, u16 data_len, u32 burst,
743  u8 verbose, int is_ip6)
744 {
745  int err = SEND_PING_OK;
746  u32 bi0 = 0;
747  int n_buf0 = 0;
748  vlib_buffer_t *b0;
749 
750  n_buf0 = vlib_buffer_alloc (vm, &bi0, 1);
751  if (n_buf0 < 1)
752  ERROR_OUT (SEND_PING_ALLOC_FAIL);
753 
754  b0 = vlib_get_buffer (vm, bi0);
756 
757  /*
758  * if the user did not provide a source interface,
759  * perform a resolution and use an interface
760  * via which it succeeds.
761  */
762  u32 fib_index;
763  if (~0 == sw_if_index)
764  {
765  fib_index = ip46_fib_index_from_table_id (table_id, is_ip6);
766  sw_if_index = ip46_get_resolving_interface (fib_index, pa46, is_ip6);
767  }
768  else
769  fib_index =
770  ip46_fib_table_get_index_for_sw_if_index (sw_if_index, is_ip6);
771 
772  if (~0 == fib_index)
773  ERROR_OUT (SEND_PING_NO_TABLE);
774  if (~0 == sw_if_index)
775  ERROR_OUT (SEND_PING_NO_INTERFACE);
776 
777  vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index;
778  vnet_buffer (b0)->sw_if_index[VLIB_TX] = fib_index;
779 
780  int l4_header_offset = ip46_fill_l3_header (pa46, b0, is_ip6);
781 
782  /* set the src address in the buffer */
783  if (!ip46_set_src_address (sw_if_index, b0, is_ip6))
784  ERROR_OUT (SEND_PING_NO_SRC_ADDRESS);
785  if (verbose)
786  ip46_print_buffer_src_address (vm, b0, is_ip6);
787 
788  data_len =
789  ip46_fill_icmp_request_at (vm, l4_header_offset, seq_host, id_host,
790  data_len, b0, is_ip6);
791 
792  ip46_fix_len_and_csum (vm, l4_header_offset, data_len, b0, is_ip6);
793 
794  int n_sent = ip46_enqueue_packet (vm, b0, burst, is_ip6);
795  if (n_sent < burst)
796  err = SEND_PING_NO_BUFFERS;
797 
798 done:
799  if (err != SEND_PING_OK)
800  {
801  if (n_buf0 > 0)
802  vlib_buffer_free (vm, &bi0, 1);
803  }
804  return err;
805 }
806 
809  u32 table_id, ip6_address_t * pa6,
810  u32 sw_if_index, u16 seq_host, u16 id_host, u16 data_len,
811  u32 burst, u8 verbose)
812 {
813  ip46_address_t target;
814  target.ip6 = *pa6;
815  return send_ip46_ping (vm, table_id, &target, sw_if_index, seq_host,
816  id_host, data_len, burst, verbose, 1 /* is_ip6 */ );
817 }
818 
821  u32 table_id, ip4_address_t * pa4,
822  u32 sw_if_index, u16 seq_host, u16 id_host, u16 data_len,
823  u32 burst, u8 verbose)
824 {
825  ip46_address_t target;
826  ip46_address_set_ip4 (&target, pa4);
827  return send_ip46_ping (vm, table_id, &target, sw_if_index, seq_host,
828  id_host, data_len, burst, verbose, 0 /* is_ip6 */ );
829 }
830 
831 static void
833 {
834  vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
835  int l4_offset;
836  void *paddr;
837  void *format_addr_func;
838  u16 payload_length;
839  u8 ttl;
840  if (is_ip6)
841  {
843  paddr = (void *) &ip6->src_address;
844  format_addr_func = (void *) format_ip6_address;
845  ttl = ip6->hop_limit;
846  l4_offset = sizeof (ip6_header_t); // FIXME - EH processing ?
847  payload_length = clib_net_to_host_u16 (ip6->payload_length);
848  }
849  else
850  {
852  paddr = (void *) &ip4->src_address;
853  format_addr_func = (void *) format_ip4_address;
854  ttl = ip4->ttl;
855  l4_offset = ip4_header_bytes (ip4);
856  payload_length =
857  clib_net_to_host_u16 (ip4->length) + ip4_header_bytes (ip4);
858  }
859  icmp46_header_t *icmp = vlib_buffer_get_current (b0) + l4_offset;
860  icmp46_echo_request_t *icmp_echo = (icmp46_echo_request_t *) (icmp + 1);
861  u64 *dataplane_ts = (u64 *) & vnet_buffer (b0)->unused[0];
862 
863  f64 clocks_per_second = ((f64) vm->clib_time.clocks_per_second);
864  f64 rtt =
865  ((f64) (*dataplane_ts - icmp_echo->time_sent)) / clocks_per_second;
866 
867  vlib_cli_output (vm,
868  "%d bytes from %U: icmp_seq=%d ttl=%d time=%.4f ms",
869  payload_length,
870  format_addr_func,
871  paddr,
872  clib_host_to_net_u16 (icmp_echo->seq), ttl, rtt * 1000.0);
873 }
874 
875 /*
876  * Perform the ping run with the given parameters in the current CLI process.
877  * Depending on whether pa4 or pa6 is set, runs IPv4 or IPv6 ping.
878  * The amusing side effect is of course if both are set, then both pings are sent.
879  * This behavior can be used to ping a dualstack host over IPv4 and IPv6 at once.
880  */
881 
882 static void
885  f64 ping_interval, u32 ping_repeat, u32 data_len,
886  u32 ping_burst, u32 verbose)
887 {
888  int i;
889  uword curr_proc = vlib_current_process (vm);
890  u32 n_replies = 0;
891  u32 n_requests = 0;
892  u16 icmp_id;
893 
894  static u32 rand_seed = 0;
895 
896  if (PREDICT_FALSE (!rand_seed))
897  rand_seed = random_default_seed ();
898 
899  icmp_id = random_u32 (&rand_seed) & 0xffff;
900 
901  while (~0 != get_cli_process_id_by_icmp_id_mt (vm, icmp_id))
902  {
903  vlib_cli_output (vm, "ICMP ID collision at %d, incrementing", icmp_id);
904  icmp_id++;
905  }
906 
907  set_cli_process_id_by_icmp_id_mt (vm, icmp_id, curr_proc);
908 
909  for (i = 1; i <= ping_repeat; i++)
910  {
911  send_ip46_ping_result_t res = SEND_PING_OK;
912  f64 sleep_interval;
913  f64 time_ping_sent = vlib_time_now (vm);
914  if (pa6)
915  {
916  res = send_ip6_ping (vm, table_id,
917  pa6, sw_if_index, i, icmp_id,
918  data_len, ping_burst, verbose);
919  if (SEND_PING_OK == res)
920  n_requests += ping_burst;
921  else
922  vlib_cli_output (vm, "Failed: %U", format_ip46_ping_result, res);
923  }
924  if (pa4)
925  {
926  res = send_ip4_ping (vm, table_id, pa4,
927  sw_if_index, i, icmp_id, data_len,
928  ping_burst, verbose);
929  if (SEND_PING_OK == res)
930  n_requests += ping_burst;
931  else
932  vlib_cli_output (vm, "Failed: %U", format_ip46_ping_result, res);
933  }
934 
935  /* Collect and print the responses until it is time to send a next ping */
936 
937  while ((i <= ping_repeat)
938  &&
939  ((sleep_interval =
940  time_ping_sent + ping_interval - vlib_time_now (vm)) > 0.0))
941  {
942  uword event_type, *event_data = 0;
943  vlib_process_wait_for_event_or_clock (vm, sleep_interval);
944  event_type = vlib_process_get_events (vm, &event_data);
945  switch (event_type)
946  {
947  case ~0: /* no events => timeout */
948  break;
949  case PING_RESPONSE_IP6:
950  /* fall-through */
951  case PING_RESPONSE_IP4:
952  {
953  int ii;
954  int is_ip6 = (event_type == PING_RESPONSE_IP6);
955  for (ii = 0; ii < vec_len (event_data); ii++)
956  {
957  u32 bi0 = event_data[ii];
958  print_ip46_icmp_reply (vm, bi0, is_ip6);
959  n_replies++;
960  if (0 != bi0)
961  vlib_buffer_free (vm, &bi0, 1);
962  }
963  }
964  break;
965  default:
966  /* someone pressed a key, abort */
967  vlib_cli_output (vm, "Aborted due to a keypress.");
968  goto double_break;
969  break;
970  }
971  vec_free (event_data);
972  }
973  }
974 double_break:
975  vlib_cli_output (vm, "\n");
976  {
977  float loss =
978  (0 ==
979  n_requests) ? 0 : 100.0 * ((float) n_requests -
980  (float) n_replies) / (float) n_requests;
981  vlib_cli_output (vm,
982  "Statistics: %u sent, %u received, %f%% packet loss\n",
983  n_requests, n_replies, loss);
985  }
986 }
987 
988 
989 
990 static clib_error_t *
992  unformat_input_t * input, vlib_cli_command_t * cmd)
993 {
994  ip4_address_t a4;
995  ip6_address_t a6;
996  clib_error_t *error = 0;
997  u32 ping_repeat = 5;
998  u32 ping_burst = 1;
999  u8 ping_ip4, ping_ip6;
1000  vnet_main_t *vnm = vnet_get_main ();
1001  u32 data_len = PING_DEFAULT_DATA_LEN;
1002  u32 verbose = 0;
1003  f64 ping_interval = PING_DEFAULT_INTERVAL;
1005 
1006  table_id = 0;
1007  ping_ip4 = ping_ip6 = 0;
1008  sw_if_index = ~0;
1009 
1010  if (unformat (input, "%U", unformat_ip4_address, &a4))
1011  {
1012  ping_ip4 = 1;
1013  }
1014  else if (unformat (input, "%U", unformat_ip6_address, &a6))
1015  {
1016  ping_ip6 = 1;
1017  }
1018  else if (unformat (input, "ipv4"))
1019  {
1020  if (unformat (input, "%U", unformat_ip4_address, &a4))
1021  {
1022  ping_ip4 = 1;
1023  }
1024  else
1025  {
1026  error =
1027  clib_error_return (0,
1028  "expecting IPv4 address but got `%U'",
1029  format_unformat_error, input);
1030  }
1031  }
1032  else if (unformat (input, "ipv6"))
1033  {
1034  if (unformat (input, "%U", unformat_ip6_address, &a6))
1035  {
1036  ping_ip6 = 1;
1037  }
1038  else
1039  {
1040  error =
1041  clib_error_return (0,
1042  "expecting IPv6 address but got `%U'",
1043  format_unformat_error, input);
1044  }
1045  }
1046  else
1047  {
1048  error =
1049  clib_error_return (0,
1050  "expecting IP4/IP6 address `%U'. Usage: ping <addr> [source <intf>] [size <datasz>] [repeat <count>] [verbose]",
1051  format_unformat_error, input);
1052  goto done;
1053  }
1054 
1055  /* allow for the second AF in the same ping */
1056  if (!ping_ip4 && (unformat (input, "ipv4")))
1057  {
1058  if (unformat (input, "%U", unformat_ip4_address, &a4))
1059  {
1060  ping_ip4 = 1;
1061  }
1062  }
1063  else if (!ping_ip6 && (unformat (input, "ipv6")))
1064  {
1065  if (unformat (input, "%U", unformat_ip6_address, &a6))
1066  {
1067  ping_ip6 = 1;
1068  }
1069  }
1070 
1071  /* parse the rest of the parameters in a cycle */
1072  while (!unformat_eof (input, NULL))
1073  {
1074  if (unformat (input, "source"))
1075  {
1076  if (!unformat_user
1077  (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
1078  {
1079  error =
1080  clib_error_return (0,
1081  "unknown interface `%U'",
1082  format_unformat_error, input);
1083  goto done;
1084  }
1085  }
1086  else if (unformat (input, "size"))
1087  {
1088  if (!unformat (input, "%u", &data_len))
1089  {
1090  error =
1091  clib_error_return (0,
1092  "expecting size but got `%U'",
1093  format_unformat_error, input);
1094  goto done;
1095  }
1096  if (data_len > PING_MAXIMUM_DATA_SIZE)
1097  {
1098  error =
1099  clib_error_return (0,
1100  "%d is bigger than maximum allowed payload size %d",
1101  data_len, PING_MAXIMUM_DATA_SIZE);
1102  goto done;
1103  }
1104  }
1105  else if (unformat (input, "table-id"))
1106  {
1107  if (!unformat (input, "%u", &table_id))
1108  {
1109  error =
1110  clib_error_return (0,
1111  "expecting table-id but got `%U'",
1112  format_unformat_error, input);
1113  goto done;
1114  }
1115  }
1116  else if (unformat (input, "interval"))
1117  {
1118  if (!unformat (input, "%f", &ping_interval))
1119  {
1120  error =
1121  clib_error_return (0,
1122  "expecting interval (floating point number) got `%U'",
1123  format_unformat_error, input);
1124  goto done;
1125  }
1126  }
1127  else if (unformat (input, "repeat"))
1128  {
1129  if (!unformat (input, "%u", &ping_repeat))
1130  {
1131  error =
1132  clib_error_return (0,
1133  "expecting repeat count but got `%U'",
1134  format_unformat_error, input);
1135  goto done;
1136  }
1137  }
1138  else if (unformat (input, "burst"))
1139  {
1140  if (!unformat (input, "%u", &ping_burst))
1141  {
1142  error =
1143  clib_error_return (0,
1144  "expecting burst count but got `%U'",
1145  format_unformat_error, input);
1146  goto done;
1147  }
1148  }
1149  else if (unformat (input, "verbose"))
1150  {
1151  verbose = 1;
1152  }
1153  else
1154  {
1155  error = clib_error_return (0, "unknown input `%U'",
1156  format_unformat_error, input);
1157  goto done;
1158  }
1159  }
1160 
1161 /*
1162  * Operationally, one won't (and shouldn't) need to send more than a frame worth of pings.
1163  * But it may be handy during the debugging.
1164  */
1165 
1166 #ifdef CLIB_DEBUG
1167 #define MAX_PING_BURST (10*VLIB_FRAME_SIZE)
1168 #else
1169 #define MAX_PING_BURST (VLIB_FRAME_SIZE)
1170 #endif
1171 
1172  if (ping_burst < 1 || ping_burst > MAX_PING_BURST)
1173  return clib_error_return (0, "burst size must be between 1 and %u",
1174  MAX_PING_BURST);
1175 
1176  run_ping_ip46_address (vm, table_id, ping_ip4 ? &a4 : NULL,
1177  ping_ip6 ? &a6 : NULL, sw_if_index, ping_interval,
1178  ping_repeat, data_len, ping_burst, verbose);
1179 done:
1180  return error;
1181 }
1182 
1183 /*?
1184  * This command sends an ICMP ECHO_REQUEST to network hosts. The address
1185  * can be an IPv4 or IPv6 address (or both at the same time).
1186  *
1187  * @cliexpar
1188  * @parblock
1189  * Example of how ping an IPv4 address:
1190  * @cliexstart{ping 172.16.1.2 source GigabitEthernet2/0/0 repeat 2}
1191  * 64 bytes from 172.16.1.2: icmp_seq=1 ttl=64 time=.1090 ms
1192  * 64 bytes from 172.16.1.2: icmp_seq=2 ttl=64 time=.0914 ms
1193  *
1194  * Statistics: 2 sent, 2 received, 0% packet loss
1195  * @cliexend
1196  *
1197  * Example of how ping both an IPv4 address and IPv6 address at the same time:
1198  * @cliexstart{ping 172.16.1.2 ipv6 fe80::24a5:f6ff:fe9c:3a36 source GigabitEthernet2/0/0 repeat 2 verbose}
1199  * Adjacency index: 10, sw_if_index: 1
1200  * Adj: ip6-discover-neighbor
1201  * Adj Interface: 0
1202  * Forced set interface: 1
1203  * Adjacency index: 0, sw_if_index: 4294967295
1204  * Adj: ip4-miss
1205  * Adj Interface: 0
1206  * Forced set interface: 1
1207  * Source address: 172.16.1.1
1208  * 64 bytes from 172.16.1.2: icmp_seq=1 ttl=64 time=.1899 ms
1209  * Adjacency index: 10, sw_if_index: 1
1210  * Adj: ip6-discover-neighbor
1211  * Adj Interface: 0
1212  * Forced set interface: 1
1213  * Adjacency index: 0, sw_if_index: 4294967295
1214  * Adj: ip4-miss
1215  * Adj Interface: 0
1216  * Forced set interface: 1
1217  * Source address: 172.16.1.1
1218  * 64 bytes from 172.16.1.2: icmp_seq=2 ttl=64 time=.0910 ms
1219  *
1220  * Statistics: 4 sent, 2 received, 50% packet loss
1221  * @cliexend
1222  * @endparblock
1223 ?*/
1224 /* *INDENT-OFF* */
1225 VLIB_CLI_COMMAND (ping_command, static) =
1226 {
1227  .path = "ping",
1228  .function = ping_ip_address,
1229  .short_help = "ping {<ip-addr> | ipv4 <ip4-addr> | ipv6 <ip6-addr>}"
1230  " [ipv4 <ip4-addr> | ipv6 <ip6-addr>] [source <interface>]"
1231  " [size <pktsize:60>] [interval <sec:1>] [repeat <cnt:5>] [table-id <id:0>]"
1232  " [burst <count:1>] [verbose]",
1233  .is_mp_safe = 1,
1234 };
1235 /* *INDENT-ON* */
1236 
1237 static clib_error_t *
1239 {
1241  ping_main_t *pm = &ping_main;
1242 
1243  pm->ip6_main = &ip6_main;
1244  pm->ip4_main = &ip4_main;
1245  icmp6_register_type (vm, ICMP6_echo_reply, ip6_icmp_echo_reply_node.index);
1246  ip4_icmp_register_type (vm, ICMP4_echo_reply,
1247  ip4_icmp_echo_reply_node.index);
1248  if (tm->n_vlib_mains > 1)
1250  return 0;
1251 }
1252 
1254 
1255 /*
1256  * fd.io coding-style-patch-verification: ON
1257  *
1258  * Local Variables:
1259  * eval: (c-set-style "gnu")
1260  * End:
1261  */
u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index, VLIB_BUFFER_IS_TRACED: trace this buffer.
Definition: buffer.h:124
static_always_inline void clear_cli_process_id_by_icmp_id_mt(vlib_main_t *vm, u16 icmp_id)
Definition: ping.c:141
icmp46_echo_reply_next_t
Definition: ping.h:84
static void ip46_fix_len_and_csum(vlib_main_t *vm, int l4_offset, u16 data_len, vlib_buffer_t *b0, int is_ip6)
Definition: ping.c:627
#define CLIB_UNUSED(x)
Definition: clib.h:82
static uword random_default_seed(void)
Default random seed (unix/linux user-mode)
Definition: random.h:91
static f64 vlib_process_wait_for_event_or_clock(vlib_main_t *vm, f64 dt)
Suspend a cooperative multi-tasking thread Waits for an event, or for the indicated number of seconds...
Definition: node_funcs.h:673
static int ip46_fill_l3_header(ip46_address_t *pa46, vlib_buffer_t *b0, int is_ip6)
Definition: ping.c:481
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:865
ip4_address_t src_address
Definition: ip4_packet.h:170
static int ip46_set_src_address(u32 sw_if_index, vlib_buffer_t *b0, int is_ip6)
Definition: ping.c:515
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
static uword vlib_current_process(vlib_main_t *vm)
Definition: node_funcs.h:400
unformat_function_t unformat_eof
Definition: format.h:293
i16 current_data
signed offset in data[], pre_data[] that we are currently processing.
Definition: buffer.h:110
unsigned long u64
Definition: types.h:89
#define NULL
Definition: clib.h:58
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:258
f64 clocks_per_second
Definition: time.h:53
static u32 ip46_fib_index_from_table_id(u32 table_id, int is_ip6)
Definition: ping.c:438
static_always_inline void clib_spinlock_unlock_if_init(clib_spinlock_t *p)
Definition: lock.h:108
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:113
static_always_inline int ip46_get_icmp_id_and_seq(vlib_main_t *vm, vlib_buffer_t *b0, u16 *out_icmp_id, u16 *out_icmp_seq, int is_ip6)
Definition: ping.c:159
u8 data[0]
Packet data.
Definition: buffer.h:181
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:522
static u64 clib_cpu_time_now(void)
Definition: time.h:75
static send_ip46_ping_result_t send_ip46_ping(vlib_main_t *vm, u32 table_id, ip46_address_t *pa46, u32 sw_if_index, u16 seq_host, u16 id_host, u16 data_len, u32 burst, u8 verbose, int is_ip6)
Definition: ping.c:738
clib_spinlock_t ping_run_check_lock
Definition: ping.h:60
int i
ip4_main_t * ip4_main
Definition: ping.h:56
static int ip46_enqueue_packet(vlib_main_t *vm, vlib_buffer_t *b0, u32 burst, int is_ip6)
Definition: ping.c:663
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:989
ip_lookup_main_t lookup_main
Definition: ip4.h:107
uword ip_csum_t
Definition: ip_packet.h:219
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
u16 flags_and_fragment_offset
Definition: ip4_packet.h:151
unformat_function_t unformat_vnet_sw_interface
u8 data[128]
Definition: ipsec.api:249
clib_time_t clib_time
Definition: main.h:72
static u16 init_icmp46_echo_request(vlib_main_t *vm, vlib_buffer_t *b0, int l4_header_offset, icmp46_echo_request_t *icmp46_echo, u16 seq_host, u16 id_host, u64 now, u16 data_len)
Definition: ping.c:380
ip6_address_t src_address
Definition: ip6_packet.h:383
u8 * format_icmp_echo_trace(u8 *s, va_list *va)
Definition: ping.c:44
unsigned char u8
Definition: types.h:56
static vlib_buffer_t * vlib_buffer_copy(vlib_main_t *vm, vlib_buffer_t *b)
Definition: buffer_funcs.h:964
static void print_ip46_icmp_reply(vlib_main_t *vm, u32 bi0, int is_ip6)
Definition: ping.c:832
send_ip46_ping_result_t
Definition: ping.h:37
double f64
Definition: types.h:142
vlib_node_registration_t ip4_lookup_node
(constructor) VLIB_REGISTER_NODE (ip4_lookup_node)
Definition: ip4_forward.c:101
static uword ip4_icmp_echo_reply_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ping.c:319
u32 ip4_fib_table_get_index_for_sw_if_index(u32 sw_if_index)
Definition: ip4_fib.c:224
format_function_t format_ip4_address
Definition: format.h:75
static_always_inline u8 get_icmp_echo_payload_byte(int offset)
Definition: ping.c:373
#define static_always_inline
Definition: clib.h:99
unformat_function_t unformat_ip4_address
Definition: format.h:70
vl_api_interface_index_t sw_if_index
Definition: gre.api:50
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:173
static uword vlib_process_get_events(vlib_main_t *vm, uword **data_vector)
Return the first event type which has occurred and a vector of per-event data of that type...
Definition: node_funcs.h:516
ip4_address_t dst_address
Definition: ip4_packet.h:170
static u16 at_most_a_frame(u32 count)
Definition: ping.c:657
vlib_frame_t * vlib_get_frame_to_node(vlib_main_t *vm, u32 to_node_index)
Definition: main.c:187
#define clib_error_return(e, args...)
Definition: error.h:99
unsigned int u32
Definition: types.h:88
static u32 ip46_get_resolving_interface(u32 fib_index, ip46_address_t *pa46, int is_ip6)
Definition: ping.c:456
#define VLIB_FRAME_SIZE
Definition: node.h:376
u32 ip6_fib_table_get_index_for_sw_if_index(u32 sw_if_index)
Definition: ip6_fib.c:326
static u32 vlib_get_buffer_index(vlib_main_t *vm, void *p)
Translate buffer pointer into buffer index.
Definition: buffer_funcs.h:257
static u8 * format_ip46_ping_result(u8 *s, va_list *args)
Definition: ping.c:67
static void clib_spinlock_init(clib_spinlock_t *p)
Definition: lock.h:61
void ip4_icmp_register_type(vlib_main_t *vm, icmp4_type_t type, u32 node_index)
Definition: icmp4.c:737
static clib_error_t * ping_cli_init(vlib_main_t *vm)
Definition: ping.c:1238
static u32 ip6_fib_index_from_table_id(u32 table_id)
Definition: ip6_fib.h:173
struct _unformat_input_t unformat_input_t
unsigned short u16
Definition: types.h:57
void vlib_put_frame_to_node(vlib_main_t *vm, u32 to_node_index, vlib_frame_t *f)
Definition: main.c:196
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:229
#define PREDICT_FALSE(x)
Definition: clib.h:111
#define vec_del1(v, i)
Delete the element at index I.
Definition: vec.h:804
#define MAX_PING_BURST
static u16 ip46_fill_icmp_request_at(vlib_main_t *vm, int l4_offset, u16 seq_host, u16 id_host, u16 data_len, vlib_buffer_t *b0, int is_ip6)
Definition: ping.c:561
#define vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, bi0, next0)
Finish enqueueing one buffer forward in the graph.
Definition: buffer_node.h:218
#define vlib_get_next_frame(vm, node, next_index, vectors, n_vectors_left)
Get pointer to next frame vector data by (vlib_node_runtime_t, next_index).
Definition: node_funcs.h:338
static_always_inline uword get_cli_process_id_by_icmp_id_mt(vlib_main_t *vm, u16 icmp_id)
Definition: ping.c:96
u32 fib_entry_get_resolving_interface(fib_node_index_t entry_index)
Definition: fib_entry.c:1448
unformat_function_t unformat_ip6_address
Definition: format.h:91
static_always_inline u32 vlib_buffer_get_default_data_size(vlib_main_t *vm)
Definition: buffer_funcs.h:96
fib_node_index_t ip4_fib_table_lookup(const ip4_fib_t *fib, const ip4_address_t *addr, u32 len)
Definition: ip4_fib.c:291
static int ip6_src_address_for_packet(ip_lookup_main_t *lm, u32 sw_if_index, const ip6_address_t *dst, ip6_address_t *src)
Definition: ip6.h:308
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169
#define PING_DEFAULT_INTERVAL
Definition: ping.h:66
u16 n_vectors
Definition: node.h:395
format_function_t format_ip6_address
Definition: format.h:93
vlib_main_t * vm
Definition: buffer.c:312
static vlib_node_registration_t ip6_icmp_echo_reply_node
(constructor) VLIB_REGISTER_NODE (ip6_icmp_echo_reply_node)
Definition: ping.c:335
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:341
static void vlib_process_signal_event_mt(vlib_main_t *vm, uword node_index, uword type_opaque, uword data)
Signal event to process from any thread.
Definition: node_funcs.h:958
static ip4_fib_t * ip4_fib_get(u32 index)
Get the FIB at the given index.
Definition: ip4_fib.h:113
static vlib_node_registration_t ip4_icmp_echo_reply_node
(constructor) VLIB_REGISTER_NODE (ip4_icmp_echo_reply_node)
Definition: ping.c:348
ip6_main_t * ip6_main
Definition: ping.h:55
u8 ttl
Definition: fib_types.api:26
static ip_csum_t ip_incremental_checksum(ip_csum_t sum, void *_data, uword n_bytes)
Definition: ip_packet.h:292
static send_ip46_ping_result_t send_ip4_ping(vlib_main_t *vm, u32 table_id, ip4_address_t *pa4, u32 sw_if_index, u16 seq_host, u16 id_host, u16 data_len, u32 burst, u8 verbose)
Definition: ping.c:820
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:30
ping_main_t ping_main
Definition: ping.c:23
static_always_inline uword ip46_icmp_echo_reply_outer_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int is_ip6)
Definition: ping.c:306
static u32 ip4_fib_index_from_table_id(u32 table_id)
Definition: ip4_fib.h:145
#define ARRAY_LEN(x)
Definition: clib.h:62
void vlib_put_next_frame(vlib_main_t *vm, vlib_node_runtime_t *r, u32 next_index, u32 n_vectors_left)
Release pointer to next frame vector data.
Definition: main.c:458
static void run_ping_ip46_address(vlib_main_t *vm, u32 table_id, ip4_address_t *pa4, ip6_address_t *pa6, u32 sw_if_index, f64 ping_interval, u32 ping_repeat, u32 data_len, u32 ping_burst, u32 verbose)
Definition: ping.c:883
uword cli_process_id
Definition: ping.h:50
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:155
u16 ip6_tcp_udp_icmp_compute_checksum(vlib_main_t *vm, vlib_buffer_t *p0, ip6_header_t *ip0, int *bogus_lengthp)
Definition: ip6_forward.c:906
vlib_node_registration_t ip6_lookup_node
(constructor) VLIB_REGISTER_NODE (ip6_lookup_node)
Definition: ip6_forward.c:552
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:513
ping_run_t * active_ping_runs
Definition: ping.h:58
#define ASSERT(truth)
static_always_inline void ip46_post_icmp_reply_event(vlib_main_t *vm, uword cli_process_id, u32 bi0, int is_ip6)
Definition: ping.c:191
ip6_main_t ip6_main
Definition: ip6_forward.c:2671
ip_lookup_main_t lookup_main
Definition: ip6.h:179
#define PING_MAXIMUM_DATA_SIZE
Definition: ping.h:68
ip_dscp_t tos
Definition: ip4_packet.h:141
#define ip46_address_set_ip4(ip46, ip)
Definition: ip6_packet.h:90
IPv4 main type.
Definition: ip4.h:105
size_t count
Definition: vapi.c:47
#define PING_CLI_UNKNOWN_NODE
Definition: ping.h:70
static void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
Definition: trace_funcs.h:55
template key/value backing page structure
Definition: bihash_doc.h:44
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:370
Definition: defs.h:47
u16 payload_length
Definition: ip6_packet.h:374
void icmp6_register_type(vlib_main_t *vm, icmp6_type_t type, u32 node_index)
Definition: icmp6.c:750
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
#define ERROR_OUT(e)
Definition: ping.c:735
u32 next_buffer
Next buffer for this linked-list of buffers.
Definition: buffer.h:140
u32 cli_process_node
Definition: ping.c:38
#define STATIC_ASSERT(truth,...)
#define VLIB_BUFFER_TRACE_TRAJECTORY_INIT(b)
Definition: buffer.h:489
VLIB buffer representation.
Definition: buffer.h:102
u64 uword
Definition: types.h:112
static u32 ip46_fib_table_get_index_for_sw_if_index(u32 sw_if_index, int is_ip6)
Definition: ping.c:470
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:244
u16 ip4_icmp_compute_checksum(vlib_main_t *vm, vlib_buffer_t *p0, ip4_header_t *ip0)
Definition: ping.c:582
static void ip46_print_buffer_src_address(vlib_main_t *vm, vlib_buffer_t *b0, int is_ip6)
Definition: ping.c:540
static_always_inline void set_cli_process_id_by_icmp_id_mt(vlib_main_t *vm, u16 icmp_id, uword cli_process_id)
Definition: ping.c:117
#define vnet_buffer(b)
Definition: buffer.h:361
static uword ip6_icmp_echo_reply_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ping.c:327
static u32 random_u32(u32 *seed)
32-bit random number generator
Definition: random.h:69
u16 icmp_id
Definition: ping.h:49
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
ip4_main_t ip4_main
Global ip4 main structure.
Definition: ip4_forward.c:921
static vlib_thread_main_t * vlib_get_thread_main()
Definition: global_funcs.h:32
#define vec_foreach(var, vec)
Vector iterator.
fib_node_index_t ip6_fib_table_lookup(u32 fib_index, const ip6_address_t *addr, u32 len)
Definition: ip6_fib.c:172
u16 flags
Copy of main node flags.
Definition: node.h:507
#define PING_DEFAULT_DATA_LEN
Definition: ping.h:65
u32 id
Definition: udp.api:45
static int ip4_header_bytes(const ip4_header_t *i)
Definition: ip4_packet.h:235
u8 ip_version_and_header_length
Definition: ip4_packet.h:138
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:301
static clib_error_t * ping_ip_address(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ping.c:991
static_always_inline void ip46_echo_reply_maybe_trace_buffer(vlib_main_t *vm, vlib_node_runtime_t *node, uword cli_process_id, u16 id, u16 seq, vlib_buffer_t *b0, int is_ip6)
Definition: ping.c:212
static send_ip46_ping_result_t send_ip6_ping(vlib_main_t *vm, u32 table_id, ip6_address_t *pa6, u32 sw_if_index, u16 seq_host, u16 id_host, u16 data_len, u32 burst, u8 verbose)
Definition: ping.c:808
u32 table_id
Definition: fib_types.api:118
static_always_inline uword ip46_icmp_echo_reply_inner_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int do_trace, int is_ip6)
Definition: ping.c:229
u32 total_length_not_including_first_buffer
Only valid for first buffer in chain.
Definition: buffer.h:167
static u32 vlib_buffer_alloc(vlib_main_t *vm, u32 *buffers, u32 n_buffers)
Allocate buffers into supplied array.
Definition: buffer_funcs.h:612
static fib_node_index_t ip46_fib_table_lookup_host(u32 fib_index, ip46_address_t *pa46, int is_ip6)
Definition: ping.c:447
static int ip4_src_address_for_packet(ip_lookup_main_t *lm, u32 sw_if_index, ip4_address_t *src)
Definition: ip4.h:211
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:768
static_always_inline void clib_spinlock_lock_if_init(clib_spinlock_t *p)
Definition: lock.h:93
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:85
static u16 ip4_header_checksum(ip4_header_t *i)
Definition: ip4_packet.h:247
static u16 ip_csum_fold(ip_csum_t c)
Definition: ip_packet.h:275
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
Definition: defs.h:46
ip6_address_t dst_address
Definition: ip6_packet.h:383