FD.io VPP  v19.04.2-12-g66b1689
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; 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  /* Disable ARP-term for non-ARP and non-ICMP6 packet */
200  if (ethertype != ETHERNET_TYPE_ARP &&
201  (ethertype != ETHERNET_TYPE_IP6 || protocol != IP_PROTOCOL_ICMP6))
202  feat_mask &= ~(L2INPUT_FEAT_ARP_TERM);
203 
204  /*
205  * For packet from BVI - set SHG of ARP request or ICMPv6 neighbor
206  * solicitation packet from BVI to 0 so it can also flood to VXLAN
207  * tunnels or other ports with the same SHG as that of the BVI.
208  */
209  else if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] ==
210  L2INPUT_BVI))
211  {
212  if (ethertype == ETHERNET_TYPE_ARP)
213  {
215  if (arp0->opcode ==
216  clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_request))
217  vnet_buffer (b0)->l2.shg = 0;
218  }
219  else /* must be ICMPv6 */
220  {
221  ip6_header_t *iph0 = (ip6_header_t *) l3h0;
222  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh0;
223  ndh0 = ip6_next_header (iph0);
224  if (ndh0->icmp.type == ICMP6_neighbor_solicitation)
225  vnet_buffer (b0)->l2.shg = 0;
226  }
227  }
228  }
229  else
230  {
231  /*
232  * For packet from BVI - set SHG of unicast packet from BVI to 0 so it
233  * is not dropped on output to VXLAN tunnels or other ports with the
234  * same SHG as that of the BVI.
235  */
237  L2INPUT_BVI))
238  vnet_buffer (b0)->l2.shg = 0;
239  }
240 
241 
242  if (config->bridge)
243  {
244  /* Do bridge-domain processing */
245  u16 bd_index0 = config->bd_index;
246  /* save BD ID for next feature graph nodes */
247  vnet_buffer (b0)->l2.bd_index = bd_index0;
248 
249  /* Get config for the bridge domain interface */
250  l2_bridge_domain_t *bd_config =
251  vec_elt_at_index (msm->bd_configs, bd_index0);
252 
253  /* Save bridge domain and interface seq_num */
254  /* *INDENT-OFF* */
255  l2fib_seq_num_t sn = {
256  .swif = *l2fib_swif_seq_num(sw_if_index0),
257  .bd = bd_config->seq_num,
258  };
259  /* *INDENT-ON* */
260  vnet_buffer (b0)->l2.l2fib_sn = sn.as_u16;;
261  vnet_buffer (b0)->l2.bd_age = bd_config->mac_age;
262 
263  /*
264  * Process bridge domain feature enables.
265  * To perform learning/flooding/forwarding, the corresponding bit
266  * must be enabled in both the input interface config and in the
267  * bridge domain config. In the bd_bitmap, bits for features other
268  * than learning/flooding/forwarding should always be set.
269  */
270  feat_mask = feat_mask & bd_config->feature_bitmap;
271  }
272  else if (config->xconnect)
273  {
274  /* Set the output interface */
275  vnet_buffer (b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
276  }
277  else
278  feat_mask = L2INPUT_FEAT_DROP;
279 
280  /* mask out features from bitmap using packet type and bd config */
281  u32 feature_bitmap = config->feature_bitmap & feat_mask;
282 
283  /* save for next feature graph nodes */
284  vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;
285 
286  /* Determine the next node */
288  feature_bitmap);
289 }
290 
293  vlib_node_runtime_t * node, vlib_frame_t * frame,
294  int do_trace)
295 {
296  u32 n_left_from, *from, *to_next;
297  l2input_next_t next_index;
299 
300  from = vlib_frame_vector_args (frame);
301  n_left_from = frame->n_vectors; /* number of packets to process */
302  next_index = node->cached_next_index;
303 
304  while (n_left_from > 0)
305  {
306  u32 n_left_to_next;
307 
308  /* get space to enqueue frame to graph node "next_index" */
309  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
310 
311  while (n_left_from >= 8 && n_left_to_next >= 4)
312  {
313  u32 bi0, bi1, bi2, bi3;
314  vlib_buffer_t *b0, *b1, *b2, *b3;
315  u32 next0, next1, next2, next3;
316  u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
317 
318  /* Prefetch next iteration. */
319  {
320  vlib_buffer_t *p4, *p5, *p6, *p7;
321 
322  p4 = vlib_get_buffer (vm, from[4]);
323  p5 = vlib_get_buffer (vm, from[5]);
324  p6 = vlib_get_buffer (vm, from[6]);
325  p7 = vlib_get_buffer (vm, from[7]);
326 
327  /* Prefetch the buffer header and packet for the N+2 loop iteration */
328  vlib_prefetch_buffer_header (p4, LOAD);
329  vlib_prefetch_buffer_header (p5, LOAD);
330  vlib_prefetch_buffer_header (p6, LOAD);
331  vlib_prefetch_buffer_header (p7, LOAD);
332 
337 
338  /*
339  * Don't bother prefetching the bridge-domain config (which
340  * depends on the input config above). Only a small number of
341  * bridge domains are expected. Plus the structure is small
342  * and several fit in a cache line.
343  */
344  }
345 
346  /* speculatively enqueue b0 and b1 to the current next frame */
347  /* bi is "buffer index", b is pointer to the buffer */
348  to_next[0] = bi0 = from[0];
349  to_next[1] = bi1 = from[1];
350  to_next[2] = bi2 = from[2];
351  to_next[3] = bi3 = from[3];
352  from += 4;
353  to_next += 4;
354  n_left_from -= 4;
355  n_left_to_next -= 4;
356 
357  b0 = vlib_get_buffer (vm, bi0);
358  b1 = vlib_get_buffer (vm, bi1);
359  b2 = vlib_get_buffer (vm, bi2);
360  b3 = vlib_get_buffer (vm, bi3);
361 
362  if (do_trace)
363  {
364  /* RX interface handles */
365  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
366  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
367  sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_RX];
368  sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_RX];
369 
370  if (b0->flags & VLIB_BUFFER_IS_TRACED)
371  {
373  l2input_trace_t *t =
374  vlib_add_trace (vm, node, b0, sizeof (*t));
375  t->sw_if_index = sw_if_index0;
376  clib_memcpy_fast (t->src, h0->src_address, 6);
377  clib_memcpy_fast (t->dst, h0->dst_address, 6);
378  }
379  if (b1->flags & VLIB_BUFFER_IS_TRACED)
380  {
382  l2input_trace_t *t =
383  vlib_add_trace (vm, node, b1, sizeof (*t));
384  t->sw_if_index = sw_if_index1;
385  clib_memcpy_fast (t->src, h1->src_address, 6);
386  clib_memcpy_fast (t->dst, h1->dst_address, 6);
387  }
388  if (b2->flags & VLIB_BUFFER_IS_TRACED)
389  {
391  l2input_trace_t *t =
392  vlib_add_trace (vm, node, b2, sizeof (*t));
393  t->sw_if_index = sw_if_index2;
394  clib_memcpy_fast (t->src, h2->src_address, 6);
395  clib_memcpy_fast (t->dst, h2->dst_address, 6);
396  }
397  if (b3->flags & VLIB_BUFFER_IS_TRACED)
398  {
400  l2input_trace_t *t =
401  vlib_add_trace (vm, node, b3, sizeof (*t));
402  t->sw_if_index = sw_if_index3;
403  clib_memcpy_fast (t->src, h3->src_address, 6);
404  clib_memcpy_fast (t->dst, h3->dst_address, 6);
405  }
406  }
407 
408  classify_and_dispatch (msm, b0, &next0);
409  classify_and_dispatch (msm, b1, &next1);
410  classify_and_dispatch (msm, b2, &next2);
411  classify_and_dispatch (msm, b3, &next3);
412 
413  /* verify speculative enqueues, maybe switch current next frame */
414  /* if next0==next1==next_index then nothing special needs to be done */
415  vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
416  to_next, n_left_to_next,
417  bi0, bi1, bi2, bi3,
418  next0, next1, next2, next3);
419  }
420 
421  while (n_left_from > 0 && n_left_to_next > 0)
422  {
423  u32 bi0;
424  vlib_buffer_t *b0;
425  u32 next0;
426  u32 sw_if_index0;
427 
428  /* speculatively enqueue b0 to the current next frame */
429  bi0 = from[0];
430  to_next[0] = bi0;
431  from += 1;
432  to_next += 1;
433  n_left_from -= 1;
434  n_left_to_next -= 1;
435 
436  b0 = vlib_get_buffer (vm, bi0);
437 
438  if (do_trace && PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
439  {
441  l2input_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
442  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
443  t->sw_if_index = sw_if_index0;
444  clib_memcpy_fast (t->src, h0->src_address, 6);
445  clib_memcpy_fast (t->dst, h0->dst_address, 6);
446  }
447 
448  classify_and_dispatch (msm, b0, &next0);
449 
450  /* verify speculative enqueue, maybe switch current next frame */
451  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
452  to_next, n_left_to_next,
453  bi0, next0);
454  }
455 
456  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
457  }
458 
460  L2INPUT_ERROR_L2INPUT, frame->n_vectors);
461 
462  return frame->n_vectors;
463 }
464 
466  vlib_node_runtime_t * node, vlib_frame_t * frame)
467 {
468  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
469  return l2input_node_inline (vm, node, frame, 1 /* do_trace */ );
470  return l2input_node_inline (vm, node, frame, 0 /* do_trace */ );
471 }
472 
473 /* *INDENT-OFF* */
475  .name = "l2-input",
476  .vector_size = sizeof (u32),
477  .format_trace = format_l2input_trace,
478  .format_buffer = format_ethernet_header_with_length,
479  .type = VLIB_NODE_TYPE_INTERNAL,
480 
481  .n_errors = ARRAY_LEN(l2input_error_strings),
482  .error_strings = l2input_error_strings,
483 
484  .n_next_nodes = L2INPUT_N_NEXT,
485 
486  /* edit / add dispositions here */
487  .next_nodes = {
488  [L2INPUT_NEXT_LEARN] = "l2-learn",
489  [L2INPUT_NEXT_FWD] = "l2-fwd",
490  [L2INPUT_NEXT_DROP] = "error-drop",
491  },
492 };
493 /* *INDENT-ON* */
494 
495 #ifndef CLIB_MARCH_VARIANT
496 clib_error_t *
498 {
500 
501  mp->vlib_main = vm;
502  mp->vnet_main = vnet_get_main ();
503 
504  /* Get packets RX'd from L2 interfaces */
506 
507  /* Create the config vector */
508  vec_validate (mp->configs, 100);
509  /* create 100 sw interface entries and zero them */
510 
511  /* Initialize the feature next-node indexes */
513  l2input_node.index,
517 
518  return 0;
519 }
520 
522 
523 
524 /** Get a pointer to the config for the given interface. */
527 {
529 
530  vec_validate (mp->configs, sw_if_index);
531  return vec_elt_at_index (mp->configs, sw_if_index);
532 }
533 
534 /** Enable (or disable) the feature in the bitmap for the given interface. */
535 u32
537  l2input_feat_masks_t feature_bitmap, u32 enable)
538 {
539  l2_input_config_t *config = l2input_intf_config (sw_if_index);
540 
541  if (enable)
542  config->feature_bitmap |= feature_bitmap;
543  else
544  config->feature_bitmap &= ~feature_bitmap;
545 
546  return config->feature_bitmap;
547 }
548 
549 u32
550 l2input_set_bridge_features (u32 bd_index, u32 feat_mask, u32 feat_value)
551 {
552  l2_bridge_domain_t *bd_config = l2input_bd_config (bd_index);;
553  bd_validate (bd_config);
554  bd_config->feature_bitmap =
555  (bd_config->feature_bitmap & ~feat_mask) | feat_value;
556  return bd_config->feature_bitmap;
557 }
558 
559 void
561  const u8 * old_address, const u8 * new_address)
562 {
563  /* check if the sw_if_index passed is a BVI in a BD */
564  l2_input_config_t *intf_config;
565 
566  intf_config = l2input_intf_config (sw_if_index);
567 
568  if (intf_config->bridge && intf_config->bvi)
569  {
570  /* delete and re-add l2fib entry for the bvi interface */
571  l2fib_del_entry (old_address, intf_config->bd_index, sw_if_index);
572  l2fib_add_entry (new_address,
573  intf_config->bd_index,
574  sw_if_index,
575  L2FIB_ENTRY_RESULT_FLAG_BVI |
576  L2FIB_ENTRY_RESULT_FLAG_STATIC);
577  }
578 }
579 
580 /**
581  * Set the subinterface to run in l2 or l3 mode.
582  * For L3 mode, just the sw_if_index is specified.
583  * For bridged mode, the bd id and bvi flag are also specified.
584  * For xconnect mode, the peer sw_if_index is also specified.
585  * Return 0 if ok, or non-0 if there was an error.
586  */
587 
588 u32
590  u32 mode, /* One of L2 modes or back to L3 mode */
591  u32 sw_if_index, /* sw interface index */
592  u32 bd_index, /* for bridged interface */
593  l2_bd_port_type_t port_type, /* port_type */
594  u32 shg, /* the bridged interface split horizon group */
595  u32 xc_sw_if_index) /* peer interface for xconnect */
596 {
599  vnet_main_t *vnm = vnet_get_main ();
601  l2_output_config_t *out_config;
602  l2_input_config_t *config;
603  l2_bridge_domain_t *bd_config;
604  i32 l2_if_adjust = 0;
605  vnet_device_class_t *dev_class;
606 
607  hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
608  config = l2input_intf_config (sw_if_index);
609 
610  if (config->bridge)
611  {
612  /* Interface is already in bridge mode. Undo the existing config. */
613  bd_config = vec_elt_at_index (mp->bd_configs, config->bd_index);
614 
615  /* remove interface from flood vector */
616  bd_remove_member (bd_config, sw_if_index);
617 
618  /* undo any BVI-related config */
619  if (bd_config->bvi_sw_if_index == sw_if_index)
620  {
622 
623  bd_config->bvi_sw_if_index = ~0;
624  config->bvi = 0;
625 
626  /* delete the l2fib entry for the bvi interface */
627  l2fib_del_entry (hi->hw_address, config->bd_index, sw_if_index);
628 
629  /* since this is a no longer BVI interface do not to flood to it */
630  si = vnet_get_sw_interface (vnm, sw_if_index);
632  }
633  if (bd_config->uu_fwd_sw_if_index == sw_if_index)
634  {
635  bd_config->uu_fwd_sw_if_index = ~0;
636  bd_config->feature_bitmap &= ~L2INPUT_FEAT_UU_FWD;
637  }
638 
639  /* Clear MACs learned on the interface */
640  if ((config->feature_bitmap & L2INPUT_FEAT_LEARN) ||
641  (bd_config->feature_bitmap & L2INPUT_FEAT_LEARN))
642  l2fib_flush_int_mac (vm, sw_if_index);
643 
644  l2_if_adjust--;
645  }
646  else if (config->xconnect)
647  {
648  l2_if_adjust--;
649  }
650 
651  /* Make sure vector is big enough */
654 
655  /* Initialize the l2-input configuration for the interface */
656  if (mode == MODE_L3)
657  {
658  /* Set L2 config to BD index 0 so that if any packet accidentally
659  * came in on L2 path, it will be dropped in BD 0 */
660  config->xconnect = 0;
661  config->bridge = 0;
662  config->shg = 0;
663  config->bd_index = 0;
664  config->feature_bitmap = L2INPUT_FEAT_DROP;
665 
666  /* Clear L2 output config */
667  out_config = l2output_intf_config (sw_if_index);
668  clib_memset (out_config, 0, sizeof (l2_output_config_t));
669 
670  /* Make sure any L2-output packet to this interface now in L3 mode is
671  * dropped. This may happen if L2 FIB MAC entry is stale */
673  }
674  else
675  {
676  /* Add or update l2-output node next-arc and output_node_index_vec table
677  * for the interface */
678  l2output_create_output_node_mapping (vm, vnet_main, sw_if_index);
679 
680  if (mode == MODE_L2_BRIDGE)
681  {
682  u8 member_flags;
683 
684  /*
685  * Remove a check that the interface must be an Ethernet.
686  * Specifically so we can bridge to L3 tunnel interfaces.
687  * Here's the check:
688  * if (hi->hw_class_index != ethernet_hw_interface_class.index)
689  *
690  */
691  if (!hi)
692  return MODE_ERROR_ETH; /* non-ethernet */
693 
694  config->xconnect = 0;
695  config->bridge = 1;
696  config->bd_index = bd_index;
697  *l2fib_valid_swif_seq_num (sw_if_index) += 1;
698 
699  /*
700  * Enable forwarding, flooding, learning and ARP termination by default
701  * (note that ARP term is disabled on BD feature bitmap by default)
702  */
703  config->feature_bitmap |= (L2INPUT_FEAT_FWD |
704  L2INPUT_FEAT_UU_FLOOD |
705  L2INPUT_FEAT_UU_FWD |
706  L2INPUT_FEAT_FLOOD |
707  L2INPUT_FEAT_LEARN |
708  L2INPUT_FEAT_ARP_TERM);
709 
710  /* Make sure last-chance drop is configured */
711  config->feature_bitmap |= L2INPUT_FEAT_DROP;
712 
713  /* Make sure xconnect is disabled */
714  config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT;
715 
716  /* Set up bridge domain */
717  bd_config = l2input_bd_config (bd_index);
718  bd_validate (bd_config);
719 
720  /* TODO: think: add l2fib entry even for non-bvi interface? */
721 
722  /* Do BVI interface initializations */
723  if (L2_BD_PORT_TYPE_BVI == port_type)
724  {
726 
727  /* ensure BD has no bvi interface (or replace that one with this??) */
728  if (bd_config->bvi_sw_if_index != ~0)
729  {
730  return MODE_ERROR_BVI_DEF; /* bd already has a bvi interface */
731  }
732  bd_config->bvi_sw_if_index = sw_if_index;
733  config->bvi = 1;
734 
735  /* create the l2fib entry for the bvi interface */
736  l2fib_add_entry (hi->hw_address, bd_index, sw_if_index,
737  L2FIB_ENTRY_RESULT_FLAG_BVI |
738  L2FIB_ENTRY_RESULT_FLAG_STATIC);
739 
740  /* Disable learning by default. no use since l2fib entry is static. */
741  config->feature_bitmap &= ~L2INPUT_FEAT_LEARN;
742 
743  /* since this is a BVI interface we want to flood to it */
744  si = vnet_get_sw_interface (vnm, sw_if_index);
746  member_flags = L2_FLOOD_MEMBER_BVI;
747  }
748  else if (L2_BD_PORT_TYPE_UU_FWD == port_type)
749  {
750  bd_config->uu_fwd_sw_if_index = sw_if_index;
751  bd_config->feature_bitmap |= L2INPUT_FEAT_UU_FWD;
752  }
753  else
754  {
755  member_flags = L2_FLOOD_MEMBER_NORMAL;
756  }
757 
758  if (L2_BD_PORT_TYPE_NORMAL == port_type ||
759  L2_BD_PORT_TYPE_BVI == port_type)
760  {
761  /* Add interface to bridge-domain flood vector */
762  l2_flood_member_t member = {
764  .flags = member_flags,
765  .shg = shg,
766  };
767  bd_add_member (bd_config, &member);
768  }
769  }
770  else if (mode == MODE_L2_XC)
771  {
772  config->xconnect = 1;
773  config->bridge = 0;
774  config->output_sw_if_index = xc_sw_if_index;
775 
776  /* Make sure last-chance drop is configured */
777  config->feature_bitmap |= L2INPUT_FEAT_DROP;
778 
779  /* Make sure bridging features are disabled */
780  config->feature_bitmap &=
781  ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
782 
783  config->feature_bitmap |= L2INPUT_FEAT_XCONNECT;
784  shg = 0; /* not used in xconnect */
785  }
786  else if (mode == MODE_L2_CLASSIFY)
787  {
788  config->xconnect = 1;
789  config->bridge = 0;
790  config->output_sw_if_index = xc_sw_if_index;
791 
792  /* Make sure last-chance drop is configured */
793  config->feature_bitmap |=
794  L2INPUT_FEAT_DROP | L2INPUT_FEAT_INPUT_CLASSIFY;
795 
796  /* Make sure bridging features are disabled */
797  config->feature_bitmap &=
798  ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
799  shg = 0; /* not used in xconnect */
800 
801  /* Insure all packets go to ethernet-input */
802  ethernet_set_rx_redirect (vnet_main, hi, 1);
803  }
804 
805  /* set up split-horizon group and set output feature bit */
806  config->shg = shg;
807  out_config = l2output_intf_config (sw_if_index);
808  out_config->shg = shg;
809  out_config->feature_bitmap |= L2OUTPUT_FEAT_OUTPUT;
810 
811  /*
812  * Test: remove this when non-IP features can be configured.
813  * Enable a non-IP feature to test IP feature masking
814  * config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT;
815  */
816 
817  l2_if_adjust++;
818  }
819 
820  /* Adjust count of L2 interfaces */
821  hi->l2_if_count += l2_if_adjust;
822 
824  {
825  if ((hi->l2_if_count == 1) && (l2_if_adjust == 1))
826  {
827  /* Just added first L2 interface on this port */
828 
829  /* Set promiscuous mode on the l2 interface */
830  ethernet_set_flags (vnet_main, hi->hw_if_index,
832 
833  /* ensure all packets go to ethernet-input */
834  ethernet_set_rx_redirect (vnet_main, hi, 1);
835 
836  }
837  else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1))
838  {
839  /* Just removed only L2 subinterface on this port */
840 
841  /* Disable promiscuous mode on the l2 interface */
842  ethernet_set_flags (vnet_main, hi->hw_if_index, 0);
843 
844  /* Allow ip packets to go directly to ip4-input etc */
845  ethernet_set_rx_redirect (vnet_main, hi, 0);
846  }
847  }
848 
849  /* Set up the L2/L3 flag in the interface parsing tables */
850  ethernet_sw_interface_set_l2_mode (vnm, sw_if_index, (mode != MODE_L3));
851 
852  dev_class = vnet_get_device_class (vnet_main, hi->dev_class_index);
853  if (dev_class->set_l2_mode_function)
854  {
855  dev_class->set_l2_mode_function (vnet_main, hi, l2_if_adjust);
856  }
857 
858  return 0;
859 }
860 #endif /* CLIB_MARCH_VARIANT */
861 
862 /**
863  * Set subinterface in bridging mode with a bridge-domain ID.
864  * The CLI format is:
865  * set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group]
866  */
867 static clib_error_t *
869  unformat_input_t * input, vlib_cli_command_t * cmd)
870 {
871  vnet_main_t *vnm = vnet_get_main ();
872  l2_bd_port_type_t port_type;
873  clib_error_t *error = 0;
874  u32 bd_index, bd_id;
876  u32 rc;
877  u32 shg;
878 
879  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
880  {
881  error = clib_error_return (0, "unknown interface `%U'",
882  format_unformat_error, input);
883  goto done;
884  }
885 
886  if (!unformat (input, "%d", &bd_id))
887  {
888  error = clib_error_return (0, "expected bridge domain ID `%U'",
889  format_unformat_error, input);
890  goto done;
891  }
892 
893  if (bd_id > L2_BD_ID_MAX)
894  {
895  error = clib_error_return (0, "bridge domain ID exceed 16M limit",
896  format_unformat_error, input);
897  goto done;
898  }
899  bd_index = bd_find_or_add_bd_index (&bd_main, bd_id);
900 
901  /* optional bvi */
902  port_type = L2_BD_PORT_TYPE_NORMAL;
903  if (unformat (input, "bvi"))
904  port_type = L2_BD_PORT_TYPE_BVI;
905  if (unformat (input, "uu-fwd"))
906  port_type = L2_BD_PORT_TYPE_UU_FWD;
907 
908  /* optional split horizon group */
909  shg = 0;
910  (void) unformat (input, "%d", &shg);
911 
912  /* set the interface mode */
913  if ((rc =
914  set_int_l2_mode (vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index,
915  port_type, shg, 0)))
916  {
917  if (rc == MODE_ERROR_ETH)
918  {
919  error = clib_error_return (0, "bridged interface must be ethernet",
920  format_unformat_error, input);
921  }
922  else if (rc == MODE_ERROR_BVI_DEF)
923  {
924  error =
925  clib_error_return (0, "bridge-domain already has a bvi interface",
926  format_unformat_error, input);
927  }
928  else
929  {
930  error = clib_error_return (0, "invalid configuration for interface",
931  format_unformat_error, input);
932  }
933  goto done;
934  }
935 
936 done:
937  return error;
938 }
939 
940 /*?
941  * Use this command put an interface into Layer 2 bridge domain. If a
942  * bridge-domain with the provided bridge-domain-id does not exist, it
943  * will be created. Interfaces in a bridge-domain forward packets to
944  * other interfaces in the same bridge-domain based on destination mac
945  * address. To remove an interface from a the Layer 2 bridge domain,
946  * put the interface in a different mode, for example Layer 3 mode.
947  *
948  * Optionally, an interface can be added to a Layer 2 bridge-domain as
949  * a Bridged Virtual Interface (bvi). Only one interface in a Layer 2
950  * bridge-domain can be a bvi.
951  *
952  * Optionally, a split-horizon group can also be specified. This defaults
953  * to 0 if not specified.
954  *
955  * @cliexpar
956  * Example of how to configure a Layer 2 bridge-domain with three
957  * interfaces (where 200 is the bridge-domain-id):
958  * @cliexcmd{set interface l2 bridge GigabitEthernet0/8/0.200 200}
959  * This interface is added a BVI interface:
960  * @cliexcmd{set interface l2 bridge GigabitEthernet0/9/0.200 200 bvi}
961  * This interface also has a split-horizon group of 1 specified:
962  * @cliexcmd{set interface l2 bridge GigabitEthernet0/a/0.200 200 1}
963  * Example of how to remove an interface from a Layer2 bridge-domain:
964  * @cliexcmd{set interface l3 GigabitEthernet0/a/0.200}
965 ?*/
966 /* *INDENT-OFF* */
967 VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = {
968  .path = "set interface l2 bridge",
969  .short_help = "set interface l2 bridge <interface> <bridge-domain-id> [bvi|uu-fwd] [shg]",
970  .function = int_l2_bridge,
971 };
972 /* *INDENT-ON* */
973 
974 /**
975  * Set subinterface in xconnect mode with another interface.
976  * The CLI format is:
977  * set interface l2 xconnect <interface> <peer interface>
978  */
979 static clib_error_t *
981  unformat_input_t * input, vlib_cli_command_t * cmd)
982 {
983  vnet_main_t *vnm = vnet_get_main ();
984  clib_error_t *error = 0;
986  u32 xc_sw_if_index;
987 
988  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
989  {
990  error = clib_error_return (0, "unknown interface `%U'",
991  format_unformat_error, input);
992  goto done;
993  }
994 
995  if (!unformat_user
996  (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index))
997  {
998  error = clib_error_return (0, "unknown peer interface `%U'",
999  format_unformat_error, input);
1000  goto done;
1001  }
1002 
1003  /* set the interface mode */
1004  if (set_int_l2_mode
1005  (vm, vnm, MODE_L2_XC, sw_if_index, 0, L2_BD_PORT_TYPE_NORMAL,
1006  0, xc_sw_if_index))
1007  {
1008  error = clib_error_return (0, "invalid configuration for interface",
1009  format_unformat_error, input);
1010  goto done;
1011  }
1012 
1013 done:
1014  return error;
1015 }
1016 
1017 /*?
1018  * Use this command put an interface into Layer 2 cross-connect mode.
1019  * Both interfaces must be in this mode for bi-directional traffic. All
1020  * packets received on one interface will be transmitted to the other.
1021  * To remove the Layer 2 cross-connect, put the interface in a different
1022  * mode, for example Layer 3 mode.
1023  *
1024  * @cliexpar
1025  * Example of how to configure a Layer2 cross-connect between two interfaces:
1026  * @cliexcmd{set interface l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300}
1027  * @cliexcmd{set interface l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300}
1028  * Example of how to remove a Layer2 cross-connect:
1029  * @cliexcmd{set interface l3 GigabitEthernet0/8/0.300}
1030  * @cliexcmd{set interface l3 GigabitEthernet0/9/0.300}
1031 ?*/
1032 /* *INDENT-OFF* */
1033 VLIB_CLI_COMMAND (int_l2_xc_cli, static) = {
1034  .path = "set interface l2 xconnect",
1035  .short_help = "set interface l2 xconnect <interface> <peer interface>",
1036  .function = int_l2_xc,
1037 };
1038 /* *INDENT-ON* */
1039 
1040 /**
1041  * Set subinterface in L3 mode.
1042  * The CLI format is:
1043  * set interface l3 <interface>
1044  */
1045 static clib_error_t *
1047 {
1048  vnet_main_t *vnm = vnet_get_main ();
1049  clib_error_t *error = 0;
1050  u32 sw_if_index;
1051 
1052  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
1053  {
1054  error = clib_error_return (0, "unknown interface `%U'",
1055  format_unformat_error, input);
1056  goto done;
1057  }
1058 
1059  /* set the interface mode */
1060  if (set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0,
1061  L2_BD_PORT_TYPE_NORMAL, 0, 0))
1062  {
1063  error = clib_error_return (0, "invalid configuration for interface",
1064  format_unformat_error, input);
1065  goto done;
1066  }
1067 
1068 done:
1069  return error;
1070 }
1071 
1072 /*?
1073  * Modify the packet processing mode of the interface to Layer 3, which
1074  * implies packets will be routed. This is the default mode of an interface.
1075  * Use this command to remove an interface from a Layer 2 cross-connect or a
1076  * Layer 2 bridge.
1077  *
1078  * @cliexpar
1079  * Example of how to set the mode of an interface to Layer 3:
1080  * @cliexcmd{set interface l3 GigabitEthernet0/8/0.200}
1081 ?*/
1082 /* *INDENT-OFF* */
1083  VLIB_CLI_COMMAND (int_l3_cli, static) = {
1084  .path = "set interface l3",
1085  .short_help = "set interface l3 <interface>",
1086  .function = int_l3,
1087 };
1088 /* *INDENT-ON* */
1089 
1090 /**
1091  * Show interface mode.
1092  * The CLI format is:
1093  * show mode [<if-name1> <if-name2> ...]
1094  */
1095 static clib_error_t *
1097  unformat_input_t * input, vlib_cli_command_t * cmd)
1098 {
1099  vnet_main_t *vnm = vnet_get_main ();
1100  clib_error_t *error = 0;
1101  char *mode;
1102  u8 *args;
1104 
1105  vnet_sw_interface_t *si, *sis = 0;
1106  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1107  {
1108  u32 sw_if_index;
1109 
1110  /* See if user wants to show specific interface */
1111  if (unformat
1112  (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
1113  {
1114  si = pool_elt_at_index (im->sw_interfaces, sw_if_index);
1115  vec_add1 (sis, si[0]);
1116  }
1117  else
1118  {
1119  error = clib_error_return (0, "unknown input `%U'",
1120  format_unformat_error, input);
1121  goto done;
1122  }
1123  }
1124 
1125  if (vec_len (sis) == 0) /* Get all interfaces */
1126  {
1127  /* Gather interfaces. */
1129  _vec_len (sis) = 0;
1130  /* *INDENT-OFF* */
1131  pool_foreach (si, im->sw_interfaces, ({ vec_add1 (sis, si[0]); }));
1132  /* *INDENT-ON* */
1133  }
1134 
1135  vec_foreach (si, sis)
1136  {
1138  if (config->bridge)
1139  {
1140  u32 bd_id;
1141  mode = "l2 bridge";
1142  bd_id = l2input_main.bd_configs[config->bd_index].bd_id;
1143 
1144  args = format (0, "bd_id %d%s%d", bd_id,
1145  config->bvi ? " bvi shg " : " shg ", config->shg);
1146  }
1147  else if (config->xconnect)
1148  {
1149  mode = "l2 xconnect";
1150  args = format (0, "%U",
1152  vnm, config->output_sw_if_index);
1153  }
1154  else
1155  {
1156  mode = "l3";
1157  args = format (0, " ");
1158  }
1159  vlib_cli_output (vm, "%s %U %v\n",
1160  mode,
1162  vnm, si->sw_if_index, args);
1163  vec_free (args);
1164  }
1165 
1166 done:
1167  vec_free (sis);
1168 
1169  return error;
1170 }
1171 
1172 /*?
1173  * Show the packet processing mode (Layer2 cross-connect, Layer 2 bridge,
1174  * Layer 3 routed) of all interfaces and sub-interfaces, or limit the
1175  * output to just the provided list of interfaces and sub-interfaces.
1176  * The output shows the mode, the interface, and if the interface is
1177  * a member of a bridge, the bridge-domain-id and the split horizon group (shg).
1178  *
1179  * @cliexpar
1180  * Example of displaying the mode of all interfaces:
1181  * @cliexstart{show mode}
1182  * l3 local0
1183  * l3 GigabitEthernet0/8/0
1184  * l3 GigabitEthernet0/9/0
1185  * l3 GigabitEthernet0/a/0
1186  * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
1187  * l2 bridge GigabitEthernet0/9/0.200 bd_id 200 shg 0
1188  * l2 bridge GigabitEthernet0/a/0.200 bd_id 200 shg 0
1189  * l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300
1190  * l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300
1191  * @cliexend
1192  * Example of displaying the mode of a selected list of interfaces:
1193  * @cliexstart{show mode GigabitEthernet0/8/0 GigabitEthernet0/8/0.200}
1194  * l3 GigabitEthernet0/8/0
1195  * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
1196  * @cliexend
1197 ?*/
1198 /* *INDENT-OFF* */
1199 VLIB_CLI_COMMAND (show_l2_mode, static) = {
1200  .path = "show mode",
1201  .short_help = "show mode [<if-name1> <if-name2> ...]",
1202  .function = show_int_mode,
1203 };
1204 /* *INDENT-ON* */
1205 
1206 #define foreach_l2_init_function \
1207 _(feat_bitmap_drop_init) \
1208 _(l2fib_init) \
1209 _(l2_input_classify_init) \
1210 _(l2bd_init) \
1211 _(l2fwd_init) \
1212 _(l2_in_out_acl_init) \
1213 _(l2input_init) \
1214 _(l2_vtr_init) \
1215 _(l2_invtr_init) \
1216 _(l2_efp_filter_init) \
1217 _(l2learn_init) \
1218 _(l2flood_init) \
1219 _(l2output_init) \
1220 _(l2_patch_init) \
1221 _(l2_xcrw_init)
1222 
1223 #ifndef CLIB_MARCH_VARIANT
1224 clib_error_t *
1226 {
1227  clib_error_t *error;
1228 
1229 #define _(a) do { \
1230  if ((error = vlib_call_init_function (vm, a))) return error; } \
1231 while (0);
1233 #undef _
1234  return 0;
1235 }
1236 
1238 #endif /* CLIB_MARCH_VARIANT */
1239 
1240 /*
1241  * fd.io coding-style-patch-verification: ON
1242  *
1243  * Local Variables:
1244  * eval: (c-set-style "gnu")
1245  * End:
1246  */
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:439
u32 sw_if_index
Definition: ipsec_gre.api:37
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
vmrglw vmrglh hi
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:1046
l2_input_config_t * configs
Definition: l2_input.h:61
#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:47
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:550
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:292
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:526
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
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:522
vlib_node_registration_t l2input_node
(constructor) VLIB_REGISTER_NODE (l2input_node)
Definition: l2_input.c:474
#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
int i
static_always_inline u8 * l2fib_swif_seq_num(u32 sw_if_index)
Definition: l2_fib.h:457
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:983
clib_memset(h->entries, 0, sizeof(h->entries[0])*entries)
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
vl_api_ip4_address_t dst
Definition: ipsec_gre.api:39
#define VLIB_NODE_FN(node)
Definition: node.h:201
u32 bd_remove_member(l2_bridge_domain_t *bd_config, u32 sw_if_index)
Definition: l2_bd.c:192
#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:868
format_function_t format_vnet_sw_if_index_name
unsigned char u8
Definition: types.h:56
l2input_error_t
Definition: l2_input.c:135
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:709
#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:493
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
static uword ethernet_address_cast(u8 *a)
Definition: packet.h:67
u32 output_sw_if_index
Definition: l2_input.h:35
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:211
#define vec_new(T, N)
Create new vector of given type and length (unspecified alignment, no header).
Definition: vec.h:311
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:147
#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:401
unsigned int u32
Definition: types.h:88
void ethernet_set_rx_redirect(vnet_main_t *vnm, vnet_hw_interface_t *hi, u32 enable)
Definition: node.c:1941
#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:514
static_always_inline u8 * l2fib_valid_swif_seq_num(u32 sw_if_index)
Definition: l2_fib.h:464
vnet_main_t * vnet_main
Definition: l2_input.h:68
u32 bd_id
Definition: gbp.api:269
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
vl_api_ip4_address_t src
Definition: ipsec_gre.api:38
l2output_main_t l2output_main
Definition: l2_output.c:78
u32 feat_next_node_index[32]
Definition: l2_input.h:58
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
l2input_feat_masks_t
Definition: l2_input.h:138
#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:368
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:980
#define L2INPUT_BVI
Definition: l2_input.h:96
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1180
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:1206
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
u32 l2fib_del_entry(const u8 *mac, u32 bd_index, u32 sw_if_index)
Delete an entry from the l2fib.
Definition: l2_fib.c:685
u16 n_vectors
Definition: node.h:395
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:80
vlib_main_t * vm
Definition: buffer.c:312
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:341
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:215
void ethernet_register_l2_input(vlib_main_t *vm, u32 node_index)
Definition: node.c:2092
#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:465
static_always_inline l2_bridge_domain_t * l2input_bd_config(u32 bd_index)
Definition: l2_input.h:85
char ** l2input_get_feat_names(void)
Return an array of strings containing graph node names of each feature.
Definition: l2_input.c:62
vl_api_vxlan_gbp_api_tunnel_mode_t mode
Definition: vxlan_gbp.api:44
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:412
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:155
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:514
#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:194
#define foreach_l2input_feat
Definition: l2_input.h:101
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:1096
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:589
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:536
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:212
clib_error_t * l2_init(vlib_main_t *vm)
Definition: l2_input.c:1225
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:57
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:497
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:1752
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:560
VLIB buffer representation.
Definition: buffer.h:102
u64 uword
Definition: types.h:112
vnet_sw_interface_t * sw_interfaces
Definition: interface.h:815
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:274
l2_bridge_domain_t * bd_configs
Definition: l2_input.h:64
#define vnet_buffer(b)
Definition: buffer.h:369
#define MODE_ERROR_BVI_DEF
Definition: l2_input.h:216
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
#define MODE_L2_CLASSIFY
Definition: l2_input.h:213
#define vec_foreach(var, vec)
Vector iterator.
#define get_u16(addr)
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: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:486
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:762
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:805
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:972
Definition: defs.h:46
u8 protocol
Definition: ipsec.api:96
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:170
#define MODE_L3
Definition: l2_input.h:210
vlib_main_t * vlib_main
Definition: l2_input.h:67
u32 ethernet_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:372
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128