FD.io VPP  v19.01.3-6-g70449b9b9
Vector Packet Processing
ping.c
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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 suppport 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_DATA_SIZE - 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_DATA_SIZE ? remaining_data_len : VLIB_BUFFER_DATA_SIZE;
407  int n_alloc = vlib_buffer_alloc_from_free_list (vm, &b0->next_buffer, 1,
408  hb->free_list_index);
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
438 ip46_fib_index_from_table_id (u32 table_id, int is_ip6)
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;
750 
751  n_buf0 = vlib_buffer_alloc (vm, &bi0, 1);
752  if (n_buf0 < 1)
753  ERROR_OUT (SEND_PING_ALLOC_FAIL);
754 
755  b0 = vlib_get_buffer (vm, bi0);
759 
760  /*
761  * if the user did not provide a source interface,
762  * perform a resolution and use an interface
763  * via which it succeeds.
764  */
765  u32 fib_index;
766  if (~0 == sw_if_index)
767  {
768  fib_index = ip46_fib_index_from_table_id (table_id, is_ip6);
769  sw_if_index = ip46_get_resolving_interface (fib_index, pa46, is_ip6);
770  }
771  else
772  fib_index =
773  ip46_fib_table_get_index_for_sw_if_index (sw_if_index, is_ip6);
774 
775  if (~0 == fib_index)
776  ERROR_OUT (SEND_PING_NO_TABLE);
777  if (~0 == sw_if_index)
778  ERROR_OUT (SEND_PING_NO_INTERFACE);
779 
780  vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index;
781  vnet_buffer (b0)->sw_if_index[VLIB_TX] = fib_index;
782 
783  int l4_header_offset = ip46_fill_l3_header (pa46, b0, is_ip6);
784 
785  /* set the src address in the buffer */
786  if (!ip46_set_src_address (sw_if_index, b0, is_ip6))
787  ERROR_OUT (SEND_PING_NO_SRC_ADDRESS);
788  if (verbose)
789  ip46_print_buffer_src_address (vm, b0, is_ip6);
790 
791  data_len =
792  ip46_fill_icmp_request_at (vm, l4_header_offset, seq_host, id_host,
793  data_len, b0, is_ip6);
794 
795  ip46_fix_len_and_csum (vm, l4_header_offset, data_len, b0, is_ip6);
796 
797  int n_sent = ip46_enqueue_packet (vm, b0, burst, is_ip6);
798  if (n_sent < burst)
799  err = SEND_PING_NO_BUFFERS;
800 
801 done:
802  if (err != SEND_PING_OK)
803  {
804  if (n_buf0 > 0)
805  vlib_buffer_free (vm, &bi0, 1);
806  }
807  return err;
808 }
809 
812  u32 table_id, ip6_address_t * pa6,
813  u32 sw_if_index, u16 seq_host, u16 id_host, u16 data_len,
814  u32 burst, u8 verbose)
815 {
816  ip46_address_t target;
817  target.ip6 = *pa6;
818  return send_ip46_ping (vm, table_id, &target, sw_if_index, seq_host,
819  id_host, data_len, burst, verbose, 1 /* is_ip6 */ );
820 }
821 
824  u32 table_id, ip4_address_t * pa4,
825  u32 sw_if_index, u16 seq_host, u16 id_host, u16 data_len,
826  u32 burst, u8 verbose)
827 {
828  ip46_address_t target;
829  ip46_address_set_ip4 (&target, pa4);
830  return send_ip46_ping (vm, table_id, &target, sw_if_index, seq_host,
831  id_host, data_len, burst, verbose, 0 /* is_ip6 */ );
832 }
833 
834 static void
836 {
837  vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
838  int l4_offset;
839  void *paddr;
840  void *format_addr_func;
841  u16 payload_length;
842  u8 ttl;
843  if (is_ip6)
844  {
846  paddr = (void *) &ip6->src_address;
847  format_addr_func = (void *) format_ip6_address;
848  ttl = ip6->hop_limit;
849  l4_offset = sizeof (ip6_header_t); // FIXME - EH processing ?
850  payload_length = clib_net_to_host_u16 (ip6->payload_length);
851  }
852  else
853  {
855  paddr = (void *) &ip4->src_address;
856  format_addr_func = (void *) format_ip4_address;
857  ttl = ip4->ttl;
858  l4_offset = ip4_header_bytes (ip4);
859  payload_length =
860  clib_net_to_host_u16 (ip4->length) + ip4_header_bytes (ip4);
861  }
862  icmp46_header_t *icmp = vlib_buffer_get_current (b0) + l4_offset;
863  icmp46_echo_request_t *icmp_echo = (icmp46_echo_request_t *) (icmp + 1);
864  u64 *dataplane_ts = (u64 *) & vnet_buffer (b0)->unused[0];
865 
866  f64 clocks_per_second = ((f64) vm->clib_time.clocks_per_second);
867  f64 rtt =
868  ((f64) (*dataplane_ts - icmp_echo->time_sent)) / clocks_per_second;
869 
870  vlib_cli_output (vm,
871  "%d bytes from %U: icmp_seq=%d ttl=%d time=%.4f ms",
872  payload_length,
873  format_addr_func,
874  paddr,
875  clib_host_to_net_u16 (icmp_echo->seq), ttl, rtt * 1000.0);
876 }
877 
878 /*
879  * Perform the ping run with the given parameters in the current CLI process.
880  * Depending on whether pa4 or pa6 is set, runs IPv4 or IPv6 ping.
881  * The amusing side effect is of course if both are set, then both pings are sent.
882  * This behavior can be used to ping a dualstack host over IPv4 and IPv6 at once.
883  */
884 
885 static void
888  f64 ping_interval, u32 ping_repeat, u32 data_len,
889  u32 ping_burst, u32 verbose)
890 {
891  int i;
892  uword curr_proc = vlib_current_process (vm);
893  u32 n_replies = 0;
894  u32 n_requests = 0;
895  u16 icmp_id;
896 
897  static u32 rand_seed = 0;
898 
899  if (PREDICT_FALSE (!rand_seed))
900  rand_seed = random_default_seed ();
901 
902  icmp_id = random_u32 (&rand_seed) & 0xffff;
903 
904  while (~0 != get_cli_process_id_by_icmp_id_mt (vm, icmp_id))
905  {
906  vlib_cli_output (vm, "ICMP ID collision at %d, incrementing", icmp_id);
907  icmp_id++;
908  }
909 
910  set_cli_process_id_by_icmp_id_mt (vm, icmp_id, curr_proc);
911 
912  for (i = 1; i <= ping_repeat; i++)
913  {
914  send_ip46_ping_result_t res = SEND_PING_OK;
915  f64 sleep_interval;
916  f64 time_ping_sent = vlib_time_now (vm);
917  if (pa6)
918  {
919  res = send_ip6_ping (vm, table_id,
920  pa6, sw_if_index, i, icmp_id,
921  data_len, ping_burst, verbose);
922  if (SEND_PING_OK == res)
923  n_requests += ping_burst;
924  else
925  vlib_cli_output (vm, "Failed: %U", format_ip46_ping_result, res);
926  }
927  if (pa4)
928  {
929  res = send_ip4_ping (vm, table_id, pa4,
930  sw_if_index, i, icmp_id, data_len,
931  ping_burst, verbose);
932  if (SEND_PING_OK == res)
933  n_requests += ping_burst;
934  else
935  vlib_cli_output (vm, "Failed: %U", format_ip46_ping_result, res);
936  }
937 
938  /* Collect and print the responses until it is time to send a next ping */
939 
940  while ((i <= ping_repeat)
941  &&
942  ((sleep_interval =
943  time_ping_sent + ping_interval - vlib_time_now (vm)) > 0.0))
944  {
945  uword event_type, *event_data = 0;
946  vlib_process_wait_for_event_or_clock (vm, sleep_interval);
947  event_type = vlib_process_get_events (vm, &event_data);
948  switch (event_type)
949  {
950  case ~0: /* no events => timeout */
951  break;
952  case PING_RESPONSE_IP6:
953  /* fall-through */
954  case PING_RESPONSE_IP4:
955  {
956  int ii;
957  int is_ip6 = (event_type == PING_RESPONSE_IP6);
958  for (ii = 0; ii < vec_len (event_data); ii++)
959  {
960  u32 bi0 = event_data[ii];
961  print_ip46_icmp_reply (vm, bi0, is_ip6);
962  n_replies++;
963  if (0 != bi0)
964  vlib_buffer_free (vm, &bi0, 1);
965  }
966  }
967  break;
968  default:
969  /* someone pressed a key, abort */
970  vlib_cli_output (vm, "Aborted due to a keypress.");
971  goto double_break;
972  break;
973  }
974  vec_free (event_data);
975  }
976  }
977 double_break:
978  vlib_cli_output (vm, "\n");
979  {
980  float loss =
981  (0 ==
982  n_requests) ? 0 : 100.0 * ((float) n_requests -
983  (float) n_replies) / (float) n_requests;
984  vlib_cli_output (vm,
985  "Statistics: %u sent, %u received, %f%% packet loss\n",
986  n_requests, n_replies, loss);
988  }
989 }
990 
991 
992 
993 static clib_error_t *
995  unformat_input_t * input, vlib_cli_command_t * cmd)
996 {
997  ip4_address_t a4;
998  ip6_address_t a6;
999  clib_error_t *error = 0;
1000  u32 ping_repeat = 5;
1001  u32 ping_burst = 1;
1002  u8 ping_ip4, ping_ip6;
1003  vnet_main_t *vnm = vnet_get_main ();
1004  u32 data_len = PING_DEFAULT_DATA_LEN;
1005  u32 verbose = 0;
1006  f64 ping_interval = PING_DEFAULT_INTERVAL;
1007  u32 sw_if_index, table_id;
1008 
1009  table_id = 0;
1010  ping_ip4 = ping_ip6 = 0;
1011  sw_if_index = ~0;
1012 
1013  if (unformat (input, "%U", unformat_ip4_address, &a4))
1014  {
1015  ping_ip4 = 1;
1016  }
1017  else if (unformat (input, "%U", unformat_ip6_address, &a6))
1018  {
1019  ping_ip6 = 1;
1020  }
1021  else if (unformat (input, "ipv4"))
1022  {
1023  if (unformat (input, "%U", unformat_ip4_address, &a4))
1024  {
1025  ping_ip4 = 1;
1026  }
1027  else
1028  {
1029  error =
1030  clib_error_return (0,
1031  "expecting IPv4 address but got `%U'",
1032  format_unformat_error, input);
1033  }
1034  }
1035  else if (unformat (input, "ipv6"))
1036  {
1037  if (unformat (input, "%U", unformat_ip6_address, &a6))
1038  {
1039  ping_ip6 = 1;
1040  }
1041  else
1042  {
1043  error =
1044  clib_error_return (0,
1045  "expecting IPv6 address but got `%U'",
1046  format_unformat_error, input);
1047  }
1048  }
1049  else
1050  {
1051  error =
1052  clib_error_return (0,
1053  "expecting IP4/IP6 address `%U'. Usage: ping <addr> [source <intf>] [size <datasz>] [repeat <count>] [verbose]",
1054  format_unformat_error, input);
1055  goto done;
1056  }
1057 
1058  /* allow for the second AF in the same ping */
1059  if (!ping_ip4 && (unformat (input, "ipv4")))
1060  {
1061  if (unformat (input, "%U", unformat_ip4_address, &a4))
1062  {
1063  ping_ip4 = 1;
1064  }
1065  }
1066  else if (!ping_ip6 && (unformat (input, "ipv6")))
1067  {
1068  if (unformat (input, "%U", unformat_ip6_address, &a6))
1069  {
1070  ping_ip6 = 1;
1071  }
1072  }
1073 
1074  /* parse the rest of the parameters in a cycle */
1075  while (!unformat_eof (input, NULL))
1076  {
1077  if (unformat (input, "source"))
1078  {
1079  if (!unformat_user
1080  (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
1081  {
1082  error =
1083  clib_error_return (0,
1084  "unknown interface `%U'",
1085  format_unformat_error, input);
1086  goto done;
1087  }
1088  }
1089  else if (unformat (input, "size"))
1090  {
1091  if (!unformat (input, "%u", &data_len))
1092  {
1093  error =
1094  clib_error_return (0,
1095  "expecting size but got `%U'",
1096  format_unformat_error, input);
1097  goto done;
1098  }
1099  if (data_len > PING_MAXIMUM_DATA_SIZE)
1100  {
1101  error =
1102  clib_error_return (0,
1103  "%d is bigger than maximum allowed payload size %d",
1104  data_len, PING_MAXIMUM_DATA_SIZE);
1105  goto done;
1106  }
1107  }
1108  else if (unformat (input, "table-id"))
1109  {
1110  if (!unformat (input, "%u", &table_id))
1111  {
1112  error =
1113  clib_error_return (0,
1114  "expecting table-id but got `%U'",
1115  format_unformat_error, input);
1116  goto done;
1117  }
1118  }
1119  else if (unformat (input, "interval"))
1120  {
1121  if (!unformat (input, "%f", &ping_interval))
1122  {
1123  error =
1124  clib_error_return (0,
1125  "expecting interval (floating point number) got `%U'",
1126  format_unformat_error, input);
1127  goto done;
1128  }
1129  }
1130  else if (unformat (input, "repeat"))
1131  {
1132  if (!unformat (input, "%u", &ping_repeat))
1133  {
1134  error =
1135  clib_error_return (0,
1136  "expecting repeat count but got `%U'",
1137  format_unformat_error, input);
1138  goto done;
1139  }
1140  }
1141  else if (unformat (input, "burst"))
1142  {
1143  if (!unformat (input, "%u", &ping_burst))
1144  {
1145  error =
1146  clib_error_return (0,
1147  "expecting burst count but got `%U'",
1148  format_unformat_error, input);
1149  goto done;
1150  }
1151  }
1152  else if (unformat (input, "verbose"))
1153  {
1154  verbose = 1;
1155  }
1156  else
1157  {
1158  error = clib_error_return (0, "unknown input `%U'",
1159  format_unformat_error, input);
1160  goto done;
1161  }
1162  }
1163 
1164 /*
1165  * Operationally, one won't (and shouldn't) need to send more than a frame worth of pings.
1166  * But it may be handy during the debugging.
1167  */
1168 
1169 #ifdef CLIB_DEBUG
1170 #define MAX_PING_BURST (10*VLIB_FRAME_SIZE)
1171 #else
1172 #define MAX_PING_BURST (VLIB_FRAME_SIZE)
1173 #endif
1174 
1175  if (ping_burst < 1 || ping_burst > MAX_PING_BURST)
1176  return clib_error_return (0, "burst size must be between 1 and %u",
1177  MAX_PING_BURST);
1178 
1179  run_ping_ip46_address (vm, table_id, ping_ip4 ? &a4 : NULL,
1180  ping_ip6 ? &a6 : NULL, sw_if_index, ping_interval,
1181  ping_repeat, data_len, ping_burst, verbose);
1182 done:
1183  return error;
1184 }
1185 
1186 /*?
1187  * This command sends an ICMP ECHO_REQUEST to network hosts. The address
1188  * can be an IPv4 or IPv6 address (or both at the same time).
1189  *
1190  * @cliexpar
1191  * @parblock
1192  * Example of how ping an IPv4 address:
1193  * @cliexstart{ping 172.16.1.2 source GigabitEthernet2/0/0 repeat 2}
1194  * 64 bytes from 172.16.1.2: icmp_seq=1 ttl=64 time=.1090 ms
1195  * 64 bytes from 172.16.1.2: icmp_seq=2 ttl=64 time=.0914 ms
1196  *
1197  * Statistics: 2 sent, 2 received, 0% packet loss
1198  * @cliexend
1199  *
1200  * Example of how ping both an IPv4 address and IPv6 address at the same time:
1201  * @cliexstart{ping 172.16.1.2 ipv6 fe80::24a5:f6ff:fe9c:3a36 source GigabitEthernet2/0/0 repeat 2 verbose}
1202  * Adjacency index: 10, sw_if_index: 1
1203  * Adj: ip6-discover-neighbor
1204  * Adj Interface: 0
1205  * Forced set interface: 1
1206  * Adjacency index: 0, sw_if_index: 4294967295
1207  * Adj: ip4-miss
1208  * Adj Interface: 0
1209  * Forced set interface: 1
1210  * Source address: 172.16.1.1
1211  * 64 bytes from 172.16.1.2: icmp_seq=1 ttl=64 time=.1899 ms
1212  * Adjacency index: 10, sw_if_index: 1
1213  * Adj: ip6-discover-neighbor
1214  * Adj Interface: 0
1215  * Forced set interface: 1
1216  * Adjacency index: 0, sw_if_index: 4294967295
1217  * Adj: ip4-miss
1218  * Adj Interface: 0
1219  * Forced set interface: 1
1220  * Source address: 172.16.1.1
1221  * 64 bytes from 172.16.1.2: icmp_seq=2 ttl=64 time=.0910 ms
1222  *
1223  * Statistics: 4 sent, 2 received, 50% packet loss
1224  * @cliexend
1225  * @endparblock
1226 ?*/
1227 /* *INDENT-OFF* */
1228 VLIB_CLI_COMMAND (ping_command, static) =
1229 {
1230  .path = "ping",
1231  .function = ping_ip_address,
1232  .short_help = "ping {<ip-addr> | ipv4 <ip4-addr> | ipv6 <ip6-addr>}"
1233  " [ipv4 <ip4-addr> | ipv6 <ip6-addr>] [source <interface>]"
1234  " [size <pktsize>] [interval <sec>] [repeat <cnt>] [table-id <id>]"
1235  " [verbose]",
1236  .is_mp_safe = 1,
1237 };
1238 /* *INDENT-ON* */
1239 
1240 static clib_error_t *
1242 {
1244  ping_main_t *pm = &ping_main;
1245 
1246  pm->ip6_main = &ip6_main;
1247  pm->ip4_main = &ip4_main;
1248  icmp6_register_type (vm, ICMP6_echo_reply, ip6_icmp_echo_reply_node.index);
1249  ip4_icmp_register_type (vm, ICMP4_echo_reply,
1250  ip4_icmp_echo_reply_node.index);
1251  if (tm->n_vlib_mains > 1)
1253  return 0;
1254 }
1255 
1257 
1258 /*
1259  * fd.io coding-style-patch-verification: ON
1260  *
1261  * Local Variables:
1262  * eval: (c-set-style "gnu")
1263  * End:
1264  */
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:529
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:47
static uword vlib_current_process(vlib_main_t *vm)
Definition: node_funcs.h:400
unformat_function_t unformat_eof
Definition: format.h:292
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:232
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:98
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
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:525
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:983
ip_lookup_main_t lookup_main
Definition: ip4.h:98
uword ip_csum_t
Definition: ip_packet.h:181
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
u16 flags_and_fragment_offset
Definition: ip4_packet.h:151
unformat_function_t unformat_vnet_sw_interface
clib_time_t clib_time
Definition: main.h:65
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:378
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:685
static void print_ip46_icmp_reply(vlib_main_t *vm, u32 bi0, int is_ip6)
Definition: ping.c:835
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:103
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
i16 current_data
signed offset in data[], pre_data[] that we are currently processing.
Definition: buffer.h:110
#define static_always_inline
Definition: clib.h:99
unformat_function_t unformat_ip4_address
Definition: format.h:70
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
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
u32 sw_if_index
Definition: vxlan_gbp.api:37
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:181
#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:401
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:158
static u8 * format_ip46_ping_result(u8 *s, va_list *args)
Definition: ping.c:67
#define fl(x, y)
static void clib_spinlock_init(clib_spinlock_t *p)
Definition: lock.h:57
void ip4_icmp_register_type(vlib_main_t *vm, icmp4_type_t type, u32 node_index)
Definition: icmp4.c:739
static clib_error_t * ping_cli_init(vlib_main_t *vm)
Definition: ping.c:1241
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:114
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:190
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:214
#define VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX
Definition: buffer.h:442
#define PREDICT_FALSE(x)
Definition: clib.h:111
#define vec_del1(v, i)
Delete the element at index I.
Definition: vec.h:808
#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:1451
unformat_function_t unformat_ip6_address
Definition: format.h:91
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:307
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169
#define PING_DEFAULT_INTERVAL
Definition: ping.h:66
u16 n_vectors
Definition: node.h:420
format_function_t format_ip6_address
Definition: format.h:93
vlib_main_t * vm
Definition: buffer.c:301
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
static ip_csum_t ip_incremental_checksum(ip_csum_t sum, void *_data, uword n_bytes)
Definition: ip_packet.h:254
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:823
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:452
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:886
#define VLIB_BUFFER_DATA_SIZE
Definition: buffer.h:51
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:944
vlib_node_registration_t ip6_lookup_node
(constructor) VLIB_REGISTER_NODE (ip6_lookup_node)
Definition: ip6_forward.c:546
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:537
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:2624
ip_lookup_main_t lookup_main
Definition: ip6.h:178
#define PING_MAXIMUM_DATA_SIZE
Definition: ping.h:68
#define ip46_address_set_ip4(ip46, ip)
Definition: ip6_packet.h:90
IPv4 main type.
Definition: ip4.h:96
u32 next_buffer
Next buffer for this linked-list of buffers.
Definition: buffer.h:130
size_t count
Definition: vapi.c:47
#define PING_CLI_UNKNOWN_NODE
Definition: ping.h:70
static u32 vlib_buffer_alloc_from_free_list(vlib_main_t *vm, u32 *buffers, u32 n_buffers, vlib_buffer_free_list_index_t index)
Allocate buffers from specific freelist into supplied array.
Definition: buffer_funcs.h:426
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:57
u32 total_length_not_including_first_buffer
Only valid for first buffer in chain.
Definition: buffer.h:156
template key/value backing page structure
Definition: bihash_doc.h:44
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:365
Definition: defs.h:47
u16 payload_length
Definition: ip6_packet.h:369
void icmp6_register_type(vlib_main_t *vm, icmp6_type_t type, u32 node_index)
Definition: icmp6.c:753
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
#define ERROR_OUT(e)
Definition: ping.c:735
u32 cli_process_node
Definition: ping.c:38
#define STATIC_ASSERT(truth,...)
#define VLIB_BUFFER_TRACE_TRAJECTORY_INIT(b)
Definition: buffer.h:495
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
static void vlib_buffer_init_for_free_list(vlib_buffer_t *dst, vlib_buffer_free_list_t *fl)
#define vnet_buffer(b)
Definition: buffer.h:368
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:903
static vlib_thread_main_t * vlib_get_thread_main()
Definition: global_funcs.h:32
u8 data[0]
Packet data.
Definition: buffer.h:176
#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:531
#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
static vlib_buffer_free_list_t * vlib_buffer_get_free_list(vlib_main_t *vm, vlib_buffer_free_list_index_t free_list_index)
Definition: buffer_funcs.h:657
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:326
static clib_error_t * ping_ip_address(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ping.c:994
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:811
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 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:117
static u32 vlib_buffer_alloc(vlib_main_t *vm, u32 *buffers, u32 n_buffers)
Allocate buffers into supplied array.
Definition: buffer_funcs.h:485
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:198
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:762
static_always_inline void clib_spinlock_lock_if_init(clib_spinlock_t *p)
Definition: lock.h:82
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:62
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:237
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
Definition: defs.h:46
ip6_address_t dst_address
Definition: ip6_packet.h:378
vlib_buffer_free_list_index_t free_list_index
Definition: buffer.h:160