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Neale Ranns0bfe5d82016-08-25 15:29:12 +01001/*
2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include <vnet/adj/adj.h>
Neale Ranns0bfe5d82016-08-25 15:29:12 +010017#include <vnet/adj/adj_internal.h>
18#include <vnet/adj/adj_glean.h>
19#include <vnet/adj/adj_midchain.h>
Neale Ranns32e1c012016-11-22 17:07:28 +000020#include <vnet/adj/adj_mcast.h>
Neale Ranns88fc83e2017-04-05 08:11:14 -070021#include <vnet/adj/adj_delegate.h>
Neale Ranns0bfe5d82016-08-25 15:29:12 +010022#include <vnet/fib/fib_node_list.h>
23
Neale Ranns0bfe5d82016-08-25 15:29:12 +010024/* Adjacency packet/byte counters indexed by adjacency index. */
25vlib_combined_counter_main_t adjacency_counters;
26
Neale Ranns6c3ebcc2016-10-02 21:20:15 +010027/*
28 * the single adj pool
29 */
30ip_adjacency_t *adj_pool;
31
Neale Ranns9c6a6132017-02-21 05:33:14 -080032/**
33 * @brief Global Config for enabling per-adjacency counters.
34 * By default these are disabled.
35 */
36int adj_per_adj_counters;
37
Neale Ranns0bfe5d82016-08-25 15:29:12 +010038always_inline void
39adj_poison (ip_adjacency_t * adj)
40{
41 if (CLIB_DEBUG > 0)
42 {
Neale Ranns0bfe5d82016-08-25 15:29:12 +010043 memset (adj, 0xfe, sizeof (adj[0]));
Neale Ranns0bfe5d82016-08-25 15:29:12 +010044 }
45}
46
47ip_adjacency_t *
48adj_alloc (fib_protocol_t proto)
49{
50 ip_adjacency_t *adj;
51
Neale Rannsfa5d1982017-02-20 14:19:51 -080052 pool_get_aligned(adj_pool, adj, CLIB_CACHE_LINE_BYTES);
Neale Ranns0bfe5d82016-08-25 15:29:12 +010053
54 adj_poison(adj);
55
56 /* Make sure certain fields are always initialized. */
57 /* Validate adjacency counters. */
58 vlib_validate_combined_counter(&adjacency_counters,
Neale Ranns6c3ebcc2016-10-02 21:20:15 +010059 adj_get_index(adj));
Neale Ranns0bfe5d82016-08-25 15:29:12 +010060
Neale Ranns0bfe5d82016-08-25 15:29:12 +010061 fib_node_init(&adj->ia_node,
62 FIB_NODE_TYPE_ADJ);
Neale Ranns88fc83e2017-04-05 08:11:14 -070063
Neale Ranns0bfe5d82016-08-25 15:29:12 +010064 adj->ia_nh_proto = proto;
Neale Ranns19c68d22016-12-07 15:38:14 +000065 adj->ia_flags = 0;
Neale Ranns88fc83e2017-04-05 08:11:14 -070066 adj->rewrite_header.sw_if_index = ~0;
Neale Ranns8c4611b2017-05-23 03:43:47 -070067 adj->rewrite_header.flags = 0;
Neale Ranns88fc83e2017-04-05 08:11:14 -070068 adj->lookup_next_index = 0;
69 adj->ia_delegates = NULL;
Neale Ranns0bfe5d82016-08-25 15:29:12 +010070
Neale Ranns0f26c5a2017-03-01 15:12:11 -080071 /* lest it become a midchain in the future */
72 memset(&adj->sub_type.midchain.next_dpo, 0,
73 sizeof(adj->sub_type.midchain.next_dpo));
74
Neale Ranns0bfe5d82016-08-25 15:29:12 +010075 return (adj);
76}
77
78static int
79adj_index_is_special (adj_index_t adj_index)
80{
81 if (ADJ_INDEX_INVALID == adj_index)
82 return (!0);
83
84 return (0);
85}
86
87/**
88 * @brief Pretty print helper function for formatting specific adjacencies.
89 * @param s - input string to format
90 * @param args - other args passed to format function such as:
91 * - vnet_main_t
92 * - ip_lookup_main_t
93 * - adj_index
94 */
95u8 *
96format_ip_adjacency (u8 * s, va_list * args)
97{
Neale Rannsb80c5362016-10-08 13:03:40 +010098 format_ip_adjacency_flags_t fiaf;
99 ip_adjacency_t * adj;
100 u32 adj_index;
101
102 adj_index = va_arg (*args, u32);
103 fiaf = va_arg (*args, format_ip_adjacency_flags_t);
104 adj = adj_get(adj_index);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100105
Neale Rannsb80c5362016-10-08 13:03:40 +0100106 switch (adj->lookup_next_index)
107 {
108 case IP_LOOKUP_NEXT_REWRITE:
109 s = format (s, "%U", format_adj_nbr, adj_index, 0);
110 break;
111 case IP_LOOKUP_NEXT_ARP:
112 s = format (s, "%U", format_adj_nbr_incomplete, adj_index, 0);
113 break;
114 case IP_LOOKUP_NEXT_GLEAN:
115 s = format (s, "%U", format_adj_glean, adj_index, 0);
116 break;
117 case IP_LOOKUP_NEXT_MIDCHAIN:
118 s = format (s, "%U", format_adj_midchain, adj_index, 2);
119 break;
Neale Ranns32e1c012016-11-22 17:07:28 +0000120 case IP_LOOKUP_NEXT_MCAST:
121 s = format (s, "%U", format_adj_mcast, adj_index, 0);
122 break;
Neale Ranns0f26c5a2017-03-01 15:12:11 -0800123 case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
124 s = format (s, "%U", format_adj_mcast_midchain, adj_index, 0);
125 break;
Neale Rannsb80c5362016-10-08 13:03:40 +0100126 default:
127 break;
128 }
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100129
Neale Rannsb80c5362016-10-08 13:03:40 +0100130 if (fiaf & FORMAT_IP_ADJACENCY_DETAIL)
131 {
Neale Ranns044183f2017-01-24 01:34:25 -0800132 vlib_counter_t counts;
133
134 vlib_get_combined_counter(&adjacency_counters, adj_index, &counts);
Neale Ranns2303cb12018-02-21 04:57:17 -0800135 s = format (s, "\n counts:[%Ld:%Ld]", counts.packets, counts.bytes);
136 s = format (s, "\n locks:%d", adj->ia_node.fn_locks);
Neale Ranns88fc83e2017-04-05 08:11:14 -0700137 s = format(s, "\n delegates:\n ");
Neale Rannsd79a43c2018-02-19 02:36:19 -0800138 adj_delegate_format(s, adj);
Neale Ranns88fc83e2017-04-05 08:11:14 -0700139
Neale Ranns2303cb12018-02-21 04:57:17 -0800140 s = format(s, "\n children:");
141 if (fib_node_list_get_size(adj->ia_node.fn_children))
142 {
143 s = format(s, "\n ");
144 s = fib_node_children_format(adj->ia_node.fn_children, s);
145 }
Neale Rannsb80c5362016-10-08 13:03:40 +0100146 }
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100147
Neale Rannsb80c5362016-10-08 13:03:40 +0100148 return s;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100149}
150
151/*
152 * adj_last_lock_gone
153 *
154 * last lock/reference to the adj has gone, we no longer need it.
155 */
156static void
157adj_last_lock_gone (ip_adjacency_t *adj)
158{
Neale Rannsb80c5362016-10-08 13:03:40 +0100159 vlib_main_t * vm = vlib_get_main();
160
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100161 ASSERT(0 == fib_node_list_get_size(adj->ia_node.fn_children));
162 ADJ_DBG(adj, "last-lock-gone");
163
Neale Rannsd79a43c2018-02-19 02:36:19 -0800164 adj_delegate_adj_deleted(adj);
Ole Troan793c7fe2018-02-15 16:14:56 +0100165
Neale Rannsb80c5362016-10-08 13:03:40 +0100166 vlib_worker_thread_barrier_sync (vm);
167
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100168 switch (adj->lookup_next_index)
169 {
170 case IP_LOOKUP_NEXT_MIDCHAIN:
171 dpo_reset(&adj->sub_type.midchain.next_dpo);
172 /* FALL THROUGH */
173 case IP_LOOKUP_NEXT_ARP:
174 case IP_LOOKUP_NEXT_REWRITE:
175 /*
176 * complete and incomplete nbr adjs
177 */
Neale Ranns177bbdc2016-11-15 09:46:51 +0000178 adj_nbr_remove(adj_get_index(adj),
179 adj->ia_nh_proto,
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100180 adj->ia_link,
181 &adj->sub_type.nbr.next_hop,
182 adj->rewrite_header.sw_if_index);
183 break;
184 case IP_LOOKUP_NEXT_GLEAN:
185 adj_glean_remove(adj->ia_nh_proto,
186 adj->rewrite_header.sw_if_index);
187 break;
Neale Ranns32e1c012016-11-22 17:07:28 +0000188 case IP_LOOKUP_NEXT_MCAST:
Neale Ranns0f26c5a2017-03-01 15:12:11 -0800189 case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
Neale Ranns32e1c012016-11-22 17:07:28 +0000190 adj_mcast_remove(adj->ia_nh_proto,
191 adj->rewrite_header.sw_if_index);
192 break;
Neale Ranns88fc83e2017-04-05 08:11:14 -0700193 case IP_LOOKUP_NEXT_DROP:
194 case IP_LOOKUP_NEXT_PUNT:
195 case IP_LOOKUP_NEXT_LOCAL:
196 case IP_LOOKUP_NEXT_ICMP_ERROR:
197 case IP_LOOKUP_N_NEXT:
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100198 /*
199 * type not stored in any DB from which we need to remove it
200 */
201 break;
202 }
203
Neale Rannsb80c5362016-10-08 13:03:40 +0100204 vlib_worker_thread_barrier_release(vm);
205
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100206 fib_node_deinit(&adj->ia_node);
Neale Ranns88fc83e2017-04-05 08:11:14 -0700207 ASSERT(0 == vec_len(adj->ia_delegates));
208 vec_free(adj->ia_delegates);
Neale Ranns6c3ebcc2016-10-02 21:20:15 +0100209 pool_put(adj_pool, adj);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100210}
211
Andrew Yourtchenko5f3fcb92017-10-25 05:50:37 -0700212u32
213adj_dpo_get_urpf (const dpo_id_t *dpo)
214{
215 ip_adjacency_t *adj;
216
217 adj = adj_get(dpo->dpoi_index);
218
219 return (adj->rewrite_header.sw_if_index);
220}
221
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100222void
223adj_lock (adj_index_t adj_index)
224{
225 ip_adjacency_t *adj;
226
227 if (adj_index_is_special(adj_index))
228 {
229 return;
230 }
231
232 adj = adj_get(adj_index);
233 ASSERT(adj);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100234
235 ADJ_DBG(adj, "lock");
236 fib_node_lock(&adj->ia_node);
237}
238
239void
240adj_unlock (adj_index_t adj_index)
241{
242 ip_adjacency_t *adj;
243
244 if (adj_index_is_special(adj_index))
245 {
246 return;
247 }
248
249 adj = adj_get(adj_index);
250 ASSERT(adj);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100251
252 ADJ_DBG(adj, "unlock");
253 ASSERT(adj);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100254
255 fib_node_unlock(&adj->ia_node);
256}
257
258u32
259adj_child_add (adj_index_t adj_index,
260 fib_node_type_t child_type,
261 fib_node_index_t child_index)
262{
263 ASSERT(ADJ_INDEX_INVALID != adj_index);
264 if (adj_index_is_special(adj_index))
265 {
266 return (~0);
267 }
268
269 return (fib_node_child_add(FIB_NODE_TYPE_ADJ,
270 adj_index,
271 child_type,
272 child_index));
273}
274
275void
276adj_child_remove (adj_index_t adj_index,
277 u32 sibling_index)
278{
279 if (adj_index_is_special(adj_index))
280 {
281 return;
282 }
283
284 fib_node_child_remove(FIB_NODE_TYPE_ADJ,
285 adj_index,
286 sibling_index);
287}
288
Neale Rannsb069a692017-03-15 12:34:25 -0400289/*
290 * Context for the walk to update the cached feture flags.
291 */
292typedef struct adj_feature_update_t_
293{
294 u8 arc;
295 u8 enable;
296} adj_feature_update_ctx_t;
297
298static adj_walk_rc_t
299adj_feature_update_walk_cb (adj_index_t ai,
300 void *arg)
301{
302 adj_feature_update_ctx_t *ctx = arg;
303 ip_adjacency_t *adj;
304
305 adj = adj_get(ai);
306
307 /*
308 * this ugly mess matches the feature arc that is changing with affected
309 * adjacencies
310 */
311 if (((ctx->arc == ip6_main.lookup_main.output_feature_arc_index) &&
312 (VNET_LINK_IP6 == adj->ia_link)) ||
313 ((ctx->arc == ip4_main.lookup_main.output_feature_arc_index) &&
314 (VNET_LINK_IP4 == adj->ia_link)) ||
315 ((ctx->arc == mpls_main.output_feature_arc_index) &&
316 (VNET_LINK_MPLS == adj->ia_link)))
317 {
318 if (ctx->enable)
319 adj->rewrite_header.flags |= VNET_REWRITE_HAS_FEATURES;
320 else
321 adj->rewrite_header.flags &= ~VNET_REWRITE_HAS_FEATURES;
322 }
323 return (ADJ_WALK_RC_CONTINUE);
324}
325
326void
327adj_feature_update (u32 sw_if_index,
328 u8 arc_index,
329 u8 is_enable)
330{
331 /*
332 * Walk all the adjacencies on the interface to update the cached
333 * 'has-features' flag
334 */
335 adj_feature_update_ctx_t ctx = {
336 .arc = arc_index,
337 .enable = is_enable,
338 };
339 adj_walk (sw_if_index, adj_feature_update_walk_cb, &ctx);
340}
341
Neale Rannsffd78d12018-02-09 06:05:16 -0800342static adj_walk_rc_t
343adj_mtu_update_walk_cb (adj_index_t ai,
344 void *arg)
345{
346 ip_adjacency_t *adj;
347
348 adj = adj_get(ai);
349
350 vnet_rewrite_update_mtu (vnet_get_main(),
351 &adj->rewrite_header);
352
353 return (ADJ_WALK_RC_CONTINUE);
354}
355
356static void
357adj_sw_mtu_update (vnet_main_t * vnm,
358 u32 sw_if_index,
359 void *ctx)
360{
361 /*
362 * Walk all the adjacencies on the interface to update the cached MTU
363 */
364 adj_walk (sw_if_index, adj_mtu_update_walk_cb, NULL);
365}
366
367void
368adj_mtu_update (u32 hw_if_index)
369{
370 /*
371 * Walk all the SW interfaces on the HW interface to update the cached MTU
372 */
373 vnet_hw_interface_walk_sw(vnet_get_main(),
374 hw_if_index,
375 adj_sw_mtu_update,
376 NULL);
377}
378
Neale Rannsb069a692017-03-15 12:34:25 -0400379/**
380 * @brief Walk the Adjacencies on a given interface
381 */
382void
383adj_walk (u32 sw_if_index,
384 adj_walk_cb_t cb,
385 void *ctx)
386{
387 /*
388 * walk all the neighbor adjacencies
389 */
390 fib_protocol_t proto;
391
392 FOR_EACH_FIB_IP_PROTOCOL(proto)
393 {
394 adj_nbr_walk(sw_if_index, proto, cb, ctx);
Neale Ranns0f26c5a2017-03-01 15:12:11 -0800395 adj_mcast_walk(sw_if_index, proto, cb, ctx);
Neale Rannsb069a692017-03-15 12:34:25 -0400396 }
397}
398
Neale Rannsb80c5362016-10-08 13:03:40 +0100399/**
400 * @brief Return the link type of the adjacency
401 */
402vnet_link_t
403adj_get_link_type (adj_index_t ai)
404{
405 const ip_adjacency_t *adj;
406
407 adj = adj_get(ai);
408
409 return (adj->ia_link);
410}
411
412/**
413 * @brief Return the sw interface index of the adjacency.
414 */
415u32
416adj_get_sw_if_index (adj_index_t ai)
417{
418 const ip_adjacency_t *adj;
419
420 adj = adj_get(ai);
421
422 return (adj->rewrite_header.sw_if_index);
423}
424
425/**
Neale Ranns88fc83e2017-04-05 08:11:14 -0700426 * @brief Return true if the adjacency is 'UP', i.e. can be used for forwarding
427 * 0 is down, !0 is up.
428 */
429int
430adj_is_up (adj_index_t ai)
431{
Neale Rannsd79a43c2018-02-19 02:36:19 -0800432 return (adj_bfd_is_up(ai));
Neale Ranns88fc83e2017-04-05 08:11:14 -0700433}
434
435/**
Neale Ranns2e7fbcc2017-03-15 04:22:25 -0700436 * @brief Return the rewrite string of the adjacency
Neale Rannsb80c5362016-10-08 13:03:40 +0100437 */
438const u8*
439adj_get_rewrite (adj_index_t ai)
440{
441 vnet_rewrite_header_t *rw;
442 ip_adjacency_t *adj;
443
444 adj = adj_get(ai);
445 rw = &adj->rewrite_header;
446
447 ASSERT (rw->data_bytes != 0xfefe);
448
449 return (rw->data - rw->data_bytes);
450}
451
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100452static fib_node_t *
453adj_get_node (fib_node_index_t index)
454{
455 ip_adjacency_t *adj;
456
457 adj = adj_get(index);
458
459 return (&adj->ia_node);
460}
461
462#define ADJ_FROM_NODE(_node) \
463 ((ip_adjacency_t*)((char*)_node - STRUCT_OFFSET_OF(ip_adjacency_t, ia_node)))
464
465static void
466adj_node_last_lock_gone (fib_node_t *node)
467{
468 adj_last_lock_gone(ADJ_FROM_NODE(node));
469}
470
471static fib_node_back_walk_rc_t
472adj_back_walk_notify (fib_node_t *node,
473 fib_node_back_walk_ctx_t *ctx)
474{
475 /*
476 * Que pasa. yo soj en el final!
477 */
478 ASSERT(0);
479
480 return (FIB_NODE_BACK_WALK_CONTINUE);
481}
482
483/*
484 * Adjacency's graph node virtual function table
485 */
486static const fib_node_vft_t adj_vft = {
487 .fnv_get = adj_get_node,
488 .fnv_last_lock = adj_node_last_lock_gone,
489 .fnv_back_walk = adj_back_walk_notify,
490};
491
492static clib_error_t *
493adj_module_init (vlib_main_t * vm)
494{
495 fib_node_register_type(FIB_NODE_TYPE_ADJ, &adj_vft);
496
497 adj_nbr_module_init();
498 adj_glean_module_init();
499 adj_midchain_module_init();
Neale Ranns32e1c012016-11-22 17:07:28 +0000500 adj_mcast_module_init();
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100501
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100502 return (NULL);
503}
504
505VLIB_INIT_FUNCTION (adj_module_init);
506
Neale Rannsb80c5362016-10-08 13:03:40 +0100507static clib_error_t *
508adj_show (vlib_main_t * vm,
509 unformat_input_t * input,
510 vlib_cli_command_t * cmd)
511{
512 adj_index_t ai = ADJ_INDEX_INVALID;
513 u32 sw_if_index = ~0;
Neale Ranns9c6a6132017-02-21 05:33:14 -0800514 int summary = 0;
Neale Rannsb80c5362016-10-08 13:03:40 +0100515
516 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
517 {
518 if (unformat (input, "%d", &ai))
519 ;
Neale Ranns9c6a6132017-02-21 05:33:14 -0800520 else if (unformat (input, "sum"))
521 summary = 1;
522 else if (unformat (input, "summary"))
523 summary = 1;
Neale Rannsb80c5362016-10-08 13:03:40 +0100524 else if (unformat (input, "%U",
525 unformat_vnet_sw_interface, vnet_get_main(),
526 &sw_if_index))
527 ;
528 else
529 break;
530 }
531
Neale Ranns9c6a6132017-02-21 05:33:14 -0800532 if (summary)
Neale Rannsb80c5362016-10-08 13:03:40 +0100533 {
Neale Ranns9c6a6132017-02-21 05:33:14 -0800534 vlib_cli_output (vm, "Number of adjacenies: %d", pool_elts(adj_pool));
535 vlib_cli_output (vm, "Per-adjacency counters: %s",
536 (adj_are_counters_enabled() ?
537 "enabled":
538 "disabled"));
Neale Rannsb80c5362016-10-08 13:03:40 +0100539 }
540 else
541 {
Neale Ranns9c6a6132017-02-21 05:33:14 -0800542 if (ADJ_INDEX_INVALID != ai)
543 {
544 if (pool_is_free_index(adj_pool, ai))
Neale Ranns8b37b872016-11-21 12:25:22 +0000545 {
Neale Ranns9c6a6132017-02-21 05:33:14 -0800546 vlib_cli_output (vm, "adjacency %d invalid", ai);
547 return 0;
548 }
Neale Rannsb80c5362016-10-08 13:03:40 +0100549
Neale Ranns9c6a6132017-02-21 05:33:14 -0800550 vlib_cli_output (vm, "[@%d] %U",
551 ai,
552 format_ip_adjacency, ai,
553 FORMAT_IP_ADJACENCY_DETAIL);
554 }
555 else
556 {
557 /* *INDENT-OFF* */
558 pool_foreach_index(ai, adj_pool,
559 ({
560 if (~0 != sw_if_index &&
561 sw_if_index != adj_get_sw_if_index(ai))
562 {
563 }
564 else
565 {
566 vlib_cli_output (vm, "[@%d] %U",
567 ai,
568 format_ip_adjacency, ai,
569 FORMAT_IP_ADJACENCY_NONE);
570 }
571 }));
572 /* *INDENT-ON* */
573 }
574 }
Neale Rannsb80c5362016-10-08 13:03:40 +0100575 return 0;
576}
577
578/*?
579 * Show all adjacencies.
580 * @cliexpar
581 * @cliexstart{sh adj}
582 * [@0]
583 * [@1] glean: loop0
584 * [@2] ipv4 via 1.0.0.2 loop0: IP4: 00:00:22:aa:bb:cc -> 00:00:11:aa:bb:cc
Neale Ranns0f26c5a2017-03-01 15:12:11 -0800585 * [@3] mpls via 1.0.0.2 loop0: MPLS: 00:00:22:aa:bb:cc -> 00:00:11:aa:bb:cc
Neale Rannsb80c5362016-10-08 13:03:40 +0100586 * [@4] ipv4 via 1.0.0.3 loop0: IP4: 00:00:22:aa:bb:cc -> 00:00:11:aa:bb:cc
Neale Ranns0f26c5a2017-03-01 15:12:11 -0800587 * [@5] mpls via 1.0.0.3 loop0: MPLS: 00:00:22:aa:bb:cc -> 00:00:11:aa:bb:cc
Neale Rannsb80c5362016-10-08 13:03:40 +0100588 * @cliexend
589 ?*/
590VLIB_CLI_COMMAND (adj_show_command, static) = {
591 .path = "show adj",
Neale Ranns9c6a6132017-02-21 05:33:14 -0800592 .short_help = "show adj [<adj_index>] [interface] [summary]",
Neale Rannsb80c5362016-10-08 13:03:40 +0100593 .function = adj_show,
594};
Neale Ranns9c6a6132017-02-21 05:33:14 -0800595
596/**
597 * @brief CLI invoked function to enable/disable per-adj counters
598 */
599static clib_error_t *
600adj_cli_counters_set (vlib_main_t * vm,
601 unformat_input_t * input,
602 vlib_cli_command_t * cmd)
603{
604 clib_error_t *error = NULL;
605 int enable = ~0;
606
607 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
608 {
609 if (unformat (input, "enable"))
610 enable = 1;
611 else if (unformat (input, "disable"))
612 enable = 0;
613 else
614 break;
615 }
616
617 if (enable != ~0)
618 {
619 /* user requested something sensible */
620 adj_per_adj_counters = enable;
621 }
622 else
623 {
624 error = clib_error_return (0, "specify 'enable' or 'disable'");
625 }
626
627 return (error);
628}
629
630/*?
631 * Enabe/disble per-adjacency counters. This is optional because it comes with
632 * a non-negligible performance cost.
633 ?*/
634VLIB_CLI_COMMAND (adj_cli_counters_set_command, static) = {
635 .path = "adjacency counters",
636 .short_help = "adjacency counters [enable|disable]",
637 .function = adj_cli_counters_set,
638};