aboutsummaryrefslogtreecommitdiffstats
path: root/src/vnet/l2/l2_input.c
blob: 542bd42c4c2f5c0a8226054d62d7f0f79a7783e6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
/*
 * l2_input.c : layer 2 input packet processing
 *
 * Copyright (c) 2013 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <vlib/vlib.h>
#include <vnet/vnet.h>
#include <vnet/pg/pg.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/ethernet/packet.h>
#include <vnet/ip/ip_packet.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/fib/fib_node.h>
#include <vnet/ethernet/arp_packet.h>
#include <vlib/cli.h>
#include <vnet/l2/l2_input.h>
#include <vnet/l2/l2_output.h>
#include <vnet/l2/feat_bitmap.h>
#include <vnet/l2/l2_bvi.h>
#include <vnet/l2/l2_fib.h>
#include <vnet/l2/l2_bd.h>

#include <vppinfra/error.h>
#include <vppinfra/hash.h>
#include <vppinfra/cache.h>

/**
 * @file
 * @brief Interface Input Mode (Layer 2 Cross-Connect or Bridge / Layer 3).
 *
 * This file contains the CLI Commands that modify the input mode of an
 * interface. For interfaces in a Layer 2 cross-connect, all packets
 * received on one interface will be transmitted to the other. For
 * interfaces in a bridge-domain, packets will be forwarded to other
 * interfaces in the same bridge-domain based on destination mac address.
 * For interfaces in Layer 3 mode, the packets will be routed.
 */

#ifndef CLIB_MARCH_VARIANT

/* Feature graph node names */
static char *l2input_feat_names[] = {
#define _(sym,name) name,
  foreach_l2input_feat
#undef _
};

char **
l2input_get_feat_names (void)
{
  return l2input_feat_names;
}

u8 *
format_l2_input_features (u8 * s, va_list * args)
{
  static char *display_names[] = {
#define _(sym,name) #sym,
    foreach_l2input_feat
#undef _
  };
  u32 feature_bitmap = va_arg (*args, u32);
  u32 verbose = va_arg (*args, u32);

  if (feature_bitmap == 0)
    {
      s = format (s, "  none configured");
      return s;
    }

  feature_bitmap &= ~L2INPUT_FEAT_DROP;	/* Not a feature */
  int i;
  for (i = L2INPUT_N_FEAT - 1; i >= 0; i--)
    {
      if (feature_bitmap & (1 << i))
	{
	  if (verbose)
	    s = format (s, "%17s (%s)\n",
			display_names[i], l2input_feat_names[i]);
	  else
	    s = format (s, "%s ", l2input_feat_names[i]);
	}
    }
  return s;
}
#endif /* CLIB_MARCH_VARIANT */

typedef struct
{
  /* per-pkt trace data */
  u8 dst_and_src[12];
  u32 next_index;
  u32 sw_if_index;
} l2input_trace_t;

/* packet trace format function */
static u8 *
format_l2input_trace (u8 * s, va_list * args)
{
  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
  l2input_trace_t *t = va_arg (*args, l2input_trace_t *);

  s = format (s, "l2-input: sw_if_index %d dst %U src %U",
	      t->sw_if_index,
	      format_ethernet_address, t->dst_and_src,
	      format_ethernet_address, t->dst_and_src + 6);
  return s;
}

extern l2input_main_t l2input_main;

#ifndef CLIB_MARCH_VARIANT
l2input_main_t l2input_main;
#endif /* CLIB_MARCH_VARIANT */

#define foreach_l2input_error			\
_(L2INPUT,     "L2 input packets")		\
_(DROP,        "L2 input drops")

typedef enum
{
#define _(sym,str) L2INPUT_ERROR_##sym,
  foreach_l2input_error
#undef _
    L2INPUT_N_ERROR,
} l2input_error_t;

static char *l2input_error_strings[] = {
#define _(sym,string) string,
  foreach_l2input_error
#undef _
};

typedef enum
{				/*  */
  L2INPUT_NEXT_LEARN,
  L2INPUT_NEXT_FWD,
  L2INPUT_NEXT_DROP,
  L2INPUT_N_NEXT,
} l2input_next_t;


static_always_inline void
classify_and_dispatch (l2input_main_t * msm, vlib_buffer_t * b0, u32 * next0)
{
  /*
   * Load L2 input feature struct
   * Load bridge domain struct
   * Parse ethernet header to determine unicast/mcast/broadcast
   * take L2 input stat
   * classify packet as IP/UDP/TCP, control, other
   * mask feature bitmap
   * go to first node in bitmap
   * Later: optimize VTM
   *
   * For L2XC,
   *   set tx sw-if-handle
   */

  u32 feat_mask = ~0;
  u32 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
  ethernet_header_t *h0 = vlib_buffer_get_current (b0);

  /* Get config for the input interface */
  l2_input_config_t *config = vec_elt_at_index (msm->configs, sw_if_index0);

  /* Save split horizon group */
  vnet_buffer (b0)->l2.shg = config->shg;

  /* determine layer2 kind for stat and mask */
  if (PREDICT_FALSE (ethernet_address_cast (h0->dst_address)))
    {
      u8 *l3h0 = (u8 *) h0 + vnet_buffer (b0)->l2.l2_len;

#define get_u16(addr) ( *((u16 *)(addr)) )
      u16 ethertype = clib_net_to_host_u16 (get_u16 (l3h0 - 2));
      u8 protocol = ((ip6_header_t *) l3h0)->protocol;

      /* Disable bridge forwarding (flooding will execute instead if not xconnect) */
      feat_mask &= ~(L2INPUT_FEAT_FWD |
		     L2INPUT_FEAT_UU_FLOOD |
		     L2INPUT_FEAT_UU_FWD | L2INPUT_FEAT_GBP_FWD);

      if (ethertype != ETHERNET_TYPE_ARP)
	feat_mask &= ~(L2INPUT_FEAT_ARP_UFWD);

      /* Disable ARP-term for non-ARP and non-ICMP6 packet */
      if (ethertype != ETHERNET_TYPE_ARP &&
	  (ethertype != ETHERNET_TYPE_IP6 || protocol != IP_PROTOCOL_ICMP6))
	feat_mask &= ~(L2INPUT_FEAT_ARP_TERM);
      /*
       * For packet from BVI - set SHG of ARP request or ICMPv6 neighbor
       * solicitation packet from BVI to 0 so it can also flood to VXLAN
       * tunnels or other ports with the same SHG as that of the BVI.
       */
      else if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] ==
			      L2INPUT_BVI))
	{
	  if (ethertype == ETHERNET_TYPE_ARP)
	    {
	      ethernet_arp_header_t *arp0 = (ethernet_arp_header_t *) l3h0;
	      if (arp0->opcode ==
		  clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_request))
		vnet_buffer (b0)->l2.shg = 0;
	    }
	  else			/* must be ICMPv6 */
	    {
	      ip6_header_t *iph0 = (ip6_header_t *) l3h0;
	      icmp6_neighbor_solicitation_or_advertisement_header_t *ndh0;
	      ndh0 = ip6_next_header (iph0);
	      if (ndh0->icmp.type == ICMP6_neighbor_solicitation)
		vnet_buffer (b0)->l2.shg = 0;
	    }
	}
    }
  else
    {
      /*
       * For packet from BVI - set SHG of unicast packet from BVI to 0 so it
       * is not dropped on output to VXLAN tunnels or other ports with the
       * same SHG as that of the BVI.
       */
      if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] ==
			 L2INPUT_BVI))
	vnet_buffer (b0)->l2.shg = 0;
    }


  if (config->bridge)
    {
      /* Do bridge-domain processing */
      u16 bd_index0 = config->bd_index;
      /* save BD ID for next feature graph nodes */
      vnet_buffer (b0)->l2.bd_index = bd_index0;

      /* Get config for the bridge domain interface */
      l2_bridge_domain_t *bd_config =
	vec_elt_at_index (msm->bd_configs, bd_index0);

      /* Save bridge domain and interface seq_num */
      /* *INDENT-OFF* */
      l2fib_seq_num_t sn = {
        .swif = *l2fib_swif_seq_num(sw_if_index0),
	.bd = bd_config->seq_num,
      };
      /* *INDENT-ON* */
      vnet_buffer (b0)->l2.l2fib_sn = sn.as_u16;;
      vnet_buffer (b0)->l2.bd_age = bd_config->mac_age;

      /*
       * Process bridge domain feature enables.
       * To perform learning/flooding/forwarding, the corresponding bit
       * must be enabled in both the input interface config and in the
       * bridge domain config. In the bd_bitmap, bits for features other
       * than learning/flooding/forwarding should always be set.
       */
      feat_mask = feat_mask & bd_config->feature_bitmap;
    }
  else if (config->xconnect)
    {
      /* Set the output interface */
      vnet_buffer (b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
    }
  else
    feat_mask = L2INPUT_FEAT_DROP;

  /* mask out features from bitmap using packet type and bd config */
  u32 feature_bitmap = config->feature_bitmap & feat_mask;

  /* save for next feature graph nodes */
  vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;

  /* Determine the next node */
  *next0 = feat_bitmap_get_next_node_index (msm->feat_next_node_index,
					    feature_bitmap);
}

static_always_inline uword
l2input_node_inline (vlib_main_t * vm,
		     vlib_node_runtime_t * node, vlib_frame_t * frame,
		     int do_trace)
{
  u32 n_left_from, *from, *to_next;
  l2input_next_t next_index;
  l2input_main_t *msm = &l2input_main;
  vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;

  from = vlib_frame_vector_args (frame);
  n_left_from = frame->n_vectors;	/* number of packets to process */
  next_index = node->cached_next_index;
  vlib_get_buffers (vm, from, bufs, n_left_from);

  while (n_left_from > 0)
    {
      u32 n_left_to_next;

      /* get space to enqueue frame to graph node "next_index" */
      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);

      while (n_left_from >= 8 && n_left_to_next >= 4)
	{
	  u32 next0, next1, next2, next3;
	  u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;

	  /* Prefetch next iteration. */
	  {

	    /* Prefetch the buffer header and packet for the N+2 loop iteration */
	    vlib_prefetch_buffer_header (b[4], LOAD);
	    vlib_prefetch_buffer_header (b[5], LOAD);
	    vlib_prefetch_buffer_header (b[6], LOAD);
	    vlib_prefetch_buffer_header (b[7], LOAD);

	    CLIB_PREFETCH (b[4]->data, CLIB_CACHE_LINE_BYTES, STORE);
	    CLIB_PREFETCH (b[5]->data, CLIB_CACHE_LINE_BYTES, STORE);
	    CLIB_PREFETCH (b[6]->data, CLIB_CACHE_LINE_BYTES, STORE);
	    CLIB_PREFETCH (b[7]->data, CLIB_CACHE_LINE_BYTES, STORE);

	    /*
	     * Don't bother prefetching the bridge-domain config (which
	     * depends on the input config above). Only a small number of
	     * bridge domains are expected. Plus the structure is small
	     * and several fit in a cache line.
	     */
	  }

	  /* speculatively enqueue b0 and b1 to the current next frame */
	  /* bi is "buffer index", b is pointer to the buffer */

	  if (do_trace)
	    {
	      /* RX interface handles */
	      sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
	      sw_if_index1 = vnet_buffer (b[1])->sw_if_index[VLIB_RX];
	      sw_if_index2 = vnet_buffer (b[2])->sw_if_index[VLIB_RX];
	      sw_if_index3 = vnet_buffer (b[3])->sw_if_index[VLIB_RX];

	      if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
		{
		  ethernet_header_t *h0 = vlib_buffer_get_current (b[0]);
		  l2input_trace_t *t =
		    vlib_add_trace (vm, node, b[0], sizeof (*t));
		  t->sw_if_index = sw_if_index0;
		  clib_memcpy_fast (t->dst_and_src, h0->dst_address,
				    sizeof (h0->dst_address) +
				    sizeof (h0->src_address));
		}
	      if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
		{
		  ethernet_header_t *h1 = vlib_buffer_get_current (b[1]);
		  l2input_trace_t *t =
		    vlib_add_trace (vm, node, b[1], sizeof (*t));
		  t->sw_if_index = sw_if_index1;
		  clib_memcpy_fast (t->dst_and_src, h1->dst_address,
				    sizeof (h1->dst_address) +
				    sizeof (h1->src_address));
		}
	      if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
		{
		  ethernet_header_t *h2 = vlib_buffer_get_current (b[2]);
		  l2input_trace_t *t =
		    vlib_add_trace (vm, node, b[2], sizeof (*t));
		  t->sw_if_index = sw_if_index2;
		  clib_memcpy_fast (t->dst_and_src, h2->dst_address,
				    sizeof (h2->dst_address) +
				    sizeof (h2->src_address));
		}
	      if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
		{
		  ethernet_header_t *h3 = vlib_buffer_get_current (b[3]);
		  l2input_trace_t *t =
		    vlib_add_trace (vm, node, b[3], sizeof (*t));
		  t->sw_if_index = sw_if_index3;
		  clib_memcpy_fast (t->dst_and_src, h3->dst_address,
				    sizeof (h3->dst_address) +
				    sizeof (h3->src_address));
		}
	    }

	  classify_and_dispatch (msm, b[0], &next0);
	  classify_and_dispatch (msm, b[1], &next1);
	  //show the better performance when clib_memcpy_fast is put here.
	  clib_memcpy_fast (to_next, from, sizeof (from[0]) * 4);
	  to_next += 4;
	  classify_and_dispatch (msm, b[2], &next2);
	  classify_and_dispatch (msm, b[3], &next3);
	  b += 4;
	  n_left_from -= 4;
	  n_left_to_next -= 4;

	  /* verify speculative enqueues, maybe switch current next frame */
	  /* if next0==next1==next_index then nothing special needs to be done */
	  vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
					   to_next, n_left_to_next,
					   from[0], from[1], from[2], from[3],
					   next0, next1, next2, next3);
	  from += 4;
	}

      while (n_left_from > 0 && n_left_to_next > 0)
	{
	  u32 next0;
	  u32 sw_if_index0;

	  /* speculatively enqueue b0 to the current next frame */

	  if (do_trace && PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
	    {
	      ethernet_header_t *h0 = vlib_buffer_get_current (b[0]);
	      l2input_trace_t *t =
		vlib_add_trace (vm, node, b[0], sizeof (*t));
	      sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
	      t->sw_if_index = sw_if_index0;
	      clib_memcpy_fast (t->dst_and_src, h0->dst_address,
				sizeof (h0->dst_address) +
				sizeof (h0->src_address));
	    }

	  classify_and_dispatch (msm, b[0], &next0);
	  b += 1;
	  to_next[0] = from[0];
	  to_next += 1;
	  n_left_from -= 1;
	  n_left_to_next -= 1;

	  /* verify speculative enqueue, maybe switch current next frame */
	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
					   to_next, n_left_to_next,
					   from[0], next0);
	  from += 1;
	}

      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
    }

  vlib_node_increment_counter (vm, l2input_node.index,
			       L2INPUT_ERROR_L2INPUT, frame->n_vectors);

  return frame->n_vectors;
}

VLIB_NODE_FN (l2input_node) (vlib_main_t * vm,
			     vlib_node_runtime_t * node, vlib_frame_t * frame)
{
  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
    return l2input_node_inline (vm, node, frame, 1 /* do_trace */ );
  return l2input_node_inline (vm, node, frame, 0 /* do_trace */ );
}

/* *INDENT-OFF* */
VLIB_REGISTER_NODE (l2input_node) = {
  .name = "l2-input",
  .vector_size = sizeof (u32),
  .format_trace = format_l2input_trace,
  .format_buffer = format_ethernet_header_with_length,
  .type = VLIB_NODE_TYPE_INTERNAL,

  .n_errors = ARRAY_LEN(l2input_error_strings),
  .error_strings = l2input_error_strings,

  .n_next_nodes = L2INPUT_N_NEXT,

  /* edit / add dispositions here */
  .next_nodes = {
       [L2INPUT_NEXT_LEARN] = "l2-learn",
       [L2INPUT_NEXT_FWD]   = "l2-fwd",
       [L2INPUT_NEXT_DROP]  = "error-drop",
  },
};
/* *INDENT-ON* */

#ifndef CLIB_MARCH_VARIANT
clib_error_t *
l2input_init (vlib_main_t * vm)
{
  l2input_main_t *mp = &l2input_main;

  mp->vlib_main = vm;
  mp->vnet_main = vnet_get_main ();

  /* Get packets RX'd from L2 interfaces */
  ethernet_register_l2_input (vm, l2input_node.index);

  /* Create the config vector */
  vec_validate (mp->configs, 100);
  /* create 100 sw interface entries and zero them */

  /* Initialize the feature next-node indexes */
  feat_bitmap_init_next_nodes (vm,
			       l2input_node.index,
			       L2INPUT_N_FEAT,
			       l2input_get_feat_names (),
			       mp->feat_next_node_index);

  return 0;
}

VLIB_INIT_FUNCTION (l2input_init);


/** Get a pointer to the config for the given interface. */
l2_input_config_t *
l2input_intf_config (u32 sw_if_index)
{
  l2input_main_t *mp = &l2input_main;

  vec_validate (mp->configs, sw_if_index);
  return vec_elt_at_index (mp->configs, sw_if_index);
}

/** Enable (or disable) the feature in the bitmap for the given interface. */
u32
l2input_intf_bitmap_enable (u32 sw_if_index,
			    l2input_feat_masks_t feature_bitmap, u32 enable)
{
  l2_input_config_t *config = l2input_intf_config (sw_if_index);

  if (enable)
    config->feature_bitmap |= feature_bitmap;
  else
    config->feature_bitmap &= ~feature_bitmap;

  return config->feature_bitmap;
}

u32
l2input_set_bridge_features (u32 bd_index, u32 feat_mask, u32 feat_value)
{
  l2_bridge_domain_t *bd_config = l2input_bd_config (bd_index);;
  bd_validate (bd_config);
  bd_config->feature_bitmap =
    (bd_config->feature_bitmap & ~feat_mask) | feat_value;
  return bd_config->feature_bitmap;
}

void
l2input_interface_mac_change (u32 sw_if_index,
			      const u8 * old_address, const u8 * new_address)
{
  /* check if the sw_if_index passed is a BVI in a BD */
  l2_input_config_t *intf_config;

  intf_config = l2input_intf_config (sw_if_index);

  if (intf_config->bridge && intf_config->bvi)
    {
      /* delete and re-add l2fib entry for the bvi interface */
      l2fib_del_entry (old_address, intf_config->bd_index, sw_if_index);
      l2fib_add_entry (new_address,
		       intf_config->bd_index,
		       sw_if_index,
		       L2FIB_ENTRY_RESULT_FLAG_BVI |
		       L2FIB_ENTRY_RESULT_FLAG_STATIC);
    }
}

/**
 * Set the subinterface to run in l2 or l3 mode.
 * For L3 mode, just the sw_if_index is specified.
 * For bridged mode, the bd id and bvi flag are also specified.
 * For xconnect mode, the peer sw_if_index is also specified.
 * Return 0 if ok, or non-0 if there was an error.
 */

u32
set_int_l2_mode (vlib_main_t * vm, vnet_main_t * vnet_main,	/*           */
		 u32 mode,	/* One of L2 modes or back to L3 mode        */
		 u32 sw_if_index,	/* sw interface index                */
		 u32 bd_index,	/* for bridged interface                     */
		 l2_bd_port_type_t port_type,	/* port_type */
		 u32 shg,	/* the bridged interface split horizon group */
		 u32 xc_sw_if_index)	/* peer interface for xconnect       */
{
  l2input_main_t *mp = &l2input_main;
  l2output_main_t *l2om = &l2output_main;
  vnet_main_t *vnm = vnet_get_main ();
  vnet_hw_interface_t *hi;
  l2_output_config_t *out_config;
  l2_input_config_t *config;
  l2_bridge_domain_t *bd_config;
  i32 l2_if_adjust = 0;
  vnet_device_class_t *dev_class;

  hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
  config = l2input_intf_config (sw_if_index);

  if (config->bridge)
    {
      /* Interface is already in bridge mode. Undo the existing config. */
      bd_config = vec_elt_at_index (mp->bd_configs, config->bd_index);

      /* remove interface from flood vector */
      bd_remove_member (bd_config, sw_if_index);

      /* undo any BVI-related config */
      if (bd_config->bvi_sw_if_index == sw_if_index)
	{
	  vnet_sw_interface_t *si;

	  bd_config->bvi_sw_if_index = ~0;
	  config->bvi = 0;

	  /* delete the l2fib entry for the bvi interface */
	  l2fib_del_entry (hi->hw_address, config->bd_index, sw_if_index);

	  /* since this is a no longer BVI interface do not to flood to it */
	  si = vnet_get_sw_interface (vnm, sw_if_index);
	  si->flood_class = VNET_FLOOD_CLASS_NO_FLOOD;
	}
      if (bd_config->uu_fwd_sw_if_index == sw_if_index)
	{
	  bd_config->uu_fwd_sw_if_index = ~0;
	  bd_config->feature_bitmap &= ~L2INPUT_FEAT_UU_FWD;
	}

      /* Clear MACs learned on the interface */
      if ((config->feature_bitmap & L2INPUT_FEAT_LEARN) ||
	  (bd_config->feature_bitmap & L2INPUT_FEAT_LEARN))
	l2fib_flush_int_mac (vm, sw_if_index);

      l2_if_adjust--;
    }
  else if (config->xconnect)
    {
      l2_if_adjust--;
    }

  /* Make sure vector is big enough */
  vec_validate_init_empty (l2om->output_node_index_vec, sw_if_index,
			   L2OUTPUT_NEXT_DROP);

  /* Initialize the l2-input configuration for the interface */
  if (mode == MODE_L3)
    {
      /* Set L2 config to BD index 0 so that if any packet accidentally
       * came in on L2 path, it will be dropped in BD 0 */
      config->xconnect = 0;
      config->bridge = 0;
      config->shg = 0;
      config->bd_index = 0;
      config->feature_bitmap = L2INPUT_FEAT_DROP;

      /* Clear L2 output config */
      out_config = l2output_intf_config (sw_if_index);
      clib_memset (out_config, 0, sizeof (l2_output_config_t));

      /* Make sure any L2-output packet to this interface now in L3 mode is
       * dropped. This may happen if L2 FIB MAC entry is stale */
      l2om->output_node_index_vec[sw_if_index] = L2OUTPUT_NEXT_BAD_INTF;
    }
  else
    {
      /* Add or update l2-output node next-arc and output_node_index_vec table
       * for the interface */
      l2output_create_output_node_mapping (vm, vnet_main, sw_if_index);

      if (mode == MODE_L2_BRIDGE)
	{
	  u8 member_flags;

	  /*
	   * Remove a check that the interface must be an Ethernet.
	   * Specifically so we can bridge to L3 tunnel interfaces.
	   * Here's the check:
	   * if (hi->hw_class_index != ethernet_hw_interface_class.index)
	   *
	   */
	  if (!hi)
	    return MODE_ERROR_ETH;	/* non-ethernet */

	  config->xconnect = 0;
	  config->bridge = 1;
	  config->bd_index = bd_index;
	  *l2fib_valid_swif_seq_num (sw_if_index) += 1;

	  /*
	   * Enable forwarding, flooding, learning and ARP termination by default
	   * (note that ARP term is disabled on BD feature bitmap by default)
	   */
	  config->feature_bitmap |= (L2INPUT_FEAT_FWD |
				     L2INPUT_FEAT_UU_FLOOD |
				     L2INPUT_FEAT_UU_FWD |
				     L2INPUT_FEAT_FLOOD |
				     L2INPUT_FEAT_LEARN |
				     L2INPUT_FEAT_ARP_UFWD |
				     L2INPUT_FEAT_ARP_TERM);

	  /* Make sure last-chance drop is configured */
	  config->feature_bitmap |= L2INPUT_FEAT_DROP;

	  /* Make sure xconnect is disabled */
	  config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT;

	  /* Set up bridge domain */
	  bd_config = l2input_bd_config (bd_index);
	  bd_validate (bd_config);

	  /* TODO: think: add l2fib entry even for non-bvi interface? */

	  /* Do BVI interface initializations */
	  if (L2_BD_PORT_TYPE_BVI == port_type)
	    {
	      vnet_sw_interface_t *si;

	      /* ensure BD has no bvi interface (or replace that one with this??) */
	      if (bd_config->bvi_sw_if_index != ~0)
		{
		  return MODE_ERROR_BVI_DEF;	/* bd already has a bvi interface */
		}
	      bd_config->bvi_sw_if_index = sw_if_index;
	      config->bvi = 1;

	      /* create the l2fib entry for the bvi interface */
	      l2fib_add_entry (hi->hw_address, bd_index, sw_if_index,
			       L2FIB_ENTRY_RESULT_FLAG_BVI |
			       L2FIB_ENTRY_RESULT_FLAG_STATIC);

	      /* Disable learning by default. no use since l2fib entry is static. */
	      config->feature_bitmap &= ~L2INPUT_FEAT_LEARN;

	      /* since this is a BVI interface we want to flood to it */
	      si = vnet_get_sw_interface (vnm, sw_if_index);
	      si->flood_class = VNET_FLOOD_CLASS_BVI;
	      member_flags = L2_FLOOD_MEMBER_BVI;
	    }
	  else if (L2_BD_PORT_TYPE_UU_FWD == port_type)
	    {
	      bd_config->uu_fwd_sw_if_index = sw_if_index;
	      bd_config->feature_bitmap |= L2INPUT_FEAT_UU_FWD;
	    }
	  else
	    {
	      member_flags = L2_FLOOD_MEMBER_NORMAL;
	    }

	  if (L2_BD_PORT_TYPE_NORMAL == port_type ||
	      L2_BD_PORT_TYPE_BVI == port_type)
	    {
	      /* Add interface to bridge-domain flood vector */
	      l2_flood_member_t member = {
		.sw_if_index = sw_if_index,
		.flags = member_flags,
		.shg = shg,
	      };
	      bd_add_member (bd_config, &member);
	    }
	}
      else if (mode == MODE_L2_XC)
	{
	  config->xconnect = 1;
	  config->bridge = 0;
	  config->output_sw_if_index = xc_sw_if_index;

	  /* Make sure last-chance drop is configured */
	  config->feature_bitmap |= L2INPUT_FEAT_DROP;

	  /* Make sure bridging features are disabled */
	  config->feature_bitmap &=
	    ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);

	  config->feature_bitmap |= L2INPUT_FEAT_XCONNECT;
	  shg = 0;		/* not used in xconnect */
	}
      else if (mode == MODE_L2_CLASSIFY)
	{
	  config->xconnect = 1;
	  config->bridge = 0;
	  config->output_sw_if_index = xc_sw_if_index;

	  /* Make sure last-chance drop is configured */
	  config->feature_bitmap |=
	    L2INPUT_FEAT_DROP | L2INPUT_FEAT_INPUT_CLASSIFY;

	  /* Make sure bridging features are disabled */
	  config->feature_bitmap &=
	    ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
	  shg = 0;		/* not used in xconnect */
	}

      /* set up split-horizon group and set output feature bit */
      config->shg = shg;
      out_config = l2output_intf_config (sw_if_index);
      out_config->shg = shg;
      out_config->feature_bitmap |= L2OUTPUT_FEAT_OUTPUT;

      /*
       * Test: remove this when non-IP features can be configured.
       * Enable a non-IP feature to test IP feature masking
       * config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT;
       */

      l2_if_adjust++;
    }

  /* Adjust count of L2 interfaces */
  hi->l2_if_count += l2_if_adjust;

  if (hi->hw_class_index == ethernet_hw_interface_class.index)
    {
      if ((hi->l2_if_count == 1) && (l2_if_adjust == 1))
	{
	  /* Just added first L2 interface on this port
	   * Set promiscuous mode on the l2 interface */
	  ethernet_set_flags (vnet_main, hi->hw_if_index,
			      ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
	}
      else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1))
	{
	  /* Just removed only L2 subinterface on this port
	   * Disable promiscuous mode on the l2 interface */
	  ethernet_set_flags (vnet_main, hi->hw_if_index,
			      /*ETHERNET_INTERFACE_FLAG_DEFAULT_L3 */ 0);

	}
    }

  /* Set up the L2/L3 flag in the interface parsing tables */
  ethernet_sw_interface_set_l2_mode (vnm, sw_if_index, (mode != MODE_L3));

  dev_class = vnet_get_device_class (vnet_main, hi->dev_class_index);
  if (dev_class->set_l2_mode_function)
    {
      dev_class->set_l2_mode_function (vnet_main, hi, l2_if_adjust);
    }

  return 0;
}
#endif /* CLIB_MARCH_VARIANT */

/**
 * Set subinterface in bridging mode with a bridge-domain ID.
 * The CLI format is:
 *   set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group]
 */
static clib_error_t *
int_l2_bridge (vlib_main_t * vm,
	       unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  l2_bd_port_type_t port_type;
  clib_error_t *error = 0;
  u32 bd_index, bd_id;
  u32 sw_if_index;
  u32 rc;
  u32 shg;

  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
    {
      error = clib_error_return (0, "unknown interface `%U'",
				 format_unformat_error, input);
      goto done;
    }

  if (!unformat (input, "%d", &bd_id))
    {
      error = clib_error_return (0, "expected bridge domain ID `%U'",
				 format_unformat_error, input);
      goto done;
    }

  if (bd_id > L2_BD_ID_MAX)
    {
      error = clib_error_return (0, "bridge domain ID exceed 16M limit",
				 format_unformat_error, input);
      goto done;
    }
  bd_index = bd_find_or_add_bd_index (&bd_main, bd_id);

  /* optional bvi  */
  port_type = L2_BD_PORT_TYPE_NORMAL;
  if (unformat (input, "bvi"))
    port_type = L2_BD_PORT_TYPE_BVI;
  if (unformat (input, "uu-fwd"))
    port_type = L2_BD_PORT_TYPE_UU_FWD;

  /* optional split horizon group */
  shg = 0;
  (void) unformat (input, "%d", &shg);

  /* set the interface mode */
  if ((rc =
       set_int_l2_mode (vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index,
			port_type, shg, 0)))
    {
      if (rc == MODE_ERROR_ETH)
	{
	  error = clib_error_return (0, "bridged interface must be ethernet",
				     format_unformat_error, input);
	}
      else if (rc == MODE_ERROR_BVI_DEF)
	{
	  error =
	    clib_error_return (0, "bridge-domain already has a bvi interface",
			       format_unformat_error, input);
	}
      else
	{
	  error = clib_error_return (0, "invalid configuration for interface",
				     format_unformat_error, input);
	}
      goto done;
    }

done:
  return error;
}

/*?
 * Use this command put an interface into Layer 2 bridge domain. If a
 * bridge-domain with the provided bridge-domain-id does not exist, it
 * will be created. Interfaces in a bridge-domain forward packets to
 * other interfaces in the same bridge-domain based on destination mac
 * address. To remove an interface from a the Layer 2 bridge domain,
 * put the interface in a different mode, for example Layer 3 mode.
 *
 * Optionally, an interface can be added to a Layer 2 bridge-domain as
 * a Bridged Virtual Interface (bvi). Only one interface in a Layer 2
 * bridge-domain can be a bvi.
 *
 * Optionally, a split-horizon group can also be specified. This defaults
 * to 0 if not specified.
 *
 * @cliexpar
 * Example of how to configure a Layer 2 bridge-domain with three
 * interfaces (where 200 is the bridge-domain-id):
 * @cliexcmd{set interface l2 bridge GigabitEthernet0/8/0.200 200}
 * This interface is added a BVI interface:
 * @cliexcmd{set interface l2 bridge GigabitEthernet0/9/0.200 200 bvi}
 * This interface also has a split-horizon group of 1 specified:
 * @cliexcmd{set interface l2 bridge GigabitEthernet0/a/0.200 200 1}
 * Example of how to remove an interface from a Layer2 bridge-domain:
 * @cliexcmd{set interface l3 GigabitEthernet0/a/0.200}
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = {
  .path = "set interface l2 bridge",
  .short_help = "set interface l2 bridge <interface> <bridge-domain-id> [bvi|uu-fwd] [shg]",
  .function = int_l2_bridge,
};
/* *INDENT-ON* */

/**
 * Set subinterface in xconnect mode with another interface.
 * The CLI format is:
 *   set interface l2 xconnect <interface> <peer interface>
 */
static clib_error_t *
int_l2_xc (vlib_main_t * vm,
	   unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  clib_error_t *error = 0;
  u32 sw_if_index;
  u32 xc_sw_if_index;

  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
    {
      error = clib_error_return (0, "unknown interface `%U'",
				 format_unformat_error, input);
      goto done;
    }

  if (!unformat_user
      (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index))
    {
      error = clib_error_return (0, "unknown peer interface `%U'",
				 format_unformat_error, input);
      goto done;
    }

  /* set the interface mode */
  if (set_int_l2_mode
      (vm, vnm, MODE_L2_XC, sw_if_index, 0, L2_BD_PORT_TYPE_NORMAL,
       0, xc_sw_if_index))
    {
      error = clib_error_return (0, "invalid configuration for interface",
				 format_unformat_error, input);
      goto done;
    }

done:
  return error;
}

/*?
 * Use this command put an interface into Layer 2 cross-connect mode.
 * Both interfaces must be in this mode for bi-directional traffic. All
 * packets received on one interface will be transmitted to the other.
 * To remove the Layer 2 cross-connect, put the interface in a different
 * mode, for example Layer 3 mode.
 *
 * @cliexpar
 * Example of how to configure a Layer2 cross-connect between two interfaces:
 * @cliexcmd{set interface l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300}
 * @cliexcmd{set interface l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300}
 * Example of how to remove a Layer2 cross-connect:
 * @cliexcmd{set interface l3 GigabitEthernet0/8/0.300}
 * @cliexcmd{set interface l3 GigabitEthernet0/9/0.300}
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (int_l2_xc_cli, static) = {
  .path = "set interface l2 xconnect",
  .short_help = "set interface l2 xconnect <interface> <peer interface>",
  .function = int_l2_xc,
};
/* *INDENT-ON* */

/**
 * Set subinterface in L3 mode.
 * The CLI format is:
 *   set interface l3 <interface>
 */
static clib_error_t *
int_l3 (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  clib_error_t *error = 0;
  u32 sw_if_index;

  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
    {
      error = clib_error_return (0, "unknown interface `%U'",
				 format_unformat_error, input);
      goto done;
    }

  /* set the interface mode */
  if (set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0,
		       L2_BD_PORT_TYPE_NORMAL, 0, 0))
    {
      error = clib_error_return (0, "invalid configuration for interface",
				 format_unformat_error, input);
      goto done;
    }

done:
  return error;
}

/*?
 * Modify the packet processing mode of the interface to Layer 3, which
 * implies packets will be routed. This is the default mode of an interface.
 * Use this command to remove an interface from a Layer 2 cross-connect or a
 * Layer 2 bridge.
 *
 * @cliexpar
 * Example of how to set the mode of an interface to Layer 3:
 * @cliexcmd{set interface l3 GigabitEthernet0/8/0.200}
?*/
/* *INDENT-OFF* */
     VLIB_CLI_COMMAND (int_l3_cli, static) = {
  .path = "set interface l3",
  .short_help = "set interface l3 <interface>",
  .function = int_l3,
};
/* *INDENT-ON* */

/**
 * Show interface mode.
 * The CLI format is:
 *    show mode [<if-name1> <if-name2> ...]
 */
static clib_error_t *
show_int_mode (vlib_main_t * vm,
	       unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vnet_main_t *vnm = vnet_get_main ();
  clib_error_t *error = 0;
  char *mode;
  u8 *args;
  vnet_interface_main_t *im = &vnm->interface_main;

  vnet_sw_interface_t *si, *sis = 0;
  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
    {
      u32 sw_if_index;

      /* See if user wants to show specific interface */
      if (unformat
	  (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
	{
	  si = pool_elt_at_index (im->sw_interfaces, sw_if_index);
	  vec_add1 (sis, si[0]);
	}
      else
	{
	  error = clib_error_return (0, "unknown input `%U'",
				     format_unformat_error, input);
	  goto done;
	}
    }

  if (vec_len (sis) == 0)	/* Get all interfaces */
    {
      /* Gather interfaces. */
      sis = vec_new (vnet_sw_interface_t, pool_elts (im->sw_interfaces));
      _vec_len (sis) = 0;
      /* *INDENT-OFF* */
      pool_foreach (si, im->sw_interfaces, ({ vec_add1 (sis, si[0]); }));
      /* *INDENT-ON* */
    }

  vec_foreach (si, sis)
  {
    l2_input_config_t *config = l2input_intf_config (si->sw_if_index);
    if (config->bridge)
      {
	u32 bd_id;
	mode = "l2 bridge";
	bd_id = l2input_main.bd_configs[config->bd_index].bd_id;

	args = format (0, "bd_id %d%s%d", bd_id,
		       config->bvi ? " bvi shg " : " shg ", config->shg);
      }
    else if (config->xconnect)
      {
	mode = "l2 xconnect";
	args = format (0, "%U",
		       format_vnet_sw_if_index_name,
		       vnm, config->output_sw_if_index);
      }
    else
      {
	mode = "l3";
	args = format (0, " ");
      }
    vlib_cli_output (vm, "%s %U %v\n",
		     mode,
		     format_vnet_sw_if_index_name,
		     vnm, si->sw_if_index, args);
    vec_free (args);
  }

done:
  vec_free (sis);

  return error;
}

/*?
 * Show the packet processing mode (Layer2 cross-connect, Layer 2 bridge,
 * Layer 3 routed) of all interfaces and sub-interfaces, or limit the
 * output to just the provided list of interfaces and sub-interfaces.
 * The output shows the mode, the interface, and if the interface is
 * a member of a bridge, the bridge-domain-id and the split horizon group (shg).
 *
 * @cliexpar
 * Example of displaying the mode of all interfaces:
 * @cliexstart{show mode}
 * l3 local0
 * l3 GigabitEthernet0/8/0
 * l3 GigabitEthernet0/9/0
 * l3 GigabitEthernet0/a/0
 * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
 * l2 bridge GigabitEthernet0/9/0.200 bd_id 200 shg 0
 * l2 bridge GigabitEthernet0/a/0.200 bd_id 200 shg 0
 * l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300
 * l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300
 * @cliexend
 * Example of displaying the mode of a selected list of interfaces:
 * @cliexstart{show mode GigabitEthernet0/8/0 GigabitEthernet0/8/0.200}
 * l3 GigabitEthernet0/8/0
 * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
 * @cliexend
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (show_l2_mode, static) = {
  .path = "show mode",
  .short_help = "show mode [<if-name1> <if-name2> ...]",
  .function = show_int_mode,
};
/* *INDENT-ON* */

#define foreach_l2_init_function                \
_(feat_bitmap_drop_init)                        \
_(l2fib_init)                                   \
_(l2_input_classify_init)                             \
_(l2bd_init)                                    \
_(l2fwd_init)                                   \
_(l2_in_out_acl_init)                           \
_(l2input_init)                                 \
_(l2_vtr_init)                                  \
_(l2_invtr_init)                                \
_(l2_efp_filter_init)                           \
_(l2learn_init)                                 \
_(l2flood_init)                                 \
_(l2output_init)				\
_(l2_patch_init)				\
_(l2_xcrw_init)

#ifndef CLIB_MARCH_VARIANT
clib_error_t *
l2_init (vlib_main_t * vm)
{
  clib_error_t *error;

#define _(a) do {                                                       \
  if ((error = vlib_call_init_function (vm, a))) return error; }        \
while (0);
  foreach_l2_init_function;
#undef _
  return 0;
}

VLIB_INIT_FUNCTION (l2_init);
#endif /* CLIB_MARCH_VARIANT */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */