FD.io VPP  v20.09-64-g4f7b92f0a
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 dst_and_src[12];
108 
109 /* packet trace format function */
110 static u8 *
111 format_l2input_trace (u8 * s, va_list * args)
112 {
113  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
114  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
115  l2input_trace_t *t = va_arg (*args, l2input_trace_t *);
116 
117  s = format (s, "l2-input: sw_if_index %d dst %U src %U",
118  t->sw_if_index,
121  return s;
122 }
123 
125 
126 #ifndef CLIB_MARCH_VARIANT
128 #endif /* CLIB_MARCH_VARIANT */
129 
130 #define foreach_l2input_error \
131 _(L2INPUT, "L2 input packets") \
132 _(DROP, "L2 input drops")
133 
134 typedef enum
135 {
136 #define _(sym,str) L2INPUT_ERROR_##sym,
138 #undef _
141 
142 static char *l2input_error_strings[] = {
143 #define _(sym,string) string,
145 #undef _
146 };
147 
148 typedef enum
149 { /* */
155 
156 
159 {
160  /*
161  * Load L2 input feature struct
162  * Load bridge domain struct
163  * Parse ethernet header to determine unicast/mcast/broadcast
164  * take L2 input stat
165  * classify packet as IP/UDP/TCP, control, other
166  * mask feature bitmap
167  * go to first node in bitmap
168  * Later: optimize VTM
169  *
170  * For L2XC,
171  * set tx sw-if-handle
172  */
173 
174  u32 feat_mask = ~0;
175  u32 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
177 
178  /* Get config for the input interface */
179  l2_input_config_t *config = vec_elt_at_index (msm->configs, sw_if_index0);
180 
181  /* Save split horizon group */
182  vnet_buffer (b0)->l2.shg = config->shg;
183 
184  /* determine layer2 kind for stat and mask */
186  {
187  u8 *l3h0 = (u8 *) h0 + vnet_buffer (b0)->l2.l2_len;
188 
189 #define get_u16(addr) ( *((u16 *)(addr)) )
190  u16 ethertype = clib_net_to_host_u16 (get_u16 (l3h0 - 2));
191  u8 protocol = ((ip6_header_t *) l3h0)->protocol;
192 
193  /* Disable bridge forwarding (flooding will execute instead if not xconnect) */
194  feat_mask &= ~(L2INPUT_FEAT_FWD |
195  L2INPUT_FEAT_UU_FLOOD |
196  L2INPUT_FEAT_UU_FWD | L2INPUT_FEAT_GBP_FWD);
197 
198  if (ethertype != ETHERNET_TYPE_ARP)
199  feat_mask &= ~(L2INPUT_FEAT_ARP_UFWD);
200 
201  /* Disable ARP-term for non-ARP and non-ICMP6 packet */
202  if (ethertype != ETHERNET_TYPE_ARP &&
203  (ethertype != ETHERNET_TYPE_IP6 || protocol != IP_PROTOCOL_ICMP6))
204  feat_mask &= ~(L2INPUT_FEAT_ARP_TERM);
205  /*
206  * For packet from BVI - set SHG of ARP request or ICMPv6 neighbor
207  * solicitation packet from BVI to 0 so it can also flood to VXLAN
208  * tunnels or other ports with the same SHG as that of the BVI.
209  */
210  else if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] ==
211  L2INPUT_BVI))
212  {
213  if (ethertype == ETHERNET_TYPE_ARP)
214  {
216  if (arp0->opcode ==
217  clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_request))
218  vnet_buffer (b0)->l2.shg = 0;
219  }
220  else /* must be ICMPv6 */
221  {
222  ip6_header_t *iph0 = (ip6_header_t *) l3h0;
223  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh0;
224  ndh0 = ip6_next_header (iph0);
225  if (ndh0->icmp.type == ICMP6_neighbor_solicitation)
226  vnet_buffer (b0)->l2.shg = 0;
227  }
228  }
229  }
230  else
231  {
232  /*
233  * For packet from BVI - set SHG of unicast packet from BVI to 0 so it
234  * is not dropped on output to VXLAN tunnels or other ports with the
235  * same SHG as that of the BVI.
236  */
238  L2INPUT_BVI))
239  vnet_buffer (b0)->l2.shg = 0;
240  }
241 
242 
243  if (config->bridge)
244  {
245  /* Do bridge-domain processing */
246  u16 bd_index0 = config->bd_index;
247  /* save BD ID for next feature graph nodes */
248  vnet_buffer (b0)->l2.bd_index = bd_index0;
249 
250  /* Get config for the bridge domain interface */
251  l2_bridge_domain_t *bd_config =
252  vec_elt_at_index (msm->bd_configs, bd_index0);
253 
254  /* Save bridge domain and interface seq_num */
255  /* *INDENT-OFF* */
256  l2fib_seq_num_t sn = {
257  .swif = *l2fib_swif_seq_num(sw_if_index0),
258  .bd = bd_config->seq_num,
259  };
260  /* *INDENT-ON* */
261  vnet_buffer (b0)->l2.l2fib_sn = sn.as_u16;;
262  vnet_buffer (b0)->l2.bd_age = bd_config->mac_age;
263 
264  /*
265  * Process bridge domain feature enables.
266  * To perform learning/flooding/forwarding, the corresponding bit
267  * must be enabled in both the input interface config and in the
268  * bridge domain config. In the bd_bitmap, bits for features other
269  * than learning/flooding/forwarding should always be set.
270  */
271  feat_mask = feat_mask & bd_config->feature_bitmap;
272  }
273  else if (config->xconnect)
274  {
275  /* Set the output interface */
276  vnet_buffer (b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
277  }
278  else
279  feat_mask = L2INPUT_FEAT_DROP;
280 
281  /* mask out features from bitmap using packet type and bd config */
282  u32 feature_bitmap = config->feature_bitmap & feat_mask;
283 
284  /* save for next feature graph nodes */
285  vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;
286 
287  /* Determine the next node */
289  feature_bitmap);
290 }
291 
295  int do_trace)
296 {
297  u32 n_left_from, *from, *to_next;
298  l2input_next_t next_index;
300  vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
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  vlib_get_buffers (vm, from, bufs, n_left_from);
306 
307  while (n_left_from > 0)
308  {
309  u32 n_left_to_next;
310 
311  /* get space to enqueue frame to graph node "next_index" */
312  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
313 
314  while (n_left_from >= 8 && n_left_to_next >= 4)
315  {
316  u32 next0, next1, next2, next3;
317  u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
318 
319  /* Prefetch next iteration. */
320  {
321 
322  /* Prefetch the buffer header and packet for the N+2 loop iteration */
323  vlib_prefetch_buffer_header (b[4], LOAD);
324  vlib_prefetch_buffer_header (b[5], LOAD);
325  vlib_prefetch_buffer_header (b[6], LOAD);
326  vlib_prefetch_buffer_header (b[7], LOAD);
327 
328  CLIB_PREFETCH (b[4]->data, CLIB_CACHE_LINE_BYTES, STORE);
329  CLIB_PREFETCH (b[5]->data, CLIB_CACHE_LINE_BYTES, STORE);
330  CLIB_PREFETCH (b[6]->data, CLIB_CACHE_LINE_BYTES, STORE);
331  CLIB_PREFETCH (b[7]->data, CLIB_CACHE_LINE_BYTES, STORE);
332 
333  /*
334  * Don't bother prefetching the bridge-domain config (which
335  * depends on the input config above). Only a small number of
336  * bridge domains are expected. Plus the structure is small
337  * and several fit in a cache line.
338  */
339  }
340 
341  /* speculatively enqueue b0 and b1 to the current next frame */
342  /* bi is "buffer index", b is pointer to the buffer */
343 
344  if (do_trace)
345  {
346  /* RX interface handles */
347  sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
348  sw_if_index1 = vnet_buffer (b[1])->sw_if_index[VLIB_RX];
349  sw_if_index2 = vnet_buffer (b[2])->sw_if_index[VLIB_RX];
350  sw_if_index3 = vnet_buffer (b[3])->sw_if_index[VLIB_RX];
351 
352  if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
353  {
355  l2input_trace_t *t =
356  vlib_add_trace (vm, node, b[0], sizeof (*t));
357  t->sw_if_index = sw_if_index0;
359  sizeof (h0->dst_address) +
360  sizeof (h0->src_address));
361  }
362  if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
363  {
365  l2input_trace_t *t =
366  vlib_add_trace (vm, node, b[1], sizeof (*t));
367  t->sw_if_index = sw_if_index1;
369  sizeof (h1->dst_address) +
370  sizeof (h1->src_address));
371  }
372  if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
373  {
375  l2input_trace_t *t =
376  vlib_add_trace (vm, node, b[2], sizeof (*t));
377  t->sw_if_index = sw_if_index2;
379  sizeof (h2->dst_address) +
380  sizeof (h2->src_address));
381  }
382  if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
383  {
385  l2input_trace_t *t =
386  vlib_add_trace (vm, node, b[3], sizeof (*t));
387  t->sw_if_index = sw_if_index3;
389  sizeof (h3->dst_address) +
390  sizeof (h3->src_address));
391  }
392  }
393 
394  classify_and_dispatch (msm, b[0], &next0);
395  classify_and_dispatch (msm, b[1], &next1);
396  //show the better performance when clib_memcpy_fast is put here.
397  clib_memcpy_fast (to_next, from, sizeof (from[0]) * 4);
398  to_next += 4;
399  classify_and_dispatch (msm, b[2], &next2);
400  classify_and_dispatch (msm, b[3], &next3);
401  b += 4;
402  n_left_from -= 4;
403  n_left_to_next -= 4;
404 
405  /* verify speculative enqueues, maybe switch current next frame */
406  /* if next0==next1==next_index then nothing special needs to be done */
407  vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
408  to_next, n_left_to_next,
409  from[0], from[1], from[2], from[3],
410  next0, next1, next2, next3);
411  from += 4;
412  }
413 
414  while (n_left_from > 0 && n_left_to_next > 0)
415  {
416  u32 next0;
417  u32 sw_if_index0;
418 
419  /* speculatively enqueue b0 to the current next frame */
420 
421  if (do_trace && PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
422  {
424  l2input_trace_t *t =
425  vlib_add_trace (vm, node, b[0], sizeof (*t));
426  sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
427  t->sw_if_index = sw_if_index0;
429  sizeof (h0->dst_address) +
430  sizeof (h0->src_address));
431  }
432 
433  classify_and_dispatch (msm, b[0], &next0);
434  b += 1;
435  to_next[0] = from[0];
436  to_next += 1;
437  n_left_from -= 1;
438  n_left_to_next -= 1;
439 
440  /* verify speculative enqueue, maybe switch current next frame */
441  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
442  to_next, n_left_to_next,
443  from[0], next0);
444  from += 1;
445  }
446 
447  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
448  }
449 
451  L2INPUT_ERROR_L2INPUT, frame->n_vectors);
452 
453  return frame->n_vectors;
454 }
455 
458 {
459  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
460  return l2input_node_inline (vm, node, frame, 1 /* do_trace */ );
461  return l2input_node_inline (vm, node, frame, 0 /* do_trace */ );
462 }
463 
464 /* *INDENT-OFF* */
466  .name = "l2-input",
467  .vector_size = sizeof (u32),
468  .format_trace = format_l2input_trace,
469  .format_buffer = format_ethernet_header_with_length,
471 
472  .n_errors = ARRAY_LEN(l2input_error_strings),
473  .error_strings = l2input_error_strings,
474 
475  .n_next_nodes = L2INPUT_N_NEXT,
476 
477  /* edit / add dispositions here */
478  .next_nodes = {
479  [L2INPUT_NEXT_LEARN] = "l2-learn",
480  [L2INPUT_NEXT_FWD] = "l2-fwd",
481  [L2INPUT_NEXT_DROP] = "error-drop",
482  },
483 };
484 /* *INDENT-ON* */
485 
486 #ifndef CLIB_MARCH_VARIANT
487 clib_error_t *
489 {
491 
492  mp->vlib_main = vm;
493  mp->vnet_main = vnet_get_main ();
494 
495  /* Get packets RX'd from L2 interfaces */
497 
498  /* Create the config vector */
499  vec_validate (mp->configs, 100);
500  /* create 100 sw interface entries and zero them */
501 
502  /* Initialize the feature next-node indexes */
504  l2input_node.index,
508 
509  return 0;
510 }
511 
513 
514 
515 /** Get a pointer to the config for the given interface. */
518 {
520 
521  vec_validate (mp->configs, sw_if_index);
522  return vec_elt_at_index (mp->configs, sw_if_index);
523 }
524 
525 /** Enable (or disable) the feature in the bitmap for the given interface. */
526 u32
528  l2input_feat_masks_t feature_bitmap, u32 enable)
529 {
530  l2_input_config_t *config = l2input_intf_config (sw_if_index);
531 
532  if (enable)
533  config->feature_bitmap |= feature_bitmap;
534  else
535  config->feature_bitmap &= ~feature_bitmap;
536 
537  return config->feature_bitmap;
538 }
539 
540 u32
541 l2input_set_bridge_features (u32 bd_index, u32 feat_mask, u32 feat_value)
542 {
543  l2_bridge_domain_t *bd_config = l2input_bd_config (bd_index);;
544  bd_validate (bd_config);
545  bd_config->feature_bitmap =
546  (bd_config->feature_bitmap & ~feat_mask) | feat_value;
547  return bd_config->feature_bitmap;
548 }
549 
550 void
552  const u8 * old_address, const u8 * new_address)
553 {
554  /* check if the sw_if_index passed is a BVI in a BD */
555  l2_input_config_t *intf_config;
556 
557  intf_config = l2input_intf_config (sw_if_index);
558 
559  if (intf_config->bridge && intf_config->bvi)
560  {
561  /* delete and re-add l2fib entry for the bvi interface */
562  l2fib_del_entry (old_address, intf_config->bd_index, sw_if_index);
563  l2fib_add_entry (new_address,
564  intf_config->bd_index,
565  sw_if_index,
566  L2FIB_ENTRY_RESULT_FLAG_BVI |
567  L2FIB_ENTRY_RESULT_FLAG_STATIC);
568  }
569 }
570 
571 /**
572  * Set the subinterface to run in l2 or l3 mode.
573  * For L3 mode, just the sw_if_index is specified.
574  * For bridged mode, the bd id and bvi flag are also specified.
575  * For xconnect mode, the peer sw_if_index is also specified.
576  * Return 0 if ok, or non-0 if there was an error.
577  */
578 
579 u32
581  u32 mode, /* One of L2 modes or back to L3 mode */
582  u32 sw_if_index, /* sw interface index */
583  u32 bd_index, /* for bridged interface */
584  l2_bd_port_type_t port_type, /* port_type */
585  u32 shg, /* the bridged interface split horizon group */
586  u32 xc_sw_if_index) /* peer interface for xconnect */
587 {
590  vnet_main_t *vnm = vnet_get_main ();
592  l2_output_config_t *out_config;
593  l2_input_config_t *config;
594  l2_bridge_domain_t *bd_config;
595  i32 l2_if_adjust = 0;
596  vnet_device_class_t *dev_class;
597 
598  hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
599  config = l2input_intf_config (sw_if_index);
600 
601  if (config->bridge)
602  {
603  /* Interface is already in bridge mode. Undo the existing config. */
604  bd_config = vec_elt_at_index (mp->bd_configs, config->bd_index);
605 
606  /* remove interface from flood vector */
607  bd_remove_member (bd_config, sw_if_index);
608 
609  /* undo any BVI-related config */
610  if (bd_config->bvi_sw_if_index == sw_if_index)
611  {
613 
614  bd_config->bvi_sw_if_index = ~0;
615  config->bvi = 0;
616 
617  /* delete the l2fib entry for the bvi interface */
618  l2fib_del_entry (hi->hw_address, config->bd_index, sw_if_index);
619 
620  /* since this is a no longer BVI interface do not to flood to it */
621  si = vnet_get_sw_interface (vnm, sw_if_index);
623  }
624  if (bd_config->uu_fwd_sw_if_index == sw_if_index)
625  {
626  bd_config->uu_fwd_sw_if_index = ~0;
627  bd_config->feature_bitmap &= ~L2INPUT_FEAT_UU_FWD;
628  }
629 
630  /* Clear MACs learned on the interface */
631  if ((config->feature_bitmap & L2INPUT_FEAT_LEARN) ||
632  (bd_config->feature_bitmap & L2INPUT_FEAT_LEARN))
633  l2fib_flush_int_mac (vm, sw_if_index);
634 
635  l2_if_adjust--;
636  }
637  else if (config->xconnect)
638  {
639  l2_if_adjust--;
640  }
641 
642  /* Make sure vector is big enough */
645 
646  /* Initialize the l2-input configuration for the interface */
647  if (mode == MODE_L3)
648  {
649  /* Set L2 config to BD index 0 so that if any packet accidentally
650  * came in on L2 path, it will be dropped in BD 0 */
651  config->xconnect = 0;
652  config->bridge = 0;
653  config->shg = 0;
654  config->bd_index = 0;
655  config->feature_bitmap = L2INPUT_FEAT_DROP;
656 
657  /* Clear L2 output config */
658  out_config = l2output_intf_config (sw_if_index);
659  clib_memset (out_config, 0, sizeof (l2_output_config_t));
660 
661  /* Make sure any L2-output packet to this interface now in L3 mode is
662  * dropped. This may happen if L2 FIB MAC entry is stale */
664  }
665  else
666  {
667  /* Add or update l2-output node next-arc and output_node_index_vec table
668  * for the interface */
669  l2output_create_output_node_mapping (vm, vnet_main, sw_if_index);
670 
671  if (mode == MODE_L2_BRIDGE)
672  {
673  u8 member_flags;
674 
675  /*
676  * Remove a check that the interface must be an Ethernet.
677  * Specifically so we can bridge to L3 tunnel interfaces.
678  * Here's the check:
679  * if (hi->hw_class_index != ethernet_hw_interface_class.index)
680  *
681  */
682  if (!hi)
683  return MODE_ERROR_ETH; /* non-ethernet */
684 
685  config->xconnect = 0;
686  config->bridge = 1;
687  config->bd_index = bd_index;
688  *l2fib_valid_swif_seq_num (sw_if_index) += 1;
689 
690  /*
691  * Enable forwarding, flooding, learning and ARP termination by default
692  * (note that ARP term is disabled on BD feature bitmap by default)
693  */
694  config->feature_bitmap |= (L2INPUT_FEAT_FWD |
695  L2INPUT_FEAT_UU_FLOOD |
696  L2INPUT_FEAT_UU_FWD |
697  L2INPUT_FEAT_FLOOD |
698  L2INPUT_FEAT_LEARN |
699  L2INPUT_FEAT_ARP_UFWD |
700  L2INPUT_FEAT_ARP_TERM);
701 
702  /* Make sure last-chance drop is configured */
703  config->feature_bitmap |= L2INPUT_FEAT_DROP;
704 
705  /* Make sure xconnect is disabled */
706  config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT;
707 
708  /* Set up bridge domain */
709  bd_config = l2input_bd_config (bd_index);
710  bd_validate (bd_config);
711 
712  /* TODO: think: add l2fib entry even for non-bvi interface? */
713 
714  /* Do BVI interface initializations */
715  if (L2_BD_PORT_TYPE_BVI == port_type)
716  {
718 
719  /* ensure BD has no bvi interface (or replace that one with this??) */
720  if (bd_config->bvi_sw_if_index != ~0)
721  {
722  return MODE_ERROR_BVI_DEF; /* bd already has a bvi interface */
723  }
724  bd_config->bvi_sw_if_index = sw_if_index;
725  config->bvi = 1;
726 
727  /* create the l2fib entry for the bvi interface */
728  l2fib_add_entry (hi->hw_address, bd_index, sw_if_index,
729  L2FIB_ENTRY_RESULT_FLAG_BVI |
730  L2FIB_ENTRY_RESULT_FLAG_STATIC);
731 
732  /* Disable learning by default. no use since l2fib entry is static. */
733  config->feature_bitmap &= ~L2INPUT_FEAT_LEARN;
734 
735  /* since this is a BVI interface we want to flood to it */
736  si = vnet_get_sw_interface (vnm, sw_if_index);
738  member_flags = L2_FLOOD_MEMBER_BVI;
739  }
740  else if (L2_BD_PORT_TYPE_UU_FWD == port_type)
741  {
742  bd_config->uu_fwd_sw_if_index = sw_if_index;
743  bd_config->feature_bitmap |= L2INPUT_FEAT_UU_FWD;
744  }
745  else
746  {
747  member_flags = L2_FLOOD_MEMBER_NORMAL;
748  }
749 
750  if (L2_BD_PORT_TYPE_NORMAL == port_type ||
751  L2_BD_PORT_TYPE_BVI == port_type)
752  {
753  /* Add interface to bridge-domain flood vector */
754  l2_flood_member_t member = {
756  .flags = member_flags,
757  .shg = shg,
758  };
759  bd_add_member (bd_config, &member);
760  }
761  }
762  else if (mode == MODE_L2_XC)
763  {
764  config->xconnect = 1;
765  config->bridge = 0;
766  config->output_sw_if_index = xc_sw_if_index;
767 
768  /* Make sure last-chance drop is configured */
769  config->feature_bitmap |= L2INPUT_FEAT_DROP;
770 
771  /* Make sure bridging features are disabled */
772  config->feature_bitmap &=
773  ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
774 
775  config->feature_bitmap |= L2INPUT_FEAT_XCONNECT;
776  shg = 0; /* not used in xconnect */
777  }
778  else if (mode == MODE_L2_CLASSIFY)
779  {
780  config->xconnect = 1;
781  config->bridge = 0;
782  config->output_sw_if_index = xc_sw_if_index;
783 
784  /* Make sure last-chance drop is configured */
785  config->feature_bitmap |=
786  L2INPUT_FEAT_DROP | L2INPUT_FEAT_INPUT_CLASSIFY;
787 
788  /* Make sure bridging features are disabled */
789  config->feature_bitmap &=
790  ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
791  shg = 0; /* not used in xconnect */
792  }
793 
794  /* set up split-horizon group and set output feature bit */
795  config->shg = shg;
796  out_config = l2output_intf_config (sw_if_index);
797  out_config->shg = shg;
798  out_config->feature_bitmap |= L2OUTPUT_FEAT_OUTPUT;
799 
800  /*
801  * Test: remove this when non-IP features can be configured.
802  * Enable a non-IP feature to test IP feature masking
803  * config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT;
804  */
805 
806  l2_if_adjust++;
807  }
808 
809  /* Adjust count of L2 interfaces */
810  hi->l2_if_count += l2_if_adjust;
811 
813  {
814  if ((hi->l2_if_count == 1) && (l2_if_adjust == 1))
815  {
816  /* Just added first L2 interface on this port
817  * Set promiscuous mode on the l2 interface */
818  ethernet_set_flags (vnet_main, hi->hw_if_index,
820  }
821  else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1))
822  {
823  /* Just removed only L2 subinterface on this port
824  * Disable promiscuous mode on the l2 interface */
825  ethernet_set_flags (vnet_main, hi->hw_if_index,
826  /*ETHERNET_INTERFACE_FLAG_DEFAULT_L3 */ 0);
827 
828  }
829  }
830 
831  /* Set up the L2/L3 flag in the interface parsing tables */
832  ethernet_sw_interface_set_l2_mode (vnm, sw_if_index, (mode != MODE_L3));
833 
834  dev_class = vnet_get_device_class (vnet_main, hi->dev_class_index);
835  if (dev_class->set_l2_mode_function)
836  {
837  dev_class->set_l2_mode_function (vnet_main, hi, l2_if_adjust);
838  }
839 
840  return 0;
841 }
842 #endif /* CLIB_MARCH_VARIANT */
843 
844 /**
845  * Set subinterface in bridging mode with a bridge-domain ID.
846  * The CLI format is:
847  * set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group]
848  */
849 static clib_error_t *
851  unformat_input_t * input, vlib_cli_command_t * cmd)
852 {
853  vnet_main_t *vnm = vnet_get_main ();
854  l2_bd_port_type_t port_type;
855  clib_error_t *error = 0;
856  u32 bd_index, bd_id;
858  u32 rc;
859  u32 shg;
860 
861  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
862  {
863  error = clib_error_return (0, "unknown interface `%U'",
864  format_unformat_error, input);
865  goto done;
866  }
867 
868  if (!unformat (input, "%d", &bd_id))
869  {
870  error = clib_error_return (0, "expected bridge domain ID `%U'",
871  format_unformat_error, input);
872  goto done;
873  }
874 
875  if (bd_id > L2_BD_ID_MAX)
876  {
877  error = clib_error_return (0, "bridge domain ID exceed 16M limit",
878  format_unformat_error, input);
879  goto done;
880  }
881  bd_index = bd_find_or_add_bd_index (&bd_main, bd_id);
882 
883  /* optional bvi */
884  port_type = L2_BD_PORT_TYPE_NORMAL;
885  if (unformat (input, "bvi"))
886  port_type = L2_BD_PORT_TYPE_BVI;
887  if (unformat (input, "uu-fwd"))
888  port_type = L2_BD_PORT_TYPE_UU_FWD;
889 
890  /* optional split horizon group */
891  shg = 0;
892  (void) unformat (input, "%d", &shg);
893 
894  /* set the interface mode */
895  if ((rc =
896  set_int_l2_mode (vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index,
897  port_type, shg, 0)))
898  {
899  if (rc == MODE_ERROR_ETH)
900  {
901  error = clib_error_return (0, "bridged interface must be ethernet",
902  format_unformat_error, input);
903  }
904  else if (rc == MODE_ERROR_BVI_DEF)
905  {
906  error =
907  clib_error_return (0, "bridge-domain already has a bvi interface",
908  format_unformat_error, input);
909  }
910  else
911  {
912  error = clib_error_return (0, "invalid configuration for interface",
913  format_unformat_error, input);
914  }
915  goto done;
916  }
917 
918 done:
919  return error;
920 }
921 
922 /*?
923  * Use this command put an interface into Layer 2 bridge domain. If a
924  * bridge-domain with the provided bridge-domain-id does not exist, it
925  * will be created. Interfaces in a bridge-domain forward packets to
926  * other interfaces in the same bridge-domain based on destination mac
927  * address. To remove an interface from a the Layer 2 bridge domain,
928  * put the interface in a different mode, for example Layer 3 mode.
929  *
930  * Optionally, an interface can be added to a Layer 2 bridge-domain as
931  * a Bridged Virtual Interface (bvi). Only one interface in a Layer 2
932  * bridge-domain can be a bvi.
933  *
934  * Optionally, a split-horizon group can also be specified. This defaults
935  * to 0 if not specified.
936  *
937  * @cliexpar
938  * Example of how to configure a Layer 2 bridge-domain with three
939  * interfaces (where 200 is the bridge-domain-id):
940  * @cliexcmd{set interface l2 bridge GigabitEthernet0/8/0.200 200}
941  * This interface is added a BVI interface:
942  * @cliexcmd{set interface l2 bridge GigabitEthernet0/9/0.200 200 bvi}
943  * This interface also has a split-horizon group of 1 specified:
944  * @cliexcmd{set interface l2 bridge GigabitEthernet0/a/0.200 200 1}
945  * Example of how to remove an interface from a Layer2 bridge-domain:
946  * @cliexcmd{set interface l3 GigabitEthernet0/a/0.200}
947 ?*/
948 /* *INDENT-OFF* */
949 VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = {
950  .path = "set interface l2 bridge",
951  .short_help = "set interface l2 bridge <interface> <bridge-domain-id> [bvi|uu-fwd] [shg]",
952  .function = int_l2_bridge,
953 };
954 /* *INDENT-ON* */
955 
956 /**
957  * Set subinterface in xconnect mode with another interface.
958  * The CLI format is:
959  * set interface l2 xconnect <interface> <peer interface>
960  */
961 static clib_error_t *
963  unformat_input_t * input, vlib_cli_command_t * cmd)
964 {
965  vnet_main_t *vnm = vnet_get_main ();
966  clib_error_t *error = 0;
968  u32 xc_sw_if_index;
969 
970  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
971  {
972  error = clib_error_return (0, "unknown interface `%U'",
973  format_unformat_error, input);
974  goto done;
975  }
976 
977  if (!unformat_user
978  (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index))
979  {
980  error = clib_error_return (0, "unknown peer interface `%U'",
981  format_unformat_error, input);
982  goto done;
983  }
984 
985  /* set the interface mode */
986  if (set_int_l2_mode
987  (vm, vnm, MODE_L2_XC, sw_if_index, 0, L2_BD_PORT_TYPE_NORMAL,
988  0, xc_sw_if_index))
989  {
990  error = clib_error_return (0, "invalid configuration for interface",
991  format_unformat_error, input);
992  goto done;
993  }
994 
995 done:
996  return error;
997 }
998 
999 /*?
1000  * Use this command put an interface into Layer 2 cross-connect mode.
1001  * Both interfaces must be in this mode for bi-directional traffic. All
1002  * packets received on one interface will be transmitted to the other.
1003  * To remove the Layer 2 cross-connect, put the interface in a different
1004  * mode, for example Layer 3 mode.
1005  *
1006  * @cliexpar
1007  * Example of how to configure a Layer2 cross-connect between two interfaces:
1008  * @cliexcmd{set interface l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300}
1009  * @cliexcmd{set interface l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300}
1010  * Example of how to remove a Layer2 cross-connect:
1011  * @cliexcmd{set interface l3 GigabitEthernet0/8/0.300}
1012  * @cliexcmd{set interface l3 GigabitEthernet0/9/0.300}
1013 ?*/
1014 /* *INDENT-OFF* */
1015 VLIB_CLI_COMMAND (int_l2_xc_cli, static) = {
1016  .path = "set interface l2 xconnect",
1017  .short_help = "set interface l2 xconnect <interface> <peer interface>",
1018  .function = int_l2_xc,
1019 };
1020 /* *INDENT-ON* */
1021 
1022 /**
1023  * Set subinterface in L3 mode.
1024  * The CLI format is:
1025  * set interface l3 <interface>
1026  */
1027 static clib_error_t *
1029 {
1030  vnet_main_t *vnm = vnet_get_main ();
1031  clib_error_t *error = 0;
1032  u32 sw_if_index;
1033 
1034  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
1035  {
1036  error = clib_error_return (0, "unknown interface `%U'",
1037  format_unformat_error, input);
1038  goto done;
1039  }
1040 
1041  /* set the interface mode */
1042  if (set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0,
1043  L2_BD_PORT_TYPE_NORMAL, 0, 0))
1044  {
1045  error = clib_error_return (0, "invalid configuration for interface",
1046  format_unformat_error, input);
1047  goto done;
1048  }
1049 
1050 done:
1051  return error;
1052 }
1053 
1054 /*?
1055  * Modify the packet processing mode of the interface to Layer 3, which
1056  * implies packets will be routed. This is the default mode of an interface.
1057  * Use this command to remove an interface from a Layer 2 cross-connect or a
1058  * Layer 2 bridge.
1059  *
1060  * @cliexpar
1061  * Example of how to set the mode of an interface to Layer 3:
1062  * @cliexcmd{set interface l3 GigabitEthernet0/8/0.200}
1063 ?*/
1064 /* *INDENT-OFF* */
1065  VLIB_CLI_COMMAND (int_l3_cli, static) = {
1066  .path = "set interface l3",
1067  .short_help = "set interface l3 <interface>",
1068  .function = int_l3,
1069 };
1070 /* *INDENT-ON* */
1071 
1072 /**
1073  * Show interface mode.
1074  * The CLI format is:
1075  * show mode [<if-name1> <if-name2> ...]
1076  */
1077 static clib_error_t *
1079  unformat_input_t * input, vlib_cli_command_t * cmd)
1080 {
1081  vnet_main_t *vnm = vnet_get_main ();
1082  clib_error_t *error = 0;
1083  char *mode;
1084  u8 *args;
1086 
1087  vnet_sw_interface_t *si, *sis = 0;
1088  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1089  {
1090  u32 sw_if_index;
1091 
1092  /* See if user wants to show specific interface */
1093  if (unformat
1094  (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
1095  {
1096  si = pool_elt_at_index (im->sw_interfaces, sw_if_index);
1097  vec_add1 (sis, si[0]);
1098  }
1099  else
1100  {
1101  error = clib_error_return (0, "unknown input `%U'",
1102  format_unformat_error, input);
1103  goto done;
1104  }
1105  }
1106 
1107  if (vec_len (sis) == 0) /* Get all interfaces */
1108  {
1109  /* Gather interfaces. */
1111  _vec_len (sis) = 0;
1112  /* *INDENT-OFF* */
1113  pool_foreach (si, im->sw_interfaces, ({ vec_add1 (sis, si[0]); }));
1114  /* *INDENT-ON* */
1115  }
1116 
1117  vec_foreach (si, sis)
1118  {
1120  if (config->bridge)
1121  {
1122  u32 bd_id;
1123  mode = "l2 bridge";
1124  bd_id = l2input_main.bd_configs[config->bd_index].bd_id;
1125 
1126  args = format (0, "bd_id %d%s%d", bd_id,
1127  config->bvi ? " bvi shg " : " shg ", config->shg);
1128  }
1129  else if (config->xconnect)
1130  {
1131  mode = "l2 xconnect";
1132  args = format (0, "%U",
1134  vnm, config->output_sw_if_index);
1135  }
1136  else
1137  {
1138  mode = "l3";
1139  args = format (0, " ");
1140  }
1141  vlib_cli_output (vm, "%s %U %v\n",
1142  mode,
1144  vnm, si->sw_if_index, args);
1145  vec_free (args);
1146  }
1147 
1148 done:
1149  vec_free (sis);
1150 
1151  return error;
1152 }
1153 
1154 /*?
1155  * Show the packet processing mode (Layer2 cross-connect, Layer 2 bridge,
1156  * Layer 3 routed) of all interfaces and sub-interfaces, or limit the
1157  * output to just the provided list of interfaces and sub-interfaces.
1158  * The output shows the mode, the interface, and if the interface is
1159  * a member of a bridge, the bridge-domain-id and the split horizon group (shg).
1160  *
1161  * @cliexpar
1162  * Example of displaying the mode of all interfaces:
1163  * @cliexstart{show mode}
1164  * l3 local0
1165  * l3 GigabitEthernet0/8/0
1166  * l3 GigabitEthernet0/9/0
1167  * l3 GigabitEthernet0/a/0
1168  * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
1169  * l2 bridge GigabitEthernet0/9/0.200 bd_id 200 shg 0
1170  * l2 bridge GigabitEthernet0/a/0.200 bd_id 200 shg 0
1171  * l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300
1172  * l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300
1173  * @cliexend
1174  * Example of displaying the mode of a selected list of interfaces:
1175  * @cliexstart{show mode GigabitEthernet0/8/0 GigabitEthernet0/8/0.200}
1176  * l3 GigabitEthernet0/8/0
1177  * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
1178  * @cliexend
1179 ?*/
1180 /* *INDENT-OFF* */
1181 VLIB_CLI_COMMAND (show_l2_mode, static) = {
1182  .path = "show mode",
1183  .short_help = "show mode [<if-name1> <if-name2> ...]",
1184  .function = show_int_mode,
1185 };
1186 /* *INDENT-ON* */
1187 
1188 #define foreach_l2_init_function \
1189 _(feat_bitmap_drop_init) \
1190 _(l2fib_init) \
1191 _(l2_input_classify_init) \
1192 _(l2bd_init) \
1193 _(l2fwd_init) \
1194 _(l2_in_out_acl_init) \
1195 _(l2input_init) \
1196 _(l2_vtr_init) \
1197 _(l2_invtr_init) \
1198 _(l2_efp_filter_init) \
1199 _(l2learn_init) \
1200 _(l2flood_init) \
1201 _(l2output_init) \
1202 _(l2_patch_init) \
1203 _(l2_xcrw_init)
1204 
1205 #ifndef CLIB_MARCH_VARIANT
1206 clib_error_t *
1208 {
1209  clib_error_t *error;
1210 
1211 #define _(a) do { \
1212  if ((error = vlib_call_init_function (vm, a))) return error; } \
1213 while (0);
1215 #undef _
1216  return 0;
1217 }
1218 
1220 #endif /* CLIB_MARCH_VARIANT */
1221 
1222 /*
1223  * fd.io coding-style-patch-verification: ON
1224  *
1225  * Local Variables:
1226  * eval: (c-set-style "gnu")
1227  * End:
1228  */
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:509
u8 * format_l2_input_features(u8 *s, va_list *args)
Definition: l2_input.c:68
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:1028
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:87
vl_api_wireguard_peer_flags_t flags
Definition: wireguard.api:103
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:59
u32 l2input_set_bridge_features(u32 bd_index, u32 feat_mask, u32 feat_value)
Definition: l2_input.c:541
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:293
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:517
#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
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:592
vlib_node_registration_t l2input_node
(constructor) VLIB_REGISTER_NODE (l2input_node)
Definition: l2_input.c:465
#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:140
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)
vlib_main_t * vm
Definition: in2out_ed.c:1582
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:850
u8 dst_and_src[12]
Definition: l2_input.c:104
format_function_t format_vnet_sw_if_index_name
unsigned char u8
Definition: types.h:56
u8 data[128]
Definition: ipsec_types.api:89
l2input_error_t
Definition: l2_input.c:134
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:763
#define static_always_inline
Definition: clib.h:108
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:513
#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:350
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:303
#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
#define VLIB_FRAME_SIZE
Definition: node.h:377
vl_api_fib_path_type_t type
Definition: fib_types.api:123
#define foreach_l2input_error
Definition: l2_input.c:130
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:534
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:188
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:120
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:224
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:391
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:962
vl_api_tunnel_mode_t mode
Definition: gre.api:48
#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:1231
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:1188
#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:396
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:80
sll srl srl sll sra u16x4 i
Definition: vector_sse42.h:317
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:380
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:2312
#define ETHERNET_INTERFACE_FLAG_ACCEPT_ALL
Definition: ethernet.h:152
#define ARRAY_LEN(x)
Definition: clib.h:67
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:483
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
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:371
vlib_main_t vlib_node_runtime_t * node
Definition: in2out_ed.c:1582
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:158
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:510
#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
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:696
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:1078
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:580
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:527
static_always_inline void classify_and_dispatch(l2input_main_t *msm, vlib_buffer_t *b0, u32 *next0)
Definition: l2_input.c:158
#define MODE_L2_XC
Definition: l2_input.h:222
clib_error_t * l2_init(vlib_main_t *vm)
Definition: l2_input.c:1207
vl_api_ip4_address_t hi
Definition: arp.api:37
static u8 * format_l2input_trace(u8 *s, va_list *args)
Definition: l2_input.c:111
clib_error_t * l2input_init(vlib_main_t *vm)
Definition: l2_input.c:488
Definition: defs.h:47
l2input_main_t l2input_main
Definition: l2_input.c:127
void ethernet_sw_interface_set_l2_mode(vnet_main_t *vnm, u32 sw_if_index, u32 l2)
Definition: node.c:1973
u32 feature_bitmap
Definition: l2_bd.h:69
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
vlib_main_t vlib_node_runtime_t vlib_frame_t * frame
Definition: in2out_ed.c:1583
static char * l2input_error_strings[]
Definition: l2_input.c:142
void l2input_interface_mac_change(u32 sw_if_index, const u8 *old_address, const u8 *new_address)
Definition: l2_input.c:551
VLIB buffer representation.
Definition: buffer.h:102
u64 uword
Definition: types.h:112
vnet_sw_interface_t * sw_interfaces
Definition: interface.h:872
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:297
l2_bridge_domain_t * bd_configs
Definition: l2_input.h:65
#define vnet_buffer(b)
Definition: buffer.h:417
#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)
u32 sw_if_index
Definition: l2_bd.h:55
void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
Definition: trace.c:577
u8 si
Definition: lisp_types.api:47
l2input_next_t
Definition: l2_input.c:148
static_always_inline void vlib_get_buffers(vlib_main_t *vm, u32 *bi, vlib_buffer_t **b, int count)
Translate array of buffer indices into buffer pointers.
Definition: buffer_funcs.h:280
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:301
#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:556
bd_main_t bd_main
Definition: l2_bd.c:44
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
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
vl_api_interface_index_t sw_if_index
Definition: wireguard.api:33
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