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;
442 VLIB_REGISTER_NODE (ip6_add_hop_by_hop_node) = /* *INDENT-OFF* */
444 .name = "ip6-add-hop-by-hop",
445 .vector_size = sizeof (u32),
446 .format_trace = format_ip6_add_hop_by_hop_trace,
447 .type = VLIB_NODE_TYPE_INTERNAL,
448 .n_errors = ARRAY_LEN (ip6_add_hop_by_hop_error_strings),
449 .error_strings = ip6_add_hop_by_hop_error_strings,
450 /* See ip/lookup.h */
451 .n_next_nodes = IP6_HBYH_IOAM_INPUT_N_NEXT,
453 #define _(s,n) [IP6_HBYH_IOAM_INPUT_NEXT_##s] = n,
454 foreach_ip6_hbyh_ioam_input_next
460 /* The main h-b-h tracer was already invoked, no need to do much here */
464 } ip6_pop_hop_by_hop_trace_t;
466 /* packet trace format function */
468 format_ip6_pop_hop_by_hop_trace (u8 * s, va_list * args)
470 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
471 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
472 ip6_pop_hop_by_hop_trace_t *t =
473 va_arg (*args, ip6_pop_hop_by_hop_trace_t *);
475 s = format (s, "IP6_POP_HOP_BY_HOP: next index %d", t->next_index);
479 #ifndef CLIB_MARCH_VARIANT
481 ip6_hbh_pop_register_option (u8 option,
482 int options (vlib_buffer_t * b,
484 ip6_hop_by_hop_option_t * opt))
486 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
488 ASSERT ((u32) option < ARRAY_LEN (hm->pop_options));
490 /* Already registered */
491 if (hm->pop_options[option])
494 hm->pop_options[option] = options;
500 ip6_hbh_pop_unregister_option (u8 option)
502 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
504 ASSERT ((u32) option < ARRAY_LEN (hm->pop_options));
507 if (!hm->pop_options[option])
510 hm->pop_options[option] = NULL;
513 #endif /* CLIB_MARCH_VARIANT */
515 extern vlib_node_registration_t ip6_pop_hop_by_hop_node;
517 #define foreach_ip6_pop_hop_by_hop_error \
518 _(PROCESSED, "Pkts w/ removed ip6 hop-by-hop options") \
519 _(NO_HOHO, "Pkts w/ no ip6 hop-by-hop options") \
520 _(OPTION_FAILED, "ip6 pop hop-by-hop failed to process")
524 #define _(sym,str) IP6_POP_HOP_BY_HOP_ERROR_##sym,
525 foreach_ip6_pop_hop_by_hop_error
527 IP6_POP_HOP_BY_HOP_N_ERROR,
528 } ip6_pop_hop_by_hop_error_t;
530 static char *ip6_pop_hop_by_hop_error_strings[] = {
531 #define _(sym,string) string,
532 foreach_ip6_pop_hop_by_hop_error
537 ioam_pop_hop_by_hop_processing (vlib_main_t * vm,
539 ip6_hop_by_hop_header_t * hbh0,
542 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
543 ip6_hop_by_hop_option_t *opt0, *limit0;
549 opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
550 limit0 = (ip6_hop_by_hop_option_t *)
551 ((u8 *) hbh0 + ((hbh0->length + 1) << 3));
553 /* Scan the set of h-b-h options, process ones that we understand */
554 while (opt0 < limit0)
560 opt0 = (ip6_hop_by_hop_option_t *) ((u8 *) opt0) + 1;
565 if (hm->pop_options[type0])
567 if ((*hm->pop_options[type0]) (b, ip0, opt0) < 0)
569 vlib_node_increment_counter (vm,
570 ip6_pop_hop_by_hop_node.index,
571 IP6_POP_HOP_BY_HOP_ERROR_OPTION_FAILED,
577 (ip6_hop_by_hop_option_t *) (((u8 *) opt0) + opt0->length +
578 sizeof (ip6_hop_by_hop_option_t));
582 VLIB_NODE_FN (ip6_pop_hop_by_hop_node) (vlib_main_t * vm,
583 vlib_node_runtime_t * node,
584 vlib_frame_t * frame)
586 u32 n_left_from, *from, *to_next;
587 ip_lookup_next_t next_index;
591 from = vlib_frame_vector_args (frame);
592 n_left_from = frame->n_vectors;
593 next_index = node->cached_next_index;
595 while (n_left_from > 0)
599 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
601 while (n_left_from >= 4 && n_left_to_next >= 2)
604 vlib_buffer_t *b0, *b1;
606 u32 adj_index0, adj_index1;
607 ip6_header_t *ip0, *ip1;
608 ip_adjacency_t *adj0, *adj1;
609 ip6_hop_by_hop_header_t *hbh0, *hbh1;
610 u64 *copy_dst0, *copy_src0, *copy_dst1, *copy_src1;
613 /* Prefetch next iteration. */
615 vlib_buffer_t *p2, *p3;
617 p2 = vlib_get_buffer (vm, from[2]);
618 p3 = vlib_get_buffer (vm, from[3]);
620 vlib_prefetch_buffer_header (p2, LOAD);
621 vlib_prefetch_buffer_header (p3, LOAD);
623 CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
624 CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
627 /* speculatively enqueue b0 and b1 to the current next frame */
628 to_next[0] = bi0 = from[0];
629 to_next[1] = bi1 = from[1];
635 b0 = vlib_get_buffer (vm, bi0);
636 b1 = vlib_get_buffer (vm, bi1);
638 /* $$$$$ Dual loop: process 2 x packets here $$$$$ */
639 ip0 = vlib_buffer_get_current (b0);
640 ip1 = vlib_buffer_get_current (b1);
641 adj_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
642 adj_index1 = vnet_buffer (b1)->ip.adj_index[VLIB_TX];
643 adj0 = adj_get (adj_index0);
644 adj1 = adj_get (adj_index1);
646 next0 = adj0->lookup_next_index;
647 next1 = adj1->lookup_next_index;
649 hbh0 = (ip6_hop_by_hop_header_t *) (ip0 + 1);
650 hbh1 = (ip6_hop_by_hop_header_t *) (ip1 + 1);
652 ioam_pop_hop_by_hop_processing (vm, ip0, hbh0, b0);
653 ioam_pop_hop_by_hop_processing (vm, ip1, hbh1, b1);
655 vlib_buffer_advance (b0, (hbh0->length + 1) << 3);
656 vlib_buffer_advance (b1, (hbh1->length + 1) << 3);
658 new_l0 = clib_net_to_host_u16 (ip0->payload_length) -
659 ((hbh0->length + 1) << 3);
660 new_l1 = clib_net_to_host_u16 (ip1->payload_length) -
661 ((hbh1->length + 1) << 3);
663 ip0->payload_length = clib_host_to_net_u16 (new_l0);
664 ip1->payload_length = clib_host_to_net_u16 (new_l1);
666 ip0->protocol = hbh0->protocol;
667 ip1->protocol = hbh1->protocol;
669 copy_src0 = (u64 *) ip0;
670 copy_src1 = (u64 *) ip1;
671 copy_dst0 = copy_src0 + (hbh0->length + 1);
672 copy_dst0[4] = copy_src0[4];
673 copy_dst0[3] = copy_src0[3];
674 copy_dst0[2] = copy_src0[2];
675 copy_dst0[1] = copy_src0[1];
676 copy_dst0[0] = copy_src0[0];
677 copy_dst1 = copy_src1 + (hbh1->length + 1);
678 copy_dst1[4] = copy_src1[4];
679 copy_dst1[3] = copy_src1[3];
680 copy_dst1[2] = copy_src1[2];
681 copy_dst1[1] = copy_src1[1];
682 copy_dst1[0] = copy_src1[0];
684 /* $$$$$ End of processing 2 x packets $$$$$ */
686 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
688 if (b0->flags & VLIB_BUFFER_IS_TRACED)
690 ip6_pop_hop_by_hop_trace_t *t =
691 vlib_add_trace (vm, node, b0, sizeof (*t));
692 t->next_index = next0;
694 if (b1->flags & VLIB_BUFFER_IS_TRACED)
696 ip6_pop_hop_by_hop_trace_t *t =
697 vlib_add_trace (vm, node, b1, sizeof (*t));
698 t->next_index = next1;
702 /* verify speculative enqueues, maybe switch current next frame */
703 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
704 to_next, n_left_to_next,
705 bi0, bi1, next0, next1);
708 while (n_left_from > 0 && n_left_to_next > 0)
715 ip_adjacency_t *adj0;
716 ip6_hop_by_hop_header_t *hbh0;
717 u64 *copy_dst0, *copy_src0;
720 /* speculatively enqueue b0 to the current next frame */
728 b0 = vlib_get_buffer (vm, bi0);
730 ip0 = vlib_buffer_get_current (b0);
731 adj_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
732 adj0 = adj_get (adj_index0);
734 /* Default use the next_index from the adjacency. */
735 next0 = adj0->lookup_next_index;
737 /* Perfectly normal to end up here w/ out h-b-h header */
738 hbh0 = (ip6_hop_by_hop_header_t *) (ip0 + 1);
740 /* TODO:Temporarily doing it here.. do this validation in end_of_path_cb */
741 ioam_pop_hop_by_hop_processing (vm, ip0, hbh0, b0);
742 /* Pop the trace data */
743 vlib_buffer_advance (b0, (hbh0->length + 1) << 3);
744 new_l0 = clib_net_to_host_u16 (ip0->payload_length) -
745 ((hbh0->length + 1) << 3);
746 ip0->payload_length = clib_host_to_net_u16 (new_l0);
747 ip0->protocol = hbh0->protocol;
748 copy_src0 = (u64 *) ip0;
749 copy_dst0 = copy_src0 + (hbh0->length + 1);
750 copy_dst0[4] = copy_src0[4];
751 copy_dst0[3] = copy_src0[3];
752 copy_dst0[2] = copy_src0[2];
753 copy_dst0[1] = copy_src0[1];
754 copy_dst0[0] = copy_src0[0];
757 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
758 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
760 ip6_pop_hop_by_hop_trace_t *t =
761 vlib_add_trace (vm, node, b0, sizeof (*t));
762 t->next_index = next0;
765 /* verify speculative enqueue, maybe switch current next frame */
766 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
767 to_next, n_left_to_next,
771 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
774 vlib_node_increment_counter (vm, ip6_pop_hop_by_hop_node.index,
775 IP6_POP_HOP_BY_HOP_ERROR_PROCESSED, processed);
776 vlib_node_increment_counter (vm, ip6_pop_hop_by_hop_node.index,
777 IP6_POP_HOP_BY_HOP_ERROR_NO_HOHO, no_header);
778 return frame->n_vectors;
782 VLIB_REGISTER_NODE (ip6_pop_hop_by_hop_node) =
784 .name = "ip6-pop-hop-by-hop",
785 .vector_size = sizeof (u32),
786 .format_trace = format_ip6_pop_hop_by_hop_trace,
787 .type = VLIB_NODE_TYPE_INTERNAL,
788 .sibling_of = "ip6-lookup",
789 .n_errors = ARRAY_LEN (ip6_pop_hop_by_hop_error_strings),
790 .error_strings = ip6_pop_hop_by_hop_error_strings,
791 /* See ip/lookup.h */
800 } ip6_local_hop_by_hop_trace_t;
802 #ifndef CLIB_MARCH_VARIANT
804 /* packet trace format function */
806 format_ip6_local_hop_by_hop_trace (u8 * s, va_list * args)
808 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
809 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
810 ip6_local_hop_by_hop_trace_t *t =
811 va_arg (*args, ip6_local_hop_by_hop_trace_t *);
813 s = format (s, "IP6_LOCAL_HOP_BY_HOP: protocol %d, next index %d\n",
814 t->protocol, t->next_index);
818 vlib_node_registration_t ip6_local_hop_by_hop_node;
820 #endif /* CLIB_MARCH_VARIANT */
822 #define foreach_ip6_local_hop_by_hop_error \
823 _(UNKNOWN, "Unknown protocol ip6 local h-b-h packets dropped") \
824 _(OK, "Good ip6 local h-b-h packets")
828 #define _(sym,str) IP6_LOCAL_HOP_BY_HOP_ERROR_##sym,
829 foreach_ip6_local_hop_by_hop_error
831 IP6_LOCAL_HOP_BY_HOP_N_ERROR,
832 } ip6_local_hop_by_hop_error_t;
834 #ifndef CLIB_MARCH_VARIANT
835 static char *ip6_local_hop_by_hop_error_strings[] = {
836 #define _(sym,string) string,
837 foreach_ip6_local_hop_by_hop_error
840 #endif /* CLIB_MARCH_VARIANT */
844 IP6_LOCAL_HOP_BY_HOP_NEXT_DROP,
845 IP6_LOCAL_HOP_BY_HOP_N_NEXT,
846 } ip6_local_hop_by_hop_next_t;
849 ip6_local_hop_by_hop_inline (vlib_main_t * vm,
850 vlib_node_runtime_t * node, vlib_frame_t * frame,
853 u32 n_left_from, *from;
854 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
855 u16 nexts[VLIB_FRAME_SIZE], *next;
857 u32 unknown_proto_error = node->errors[IP6_LOCAL_HOP_BY_HOP_ERROR_UNKNOWN];
858 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
860 /* Note: there is only one of these */
861 ip6_local_hop_by_hop_runtime_t *rt = hm->ip6_local_hbh_runtime;
863 from = vlib_frame_vector_args (frame);
864 n_left_from = frame->n_vectors;
866 vlib_get_buffers (vm, from, bufs, n_left_from);
870 while (n_left_from >= 4)
872 ip6_header_t *ip0, *ip1, *ip2, *ip3;
873 u8 *hbh0, *hbh1, *hbh2, *hbh3;
875 /* Prefetch next iteration. */
876 if (PREDICT_TRUE (n_left_from >= 8))
878 vlib_prefetch_buffer_header (b[4], STORE);
879 vlib_prefetch_buffer_header (b[5], STORE);
880 vlib_prefetch_buffer_header (b[6], STORE);
881 vlib_prefetch_buffer_header (b[7], STORE);
882 CLIB_PREFETCH (b[4]->data, CLIB_CACHE_LINE_BYTES, STORE);
883 CLIB_PREFETCH (b[5]->data, CLIB_CACHE_LINE_BYTES, STORE);
884 CLIB_PREFETCH (b[6]->data, CLIB_CACHE_LINE_BYTES, STORE);
885 CLIB_PREFETCH (b[7]->data, CLIB_CACHE_LINE_BYTES, STORE);
889 * Leave current_data pointing at the IP header.
890 * It's reasonably likely that any registered handler
891 * will want to know where to find the ip6 header.
893 ip0 = vlib_buffer_get_current (b[0]);
894 ip1 = vlib_buffer_get_current (b[1]);
895 ip2 = vlib_buffer_get_current (b[2]);
896 ip3 = vlib_buffer_get_current (b[3]);
898 /* Look at hop-by-hop header */
899 hbh0 = ip6_next_header (ip0);
900 hbh1 = ip6_next_header (ip1);
901 hbh2 = ip6_next_header (ip2);
902 hbh3 = ip6_next_header (ip3);
905 * ... to find the next header type and see if we
906 * have a handler for it...
908 next[0] = rt->next_index_by_protocol[*hbh0];
909 next[1] = rt->next_index_by_protocol[*hbh1];
910 next[2] = rt->next_index_by_protocol[*hbh2];
911 next[3] = rt->next_index_by_protocol[*hbh3];
913 b[0]->error = unknown_proto_error;
914 b[1]->error = unknown_proto_error;
915 b[2]->error = unknown_proto_error;
916 b[3]->error = unknown_proto_error;
918 /* Account for non-drop pkts */
926 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
928 ip6_local_hop_by_hop_trace_t *t =
929 vlib_add_trace (vm, node, b[0], sizeof (*t));
930 t->next_index = next[0];
933 if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
935 ip6_local_hop_by_hop_trace_t *t =
936 vlib_add_trace (vm, node, b[1], sizeof (*t));
937 t->next_index = next[1];
940 if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
942 ip6_local_hop_by_hop_trace_t *t =
943 vlib_add_trace (vm, node, b[2], sizeof (*t));
944 t->next_index = next[2];
947 if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
949 ip6_local_hop_by_hop_trace_t *t =
950 vlib_add_trace (vm, node, b[3], sizeof (*t));
951 t->next_index = next[3];
961 while (n_left_from > 0)
966 ip0 = vlib_buffer_get_current (b[0]);
968 hbh0 = ip6_next_header (ip0);
970 next[0] = rt->next_index_by_protocol[*hbh0];
972 b[0]->error = unknown_proto_error;
977 if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
979 ip6_local_hop_by_hop_trace_t *t =
980 vlib_add_trace (vm, node, b[0], sizeof (*t));
981 t->next_index = next[0];
991 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
993 vlib_node_increment_counter (vm, node->node_index,
994 IP6_LOCAL_HOP_BY_HOP_ERROR_OK, ok);
995 return frame->n_vectors;
998 VLIB_NODE_FN (ip6_local_hop_by_hop_node) (vlib_main_t * vm,
999 vlib_node_runtime_t * node,
1000 vlib_frame_t * frame)
1002 if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
1003 return ip6_local_hop_by_hop_inline (vm, node, frame, 1 /* is_trace */ );
1005 return ip6_local_hop_by_hop_inline (vm, node, frame, 0 /* is_trace */ );
1008 #ifndef CLIB_MARCH_VARIANT
1010 VLIB_REGISTER_NODE (ip6_local_hop_by_hop_node) =
1012 .name = "ip6-local-hop-by-hop",
1013 .vector_size = sizeof (u32),
1014 .format_trace = format_ip6_local_hop_by_hop_trace,
1015 .type = VLIB_NODE_TYPE_INTERNAL,
1017 .n_errors = ARRAY_LEN(ip6_local_hop_by_hop_error_strings),
1018 .error_strings = ip6_local_hop_by_hop_error_strings,
1020 .n_next_nodes = IP6_LOCAL_HOP_BY_HOP_N_NEXT,
1022 /* edit / add dispositions here */
1025 [IP6_LOCAL_HOP_BY_HOP_NEXT_DROP] = "error-drop",
1031 show_ip6_hbh_command_fn (vlib_main_t * vm,
1032 unformat_input_t * input, vlib_cli_command_t * cmd)
1036 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1037 ip6_local_hop_by_hop_runtime_t *rt = hm->ip6_local_hbh_runtime;
1038 vlib_node_t *n = vlib_get_node (vm, ip6_local_hop_by_hop_node.index);
1040 vlib_cli_output (vm, "%-6s%s", "Proto", "Node Name");
1042 for (i = 0; i < ARRAY_LEN (rt->next_index_by_protocol); i++)
1044 if ((next_index = rt->next_index_by_protocol[i]))
1046 u32 next_node_index = n->next_nodes[next_index];
1047 vlib_node_t *next_n = vlib_get_node (vm, next_node_index);
1048 vlib_cli_output (vm, "[%3d] %v", i, next_n->name);
1056 * Display the set of ip6 local hop-by-hop next protocol handler nodes
1059 * Display ip6 local hop-by-hop next protocol handler nodes
1060 * @cliexcmd{show ip6 hbh}
1063 VLIB_CLI_COMMAND (show_ip6_hbh, static) = {
1064 .path = "show ip6 hbh",
1065 .short_help = "show ip6 hbh",
1066 .function = show_ip6_hbh_command_fn,
1071 #endif /* CLIB_MARCH_VARIANT */
1074 #ifndef CLIB_MARCH_VARIANT
1075 static clib_error_t *
1076 ip6_hop_by_hop_ioam_init (vlib_main_t * vm)
1078 clib_error_t *error;
1079 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1081 if ((error = vlib_call_init_function (vm, ip_main_init)))
1084 if ((error = vlib_call_init_function (vm, ip6_lookup_init)))
1088 hm->vnet_main = vnet_get_main ();
1089 hm->unix_time_0 = (u32) time (0); /* Store starting time */
1090 hm->vlib_time_0 = vlib_time_now (vm);
1091 hm->ioam_flag = IOAM_HBYH_MOD;
1092 clib_memset (hm->add_options, 0, sizeof (hm->add_options));
1093 clib_memset (hm->pop_options, 0, sizeof (hm->pop_options));
1094 clib_memset (hm->options_size, 0, sizeof (hm->options_size));
1096 vnet_classify_register_unformat_opaque_index_fn (unformat_opaque_ioam);
1097 hm->ip6_local_hbh_runtime = clib_mem_alloc_aligned
1098 (sizeof (ip6_local_hop_by_hop_runtime_t), CLIB_CACHE_LINE_BYTES);
1100 memset (hm->ip6_local_hbh_runtime, 0,
1101 sizeof (ip6_local_hop_by_hop_runtime_t));
1103 ip6_register_protocol (IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS,
1104 ip6_local_hop_by_hop_node.index);
1109 VLIB_INIT_FUNCTION (ip6_hop_by_hop_ioam_init) =
1111 .runs_after = VLIB_INITS("ip_main_init", "ip6_lookup_init"),
1116 ip6_local_hop_by_hop_register_protocol (u32 protocol, u32 node_index)
1118 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1119 vlib_main_t *vm = hm->vlib_main;
1120 ip6_local_hop_by_hop_runtime_t *local_hbh_runtime
1121 = hm->ip6_local_hbh_runtime;
1124 ASSERT (protocol < ARRAY_LEN (local_hbh_runtime->next_index_by_protocol));
1126 old_next_index = local_hbh_runtime->next_index_by_protocol[protocol];
1128 local_hbh_runtime->next_index_by_protocol[protocol] =
1129 vlib_node_add_next (vm, ip6_local_hop_by_hop_node.index, node_index);
1131 /* Someone will eventually do this. Trust me. */
1132 if (old_next_index &&
1133 (old_next_index != local_hbh_runtime->next_index_by_protocol[protocol]))
1134 clib_warning ("WARNING: replaced next index for protocol %d", protocol);
1138 ip6_ioam_set_rewrite (u8 ** rwp, int has_trace_option,
1139 int has_pot_option, int has_seqno_option)
1141 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1144 ip6_hop_by_hop_header_t *hbh;
1146 u8 *trace_data_size = NULL;
1147 u8 *pot_data_size = NULL;
1151 if (has_trace_option == 0 && has_pot_option == 0)
1154 /* Work out how much space we need */
1155 size = sizeof (ip6_hop_by_hop_header_t);
1157 //if (has_trace_option && hm->get_sizeof_options[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] != 0)
1158 if (has_trace_option
1159 && hm->options_size[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] != 0)
1161 size += hm->options_size[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST];
1164 && hm->add_options[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT] != 0)
1166 size += hm->options_size[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT];
1169 if (has_seqno_option)
1171 size += hm->options_size[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE];
1174 /* Round to a multiple of 8 octets */
1175 rnd_size = (size + 7) & ~7;
1177 /* allocate it, zero-fill / pad by construction */
1178 vec_validate (rewrite, rnd_size - 1);
1180 hbh = (ip6_hop_by_hop_header_t *) rewrite;
1181 /* Length of header in 8 octet units, not incl first 8 octets */
1182 hbh->length = (rnd_size >> 3) - 1;
1183 current = (u8 *) (hbh + 1);
1185 if (has_trace_option
1186 && hm->add_options[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] != 0)
1188 if (0 != (hm->options_size[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST]))
1191 &hm->options_size[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST];
1193 hm->add_options[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] (current,
1195 current += *trace_data_size;
1199 && hm->add_options[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT] != 0)
1202 &hm->options_size[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT];
1204 hm->add_options[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT] (current,
1206 current += *pot_data_size;
1209 if (has_seqno_option &&
1210 (hm->add_options[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE] != 0))
1212 if (0 == hm->add_options[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE] (current,
1215 [HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE])))
1216 current += hm->options_size[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE];
1224 clear_ioam_rewrite_fn (void)
1226 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1228 vec_free (hm->rewrite);
1230 hm->has_trace_option = 0;
1231 hm->has_pot_option = 0;
1232 hm->has_seqno_option = 0;
1233 hm->has_analyse_option = 0;
1234 if (hm->config_handler[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST])
1235 hm->config_handler[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] (NULL, 1);
1237 if (hm->config_handler[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT])
1238 hm->config_handler[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT] (NULL, 1);
1240 if (hm->config_handler[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE])
1242 hm->config_handler[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE] ((void *)
1243 &hm->has_analyse_option,
1251 clear_ioam_rewrite_command_fn (vlib_main_t * vm,
1252 unformat_input_t * input,
1253 vlib_cli_command_t * cmd)
1255 return (clear_ioam_rewrite_fn ());
1259 * This command clears all the In-band OAM (iOAM) features enabled by
1260 * the '<em>set ioam rewrite</em>' command. Use '<em>show ioam summary</em>' to
1261 * verify the configured settings cleared.
1264 * Example of how to clear iOAM features:
1265 * @cliexcmd{clear ioam rewrite}
1268 VLIB_CLI_COMMAND (ip6_clear_ioam_rewrite_cmd, static) = {
1269 .path = "clear ioam rewrite",
1270 .short_help = "clear ioam rewrite",
1271 .function = clear_ioam_rewrite_command_fn,
1276 ip6_ioam_enable (int has_trace_option, int has_pot_option,
1277 int has_seqno_option, int has_analyse_option)
1280 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1281 rv = ip6_ioam_set_rewrite (&hm->rewrite, has_trace_option,
1282 has_pot_option, has_seqno_option);
1287 if (has_trace_option)
1289 hm->has_trace_option = has_trace_option;
1290 if (hm->config_handler[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST])
1291 hm->config_handler[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] (NULL,
1297 hm->has_pot_option = has_pot_option;
1298 if (hm->config_handler[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT])
1299 hm->config_handler[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT] (NULL,
1302 hm->has_analyse_option = has_analyse_option;
1303 if (has_seqno_option)
1305 hm->has_seqno_option = has_seqno_option;
1306 if (hm->config_handler[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE])
1308 hm->config_handler[HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE] ((void *)
1309 &has_analyse_option,
1316 return clib_error_return_code (0, rv, 0,
1317 "ip6_ioam_set_rewrite returned %d", rv);
1324 static clib_error_t *
1325 ip6_set_ioam_rewrite_command_fn (vlib_main_t * vm,
1326 unformat_input_t * input,
1327 vlib_cli_command_t * cmd)
1329 int has_trace_option = 0;
1330 int has_pot_option = 0;
1331 int has_seqno_option = 0;
1332 int has_analyse_option = 0;
1333 clib_error_t *rv = 0;
1335 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1337 if (unformat (input, "trace"))
1338 has_trace_option = 1;
1339 else if (unformat (input, "pot"))
1341 else if (unformat (input, "seqno"))
1342 has_seqno_option = 1;
1343 else if (unformat (input, "analyse"))
1344 has_analyse_option = 1;
1350 rv = ip6_ioam_enable (has_trace_option, has_pot_option,
1351 has_seqno_option, has_analyse_option);
1357 * This command is used to enable In-band OAM (iOAM) features on IPv6.
1358 * '<em>trace</em>' is used to enable iOAM trace feature. '<em>pot</em>' is used to
1359 * enable the Proof Of Transit feature. '<em>ppc</em>' is used to indicate the
1360 * Per Packet Counter feature for Edge to Edge processing. '<em>ppc</em>' is
1361 * used to indicate if this node is an '<em>encap</em>' node (iOAM edge node
1362 * where packet enters iOAM domain), a '<em>decap</em>' node (iOAM edge node
1363 * where packet leaves iOAM domain) or '<em>none</em>' (iOAM node where packet
1364 * is in-transit through the iOAM domain). '<em>ppc</em>' can only be set if
1365 * '<em>trace</em>' or '<em>pot</em>' is enabled.
1367 * Use '<em>clear ioam rewrite</em>' to disable all features enabled by this
1368 * command. Use '<em>show ioam summary</em>' to verify the configured settings.
1371 * Example of how to enable trace and pot with ppc set to encap:
1372 * @cliexcmd{set ioam rewrite trace pot ppc encap}
1375 VLIB_CLI_COMMAND (ip6_set_ioam_rewrite_cmd, static) = {
1376 .path = "set ioam rewrite",
1377 .short_help = "set ioam [trace] [pot] [seqno] [analyse]",
1378 .function = ip6_set_ioam_rewrite_command_fn,
1382 static clib_error_t *
1383 ip6_show_ioam_summary_cmd_fn (vlib_main_t * vm,
1384 unformat_input_t * input,
1385 vlib_cli_command_t * cmd)
1387 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1391 if (!is_zero_ip6_address (&hm->adj))
1393 s = format (s, " REWRITE FLOW CONFIGS - \n");
1394 s = format (s, " Destination Address : %U\n",
1395 format_ip6_address, &hm->adj, sizeof (ip6_address_t));
1397 format (s, " Flow operation : %d (%s)\n",
1400 IOAM_HBYH_ADD) ? "Add" : ((hm->ioam_flag ==
1401 IOAM_HBYH_MOD) ? "Mod" : "Pop"));
1405 s = format (s, " REWRITE FLOW CONFIGS - Not configured\n");
1409 s = format (s, " TRACE OPTION - %d (%s)\n",
1410 hm->has_trace_option,
1411 (hm->has_trace_option ? "Enabled" : "Disabled"));
1412 if (hm->has_trace_option)
1415 "Try 'show ioam trace and show ioam-trace profile' for more information\n");
1418 s = format (s, " POT OPTION - %d (%s)\n",
1420 (hm->has_pot_option ? "Enabled" : "Disabled"));
1421 if (hm->has_pot_option)
1424 "Try 'show ioam pot and show pot profile' for more information\n");
1426 s = format (s, " EDGE TO EDGE - SeqNo OPTION - %d (%s)\n",
1427 hm->has_seqno_option,
1428 hm->has_seqno_option ? "Enabled" : "Disabled");
1429 if (hm->has_seqno_option)
1430 s = format (s, "Try 'show ioam e2e' for more information\n");
1432 s = format (s, " iOAM Analyse OPTION - %d (%s)\n",
1433 hm->has_analyse_option,
1434 hm->has_analyse_option ? "Enabled" : "Disabled");
1436 vlib_cli_output (vm, "%v", s);
1442 * This command displays the current configuration data for In-band
1446 * Example to show the iOAM configuration:
1447 * @cliexstart{show ioam summary}
1448 * REWRITE FLOW CONFIGS -
1449 * Destination Address : ff02::1
1450 * Flow operation : 2 (Pop)
1451 * TRACE OPTION - 1 (Enabled)
1452 * Try 'show ioam trace and show ioam-trace profile' for more information
1453 * POT OPTION - 1 (Enabled)
1454 * Try 'show ioam pot and show pot profile' for more information
1455 * EDGE TO EDGE - PPC OPTION - 1 (Encap)
1459 VLIB_CLI_COMMAND (ip6_show_ioam_run_cmd, static) = {
1460 .path = "show ioam summary",
1461 .short_help = "show ioam summary",
1462 .function = ip6_show_ioam_summary_cmd_fn,
1467 vnet_register_ioam_end_of_path_callback (void *cb)
1469 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
1471 hm->ioam_end_of_path_cb = cb;
1474 #endif /* CLIB_MARCH_VARIANT */
1476 * fd.io coding-style-patch-verification: ON
1479 * eval: (c-set-style "gnu")