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:
7 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 #include <vlib/vlib.h>
19 #include <vlib/unix/unix.h>
20 #include <vnet/fib/ip6_fib.h>
21 #include <vnet/fib/ip4_fib.h>
22 #include <vnet/ip/ip_sas.h>
23 #include <vnet/ip/ip6_link.h>
24 #include <vnet/ip/ip6_ll_table.h>
25 #include <vnet/plugin/plugin.h>
26 #include <vpp/app/version.h>
28 #include <vnet/ip/icmp4.h>
29 #include <ping/ping.h>
31 ping_main_t ping_main;
35 * @brief IPv4 and IPv6 ICMP Ping.
37 * This file contains code to support IPv4 or IPv6 ICMP ECHO_REQUEST to
52 format_icmp_echo_trace (u8 * s, va_list * va)
54 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
55 CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
56 icmp_echo_trace_t *t = va_arg (*va, icmp_echo_trace_t *);
59 format (s, "ICMP%s echo id %d seq %d", t->is_ip6 ? "6" : "4", t->id,
61 if (t->cli_process_node == PING_CLI_UNKNOWN_NODE)
63 s = format (s, " (unknown)");
67 s = format (s, " send to cli node %d", t->cli_process_node);
75 format_ip46_ping_result (u8 * s, va_list * args)
77 send_ip46_ping_result_t res = va_arg (*args, send_ip46_ping_result_t);
81 #define _(v, n) case SEND_PING_##v: s = format(s, "%s", n);break;
82 foreach_ip46_ping_result
91 * Poor man's get-set-clear functions
92 * for manipulation of icmp_id -> cli_process_id
95 * There should normally be very few (0..1..2) of these
96 * mappings, so the linear search is a good strategy.
98 * Make them thread-safe via a simple spinlock.
102 static_always_inline int
103 ip46_get_icmp_id_and_seq (vlib_main_t * vm, vlib_buffer_t * b0,
104 u16 * out_icmp_id, u16 * out_icmp_seq, int is_ip6)
109 ip6_header_t *ip6 = vlib_buffer_get_current (b0);
110 if (ip6->protocol != IP_PROTOCOL_ICMP6)
114 l4_offset = sizeof (*ip6); // IPv6 EH
118 ip4_header_t *ip4 = vlib_buffer_get_current (b0);
119 l4_offset = ip4_header_bytes (ip4);
122 icmp46_header_t *icmp46 = vlib_buffer_get_current (b0) + l4_offset;
123 icmp46_echo_request_t *icmp46_echo = (icmp46_echo_request_t *) (icmp46 + 1);
125 *out_icmp_id = clib_net_to_host_u16 (icmp46_echo->id);
126 *out_icmp_seq = clib_net_to_host_u16 (icmp46_echo->seq);
131 * post the buffer to a given cli process node - the caller should forget bi0 after return.
134 static_always_inline void
135 ip46_post_icmp_reply_event (vlib_main_t * vm, uword cli_process_id, u32 bi0,
138 vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
139 u64 nowts = clib_cpu_time_now ();
141 /* Pass the timestamp to the cli_process thanks to the vnet_buffer unused metadata field */
143 /* Camping on unused data... just ensure statically that there is enough space */
144 STATIC_ASSERT (ARRAY_LEN (vnet_buffer (b0)->unused) *
145 sizeof (vnet_buffer (b0)->unused[0]) > sizeof (nowts),
146 "ping reply timestamp fits within remaining space of vnet_buffer unused data");
147 u64 *pnowts = (void *) &vnet_buffer (b0)->unused[0];
150 u32 event_id = is_ip6 ? PING_RESPONSE_IP6 : PING_RESPONSE_IP4;
151 vlib_process_signal_event_mt (vm, cli_process_id, event_id, bi0);
155 static_always_inline void
156 ip46_echo_reply_maybe_trace_buffer (vlib_main_t * vm,
157 vlib_node_runtime_t * node,
158 uword cli_process_id, u16 id, u16 seq,
159 vlib_buffer_t * b0, int is_ip6)
161 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
163 icmp_echo_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
166 tr->cli_process_node = cli_process_id;
172 static_always_inline uword
173 ip46_icmp_echo_reply_inner_node_fn (vlib_main_t * vm,
174 vlib_node_runtime_t * node,
175 vlib_frame_t * frame, int do_trace,
178 u32 n_left_from, *from, *to_next;
179 icmp46_echo_reply_next_t next_index;
181 from = vlib_frame_vector_args (frame);
182 n_left_from = frame->n_vectors;
184 next_index = node->cached_next_index;
186 while (n_left_from > 0)
189 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
191 while (n_left_from > 0 && n_left_to_next > 0)
196 * The buffers (replies) are either posted to the CLI thread
197 * awaiting for them for subsequent analysis and disposal,
198 * or are sent to the punt node.
200 * So the only "next" node is a punt, normally.
202 u32 next0 = ICMP46_ECHO_REPLY_NEXT_PUNT;
205 b0 = vlib_get_buffer (vm, bi0);
211 uword cli_process_id = PING_CLI_UNKNOWN_NODE;
213 if (ip46_get_icmp_id_and_seq (vm, b0, &icmp_id, &icmp_seq, is_ip6))
215 cli_process_id = get_cli_process_id_by_icmp_id_mt (vm, icmp_id);
219 ip46_echo_reply_maybe_trace_buffer (vm, node, cli_process_id,
220 icmp_id, icmp_seq, b0,
223 if (~0 == cli_process_id)
225 /* no outstanding requests for this reply, punt */
226 /* speculatively enqueue b0 to the current next frame */
230 /* verify speculative enqueue, maybe switch current next frame */
231 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
232 to_next, n_left_to_next,
237 /* Post the buffer to CLI thread. It will take care of freeing it. */
238 ip46_post_icmp_reply_event (vm, cli_process_id, bi0, is_ip6);
241 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
243 return frame->n_vectors;
247 * select "with-trace" or "without-trace" codepaths upfront.
249 static_always_inline uword
250 ip46_icmp_echo_reply_outer_node_fn (vlib_main_t * vm,
251 vlib_node_runtime_t * node,
252 vlib_frame_t * frame, int is_ip6)
254 if (node->flags & VLIB_NODE_FLAG_TRACE)
255 return ip46_icmp_echo_reply_inner_node_fn (vm, node, frame,
256 1 /* do_trace */ , is_ip6);
258 return ip46_icmp_echo_reply_inner_node_fn (vm, node, frame,
259 0 /* do_trace */ , is_ip6);
263 ip4_icmp_echo_reply_node_fn (vlib_main_t * vm,
264 vlib_node_runtime_t * node, vlib_frame_t * frame)
266 return ip46_icmp_echo_reply_outer_node_fn (vm, node, frame,
271 ip6_icmp_echo_reply_node_fn (vlib_main_t * vm,
272 vlib_node_runtime_t * node, vlib_frame_t * frame)
274 return ip46_icmp_echo_reply_outer_node_fn (vm, node, frame,
279 VLIB_REGISTER_NODE (ip6_icmp_echo_reply_node, static) =
281 .function = ip6_icmp_echo_reply_node_fn,
282 .name = "ip6-icmp-echo-reply",
283 .vector_size = sizeof (u32),
284 .format_trace = format_icmp_echo_trace,
285 .n_next_nodes = ICMP46_ECHO_REPLY_N_NEXT,
287 [ICMP46_ECHO_REPLY_NEXT_DROP] = "ip6-drop",
288 [ICMP46_ECHO_REPLY_NEXT_PUNT] = "ip6-punt",
292 VLIB_REGISTER_NODE (ip4_icmp_echo_reply_node, static) =
294 .function = ip4_icmp_echo_reply_node_fn,
295 .name = "ip4-icmp-echo-reply",
296 .vector_size = sizeof (u32),
297 .format_trace = format_icmp_echo_trace,
298 .n_next_nodes = ICMP46_ECHO_REPLY_N_NEXT,
300 [ICMP46_ECHO_REPLY_NEXT_DROP] = "ip4-drop",
301 [ICMP46_ECHO_REPLY_NEXT_PUNT] = "ip4-punt",
307 ip4_icmp_echo_request (vlib_main_t * vm,
308 vlib_node_runtime_t * node, vlib_frame_t * frame)
310 uword n_packets = frame->n_vectors;
312 u32 n_left_from, n_left_to_next, next;
313 ip4_main_t *i4m = &ip4_main;
314 u16 *fragment_ids, *fid;
315 u8 host_config_ttl = i4m->host_config.ttl;
317 from = vlib_frame_vector_args (frame);
318 n_left_from = n_packets;
319 next = node->cached_next_index;
321 if (node->flags & VLIB_NODE_FLAG_TRACE)
322 vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
324 sizeof (icmp_input_trace_t));
326 /* Get random fragment IDs for replies. */
327 fid = fragment_ids = clib_random_buffer_get_data (&vm->random_buffer,
329 sizeof (fragment_ids[0]));
331 while (n_left_from > 0)
333 vlib_get_next_frame (vm, node, next, to_next, n_left_to_next);
335 while (n_left_from > 2 && n_left_to_next > 2)
337 vlib_buffer_t *p0, *p1;
338 ip4_header_t *ip0, *ip1;
339 icmp46_header_t *icmp0, *icmp1;
342 ip_csum_t sum0, sum1;
344 bi0 = to_next[0] = from[0];
345 bi1 = to_next[1] = from[1];
352 p0 = vlib_get_buffer (vm, bi0);
353 p1 = vlib_get_buffer (vm, bi1);
354 ip0 = vlib_buffer_get_current (p0);
355 ip1 = vlib_buffer_get_current (p1);
356 icmp0 = ip4_next_header (ip0);
357 icmp1 = ip4_next_header (ip1);
359 vnet_buffer (p0)->sw_if_index[VLIB_RX] =
360 vnet_main.local_interface_sw_if_index;
361 vnet_buffer (p1)->sw_if_index[VLIB_RX] =
362 vnet_main.local_interface_sw_if_index;
364 /* Update ICMP checksum. */
365 sum0 = icmp0->checksum;
366 sum1 = icmp1->checksum;
368 ASSERT (icmp0->type == ICMP4_echo_request);
369 ASSERT (icmp1->type == ICMP4_echo_request);
370 sum0 = ip_csum_update (sum0, ICMP4_echo_request, ICMP4_echo_reply,
371 icmp46_header_t, type);
372 sum1 = ip_csum_update (sum1, ICMP4_echo_request, ICMP4_echo_reply,
373 icmp46_header_t, type);
374 icmp0->type = ICMP4_echo_reply;
375 icmp1->type = ICMP4_echo_reply;
377 icmp0->checksum = ip_csum_fold (sum0);
378 icmp1->checksum = ip_csum_fold (sum1);
380 src0 = ip0->src_address.data_u32;
381 src1 = ip1->src_address.data_u32;
382 dst0 = ip0->dst_address.data_u32;
383 dst1 = ip1->dst_address.data_u32;
385 /* Swap source and destination address.
386 Does not change checksum. */
387 ip0->src_address.data_u32 = dst0;
388 ip1->src_address.data_u32 = dst1;
389 ip0->dst_address.data_u32 = src0;
390 ip1->dst_address.data_u32 = src1;
392 /* Update IP checksum. */
393 sum0 = ip0->checksum;
394 sum1 = ip1->checksum;
396 sum0 = ip_csum_update (sum0, ip0->ttl, host_config_ttl,
398 sum1 = ip_csum_update (sum1, ip1->ttl, host_config_ttl,
400 ip0->ttl = host_config_ttl;
401 ip1->ttl = host_config_ttl;
403 /* New fragment id. */
404 sum0 = ip_csum_update (sum0, ip0->fragment_id, fid[0],
405 ip4_header_t, fragment_id);
406 sum1 = ip_csum_update (sum1, ip1->fragment_id, fid[1],
407 ip4_header_t, fragment_id);
408 ip0->fragment_id = fid[0];
409 ip1->fragment_id = fid[1];
412 ip0->checksum = ip_csum_fold (sum0);
413 ip1->checksum = ip_csum_fold (sum1);
415 ASSERT (ip4_header_checksum_is_valid (ip0));
416 ASSERT (ip4_header_checksum_is_valid (ip1));
418 p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
419 p1->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
422 while (n_left_from > 0 && n_left_to_next > 0)
426 icmp46_header_t *icmp0;
430 bi0 = to_next[0] = from[0];
437 p0 = vlib_get_buffer (vm, bi0);
438 ip0 = vlib_buffer_get_current (p0);
439 icmp0 = ip4_next_header (ip0);
441 vnet_buffer (p0)->sw_if_index[VLIB_RX] =
442 vnet_main.local_interface_sw_if_index;
444 /* Update ICMP checksum. */
445 sum0 = icmp0->checksum;
447 ASSERT (icmp0->type == ICMP4_echo_request);
448 sum0 = ip_csum_update (sum0, ICMP4_echo_request, ICMP4_echo_reply,
449 icmp46_header_t, type);
450 icmp0->type = ICMP4_echo_reply;
451 icmp0->checksum = ip_csum_fold (sum0);
453 src0 = ip0->src_address.data_u32;
454 dst0 = ip0->dst_address.data_u32;
455 ip0->src_address.data_u32 = dst0;
456 ip0->dst_address.data_u32 = src0;
458 /* Update IP checksum. */
459 sum0 = ip0->checksum;
461 sum0 = ip_csum_update (sum0, ip0->ttl, host_config_ttl,
463 ip0->ttl = host_config_ttl;
465 sum0 = ip_csum_update (sum0, ip0->fragment_id, fid[0],
466 ip4_header_t, fragment_id);
467 ip0->fragment_id = fid[0];
470 ip0->checksum = ip_csum_fold (sum0);
472 ASSERT (ip4_header_checksum_is_valid (ip0));
474 p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
477 vlib_put_next_frame (vm, node, next, n_left_to_next);
480 vlib_error_count (vm, ip4_icmp_input_node.index,
481 ICMP4_ERROR_ECHO_REPLIES_SENT, frame->n_vectors);
483 return frame->n_vectors;
487 format_icmp_input_trace (u8 * s, va_list * va)
489 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
490 CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
491 icmp_input_trace_t *t = va_arg (*va, icmp_input_trace_t *);
494 format_ip4_header, t->packet_data, sizeof (t->packet_data));
500 VLIB_REGISTER_NODE (ip4_icmp_echo_request_node,static) = {
501 .function = ip4_icmp_echo_request,
502 .name = "ip4-icmp-echo-request",
504 .vector_size = sizeof (u32),
506 .format_trace = format_icmp_input_trace,
510 [0] = "ip4-load-balance",
517 ICMP6_ECHO_REQUEST_NEXT_LOOKUP,
518 ICMP6_ECHO_REQUEST_NEXT_OUTPUT,
519 ICMP6_ECHO_REQUEST_N_NEXT,
520 } icmp6_echo_request_next_t;
523 ip6_icmp_echo_request (vlib_main_t *vm, vlib_node_runtime_t *node,
527 u32 n_left_from, n_left_to_next, next_index;
528 ip6_main_t *im = &ip6_main;
530 from = vlib_frame_vector_args (frame);
531 n_left_from = frame->n_vectors;
532 next_index = node->cached_next_index;
534 if (node->flags & VLIB_NODE_FLAG_TRACE)
535 vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
537 sizeof (icmp6_input_trace_t));
539 while (n_left_from > 0)
541 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
543 while (n_left_from > 2 && n_left_to_next > 2)
545 vlib_buffer_t *p0, *p1;
546 ip6_header_t *ip0, *ip1;
547 icmp46_header_t *icmp0, *icmp1;
548 ip6_address_t tmp0, tmp1;
549 ip_csum_t sum0, sum1;
551 u32 fib_index0, fib_index1;
552 u32 next0 = ICMP6_ECHO_REQUEST_NEXT_LOOKUP;
553 u32 next1 = ICMP6_ECHO_REQUEST_NEXT_LOOKUP;
555 bi0 = to_next[0] = from[0];
556 bi1 = to_next[1] = from[1];
563 p0 = vlib_get_buffer (vm, bi0);
564 p1 = vlib_get_buffer (vm, bi1);
565 ip0 = vlib_buffer_get_current (p0);
566 ip1 = vlib_buffer_get_current (p1);
567 icmp0 = ip6_next_header (ip0);
568 icmp1 = ip6_next_header (ip1);
570 /* Check icmp type to echo reply and update icmp checksum. */
571 sum0 = icmp0->checksum;
572 sum1 = icmp1->checksum;
574 ASSERT (icmp0->type == ICMP6_echo_request);
575 ASSERT (icmp1->type == ICMP6_echo_request);
576 sum0 = ip_csum_update (sum0, ICMP6_echo_request, ICMP6_echo_reply,
577 icmp46_header_t, type);
578 sum1 = ip_csum_update (sum1, ICMP6_echo_request, ICMP6_echo_reply,
579 icmp46_header_t, type);
581 icmp0->checksum = ip_csum_fold (sum0);
582 icmp1->checksum = ip_csum_fold (sum1);
584 icmp0->type = ICMP6_echo_reply;
585 icmp1->type = ICMP6_echo_reply;
587 /* Swap source and destination address. */
588 tmp0 = ip0->src_address;
589 tmp1 = ip1->src_address;
591 ip0->src_address = ip0->dst_address;
592 ip1->src_address = ip1->dst_address;
594 ip0->dst_address = tmp0;
595 ip1->dst_address = tmp1;
598 ip0->hop_limit = im->host_config.ttl;
599 ip1->hop_limit = im->host_config.ttl;
601 if (ip6_address_is_link_local_unicast (&ip0->src_address) &&
602 !ip6_address_is_link_local_unicast (&ip0->dst_address))
604 fib_index0 = vec_elt (im->fib_index_by_sw_if_index,
605 vnet_buffer (p0)->sw_if_index[VLIB_RX]);
606 vnet_buffer (p0)->sw_if_index[VLIB_TX] = fib_index0;
608 if (ip6_address_is_link_local_unicast (&ip1->src_address) &&
609 !ip6_address_is_link_local_unicast (&ip1->dst_address))
611 fib_index1 = vec_elt (im->fib_index_by_sw_if_index,
612 vnet_buffer (p1)->sw_if_index[VLIB_RX]);
613 vnet_buffer (p1)->sw_if_index[VLIB_TX] = fib_index1;
615 p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
616 p1->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
618 /* verify speculative enqueues, maybe switch current next frame */
619 /* if next0==next1==next_index then nothing special needs to be done
621 vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
622 n_left_to_next, bi0, bi1, next0,
626 while (n_left_from > 0 && n_left_to_next > 0)
630 icmp46_header_t *icmp0;
635 u32 next0 = ICMP6_ECHO_REQUEST_NEXT_LOOKUP;
637 bi0 = to_next[0] = from[0];
644 p0 = vlib_get_buffer (vm, bi0);
645 ip0 = vlib_buffer_get_current (p0);
646 icmp0 = ip6_next_header (ip0);
648 /* Check icmp type to echo reply and update icmp checksum. */
649 sum0 = icmp0->checksum;
651 ASSERT (icmp0->type == ICMP6_echo_request);
652 sum0 = ip_csum_update (sum0, ICMP6_echo_request, ICMP6_echo_reply,
653 icmp46_header_t, type);
655 icmp0->checksum = ip_csum_fold (sum0);
657 icmp0->type = ICMP6_echo_reply;
659 /* Swap source and destination address. */
660 tmp0 = ip0->src_address;
661 ip0->src_address = ip0->dst_address;
662 ip0->dst_address = tmp0;
664 ip0->hop_limit = im->host_config.ttl;
666 if (ip6_address_is_link_local_unicast (&ip0->src_address) &&
667 !ip6_address_is_link_local_unicast (&ip0->dst_address))
669 /* if original packet was to the link local, then the
670 * fib index is that of the LL table, we can't use that
671 * to foward the response if the new destination
672 * is global, so reset to the fib index of the link.
673 * In other case, the fib index we need has been written
674 * to the buffer already. */
675 fib_index0 = vec_elt (im->fib_index_by_sw_if_index,
676 vnet_buffer (p0)->sw_if_index[VLIB_RX]);
677 vnet_buffer (p0)->sw_if_index[VLIB_TX] = fib_index0;
679 p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
680 /* Verify speculative enqueue, maybe switch current next frame */
681 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
682 n_left_to_next, bi0, next0);
685 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
688 vlib_error_count (vm, ip6_icmp_input_node.index,
689 ICMP6_ERROR_ECHO_REPLIES_SENT, frame->n_vectors);
691 return frame->n_vectors;
694 VLIB_REGISTER_NODE (ip6_icmp_echo_request_node,static) = {
695 .function = ip6_icmp_echo_request,
696 .name = "ip6-icmp-echo-request",
698 .vector_size = sizeof (u32),
700 .format_trace = format_icmp6_input_trace,
702 .n_next_nodes = ICMP6_ECHO_REQUEST_N_NEXT,
704 [ICMP6_ECHO_REQUEST_NEXT_LOOKUP] = "ip6-lookup",
705 [ICMP6_ECHO_REQUEST_NEXT_OUTPUT] = "interface-output",
710 * A swarm of address-family agnostic helper functions
711 * for building and sending the ICMP echo request.
713 * Deliberately mostly "static" rather than "static inline"
714 * so one can trace them sanely if needed in debugger, if needed.
718 static_always_inline u8
719 get_icmp_echo_payload_byte (int offset)
721 return (offset % 256);
724 /* Fill in the ICMP ECHO structure, return the safety-checked and possibly shrunk data_len */
726 init_icmp46_echo_request (vlib_main_t * vm, vlib_buffer_t * b0,
727 int l4_header_offset,
728 icmp46_echo_request_t * icmp46_echo, u16 seq_host,
729 u16 id_host, u64 now, u16 data_len)
735 l4_header_offset + sizeof (icmp46_header_t) +
736 offsetof (icmp46_echo_request_t, data);
737 int max_data_len = vlib_buffer_get_default_data_size (vm) - l34_len;
739 int first_buf_data_len = data_len < max_data_len ? data_len : max_data_len;
741 int payload_offset = 0;
742 for (i = 0; i < first_buf_data_len; i++)
743 icmp46_echo->data[i] = get_icmp_echo_payload_byte (payload_offset++);
745 /* inspired by vlib_buffer_add_data */
746 vlib_buffer_t *hb = b0;
747 int remaining_data_len = data_len - first_buf_data_len;
748 while (remaining_data_len)
750 int this_buf_data_len =
752 vlib_buffer_get_default_data_size (vm) ? remaining_data_len :
753 vlib_buffer_get_default_data_size (vm);
754 int n_alloc = vlib_buffer_alloc (vm, &b0->next_buffer, 1);
757 /* That is how much we have so far - return it... */
758 return (data_len - remaining_data_len);
760 b0->flags |= VLIB_BUFFER_NEXT_PRESENT;
761 /* move on to the newly acquired buffer */
762 b0 = vlib_get_buffer (vm, b0->next_buffer);
763 /* initialize the data */
764 for (i = 0; i < this_buf_data_len; i++)
766 b0->data[i] = get_icmp_echo_payload_byte (payload_offset++);
768 b0->current_length = this_buf_data_len;
769 b0->current_data = 0;
770 remaining_data_len -= this_buf_data_len;
772 hb->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
773 hb->current_length = l34_len + first_buf_data_len;
774 hb->total_length_not_including_first_buffer = data_len - first_buf_data_len;
776 icmp46_echo->time_sent = now;
777 icmp46_echo->seq = clib_host_to_net_u16 (seq_host);
778 icmp46_echo->id = clib_host_to_net_u16 (id_host);
784 ip46_fib_index_from_table_id (u32 table_id, int is_ip6)
786 u32 fib_index = is_ip6 ?
787 ip6_fib_index_from_table_id (table_id) :
788 ip4_fib_index_from_table_id (table_id);
792 static fib_node_index_t
793 ip46_fib_table_lookup_host (u32 fib_index, ip46_address_t * pa46, int is_ip6)
795 fib_node_index_t fib_entry_index = is_ip6 ?
796 ip6_fib_table_lookup (fib_index, &pa46->ip6, 128) :
797 ip4_fib_table_lookup (ip4_fib_get (fib_index), &pa46->ip4, 32);
798 return fib_entry_index;
802 ip46_get_resolving_interface (u32 fib_index, ip46_address_t * pa46,
805 u32 sw_if_index = ~0;
808 fib_node_index_t fib_entry_index;
809 fib_entry_index = ip46_fib_table_lookup_host (fib_index, pa46, is_ip6);
810 sw_if_index = fib_entry_get_resolving_interface (fib_entry_index);
816 ip46_fib_table_get_index_for_sw_if_index (u32 sw_if_index, int is_ip6,
817 ip46_address_t *pa46)
821 if (ip6_address_is_link_local_unicast (&pa46->ip6))
822 return ip6_ll_fib_get (sw_if_index);
823 return ip6_fib_table_get_index_for_sw_if_index (sw_if_index);
825 return ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
830 ip46_fill_l3_header (ip46_address_t * pa46, vlib_buffer_t * b0, int is_ip6)
834 ip6_header_t *ip6 = vlib_buffer_get_current (b0);
835 /* Fill in ip6 header fields */
836 ip6->ip_version_traffic_class_and_flow_label =
837 clib_host_to_net_u32 (0x6 << 28);
838 ip6->payload_length = 0; /* will be set later */
839 ip6->protocol = IP_PROTOCOL_ICMP6;
840 ip6->hop_limit = 255;
841 ip6->dst_address = pa46->ip6;
842 ip6->src_address = pa46->ip6;
843 return (sizeof (ip6_header_t));
847 ip4_header_t *ip4 = vlib_buffer_get_current (b0);
848 /* Fill in ip4 header fields */
850 ip4->ip_version_and_header_length = 0x45;
852 ip4->length = 0; /* will be set later */
853 ip4->fragment_id = 0;
854 ip4->flags_and_fragment_offset = 0;
856 ip4->protocol = IP_PROTOCOL_ICMP;
857 ip4->src_address = pa46->ip4;
858 ip4->dst_address = pa46->ip4;
859 return (sizeof (ip4_header_t));
864 ip46_set_src_address (u32 sw_if_index, vlib_buffer_t * b0, int is_ip6)
870 ip6_header_t *ip6 = vlib_buffer_get_current (b0);
872 res = ip6_sas_by_sw_if_index (sw_if_index, &ip6->dst_address,
877 ip4_header_t *ip4 = vlib_buffer_get_current (b0);
879 res = ip4_sas_by_sw_if_index (sw_if_index, &ip4->dst_address,
886 ip46_print_buffer_src_address (vlib_main_t * vm, vlib_buffer_t * b0,
889 void *format_addr_func;
893 ip6_header_t *ip6 = vlib_buffer_get_current (b0);
894 format_addr_func = format_ip6_address;
895 paddr = &ip6->src_address;
899 ip4_header_t *ip4 = vlib_buffer_get_current (b0);
900 format_addr_func = format_ip4_address;
901 paddr = &ip4->src_address;
903 vlib_cli_output (vm, "Source address: %U ", format_addr_func, paddr);
907 ip46_fill_icmp_request_at (vlib_main_t * vm, int l4_offset, u16 seq_host,
908 u16 id_host, u16 data_len, vlib_buffer_t * b0,
911 icmp46_header_t *icmp46 = vlib_buffer_get_current (b0) + l4_offset;
913 icmp46->type = is_ip6 ? ICMP6_echo_request : ICMP4_echo_request;
915 icmp46->checksum = 0;
917 icmp46_echo_request_t *icmp46_echo = (icmp46_echo_request_t *) (icmp46 + 1);
920 init_icmp46_echo_request (vm, b0, l4_offset, icmp46_echo, seq_host,
921 id_host, clib_cpu_time_now (), data_len);
926 /* Compute ICMP4 checksum with multibuffer support. */
928 ip4_icmp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0,
932 u32 ip_header_length, payload_length_host_byte_order;
933 u32 n_this_buffer, n_bytes_left, n_ip_bytes_this_buffer;
935 void *data_this_buffer;
937 ip_header_length = ip4_header_bytes (ip0);
938 payload_length_host_byte_order =
939 clib_net_to_host_u16 (ip0->length) - ip_header_length;
941 /* ICMP4 checksum does not include the IP header */
944 n_bytes_left = n_this_buffer = payload_length_host_byte_order;
945 data_this_buffer = (void *) ip0 + ip_header_length;
946 n_ip_bytes_this_buffer =
947 p0->current_length - (((u8 *) ip0 - p0->data) - p0->current_data);
948 if (n_this_buffer + ip_header_length > n_ip_bytes_this_buffer)
950 n_this_buffer = n_ip_bytes_this_buffer > ip_header_length ?
951 n_ip_bytes_this_buffer - ip_header_length : 0;
955 sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer);
956 n_bytes_left -= n_this_buffer;
957 if (n_bytes_left == 0)
960 ASSERT (p0->flags & VLIB_BUFFER_NEXT_PRESENT);
961 p0 = vlib_get_buffer (vm, p0->next_buffer);
962 data_this_buffer = vlib_buffer_get_current (p0);
963 n_this_buffer = p0->current_length;
966 sum16 = ~ip_csum_fold (sum0);
973 ip46_fix_len_and_csum (vlib_main_t * vm, int l4_offset, u16 data_len,
974 vlib_buffer_t * b0, int is_ip6)
977 data_len + sizeof (icmp46_header_t) + offsetof (icmp46_echo_request_t,
979 u16 total_length = payload_length + l4_offset;
980 icmp46_header_t *icmp46 = vlib_buffer_get_current (b0) + l4_offset;
981 icmp46->checksum = 0;
985 ip6_header_t *ip6 = vlib_buffer_get_current (b0);
986 ip6->payload_length = clib_host_to_net_u16 (payload_length);
988 int bogus_length = 0;
990 ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip6, &bogus_length);
994 ip4_header_t *ip4 = vlib_buffer_get_current (b0);
995 ip4->length = clib_host_to_net_u16 (total_length);
997 ip4->checksum = ip4_header_checksum (ip4);
998 icmp46->checksum = ip4_icmp_compute_checksum (vm, b0, ip4);
1003 at_most_a_frame (u32 count)
1005 return count > VLIB_FRAME_SIZE ? VLIB_FRAME_SIZE : count;
1009 ip46_enqueue_packet (vlib_main_t *vm, vlib_buffer_t *b0, u32 burst,
1010 u32 lookup_node_index)
1012 vlib_frame_t *f = 0;
1018 * Enqueue the packet, possibly as one or more frames of copies to make
1019 * bursts. We enqueue b0 as the very last buffer, when there is no possibility
1020 * for error in vlib_buffer_copy, so as to allow the caller to free it
1021 * in case we encounter the error in the middle of the loop.
1023 for (n_to_send = at_most_a_frame (burst), burst -= n_to_send; n_to_send > 0;
1024 n_to_send = at_most_a_frame (burst), burst -= n_to_send)
1026 f = vlib_get_frame_to_node (vm, lookup_node_index);
1027 /* f can not be NULL here - frame allocation failure causes panic */
1029 u32 *to_next = vlib_frame_vector_args (f);
1030 f->n_vectors = n_to_send;
1032 while (n_to_send > 1)
1034 vlib_buffer_t *b0copy = vlib_buffer_copy (vm, b0);
1035 if (PREDICT_FALSE (b0copy == NULL))
1037 *to_next++ = vlib_get_buffer_index (vm, b0copy);
1042 /* n_to_send is guaranteed to equal 1 here */
1045 /* not the last burst, so still make a copy for the last buffer */
1046 vlib_buffer_t *b0copy = vlib_buffer_copy (vm, b0);
1047 if (PREDICT_FALSE (b0copy == NULL))
1050 *to_next++ = vlib_get_buffer_index (vm, b0copy);
1054 /* put the original buffer as the last one of an error-free run */
1055 *to_next++ = vlib_get_buffer_index (vm, b0);
1057 vlib_put_frame_to_node (vm, lookup_node_index, f);
1058 n_sent += f->n_vectors;
1062 * We reach here in case we already enqueued one or more buffers
1063 * and maybe one or more frames but could not make more copies.
1064 * There is an outstanding frame - so ship it and return.
1065 * Caller will have to free the b0 in this case, since
1066 * we did not enqueue it here yet.
1069 ASSERT (n_to_send <= f->n_vectors);
1070 f->n_vectors -= n_to_send;
1071 n_sent += f->n_vectors;
1072 vlib_put_frame_to_node (vm, lookup_node_index, f);
1078 * An address-family agnostic ping send function.
1081 #define ERROR_OUT(e) do { err = e; goto done; } while (0)
1083 static send_ip46_ping_result_t
1084 send_ip46_ping (vlib_main_t * vm,
1086 ip46_address_t * pa46,
1088 u16 seq_host, u16 id_host, u16 data_len, u32 burst,
1089 u8 verbose, int is_ip6)
1091 int err = SEND_PING_OK;
1096 n_buf0 = vlib_buffer_alloc (vm, &bi0, 1);
1098 ERROR_OUT (SEND_PING_ALLOC_FAIL);
1100 b0 = vlib_get_buffer (vm, bi0);
1103 * if the user did not provide a source interface,
1104 * perform a resolution and use an interface
1105 * via which it succeeds.
1108 if (~0 == sw_if_index)
1110 fib_index = ip46_fib_index_from_table_id (table_id, is_ip6);
1111 sw_if_index = ip46_get_resolving_interface (fib_index, pa46, is_ip6);
1115 ip46_fib_table_get_index_for_sw_if_index (sw_if_index, is_ip6, pa46);
1117 if (~0 == fib_index)
1118 ERROR_OUT (SEND_PING_NO_TABLE);
1119 if (~0 == sw_if_index)
1120 ERROR_OUT (SEND_PING_NO_INTERFACE);
1122 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index;
1123 vnet_buffer (b0)->sw_if_index[VLIB_TX] = fib_index;
1125 int l4_header_offset = ip46_fill_l3_header (pa46, b0, is_ip6);
1127 /* set the src address in the buffer */
1128 if (!ip46_set_src_address (sw_if_index, b0, is_ip6))
1129 ERROR_OUT (SEND_PING_NO_SRC_ADDRESS);
1131 ip46_print_buffer_src_address (vm, b0, is_ip6);
1134 ip46_fill_icmp_request_at (vm, l4_header_offset, seq_host, id_host,
1135 data_len, b0, is_ip6);
1137 ip46_fix_len_and_csum (vm, l4_header_offset, data_len, b0, is_ip6);
1139 u32 node_index = ip6_lookup_node.index;
1142 if (pa46->ip6.as_u32[0] == clib_host_to_net_u32 (0xff020000))
1144 node_index = ip6_rewrite_mcast_node.index;
1145 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index;
1146 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index;
1147 vnet_buffer (b0)->ip.adj_index[VLIB_TX] =
1148 ip6_link_get_mcast_adj (sw_if_index);
1153 node_index = ip4_lookup_node.index;
1155 int n_sent = ip46_enqueue_packet (vm, b0, burst, node_index);
1157 err = SEND_PING_NO_BUFFERS;
1160 if (err != SEND_PING_OK)
1163 vlib_buffer_free (vm, &bi0, 1);
1168 send_ip46_ping_result_t
1169 send_ip6_ping (vlib_main_t *vm, u32 table_id, ip6_address_t *pa6,
1170 u32 sw_if_index, u16 seq_host, u16 id_host, u16 data_len,
1171 u32 burst, u8 verbose)
1173 ip46_address_t target;
1175 return send_ip46_ping (vm, table_id, &target, sw_if_index, seq_host,
1176 id_host, data_len, burst, verbose, 1 /* is_ip6 */ );
1179 send_ip46_ping_result_t
1180 send_ip4_ping (vlib_main_t *vm, u32 table_id, ip4_address_t *pa4,
1181 u32 sw_if_index, u16 seq_host, u16 id_host, u16 data_len,
1182 u32 burst, u8 verbose)
1184 ip46_address_t target;
1185 ip46_address_set_ip4 (&target, pa4);
1186 return send_ip46_ping (vm, table_id, &target, sw_if_index, seq_host,
1187 id_host, data_len, burst, verbose, 0 /* is_ip6 */ );
1191 print_ip46_icmp_reply (vlib_main_t * vm, u32 bi0, int is_ip6)
1193 vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
1196 void *format_addr_func;
1201 ip6_header_t *ip6 = vlib_buffer_get_current (b0);
1202 paddr = (void *) &ip6->src_address;
1203 format_addr_func = (void *) format_ip6_address;
1204 ttl = ip6->hop_limit;
1205 l4_offset = sizeof (ip6_header_t); // FIXME - EH processing ?
1206 payload_length = clib_net_to_host_u16 (ip6->payload_length);
1210 ip4_header_t *ip4 = vlib_buffer_get_current (b0);
1211 paddr = (void *) &ip4->src_address;
1212 format_addr_func = (void *) format_ip4_address;
1214 l4_offset = ip4_header_bytes (ip4);
1216 clib_net_to_host_u16 (ip4->length) + ip4_header_bytes (ip4);
1218 icmp46_header_t *icmp = vlib_buffer_get_current (b0) + l4_offset;
1219 icmp46_echo_request_t *icmp_echo = (icmp46_echo_request_t *) (icmp + 1);
1220 u64 *dataplane_ts = (u64 *) & vnet_buffer (b0)->unused[0];
1222 f64 clocks_per_second = ((f64) vm->clib_time.clocks_per_second);
1224 ((f64) (*dataplane_ts - icmp_echo->time_sent)) / clocks_per_second;
1226 vlib_cli_output (vm,
1227 "%d bytes from %U: icmp_seq=%d ttl=%d time=%.4f ms",
1231 clib_host_to_net_u16 (icmp_echo->seq), ttl, rtt * 1000.0);
1235 * Perform the ping run with the given parameters in the current CLI process.
1236 * Depending on whether pa4 or pa6 is set, runs IPv4 or IPv6 ping.
1237 * The amusing side effect is of course if both are set, then both pings are sent.
1238 * This behavior can be used to ping a dualstack host over IPv4 and IPv6 at once.
1242 run_ping_ip46_address (vlib_main_t * vm, u32 table_id, ip4_address_t * pa4,
1243 ip6_address_t * pa6, u32 sw_if_index,
1244 f64 ping_interval, u32 ping_repeat, u32 data_len,
1245 u32 ping_burst, u32 verbose)
1248 uword curr_proc = vlib_current_process (vm);
1253 static u32 rand_seed = 0;
1255 if (PREDICT_FALSE (!rand_seed))
1256 rand_seed = random_default_seed ();
1258 icmp_id = random_u32 (&rand_seed) & 0xffff;
1260 while (~0 != get_cli_process_id_by_icmp_id_mt (vm, icmp_id))
1262 vlib_cli_output (vm, "ICMP ID collision at %d, incrementing", icmp_id);
1266 set_cli_process_id_by_icmp_id_mt (vm, icmp_id, curr_proc);
1268 for (i = 1; i <= ping_repeat; i++)
1270 send_ip46_ping_result_t res = SEND_PING_OK;
1272 f64 time_ping_sent = vlib_time_now (vm);
1275 res = send_ip6_ping (vm, table_id,
1276 pa6, sw_if_index, i, icmp_id,
1277 data_len, ping_burst, verbose);
1278 if (SEND_PING_OK == res)
1279 n_requests += ping_burst;
1281 vlib_cli_output (vm, "Failed: %U", format_ip46_ping_result, res);
1285 res = send_ip4_ping (vm, table_id, pa4,
1286 sw_if_index, i, icmp_id, data_len,
1287 ping_burst, verbose);
1288 if (SEND_PING_OK == res)
1289 n_requests += ping_burst;
1291 vlib_cli_output (vm, "Failed: %U", format_ip46_ping_result, res);
1294 /* Collect and print the responses until it is time to send a next ping */
1296 while ((i <= ping_repeat)
1299 time_ping_sent + ping_interval - vlib_time_now (vm)) > 0.0))
1301 uword event_type, *event_data = 0;
1302 vlib_process_wait_for_event_or_clock (vm, sleep_interval);
1303 event_type = vlib_process_get_events (vm, &event_data);
1306 case ~0: /* no events => timeout */
1308 case PING_RESPONSE_IP6:
1310 case PING_RESPONSE_IP4:
1313 int is_ip6 = (event_type == PING_RESPONSE_IP6);
1314 for (ii = 0; ii < vec_len (event_data); ii++)
1316 u32 bi0 = event_data[ii];
1317 print_ip46_icmp_reply (vm, bi0, is_ip6);
1320 vlib_buffer_free (vm, &bi0, 1);
1324 case UNIX_CLI_PROCESS_EVENT_READ_READY:
1325 case UNIX_CLI_PROCESS_EVENT_QUIT:
1326 /* someone pressed a key, abort */
1327 vlib_cli_output (vm, "Aborted due to a keypress.");
1330 vec_free (event_data);
1334 vlib_cli_output (vm, "\n");
1338 n_requests) ? 0 : 100.0 * ((float) n_requests -
1339 (float) n_replies) / (float) n_requests;
1340 vlib_cli_output (vm,
1341 "Statistics: %u sent, %u received, %f%% packet loss\n",
1342 n_requests, n_replies, loss);
1343 clear_cli_process_id_by_icmp_id_mt (vm, icmp_id);
1349 static clib_error_t *
1350 ping_ip_address (vlib_main_t * vm,
1351 unformat_input_t * input, vlib_cli_command_t * cmd)
1355 clib_error_t *error = 0;
1356 u32 ping_repeat = 5;
1358 u8 ping_ip4, ping_ip6;
1359 vnet_main_t *vnm = vnet_get_main ();
1360 u32 data_len = PING_DEFAULT_DATA_LEN;
1362 f64 ping_interval = PING_DEFAULT_INTERVAL;
1363 u32 sw_if_index, table_id;
1366 ping_ip4 = ping_ip6 = 0;
1369 if (unformat (input, "%U", unformat_ip4_address, &a4))
1373 else if (unformat (input, "%U", unformat_ip6_address, &a6))
1377 else if (unformat (input, "ipv4"))
1379 if (unformat (input, "%U", unformat_ip4_address, &a4))
1386 clib_error_return (0,
1387 "expecting IPv4 address but got `%U'",
1388 format_unformat_error, input);
1391 else if (unformat (input, "ipv6"))
1393 if (unformat (input, "%U", unformat_ip6_address, &a6))
1400 clib_error_return (0,
1401 "expecting IPv6 address but got `%U'",
1402 format_unformat_error, input);
1408 clib_error_return (0,
1409 "expecting IP4/IP6 address `%U'. Usage: ping <addr> [source <intf>] [size <datasz>] [repeat <count>] [verbose]",
1410 format_unformat_error, input);
1414 /* allow for the second AF in the same ping */
1415 if (!ping_ip4 && (unformat (input, "ipv4")))
1417 if (unformat (input, "%U", unformat_ip4_address, &a4))
1422 else if (!ping_ip6 && (unformat (input, "ipv6")))
1424 if (unformat (input, "%U", unformat_ip6_address, &a6))
1430 /* parse the rest of the parameters in a cycle */
1431 while (!unformat_eof (input, NULL))
1433 if (unformat (input, "source"))
1436 (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
1439 clib_error_return (0,
1440 "unknown interface `%U'",
1441 format_unformat_error, input);
1445 else if (unformat (input, "size"))
1447 if (!unformat (input, "%u", &data_len))
1450 clib_error_return (0,
1451 "expecting size but got `%U'",
1452 format_unformat_error, input);
1455 if (data_len > PING_MAXIMUM_DATA_SIZE)
1458 clib_error_return (0,
1459 "%d is bigger than maximum allowed payload size %d",
1460 data_len, PING_MAXIMUM_DATA_SIZE);
1464 else if (unformat (input, "table-id"))
1466 if (!unformat (input, "%u", &table_id))
1469 clib_error_return (0,
1470 "expecting table-id but got `%U'",
1471 format_unformat_error, input);
1475 else if (unformat (input, "interval"))
1477 if (!unformat (input, "%f", &ping_interval))
1480 clib_error_return (0,
1481 "expecting interval (floating point number) got `%U'",
1482 format_unformat_error, input);
1486 else if (unformat (input, "repeat"))
1488 if (!unformat (input, "%u", &ping_repeat))
1491 clib_error_return (0,
1492 "expecting repeat count but got `%U'",
1493 format_unformat_error, input);
1497 else if (unformat (input, "burst"))
1499 if (!unformat (input, "%u", &ping_burst))
1502 clib_error_return (0,
1503 "expecting burst count but got `%U'",
1504 format_unformat_error, input);
1508 else if (unformat (input, "verbose"))
1514 error = clib_error_return (0, "unknown input `%U'",
1515 format_unformat_error, input);
1521 * Operationally, one won't (and shouldn't) need to send more than a frame worth of pings.
1522 * But it may be handy during the debugging.
1526 #define MAX_PING_BURST (10*VLIB_FRAME_SIZE)
1528 #define MAX_PING_BURST (VLIB_FRAME_SIZE)
1531 if (ping_burst < 1 || ping_burst > MAX_PING_BURST)
1532 return clib_error_return (0, "burst size must be between 1 and %u",
1535 run_ping_ip46_address (vm, table_id, ping_ip4 ? &a4 : NULL,
1536 ping_ip6 ? &a6 : NULL, sw_if_index, ping_interval,
1537 ping_repeat, data_len, ping_burst, verbose);
1543 * This command sends an ICMP ECHO_REQUEST to network hosts. The address
1544 * can be an IPv4 or IPv6 address (or both at the same time).
1548 * Example of how ping an IPv4 address:
1549 * @cliexstart{ping 172.16.1.2 source GigabitEthernet2/0/0 repeat 2}
1550 * 64 bytes from 172.16.1.2: icmp_seq=1 ttl=64 time=.1090 ms
1551 * 64 bytes from 172.16.1.2: icmp_seq=2 ttl=64 time=.0914 ms
1553 * Statistics: 2 sent, 2 received, 0% packet loss
1556 * Example of how ping both an IPv4 address and IPv6 address at the same time:
1557 * @cliexstart{ping 172.16.1.2 ipv6 fe80::24a5:f6ff:fe9c:3a36 source GigabitEthernet2/0/0 repeat 2 verbose}
1558 * Adjacency index: 10, sw_if_index: 1
1559 * Adj: ip6-discover-neighbor
1561 * Forced set interface: 1
1562 * Adjacency index: 0, sw_if_index: 4294967295
1565 * Forced set interface: 1
1566 * Source address: 172.16.1.1
1567 * 64 bytes from 172.16.1.2: icmp_seq=1 ttl=64 time=.1899 ms
1568 * Adjacency index: 10, sw_if_index: 1
1569 * Adj: ip6-discover-neighbor
1571 * Forced set interface: 1
1572 * Adjacency index: 0, sw_if_index: 4294967295
1575 * Forced set interface: 1
1576 * Source address: 172.16.1.1
1577 * 64 bytes from 172.16.1.2: icmp_seq=2 ttl=64 time=.0910 ms
1579 * Statistics: 4 sent, 2 received, 50% packet loss
1584 VLIB_CLI_COMMAND (ping_command, static) =
1587 .function = ping_ip_address,
1588 .short_help = "ping {<ip-addr> | ipv4 <ip4-addr> | ipv6 <ip6-addr>}"
1589 " [ipv4 <ip4-addr> | ipv6 <ip6-addr>] [source <interface>]"
1590 " [size <pktsize:60>] [interval <sec:1>] [repeat <cnt:5>] [table-id <id:0>]"
1591 " [burst <count:1>] [verbose]",
1596 static clib_error_t *
1597 ping_cli_init (vlib_main_t * vm)
1599 vlib_thread_main_t *tm = vlib_get_thread_main ();
1600 ping_main_t *pm = &ping_main;
1602 pm->ip6_main = &ip6_main;
1603 pm->ip4_main = &ip4_main;
1604 icmp6_register_type (vm, ICMP6_echo_reply, ip6_icmp_echo_reply_node.index);
1605 ip4_icmp_register_type (vm, ICMP4_echo_reply,
1606 ip4_icmp_echo_reply_node.index);
1607 if (tm->n_vlib_mains > 1)
1608 clib_spinlock_init (&pm->ping_run_check_lock);
1610 ip4_icmp_register_type (vm, ICMP4_echo_request,
1611 ip4_icmp_echo_request_node.index);
1612 icmp6_register_type (vm, ICMP6_echo_request,
1613 ip6_icmp_echo_request_node.index);
1615 ping_plugin_api_hookup (vm);
1620 VLIB_INIT_FUNCTION (ping_cli_init);
1623 VLIB_PLUGIN_REGISTER () = {
1624 .version = VPP_BUILD_VER,
1625 .description = "Ping (ping)",
1630 * fd.io coding-style-patch-verification: ON
1633 * eval: (c-set-style "gnu")