FD.io VPP  v20.01-48-g3e0dafb74
Vector Packet Processing
lookup_dpo.c
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1 /*
2  * Copyright (c) 2016 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #include <vnet/ip/ip.h>
17 #include <vnet/dpo/lookup_dpo.h>
19 #include <vnet/mpls/mpls_lookup.h>
20 #include <vnet/fib/fib_table.h>
21 #include <vnet/fib/ip4_fib.h>
22 #include <vnet/fib/ip6_fib.h>
23 #include <vnet/fib/mpls_fib.h>
24 #include <vnet/mfib/mfib_table.h>
25 #include <vnet/mfib/ip4_mfib.h>
26 #include <vnet/mfib/ip6_mfib.h>
27 
28 static const char *const lookup_input_names[] = LOOKUP_INPUTS;
29 static const char *const lookup_cast_names[] = LOOKUP_CASTS;
30 
31 /**
32  * If a packet encounters a lookup DPO more than the many times
33  * then we assume there is a loop in the forward graph and drop the packet
34  */
35 #define MAX_LUKPS_PER_PACKET 4
36 
37 /**
38  * @brief Enumeration of the lookup subtypes
39  */
40 typedef enum lookup_sub_type_t_
41 {
47 #define LOOKUP_SUB_TYPE_NUM (LOOKUP_SUB_TYPE_DST_TABLE_FROM_INTERFACE+1)
48 
49 #define FOR_EACH_LOOKUP_SUB_TYPE(_st) \
50  for (_st = LOOKUP_SUB_TYPE_IP4_SRC; _st < LOOKUP_SUB_TYPE_NUM; _st++)
51 
52 /**
53  * @brief pool of all MPLS Label DPOs
54  */
56 
57 /**
58  * @brief An array of registered DPO type values for the sub-types
59  */
61 
62 static lookup_dpo_t *
64 {
65  lookup_dpo_t *lkd;
66 
67  pool_get_aligned(lookup_dpo_pool, lkd, CLIB_CACHE_LINE_BYTES);
68 
69  return (lkd);
70 }
71 
72 static index_t
74 {
75  return (lkd - lookup_dpo_pool);
76 }
77 
78 static void
81  lookup_cast_t cast,
82  lookup_input_t input,
83  lookup_table_t table_config,
84  dpo_id_t *dpo)
85 {
86  lookup_dpo_t *lkd;
88 
89  lkd = lookup_dpo_alloc();
90  lkd->lkd_fib_index = fib_index;
91  lkd->lkd_proto = proto;
92  lkd->lkd_input = input;
93  lkd->lkd_table = table_config;
94  lkd->lkd_cast = cast;
95 
96  /*
97  * use the input type to select the lookup sub-type
98  */
99  type = 0;
100 
101  switch (input)
102  {
105  break;
107  switch (table_config)
108  {
111  break;
114  break;
115  }
116  if (LOOKUP_MULTICAST == cast)
117  {
119  }
120  }
121 
122  if (0 == type)
123  {
124  dpo_reset(dpo);
125  }
126  else
127  {
128  dpo_set(dpo, type, proto, lookup_dpo_get_index(lkd));
129  }
130 }
131 
132 void
135  lookup_cast_t cast,
136  lookup_input_t input,
137  lookup_table_t table_config,
138  dpo_id_t *dpo)
139 {
140  if (LOOKUP_TABLE_FROM_CONFIG == table_config)
141  {
142  if (LOOKUP_UNICAST == cast)
143  {
144  fib_table_lock(fib_index,
145  dpo_proto_to_fib(proto),
146  FIB_SOURCE_RR);
147  }
148  else
149  {
150  mfib_table_lock(fib_index,
151  dpo_proto_to_fib(proto),
153  }
154  }
155  lookup_dpo_add_or_lock_i(fib_index, proto, cast, input, table_config, dpo);
156 }
157 
158 void
161  lookup_cast_t cast,
162  lookup_input_t input,
163  lookup_table_t table_config,
164  dpo_id_t *dpo)
165 {
167 
168  if (LOOKUP_TABLE_FROM_CONFIG == table_config)
169  {
170  if (LOOKUP_UNICAST == cast)
171  {
172  fib_index =
174  table_id,
175  FIB_SOURCE_RR);
176  }
177  else
178  {
179  fib_index =
181  table_id,
183  }
184  }
185 
186  ASSERT(FIB_NODE_INDEX_INVALID != fib_index);
187  lookup_dpo_add_or_lock_i(fib_index, proto, cast, input, table_config, dpo);
188 }
189 
190 u8*
191 format_lookup_dpo (u8 *s, va_list *args)
192 {
193  index_t index = va_arg (*args, index_t);
194  lookup_dpo_t *lkd;
195 
196  lkd = lookup_dpo_get(index);
197 
199  {
200  s = format(s, "%s,%s lookup in interface's %U table",
204  }
205  else
206  {
207  if (LOOKUP_UNICAST == lkd->lkd_cast)
208  {
209  s = format(s, "%s,%s lookup in %U",
214  }
215  else
216  {
217  s = format(s, "%s,%s lookup in %U",
222  }
223  }
224  return (s);
225 }
226 
227 static void
229 {
230  lookup_dpo_t *lkd;
231 
232  lkd = lookup_dpo_get(dpo->dpoi_index);
233 
234  lkd->lkd_locks++;
235 }
236 
237 static void
239 {
240  lookup_dpo_t *lkd;
241 
242  lkd = lookup_dpo_get(dpo->dpoi_index);
243 
244  lkd->lkd_locks--;
245 
246  if (0 == lkd->lkd_locks)
247  {
249  {
250  if (LOOKUP_UNICAST == lkd->lkd_cast)
251  {
254  FIB_SOURCE_RR);
255  }
256  else
257  {
261  }
262  }
263  pool_put(lookup_dpo_pool, lkd);
264  }
265 }
266 
267 always_inline void
268 ip4_src_fib_lookup_one (u32 src_fib_index0,
269  const ip4_address_t * addr0,
270  u32 * src_adj_index0)
271 {
272  ip4_fib_mtrie_leaf_t leaf0;
273  ip4_fib_mtrie_t * mtrie0;
274 
275  mtrie0 = &ip4_fib_get (src_fib_index0)->mtrie;
276 
277  leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, addr0);
278  leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 2);
279  leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 3);
280 
281  src_adj_index0[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
282 }
283 
284 always_inline void
285 ip4_src_fib_lookup_two (u32 src_fib_index0,
286  u32 src_fib_index1,
287  const ip4_address_t * addr0,
288  const ip4_address_t * addr1,
289  u32 * src_adj_index0,
290  u32 * src_adj_index1)
291 {
292  ip4_fib_mtrie_leaf_t leaf0, leaf1;
293  ip4_fib_mtrie_t * mtrie0, * mtrie1;
294 
295  mtrie0 = &ip4_fib_get (src_fib_index0)->mtrie;
296  mtrie1 = &ip4_fib_get (src_fib_index1)->mtrie;
297 
298  leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, addr0);
299  leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, addr1);
300 
301  leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 2);
302  leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, addr1, 2);
303 
304  leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, addr0, 3);
305  leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, addr1, 3);
306 
307  src_adj_index0[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf0);
308  src_adj_index1[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf1);
309 }
310 
311 /**
312  * @brief Lookup trace data
313  */
314 typedef struct lookup_trace_t_
315 {
316  union {
317  ip46_address_t addr;
319  };
323 
324 
328  vlib_frame_t * from_frame,
329  int input_src_addr,
330  int table_from_interface)
331 {
332  u32 n_left_from, next_index, * from, * to_next;
333  u32 thread_index = vlib_get_thread_index();
335 
336  from = vlib_frame_vector_args (from_frame);
337  n_left_from = from_frame->n_vectors;
338 
339  next_index = node->cached_next_index;
340 
341  while (n_left_from > 0)
342  {
343  u32 n_left_to_next;
344 
345  vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
346 
347  while (n_left_from >= 4 && n_left_to_next > 2)
348  {
349  u32 bi0, lkdi0, lbi0, fib_index0, next0, hash_c0;
350  flow_hash_config_t flow_hash_config0;
351  const ip4_address_t *input_addr0;
352  const load_balance_t *lb0;
353  const lookup_dpo_t * lkd0;
354  const ip4_header_t * ip0;
355  const dpo_id_t *dpo0;
356  vlib_buffer_t * b0;
357  u32 bi1, lkdi1, lbi1, fib_index1, next1, hash_c1;
358  flow_hash_config_t flow_hash_config1;
359  const ip4_address_t *input_addr1;
360  const load_balance_t *lb1;
361  const lookup_dpo_t * lkd1;
362  const ip4_header_t * ip1;
363  const dpo_id_t *dpo1;
364  vlib_buffer_t * b1;
365 
366  /* Prefetch next iteration. */
367  {
368  vlib_buffer_t * p2, * p3;
369 
370  p2 = vlib_get_buffer (vm, from[2]);
371  p3 = vlib_get_buffer (vm, from[3]);
372 
373  vlib_prefetch_buffer_header (p2, LOAD);
374  vlib_prefetch_buffer_header (p3, LOAD);
375 
378  }
379 
380  bi0 = from[0];
381  to_next[0] = bi0;
382  bi1 = from[1];
383  to_next[1] = bi1;
384  from += 2;
385  to_next += 2;
386  n_left_from -= 2;
387  n_left_to_next -= 2;
388 
389  b0 = vlib_get_buffer (vm, bi0);
390  ip0 = vlib_buffer_get_current (b0);
391  b1 = vlib_get_buffer (vm, bi1);
392  ip1 = vlib_buffer_get_current (b1);
393 
394  /* dst lookup was done by ip4 lookup */
395  lkdi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
396  lkdi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
397  lkd0 = lookup_dpo_get(lkdi0);
398  lkd1 = lookup_dpo_get(lkdi1);
399 
400  /*
401  * choose between a lookup using the fib index in the DPO
402  * or getting the FIB index from the interface.
403  */
404  if (table_from_interface)
405  {
406  fib_index0 =
409  fib_index1 =
411  vnet_buffer(b1)->sw_if_index[VLIB_RX]);
412  }
413  else
414  {
415  fib_index0 = lkd0->lkd_fib_index;
416  fib_index1 = lkd1->lkd_fib_index;
417  }
418 
419  /*
420  * choose between a source or destination address lookup in the table
421  */
422  if (input_src_addr)
423  {
424  input_addr0 = &ip0->src_address;
425  input_addr1 = &ip1->src_address;
426  }
427  else
428  {
429  input_addr0 = &ip0->dst_address;
430  input_addr1 = &ip1->dst_address;
431  }
432 
433  /* do lookup */
434  ip4_src_fib_lookup_two (fib_index0, fib_index1,
435  input_addr0, input_addr1,
436  &lbi0, &lbi1);
437  lb0 = load_balance_get(lbi0);
438  lb1 = load_balance_get(lbi1);
439 
440  vnet_buffer(b0)->sw_if_index[VLIB_TX] = fib_index0;
441  vnet_buffer(b1)->sw_if_index[VLIB_TX] = fib_index1;
442 
443  /* Use flow hash to compute multipath adjacency. */
444  hash_c0 = vnet_buffer (b0)->ip.flow_hash = 0;
445  hash_c1 = vnet_buffer (b1)->ip.flow_hash = 0;
446 
447  if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
448  {
449  flow_hash_config0 = lb0->lb_hash_config;
450  hash_c0 = vnet_buffer (b0)->ip.flow_hash =
451  ip4_compute_flow_hash (ip0, flow_hash_config0);
452  }
453 
454  if (PREDICT_FALSE (lb1->lb_n_buckets > 1))
455  {
456  flow_hash_config1 = lb1->lb_hash_config;
457  hash_c1 = vnet_buffer (b1)->ip.flow_hash =
458  ip4_compute_flow_hash (ip1, flow_hash_config1);
459  }
460 
461  dpo0 = load_balance_get_bucket_i(lb0,
462  (hash_c0 &
463  (lb0->lb_n_buckets_minus_1)));
464  dpo1 = load_balance_get_bucket_i(lb1,
465  (hash_c1 &
466  (lb1->lb_n_buckets_minus_1)));
467 
468  next0 = dpo0->dpoi_next_node;
469  next1 = dpo1->dpoi_next_node;
470  vnet_buffer(b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
471  vnet_buffer(b1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index;
472 
474  (cm, thread_index, lbi0, 1,
475  vlib_buffer_length_in_chain (vm, b0));
477  (cm, thread_index, lbi1, 1,
478  vlib_buffer_length_in_chain (vm, b1));
479 
480  if (!(b0->flags & VNET_BUFFER_F_LOOP_COUNTER_VALID)) {
481  vnet_buffer2(b0)->loop_counter = 0;
482  b0->flags |= VNET_BUFFER_F_LOOP_COUNTER_VALID;
483  }
484  if (!(b1->flags & VNET_BUFFER_F_LOOP_COUNTER_VALID)) {
485  vnet_buffer2(b1)->loop_counter = 0;
486  b1->flags |= VNET_BUFFER_F_LOOP_COUNTER_VALID;
487  }
488 
489  vnet_buffer2(b0)->loop_counter++;
490  vnet_buffer2(b1)->loop_counter++;
491 
492  if (PREDICT_FALSE(vnet_buffer2(b0)->loop_counter > MAX_LUKPS_PER_PACKET))
493  next0 = IP_LOOKUP_NEXT_DROP;
494  if (PREDICT_FALSE(vnet_buffer2(b1)->loop_counter > MAX_LUKPS_PER_PACKET))
495  next1 = IP_LOOKUP_NEXT_DROP;
496 
497  if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
498  {
499  lookup_trace_t *tr = vlib_add_trace (vm, node,
500  b0, sizeof (*tr));
501  tr->fib_index = fib_index0;
502  tr->lbi = lbi0;
503  tr->addr.ip4 = *input_addr0;
504  }
505  if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
506  {
507  lookup_trace_t *tr = vlib_add_trace (vm, node,
508  b1, sizeof (*tr));
509  tr->fib_index = fib_index1;
510  tr->lbi = lbi1;
511  tr->addr.ip4 = *input_addr1;
512  }
513 
514  vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
515  to_next, n_left_to_next,
516  bi0, bi1, next0, next1);
517  }
518 
519  while (n_left_from > 0 && n_left_to_next > 0)
520  {
521  u32 bi0, lkdi0, lbi0, fib_index0, next0, hash_c0;
522  flow_hash_config_t flow_hash_config0;
523  const ip4_address_t *input_addr;
524  const load_balance_t *lb0;
525  const lookup_dpo_t * lkd0;
526  const ip4_header_t * ip0;
527  const dpo_id_t *dpo0;
528  vlib_buffer_t * b0;
529 
530  bi0 = from[0];
531  to_next[0] = bi0;
532  from += 1;
533  to_next += 1;
534  n_left_from -= 1;
535  n_left_to_next -= 1;
536 
537  b0 = vlib_get_buffer (vm, bi0);
538  ip0 = vlib_buffer_get_current (b0);
539 
540  /* dst lookup was done by ip4 lookup */
541  lkdi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
542  lkd0 = lookup_dpo_get(lkdi0);
543 
544  /*
545  * choose between a lookup using the fib index in the DPO
546  * or getting the FIB index from the interface.
547  */
548  if (table_from_interface)
549  {
550  fib_index0 =
553  }
554  else
555  {
556  fib_index0 = lkd0->lkd_fib_index;
557  }
558 
559  /*
560  * choose between a source or destination address lookup in the table
561  */
562  if (input_src_addr)
563  {
564  input_addr = &ip0->src_address;
565  }
566  else
567  {
568  input_addr = &ip0->dst_address;
569  }
570 
571  /* do lookup */
572  ip4_src_fib_lookup_one (fib_index0, input_addr, &lbi0);
573  lb0 = load_balance_get(lbi0);
574 
575  vnet_buffer(b0)->sw_if_index[VLIB_TX] = fib_index0;
576 
577  /* Use flow hash to compute multipath adjacency. */
578  hash_c0 = vnet_buffer (b0)->ip.flow_hash = 0;
579 
580  if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
581  {
582  flow_hash_config0 = lb0->lb_hash_config;
583  hash_c0 = vnet_buffer (b0)->ip.flow_hash =
584  ip4_compute_flow_hash (ip0, flow_hash_config0);
585  }
586 
587  dpo0 = load_balance_get_bucket_i(lb0,
588  (hash_c0 &
589  (lb0->lb_n_buckets_minus_1)));
590 
591  next0 = dpo0->dpoi_next_node;
592  vnet_buffer(b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
593 
595  (cm, thread_index, lbi0, 1,
596  vlib_buffer_length_in_chain (vm, b0));
597 
598  if (!(b0->flags & VNET_BUFFER_F_LOOP_COUNTER_VALID)) {
599  vnet_buffer2(b0)->loop_counter = 0;
600  b0->flags |= VNET_BUFFER_F_LOOP_COUNTER_VALID;
601  }
602 
603  vnet_buffer2(b0)->loop_counter++;
604 
605  if (PREDICT_FALSE(vnet_buffer2(b0)->loop_counter > MAX_LUKPS_PER_PACKET))
606  next0 = IP_LOOKUP_NEXT_DROP;
607 
608  if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
609  {
610  lookup_trace_t *tr = vlib_add_trace (vm, node,
611  b0, sizeof (*tr));
612  tr->fib_index = fib_index0;
613  tr->lbi = lbi0;
614  tr->addr.ip4 = *input_addr;
615  }
616 
617  vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
618  n_left_to_next, bi0, next0);
619  }
620  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
621  }
622  return from_frame->n_vectors;
623 }
624 
625 static u8 *
626 format_lookup_trace (u8 * s, va_list * args)
627 {
628  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
629  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
630  lookup_trace_t * t = va_arg (*args, lookup_trace_t *);
631  u32 indent = format_get_indent (s);
632  s = format (s, "%U fib-index:%d addr:%U load-balance:%d",
633  format_white_space, indent,
634  t->fib_index,
636  t->lbi);
637  return s;
638 }
639 
642  vlib_frame_t * from_frame)
643 {
644  return (lookup_dpo_ip4_inline(vm, node, from_frame, 0, 0));
645 }
646 
648  .name = "lookup-ip4-dst",
649  .vector_size = sizeof (u32),
650  .sibling_of = "ip4-lookup",
651  .format_trace = format_lookup_trace,
652 };
653 
656  vlib_frame_t * from_frame)
657 {
658  return (lookup_dpo_ip4_inline(vm, node, from_frame, 0, 1));
659 }
660 
662  .name = "lookup-ip4-dst-itf",
663  .vector_size = sizeof (u32),
664  .sibling_of = "ip4-lookup",
665  .format_trace = format_lookup_trace,
666 };
667 
670  vlib_frame_t * from_frame)
671 {
672  return (lookup_dpo_ip4_inline(vm, node, from_frame, 1, 0));
673 }
674 
676  .name = "lookup-ip4-src",
677  .vector_size = sizeof (u32),
678  .format_trace = format_lookup_trace,
679  .sibling_of = "ip4-lookup",
680 };
681 
685  vlib_frame_t * from_frame,
686  int input_src_addr,
687  int table_from_interface)
688 {
690  u32 n_left_from, next_index, * from, * to_next;
691  u32 thread_index = vlib_get_thread_index();
692 
693  from = vlib_frame_vector_args (from_frame);
694  n_left_from = from_frame->n_vectors;
695 
696  next_index = node->cached_next_index;
697 
698  while (n_left_from > 0)
699  {
700  u32 n_left_to_next;
701 
702  vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
703 
704  while (n_left_from >= 4 && n_left_to_next > 2)
705  {
706  u32 bi0, lkdi0, lbi0, fib_index0, next0, hash_c0;
707  flow_hash_config_t flow_hash_config0;
708  const ip6_address_t *input_addr0;
709  const load_balance_t *lb0;
710  const lookup_dpo_t * lkd0;
711  const ip6_header_t * ip0;
712  const dpo_id_t *dpo0;
713  vlib_buffer_t * b0;
714  u32 bi1, lkdi1, lbi1, fib_index1, next1, hash_c1;
715  flow_hash_config_t flow_hash_config1;
716  const ip6_address_t *input_addr1;
717  const load_balance_t *lb1;
718  const lookup_dpo_t * lkd1;
719  const ip6_header_t * ip1;
720  const dpo_id_t *dpo1;
721  vlib_buffer_t * b1;
722 
723  /* Prefetch next iteration. */
724  {
725  vlib_buffer_t * p2, * p3;
726 
727  p2 = vlib_get_buffer (vm, from[2]);
728  p3 = vlib_get_buffer (vm, from[3]);
729 
730  vlib_prefetch_buffer_header (p2, LOAD);
731  vlib_prefetch_buffer_header (p3, LOAD);
732 
735  }
736 
737  bi0 = from[0];
738  to_next[0] = bi0;
739  bi1 = from[1];
740  to_next[1] = bi1;
741  from += 2;
742  to_next += 2;
743  n_left_from -= 2;
744  n_left_to_next -= 2;
745 
746  b0 = vlib_get_buffer (vm, bi0);
747  ip0 = vlib_buffer_get_current (b0);
748  b1 = vlib_get_buffer (vm, bi1);
749  ip1 = vlib_buffer_get_current (b1);
750 
751  /* dst lookup was done by ip6 lookup */
752  lkdi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
753  lkdi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
754  lkd0 = lookup_dpo_get(lkdi0);
755  lkd1 = lookup_dpo_get(lkdi1);
756 
757  /*
758  * choose between a lookup using the fib index in the DPO
759  * or getting the FIB index from the interface.
760  */
761  if (table_from_interface)
762  {
763  fib_index0 =
766  fib_index1 =
768  vnet_buffer(b1)->sw_if_index[VLIB_RX]);
769  }
770  else
771  {
772  fib_index0 = lkd0->lkd_fib_index;
773  fib_index1 = lkd1->lkd_fib_index;
774  }
775 
776  /*
777  * choose between a source or destination address lookup in the table
778  */
779  if (input_src_addr)
780  {
781  input_addr0 = &ip0->src_address;
782  input_addr1 = &ip1->src_address;
783  }
784  else
785  {
786  input_addr0 = &ip0->dst_address;
787  input_addr1 = &ip1->dst_address;
788  }
789 
790  /* do src lookup */
792  fib_index0,
793  input_addr0);
795  fib_index1,
796  input_addr1);
797  lb0 = load_balance_get(lbi0);
798  lb1 = load_balance_get(lbi1);
799 
800  vnet_buffer(b0)->sw_if_index[VLIB_TX] = fib_index0;
801  vnet_buffer(b1)->sw_if_index[VLIB_TX] = fib_index1;
802 
803  /* Use flow hash to compute multipath adjacency. */
804  hash_c0 = vnet_buffer (b0)->ip.flow_hash = 0;
805  hash_c1 = vnet_buffer (b1)->ip.flow_hash = 0;
806 
807  if (!(b0->flags & VNET_BUFFER_F_LOOP_COUNTER_VALID)) {
808  vnet_buffer2(b0)->loop_counter = 0;
809  b0->flags |= VNET_BUFFER_F_LOOP_COUNTER_VALID;
810  }
811  if (!(b1->flags & VNET_BUFFER_F_LOOP_COUNTER_VALID)) {
812  vnet_buffer2(b1)->loop_counter = 0;
813  b1->flags |= VNET_BUFFER_F_LOOP_COUNTER_VALID;
814  }
815 
816  vnet_buffer2(b0)->loop_counter++;
817  vnet_buffer2(b1)->loop_counter++;
818 
819  if (PREDICT_FALSE(vnet_buffer2(b0)->loop_counter > MAX_LUKPS_PER_PACKET))
820  next0 = IP_LOOKUP_NEXT_DROP;
821  if (PREDICT_FALSE(vnet_buffer2(b1)->loop_counter > MAX_LUKPS_PER_PACKET))
822  next1 = IP_LOOKUP_NEXT_DROP;
823 
824  if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
825  {
826  flow_hash_config0 = lb0->lb_hash_config;
827  hash_c0 = vnet_buffer (b0)->ip.flow_hash =
828  ip6_compute_flow_hash (ip0, flow_hash_config0);
829  }
830 
831  if (PREDICT_FALSE (lb1->lb_n_buckets > 1))
832  {
833  flow_hash_config1 = lb1->lb_hash_config;
834  hash_c1 = vnet_buffer (b1)->ip.flow_hash =
835  ip6_compute_flow_hash (ip1, flow_hash_config1);
836  }
837 
838  dpo0 = load_balance_get_bucket_i(lb0,
839  (hash_c0 &
840  (lb0->lb_n_buckets_minus_1)));
841  dpo1 = load_balance_get_bucket_i(lb1,
842  (hash_c1 &
843  (lb1->lb_n_buckets_minus_1)));
844 
845  next0 = dpo0->dpoi_next_node;
846  next1 = dpo1->dpoi_next_node;
847  vnet_buffer(b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
848  vnet_buffer(b1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index;
849 
851  (cm, thread_index, lbi0, 1,
852  vlib_buffer_length_in_chain (vm, b0));
854  (cm, thread_index, lbi1, 1,
855  vlib_buffer_length_in_chain (vm, b1));
856 
857  if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
858  {
859  lookup_trace_t *tr = vlib_add_trace (vm, node,
860  b0, sizeof (*tr));
861  tr->fib_index = fib_index0;
862  tr->lbi = lbi0;
863  tr->addr.ip6 = *input_addr0;
864  }
865  if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
866  {
867  lookup_trace_t *tr = vlib_add_trace (vm, node,
868  b1, sizeof (*tr));
869  tr->fib_index = fib_index1;
870  tr->lbi = lbi1;
871  tr->addr.ip6 = *input_addr1;
872  }
873  vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
874  n_left_to_next, bi0, bi1,
875  next0, next1);
876  }
877  while (n_left_from > 0 && n_left_to_next > 0)
878  {
879  u32 bi0, lkdi0, lbi0, fib_index0, next0, hash_c0;
880  flow_hash_config_t flow_hash_config0;
881  const ip6_address_t *input_addr0;
882  const load_balance_t *lb0;
883  const lookup_dpo_t * lkd0;
884  const ip6_header_t * ip0;
885  const dpo_id_t *dpo0;
886  vlib_buffer_t * b0;
887 
888  bi0 = from[0];
889  to_next[0] = bi0;
890  from += 1;
891  to_next += 1;
892  n_left_from -= 1;
893  n_left_to_next -= 1;
894 
895  b0 = vlib_get_buffer (vm, bi0);
896  ip0 = vlib_buffer_get_current (b0);
897 
898  /* dst lookup was done by ip6 lookup */
899  lkdi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
900  lkd0 = lookup_dpo_get(lkdi0);
901 
902  /*
903  * choose between a lookup using the fib index in the DPO
904  * or getting the FIB index from the interface.
905  */
906  if (table_from_interface)
907  {
908  fib_index0 =
911  }
912  else
913  {
914  fib_index0 = lkd0->lkd_fib_index;
915  }
916 
917  /*
918  * choose between a source or destination address lookup in the table
919  */
920  if (input_src_addr)
921  {
922  input_addr0 = &ip0->src_address;
923  }
924  else
925  {
926  input_addr0 = &ip0->dst_address;
927  }
928 
929  /* do src lookup */
931  fib_index0,
932  input_addr0);
933  lb0 = load_balance_get(lbi0);
934 
935  vnet_buffer(b0)->sw_if_index[VLIB_TX] = fib_index0;
936 
937  /* Use flow hash to compute multipath adjacency. */
938  hash_c0 = vnet_buffer (b0)->ip.flow_hash = 0;
939 
940  if (PREDICT_FALSE (lb0->lb_n_buckets > 1))
941  {
942  flow_hash_config0 = lb0->lb_hash_config;
943  hash_c0 = vnet_buffer (b0)->ip.flow_hash =
944  ip6_compute_flow_hash (ip0, flow_hash_config0);
945  }
946 
947  dpo0 = load_balance_get_bucket_i(lb0,
948  (hash_c0 &
949  (lb0->lb_n_buckets_minus_1)));
950 
951  next0 = dpo0->dpoi_next_node;
952  vnet_buffer(b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
953 
954  if (!(b0->flags & VNET_BUFFER_F_LOOP_COUNTER_VALID)) {
955  vnet_buffer2(b0)->loop_counter = 0;
956  b0->flags |= VNET_BUFFER_F_LOOP_COUNTER_VALID;
957  }
958 
959  vnet_buffer2(b0)->loop_counter++;
960 
961  if (PREDICT_FALSE(vnet_buffer2(b0)->loop_counter > MAX_LUKPS_PER_PACKET))
962  next0 = IP_LOOKUP_NEXT_DROP;
963 
965  (cm, thread_index, lbi0, 1,
966  vlib_buffer_length_in_chain (vm, b0));
967 
968  if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
969  {
970  lookup_trace_t *tr = vlib_add_trace (vm, node,
971  b0, sizeof (*tr));
972  tr->fib_index = fib_index0;
973  tr->lbi = lbi0;
974  tr->addr.ip6 = *input_addr0;
975  }
976  vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
977  n_left_to_next, bi0, next0);
978  }
979  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
980  }
981  return from_frame->n_vectors;
982 }
983 
986  vlib_frame_t * from_frame)
987 {
988  return (lookup_dpo_ip6_inline(vm, node, from_frame, 0 /*use src*/, 0));
989 }
990 
992  .name = "lookup-ip6-dst",
993  .vector_size = sizeof (u32),
994  .format_trace = format_lookup_trace,
995  .sibling_of = "ip6-lookup",
996 };
997 
1000  vlib_frame_t * from_frame)
1001 {
1002  return (lookup_dpo_ip6_inline(vm, node, from_frame, 0 /*use src*/, 1));
1003 }
1004 
1006  .name = "lookup-ip6-dst-itf",
1007  .vector_size = sizeof (u32),
1008  .format_trace = format_lookup_trace,
1009  .sibling_of = "ip6-lookup",
1010 };
1011 
1014  vlib_frame_t * from_frame)
1015 {
1016  return (lookup_dpo_ip6_inline(vm, node, from_frame, 1, 0));
1017 }
1018 
1020  .name = "lookup-ip6-src",
1021  .vector_size = sizeof (u32),
1022  .format_trace = format_lookup_trace,
1023  .sibling_of = "ip6-lookup",
1024 };
1025 
1029  vlib_frame_t * from_frame,
1030  int table_from_interface)
1031 {
1032  u32 n_left_from, next_index, * from, * to_next;
1033  u32 thread_index = vlib_get_thread_index();
1035 
1036  from = vlib_frame_vector_args (from_frame);
1037  n_left_from = from_frame->n_vectors;
1038 
1039  next_index = node->cached_next_index;
1040 
1041  while (n_left_from > 0)
1042  {
1043  u32 n_left_to_next;
1044 
1045  vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
1046 
1047  /* while (n_left_from >= 4 && n_left_to_next >= 2) */
1048  /* } */
1049 
1050  while (n_left_from > 0 && n_left_to_next > 0)
1051  {
1052  u32 bi0, lkdi0, lbi0, fib_index0, next0, hash0;
1053  const mpls_unicast_header_t * hdr0;
1054  const load_balance_t *lb0;
1055  const lookup_dpo_t * lkd0;
1056  const dpo_id_t *dpo0;
1057  vlib_buffer_t * b0;
1058 
1059  bi0 = from[0];
1060  to_next[0] = bi0;
1061  from += 1;
1062  to_next += 1;
1063  n_left_from -= 1;
1064  n_left_to_next -= 1;
1065 
1066  b0 = vlib_get_buffer (vm, bi0);
1067  hdr0 = vlib_buffer_get_current (b0);
1068 
1069  /* dst lookup was done by mpls lookup */
1070  lkdi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
1071  lkd0 = lookup_dpo_get(lkdi0);
1072 
1073  /*
1074  * choose between a lookup using the fib index in the DPO
1075  * or getting the FIB index from the interface.
1076  */
1077  if (table_from_interface)
1078  {
1079  fib_index0 =
1082  }
1083  else
1084  {
1085  fib_index0 = lkd0->lkd_fib_index;
1086  }
1087 
1088  /* do lookup */
1089  lbi0 = mpls_fib_table_forwarding_lookup (fib_index0, hdr0);
1090  lb0 = load_balance_get(lbi0);
1091  dpo0 = load_balance_get_bucket_i(lb0, 0);
1092 
1093  next0 = dpo0->dpoi_next_node;
1094  vnet_buffer(b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
1095 
1096 
1097  if (MPLS_IS_REPLICATE & lbi0)
1098  {
1100  vnet_buffer (b0)->ip.adj_index[VLIB_TX] =
1101  (lbi0 & ~MPLS_IS_REPLICATE);
1102  }
1103  else
1104  {
1105  lb0 = load_balance_get(lbi0);
1106  ASSERT (lb0->lb_n_buckets > 0);
1107  ASSERT (is_pow2 (lb0->lb_n_buckets));
1108 
1109  if (PREDICT_FALSE(lb0->lb_n_buckets > 1))
1110  {
1111  hash0 = vnet_buffer (b0)->ip.flow_hash =
1114  (lb0,
1115  (hash0 & (lb0->lb_n_buckets_minus_1)));
1116  }
1117  else
1118  {
1119  dpo0 = load_balance_get_bucket_i (lb0, 0);
1120  }
1121  next0 = dpo0->dpoi_next_node;
1122 
1123  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
1124 
1126  (cm, thread_index, lbi0, 1,
1127  vlib_buffer_length_in_chain (vm, b0));
1128  }
1129 
1130  vnet_buffer (b0)->mpls.ttl = ((char*)hdr0)[3];
1131  vnet_buffer (b0)->mpls.exp = (((char*)hdr0)[2] & 0xe) >> 1;
1132  vnet_buffer (b0)->mpls.first = 1;
1133  vlib_buffer_advance(b0, sizeof(*hdr0));
1134 
1135  if (!(b0->flags & VNET_BUFFER_F_LOOP_COUNTER_VALID)) {
1136  vnet_buffer2(b0)->loop_counter = 0;
1137  b0->flags |= VNET_BUFFER_F_LOOP_COUNTER_VALID;
1138  }
1139 
1140  vnet_buffer2(b0)->loop_counter++;
1141 
1142  if (PREDICT_FALSE(vnet_buffer2(b0)->loop_counter > MAX_LUKPS_PER_PACKET))
1143  next0 = MPLS_LOOKUP_NEXT_DROP;
1144 
1145  if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
1146  {
1147  lookup_trace_t *tr = vlib_add_trace (vm, node,
1148  b0, sizeof (*tr));
1149  tr->fib_index = fib_index0;
1150  tr->lbi = lbi0;
1151  tr->hdr = *hdr0;
1152  }
1153 
1154  vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
1155  n_left_to_next, bi0, next0);
1156  }
1157  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1158  }
1159  return from_frame->n_vectors;
1160 }
1161 
1162 static u8 *
1163 format_lookup_mpls_trace (u8 * s, va_list * args)
1164 {
1165  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1166  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
1167  lookup_trace_t * t = va_arg (*args, lookup_trace_t *);
1168  u32 indent = format_get_indent (s);
1170 
1171  hdr.label_exp_s_ttl = clib_net_to_host_u32(t->hdr.label_exp_s_ttl);
1172 
1173  s = format (s, "%U fib-index:%d hdr:%U load-balance:%d",
1174  format_white_space, indent,
1175  t->fib_index,
1176  format_mpls_header, hdr,
1177  t->lbi);
1178  return s;
1179 }
1180 
1183  vlib_frame_t * from_frame)
1184 {
1185  return (lookup_dpo_mpls_inline(vm, node, from_frame, 0));
1186 }
1187 
1189  .name = "lookup-mpls-dst",
1190  .vector_size = sizeof (u32),
1191  .sibling_of = "mpls-lookup",
1192  .format_trace = format_lookup_mpls_trace,
1193  .n_next_nodes = 0,
1194 };
1195 
1198  vlib_frame_t * from_frame)
1199 {
1200  return (lookup_dpo_mpls_inline(vm, node, from_frame, 1));
1201 }
1202 
1204  .name = "lookup-mpls-dst-itf",
1205  .vector_size = sizeof (u32),
1206  .sibling_of = "mpls-lookup",
1207  .format_trace = format_lookup_mpls_trace,
1208  .n_next_nodes = 0,
1209 };
1210 
1216 
1220  vlib_frame_t * from_frame,
1221  int is_v4)
1222 {
1223  u32 n_left_from, next_index, * from, * to_next;
1224 
1225  from = vlib_frame_vector_args (from_frame);
1226  n_left_from = from_frame->n_vectors;
1227 
1228  next_index = LOOKUP_IP_DST_MCAST_NEXT_RPF;
1229 
1230  while (n_left_from > 0)
1231  {
1232  u32 n_left_to_next;
1233 
1234  vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
1235 
1236  /* while (n_left_from >= 4 && n_left_to_next >= 2) */
1237  /* } */
1238 
1239  while (n_left_from > 0 && n_left_to_next > 0)
1240  {
1241  u32 bi0, lkdi0, fib_index0, next0;
1242  const lookup_dpo_t * lkd0;
1243  fib_node_index_t mfei0;
1244  vlib_buffer_t * b0;
1245 
1246  bi0 = from[0];
1247  to_next[0] = bi0;
1248  from += 1;
1249  to_next += 1;
1250  n_left_from -= 1;
1251  n_left_to_next -= 1;
1252 
1253  b0 = vlib_get_buffer (vm, bi0);
1254 
1255  /* dst lookup was done by mpls lookup */
1256  lkdi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
1257  lkd0 = lookup_dpo_get(lkdi0);
1258  fib_index0 = lkd0->lkd_fib_index;
1260 
1261  if (is_v4)
1262  {
1263  ip4_header_t * ip0;
1264 
1265  ip0 = vlib_buffer_get_current (b0);
1266  mfei0 = ip4_mfib_table_lookup(ip4_mfib_get(fib_index0),
1267  &ip0->src_address,
1268  &ip0->dst_address,
1269  64);
1270  if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
1271  {
1272  lookup_trace_t *tr = vlib_add_trace (vm, node,
1273  b0, sizeof (*tr));
1274  tr->fib_index = fib_index0;
1275  tr->lbi = mfei0;
1276  tr->addr.ip4 = ip0->dst_address;
1277  }
1278  }
1279  else
1280  {
1281  ip6_header_t * ip0;
1282 
1283  ip0 = vlib_buffer_get_current (b0);
1284  mfei0 = ip6_mfib_table_fwd_lookup(ip6_mfib_get(fib_index0),
1285  &ip0->src_address,
1286  &ip0->dst_address);
1287  if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
1288  {
1289  lookup_trace_t *tr = vlib_add_trace (vm, node,
1290  b0, sizeof (*tr));
1291  tr->fib_index = fib_index0;
1292  tr->lbi = mfei0;
1293  tr->addr.ip6 = ip0->dst_address;
1294  }
1295  }
1296 
1297  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = mfei0;
1298 
1299  if (!(b0->flags & VNET_BUFFER_F_LOOP_COUNTER_VALID)) {
1300  vnet_buffer2(b0)->loop_counter = 0;
1301  b0->flags |= VNET_BUFFER_F_LOOP_COUNTER_VALID;
1302  }
1303 
1304  vnet_buffer2(b0)->loop_counter++;
1305 
1306  if (PREDICT_FALSE(vnet_buffer2(b0)->loop_counter > MAX_LUKPS_PER_PACKET))
1308 
1309  vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
1310  n_left_to_next, bi0, next0);
1311  }
1312  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1313  }
1314  return from_frame->n_vectors;
1315 }
1316 
1319  vlib_frame_t * from_frame)
1320 {
1321  return (lookup_dpo_ip_dst_mcast_inline(vm, node, from_frame, 1));
1322 }
1323 
1325  .name = "lookup-ip4-dst-mcast",
1326  .vector_size = sizeof (u32),
1327 
1328  .format_trace = format_lookup_trace,
1329  .n_next_nodes = LOOKUP_IP_DST_MCAST_N_NEXT,
1330  .next_nodes = {
1331  [LOOKUP_IP_DST_MCAST_NEXT_DROP] = "ip4-drop",
1332  [LOOKUP_IP_DST_MCAST_NEXT_RPF] = "ip4-mfib-forward-rpf",
1333  },
1334 };
1335 
1338  vlib_frame_t * from_frame)
1339 {
1340  return (lookup_dpo_ip_dst_mcast_inline(vm, node, from_frame, 0));
1341 }
1342 
1344  .name = "lookup-ip6-dst-mcast",
1345  .vector_size = sizeof (u32),
1346 
1347  .format_trace = format_lookup_trace,
1348  .n_next_nodes = LOOKUP_IP_DST_MCAST_N_NEXT,
1349  .next_nodes = {
1350  [LOOKUP_IP_DST_MCAST_NEXT_DROP] = "ip6-drop",
1351  [LOOKUP_IP_DST_MCAST_NEXT_RPF] = "ip6-mfib-forward-rpf",
1352  },
1353 };
1354 
1355 static void
1357 {
1358  fib_show_memory_usage("Lookup",
1359  pool_elts(lookup_dpo_pool),
1360  pool_len(lookup_dpo_pool),
1361  sizeof(lookup_dpo_t));
1362 }
1363 
1364 const static dpo_vft_t lkd_vft = {
1366  .dv_unlock = lookup_dpo_unlock,
1367  .dv_format = format_lookup_dpo,
1368 };
1369 const static dpo_vft_t lkd_vft_w_mem_show = {
1371  .dv_unlock = lookup_dpo_unlock,
1372  .dv_format = format_lookup_dpo,
1373  .dv_mem_show = lookup_dpo_mem_show,
1374 };
1375 
1376 const static char* const lookup_src_ip4_nodes[] =
1377 {
1378  "lookup-ip4-src",
1379  NULL,
1380 };
1381 const static char* const lookup_src_ip6_nodes[] =
1382 {
1383  "lookup-ip6-src",
1384  NULL,
1385 };
1386 const static char* const * const lookup_src_nodes[DPO_PROTO_NUM] =
1387 {
1390  [DPO_PROTO_MPLS] = NULL,
1391 };
1392 
1393 const static char* const lookup_dst_ip4_nodes[] =
1394 {
1395  "lookup-ip4-dst",
1396  NULL,
1397 };
1398 const static char* const lookup_dst_ip6_nodes[] =
1399 {
1400  "lookup-ip6-dst",
1401  NULL,
1402 };
1403 const static char* const lookup_dst_mpls_nodes[] =
1404 {
1405  "lookup-mpls-dst",
1406  NULL,
1407 };
1408 const static char* const * const lookup_dst_nodes[DPO_PROTO_NUM] =
1409 {
1413 };
1414 
1415 const static char* const lookup_dst_mcast_ip4_nodes[] =
1416 {
1417  "lookup-ip4-dst-mcast",
1418  NULL,
1419 };
1420 const static char* const lookup_dst_mcast_ip6_nodes[] =
1421 {
1422  "lookup-ip6-dst-mcast",
1423  NULL,
1424 };
1425 const static char* const * const lookup_dst_mcast_nodes[DPO_PROTO_NUM] =
1426 {
1429 };
1430 
1431 const static char* const lookup_dst_from_interface_ip4_nodes[] =
1432 {
1433  "lookup-ip4-dst-itf",
1434  NULL,
1435 };
1436 const static char* const lookup_dst_from_interface_ip6_nodes[] =
1437 {
1438  "lookup-ip6-dst-itf",
1439  NULL,
1440 };
1441 const static char* const lookup_dst_from_interface_mpls_nodes[] =
1442 {
1443  "lookup-mpls-dst-itf",
1444  NULL,
1445 };
1446 const static char* const * const lookup_dst_from_interface_nodes[DPO_PROTO_NUM] =
1447 {
1451 };
1452 
1453 static clib_error_t *
1455  unformat_input_t * input,
1456  vlib_cli_command_t * cmd)
1457 {
1458  index_t lkdi = INDEX_INVALID;
1459 
1460  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1461  {
1462  if (unformat (input, "%d", &lkdi))
1463  ;
1464  else
1465  break;
1466  }
1467 
1468  if (INDEX_INVALID != lkdi)
1469  {
1470  vlib_cli_output (vm, "%U", format_lookup_dpo, lkdi);
1471  }
1472  else
1473  {
1474  lookup_dpo_t *lkd;
1475 
1476  pool_foreach(lkd, lookup_dpo_pool,
1477  ({
1478  vlib_cli_output (vm, "[@%d] %U",
1479  lookup_dpo_get_index(lkd),
1481  lookup_dpo_get_index(lkd));
1482  }));
1483  }
1484 
1485  return 0;
1486 }
1487 
1488 VLIB_CLI_COMMAND (replicate_show_command, static) = {
1489  .path = "show lookup-dpo",
1490  .short_help = "show lookup-dpo [<index>]",
1491  .function = lookup_dpo_show,
1492 };
1493 
1494 void
1496 {
1497  dpo_register(DPO_LOOKUP, &lkd_vft_w_mem_show, NULL);
1498 
1499  /*
1500  * There are various sorts of lookup; src or dst addr v4 /v6 etc.
1501  * there isn't an object type for each (there is only the lookup_dpo_t),
1502  * but, for performance reasons, there is a data plane function, and hence
1503  * VLIB node for each. VLIB graph node construction is based on DPO types
1504  * so we create sub-types.
1505  */
1514 }
u16 lb_n_buckets
number of buckets in the load-balance.
Definition: load_balance.h:116
u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index, VLIB_BUFFER_IS_TRACED: trace this buffer.
Definition: buffer.h:124
dpo_lock_fn_t dv_lock
A reference counting lock function.
Definition: dpo.h:406
static uword lookup_dpo_ip_dst_mcast_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, int is_v4)
Definition: lookup_dpo.c:1218
u32 mfib_table_find_or_create_and_lock(fib_protocol_t proto, u32 table_id, mfib_source_t src)
Get the index of the FIB for a Table-ID.
Definition: mfib_table.c:613
lookup_input_t lkd_input
Switch to use src or dst address.
Definition: lookup_dpo.h:88
lookup_dpo_t * lookup_dpo_pool
pool of all MPLS Label DPOs
Definition: lookup_dpo.c:55
vlib_combined_counter_main_t lbm_to_counters
Definition: load_balance.h:46
A representation of an MPLS label for imposition in the data-path.
Definition: lookup_dpo.h:65
u8 proto
Definition: acl_types.api:47
#define CLIB_UNUSED(x)
Definition: clib.h:82
A virtual function table regisitered for a DPO type.
Definition: dpo.h:401
struct lookup_trace_t_ lookup_trace_t
Lookup trace data.
static u32 ip6_fib_table_fwding_lookup(u32 fib_index, const ip6_address_t *dst)
Definition: ip6_fib.h:67
void lookup_dpo_add_or_lock_w_table_id(u32 table_id, dpo_proto_t proto, lookup_cast_t cast, lookup_input_t input, lookup_table_t table_config, dpo_id_t *dpo)
Definition: lookup_dpo.c:159
static uword lookup_dpo_mpls_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, int table_from_interface)
Definition: lookup_dpo.c:1027
enum lookup_sub_type_t_ lookup_sub_type_t
Enumeration of the lookup subtypes.
fib_node_index_t fib_index
Definition: lookup_dpo.c:320
format_function_t format_mpls_header
Definition: mpls.h:72
static void vlib_increment_combined_counter(vlib_combined_counter_main_t *cm, u32 thread_index, u32 index, u64 n_packets, u64 n_bytes)
Increment a combined counter.
Definition: counter.h:220
The mutiway-TRIE.
Definition: ip4_mtrie.h:129
lookup_sub_type_t_
Enumeration of the lookup subtypes.
Definition: lookup_dpo.c:40
ip4_address_t src_address
Definition: ip4_packet.h:170
#define vnet_buffer2(b)
Definition: buffer.h:467
static ip4_fib_mtrie_leaf_t ip4_fib_mtrie_lookup_step(const ip4_fib_mtrie_t *m, ip4_fib_mtrie_leaf_t current_leaf, const ip4_address_t *dst_address, u32 dst_address_byte_index)
Lookup step.
Definition: ip4_mtrie.h:202
static const char *const *const lookup_dst_nodes[DPO_PROTO_NUM]
Definition: lookup_dpo.c:1408
static dpo_type_t lookup_dpo_sub_types[LOOKUP_SUB_TYPE_NUM]
An array of registered DPO type values for the sub-types.
Definition: lookup_dpo.c:60
#define NULL
Definition: clib.h:58
static u32 ip4_compute_flow_hash(const ip4_header_t *ip, flow_hash_config_t flow_hash_config)
Definition: ip4.h:304
flow_hash_config_t lb_hash_config
the hash config to use when selecting a bucket.
Definition: load_balance.h:161
static const dpo_id_t * load_balance_get_fwd_bucket(const load_balance_t *lb, u16 bucket)
u8 data[0]
Packet data.
Definition: buffer.h:181
u32 index_t
A Data-Path Object is an object that represents actions that are applied to packets are they are swit...
Definition: dpo.h:41
static uword lookup_dpo_ip6_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, int input_src_addr, int table_from_interface)
Definition: lookup_dpo.c:683
#define LOOKUP_CASTS
Definition: lookup_dpo.h:57
static u32 format_get_indent(u8 *s)
Definition: format.h:72
fib_node_index_t ip6_mfib_table_fwd_lookup(const ip6_mfib_t *mfib, const ip6_address_t *src, const ip6_address_t *grp)
Definition: ip6_mfib.c:350
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
#define LOOKUP_SUB_TYPE_NUM
Definition: lookup_dpo.c:47
static const char *const *const lookup_dst_mcast_nodes[DPO_PROTO_NUM]
Definition: lookup_dpo.c:1425
#define VLIB_NODE_FN(node)
Definition: node.h:202
lookup_cast_t lkd_cast
Unicast of rmulticast FIB lookup.
Definition: lookup_dpo.h:98
vlib_node_registration_t lookup_mpls_dst_itf_node
(constructor) VLIB_REGISTER_NODE (lookup_mpls_dst_itf_node)
Definition: lookup_dpo.c:1203
u8 * format_lookup_dpo(u8 *s, va_list *args)
Definition: lookup_dpo.c:191
u16 lkd_locks
Number of locks.
Definition: lookup_dpo.h:103
static uword vlib_buffer_length_in_chain(vlib_main_t *vm, vlib_buffer_t *b)
Get length in bytes of the buffer chain.
Definition: buffer_funcs.h:366
ip6_address_t src_address
Definition: ip6_packet.h:307
unsigned char u8
Definition: types.h:56
#define pool_len(p)
Number of elements in pool vector.
Definition: pool.h:140
static ip4_mfib_t * ip4_mfib_get(u32 index)
Get the FIB at the given index.
Definition: ip4_mfib.h:62
u32 ip4_fib_table_get_index_for_sw_if_index(u32 sw_if_index)
Definition: ip4_fib.c:230
void dpo_register(dpo_type_t type, const dpo_vft_t *vft, const char *const *const *nodes)
For a given DPO type Register:
Definition: dpo.c:322
enum dpo_type_t_ dpo_type_t
Common types of data-path objects New types can be dynamically added using dpo_register_new_type() ...
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:498
vl_api_interface_index_t sw_if_index
Definition: gre.api:59
static const char *const lookup_dst_from_interface_ip6_nodes[]
Definition: lookup_dpo.c:1436
static lookup_dpo_t * lookup_dpo_alloc(void)
Definition: lookup_dpo.c:63
u16 lb_n_buckets_minus_1
number of buckets in the load-balance - 1.
Definition: load_balance.h:121
ip4_address_t dst_address
Definition: ip4_packet.h:170
u8 * format_white_space(u8 *s, va_list *va)
Definition: std-formats.c:129
static const char *const *const lookup_src_nodes[DPO_PROTO_NUM]
Definition: lookup_dpo.c:1386
Recursive resolution source.
Definition: fib_source.h:119
dpo_proto_t lkd_proto
The protocol of the FIB for the lookup, and hence the protocol of the packet.
Definition: lookup_dpo.h:83
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:203
u32 ip4_fib_mtrie_leaf_t
Definition: ip4_mtrie.h:52
static void lookup_dpo_unlock(dpo_id_t *dpo)
Definition: lookup_dpo.c:238
#define MPLS_IS_REPLICATE
The top bit of the index, which is the result of the MPLS lookup is used to determine if the DPO is a...
Definition: mpls_types.h:66
ip46_address_t addr
Definition: lookup_dpo.c:317
void fib_show_memory_usage(const char *name, u32 in_use_elts, u32 allocd_elts, size_t size_elt)
Show the memory usage for a type.
Definition: fib_node.c:220
unsigned int u32
Definition: types.h:88
enum dpo_proto_t_ dpo_proto_t
Data path protocol.
fib_protocol_t dpo_proto_to_fib(dpo_proto_t dpo_proto)
Definition: fib_types.c:276
enum lookup_cast_t_ lookup_cast_t
Switch to use the packet&#39;s source or destination address for lookup.
u32 ip6_fib_table_get_index_for_sw_if_index(u32 sw_if_index)
Definition: ip6_fib.c:347
dpo_type_t dpo_register_new_type(const dpo_vft_t *vft, const char *const *const *nodes)
Create and register a new DPO type.
Definition: dpo.c:342
static const char *const lookup_dst_mcast_ip4_nodes[]
Definition: lookup_dpo.c:1415
static u32 ip4_fib_mtrie_leaf_get_adj_index(ip4_fib_mtrie_leaf_t n)
From the stored slot value extract the LB index value.
Definition: ip4_mtrie.h:192
vlib_node_registration_t lookup_ip4_dst_node
(constructor) VLIB_REGISTER_NODE (lookup_ip4_dst_node)
Definition: lookup_dpo.c:647
vl_api_fib_path_type_t type
Definition: fib_types.api:123
static u32 mpls_fib_table_get_index_for_sw_if_index(u32 sw_if_index)
Definition: mpls_fib.h:137
vlib_node_registration_t lookup_ip6_src_node
(constructor) VLIB_REGISTER_NODE (lookup_ip6_src_node)
Definition: lookup_dpo.c:1019
static void lookup_dpo_lock(dpo_id_t *dpo)
Definition: lookup_dpo.c:228
The identity of a DPO is a combination of its type and its instance number/index of objects of that t...
Definition: dpo.h:170
vnet_crypto_main_t * cm
Definition: quic_crypto.c:41
static lookup_dpo_t * lookup_dpo_get(index_t index)
Definition: lookup_dpo.h:127
void mfib_table_unlock(u32 fib_index, fib_protocol_t proto, mfib_source_t source)
Take a reference counting lock on the table.
Definition: mfib_table.c:777
static const dpo_id_t * load_balance_get_bucket_i(const load_balance_t *lb, u32 bucket)
Definition: load_balance.h:229
static u32 mpls_compute_flow_hash(const mpls_unicast_header_t *hdr, flow_hash_config_t flow_hash_config)
Definition: mpls_lookup.h:41
struct _unformat_input_t unformat_input_t
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:229
static u32 ip6_compute_flow_hash(const ip6_header_t *ip, flow_hash_config_t flow_hash_config)
Definition: ip6.h:380
mpls_unicast_header_t hdr
Definition: lookup_dpo.c:318
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:287
The FIB DPO provieds;.
Definition: load_balance.h:106
#define PREDICT_FALSE(x)
Definition: clib.h:111
static const char *const lookup_dst_mcast_ip6_nodes[]
Definition: lookup_dpo.c:1420
#define always_inline
Definition: ipsec.h:28
#define MAX_LUKPS_PER_PACKET
If a packet encounters a lookup DPO more than the many times then we assume there is a loop in the fo...
Definition: lookup_dpo.c:35
static void lookup_dpo_add_or_lock_i(fib_node_index_t fib_index, dpo_proto_t proto, lookup_cast_t cast, lookup_input_t input, lookup_table_t table_config, dpo_id_t *dpo)
Definition: lookup_dpo.c:79
void mfib_table_lock(u32 fib_index, fib_protocol_t proto, mfib_source_t source)
Release a reference counting lock on the table.
Definition: mfib_table.c:806
void lookup_dpo_add_or_lock_w_fib_index(fib_node_index_t fib_index, dpo_proto_t proto, lookup_cast_t cast, lookup_input_t input, lookup_table_t table_config, dpo_id_t *dpo)
Definition: lookup_dpo.c:133
load_balance_main_t load_balance_main
The one instance of load-balance main.
Definition: load_balance.c:56
#define vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next, n_left_to_next, bi0, bi1, next0, next1)
Finish enqueueing two buffers forward in the graph.
Definition: buffer_node.h:70
void lookup_dpo_module_init(void)
Definition: lookup_dpo.c:1495
#define vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, bi0, next0)
Finish enqueueing one buffer forward in the graph.
Definition: buffer_node.h:218
#define vlib_get_next_frame(vm, node, next_index, vectors, n_vectors_left)
Get pointer to next frame vector data by (vlib_node_runtime_t, next_index).
Definition: node_funcs.h:338
void fib_table_unlock(u32 fib_index, fib_protocol_t proto, fib_source_t source)
Take a reference counting lock on the table.
Definition: fib_table.c:1291
vlib_main_t * vm
Definition: in2out_ed.c:1810
ip4_fib_mtrie_t mtrie
Mtrie for fast lookups.
Definition: ip4_fib.h:48
static const char *const lookup_src_ip6_nodes[]
Definition: lookup_dpo.c:1381
static const char *const lookup_dst_mpls_nodes[]
Definition: lookup_dpo.c:1403
format_function_t format_ip46_address
Definition: ip46_address.h:50
#define pool_get_aligned(P, E, A)
Allocate an object E from a pool P with alignment A.
Definition: pool.h:231
vlib_node_registration_t lookup_ip6_dst_itf_node
(constructor) VLIB_REGISTER_NODE (lookup_ip6_dst_itf_node)
Definition: lookup_dpo.c:1005
u32 mpls_lookup_to_replicate_edge
The arc/edge from the MPLS lookup node to the MPLS replicate node.
Definition: mpls_lookup.c:29
enum lookup_ip_dst_mcast_next_t_ mfib_forward_lookup_next_t
static clib_error_t * lookup_dpo_show(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: lookup_dpo.c:1454
static void ip4_src_fib_lookup_two(u32 src_fib_index0, u32 src_fib_index1, const ip4_address_t *addr0, const ip4_address_t *addr1, u32 *src_adj_index0, u32 *src_adj_index1)
Definition: lookup_dpo.c:285
static const char *const lookup_dst_from_interface_mpls_nodes[]
Definition: lookup_dpo.c:1441
Adjacency to drop this packet.
Definition: adj.h:53
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169
#define UNFORMAT_END_OF_INPUT
Definition: format.h:145
Lookup trace data.
Definition: lookup_dpo.c:314
u16 n_vectors
Definition: node.h:397
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:218
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:80
enum lookup_table_t_ lookup_table_t
Switch to use the packet&#39;s source or destination address for lookup.
static ip4_fib_t * ip4_fib_get(u32 index)
Get the FIB at the given index.
Definition: ip4_fib.h:113
vlib_node_registration_t lookup_ip4_dst_mcast_node
(constructor) VLIB_REGISTER_NODE (lookup_ip4_dst_mcast_node)
Definition: lookup_dpo.c:1324
static const char *const lookup_input_names[]
Definition: lookup_dpo.c:28
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:30
static const char *const lookup_dst_ip6_nodes[]
Definition: lookup_dpo.c:1398
void vlib_put_next_frame(vlib_main_t *vm, vlib_node_runtime_t *r, u32 next_index, u32 n_vectors_left)
Release pointer to next frame vector data.
Definition: main.c:456
void dpo_set(dpo_id_t *dpo, dpo_type_t type, dpo_proto_t proto, index_t index)
Set/create a DPO ID The DPO will be locked.
Definition: dpo.c:186
vlib_node_registration_t lookup_mpls_dst_node
(constructor) VLIB_REGISTER_NODE (lookup_mpls_dst_node)
Definition: lookup_dpo.c:1188
vlib_main_t vlib_node_runtime_t * node
Definition: in2out_ed.c:1810
enum lookup_input_t_ lookup_input_t
Switch to use the packet&#39;s source or destination address for lookup.
void fib_table_lock(u32 fib_index, fib_protocol_t proto, fib_source_t source)
Release a reference counting lock on the table.
Definition: fib_table.c:1310
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:152
static const char *const lookup_dst_from_interface_ip4_nodes[]
Definition: lookup_dpo.c:1431
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:515
vlib_node_registration_t lookup_ip6_dst_node
(constructor) VLIB_REGISTER_NODE (lookup_ip6_dst_node)
Definition: lookup_dpo.c:991
#define ASSERT(truth)
static void lookup_dpo_mem_show(void)
Definition: lookup_dpo.c:1356
static ip4_fib_mtrie_leaf_t ip4_fib_mtrie_lookup_step_one(const ip4_fib_mtrie_t *m, const ip4_address_t *dst_address)
Lookup step number 1.
Definition: ip4_mtrie.h:224
static const char *const lookup_src_ip4_nodes[]
Definition: lookup_dpo.c:1376
static load_balance_t * load_balance_get(index_t lbi)
Definition: load_balance.h:220
static const char *const lookup_dst_ip4_nodes[]
Definition: lookup_dpo.c:1393
static uword lookup_dpo_ip4_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, int input_src_addr, int table_from_interface)
Definition: lookup_dpo.c:326
u32 fib_table_find_or_create_and_lock(fib_protocol_t proto, u32 table_id, fib_source_t src)
Get the index of the FIB for a Table-ID.
Definition: fib_table.c:1156
vlib_node_registration_t lookup_ip6_dst_mcast_node
(constructor) VLIB_REGISTER_NODE (lookup_ip6_dst_mcast_node)
Definition: lookup_dpo.c:1343
fib_node_index_t ip4_mfib_table_lookup(const ip4_mfib_t *mfib, const ip4_address_t *src, const ip4_address_t *grp, u32 len)
The IPv4 Multicast-FIB.
Definition: ip4_mfib.c:190
mpls_label_t label_exp_s_ttl
Definition: packet.h:33
static const char *const *const lookup_dst_from_interface_nodes[DPO_PROTO_NUM]
Definition: lookup_dpo.c:1446
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:248
lookup_ip_dst_mcast_next_t_
Definition: lookup_dpo.c:1211
u32 flow_hash_config_t
A flow hash configuration is a mask of the flow hash options.
Definition: lookup.h:84
static uword is_pow2(uword x)
Definition: clib.h:235
lookup_table_t lkd_table
Switch to use the table index passed, or the table of the input interface.
Definition: lookup_dpo.h:93
static void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
Definition: trace_funcs.h:55
Definition: defs.h:47
#define DPO_PROTO_NUM
Definition: dpo.h:70
index_t dpoi_index
the index of objects of that type
Definition: dpo.h:186
#define FIB_NODE_INDEX_INVALID
Definition: fib_types.h:31
static u8 * format_lookup_mpls_trace(u8 *s, va_list *args)
Definition: lookup_dpo.c:1163
#define LOOKUP_INPUTS
Definition: lookup_dpo.h:31
#define INDEX_INVALID
Invalid index - used when no index is known blazoned capitals INVALID speak volumes where ~0 does not...
Definition: dpo.h:47
VLIB buffer representation.
Definition: buffer.h:102
u64 uword
Definition: types.h:112
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:244
A collection of combined counters.
Definition: counter.h:188
static index_t mpls_fib_table_forwarding_lookup(u32 mpls_fib_index, const mpls_unicast_header_t *hdr)
Lookup a label and EOS bit in the MPLS_FIB table to retrieve the load-balance index to be used for pa...
Definition: mpls_fib.h:121
u8 * format_dpo_proto(u8 *s, va_list *args)
format a DPO protocol
Definition: dpo.c:178
vlib_node_registration_t lookup_ip4_dst_itf_node
(constructor) VLIB_REGISTER_NODE (lookup_ip4_dst_itf_node)
Definition: lookup_dpo.c:661
static ip6_mfib_t * ip6_mfib_get(u32 index)
Get the FIB at the given index.
Definition: ip6_mfib.h:72
#define vnet_buffer(b)
Definition: buffer.h:408
static const char *const lookup_cast_names[]
Definition: lookup_dpo.c:29
u8 * format_fib_table_name(u8 *s, va_list *ap)
Format the description/name of the table.
Definition: fib_table.c:1334
static void ip4_src_fib_lookup_one(u32 src_fib_index0, const ip4_address_t *addr0, u32 *src_adj_index0)
Definition: lookup_dpo.c:268
void dpo_reset(dpo_id_t *dpo)
reset a DPO ID The DPO will be unlocked.
Definition: dpo.c:232
vlib_node_registration_t lookup_ip4_src_node
(constructor) VLIB_REGISTER_NODE (lookup_ip4_src_node)
Definition: lookup_dpo.c:675
static index_t lookup_dpo_get_index(lookup_dpo_t *lkd)
Definition: lookup_dpo.c:73
u16 dpoi_next_node
The next VLIB node to follow.
Definition: dpo.h:182
u32 table_id
Definition: fib_types.api:118
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:689
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:85
u8 * format_mfib_table_name(u8 *s, va_list *ap)
Format the description/name of the table.
Definition: mfib_table.c:868
fib_node_index_t lkd_fib_index
The FIB, or interface from which to get a FIB, in which to perform the next lookup;.
Definition: lookup_dpo.h:77
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
Definition: defs.h:46
static u8 * format_lookup_trace(u8 *s, va_list *args)
Definition: lookup_dpo.c:626
ip6_address_t dst_address
Definition: ip6_packet.h:307
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:171
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128