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.
15 #include <vlib/vlib.h>
16 #include <vnet/vnet.h>
17 #include <vnet/pg/pg.h>
18 #include <vppinfra/error.h>
20 #include <vnet/ip/ip.h>
22 #include <vppinfra/hash.h>
23 #include <vppinfra/error.h>
24 #include <vppinfra/elog.h>
26 #include <vnet/ip/ip6_hop_by_hop.h>
27 #include <vnet/fib/ip6_fib.h>
28 #include <vnet/classify/vnet_classify.h>
32 * @brief In-band OAM (iOAM).
34 * In-band OAM (iOAM) is an implementation study to record operational
35 * information in the packet while the packet traverses a path between
36 * two points in the network.
38 * VPP can function as in-band OAM encapsulating, transit and
39 * decapsulating node. In this version of VPP in-band OAM data is
40 * transported as options in an IPv6 hop-by-hop extension header. Hence
41 * in-band OAM can be enabled for IPv6 traffic.
44 #ifndef CLIB_MARCH_VARIANT
45 ip6_hop_by_hop_ioam_main_t ip6_hop_by_hop_ioam_main;
46 #endif /* CLIB_MARCH_VARIANT */
48 #define foreach_ip6_hbyh_ioam_input_next \
49 _(IP6_REWRITE, "ip6-rewrite") \
50 _(IP6_LOOKUP, "ip6-lookup") \
55 #define _(s,n) IP6_HBYH_IOAM_INPUT_NEXT_##s,
56 foreach_ip6_hbyh_ioam_input_next
58 IP6_HBYH_IOAM_INPUT_N_NEXT,
59 } ip6_hbyh_ioam_input_next_t;
61 #ifndef CLIB_MARCH_VARIANT
63 unformat_opaque_ioam (unformat_input_t * input, va_list * args)
65 u64 *opaquep = va_arg (*args, u64 *);
69 if (unformat (input, "ioam-encap %s", &flow_name))
71 *opaquep = ioam_flow_add (1, flow_name);
74 else if (unformat (input, "ioam-decap %s", &flow_name))
76 *opaquep = ioam_flow_add (0, flow_name);
85 get_flow_name_from_flow_ctx (u32 flow_ctx)
87 flow_data_t *flow = NULL;
88 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
91 index = IOAM_MASK_DECAP_BIT (flow_ctx);
93 if (pool_is_free_index (hm->flows, index))
96 flow = pool_elt_at_index (hm->flows, index);
97 return (flow->flow_name);
100 /* The main h-b-h tracer will be invoked, no need to do much here */
102 ip6_hbh_add_register_option (u8 option,
104 int rewrite_options (u8 * rewrite_string,
107 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
109 ASSERT ((u32) option < ARRAY_LEN (hm->add_options));
111 /* Already registered */
112 if (hm->add_options[option])
115 hm->add_options[option] = rewrite_options;
116 hm->options_size[option] = size;
122 ip6_hbh_add_unregister_option (u8 option)
124 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
126 ASSERT ((u32) option < ARRAY_LEN (hm->add_options));
129 if (!hm->add_options[option])
132 hm->add_options[option] = NULL;
133 hm->options_size[option] = 0;
137 /* Config handler registration */
139 ip6_hbh_config_handler_register (u8 option,
140 int config_handler (void *data, u8 disable))
142 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
144 ASSERT ((u32) option < ARRAY_LEN (hm->config_handler));
146 /* Already registered */
147 if (hm->config_handler[option])
148 return (VNET_API_ERROR_INVALID_REGISTRATION);
150 hm->config_handler[option] = config_handler;
156 ip6_hbh_config_handler_unregister (u8 option)
158 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
160 ASSERT ((u32) option < ARRAY_LEN (hm->config_handler));
163 if (!hm->config_handler[option])
164 return (VNET_API_ERROR_INVALID_REGISTRATION);
166 hm->config_handler[option] = NULL;
170 /* Flow handler registration */
172 ip6_hbh_flow_handler_register (u8 option,
173 u32 ioam_flow_handler (u32 flow_ctx, u8 add))
175 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
177 ASSERT ((u32) option < ARRAY_LEN (hm->flow_handler));
179 /* Already registered */
180 if (hm->flow_handler[option])
181 return (VNET_API_ERROR_INVALID_REGISTRATION);
183 hm->flow_handler[option] = ioam_flow_handler;
189 ip6_hbh_flow_handler_unregister (u8 option)
191 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
193 ASSERT ((u32) option < ARRAY_LEN (hm->flow_handler));
196 if (!hm->flow_handler[option])
197 return (VNET_API_ERROR_INVALID_REGISTRATION);
199 hm->flow_handler[option] = NULL;
202 #endif /* CLIB_MARCH_VARIANT */
207 } ip6_add_hop_by_hop_trace_t;
209 /* packet trace format function */
211 format_ip6_add_hop_by_hop_trace (u8 * s, va_list * args)
213 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
214 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
215 ip6_add_hop_by_hop_trace_t *t = va_arg (*args,
216 ip6_add_hop_by_hop_trace_t *);
218 s = format (s, "IP6_ADD_HOP_BY_HOP: next index %d", t->next_index);
222 extern vlib_node_registration_t ip6_add_hop_by_hop_node;
224 #define foreach_ip6_add_hop_by_hop_error \
225 _(PROCESSED, "Pkts w/ added ip6 hop-by-hop options")
229 #define _(sym,str) IP6_ADD_HOP_BY_HOP_ERROR_##sym,
230 foreach_ip6_add_hop_by_hop_error
232 IP6_ADD_HOP_BY_HOP_N_ERROR,
233 } ip6_add_hop_by_hop_error_t;
235 static char *ip6_add_hop_by_hop_error_strings[] = {
236 #define _(sym,string) string,
237 foreach_ip6_add_hop_by_hop_error
241 VLIB_NODE_FN (ip6_add_hop_by_hop_node) (vlib_main_t * vm,
242 vlib_node_runtime_t * node,
243 vlib_frame_t * frame)
245 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
246 u32 n_left_from, *from, *to_next;
247 ip_lookup_next_t next_index;
249 u8 *rewrite = hm->rewrite;
250 u32 rewrite_length = vec_len (rewrite);
252 from = vlib_frame_vector_args (frame);
253 n_left_from = frame->n_vectors;
254 next_index = node->cached_next_index;
256 while (n_left_from > 0)
260 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
261 while (n_left_from >= 4 && n_left_to_next >= 2)
264 vlib_buffer_t *b0, *b1;
266 ip6_header_t *ip0, *ip1;
267 ip6_hop_by_hop_header_t *hbh0, *hbh1;
268 u64 *copy_src0, *copy_dst0, *copy_src1, *copy_dst1;
271 /* Prefetch next iteration. */
273 vlib_buffer_t *p2, *p3;
275 p2 = vlib_get_buffer (vm, from[2]);
276 p3 = vlib_get_buffer (vm, from[3]);
278 vlib_prefetch_buffer_header (p2, LOAD);
279 vlib_prefetch_buffer_header (p3, LOAD);
281 CLIB_PREFETCH (p2->data - rewrite_length,
282 2 * CLIB_CACHE_LINE_BYTES, STORE);
283 CLIB_PREFETCH (p3->data - rewrite_length,
284 2 * CLIB_CACHE_LINE_BYTES, STORE);
287 /* speculatively enqueue b0 and b1 to the current next frame */
288 to_next[0] = bi0 = from[0];
289 to_next[1] = bi1 = from[1];
295 b0 = vlib_get_buffer (vm, bi0);
296 b1 = vlib_get_buffer (vm, bi1);
298 /* $$$$$ Dual loop: process 2 x packets here $$$$$ */
299 ip0 = vlib_buffer_get_current (b0);
300 ip1 = vlib_buffer_get_current (b1);
302 /* Copy the ip header left by the required amount */
303 copy_dst0 = (u64 *) (((u8 *) ip0) - rewrite_length);
304 copy_dst1 = (u64 *) (((u8 *) ip1) - rewrite_length);
305 copy_src0 = (u64 *) ip0;
306 copy_src1 = (u64 *) ip1;
308 copy_dst0[0] = copy_src0[0];
309 copy_dst0[1] = copy_src0[1];
310 copy_dst0[2] = copy_src0[2];
311 copy_dst0[3] = copy_src0[3];
312 copy_dst0[4] = copy_src0[4];
314 copy_dst1[0] = copy_src1[0];
315 copy_dst1[1] = copy_src1[1];
316 copy_dst1[2] = copy_src1[2];
317 copy_dst1[3] = copy_src1[3];
318 copy_dst1[4] = copy_src1[4];
320 vlib_buffer_advance (b0, -(word) rewrite_length);
321 vlib_buffer_advance (b1, -(word) rewrite_length);
322 ip0 = vlib_buffer_get_current (b0);
323 ip1 = vlib_buffer_get_current (b1);
325 hbh0 = (ip6_hop_by_hop_header_t *) (ip0 + 1);
326 hbh1 = (ip6_hop_by_hop_header_t *) (ip1 + 1);
327 /* $$$ tune, rewrite_length is a multiple of 8 */
328 clib_memcpy_fast (hbh0, rewrite, rewrite_length);
329 clib_memcpy_fast (hbh1, rewrite, rewrite_length);
330 /* Patch the protocol chain, insert the h-b-h (type 0) header */
331 hbh0->protocol = ip0->protocol;
332 hbh1->protocol = ip1->protocol;
336 clib_net_to_host_u16 (ip0->payload_length) + rewrite_length;
338 clib_net_to_host_u16 (ip1->payload_length) + rewrite_length;
339 ip0->payload_length = clib_host_to_net_u16 (new_l0);
340 ip1->payload_length = clib_host_to_net_u16 (new_l1);
342 /* Populate the (first) h-b-h list elt */
343 next0 = IP6_HBYH_IOAM_INPUT_NEXT_IP6_LOOKUP;
344 next1 = IP6_HBYH_IOAM_INPUT_NEXT_IP6_LOOKUP;
347 /* $$$$$ End of processing 2 x packets $$$$$ */
349 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
351 if (b0->flags & VLIB_BUFFER_IS_TRACED)
353 ip6_add_hop_by_hop_trace_t *t =
354 vlib_add_trace (vm, node, b0, sizeof (*t));
355 t->next_index = next0;
357 if (b1->flags & VLIB_BUFFER_IS_TRACED)
359 ip6_add_hop_by_hop_trace_t *t =
360 vlib_add_trace (vm, node, b1, sizeof (*t));
361 t->next_index = next1;
365 /* verify speculative enqueues, maybe switch current next frame */
366 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
367 to_next, n_left_to_next,
368 bi0, bi1, next0, next1);
370 while (n_left_from > 0 && n_left_to_next > 0)
376 ip6_hop_by_hop_header_t *hbh0;
377 u64 *copy_src0, *copy_dst0;
380 /* speculatively enqueue b0 to the current next frame */
388 b0 = vlib_get_buffer (vm, bi0);
390 ip0 = vlib_buffer_get_current (b0);
392 /* Copy the ip header left by the required amount */
393 copy_dst0 = (u64 *) (((u8 *) ip0) - rewrite_length);
394 copy_src0 = (u64 *) ip0;
396 copy_dst0[0] = copy_src0[0];
397 copy_dst0[1] = copy_src0[1];
398 copy_dst0[2] = copy_src0[2];
399 copy_dst0[3] = copy_src0[3];
400 copy_dst0[4] = copy_src0[4];
401 vlib_buffer_advance (b0, -(word) rewrite_length);
402 ip0 = vlib_buffer_get_current (b0);
404 hbh0 = (ip6_hop_by_hop_header_t *) (ip0 + 1);
405 /* $$$ tune, rewrite_length is a multiple of 8 */
406 clib_memcpy_fast (hbh0, rewrite, rewrite_length);
407 /* Patch the protocol chain, insert the h-b-h (type 0) header */
408 hbh0->protocol = ip0->protocol;
411 clib_net_to_host_u16 (ip0->payload_length) + rewrite_length;
412 ip0->payload_length = clib_host_to_net_u16 (new_l0);
414 /* Populate the (first) h-b-h list elt */
415 next0 = IP6_HBYH_IOAM_INPUT_NEXT_IP6_LOOKUP;
417 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
418 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
420 ip6_add_hop_by_hop_trace_t *t =
421 vlib_add_trace (vm, node, b0, sizeof (*t));
422 t->next_index = next0;
427 /* verify speculative enqueue, maybe switch current next frame */
428 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
429 to_next, n_left_to_next,
433 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
436 vlib_node_increment_counter (vm, ip6_add_hop_by_hop_node.index,
437 IP6_ADD_HOP_BY_HOP_ERROR_PROCESSED, processed);
438 return frame->n_vectors;
441 VLIB_REGISTER_NODE (ip6_add_hop_by_hop_node) =
443 .name = "ip6-add-hop-by-hop",
444 .vector_size = sizeof (u32),
445 .format_trace = format_ip6_add_hop_by_hop_trace,
446 .type = VLIB_NODE_TYPE_INTERNAL,
447 .n_errors = ARRAY_LEN (ip6_add_hop_by_hop_error_strings),
448 .error_strings = ip6_add_hop_by_hop_error_strings,
449 /* See ip/lookup.h */
450 .n_next_nodes = IP6_HBYH_IOAM_INPUT_N_NEXT,
452 #define _(s,n) [IP6_HBYH_IOAM_INPUT_NEXT_##s] = n,
453 foreach_ip6_hbyh_ioam_input_next
458 /* The main h-b-h tracer was already invoked, no need to do much here */
462 } ip6_pop_hop_by_hop_trace_t;
464 /* packet trace format function */
466 format_ip6_pop_hop_by_hop_trace (u8 * s, va_list * args)
468 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
469 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
470 ip6_pop_hop_by_hop_trace_t *t =
471 va_arg (*args, ip6_pop_hop_by_hop_trace_t *);
473 s = format (s, "IP6_POP_HOP_BY_HOP: next index %d", t->next_index);
477 #ifndef CLIB_MARCH_VARIANT
479 ip6_hbh_pop_register_option (u8 option,
480 int options (vlib_buffer_t * b,
482 ip6_hop_by_hop_option_t * opt))
484 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
486 ASSERT ((u32) option < ARRAY_LEN (hm->pop_options));
488 /* Already registered */
489 if (hm->pop_options[option])
492 hm->pop_options[option] = options;
498 ip6_hbh_pop_unregister_option (u8 option)
500 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
502 ASSERT ((u32) option < ARRAY_LEN (hm->pop_options));
505 if (!hm->pop_options[option])
508 hm->pop_options[option] = NULL;
511 #endif /* CLIB_MARCH_VARIANT */
513 extern vlib_node_registration_t ip6_pop_hop_by_hop_node;
515 #define foreach_ip6_pop_hop_by_hop_error \
516 _(PROCESSED, "Pkts w/ removed ip6 hop-by-hop options") \
517 _(NO_HOHO, "Pkts w/ no ip6 hop-by-hop options") \
518 _(OPTION_FAILED, "ip6 pop hop-by-hop failed to process")
522 #define _(sym,str) IP6_POP_HOP_BY_HOP_ERROR_##sym,
523 foreach_ip6_pop_hop_by_hop_error
525 IP6_POP_HOP_BY_HOP_N_ERROR,
526 } ip6_pop_hop_by_hop_error_t;
528 static char *ip6_pop_hop_by_hop_error_strings[] = {
529 #define _(sym,string) string,
530 foreach_ip6_pop_hop_by_hop_error
535 ioam_pop_hop_by_hop_processing (vlib_main_t * vm,
537 ip6_hop_by_hop_header_t * hbh0,
540 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
541 ip6_hop_by_hop_option_t *opt0, *limit0;
547 opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
548 limit0 = (ip6_hop_by_hop_option_t *)
549 ((u8 *) hbh0 + ((hbh0->length + 1) << 3));
551 /* Scan the set of h-b-h options, process ones that we understand */
552 while (opt0 < limit0)
558 opt0 = (ip6_hop_by_hop_option_t *) ((u8 *) opt0) + 1;
563 if (hm->pop_options[type0])
565 if ((*hm->pop_options[type0]) (b, ip0, opt0) < 0)
567 vlib_node_increment_counter (vm,
568 ip6_pop_hop_by_hop_node.index,
569 IP6_POP_HOP_BY_HOP_ERROR_OPTION_FAILED,
575 (ip6_hop_by_hop_option_t *) (((u8 *) opt0) + opt0->length +
576 sizeof (ip6_hop_by_hop_option_t));
580 VLIB_NODE_FN (ip6_pop_hop_by_hop_node) (vlib_main_t * vm,
581 vlib_node_runtime_t * node,
582 vlib_frame_t * frame)
584 u32 n_left_from, *from, *to_next;
585 ip_lookup_next_t next_index;
589 from = vlib_frame_vector_args (frame);
590 n_left_from = frame->n_vectors;
591 next_index = node->cached_next_index;
593 while (n_left_from > 0)
597 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
599 while (n_left_from >= 4 && n_left_to_next >= 2)
602 vlib_buffer_t *b0, *b1;
604 u32 adj_index0, adj_index1;
605 ip6_header_t *ip0, *ip1;
606 ip_adjacency_t *adj0, *adj1;
607 ip6_hop_by_hop_header_t *hbh0, *hbh1;
608 u64 *copy_dst0, *copy_src0, *copy_dst1, *copy_src1;
611 /* Prefetch next iteration. */
613 vlib_buffer_t *p2, *p3;
615 p2 = vlib_get_buffer (vm, from[2]);
616 p3 = vlib_get_buffer (vm, from[3]);
618 vlib_prefetch_buffer_header (p2, LOAD);
619 vlib_prefetch_buffer_header (p3, LOAD);
621 clib_prefetch_store (p2->data);
622 clib_prefetch_store (p3->data);
625 /* speculatively enqueue b0 and b1 to the current next frame */
626 to_next[0] = bi0 = from[0];
627 to_next[1] = bi1 = from[1];
633 b0 = vlib_get_buffer (vm, bi0);
634 b1 = vlib_get_buffer (vm, bi1);
636 /* $$$$$ Dual loop: process 2 x packets here $$$$$ */
637 ip0 = vlib_buffer_get_current (b0);
638 ip1 = vlib_buffer_get_current (b1);
639 adj_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
640 adj_index1 = vnet_buffer (b1)->ip.adj_index[VLIB_TX];
641 adj0 = adj_get (adj_index0);
642 adj1 = adj_get (adj_index1);
644 next0 = adj0->lookup_next_index;
645 next1 = adj1->lookup_next_index;
647 hbh0 = (ip6_hop_by_hop_header_t *) (ip0 + 1);
648 hbh1 = (ip6_hop_by_hop_header_t *) (ip1 + 1);
650 ioam_pop_hop_by_hop_processing (vm, ip0, hbh0, b0);
651 ioam_pop_hop_by_hop_processing (vm, ip1, hbh1, b1);
653 vlib_buffer_advance (b0, (hbh0->length + 1) << 3);
654 vlib_buffer_advance (b1, (hbh1->length + 1) << 3);
656 new_l0 = clib_net_to_host_u16 (ip0->payload_length) -
657 ((hbh0->length + 1) << 3);
658 new_l1 = clib_net_to_host_u16 (ip1->payload_length) -
659 ((hbh1->length + 1) << 3);
661 ip0->payload_length = clib_host_to_net_u16 (new_l0);
662 ip1->payload_length = clib_host_to_net_u16 (new_l1);
664 ip0->protocol = hbh0->protocol;
665 ip1->protocol = hbh1->protocol;
667 copy_src0 = (u64 *) ip0;
668 copy_src1 = (u64 *) ip1;
669 copy_dst0 = copy_src0 + (hbh0->length + 1);
670 copy_dst0[4] = copy_src0[4];
671 copy_dst0[3] = copy_src0[3];
672 copy_dst0[2] = copy_src0[2];
673 copy_dst0[1] = copy_src0[1];
674 copy_dst0[0] = copy_src0[0];
675 copy_dst1 = copy_src1 + (hbh1->length + 1);
676 copy_dst1[4] = copy_src1[4];
677 copy_dst1[3] = copy_src1[3];
678 copy_dst1[2] = copy_src1[2];
679 copy_dst1[1] = copy_src1[1];
680 copy_dst1[0] = copy_src1[0];
682 /* $$$$$ End of processing 2 x packets $$$$$ */
684 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
686 if (b0->flags & VLIB_BUFFER_IS_TRACED)
688 ip6_pop_hop_by_hop_trace_t *t =
689 vlib_add_trace (vm, node, b0, sizeof (*t));
690 t->next_index = next0;
692 if (b1->flags & VLIB_BUFFER_IS_TRACED)
694 ip6_pop_hop_by_hop_trace_t *t =
695 vlib_add_trace (vm, node, b1, sizeof (*t));
696 t->next_index = next1;
700 /* verify speculative enqueues, maybe switch current next frame */
701 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
702 to_next, n_left_to_next,
703 bi0, bi1, next0, next1);
706 while (n_left_from > 0 && n_left_to_next > 0)
713 ip_adjacency_t *adj0;
714 ip6_hop_by_hop_header_t *hbh0;
715 u64 *copy_dst0, *copy_src0;
718 /* speculatively enqueue b0 to the current next frame */
726 b0 = vlib_get_buffer (vm, bi0);
728 ip0 = vlib_buffer_get_current (b0);
729 adj_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
730 adj0 = adj_get (adj_index0);
732 /* Default use the next_index from the adjacency. */
733 next0 = adj0->lookup_next_index;
735 /* Perfectly normal to end up here w/ out h-b-h header */
736 hbh0 = (ip6_hop_by_hop_header_t *) (ip0 + 1);
738 /* TODO:Temporarily doing it here.. do this validation in end_of_path_cb */
739 ioam_pop_hop_by_hop_processing (vm, ip0, hbh0, b0);
740 /* Pop the trace data */
741 vlib_buffer_advance (b0, (hbh0->length + 1) << 3);
742 new_l0 = clib_net_to_host_u16 (ip0->payload_length) -
743 ((hbh0->length + 1) << 3);
744 ip0->payload_length = clib_host_to_net_u16 (new_l0);
745 ip0->protocol = hbh0->protocol;
746 copy_src0 = (u64 *) ip0;
747 copy_dst0 = copy_src0 + (hbh0->length + 1);
748 copy_dst0[4] = copy_src0[4];
749 copy_dst0[3] = copy_src0[3];
750 copy_dst0[2] = copy_src0[2];
751 copy_dst0[1] = copy_src0[1];
752 copy_dst0[0] = copy_src0[0];
755 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
756 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
758 ip6_pop_hop_by_hop_trace_t *t =
759 vlib_add_trace (vm, node, b0, sizeof (*t));
760 t->next_index = next0;
763 /* verify speculative enqueue, maybe switch current next frame */
764 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
765 to_next, n_left_to_next,
769 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
772 vlib_node_increment_counter (vm, ip6_pop_hop_by_hop_node.index,
773 IP6_POP_HOP_BY_HOP_ERROR_PROCESSED, processed);
774 vlib_node_increment_counter (vm, ip6_pop_hop_by_hop_node.index,
775 IP6_POP_HOP_BY_HOP_ERROR_NO_HOHO, no_header);
776 return frame->n_vectors;
779 VLIB_REGISTER_NODE (ip6_pop_hop_by_hop_node) =
781 .name = "ip6-pop-hop-by-hop",
782 .vector_size = sizeof (u32),
783 .format_trace = format_ip6_pop_hop_by_hop_trace,
784 .type = VLIB_NODE_TYPE_INTERNAL,
785 .sibling_of = "ip6-lookup",
786 .n_errors = ARRAY_LEN (ip6_pop_hop_by_hop_error_strings),
787 .error_strings = ip6_pop_hop_by_hop_error_strings,
788 /* See ip/lookup.h */
796 } ip6_local_hop_by_hop_trace_t;
798 #ifndef CLIB_MARCH_VARIANT
800 /* packet trace format function */
802 format_ip6_local_hop_by_hop_trace (u8 * s, va_list * args)
804 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
805 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
806 ip6_local_hop_by_hop_trace_t *t =
807 va_arg (*args, ip6_local_hop_by_hop_trace_t *);
809 s = format (s, "IP6_LOCAL_HOP_BY_HOP: protocol %d, next index %d\n",
810 t->protocol, t->next_index);
814 vlib_node_registration_t ip6_local_hop_by_hop_node;
816 #endif /* CLIB_MARCH_VARIANT */
818 #define foreach_ip6_local_hop_by_hop_error \
819 _(UNKNOWN, "Unknown protocol ip6 local h-b-h packets dropped") \
820 _(OK, "Good ip6 local h-b-h packets")
824 #define _(sym,str) IP6_LOCAL_HOP_BY_HOP_ERROR_##sym,
825 foreach_ip6_local_hop_by_hop_error
827 IP6_LOCAL_HOP_BY_HOP_N_ERROR,
828 } ip6_local_hop_by_hop_error_t;
830 #ifndef CLIB_MARCH_VARIANT
831 static char *ip6_local_hop_by_hop_error_strings[] = {
832 #define _(sym,string) string,
833 foreach_ip6_local_hop_by_hop_error
836 #endif /* CLIB_MARCH_VARIANT */
840 IP6_LOCAL_HOP_BY_HOP_NEXT_DROP,
841 IP6_LOCAL_HOP_BY_HOP_N_NEXT,
842 } ip6_local_hop_by_hop_next_t;
845 ip6_local_hop_by_hop_inline (vlib_main_t * vm,
846 vlib_node_runtime_t * node, vlib_frame_t * frame,
849 u32 n_left_from, *from;
850 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
851 u16 nexts[VLIB_FRAME_SIZE], *next;
853 u32 unknown_proto_error = node->errors[IP6_LOCAL_HOP_BY_HOP_ERROR_UNKNOWN];
854 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
856 /* Note: there is only one of these */
857 ip6_local_hop_by_hop_runtime_t *rt = hm->ip6_local_hbh_runtime;
859 from = vlib_frame_vector_args (frame);
860 n_left_from = frame->n_vectors;
862 vlib_get_buffers (vm, from, bufs, n_left_from);
866 while (n_left_from >= 4)
868 ip6_header_t *ip0, *ip1, *ip2, *ip3;
869 u8 *hbh0, *hbh1, *hbh2, *hbh3;
871 /* Prefetch next iteration. */
872 if (PREDICT_TRUE (n_left_from >= 8))
874 vlib_prefetch_buffer_header (b[4], STORE);
875 vlib_prefetch_buffer_header (b[5], STORE);
876 vlib_prefetch_buffer_header (b[6], STORE);
877 vlib_prefetch_buffer_header (b[7], STORE);
878 clib_prefetch_store (b[4]->data);
879 clib_prefetch_store (b[5]->data);
880 clib_prefetch_store (b[6]->data);
881 clib_prefetch_store (b[7]->data);
885 * Leave current_data pointing at the IP header.
886 * It's reasonably likely that any registered handler
887 * will want to know where to find the ip6 header.
889 ip0 = vlib_buffer_get_current (b[0]);
890 ip1 = vlib_buffer_get_current (b[1]);
891 ip2 = vlib_buffer_get_current (b[2]);
892 ip3 = vlib_buffer_get_current (b[3]);
894 /* Look at hop-by-hop header */
895 hbh0 = ip6_next_header (ip0);
896 hbh1 = ip6_next_header (ip1);
897 hbh2 = ip6_next_header (ip2);
898 hbh3 = ip6_next_header (ip3);
901 * ... to find the next header type and see if we
902 * have a handler for it...
904 next[0] = rt->next_index_by_protocol[*hbh0];
905 next[1] = rt->next_index_by_protocol[*hbh1];
906 next[2] = rt->next_index_by_protocol[*hbh2];
907 next[3] = rt->next_index_by_protocol[*hbh3];
909 b[0]->error = unknown_proto_error;
910 b[1]->error = unknown_proto_error;
911 b[2]->error = unknown_proto_error;
912 b[3]->error = unknown_proto_error;
914 /* Account for non-drop pkts */
922 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
924 ip6_local_hop_by_hop_trace_t *t =
925 vlib_add_trace (vm, node, b[0], sizeof (*t));
926 t->next_index = next[0];
929 if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
931 ip6_local_hop_by_hop_trace_t *t =
932 vlib_add_trace (vm, node, b[1], sizeof (*t));
933 t->next_index = next[1];
936 if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
938 ip6_local_hop_by_hop_trace_t *t =
939 vlib_add_trace (vm, node, b[2], sizeof (*t));
940 t->next_index = next[2];
943 if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
945 ip6_local_hop_by_hop_trace_t *t =
946 vlib_add_trace (vm, node, b[3], sizeof (*t));
947 t->next_index = next[3];
957 while (n_left_from > 0)
962 ip0 = vlib_buffer_get_current (b[0]);
964 hbh0 = ip6_next_header (ip0);
966 next[0] = rt->next_index_by_protocol[*hbh0];
968 b[0]->error = unknown_proto_error;
973 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
975 ip6_local_hop_by_hop_trace_t *t =
976 vlib_add_trace (vm, node, b[0], sizeof (*t));
977 t->next_index = next[0];
987 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
989 vlib_node_increment_counter (vm, node->node_index,
990 IP6_LOCAL_HOP_BY_HOP_ERROR_OK, ok);
991 return frame->n_vectors;
994 VLIB_NODE_FN (ip6_local_hop_by_hop_node) (vlib_main_t * vm,
995 vlib_node_runtime_t * node,
996 vlib_frame_t * frame)
998 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
999 return ip6_local_hop_by_hop_inline (vm, node, frame, 1 /* is_trace */ );
1001 return ip6_local_hop_by_hop_inline (vm, node, frame, 0 /* is_trace */ );
1004 #ifndef CLIB_MARCH_VARIANT
1005 VLIB_REGISTER_NODE (ip6_local_hop_by_hop_node) =
1007 .name = "ip6-local-hop-by-hop",
1008 .vector_size = sizeof (u32),
1009 .format_trace = format_ip6_local_hop_by_hop_trace,
1010 .type = VLIB_NODE_TYPE_INTERNAL,
1012 .n_errors = ARRAY_LEN(ip6_local_hop_by_hop_error_strings),
1013 .error_strings = ip6_local_hop_by_hop_error_strings,
1015 .n_next_nodes = IP6_LOCAL_HOP_BY_HOP_N_NEXT,
1017 /* edit / add dispositions here */
1020 [IP6_LOCAL_HOP_BY_HOP_NEXT_DROP] = "error-drop",
1025 show_ip6_hbh_command_fn (vlib_main_t * vm,
1026 unformat_input_t * input, vlib_cli_command_t * cmd)
1030 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1031 ip6_local_hop_by_hop_runtime_t *rt = hm->ip6_local_hbh_runtime;
1032 vlib_node_t *n = vlib_get_node (vm, ip6_local_hop_by_hop_node.index);
1034 vlib_cli_output (vm, "%-6s%s", "Proto", "Node Name");
1036 for (i = 0; i < ARRAY_LEN (rt->next_index_by_protocol); i++)
1038 if ((next_index = rt->next_index_by_protocol[i]))
1040 u32 next_node_index = n->next_nodes[next_index];
1041 vlib_node_t *next_n = vlib_get_node (vm, next_node_index);
1042 vlib_cli_output (vm, "[%3d] %v", i, next_n->name);
1050 * Display the set of ip6 local hop-by-hop next protocol handler nodes
1053 * Display ip6 local hop-by-hop next protocol handler nodes
1054 * @cliexcmd{show ip6 hbh}
1056 VLIB_CLI_COMMAND (show_ip6_hbh, static) = {
1057 .path = "show ip6 hbh",
1058 .short_help = "show ip6 hbh",
1059 .function = show_ip6_hbh_command_fn,
1063 #endif /* CLIB_MARCH_VARIANT */
1066 #ifndef CLIB_MARCH_VARIANT
1067 static clib_error_t *
1068 ip6_hop_by_hop_ioam_init (vlib_main_t * vm)
1070 clib_error_t *error;
1071 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1073 if ((error = vlib_call_init_function (vm, ip_main_init)))
1076 if ((error = vlib_call_init_function (vm, ip6_lookup_init)))
1080 hm->vnet_main = vnet_get_main ();
1081 hm->unix_time_0 = (u32) time (0); /* Store starting time */
1082 hm->vlib_time_0 = vlib_time_now (vm);
1083 hm->ioam_flag = IOAM_HBYH_MOD;
1084 clib_memset (hm->add_options, 0, sizeof (hm->add_options));
1085 clib_memset (hm->pop_options, 0, sizeof (hm->pop_options));
1086 clib_memset (hm->options_size, 0, sizeof (hm->options_size));
1088 vnet_classify_register_unformat_opaque_index_fn (unformat_opaque_ioam);
1089 hm->ip6_local_hbh_runtime = clib_mem_alloc_aligned
1090 (sizeof (ip6_local_hop_by_hop_runtime_t), CLIB_CACHE_LINE_BYTES);
1092 memset (hm->ip6_local_hbh_runtime, 0,
1093 sizeof (ip6_local_hop_by_hop_runtime_t));
1095 ip6_register_protocol (IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS,
1096 ip6_local_hop_by_hop_node.index);
1100 VLIB_INIT_FUNCTION (ip6_hop_by_hop_ioam_init) =
1102 .runs_after = VLIB_INITS("ip_main_init", "ip6_lookup_init"),
1106 ip6_local_hop_by_hop_register_protocol (u32 protocol, u32 node_index)
1108 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1109 vlib_main_t *vm = hm->vlib_main;
1110 ip6_local_hop_by_hop_runtime_t *local_hbh_runtime
1111 = hm->ip6_local_hbh_runtime;
1114 ASSERT (protocol < ARRAY_LEN (local_hbh_runtime->next_index_by_protocol));
1116 old_next_index = local_hbh_runtime->next_index_by_protocol[protocol];
1118 local_hbh_runtime->next_index_by_protocol[protocol] =
1119 vlib_node_add_next (vm, ip6_local_hop_by_hop_node.index, node_index);
1121 /* Someone will eventually do this. Trust me. */
1122 if (old_next_index &&
1123 (old_next_index != local_hbh_runtime->next_index_by_protocol[protocol]))
1124 clib_warning ("WARNING: replaced next index for protocol %d", protocol);
1128 ip6_ioam_set_rewrite (u8 ** rwp, int has_trace_option,
1129 int has_pot_option, int has_seqno_option)
1131 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1134 ip6_hop_by_hop_header_t *hbh;
1136 u8 *trace_data_size = NULL;
1137 u8 *pot_data_size = NULL;
1141 if (has_trace_option == 0 && has_pot_option == 0)
1144 /* Work out how much space we need */
1145 size = sizeof (ip6_hop_by_hop_header_t);
1147 //if (has_trace_option && hm->get_sizeof_options[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] != 0)
1148 if (has_trace_option
1149 && hm->options_size[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] != 0)
1151 size += hm->options_size[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST];
1154 && hm->add_options[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT] != 0)
1156 size += hm->options_size[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT];
1159 if (has_seqno_option)
1161 size += hm->options_size[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE];
1164 /* Round to a multiple of 8 octets */
1165 rnd_size = (size + 7) & ~7;
1167 /* allocate it, zero-fill / pad by construction */
1168 vec_validate (rewrite, rnd_size - 1);
1170 hbh = (ip6_hop_by_hop_header_t *) rewrite;
1171 /* Length of header in 8 octet units, not incl first 8 octets */
1172 hbh->length = (rnd_size >> 3) - 1;
1173 current = (u8 *) (hbh + 1);
1175 if (has_trace_option
1176 && hm->add_options[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] != 0)
1178 if (0 != (hm->options_size[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST]))
1181 &hm->options_size[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST];
1183 hm->add_options[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] (current,
1185 current += *trace_data_size;
1189 && hm->add_options[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT] != 0)
1192 &hm->options_size[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT];
1194 hm->add_options[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT] (current,
1196 current += *pot_data_size;
1199 if (has_seqno_option &&
1200 (hm->add_options[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE] != 0))
1202 if (0 == hm->add_options[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE] (current,
1205 [HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE])))
1206 current += hm->options_size[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE];
1214 clear_ioam_rewrite_fn (void)
1216 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1218 vec_free (hm->rewrite);
1220 hm->has_trace_option = 0;
1221 hm->has_pot_option = 0;
1222 hm->has_seqno_option = 0;
1223 hm->has_analyse_option = 0;
1224 if (hm->config_handler[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST])
1225 hm->config_handler[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] (NULL, 1);
1227 if (hm->config_handler[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT])
1228 hm->config_handler[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT] (NULL, 1);
1230 if (hm->config_handler[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE])
1232 hm->config_handler[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE] ((void *)
1233 &hm->has_analyse_option,
1241 clear_ioam_rewrite_command_fn (vlib_main_t * vm,
1242 unformat_input_t * input,
1243 vlib_cli_command_t * cmd)
1245 return (clear_ioam_rewrite_fn ());
1249 * This command clears all the In-band OAM (iOAM) features enabled by
1250 * the '<em>set ioam rewrite</em>' command. Use '<em>show ioam summary</em>' to
1251 * verify the configured settings cleared.
1254 * Example of how to clear iOAM features:
1255 * @cliexcmd{clear ioam rewrite}
1257 VLIB_CLI_COMMAND (ip6_clear_ioam_rewrite_cmd, static) = {
1258 .path = "clear ioam rewrite",
1259 .short_help = "clear ioam rewrite",
1260 .function = clear_ioam_rewrite_command_fn,
1264 ip6_ioam_enable (int has_trace_option, int has_pot_option,
1265 int has_seqno_option, int has_analyse_option)
1268 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1269 rv = ip6_ioam_set_rewrite (&hm->rewrite, has_trace_option,
1270 has_pot_option, has_seqno_option);
1275 if (has_trace_option)
1277 hm->has_trace_option = has_trace_option;
1278 if (hm->config_handler[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST])
1279 hm->config_handler[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] (NULL,
1285 hm->has_pot_option = has_pot_option;
1286 if (hm->config_handler[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT])
1287 hm->config_handler[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT] (NULL,
1290 hm->has_analyse_option = has_analyse_option;
1291 if (has_seqno_option)
1293 hm->has_seqno_option = has_seqno_option;
1294 if (hm->config_handler[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE])
1296 hm->config_handler[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE] ((void *)
1297 &has_analyse_option,
1304 return clib_error_return_code (0, rv, 0,
1305 "ip6_ioam_set_rewrite returned %d", rv);
1312 static clib_error_t *
1313 ip6_set_ioam_rewrite_command_fn (vlib_main_t * vm,
1314 unformat_input_t * input,
1315 vlib_cli_command_t * cmd)
1317 int has_trace_option = 0;
1318 int has_pot_option = 0;
1319 int has_seqno_option = 0;
1320 int has_analyse_option = 0;
1321 clib_error_t *rv = 0;
1323 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1325 if (unformat (input, "trace"))
1326 has_trace_option = 1;
1327 else if (unformat (input, "pot"))
1329 else if (unformat (input, "seqno"))
1330 has_seqno_option = 1;
1331 else if (unformat (input, "analyse"))
1332 has_analyse_option = 1;
1338 rv = ip6_ioam_enable (has_trace_option, has_pot_option,
1339 has_seqno_option, has_analyse_option);
1345 * This command is used to enable In-band OAM (iOAM) features on IPv6.
1346 * '<em>trace</em>' is used to enable iOAM trace feature. '<em>pot</em>' is used to
1347 * enable the Proof Of Transit feature. '<em>ppc</em>' is used to indicate the
1348 * Per Packet Counter feature for Edge to Edge processing. '<em>ppc</em>' is
1349 * used to indicate if this node is an '<em>encap</em>' node (iOAM edge node
1350 * where packet enters iOAM domain), a '<em>decap</em>' node (iOAM edge node
1351 * where packet leaves iOAM domain) or '<em>none</em>' (iOAM node where packet
1352 * is in-transit through the iOAM domain). '<em>ppc</em>' can only be set if
1353 * '<em>trace</em>' or '<em>pot</em>' is enabled.
1355 * Use '<em>clear ioam rewrite</em>' to disable all features enabled by this
1356 * command. Use '<em>show ioam summary</em>' to verify the configured settings.
1359 * Example of how to enable trace and pot with ppc set to encap:
1360 * @cliexcmd{set ioam rewrite trace pot ppc encap}
1362 VLIB_CLI_COMMAND (ip6_set_ioam_rewrite_cmd, static) = {
1363 .path = "set ioam rewrite",
1364 .short_help = "set ioam [trace] [pot] [seqno] [analyse]",
1365 .function = ip6_set_ioam_rewrite_command_fn,
1368 static clib_error_t *
1369 ip6_show_ioam_summary_cmd_fn (vlib_main_t * vm,
1370 unformat_input_t * input,
1371 vlib_cli_command_t * cmd)
1373 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1377 if (!is_zero_ip6_address (&hm->adj))
1379 s = format (s, " REWRITE FLOW CONFIGS - \n");
1380 s = format (s, " Destination Address : %U\n",
1381 format_ip6_address, &hm->adj, sizeof (ip6_address_t));
1383 format (s, " Flow operation : %d (%s)\n",
1386 IOAM_HBYH_ADD) ? "Add" : ((hm->ioam_flag ==
1387 IOAM_HBYH_MOD) ? "Mod" : "Pop"));
1391 s = format (s, " REWRITE FLOW CONFIGS - Not configured\n");
1395 s = format (s, " TRACE OPTION - %d (%s)\n",
1396 hm->has_trace_option,
1397 (hm->has_trace_option ? "Enabled" : "Disabled"));
1398 if (hm->has_trace_option)
1401 "Try 'show ioam trace and show ioam-trace profile' for more information\n");
1404 s = format (s, " POT OPTION - %d (%s)\n",
1406 (hm->has_pot_option ? "Enabled" : "Disabled"));
1407 if (hm->has_pot_option)
1410 "Try 'show ioam pot and show pot profile' for more information\n");
1412 s = format (s, " EDGE TO EDGE - SeqNo OPTION - %d (%s)\n",
1413 hm->has_seqno_option,
1414 hm->has_seqno_option ? "Enabled" : "Disabled");
1415 if (hm->has_seqno_option)
1416 s = format (s, "Try 'show ioam e2e' for more information\n");
1418 s = format (s, " iOAM Analyse OPTION - %d (%s)\n",
1419 hm->has_analyse_option,
1420 hm->has_analyse_option ? "Enabled" : "Disabled");
1422 vlib_cli_output (vm, "%v", s);
1428 * This command displays the current configuration data for In-band
1432 * Example to show the iOAM configuration:
1433 * @cliexstart{show ioam summary}
1434 * REWRITE FLOW CONFIGS -
1435 * Destination Address : ff02::1
1436 * Flow operation : 2 (Pop)
1437 * TRACE OPTION - 1 (Enabled)
1438 * Try 'show ioam trace and show ioam-trace profile' for more information
1439 * POT OPTION - 1 (Enabled)
1440 * Try 'show ioam pot and show pot profile' for more information
1441 * EDGE TO EDGE - PPC OPTION - 1 (Encap)
1444 VLIB_CLI_COMMAND (ip6_show_ioam_run_cmd, static) = {
1445 .path = "show ioam summary",
1446 .short_help = "show ioam summary",
1447 .function = ip6_show_ioam_summary_cmd_fn,
1451 vnet_register_ioam_end_of_path_callback (void *cb)
1453 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1455 hm->ioam_end_of_path_cb = cb;
1458 #endif /* CLIB_MARCH_VARIANT */
1460 * fd.io coding-style-patch-verification: ON
1463 * eval: (c-set-style "gnu")