FD.io VPP  v20.01-48-g3e0dafb74
Vector Packet Processing
l2_input.c
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1 /*
2  * l2_input.c : layer 2 input packet processing
3  *
4  * Copyright (c) 2013 Cisco and/or its affiliates.
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #include <vlib/vlib.h>
19 #include <vnet/vnet.h>
20 #include <vnet/pg/pg.h>
21 #include <vnet/ethernet/ethernet.h>
22 #include <vnet/ethernet/packet.h>
23 #include <vnet/ip/ip_packet.h>
24 #include <vnet/ip/ip4_packet.h>
25 #include <vnet/ip/ip6_packet.h>
26 #include <vnet/fib/fib_node.h>
28 #include <vlib/cli.h>
29 #include <vnet/l2/l2_input.h>
30 #include <vnet/l2/l2_output.h>
31 #include <vnet/l2/feat_bitmap.h>
32 #include <vnet/l2/l2_bvi.h>
33 #include <vnet/l2/l2_fib.h>
34 #include <vnet/l2/l2_bd.h>
35 
36 #include <vppinfra/error.h>
37 #include <vppinfra/hash.h>
38 #include <vppinfra/cache.h>
39 
40 /**
41  * @file
42  * @brief Interface Input Mode (Layer 2 Cross-Connect or Bridge / Layer 3).
43  *
44  * This file contains the CLI Commands that modify the input mode of an
45  * interface. For interfaces in a Layer 2 cross-connect, all packets
46  * received on one interface will be transmitted to the other. For
47  * interfaces in a bridge-domain, packets will be forwarded to other
48  * interfaces in the same bridge-domain based on destination mac address.
49  * For interfaces in Layer 3 mode, the packets will be routed.
50  */
51 
52 #ifndef CLIB_MARCH_VARIANT
53 
54 /* Feature graph node names */
55 static char *l2input_feat_names[] = {
56 #define _(sym,name) name,
58 #undef _
59 };
60 
61 char **
63 {
64  return l2input_feat_names;
65 }
66 
67 u8 *
68 format_l2_input_features (u8 * s, va_list * args)
69 {
70  static char *display_names[] = {
71 #define _(sym,name) #sym,
73 #undef _
74  };
75  u32 feature_bitmap = va_arg (*args, u32);
76  u32 verbose = va_arg (*args, u32);
77 
78  if (feature_bitmap == 0)
79  {
80  s = format (s, " none configured");
81  return s;
82  }
83 
84  feature_bitmap &= ~L2INPUT_FEAT_DROP; /* Not a feature */
85  int i;
86  for (i = L2INPUT_N_FEAT - 1; i >= 0; i--)
87  {
88  if (feature_bitmap & (1 << i))
89  {
90  if (verbose)
91  s = format (s, "%17s (%s)\n",
92  display_names[i], l2input_feat_names[i]);
93  else
94  s = format (s, "%s ", l2input_feat_names[i]);
95  }
96  }
97  return s;
98 }
99 #endif /* CLIB_MARCH_VARIANT */
100 
101 typedef struct
102 {
103  /* per-pkt trace data */
104  u8 src[6];
105  u8 dst[6];
109 
110 /* packet trace format function */
111 static u8 *
112 format_l2input_trace (u8 * s, va_list * args)
113 {
114  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
115  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
116  l2input_trace_t *t = va_arg (*args, l2input_trace_t *);
117 
118  s = format (s, "l2-input: sw_if_index %d dst %U src %U",
119  t->sw_if_index,
122  return s;
123 }
124 
126 
127 #ifndef CLIB_MARCH_VARIANT
129 #endif /* CLIB_MARCH_VARIANT */
130 
131 #define foreach_l2input_error \
132 _(L2INPUT, "L2 input packets") \
133 _(DROP, "L2 input drops")
134 
135 typedef enum
136 {
137 #define _(sym,str) L2INPUT_ERROR_##sym,
139 #undef _
142 
143 static char *l2input_error_strings[] = {
144 #define _(sym,string) string,
146 #undef _
147 };
148 
149 typedef enum
150 { /* */
156 
157 
160 {
161  /*
162  * Load L2 input feature struct
163  * Load bridge domain struct
164  * Parse ethernet header to determine unicast/mcast/broadcast
165  * take L2 input stat
166  * classify packet as IP/UDP/TCP, control, other
167  * mask feature bitmap
168  * go to first node in bitmap
169  * Later: optimize VTM
170  *
171  * For L2XC,
172  * set tx sw-if-handle
173  */
174 
175  u32 feat_mask = ~0;
176  u32 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
178 
179  /* Get config for the input interface */
180  l2_input_config_t *config = vec_elt_at_index (msm->configs, sw_if_index0);
181 
182  /* Save split horizon group */
183  vnet_buffer (b0)->l2.shg = config->shg;
184 
185  /* determine layer2 kind for stat and mask */
187  {
188  u8 *l3h0 = (u8 *) h0 + vnet_buffer (b0)->l2.l2_len;
189 
190 #define get_u16(addr) ( *((u16 *)(addr)) )
191  u16 ethertype = clib_net_to_host_u16 (get_u16 (l3h0 - 2));
192  u8 protocol = ((ip6_header_t *) l3h0)->protocol;
193 
194  /* Disable bridge forwarding (flooding will execute instead if not xconnect) */
195  feat_mask &= ~(L2INPUT_FEAT_FWD |
196  L2INPUT_FEAT_UU_FLOOD |
197  L2INPUT_FEAT_UU_FWD | L2INPUT_FEAT_GBP_FWD);
198 
199  if (ethertype != ETHERNET_TYPE_ARP)
200  feat_mask &= ~(L2INPUT_FEAT_ARP_UFWD);
201 
202  /* Disable ARP-term for non-ARP and non-ICMP6 packet */
203  if (ethertype != ETHERNET_TYPE_ARP &&
204  (ethertype != ETHERNET_TYPE_IP6 || protocol != IP_PROTOCOL_ICMP6))
205  feat_mask &= ~(L2INPUT_FEAT_ARP_TERM);
206  /*
207  * For packet from BVI - set SHG of ARP request or ICMPv6 neighbor
208  * solicitation packet from BVI to 0 so it can also flood to VXLAN
209  * tunnels or other ports with the same SHG as that of the BVI.
210  */
211  else if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] ==
212  L2INPUT_BVI))
213  {
214  if (ethertype == ETHERNET_TYPE_ARP)
215  {
217  if (arp0->opcode ==
218  clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_request))
219  vnet_buffer (b0)->l2.shg = 0;
220  }
221  else /* must be ICMPv6 */
222  {
223  ip6_header_t *iph0 = (ip6_header_t *) l3h0;
224  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh0;
225  ndh0 = ip6_next_header (iph0);
226  if (ndh0->icmp.type == ICMP6_neighbor_solicitation)
227  vnet_buffer (b0)->l2.shg = 0;
228  }
229  }
230  }
231  else
232  {
233  /*
234  * For packet from BVI - set SHG of unicast packet from BVI to 0 so it
235  * is not dropped on output to VXLAN tunnels or other ports with the
236  * same SHG as that of the BVI.
237  */
239  L2INPUT_BVI))
240  vnet_buffer (b0)->l2.shg = 0;
241  }
242 
243 
244  if (config->bridge)
245  {
246  /* Do bridge-domain processing */
247  u16 bd_index0 = config->bd_index;
248  /* save BD ID for next feature graph nodes */
249  vnet_buffer (b0)->l2.bd_index = bd_index0;
250 
251  /* Get config for the bridge domain interface */
252  l2_bridge_domain_t *bd_config =
253  vec_elt_at_index (msm->bd_configs, bd_index0);
254 
255  /* Save bridge domain and interface seq_num */
256  /* *INDENT-OFF* */
257  l2fib_seq_num_t sn = {
258  .swif = *l2fib_swif_seq_num(sw_if_index0),
259  .bd = bd_config->seq_num,
260  };
261  /* *INDENT-ON* */
262  vnet_buffer (b0)->l2.l2fib_sn = sn.as_u16;;
263  vnet_buffer (b0)->l2.bd_age = bd_config->mac_age;
264 
265  /*
266  * Process bridge domain feature enables.
267  * To perform learning/flooding/forwarding, the corresponding bit
268  * must be enabled in both the input interface config and in the
269  * bridge domain config. In the bd_bitmap, bits for features other
270  * than learning/flooding/forwarding should always be set.
271  */
272  feat_mask = feat_mask & bd_config->feature_bitmap;
273  }
274  else if (config->xconnect)
275  {
276  /* Set the output interface */
277  vnet_buffer (b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
278  }
279  else
280  feat_mask = L2INPUT_FEAT_DROP;
281 
282  /* mask out features from bitmap using packet type and bd config */
283  u32 feature_bitmap = config->feature_bitmap & feat_mask;
284 
285  /* save for next feature graph nodes */
286  vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;
287 
288  /* Determine the next node */
290  feature_bitmap);
291 }
292 
296  int do_trace)
297 {
298  u32 n_left_from, *from, *to_next;
299  l2input_next_t next_index;
301 
302  from = vlib_frame_vector_args (frame);
303  n_left_from = frame->n_vectors; /* number of packets to process */
304  next_index = node->cached_next_index;
305 
306  while (n_left_from > 0)
307  {
308  u32 n_left_to_next;
309 
310  /* get space to enqueue frame to graph node "next_index" */
311  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
312 
313  while (n_left_from >= 8 && n_left_to_next >= 4)
314  {
315  u32 bi0, bi1, bi2, bi3;
316  vlib_buffer_t *b0, *b1, *b2, *b3;
317  u32 next0, next1, next2, next3;
318  u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
319 
320  /* Prefetch next iteration. */
321  {
322  vlib_buffer_t *p4, *p5, *p6, *p7;
323 
324  p4 = vlib_get_buffer (vm, from[4]);
325  p5 = vlib_get_buffer (vm, from[5]);
326  p6 = vlib_get_buffer (vm, from[6]);
327  p7 = vlib_get_buffer (vm, from[7]);
328 
329  /* Prefetch the buffer header and packet for the N+2 loop iteration */
330  vlib_prefetch_buffer_header (p4, LOAD);
331  vlib_prefetch_buffer_header (p5, LOAD);
332  vlib_prefetch_buffer_header (p6, LOAD);
333  vlib_prefetch_buffer_header (p7, LOAD);
334 
339 
340  /*
341  * Don't bother prefetching the bridge-domain config (which
342  * depends on the input config above). Only a small number of
343  * bridge domains are expected. Plus the structure is small
344  * and several fit in a cache line.
345  */
346  }
347 
348  /* speculatively enqueue b0 and b1 to the current next frame */
349  /* bi is "buffer index", b is pointer to the buffer */
350  to_next[0] = bi0 = from[0];
351  to_next[1] = bi1 = from[1];
352  to_next[2] = bi2 = from[2];
353  to_next[3] = bi3 = from[3];
354  from += 4;
355  to_next += 4;
356  n_left_from -= 4;
357  n_left_to_next -= 4;
358 
359  b0 = vlib_get_buffer (vm, bi0);
360  b1 = vlib_get_buffer (vm, bi1);
361  b2 = vlib_get_buffer (vm, bi2);
362  b3 = vlib_get_buffer (vm, bi3);
363 
364  if (do_trace)
365  {
366  /* RX interface handles */
367  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
368  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
369  sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_RX];
370  sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_RX];
371 
372  if (b0->flags & VLIB_BUFFER_IS_TRACED)
373  {
375  l2input_trace_t *t =
376  vlib_add_trace (vm, node, b0, sizeof (*t));
377  t->sw_if_index = sw_if_index0;
378  clib_memcpy_fast (t->src, h0->src_address, 6);
379  clib_memcpy_fast (t->dst, h0->dst_address, 6);
380  }
381  if (b1->flags & VLIB_BUFFER_IS_TRACED)
382  {
384  l2input_trace_t *t =
385  vlib_add_trace (vm, node, b1, sizeof (*t));
386  t->sw_if_index = sw_if_index1;
387  clib_memcpy_fast (t->src, h1->src_address, 6);
388  clib_memcpy_fast (t->dst, h1->dst_address, 6);
389  }
390  if (b2->flags & VLIB_BUFFER_IS_TRACED)
391  {
393  l2input_trace_t *t =
394  vlib_add_trace (vm, node, b2, sizeof (*t));
395  t->sw_if_index = sw_if_index2;
396  clib_memcpy_fast (t->src, h2->src_address, 6);
397  clib_memcpy_fast (t->dst, h2->dst_address, 6);
398  }
399  if (b3->flags & VLIB_BUFFER_IS_TRACED)
400  {
402  l2input_trace_t *t =
403  vlib_add_trace (vm, node, b3, sizeof (*t));
404  t->sw_if_index = sw_if_index3;
405  clib_memcpy_fast (t->src, h3->src_address, 6);
406  clib_memcpy_fast (t->dst, h3->dst_address, 6);
407  }
408  }
409 
410  classify_and_dispatch (msm, b0, &next0);
411  classify_and_dispatch (msm, b1, &next1);
412  classify_and_dispatch (msm, b2, &next2);
413  classify_and_dispatch (msm, b3, &next3);
414 
415  /* verify speculative enqueues, maybe switch current next frame */
416  /* if next0==next1==next_index then nothing special needs to be done */
417  vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
418  to_next, n_left_to_next,
419  bi0, bi1, bi2, bi3,
420  next0, next1, next2, next3);
421  }
422 
423  while (n_left_from > 0 && n_left_to_next > 0)
424  {
425  u32 bi0;
426  vlib_buffer_t *b0;
427  u32 next0;
428  u32 sw_if_index0;
429 
430  /* speculatively enqueue b0 to the current next frame */
431  bi0 = from[0];
432  to_next[0] = bi0;
433  from += 1;
434  to_next += 1;
435  n_left_from -= 1;
436  n_left_to_next -= 1;
437 
438  b0 = vlib_get_buffer (vm, bi0);
439 
440  if (do_trace && PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
441  {
443  l2input_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
444  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
445  t->sw_if_index = sw_if_index0;
446  clib_memcpy_fast (t->src, h0->src_address, 6);
447  clib_memcpy_fast (t->dst, h0->dst_address, 6);
448  }
449 
450  classify_and_dispatch (msm, b0, &next0);
451 
452  /* verify speculative enqueue, maybe switch current next frame */
453  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
454  to_next, n_left_to_next,
455  bi0, next0);
456  }
457 
458  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
459  }
460 
462  L2INPUT_ERROR_L2INPUT, frame->n_vectors);
463 
464  return frame->n_vectors;
465 }
466 
469 {
470  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
471  return l2input_node_inline (vm, node, frame, 1 /* do_trace */ );
472  return l2input_node_inline (vm, node, frame, 0 /* do_trace */ );
473 }
474 
475 /* *INDENT-OFF* */
477  .name = "l2-input",
478  .vector_size = sizeof (u32),
479  .format_trace = format_l2input_trace,
480  .format_buffer = format_ethernet_header_with_length,
482 
483  .n_errors = ARRAY_LEN(l2input_error_strings),
484  .error_strings = l2input_error_strings,
485 
486  .n_next_nodes = L2INPUT_N_NEXT,
487 
488  /* edit / add dispositions here */
489  .next_nodes = {
490  [L2INPUT_NEXT_LEARN] = "l2-learn",
491  [L2INPUT_NEXT_FWD] = "l2-fwd",
492  [L2INPUT_NEXT_DROP] = "error-drop",
493  },
494 };
495 /* *INDENT-ON* */
496 
497 #ifndef CLIB_MARCH_VARIANT
498 clib_error_t *
500 {
502 
503  mp->vlib_main = vm;
504  mp->vnet_main = vnet_get_main ();
505 
506  /* Get packets RX'd from L2 interfaces */
508 
509  /* Create the config vector */
510  vec_validate (mp->configs, 100);
511  /* create 100 sw interface entries and zero them */
512 
513  /* Initialize the feature next-node indexes */
515  l2input_node.index,
519 
520  return 0;
521 }
522 
524 
525 
526 /** Get a pointer to the config for the given interface. */
529 {
531 
532  vec_validate (mp->configs, sw_if_index);
533  return vec_elt_at_index (mp->configs, sw_if_index);
534 }
535 
536 /** Enable (or disable) the feature in the bitmap for the given interface. */
537 u32
539  l2input_feat_masks_t feature_bitmap, u32 enable)
540 {
541  l2_input_config_t *config = l2input_intf_config (sw_if_index);
542 
543  if (enable)
544  config->feature_bitmap |= feature_bitmap;
545  else
546  config->feature_bitmap &= ~feature_bitmap;
547 
548  return config->feature_bitmap;
549 }
550 
551 u32
552 l2input_set_bridge_features (u32 bd_index, u32 feat_mask, u32 feat_value)
553 {
554  l2_bridge_domain_t *bd_config = l2input_bd_config (bd_index);;
555  bd_validate (bd_config);
556  bd_config->feature_bitmap =
557  (bd_config->feature_bitmap & ~feat_mask) | feat_value;
558  return bd_config->feature_bitmap;
559 }
560 
561 void
563  const u8 * old_address, const u8 * new_address)
564 {
565  /* check if the sw_if_index passed is a BVI in a BD */
566  l2_input_config_t *intf_config;
567 
568  intf_config = l2input_intf_config (sw_if_index);
569 
570  if (intf_config->bridge && intf_config->bvi)
571  {
572  /* delete and re-add l2fib entry for the bvi interface */
573  l2fib_del_entry (old_address, intf_config->bd_index, sw_if_index);
574  l2fib_add_entry (new_address,
575  intf_config->bd_index,
576  sw_if_index,
577  L2FIB_ENTRY_RESULT_FLAG_BVI |
578  L2FIB_ENTRY_RESULT_FLAG_STATIC);
579  }
580 }
581 
582 /**
583  * Set the subinterface to run in l2 or l3 mode.
584  * For L3 mode, just the sw_if_index is specified.
585  * For bridged mode, the bd id and bvi flag are also specified.
586  * For xconnect mode, the peer sw_if_index is also specified.
587  * Return 0 if ok, or non-0 if there was an error.
588  */
589 
590 u32
592  u32 mode, /* One of L2 modes or back to L3 mode */
593  u32 sw_if_index, /* sw interface index */
594  u32 bd_index, /* for bridged interface */
595  l2_bd_port_type_t port_type, /* port_type */
596  u32 shg, /* the bridged interface split horizon group */
597  u32 xc_sw_if_index) /* peer interface for xconnect */
598 {
601  vnet_main_t *vnm = vnet_get_main ();
603  l2_output_config_t *out_config;
604  l2_input_config_t *config;
605  l2_bridge_domain_t *bd_config;
606  i32 l2_if_adjust = 0;
607  vnet_device_class_t *dev_class;
608 
609  hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
610  config = l2input_intf_config (sw_if_index);
611 
612  if (config->bridge)
613  {
614  /* Interface is already in bridge mode. Undo the existing config. */
615  bd_config = vec_elt_at_index (mp->bd_configs, config->bd_index);
616 
617  /* remove interface from flood vector */
618  bd_remove_member (bd_config, sw_if_index);
619 
620  /* undo any BVI-related config */
621  if (bd_config->bvi_sw_if_index == sw_if_index)
622  {
624 
625  bd_config->bvi_sw_if_index = ~0;
626  config->bvi = 0;
627 
628  /* delete the l2fib entry for the bvi interface */
629  l2fib_del_entry (hi->hw_address, config->bd_index, sw_if_index);
630 
631  /* since this is a no longer BVI interface do not to flood to it */
632  si = vnet_get_sw_interface (vnm, sw_if_index);
634  }
635  if (bd_config->uu_fwd_sw_if_index == sw_if_index)
636  {
637  bd_config->uu_fwd_sw_if_index = ~0;
638  bd_config->feature_bitmap &= ~L2INPUT_FEAT_UU_FWD;
639  }
640 
641  /* Clear MACs learned on the interface */
642  if ((config->feature_bitmap & L2INPUT_FEAT_LEARN) ||
643  (bd_config->feature_bitmap & L2INPUT_FEAT_LEARN))
644  l2fib_flush_int_mac (vm, sw_if_index);
645 
646  l2_if_adjust--;
647  }
648  else if (config->xconnect)
649  {
650  l2_if_adjust--;
651  }
652 
653  /* Make sure vector is big enough */
656 
657  /* Initialize the l2-input configuration for the interface */
658  if (mode == MODE_L3)
659  {
660  /* Set L2 config to BD index 0 so that if any packet accidentally
661  * came in on L2 path, it will be dropped in BD 0 */
662  config->xconnect = 0;
663  config->bridge = 0;
664  config->shg = 0;
665  config->bd_index = 0;
666  config->feature_bitmap = L2INPUT_FEAT_DROP;
667 
668  /* Clear L2 output config */
669  out_config = l2output_intf_config (sw_if_index);
670  clib_memset (out_config, 0, sizeof (l2_output_config_t));
671 
672  /* Make sure any L2-output packet to this interface now in L3 mode is
673  * dropped. This may happen if L2 FIB MAC entry is stale */
675  }
676  else
677  {
678  /* Add or update l2-output node next-arc and output_node_index_vec table
679  * for the interface */
680  l2output_create_output_node_mapping (vm, vnet_main, sw_if_index);
681 
682  if (mode == MODE_L2_BRIDGE)
683  {
684  u8 member_flags;
685 
686  /*
687  * Remove a check that the interface must be an Ethernet.
688  * Specifically so we can bridge to L3 tunnel interfaces.
689  * Here's the check:
690  * if (hi->hw_class_index != ethernet_hw_interface_class.index)
691  *
692  */
693  if (!hi)
694  return MODE_ERROR_ETH; /* non-ethernet */
695 
696  config->xconnect = 0;
697  config->bridge = 1;
698  config->bd_index = bd_index;
699  *l2fib_valid_swif_seq_num (sw_if_index) += 1;
700 
701  /*
702  * Enable forwarding, flooding, learning and ARP termination by default
703  * (note that ARP term is disabled on BD feature bitmap by default)
704  */
705  config->feature_bitmap |= (L2INPUT_FEAT_FWD |
706  L2INPUT_FEAT_UU_FLOOD |
707  L2INPUT_FEAT_UU_FWD |
708  L2INPUT_FEAT_FLOOD |
709  L2INPUT_FEAT_LEARN |
710  L2INPUT_FEAT_ARP_UFWD |
711  L2INPUT_FEAT_ARP_TERM);
712 
713  /* Make sure last-chance drop is configured */
714  config->feature_bitmap |= L2INPUT_FEAT_DROP;
715 
716  /* Make sure xconnect is disabled */
717  config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT;
718 
719  /* Set up bridge domain */
720  bd_config = l2input_bd_config (bd_index);
721  bd_validate (bd_config);
722 
723  /* TODO: think: add l2fib entry even for non-bvi interface? */
724 
725  /* Do BVI interface initializations */
726  if (L2_BD_PORT_TYPE_BVI == port_type)
727  {
729 
730  /* ensure BD has no bvi interface (or replace that one with this??) */
731  if (bd_config->bvi_sw_if_index != ~0)
732  {
733  return MODE_ERROR_BVI_DEF; /* bd already has a bvi interface */
734  }
735  bd_config->bvi_sw_if_index = sw_if_index;
736  config->bvi = 1;
737 
738  /* create the l2fib entry for the bvi interface */
739  l2fib_add_entry (hi->hw_address, bd_index, sw_if_index,
740  L2FIB_ENTRY_RESULT_FLAG_BVI |
741  L2FIB_ENTRY_RESULT_FLAG_STATIC);
742 
743  /* Disable learning by default. no use since l2fib entry is static. */
744  config->feature_bitmap &= ~L2INPUT_FEAT_LEARN;
745 
746  /* since this is a BVI interface we want to flood to it */
747  si = vnet_get_sw_interface (vnm, sw_if_index);
749  member_flags = L2_FLOOD_MEMBER_BVI;
750  }
751  else if (L2_BD_PORT_TYPE_UU_FWD == port_type)
752  {
753  bd_config->uu_fwd_sw_if_index = sw_if_index;
754  bd_config->feature_bitmap |= L2INPUT_FEAT_UU_FWD;
755  }
756  else
757  {
758  member_flags = L2_FLOOD_MEMBER_NORMAL;
759  }
760 
761  if (L2_BD_PORT_TYPE_NORMAL == port_type ||
762  L2_BD_PORT_TYPE_BVI == port_type)
763  {
764  /* Add interface to bridge-domain flood vector */
765  l2_flood_member_t member = {
767  .flags = member_flags,
768  .shg = shg,
769  };
770  bd_add_member (bd_config, &member);
771  }
772  }
773  else if (mode == MODE_L2_XC)
774  {
775  config->xconnect = 1;
776  config->bridge = 0;
777  config->output_sw_if_index = xc_sw_if_index;
778 
779  /* Make sure last-chance drop is configured */
780  config->feature_bitmap |= L2INPUT_FEAT_DROP;
781 
782  /* Make sure bridging features are disabled */
783  config->feature_bitmap &=
784  ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
785 
786  config->feature_bitmap |= L2INPUT_FEAT_XCONNECT;
787  shg = 0; /* not used in xconnect */
788  }
789  else if (mode == MODE_L2_CLASSIFY)
790  {
791  config->xconnect = 1;
792  config->bridge = 0;
793  config->output_sw_if_index = xc_sw_if_index;
794 
795  /* Make sure last-chance drop is configured */
796  config->feature_bitmap |=
797  L2INPUT_FEAT_DROP | L2INPUT_FEAT_INPUT_CLASSIFY;
798 
799  /* Make sure bridging features are disabled */
800  config->feature_bitmap &=
801  ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
802  shg = 0; /* not used in xconnect */
803 
804  /* Insure all packets go to ethernet-input */
805  ethernet_set_rx_redirect (vnet_main, hi, 1);
806  }
807 
808  /* set up split-horizon group and set output feature bit */
809  config->shg = shg;
810  out_config = l2output_intf_config (sw_if_index);
811  out_config->shg = shg;
812  out_config->feature_bitmap |= L2OUTPUT_FEAT_OUTPUT;
813 
814  /*
815  * Test: remove this when non-IP features can be configured.
816  * Enable a non-IP feature to test IP feature masking
817  * config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT;
818  */
819 
820  l2_if_adjust++;
821  }
822 
823  /* Adjust count of L2 interfaces */
824  hi->l2_if_count += l2_if_adjust;
825 
827  {
828  if ((hi->l2_if_count == 1) && (l2_if_adjust == 1))
829  {
830  /* Just added first L2 interface on this port */
831 
832  /* Set promiscuous mode on the l2 interface */
833  ethernet_set_flags (vnet_main, hi->hw_if_index,
835 
836  /* ensure all packets go to ethernet-input */
837  ethernet_set_rx_redirect (vnet_main, hi, 1);
838 
839  }
840  else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1))
841  {
842  /* Just removed only L2 subinterface on this port */
843 
844  /* Disable promiscuous mode on the l2 interface */
845  ethernet_set_flags (vnet_main, hi->hw_if_index, 0);
846 
847  /* Allow ip packets to go directly to ip4-input etc */
848  ethernet_set_rx_redirect (vnet_main, hi, 0);
849  }
850  }
851 
852  /* Set up the L2/L3 flag in the interface parsing tables */
853  ethernet_sw_interface_set_l2_mode (vnm, sw_if_index, (mode != MODE_L3));
854 
855  dev_class = vnet_get_device_class (vnet_main, hi->dev_class_index);
856  if (dev_class->set_l2_mode_function)
857  {
858  dev_class->set_l2_mode_function (vnet_main, hi, l2_if_adjust);
859  }
860 
861  return 0;
862 }
863 #endif /* CLIB_MARCH_VARIANT */
864 
865 /**
866  * Set subinterface in bridging mode with a bridge-domain ID.
867  * The CLI format is:
868  * set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group]
869  */
870 static clib_error_t *
872  unformat_input_t * input, vlib_cli_command_t * cmd)
873 {
874  vnet_main_t *vnm = vnet_get_main ();
875  l2_bd_port_type_t port_type;
876  clib_error_t *error = 0;
877  u32 bd_index, bd_id;
879  u32 rc;
880  u32 shg;
881 
882  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
883  {
884  error = clib_error_return (0, "unknown interface `%U'",
885  format_unformat_error, input);
886  goto done;
887  }
888 
889  if (!unformat (input, "%d", &bd_id))
890  {
891  error = clib_error_return (0, "expected bridge domain ID `%U'",
892  format_unformat_error, input);
893  goto done;
894  }
895 
896  if (bd_id > L2_BD_ID_MAX)
897  {
898  error = clib_error_return (0, "bridge domain ID exceed 16M limit",
899  format_unformat_error, input);
900  goto done;
901  }
902  bd_index = bd_find_or_add_bd_index (&bd_main, bd_id);
903 
904  /* optional bvi */
905  port_type = L2_BD_PORT_TYPE_NORMAL;
906  if (unformat (input, "bvi"))
907  port_type = L2_BD_PORT_TYPE_BVI;
908  if (unformat (input, "uu-fwd"))
909  port_type = L2_BD_PORT_TYPE_UU_FWD;
910 
911  /* optional split horizon group */
912  shg = 0;
913  (void) unformat (input, "%d", &shg);
914 
915  /* set the interface mode */
916  if ((rc =
917  set_int_l2_mode (vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index,
918  port_type, shg, 0)))
919  {
920  if (rc == MODE_ERROR_ETH)
921  {
922  error = clib_error_return (0, "bridged interface must be ethernet",
923  format_unformat_error, input);
924  }
925  else if (rc == MODE_ERROR_BVI_DEF)
926  {
927  error =
928  clib_error_return (0, "bridge-domain already has a bvi interface",
929  format_unformat_error, input);
930  }
931  else
932  {
933  error = clib_error_return (0, "invalid configuration for interface",
934  format_unformat_error, input);
935  }
936  goto done;
937  }
938 
939 done:
940  return error;
941 }
942 
943 /*?
944  * Use this command put an interface into Layer 2 bridge domain. If a
945  * bridge-domain with the provided bridge-domain-id does not exist, it
946  * will be created. Interfaces in a bridge-domain forward packets to
947  * other interfaces in the same bridge-domain based on destination mac
948  * address. To remove an interface from a the Layer 2 bridge domain,
949  * put the interface in a different mode, for example Layer 3 mode.
950  *
951  * Optionally, an interface can be added to a Layer 2 bridge-domain as
952  * a Bridged Virtual Interface (bvi). Only one interface in a Layer 2
953  * bridge-domain can be a bvi.
954  *
955  * Optionally, a split-horizon group can also be specified. This defaults
956  * to 0 if not specified.
957  *
958  * @cliexpar
959  * Example of how to configure a Layer 2 bridge-domain with three
960  * interfaces (where 200 is the bridge-domain-id):
961  * @cliexcmd{set interface l2 bridge GigabitEthernet0/8/0.200 200}
962  * This interface is added a BVI interface:
963  * @cliexcmd{set interface l2 bridge GigabitEthernet0/9/0.200 200 bvi}
964  * This interface also has a split-horizon group of 1 specified:
965  * @cliexcmd{set interface l2 bridge GigabitEthernet0/a/0.200 200 1}
966  * Example of how to remove an interface from a Layer2 bridge-domain:
967  * @cliexcmd{set interface l3 GigabitEthernet0/a/0.200}
968 ?*/
969 /* *INDENT-OFF* */
970 VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = {
971  .path = "set interface l2 bridge",
972  .short_help = "set interface l2 bridge <interface> <bridge-domain-id> [bvi|uu-fwd] [shg]",
973  .function = int_l2_bridge,
974 };
975 /* *INDENT-ON* */
976 
977 /**
978  * Set subinterface in xconnect mode with another interface.
979  * The CLI format is:
980  * set interface l2 xconnect <interface> <peer interface>
981  */
982 static clib_error_t *
984  unformat_input_t * input, vlib_cli_command_t * cmd)
985 {
986  vnet_main_t *vnm = vnet_get_main ();
987  clib_error_t *error = 0;
989  u32 xc_sw_if_index;
990 
991  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
992  {
993  error = clib_error_return (0, "unknown interface `%U'",
994  format_unformat_error, input);
995  goto done;
996  }
997 
998  if (!unformat_user
999  (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index))
1000  {
1001  error = clib_error_return (0, "unknown peer interface `%U'",
1002  format_unformat_error, input);
1003  goto done;
1004  }
1005 
1006  /* set the interface mode */
1007  if (set_int_l2_mode
1008  (vm, vnm, MODE_L2_XC, sw_if_index, 0, L2_BD_PORT_TYPE_NORMAL,
1009  0, xc_sw_if_index))
1010  {
1011  error = clib_error_return (0, "invalid configuration for interface",
1012  format_unformat_error, input);
1013  goto done;
1014  }
1015 
1016 done:
1017  return error;
1018 }
1019 
1020 /*?
1021  * Use this command put an interface into Layer 2 cross-connect mode.
1022  * Both interfaces must be in this mode for bi-directional traffic. All
1023  * packets received on one interface will be transmitted to the other.
1024  * To remove the Layer 2 cross-connect, put the interface in a different
1025  * mode, for example Layer 3 mode.
1026  *
1027  * @cliexpar
1028  * Example of how to configure a Layer2 cross-connect between two interfaces:
1029  * @cliexcmd{set interface l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300}
1030  * @cliexcmd{set interface l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300}
1031  * Example of how to remove a Layer2 cross-connect:
1032  * @cliexcmd{set interface l3 GigabitEthernet0/8/0.300}
1033  * @cliexcmd{set interface l3 GigabitEthernet0/9/0.300}
1034 ?*/
1035 /* *INDENT-OFF* */
1036 VLIB_CLI_COMMAND (int_l2_xc_cli, static) = {
1037  .path = "set interface l2 xconnect",
1038  .short_help = "set interface l2 xconnect <interface> <peer interface>",
1039  .function = int_l2_xc,
1040 };
1041 /* *INDENT-ON* */
1042 
1043 /**
1044  * Set subinterface in L3 mode.
1045  * The CLI format is:
1046  * set interface l3 <interface>
1047  */
1048 static clib_error_t *
1050 {
1051  vnet_main_t *vnm = vnet_get_main ();
1052  clib_error_t *error = 0;
1053  u32 sw_if_index;
1054 
1055  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
1056  {
1057  error = clib_error_return (0, "unknown interface `%U'",
1058  format_unformat_error, input);
1059  goto done;
1060  }
1061 
1062  /* set the interface mode */
1063  if (set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0,
1064  L2_BD_PORT_TYPE_NORMAL, 0, 0))
1065  {
1066  error = clib_error_return (0, "invalid configuration for interface",
1067  format_unformat_error, input);
1068  goto done;
1069  }
1070 
1071 done:
1072  return error;
1073 }
1074 
1075 /*?
1076  * Modify the packet processing mode of the interface to Layer 3, which
1077  * implies packets will be routed. This is the default mode of an interface.
1078  * Use this command to remove an interface from a Layer 2 cross-connect or a
1079  * Layer 2 bridge.
1080  *
1081  * @cliexpar
1082  * Example of how to set the mode of an interface to Layer 3:
1083  * @cliexcmd{set interface l3 GigabitEthernet0/8/0.200}
1084 ?*/
1085 /* *INDENT-OFF* */
1086  VLIB_CLI_COMMAND (int_l3_cli, static) = {
1087  .path = "set interface l3",
1088  .short_help = "set interface l3 <interface>",
1089  .function = int_l3,
1090 };
1091 /* *INDENT-ON* */
1092 
1093 /**
1094  * Show interface mode.
1095  * The CLI format is:
1096  * show mode [<if-name1> <if-name2> ...]
1097  */
1098 static clib_error_t *
1100  unformat_input_t * input, vlib_cli_command_t * cmd)
1101 {
1102  vnet_main_t *vnm = vnet_get_main ();
1103  clib_error_t *error = 0;
1104  char *mode;
1105  u8 *args;
1107 
1108  vnet_sw_interface_t *si, *sis = 0;
1109  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1110  {
1111  u32 sw_if_index;
1112 
1113  /* See if user wants to show specific interface */
1114  if (unformat
1115  (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
1116  {
1117  si = pool_elt_at_index (im->sw_interfaces, sw_if_index);
1118  vec_add1 (sis, si[0]);
1119  }
1120  else
1121  {
1122  error = clib_error_return (0, "unknown input `%U'",
1123  format_unformat_error, input);
1124  goto done;
1125  }
1126  }
1127 
1128  if (vec_len (sis) == 0) /* Get all interfaces */
1129  {
1130  /* Gather interfaces. */
1132  _vec_len (sis) = 0;
1133  /* *INDENT-OFF* */
1134  pool_foreach (si, im->sw_interfaces, ({ vec_add1 (sis, si[0]); }));
1135  /* *INDENT-ON* */
1136  }
1137 
1138  vec_foreach (si, sis)
1139  {
1141  if (config->bridge)
1142  {
1143  u32 bd_id;
1144  mode = "l2 bridge";
1145  bd_id = l2input_main.bd_configs[config->bd_index].bd_id;
1146 
1147  args = format (0, "bd_id %d%s%d", bd_id,
1148  config->bvi ? " bvi shg " : " shg ", config->shg);
1149  }
1150  else if (config->xconnect)
1151  {
1152  mode = "l2 xconnect";
1153  args = format (0, "%U",
1155  vnm, config->output_sw_if_index);
1156  }
1157  else
1158  {
1159  mode = "l3";
1160  args = format (0, " ");
1161  }
1162  vlib_cli_output (vm, "%s %U %v\n",
1163  mode,
1165  vnm, si->sw_if_index, args);
1166  vec_free (args);
1167  }
1168 
1169 done:
1170  vec_free (sis);
1171 
1172  return error;
1173 }
1174 
1175 /*?
1176  * Show the packet processing mode (Layer2 cross-connect, Layer 2 bridge,
1177  * Layer 3 routed) of all interfaces and sub-interfaces, or limit the
1178  * output to just the provided list of interfaces and sub-interfaces.
1179  * The output shows the mode, the interface, and if the interface is
1180  * a member of a bridge, the bridge-domain-id and the split horizon group (shg).
1181  *
1182  * @cliexpar
1183  * Example of displaying the mode of all interfaces:
1184  * @cliexstart{show mode}
1185  * l3 local0
1186  * l3 GigabitEthernet0/8/0
1187  * l3 GigabitEthernet0/9/0
1188  * l3 GigabitEthernet0/a/0
1189  * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
1190  * l2 bridge GigabitEthernet0/9/0.200 bd_id 200 shg 0
1191  * l2 bridge GigabitEthernet0/a/0.200 bd_id 200 shg 0
1192  * l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300
1193  * l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300
1194  * @cliexend
1195  * Example of displaying the mode of a selected list of interfaces:
1196  * @cliexstart{show mode GigabitEthernet0/8/0 GigabitEthernet0/8/0.200}
1197  * l3 GigabitEthernet0/8/0
1198  * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
1199  * @cliexend
1200 ?*/
1201 /* *INDENT-OFF* */
1202 VLIB_CLI_COMMAND (show_l2_mode, static) = {
1203  .path = "show mode",
1204  .short_help = "show mode [<if-name1> <if-name2> ...]",
1205  .function = show_int_mode,
1206 };
1207 /* *INDENT-ON* */
1208 
1209 #define foreach_l2_init_function \
1210 _(feat_bitmap_drop_init) \
1211 _(l2fib_init) \
1212 _(l2_input_classify_init) \
1213 _(l2bd_init) \
1214 _(l2fwd_init) \
1215 _(l2_in_out_acl_init) \
1216 _(l2input_init) \
1217 _(l2_vtr_init) \
1218 _(l2_invtr_init) \
1219 _(l2_efp_filter_init) \
1220 _(l2learn_init) \
1221 _(l2flood_init) \
1222 _(l2output_init) \
1223 _(l2_patch_init) \
1224 _(l2_xcrw_init)
1225 
1226 #ifndef CLIB_MARCH_VARIANT
1227 clib_error_t *
1229 {
1230  clib_error_t *error;
1231 
1232 #define _(a) do { \
1233  if ((error = vlib_call_init_function (vm, a))) return error; } \
1234 while (0);
1236 #undef _
1237  return 0;
1238 }
1239 
1241 #endif /* CLIB_MARCH_VARIANT */
1242 
1243 /*
1244  * fd.io coding-style-patch-verification: ON
1245  *
1246  * Local Variables:
1247  * eval: (c-set-style "gnu")
1248  * End:
1249  */
void bd_validate(l2_bridge_domain_t *bd_config)
Init bridge domain if not done already.
Definition: l2_bd.c:51
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:440
u8 * format_l2_input_features(u8 *s, va_list *args)
Definition: l2_input.c:68
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
static char * l2input_feat_names[]
Definition: l2_input.c:55
static clib_error_t * int_l3(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Set subinterface in L3 mode.
Definition: l2_input.c:1049
l2_input_config_t * configs
Definition: l2_input.h:62
#define L2_FLOOD_MEMBER_NORMAL
Definition: l2_bd.h:50
u32 uu_fwd_sw_if_index
Definition: l2_bd.h:80
#define CLIB_UNUSED(x)
Definition: clib.h:82
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
u32 bvi_sw_if_index
Definition: l2_bd.h:74
vnet_interface_main_t interface_main
Definition: vnet.h:56
u32 l2input_set_bridge_features(u32 bd_index, u32 feat_mask, u32 feat_value)
Definition: l2_input.c:552
static_always_inline uword l2input_node_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int do_trace)
Definition: l2_input.c:294
l2_input_config_t * l2input_intf_config(u32 sw_if_index)
Get a pointer to the config for the given interface.
Definition: l2_input.c:528
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
u8 src_address[6]
Definition: packet.h:56
u8 data[0]
Packet data.
Definition: buffer.h:181
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:523
vlib_node_registration_t l2input_node
(constructor) VLIB_REGISTER_NODE (l2input_node)
Definition: l2_input.c:476
#define vlib_validate_buffer_enqueue_x4(vm, node, next_index, to_next, n_left_to_next, bi0, bi1, bi2, bi3, next0, next1, next2, next3)
Finish enqueueing four buffers forward in the graph.
Definition: buffer_node.h:138
vl_api_address_t src
Definition: gre.api:60
int i
static_always_inline u8 * l2fib_swif_seq_num(u32 sw_if_index)
Definition: l2_fib.h:452
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:989
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
unformat_function_t unformat_vnet_sw_interface
#define VLIB_NODE_FN(node)
Definition: node.h:202
u32 bd_remove_member(l2_bridge_domain_t *bd_config, u32 sw_if_index)
Definition: l2_bd.c:193
#define L2_FLOOD_MEMBER_BVI
Definition: l2_bd.h:51
u32 * output_node_index_vec
Definition: l2_output.h:58
struct _vnet_device_class vnet_device_class_t
static clib_error_t * int_l2_bridge(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Set subinterface in bridging mode with a bridge-domain ID.
Definition: l2_input.c:871
format_function_t format_vnet_sw_if_index_name
unsigned char u8
Definition: types.h:56
l2input_error_t
Definition: l2_input.c:135
vl_api_ip_proto_t protocol
Definition: lb_types.api:71
void l2output_create_output_node_mapping(vlib_main_t *vlib_main, vnet_main_t *vnet_main, u32 sw_if_index)
Create a mapping in the next node mapping table for the given sw_if_index.
Definition: l2_output.c:602
vnet_flood_class_t flood_class
Definition: interface.h:745
#define static_always_inline
Definition: clib.h:99
u8 * format_ethernet_address(u8 *s, va_list *args)
Definition: format.c:44
#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
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:173
static uword ethernet_address_cast(u8 *a)
Definition: packet.h:67
u32 output_sw_if_index
Definition: l2_input.h:36
static vnet_device_class_t * vnet_get_device_class(vnet_main_t *vnm, u32 dev_class_index)
#define MODE_L2_BRIDGE
Definition: l2_input.h:221
#define vec_new(T, N)
Create new vector of given type and length (unspecified alignment, no header).
Definition: vec.h:312
u8 dst_address[6]
Definition: packet.h:55
void bd_add_member(l2_bridge_domain_t *bd_config, l2_flood_member_t *member)
Definition: l2_bd.c:148
u8 shg
Definition: l2.api:292
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:203
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
#define clib_error_return(e, args...)
Definition: error.h:99
void l2fib_add_entry(const u8 *mac, u32 bd_index, u32 sw_if_index, l2fib_entry_result_flags_t flags)
Add an entry to the l2fib.
Definition: l2_fib.c:405
unsigned int u32
Definition: types.h:88
vl_api_gre_tunnel_mode_t mode
Definition: gre.api:55
void ethernet_set_rx_redirect(vnet_main_t *vnm, vnet_hw_interface_t *hi, u32 enable)
Definition: node.c:2153
vl_api_fib_path_type_t type
Definition: fib_types.api:123
#define foreach_l2input_error
Definition: l2_input.c:131
l2_output_config_t * l2output_intf_config(u32 sw_if_index)
Get a pointer to the config for the given interface.
Definition: l2_output.c:616
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:519
static_always_inline u8 * l2fib_valid_swif_seq_num(u32 sw_if_index)
Definition: l2_fib.h:459
vnet_main_t * vnet_main
Definition: l2_input.h:69
u32 bd_id
Definition: gbp.api:175
struct _unformat_input_t unformat_input_t
unsigned short u16
Definition: types.h:57
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:229
enum l2_bd_port_type_t_ l2_bd_port_type_t
#define PREDICT_FALSE(x)
Definition: clib.h:111
vnet_main_t vnet_main
Definition: misc.c:43
l2output_main_t l2output_main
Definition: l2_output.c:78
u32 feat_next_node_index[32]
Definition: l2_input.h:59
static u32 feat_bitmap_get_next_node_index(u32 *next_nodes, u32 bitmap)
Return the graph node index for the feature corresponding to the first set bit in the bitmap...
Definition: feat_bitmap.h:79
#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
vl_api_address_t dst
Definition: gre.api:61
l2input_feat_masks_t
Definition: l2_input.h:141
#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
static clib_error_t * int_l2_xc(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Set subinterface in xconnect mode with another interface.
Definition: l2_input.c:983
vlib_main_t * vm
Definition: in2out_ed.c:1810
#define L2INPUT_BVI
Definition: l2_input.h:97
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1150
vnet_hw_interface_class_t ethernet_hw_interface_class
u8 * format_ethernet_header_with_length(u8 *s, va_list *args)
Definition: format.c:97
#define foreach_l2_init_function
Definition: l2_input.c:1209
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169
#define UNFORMAT_END_OF_INPUT
Definition: format.h:145
u32 l2fib_del_entry(const u8 *mac, u32 bd_index, u32 sw_if_index)
Delete an entry from the l2fib.
Definition: l2_fib.c:689
u16 n_vectors
Definition: node.h:397
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:80
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:342
static void feat_bitmap_init_next_nodes(vlib_main_t *vm, u32 node_index, u32 num_features, char **feat_names, u32 *next_nodes)
Initialize the feature next-node indexes of a graph node.
Definition: feat_bitmap.h:43
#define MODE_ERROR_ETH
Definition: l2_input.h:225
void ethernet_register_l2_input(vlib_main_t *vm, u32 node_index)
Definition: node.c:2303
#define ETHERNET_INTERFACE_FLAG_ACCEPT_ALL
Definition: ethernet.h:141
#define ARRAY_LEN(x)
Definition: clib.h:62
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
static_always_inline l2_bridge_domain_t * l2input_bd_config(u32 bd_index)
Definition: l2_input.h:86
char ** l2input_get_feat_names(void)
Return an array of strings containing graph node names of each feature.
Definition: l2_input.c:62
vlib_main_t vlib_node_runtime_t * node
Definition: in2out_ed.c:1810
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:368
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:152
signed int i32
Definition: types.h:77
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:515
#define L2_BD_ID_MAX
Definition: l2_bd.h:116
static u32 bd_find_or_add_bd_index(bd_main_t *bdm, u32 bd_id)
Get or create a bridge domain.
Definition: l2_bd.h:196
#define foreach_l2input_feat
Definition: l2_input.h:102
static clib_error_t * show_int_mode(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Show interface mode.
Definition: l2_input.c:1099
u32 set_int_l2_mode(vlib_main_t *vm, vnet_main_t *vnet_main, u32 mode, u32 sw_if_index, u32 bd_index, l2_bd_port_type_t port_type, u32 shg, u32 xc_sw_if_index)
Set the subinterface to run in l2 or l3 mode.
Definition: l2_input.c:591
u32 l2input_intf_bitmap_enable(u32 sw_if_index, l2input_feat_masks_t feature_bitmap, u32 enable)
Enable (or disable) the feature in the bitmap for the given interface.
Definition: l2_input.c:538
static_always_inline void classify_and_dispatch(l2input_main_t *msm, vlib_buffer_t *b0, u32 *next0)
Definition: l2_input.c:159
#define MODE_L2_XC
Definition: l2_input.h:222
clib_error_t * l2_init(vlib_main_t *vm)
Definition: l2_input.c:1228
vl_api_ip4_address_t hi
Definition: arp.api:37
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
static u8 * format_l2input_trace(u8 *s, va_list *args)
Definition: l2_input.c:112
clib_error_t * l2input_init(vlib_main_t *vm)
Definition: l2_input.c:499
Definition: defs.h:47
l2input_main_t l2input_main
Definition: l2_input.c:128
void ethernet_sw_interface_set_l2_mode(vnet_main_t *vnm, u32 sw_if_index, u32 l2)
Definition: node.c:1964
u32 feature_bitmap
Definition: l2_bd.h:69
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
static char * l2input_error_strings[]
Definition: l2_input.c:143
void l2input_interface_mac_change(u32 sw_if_index, const u8 *old_address, const u8 *new_address)
Definition: l2_input.c:562
VLIB buffer representation.
Definition: buffer.h:102
u64 uword
Definition: types.h:112
vnet_sw_interface_t * sw_interfaces
Definition: interface.h:854
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:244
l2_bridge_domain_t * bd_configs
Definition: l2_input.h:65
#define vnet_buffer(b)
Definition: buffer.h:408
#define MODE_ERROR_BVI_DEF
Definition: l2_input.h:226
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
#define MODE_L2_CLASSIFY
Definition: l2_input.h:223
#define vec_foreach(var, vec)
Vector iterator.
#define get_u16(addr)
vlib_main_t vlib_node_runtime_t vlib_frame_t * frame
Definition: in2out_ed.c:1811
u32 sw_if_index
Definition: l2_bd.h:55
l2input_next_t
Definition: l2_input.c:149
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:302
#define vec_validate_init_empty(V, I, INIT)
Make sure vector is long enough for given index and initialize empty space (no header, unspecified alignment)
Definition: vec.h:487
bd_main_t bd_main
Definition: l2_bd.c:44
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:689
void l2fib_flush_int_mac(vlib_main_t *vm, u32 sw_if_index)
Flush all non static MACs from an interface.
Definition: l2_fib.c:809
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
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
Definition: defs.h:46
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:171
#define MODE_L3
Definition: l2_input.h:220
vlib_main_t * vlib_main
Definition: l2_input.h:68
u32 ethernet_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:426
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128