FD.io VPP  v19.01.2-3-gf61a1a8
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 /* Feature graph node names */
53 static char *l2input_feat_names[] = {
54 #define _(sym,name) name,
56 #undef _
57 };
58 
59 char **
61 {
62  return l2input_feat_names;
63 }
64 
65 u8 *
66 format_l2_input_features (u8 * s, va_list * args)
67 {
68  static char *display_names[] = {
69 #define _(sym,name) #sym,
71 #undef _
72  };
73  u32 feature_bitmap = va_arg (*args, u32);
74  u32 verbose = va_arg (*args, u32);
75 
76  if (feature_bitmap == 0)
77  {
78  s = format (s, " none configured");
79  return s;
80  }
81 
82  feature_bitmap &= ~L2INPUT_FEAT_DROP; /* Not a feature */
83  int i;
84  for (i = L2INPUT_N_FEAT; i >= 0; i--)
85  {
86  if (feature_bitmap & (1 << i))
87  {
88  if (verbose)
89  s = format (s, "%17s (%s)\n",
90  display_names[i], l2input_feat_names[i]);
91  else
92  s = format (s, "%s ", l2input_feat_names[i]);
93  }
94  }
95  return s;
96 }
97 
98 typedef struct
99 {
100  /* per-pkt trace data */
101  u8 src[6];
102  u8 dst[6];
106 
107 /* packet trace format function */
108 static u8 *
109 format_l2input_trace (u8 * s, va_list * args)
110 {
111  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
112  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
113  l2input_trace_t *t = va_arg (*args, l2input_trace_t *);
114 
115  s = format (s, "l2-input: sw_if_index %d dst %U src %U",
116  t->sw_if_index,
119  return s;
120 }
121 
123 
124 #define foreach_l2input_error \
125 _(L2INPUT, "L2 input packets") \
126 _(DROP, "L2 input drops")
127 
128 typedef enum
129 {
130 #define _(sym,str) L2INPUT_ERROR_##sym,
132 #undef _
135 
136 static char *l2input_error_strings[] = {
137 #define _(sym,string) string,
139 #undef _
140 };
141 
142 typedef enum
143 { /* */
149 
150 
153 {
154  /*
155  * Load L2 input feature struct
156  * Load bridge domain struct
157  * Parse ethernet header to determine unicast/mcast/broadcast
158  * take L2 input stat
159  * classify packet as IP/UDP/TCP, control, other
160  * mask feature bitmap
161  * go to first node in bitmap
162  * Later: optimize VTM
163  *
164  * For L2XC,
165  * set tx sw-if-handle
166  */
167 
168  u32 feat_mask = ~0;
169  u32 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
171 
172  /* Get config for the input interface */
173  l2_input_config_t *config = vec_elt_at_index (msm->configs, sw_if_index0);
174 
175  /* Save split horizon group */
176  vnet_buffer (b0)->l2.shg = config->shg;
177 
178  /* determine layer2 kind for stat and mask */
180  {
181  u8 *l3h0 = (u8 *) h0 + vnet_buffer (b0)->l2.l2_len;
182 
183 #define get_u16(addr) ( *((u16 *)(addr)) )
184  u16 ethertype = clib_net_to_host_u16 (get_u16 (l3h0 - 2));
185  u8 protocol = ((ip6_header_t *) l3h0)->protocol;
186 
187  /* Disable bridge forwarding (flooding will execute instead if not xconnect) */
188  feat_mask &= ~(L2INPUT_FEAT_FWD |
189  L2INPUT_FEAT_UU_FLOOD |
190  L2INPUT_FEAT_UU_FWD | L2INPUT_FEAT_GBP_FWD);
191 
192  /* Disable ARP-term for non-ARP and non-ICMP6 packet */
193  if (ethertype != ETHERNET_TYPE_ARP &&
194  (ethertype != ETHERNET_TYPE_IP6 || protocol != IP_PROTOCOL_ICMP6))
195  feat_mask &= ~(L2INPUT_FEAT_ARP_TERM);
196 
197  /*
198  * For packet from BVI - set SHG of ARP request or ICMPv6 neighbor
199  * solicitation packet from BVI to 0 so it can also flood to VXLAN
200  * tunnels or other ports with the same SHG as that of the BVI.
201  */
202  else if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] ==
203  L2INPUT_BVI))
204  {
205  if (ethertype == ETHERNET_TYPE_ARP)
206  {
208  if (arp0->opcode ==
209  clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_request))
210  vnet_buffer (b0)->l2.shg = 0;
211  }
212  else /* must be ICMPv6 */
213  {
214  ip6_header_t *iph0 = (ip6_header_t *) l3h0;
215  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh0;
216  ndh0 = ip6_next_header (iph0);
217  if (ndh0->icmp.type == ICMP6_neighbor_solicitation)
218  vnet_buffer (b0)->l2.shg = 0;
219  }
220  }
221  }
222  else
223  {
224  /*
225  * For packet from BVI - set SHG of unicast packet from BVI to 0 so it
226  * is not dropped on output to VXLAN tunnels or other ports with the
227  * same SHG as that of the BVI.
228  */
230  L2INPUT_BVI))
231  vnet_buffer (b0)->l2.shg = 0;
232  }
233 
234 
235  if (config->bridge)
236  {
237  /* Do bridge-domain processing */
238  u16 bd_index0 = config->bd_index;
239  /* save BD ID for next feature graph nodes */
240  vnet_buffer (b0)->l2.bd_index = bd_index0;
241 
242  /* Get config for the bridge domain interface */
243  l2_bridge_domain_t *bd_config =
244  vec_elt_at_index (msm->bd_configs, bd_index0);
245 
246  /* Save bridge domain and interface seq_num */
247  /* *INDENT-OFF* */
248  l2fib_seq_num_t sn = {
249  .swif = *l2fib_swif_seq_num(sw_if_index0),
250  .bd = bd_config->seq_num,
251  };
252  /* *INDENT-ON* */
253  vnet_buffer (b0)->l2.l2fib_sn = sn.as_u16;;
254  vnet_buffer (b0)->l2.bd_age = bd_config->mac_age;
255 
256  /*
257  * Process bridge domain feature enables.
258  * To perform learning/flooding/forwarding, the corresponding bit
259  * must be enabled in both the input interface config and in the
260  * bridge domain config. In the bd_bitmap, bits for features other
261  * than learning/flooding/forwarding should always be set.
262  */
263  feat_mask = feat_mask & bd_config->feature_bitmap;
264  }
265  else if (config->xconnect)
266  {
267  /* Set the output interface */
268  vnet_buffer (b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
269  }
270  else
271  feat_mask = L2INPUT_FEAT_DROP;
272 
273  /* mask out features from bitmap using packet type and bd config */
274  u32 feature_bitmap = config->feature_bitmap & feat_mask;
275 
276  /* save for next feature graph nodes */
277  vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;
278 
279  /* Determine the next node */
281  feature_bitmap);
282 }
283 
286  vlib_node_runtime_t * node, vlib_frame_t * frame,
287  int do_trace)
288 {
289  u32 n_left_from, *from, *to_next;
290  l2input_next_t next_index;
292 
293  from = vlib_frame_vector_args (frame);
294  n_left_from = frame->n_vectors; /* number of packets to process */
295  next_index = node->cached_next_index;
296 
297  while (n_left_from > 0)
298  {
299  u32 n_left_to_next;
300 
301  /* get space to enqueue frame to graph node "next_index" */
302  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
303 
304  while (n_left_from >= 8 && n_left_to_next >= 4)
305  {
306  u32 bi0, bi1, bi2, bi3;
307  vlib_buffer_t *b0, *b1, *b2, *b3;
308  u32 next0, next1, next2, next3;
309  u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
310 
311  /* Prefetch next iteration. */
312  {
313  vlib_buffer_t *p4, *p5, *p6, *p7;
314 
315  p4 = vlib_get_buffer (vm, from[4]);
316  p5 = vlib_get_buffer (vm, from[5]);
317  p6 = vlib_get_buffer (vm, from[6]);
318  p7 = vlib_get_buffer (vm, from[7]);
319 
320  /* Prefetch the buffer header and packet for the N+2 loop iteration */
321  vlib_prefetch_buffer_header (p4, LOAD);
322  vlib_prefetch_buffer_header (p5, LOAD);
323  vlib_prefetch_buffer_header (p6, LOAD);
324  vlib_prefetch_buffer_header (p7, LOAD);
325 
330 
331  /*
332  * Don't bother prefetching the bridge-domain config (which
333  * depends on the input config above). Only a small number of
334  * bridge domains are expected. Plus the structure is small
335  * and several fit in a cache line.
336  */
337  }
338 
339  /* speculatively enqueue b0 and b1 to the current next frame */
340  /* bi is "buffer index", b is pointer to the buffer */
341  to_next[0] = bi0 = from[0];
342  to_next[1] = bi1 = from[1];
343  to_next[2] = bi2 = from[2];
344  to_next[3] = bi3 = from[3];
345  from += 4;
346  to_next += 4;
347  n_left_from -= 4;
348  n_left_to_next -= 4;
349 
350  b0 = vlib_get_buffer (vm, bi0);
351  b1 = vlib_get_buffer (vm, bi1);
352  b2 = vlib_get_buffer (vm, bi2);
353  b3 = vlib_get_buffer (vm, bi3);
354 
355  if (do_trace)
356  {
357  /* RX interface handles */
358  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
359  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
360  sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_RX];
361  sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_RX];
362 
363  if (b0->flags & VLIB_BUFFER_IS_TRACED)
364  {
366  l2input_trace_t *t =
367  vlib_add_trace (vm, node, b0, sizeof (*t));
368  t->sw_if_index = sw_if_index0;
369  clib_memcpy_fast (t->src, h0->src_address, 6);
370  clib_memcpy_fast (t->dst, h0->dst_address, 6);
371  }
372  if (b1->flags & VLIB_BUFFER_IS_TRACED)
373  {
375  l2input_trace_t *t =
376  vlib_add_trace (vm, node, b1, sizeof (*t));
377  t->sw_if_index = sw_if_index1;
378  clib_memcpy_fast (t->src, h1->src_address, 6);
379  clib_memcpy_fast (t->dst, h1->dst_address, 6);
380  }
381  if (b2->flags & VLIB_BUFFER_IS_TRACED)
382  {
384  l2input_trace_t *t =
385  vlib_add_trace (vm, node, b2, sizeof (*t));
386  t->sw_if_index = sw_if_index2;
387  clib_memcpy_fast (t->src, h2->src_address, 6);
388  clib_memcpy_fast (t->dst, h2->dst_address, 6);
389  }
390  if (b3->flags & VLIB_BUFFER_IS_TRACED)
391  {
393  l2input_trace_t *t =
394  vlib_add_trace (vm, node, b3, sizeof (*t));
395  t->sw_if_index = sw_if_index3;
396  clib_memcpy_fast (t->src, h3->src_address, 6);
397  clib_memcpy_fast (t->dst, h3->dst_address, 6);
398  }
399  }
400 
401  classify_and_dispatch (msm, b0, &next0);
402  classify_and_dispatch (msm, b1, &next1);
403  classify_and_dispatch (msm, b2, &next2);
404  classify_and_dispatch (msm, b3, &next3);
405 
406  /* verify speculative enqueues, maybe switch current next frame */
407  /* if next0==next1==next_index then nothing special needs to be done */
408  vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
409  to_next, n_left_to_next,
410  bi0, bi1, bi2, bi3,
411  next0, next1, next2, next3);
412  }
413 
414  while (n_left_from > 0 && n_left_to_next > 0)
415  {
416  u32 bi0;
417  vlib_buffer_t *b0;
418  u32 next0;
419  u32 sw_if_index0;
420 
421  /* speculatively enqueue b0 to the current next frame */
422  bi0 = from[0];
423  to_next[0] = bi0;
424  from += 1;
425  to_next += 1;
426  n_left_from -= 1;
427  n_left_to_next -= 1;
428 
429  b0 = vlib_get_buffer (vm, bi0);
430 
431  if (do_trace && PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
432  {
434  l2input_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
435  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
436  t->sw_if_index = sw_if_index0;
437  clib_memcpy_fast (t->src, h0->src_address, 6);
438  clib_memcpy_fast (t->dst, h0->dst_address, 6);
439  }
440 
441  classify_and_dispatch (msm, b0, &next0);
442 
443  /* verify speculative enqueue, maybe switch current next frame */
444  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
445  to_next, n_left_to_next,
446  bi0, next0);
447  }
448 
449  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
450  }
451 
453  L2INPUT_ERROR_L2INPUT, frame->n_vectors);
454 
455  return frame->n_vectors;
456 }
457 
458 static uword
460  vlib_node_runtime_t * node, vlib_frame_t * frame)
461 {
462  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
463  return l2input_node_inline (vm, node, frame, 1 /* do_trace */ );
464  return l2input_node_inline (vm, node, frame, 0 /* do_trace */ );
465 }
466 
467 /* *INDENT-OFF* */
469  .function = l2input_node_fn,
470  .name = "l2-input",
471  .vector_size = sizeof (u32),
472  .format_trace = format_l2input_trace,
473  .format_buffer = format_ethernet_header_with_length,
474  .type = VLIB_NODE_TYPE_INTERNAL,
475 
476  .n_errors = ARRAY_LEN(l2input_error_strings),
477  .error_strings = l2input_error_strings,
478 
479  .n_next_nodes = L2INPUT_N_NEXT,
480 
481  /* edit / add dispositions here */
482  .next_nodes = {
483  [L2INPUT_NEXT_LEARN] = "l2-learn",
484  [L2INPUT_NEXT_FWD] = "l2-fwd",
485  [L2INPUT_NEXT_DROP] = "error-drop",
486  },
487 };
488 /* *INDENT-ON* */
489 
492 {
494 
495  mp->vlib_main = vm;
496  mp->vnet_main = vnet_get_main ();
497 
498  /* Get packets RX'd from L2 interfaces */
500 
501  /* Create the config vector */
502  vec_validate (mp->configs, 100);
503  /* create 100 sw interface entries and zero them */
504 
505  /* Initialize the feature next-node indexes */
507  l2input_node.index,
511 
512  return 0;
513 }
514 
516 
517 
518 /** Get a pointer to the config for the given interface. */
521 {
523 
524  vec_validate (mp->configs, sw_if_index);
525  return vec_elt_at_index (mp->configs, sw_if_index);
526 }
527 
528 /** Enable (or disable) the feature in the bitmap for the given interface. */
529 u32
531  l2input_feat_masks_t feature_bitmap, u32 enable)
532 {
533  l2_input_config_t *config = l2input_intf_config (sw_if_index);
534 
535  if (enable)
536  config->feature_bitmap |= feature_bitmap;
537  else
538  config->feature_bitmap &= ~feature_bitmap;
539 
540  return config->feature_bitmap;
541 }
542 
543 u32
544 l2input_set_bridge_features (u32 bd_index, u32 feat_mask, u32 feat_value)
545 {
546  l2_bridge_domain_t *bd_config = l2input_bd_config (bd_index);;
547  bd_validate (bd_config);
548  bd_config->feature_bitmap =
549  (bd_config->feature_bitmap & ~feat_mask) | feat_value;
550  return bd_config->feature_bitmap;
551 }
552 
553 void
555  const u8 * old_address, const u8 * new_address)
556 {
557  /* check if the sw_if_index passed is a BVI in a BD */
558  l2_input_config_t *intf_config;
559 
560  intf_config = l2input_intf_config (sw_if_index);
561 
562  if (intf_config->bridge && intf_config->bvi)
563  {
564  /* delete and re-add l2fib entry for the bvi interface */
565  l2fib_del_entry (old_address, intf_config->bd_index, sw_if_index);
566  l2fib_add_entry (new_address,
567  intf_config->bd_index,
568  sw_if_index,
569  L2FIB_ENTRY_RESULT_FLAG_BVI |
570  L2FIB_ENTRY_RESULT_FLAG_STATIC);
571  }
572 }
573 
574 /**
575  * Set the subinterface to run in l2 or l3 mode.
576  * For L3 mode, just the sw_if_index is specified.
577  * For bridged mode, the bd id and bvi flag are also specified.
578  * For xconnect mode, the peer sw_if_index is also specified.
579  * Return 0 if ok, or non-0 if there was an error.
580  */
581 
582 u32
584  u32 mode, /* One of L2 modes or back to L3 mode */
585  u32 sw_if_index, /* sw interface index */
586  u32 bd_index, /* for bridged interface */
587  l2_bd_port_type_t port_type, /* port_type */
588  u32 shg, /* the bridged interface split horizon group */
589  u32 xc_sw_if_index) /* peer interface for xconnect */
590 {
593  vnet_main_t *vnm = vnet_get_main ();
595  l2_output_config_t *out_config;
596  l2_input_config_t *config;
597  l2_bridge_domain_t *bd_config;
598  i32 l2_if_adjust = 0;
599  vnet_device_class_t *dev_class;
600 
601  hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
602  config = l2input_intf_config (sw_if_index);
603 
604  if (config->bridge)
605  {
606  /* Interface is already in bridge mode. Undo the existing config. */
607  bd_config = vec_elt_at_index (mp->bd_configs, config->bd_index);
608 
609  /* remove interface from flood vector */
610  bd_remove_member (bd_config, sw_if_index);
611 
612  /* undo any BVI-related config */
613  if (bd_config->bvi_sw_if_index == sw_if_index)
614  {
616 
617  bd_config->bvi_sw_if_index = ~0;
618  config->bvi = 0;
619 
620  /* delete the l2fib entry for the bvi interface */
621  l2fib_del_entry (hi->hw_address, config->bd_index, sw_if_index);
622 
623  /* since this is a no longer BVI interface do not to flood to it */
624  si = vnet_get_sw_interface (vnm, sw_if_index);
626  }
627  if (bd_config->uu_fwd_sw_if_index == sw_if_index)
628  {
629  bd_config->uu_fwd_sw_if_index = ~0;
630  bd_config->feature_bitmap &= ~L2INPUT_FEAT_UU_FWD;
631  }
632 
633  /* Clear MACs learned on the interface */
634  if ((config->feature_bitmap & L2INPUT_FEAT_LEARN) ||
635  (bd_config->feature_bitmap & L2INPUT_FEAT_LEARN))
636  l2fib_flush_int_mac (vm, sw_if_index);
637 
638  l2_if_adjust--;
639  }
640  else if (config->xconnect)
641  {
642  l2_if_adjust--;
643  }
644 
645  /* Make sure vector is big enough */
648 
649  /* Initialize the l2-input configuration for the interface */
650  if (mode == MODE_L3)
651  {
652  /* Set L2 config to BD index 0 so that if any packet accidentally
653  * came in on L2 path, it will be dropped in BD 0 */
654  config->xconnect = 0;
655  config->bridge = 0;
656  config->shg = 0;
657  config->bd_index = 0;
658  config->feature_bitmap = L2INPUT_FEAT_DROP;
659 
660  /* Clear L2 output config */
661  out_config = l2output_intf_config (sw_if_index);
662  clib_memset (out_config, 0, sizeof (l2_output_config_t));
663 
664  /* Make sure any L2-output packet to this interface now in L3 mode is
665  * dropped. This may happen if L2 FIB MAC entry is stale */
667  }
668  else
669  {
670  /* Add or update l2-output node next-arc and output_node_index_vec table
671  * for the interface */
672  l2output_create_output_node_mapping (vm, vnet_main, sw_if_index);
673 
674  if (mode == MODE_L2_BRIDGE)
675  {
676  u8 member_flags;
677 
678  /*
679  * Remove a check that the interface must be an Ethernet.
680  * Specifically so we can bridge to L3 tunnel interfaces.
681  * Here's the check:
682  * if (hi->hw_class_index != ethernet_hw_interface_class.index)
683  *
684  */
685  if (!hi)
686  return MODE_ERROR_ETH; /* non-ethernet */
687 
688  config->xconnect = 0;
689  config->bridge = 1;
690  config->bd_index = bd_index;
691  *l2fib_valid_swif_seq_num (sw_if_index) += 1;
692 
693  /*
694  * Enable forwarding, flooding, learning and ARP termination by default
695  * (note that ARP term is disabled on BD feature bitmap by default)
696  */
697  config->feature_bitmap |= (L2INPUT_FEAT_FWD |
698  L2INPUT_FEAT_UU_FLOOD |
699  L2INPUT_FEAT_UU_FWD |
700  L2INPUT_FEAT_FLOOD |
701  L2INPUT_FEAT_LEARN |
702  L2INPUT_FEAT_ARP_TERM);
703 
704  /* Make sure last-chance drop is configured */
705  config->feature_bitmap |= L2INPUT_FEAT_DROP;
706 
707  /* Make sure xconnect is disabled */
708  config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT;
709 
710  /* Set up bridge domain */
711  bd_config = l2input_bd_config (bd_index);
712  bd_validate (bd_config);
713 
714  /* TODO: think: add l2fib entry even for non-bvi interface? */
715 
716  /* Do BVI interface initializations */
717  if (L2_BD_PORT_TYPE_BVI == port_type)
718  {
720 
721  /* ensure BD has no bvi interface (or replace that one with this??) */
722  if (bd_config->bvi_sw_if_index != ~0)
723  {
724  return MODE_ERROR_BVI_DEF; /* bd already has a bvi interface */
725  }
726  bd_config->bvi_sw_if_index = sw_if_index;
727  config->bvi = 1;
728 
729  /* create the l2fib entry for the bvi interface */
730  l2fib_add_entry (hi->hw_address, bd_index, sw_if_index,
731  L2FIB_ENTRY_RESULT_FLAG_BVI |
732  L2FIB_ENTRY_RESULT_FLAG_STATIC);
733 
734  /* Disable learning by default. no use since l2fib entry is static. */
735  config->feature_bitmap &= ~L2INPUT_FEAT_LEARN;
736 
737  /* since this is a BVI interface we want to flood to it */
738  si = vnet_get_sw_interface (vnm, sw_if_index);
740  member_flags = L2_FLOOD_MEMBER_BVI;
741  }
742  else if (L2_BD_PORT_TYPE_UU_FWD == port_type)
743  {
744  bd_config->uu_fwd_sw_if_index = sw_if_index;
745  bd_config->feature_bitmap |= L2INPUT_FEAT_UU_FWD;
746  }
747  else
748  {
749  member_flags = L2_FLOOD_MEMBER_NORMAL;
750  }
751 
752  if (L2_BD_PORT_TYPE_NORMAL == port_type ||
753  L2_BD_PORT_TYPE_BVI == port_type)
754  {
755  /* Add interface to bridge-domain flood vector */
756  l2_flood_member_t member = {
758  .flags = member_flags,
759  .shg = shg,
760  };
761  bd_add_member (bd_config, &member);
762  }
763  }
764  else if (mode == MODE_L2_XC)
765  {
766  config->xconnect = 1;
767  config->bridge = 0;
768  config->output_sw_if_index = xc_sw_if_index;
769 
770  /* Make sure last-chance drop is configured */
771  config->feature_bitmap |= L2INPUT_FEAT_DROP;
772 
773  /* Make sure bridging features are disabled */
774  config->feature_bitmap &=
775  ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
776 
777  config->feature_bitmap |= L2INPUT_FEAT_XCONNECT;
778  shg = 0; /* not used in xconnect */
779  }
780  else if (mode == MODE_L2_CLASSIFY)
781  {
782  config->xconnect = 1;
783  config->bridge = 0;
784  config->output_sw_if_index = xc_sw_if_index;
785 
786  /* Make sure last-chance drop is configured */
787  config->feature_bitmap |=
788  L2INPUT_FEAT_DROP | L2INPUT_FEAT_INPUT_CLASSIFY;
789 
790  /* Make sure bridging features are disabled */
791  config->feature_bitmap &=
792  ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
793  shg = 0; /* not used in xconnect */
794 
795  /* Insure all packets go to ethernet-input */
796  ethernet_set_rx_redirect (vnet_main, hi, 1);
797  }
798 
799  /* set up split-horizon group and set output feature bit */
800  config->shg = shg;
801  out_config = l2output_intf_config (sw_if_index);
802  out_config->shg = shg;
803  out_config->feature_bitmap |= L2OUTPUT_FEAT_OUTPUT;
804 
805  /*
806  * Test: remove this when non-IP features can be configured.
807  * Enable a non-IP feature to test IP feature masking
808  * config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT;
809  */
810 
811  l2_if_adjust++;
812  }
813 
814  /* Adjust count of L2 interfaces */
815  hi->l2_if_count += l2_if_adjust;
816 
818  {
819  if ((hi->l2_if_count == 1) && (l2_if_adjust == 1))
820  {
821  /* Just added first L2 interface on this port */
822 
823  /* Set promiscuous mode on the l2 interface */
824  ethernet_set_flags (vnet_main, hi->hw_if_index,
826 
827  /* ensure all packets go to ethernet-input */
828  ethernet_set_rx_redirect (vnet_main, hi, 1);
829 
830  }
831  else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1))
832  {
833  /* Just removed only L2 subinterface on this port */
834 
835  /* Disable promiscuous mode on the l2 interface */
836  ethernet_set_flags (vnet_main, hi->hw_if_index, 0);
837 
838  /* Allow ip packets to go directly to ip4-input etc */
839  ethernet_set_rx_redirect (vnet_main, hi, 0);
840  }
841  }
842 
843  /* Set up the L2/L3 flag in the interface parsing tables */
844  ethernet_sw_interface_set_l2_mode (vnm, sw_if_index, (mode != MODE_L3));
845 
846  dev_class = vnet_get_device_class (vnet_main, hi->dev_class_index);
847  if (dev_class->set_l2_mode_function)
848  {
849  dev_class->set_l2_mode_function (vnet_main, hi, l2_if_adjust);
850  }
851 
852  return 0;
853 }
854 
855 /**
856  * Set subinterface in bridging mode with a bridge-domain ID.
857  * The CLI format is:
858  * set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group]
859  */
860 static clib_error_t *
862  unformat_input_t * input, vlib_cli_command_t * cmd)
863 {
864  vnet_main_t *vnm = vnet_get_main ();
865  l2_bd_port_type_t port_type;
866  clib_error_t *error = 0;
867  u32 bd_index, bd_id;
869  u32 rc;
870  u32 shg;
871 
872  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
873  {
874  error = clib_error_return (0, "unknown interface `%U'",
875  format_unformat_error, input);
876  goto done;
877  }
878 
879  if (!unformat (input, "%d", &bd_id))
880  {
881  error = clib_error_return (0, "expected bridge domain ID `%U'",
882  format_unformat_error, input);
883  goto done;
884  }
885 
886  if (bd_id > L2_BD_ID_MAX)
887  {
888  error = clib_error_return (0, "bridge domain ID exceed 16M limit",
889  format_unformat_error, input);
890  goto done;
891  }
892  bd_index = bd_find_or_add_bd_index (&bd_main, bd_id);
893 
894  /* optional bvi */
895  port_type = L2_BD_PORT_TYPE_NORMAL;
896  if (unformat (input, "bvi"))
897  port_type = L2_BD_PORT_TYPE_BVI;
898  if (unformat (input, "uu-fwd"))
899  port_type = L2_BD_PORT_TYPE_UU_FWD;
900 
901  /* optional split horizon group */
902  shg = 0;
903  (void) unformat (input, "%d", &shg);
904 
905  /* set the interface mode */
906  if ((rc =
907  set_int_l2_mode (vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index,
908  port_type, shg, 0)))
909  {
910  if (rc == MODE_ERROR_ETH)
911  {
912  error = clib_error_return (0, "bridged interface must be ethernet",
913  format_unformat_error, input);
914  }
915  else if (rc == MODE_ERROR_BVI_DEF)
916  {
917  error =
918  clib_error_return (0, "bridge-domain already has a bvi interface",
919  format_unformat_error, input);
920  }
921  else
922  {
923  error = clib_error_return (0, "invalid configuration for interface",
924  format_unformat_error, input);
925  }
926  goto done;
927  }
928 
929 done:
930  return error;
931 }
932 
933 /*?
934  * Use this command put an interface into Layer 2 bridge domain. If a
935  * bridge-domain with the provided bridge-domain-id does not exist, it
936  * will be created. Interfaces in a bridge-domain forward packets to
937  * other interfaces in the same bridge-domain based on destination mac
938  * address. To remove an interface from a the Layer 2 bridge domain,
939  * put the interface in a different mode, for example Layer 3 mode.
940  *
941  * Optionally, an interface can be added to a Layer 2 bridge-domain as
942  * a Bridged Virtual Interface (bvi). Only one interface in a Layer 2
943  * bridge-domain can be a bvi.
944  *
945  * Optionally, a split-horizon group can also be specified. This defaults
946  * to 0 if not specified.
947  *
948  * @cliexpar
949  * Example of how to configure a Layer 2 bridge-domain with three
950  * interfaces (where 200 is the bridge-domain-id):
951  * @cliexcmd{set interface l2 bridge GigabitEthernet0/8/0.200 200}
952  * This interface is added a BVI interface:
953  * @cliexcmd{set interface l2 bridge GigabitEthernet0/9/0.200 200 bvi}
954  * This interface also has a split-horizon group of 1 specified:
955  * @cliexcmd{set interface l2 bridge GigabitEthernet0/a/0.200 200 1}
956  * Example of how to remove an interface from a Layer2 bridge-domain:
957  * @cliexcmd{set interface l3 GigabitEthernet0/a/0.200}
958 ?*/
959 /* *INDENT-OFF* */
960 VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = {
961  .path = "set interface l2 bridge",
962  .short_help = "set interface l2 bridge <interface> <bridge-domain-id> [bvi|uu-fwd] [shg]",
963  .function = int_l2_bridge,
964 };
965 /* *INDENT-ON* */
966 
967 /**
968  * Set subinterface in xconnect mode with another interface.
969  * The CLI format is:
970  * set interface l2 xconnect <interface> <peer interface>
971  */
972 static clib_error_t *
974  unformat_input_t * input, vlib_cli_command_t * cmd)
975 {
976  vnet_main_t *vnm = vnet_get_main ();
977  clib_error_t *error = 0;
979  u32 xc_sw_if_index;
980 
981  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
982  {
983  error = clib_error_return (0, "unknown interface `%U'",
984  format_unformat_error, input);
985  goto done;
986  }
987 
988  if (!unformat_user
989  (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index))
990  {
991  error = clib_error_return (0, "unknown peer interface `%U'",
992  format_unformat_error, input);
993  goto done;
994  }
995 
996  /* set the interface mode */
997  if (set_int_l2_mode
998  (vm, vnm, MODE_L2_XC, sw_if_index, 0, L2_BD_PORT_TYPE_NORMAL,
999  0, xc_sw_if_index))
1000  {
1001  error = clib_error_return (0, "invalid configuration for interface",
1002  format_unformat_error, input);
1003  goto done;
1004  }
1005 
1006 done:
1007  return error;
1008 }
1009 
1010 /*?
1011  * Use this command put an interface into Layer 2 cross-connect mode.
1012  * Both interfaces must be in this mode for bi-directional traffic. All
1013  * packets received on one interface will be transmitted to the other.
1014  * To remove the Layer 2 cross-connect, put the interface in a different
1015  * mode, for example Layer 3 mode.
1016  *
1017  * @cliexpar
1018  * Example of how to configure a Layer2 cross-connect between two interfaces:
1019  * @cliexcmd{set interface l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300}
1020  * @cliexcmd{set interface l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300}
1021  * Example of how to remove a Layer2 cross-connect:
1022  * @cliexcmd{set interface l3 GigabitEthernet0/8/0.300}
1023  * @cliexcmd{set interface l3 GigabitEthernet0/9/0.300}
1024 ?*/
1025 /* *INDENT-OFF* */
1026 VLIB_CLI_COMMAND (int_l2_xc_cli, static) = {
1027  .path = "set interface l2 xconnect",
1028  .short_help = "set interface l2 xconnect <interface> <peer interface>",
1029  .function = int_l2_xc,
1030 };
1031 /* *INDENT-ON* */
1032 
1033 /**
1034  * Set subinterface in L3 mode.
1035  * The CLI format is:
1036  * set interface l3 <interface>
1037  */
1038 static clib_error_t *
1040 {
1041  vnet_main_t *vnm = vnet_get_main ();
1042  clib_error_t *error = 0;
1043  u32 sw_if_index;
1044 
1045  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
1046  {
1047  error = clib_error_return (0, "unknown interface `%U'",
1048  format_unformat_error, input);
1049  goto done;
1050  }
1051 
1052  /* set the interface mode */
1053  if (set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0,
1054  L2_BD_PORT_TYPE_NORMAL, 0, 0))
1055  {
1056  error = clib_error_return (0, "invalid configuration for interface",
1057  format_unformat_error, input);
1058  goto done;
1059  }
1060 
1061 done:
1062  return error;
1063 }
1064 
1065 /*?
1066  * Modify the packet processing mode of the interface to Layer 3, which
1067  * implies packets will be routed. This is the default mode of an interface.
1068  * Use this command to remove an interface from a Layer 2 cross-connect or a
1069  * Layer 2 bridge.
1070  *
1071  * @cliexpar
1072  * Example of how to set the mode of an interface to Layer 3:
1073  * @cliexcmd{set interface l3 GigabitEthernet0/8/0.200}
1074 ?*/
1075 /* *INDENT-OFF* */
1076  VLIB_CLI_COMMAND (int_l3_cli, static) = {
1077  .path = "set interface l3",
1078  .short_help = "set interface l3 <interface>",
1079  .function = int_l3,
1080 };
1081 /* *INDENT-ON* */
1082 
1083 /**
1084  * Show interface mode.
1085  * The CLI format is:
1086  * show mode [<if-name1> <if-name2> ...]
1087  */
1088 static clib_error_t *
1090  unformat_input_t * input, vlib_cli_command_t * cmd)
1091 {
1092  vnet_main_t *vnm = vnet_get_main ();
1093  clib_error_t *error = 0;
1094  char *mode;
1095  u8 *args;
1097 
1098  vnet_sw_interface_t *si, *sis = 0;
1099  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1100  {
1101  u32 sw_if_index;
1102 
1103  /* See if user wants to show specific interface */
1104  if (unformat
1105  (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
1106  {
1107  si = pool_elt_at_index (im->sw_interfaces, sw_if_index);
1108  vec_add1 (sis, si[0]);
1109  }
1110  else
1111  {
1112  error = clib_error_return (0, "unknown input `%U'",
1113  format_unformat_error, input);
1114  goto done;
1115  }
1116  }
1117 
1118  if (vec_len (sis) == 0) /* Get all interfaces */
1119  {
1120  /* Gather interfaces. */
1122  _vec_len (sis) = 0;
1123  /* *INDENT-OFF* */
1124  pool_foreach (si, im->sw_interfaces, ({ vec_add1 (sis, si[0]); }));
1125  /* *INDENT-ON* */
1126  }
1127 
1128  vec_foreach (si, sis)
1129  {
1131  if (config->bridge)
1132  {
1133  u32 bd_id;
1134  mode = "l2 bridge";
1135  bd_id = l2input_main.bd_configs[config->bd_index].bd_id;
1136 
1137  args = format (0, "bd_id %d%s%d", bd_id,
1138  config->bvi ? " bvi shg " : " shg ", config->shg);
1139  }
1140  else if (config->xconnect)
1141  {
1142  mode = "l2 xconnect";
1143  args = format (0, "%U",
1145  vnm, config->output_sw_if_index);
1146  }
1147  else
1148  {
1149  mode = "l3";
1150  args = format (0, " ");
1151  }
1152  vlib_cli_output (vm, "%s %U %v\n",
1153  mode,
1155  vnm, si->sw_if_index, args);
1156  vec_free (args);
1157  }
1158 
1159 done:
1160  vec_free (sis);
1161 
1162  return error;
1163 }
1164 
1165 /*?
1166  * Show the packet processing mode (Layer2 cross-connect, Layer 2 bridge,
1167  * Layer 3 routed) of all interfaces and sub-interfaces, or limit the
1168  * output to just the provided list of interfaces and sub-interfaces.
1169  * The output shows the mode, the interface, and if the interface is
1170  * a member of a bridge, the bridge-domain-id and the split horizon group (shg).
1171  *
1172  * @cliexpar
1173  * Example of displaying the mode of all interfaces:
1174  * @cliexstart{show mode}
1175  * l3 local0
1176  * l3 GigabitEthernet0/8/0
1177  * l3 GigabitEthernet0/9/0
1178  * l3 GigabitEthernet0/a/0
1179  * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
1180  * l2 bridge GigabitEthernet0/9/0.200 bd_id 200 shg 0
1181  * l2 bridge GigabitEthernet0/a/0.200 bd_id 200 shg 0
1182  * l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300
1183  * l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300
1184  * @cliexend
1185  * Example of displaying the mode of a selected list of interfaces:
1186  * @cliexstart{show mode GigabitEthernet0/8/0 GigabitEthernet0/8/0.200}
1187  * l3 GigabitEthernet0/8/0
1188  * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
1189  * @cliexend
1190 ?*/
1191 /* *INDENT-OFF* */
1192 VLIB_CLI_COMMAND (show_l2_mode, static) = {
1193  .path = "show mode",
1194  .short_help = "show mode [<if-name1> <if-name2> ...]",
1195  .function = show_int_mode,
1196 };
1197 /* *INDENT-ON* */
1198 
1199 #define foreach_l2_init_function \
1200 _(feat_bitmap_drop_init) \
1201 _(l2fib_init) \
1202 _(l2_input_classify_init) \
1203 _(l2bd_init) \
1204 _(l2fwd_init) \
1205 _(l2_in_out_acl_init) \
1206 _(l2input_init) \
1207 _(l2_vtr_init) \
1208 _(l2_invtr_init) \
1209 _(l2_efp_filter_init) \
1210 _(l2learn_init) \
1211 _(l2flood_init) \
1212 _(l2output_init) \
1213 _(l2_patch_init) \
1214 _(l2_xcrw_init)
1215 
1216 clib_error_t *
1218 {
1219  clib_error_t *error;
1220 
1221 #define _(a) do { \
1222  if ((error = vlib_call_init_function (vm, a))) return error; } \
1223 while (0);
1225 #undef _
1226  return 0;
1227 }
1228 
1230 
1231 /*
1232  * fd.io coding-style-patch-verification: ON
1233  *
1234  * Local Variables:
1235  * eval: (c-set-style "gnu")
1236  * End:
1237  */
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
u8 * format_l2_input_features(u8 *s, va_list *args)
Definition: l2_input.c:66
static char * l2input_feat_names[]
Definition: l2_input.c:53
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:1039
l2_input_config_t * configs
Definition: l2_input.h:61
vl_api_address_t src
Definition: vxlan_gbp.api:32
#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:544
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:285
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:520
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
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:525
vlib_node_registration_t l2input_node
(constructor) VLIB_REGISTER_NODE (l2input_node)
Definition: l2_input.c:468
#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:419
unformat_function_t unformat_vnet_sw_interface
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:861
format_function_t format_vnet_sw_if_index_name
unsigned char u8
Definition: types.h:56
l2input_error_t
Definition: l2_input.c:128
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:731
#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:490
#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
u32 sw_if_index
Definition: vxlan_gbp.api:37
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:188
#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:400
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:1916
#define foreach_l2input_error
Definition: l2_input.c:124
#define VLIB_NODE_FUNCTION_MULTIARCH(node, fn)
Definition: node.h:223
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:511
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:260
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:214
enum l2_bd_port_type_t_ l2_bd_port_type_t
#define PREDICT_FALSE(x)
Definition: clib.h:111
vnet_main_t vnet_main
Definition: misc.c:43
l2output_main_t l2output_main
Definition: l2_output.c:78
u32 feat_next_node_index[32]
Definition: l2_input.h: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:973
#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:1199
#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:684
u16 n_vectors
Definition: node.h:420
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:79
vlib_main_t * vm
Definition: buffer.c:301
vl_api_address_t dst
Definition: vxlan_gbp.api:33
#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:2067
#define ETHERNET_INTERFACE_FLAG_ACCEPT_ALL
Definition: ethernet.h:174
#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:459
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:60
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:405
#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:538
#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:1089
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:583
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:530
static_always_inline void classify_and_dispatch(l2input_main_t *msm, vlib_buffer_t *b0, u32 *next0)
Definition: l2_input.c:152
#define MODE_L2_XC
Definition: l2_input.h:212
clib_error_t * l2_init(vlib_main_t *vm)
Definition: l2_input.c:1217
static uword l2input_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: l2_input.c:459
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:109
clib_error_t * l2input_init(vlib_main_t *vm)
Definition: l2_input.c:491
Definition: defs.h:47
l2input_main_t l2input_main
Definition: l2_input.c:122
void ethernet_sw_interface_set_l2_mode(vnet_main_t *vnm, u32 sw_if_index, u32 l2)
Definition: node.c:1727
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:136
void l2input_interface_mac_change(u32 sw_if_index, const u8 *old_address, const u8 *new_address)
Definition: l2_input.c:554
u64 uword
Definition: types.h:112
vnet_sw_interface_t * sw_interfaces
Definition: interface.h:830
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:368
#define MODE_ERROR_BVI_DEF
Definition: l2_input.h:216
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
vl_api_gbp_vxlan_tunnel_mode_t mode
Definition: gbp.api:349
u8 data[0]
Packet data.
Definition: buffer.h:176
#define MODE_L2_CLASSIFY
Definition: l2_input.h:213
#define vec_foreach(var, vec)
Vector iterator.
#define get_u16(addr)
u16 flags
Copy of main node flags.
Definition: node.h:532
u32 sw_if_index
Definition: l2_bd.h:55
l2input_next_t
Definition: l2_input.c:142
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:326
#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:488
bd_main_t bd_main
Definition: l2_bd.c:44
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
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:117
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:725
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:804
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:62
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
Definition: defs.h:46
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:371
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128