FD.io VPP  v18.07-34-g55fbdb9
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 
75  if (feature_bitmap == 0)
76  {
77  s = format (s, " none configured");
78  return s;
79  }
80 
81  feature_bitmap &= ~L2INPUT_FEAT_DROP; /* Not a feature */
82  int i;
83  for (i = L2INPUT_N_FEAT; i >= 0; i--)
84  if (feature_bitmap & (1 << i))
85  s = format (s, "%10s (%s)\n", display_names[i], l2input_feat_names[i]);
86  return s;
87 }
88 
89 typedef struct
90 {
91  /* per-pkt trace data */
92  u8 src[6];
93  u8 dst[6];
97 
98 /* packet trace format function */
99 static u8 *
100 format_l2input_trace (u8 * s, va_list * args)
101 {
102  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
103  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
104  l2input_trace_t *t = va_arg (*args, l2input_trace_t *);
105 
106  s = format (s, "l2-input: sw_if_index %d dst %U src %U",
107  t->sw_if_index,
110  return s;
111 }
112 
114 
115 #define foreach_l2input_error \
116 _(L2INPUT, "L2 input packets") \
117 _(DROP, "L2 input drops")
118 
119 typedef enum
120 {
121 #define _(sym,str) L2INPUT_ERROR_##sym,
123 #undef _
126 
127 static char *l2input_error_strings[] = {
128 #define _(sym,string) string,
130 #undef _
131 };
132 
133 typedef enum
134 { /* */
140 
141 
144 {
145  /*
146  * Load L2 input feature struct
147  * Load bridge domain struct
148  * Parse ethernet header to determine unicast/mcast/broadcast
149  * take L2 input stat
150  * classify packet as IP/UDP/TCP, control, other
151  * mask feature bitmap
152  * go to first node in bitmap
153  * Later: optimize VTM
154  *
155  * For L2XC,
156  * set tx sw-if-handle
157  */
158 
159  u32 feat_mask = ~0;
160  u32 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
162 
163  /* Get config for the input interface */
164  l2_input_config_t *config = vec_elt_at_index (msm->configs, sw_if_index0);
165 
166  /* Save split horizon group */
167  vnet_buffer (b0)->l2.shg = config->shg;
168 
169  /* determine layer2 kind for stat and mask */
171  {
172  u8 *l3h0 = (u8 *) h0 + vnet_buffer (b0)->l2.l2_len;
173 
174 #define get_u16(addr) ( *((u16 *)(addr)) )
175  u16 ethertype = clib_net_to_host_u16 (get_u16 (l3h0 - 2));
176  u8 protocol = ((ip6_header_t *) l3h0)->protocol;
177 
178  /* Disable bridge forwarding (flooding will execute instead if not xconnect) */
179  feat_mask &= ~(L2INPUT_FEAT_FWD |
180  L2INPUT_FEAT_UU_FLOOD | L2INPUT_FEAT_GBP_FWD);
181 
182  /* Disable ARP-term for non-ARP and non-ICMP6 packet */
183  if (ethertype != ETHERNET_TYPE_ARP &&
184  (ethertype != ETHERNET_TYPE_IP6 || protocol != IP_PROTOCOL_ICMP6))
185  feat_mask &= ~(L2INPUT_FEAT_ARP_TERM);
186 
187  /*
188  * For packet from BVI - set SHG of ARP request or ICMPv6 neighbor
189  * solicitation packet from BVI to 0 so it can also flood to VXLAN
190  * tunnels or other ports with the same SHG as that of the BVI.
191  */
192  else if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] ==
193  L2INPUT_BVI))
194  {
195  if (ethertype == ETHERNET_TYPE_ARP)
196  {
198  if (arp0->opcode ==
199  clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_request))
200  vnet_buffer (b0)->l2.shg = 0;
201  }
202  else /* must be ICMPv6 */
203  {
204  ip6_header_t *iph0 = (ip6_header_t *) l3h0;
205  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh0;
206  ndh0 = ip6_next_header (iph0);
207  if (ndh0->icmp.type == ICMP6_neighbor_solicitation)
208  vnet_buffer (b0)->l2.shg = 0;
209  }
210  }
211  }
212  else
213  {
214  /*
215  * For packet from BVI - set SHG of unicast packet from BVI to 0 so it
216  * is not dropped on output to VXLAN tunnels or other ports with the
217  * same SHG as that of the BVI.
218  */
219  if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] ==
220  L2INPUT_BVI))
221  vnet_buffer (b0)->l2.shg = 0;
222  }
223 
224 
225  if (config->bridge)
226  {
227  /* Do bridge-domain processing */
228  u16 bd_index0 = config->bd_index;
229  /* save BD ID for next feature graph nodes */
230  vnet_buffer (b0)->l2.bd_index = bd_index0;
231 
232  /* Get config for the bridge domain interface */
233  l2_bridge_domain_t *bd_config =
234  vec_elt_at_index (msm->bd_configs, bd_index0);
235 
236  /* Save bridge domain and interface seq_num */
237  /* *INDENT-OFF* */
238  l2fib_seq_num_t sn = {
239  .swif = *l2fib_swif_seq_num(sw_if_index0),
240  .bd = bd_config->seq_num,
241  };
242  /* *INDENT-ON* */
243  vnet_buffer (b0)->l2.l2fib_sn = sn.as_u16;;
244  vnet_buffer (b0)->l2.bd_age = bd_config->mac_age;
245 
246  /*
247  * Process bridge domain feature enables.
248  * To perform learning/flooding/forwarding, the corresponding bit
249  * must be enabled in both the input interface config and in the
250  * bridge domain config. In the bd_bitmap, bits for features other
251  * than learning/flooding/forwarding should always be set.
252  */
253  feat_mask = feat_mask & bd_config->feature_bitmap;
254  }
255  else if (config->xconnect)
256  {
257  /* Set the output interface */
258  vnet_buffer (b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
259  }
260  else
261  feat_mask = L2INPUT_FEAT_DROP;
262 
263  /* mask out features from bitmap using packet type and bd config */
264  u32 feature_bitmap = config->feature_bitmap & feat_mask;
265 
266  /* save for next feature graph nodes */
267  vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;
268 
269  /* Determine the next node */
271  feature_bitmap);
272 }
273 
276  vlib_node_runtime_t * node, vlib_frame_t * frame,
277  int do_trace)
278 {
279  u32 n_left_from, *from, *to_next;
280  l2input_next_t next_index;
282 
283  from = vlib_frame_vector_args (frame);
284  n_left_from = frame->n_vectors; /* number of packets to process */
285  next_index = node->cached_next_index;
286 
287  while (n_left_from > 0)
288  {
289  u32 n_left_to_next;
290 
291  /* get space to enqueue frame to graph node "next_index" */
292  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
293 
294  while (n_left_from >= 8 && n_left_to_next >= 4)
295  {
296  u32 bi0, bi1, bi2, bi3;
297  vlib_buffer_t *b0, *b1, *b2, *b3;
298  u32 next0, next1, next2, next3;
299  u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
300 
301  /* Prefetch next iteration. */
302  {
303  vlib_buffer_t *p4, *p5, *p6, *p7;
304 
305  p4 = vlib_get_buffer (vm, from[4]);
306  p5 = vlib_get_buffer (vm, from[5]);
307  p6 = vlib_get_buffer (vm, from[6]);
308  p7 = vlib_get_buffer (vm, from[7]);
309 
310  /* Prefetch the buffer header and packet for the N+2 loop iteration */
311  vlib_prefetch_buffer_header (p4, LOAD);
312  vlib_prefetch_buffer_header (p5, LOAD);
313  vlib_prefetch_buffer_header (p6, LOAD);
314  vlib_prefetch_buffer_header (p7, LOAD);
315 
320 
321  /*
322  * Don't bother prefetching the bridge-domain config (which
323  * depends on the input config above). Only a small number of
324  * bridge domains are expected. Plus the structure is small
325  * and several fit in a cache line.
326  */
327  }
328 
329  /* speculatively enqueue b0 and b1 to the current next frame */
330  /* bi is "buffer index", b is pointer to the buffer */
331  to_next[0] = bi0 = from[0];
332  to_next[1] = bi1 = from[1];
333  to_next[2] = bi2 = from[2];
334  to_next[3] = bi3 = from[3];
335  from += 4;
336  to_next += 4;
337  n_left_from -= 4;
338  n_left_to_next -= 4;
339 
340  b0 = vlib_get_buffer (vm, bi0);
341  b1 = vlib_get_buffer (vm, bi1);
342  b2 = vlib_get_buffer (vm, bi2);
343  b3 = vlib_get_buffer (vm, bi3);
344 
345  if (do_trace)
346  {
347  /* RX interface handles */
348  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
349  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
350  sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_RX];
351  sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_RX];
352 
353  if (b0->flags & VLIB_BUFFER_IS_TRACED)
354  {
356  l2input_trace_t *t =
357  vlib_add_trace (vm, node, b0, sizeof (*t));
358  t->sw_if_index = sw_if_index0;
359  clib_memcpy (t->src, h0->src_address, 6);
360  clib_memcpy (t->dst, h0->dst_address, 6);
361  }
362  if (b1->flags & VLIB_BUFFER_IS_TRACED)
363  {
365  l2input_trace_t *t =
366  vlib_add_trace (vm, node, b1, sizeof (*t));
367  t->sw_if_index = sw_if_index1;
368  clib_memcpy (t->src, h1->src_address, 6);
369  clib_memcpy (t->dst, h1->dst_address, 6);
370  }
371  if (b2->flags & VLIB_BUFFER_IS_TRACED)
372  {
374  l2input_trace_t *t =
375  vlib_add_trace (vm, node, b2, sizeof (*t));
376  t->sw_if_index = sw_if_index2;
377  clib_memcpy (t->src, h2->src_address, 6);
378  clib_memcpy (t->dst, h2->dst_address, 6);
379  }
380  if (b3->flags & VLIB_BUFFER_IS_TRACED)
381  {
383  l2input_trace_t *t =
384  vlib_add_trace (vm, node, b3, sizeof (*t));
385  t->sw_if_index = sw_if_index3;
386  clib_memcpy (t->src, h3->src_address, 6);
387  clib_memcpy (t->dst, h3->dst_address, 6);
388  }
389  }
390 
391  classify_and_dispatch (msm, b0, &next0);
392  classify_and_dispatch (msm, b1, &next1);
393  classify_and_dispatch (msm, b2, &next2);
394  classify_and_dispatch (msm, b3, &next3);
395 
396  /* verify speculative enqueues, maybe switch current next frame */
397  /* if next0==next1==next_index then nothing special needs to be done */
398  vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
399  to_next, n_left_to_next,
400  bi0, bi1, bi2, bi3,
401  next0, next1, next2, next3);
402  }
403 
404  while (n_left_from > 0 && n_left_to_next > 0)
405  {
406  u32 bi0;
407  vlib_buffer_t *b0;
408  u32 next0;
409  u32 sw_if_index0;
410 
411  /* speculatively enqueue b0 to the current next frame */
412  bi0 = from[0];
413  to_next[0] = bi0;
414  from += 1;
415  to_next += 1;
416  n_left_from -= 1;
417  n_left_to_next -= 1;
418 
419  b0 = vlib_get_buffer (vm, bi0);
420 
421  if (do_trace && PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
422  {
424  l2input_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
425  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
426  t->sw_if_index = sw_if_index0;
427  clib_memcpy (t->src, h0->src_address, 6);
428  clib_memcpy (t->dst, h0->dst_address, 6);
429  }
430 
431  classify_and_dispatch (msm, b0, &next0);
432 
433  /* verify speculative enqueue, maybe switch current next frame */
434  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
435  to_next, n_left_to_next,
436  bi0, next0);
437  }
438 
439  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
440  }
441 
443  L2INPUT_ERROR_L2INPUT, frame->n_vectors);
444 
445  return frame->n_vectors;
446 }
447 
448 static uword
450  vlib_node_runtime_t * node, vlib_frame_t * frame)
451 {
452  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
453  return l2input_node_inline (vm, node, frame, 1 /* do_trace */ );
454  return l2input_node_inline (vm, node, frame, 0 /* do_trace */ );
455 }
456 
457 /* *INDENT-OFF* */
459  .function = l2input_node_fn,
460  .name = "l2-input",
461  .vector_size = sizeof (u32),
462  .format_trace = format_l2input_trace,
463  .format_buffer = format_ethernet_header_with_length,
464  .type = VLIB_NODE_TYPE_INTERNAL,
465 
466  .n_errors = ARRAY_LEN(l2input_error_strings),
467  .error_strings = l2input_error_strings,
468 
469  .n_next_nodes = L2INPUT_N_NEXT,
470 
471  /* edit / add dispositions here */
472  .next_nodes = {
473  [L2INPUT_NEXT_LEARN] = "l2-learn",
474  [L2INPUT_NEXT_FWD] = "l2-fwd",
475  [L2INPUT_NEXT_DROP] = "error-drop",
476  },
477 };
478 /* *INDENT-ON* */
479 
482 {
484 
485  mp->vlib_main = vm;
486  mp->vnet_main = vnet_get_main ();
487 
488  /* Get packets RX'd from L2 interfaces */
490 
491  /* Create the config vector */
492  vec_validate (mp->configs, 100);
493  /* create 100 sw interface entries and zero them */
494 
495  /* Initialize the feature next-node indexes */
497  l2input_node.index,
501 
502  return 0;
503 }
504 
506 
507 
508 /** Get a pointer to the config for the given interface. */
511 {
513 
514  vec_validate (mp->configs, sw_if_index);
515  return vec_elt_at_index (mp->configs, sw_if_index);
516 }
517 
518 /** Enable (or disable) the feature in the bitmap for the given interface. */
519 u32
520 l2input_intf_bitmap_enable (u32 sw_if_index, u32 feature_bitmap, u32 enable)
521 {
522  l2_input_config_t *config = l2input_intf_config (sw_if_index);
523 
524  if (enable)
525  config->feature_bitmap |= feature_bitmap;
526  else
527  config->feature_bitmap &= ~feature_bitmap;
528 
529  return config->feature_bitmap;
530 }
531 
532 u32
533 l2input_set_bridge_features (u32 bd_index, u32 feat_mask, u32 feat_value)
534 {
535  l2_bridge_domain_t *bd_config = l2input_bd_config (bd_index);;
536  bd_validate (bd_config);
537  bd_config->feature_bitmap =
538  (bd_config->feature_bitmap & ~feat_mask) | feat_value;
539  return bd_config->feature_bitmap;
540 }
541 
542 /**
543  * Set the subinterface to run in l2 or l3 mode.
544  * For L3 mode, just the sw_if_index is specified.
545  * For bridged mode, the bd id and bvi flag are also specified.
546  * For xconnect mode, the peer sw_if_index is also specified.
547  * Return 0 if ok, or non-0 if there was an error.
548  */
549 
550 u32
552  u32 mode, /* One of L2 modes or back to L3 mode */
553  u32 sw_if_index, /* sw interface index */
554  u32 bd_index, /* for bridged interface */
555  u32 bvi, /* the bridged interface is the BVI */
556  u32 shg, /* the bridged interface split horizon group */
557  u32 xc_sw_if_index) /* peer interface for xconnect */
558 {
561  vnet_main_t *vnm = vnet_get_main ();
563  l2_output_config_t *out_config;
564  l2_input_config_t *config;
565  l2_bridge_domain_t *bd_config;
566  i32 l2_if_adjust = 0;
567  vnet_device_class_t *dev_class;
568 
569  hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
570  config = l2input_intf_config (sw_if_index);
571 
572  if (config->bridge)
573  {
574  /* Interface is already in bridge mode. Undo the existing config. */
575  bd_config = vec_elt_at_index (mp->bd_configs, config->bd_index);
576 
577  /* remove interface from flood vector */
578  bd_remove_member (bd_config, sw_if_index);
579 
580  /* undo any BVI-related config */
581  if (bd_config->bvi_sw_if_index == sw_if_index)
582  {
584 
585  bd_config->bvi_sw_if_index = ~0;
586  config->bvi = 0;
587 
588  /* delete the l2fib entry for the bvi interface */
589  l2fib_del_entry (hi->hw_address, config->bd_index, sw_if_index);
590 
591  /* since this is a no longer BVI interface do not to flood to it */
592  si = vnet_get_sw_interface (vnm, sw_if_index);
594  }
595 
596  /* Clear MACs learned on the interface */
597  if ((config->feature_bitmap & L2INPUT_FEAT_LEARN) ||
598  (bd_config->feature_bitmap & L2INPUT_FEAT_LEARN))
599  l2fib_flush_int_mac (vm, sw_if_index);
600 
601  l2_if_adjust--;
602  }
603  else if (config->xconnect)
604  {
605  l2_if_adjust--;
606  }
607 
608  /* Make sure vector is big enough */
611 
612  /* Initialize the l2-input configuration for the interface */
613  if (mode == MODE_L3)
614  {
615  /* Set L2 config to BD index 0 so that if any packet accidentally
616  * came in on L2 path, it will be dropped in BD 0 */
617  config->xconnect = 0;
618  config->bridge = 0;
619  config->shg = 0;
620  config->bd_index = 0;
621  config->feature_bitmap = L2INPUT_FEAT_DROP;
622 
623  /* Clear L2 output config */
624  out_config = l2output_intf_config (sw_if_index);
625  memset (out_config, 0, sizeof (l2_output_config_t));
626 
627  /* Make sure any L2-output packet to this interface now in L3 mode is
628  * dropped. This may happen if L2 FIB MAC entry is stale */
629  l2om->output_node_index_vec[sw_if_index] = L2OUTPUT_NEXT_BAD_INTF;
630  }
631  else
632  {
633  /* Add or update l2-output node next-arc and output_node_index_vec table
634  * for the interface */
635  l2output_create_output_node_mapping (vm, vnet_main, sw_if_index);
636 
637  if (mode == MODE_L2_BRIDGE)
638  {
639  /*
640  * Remove a check that the interface must be an Ethernet.
641  * Specifically so we can bridge to L3 tunnel interfaces.
642  * Here's the check:
643  * if (hi->hw_class_index != ethernet_hw_interface_class.index)
644  *
645  */
646  if (!hi)
647  return MODE_ERROR_ETH; /* non-ethernet */
648 
649  config->xconnect = 0;
650  config->bridge = 1;
651  config->bd_index = bd_index;
652  *l2fib_valid_swif_seq_num (sw_if_index) += 1;
653 
654  /*
655  * Enable forwarding, flooding, learning and ARP termination by default
656  * (note that ARP term is disabled on BD feature bitmap by default)
657  */
658  config->feature_bitmap |= L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD |
659  L2INPUT_FEAT_FLOOD | L2INPUT_FEAT_LEARN | L2INPUT_FEAT_ARP_TERM;
660 
661  /* Make sure last-chance drop is configured */
662  config->feature_bitmap |= L2INPUT_FEAT_DROP;
663 
664  /* Make sure xconnect is disabled */
665  config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT;
666 
667  /* Set up bridge domain */
668  bd_config = l2input_bd_config (bd_index);
669  bd_validate (bd_config);
670 
671  /* TODO: think: add l2fib entry even for non-bvi interface? */
672 
673  /* Do BVI interface initializations */
674  if (bvi)
675  {
677 
678  /* ensure BD has no bvi interface (or replace that one with this??) */
679  if (bd_config->bvi_sw_if_index != ~0)
680  {
681  return MODE_ERROR_BVI_DEF; /* bd already has a bvi interface */
682  }
683  bd_config->bvi_sw_if_index = sw_if_index;
684  config->bvi = 1;
685 
686  /* create the l2fib entry for the bvi interface */
687  l2fib_add_fwd_entry (hi->hw_address, bd_index, sw_if_index, 1, 1); /* static + bvi */
688 
689  /* Disable learning by default. no use since l2fib entry is static. */
690  config->feature_bitmap &= ~L2INPUT_FEAT_LEARN;
691 
692  /* since this is a BVI interface we want to flood to it */
693  si = vnet_get_sw_interface (vnm, sw_if_index);
695  }
696 
697  /* Add interface to bridge-domain flood vector */
698  l2_flood_member_t member = {
699  .sw_if_index = sw_if_index,
701  .shg = shg,
702  };
703  bd_add_member (bd_config, &member);
704 
705  }
706  else if (mode == MODE_L2_XC)
707  {
708  config->xconnect = 1;
709  config->bridge = 0;
710  config->output_sw_if_index = xc_sw_if_index;
711 
712  /* Make sure last-chance drop is configured */
713  config->feature_bitmap |= L2INPUT_FEAT_DROP;
714 
715  /* Make sure bridging features are disabled */
716  config->feature_bitmap &=
717  ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
718 
719  config->feature_bitmap |= L2INPUT_FEAT_XCONNECT;
720  shg = 0; /* not used in xconnect */
721  }
722  else if (mode == MODE_L2_CLASSIFY)
723  {
724  config->xconnect = 1;
725  config->bridge = 0;
726  config->output_sw_if_index = xc_sw_if_index;
727 
728  /* Make sure last-chance drop is configured */
729  config->feature_bitmap |=
730  L2INPUT_FEAT_DROP | L2INPUT_FEAT_INPUT_CLASSIFY;
731 
732  /* Make sure bridging features are disabled */
733  config->feature_bitmap &=
734  ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
735  shg = 0; /* not used in xconnect */
736 
737  /* Insure all packets go to ethernet-input */
738  ethernet_set_rx_redirect (vnet_main, hi, 1);
739  }
740 
741  /* set up split-horizon group and set output feature bit */
742  config->shg = shg;
743  out_config = l2output_intf_config (sw_if_index);
744  out_config->shg = shg;
745  out_config->feature_bitmap |= L2OUTPUT_FEAT_OUTPUT;
746 
747  /*
748  * Test: remove this when non-IP features can be configured.
749  * Enable a non-IP feature to test IP feature masking
750  * config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT;
751  */
752 
753  l2_if_adjust++;
754  }
755 
756  /* Adjust count of L2 interfaces */
757  hi->l2_if_count += l2_if_adjust;
758 
760  {
761  if ((hi->l2_if_count == 1) && (l2_if_adjust == 1))
762  {
763  /* Just added first L2 interface on this port */
764 
765  /* Set promiscuous mode on the l2 interface */
766  ethernet_set_flags (vnet_main, hi->hw_if_index,
768 
769  /* ensure all packets go to ethernet-input */
770  ethernet_set_rx_redirect (vnet_main, hi, 1);
771 
772  }
773  else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1))
774  {
775  /* Just removed only L2 subinterface on this port */
776 
777  /* Disable promiscuous mode on the l2 interface */
778  ethernet_set_flags (vnet_main, hi->hw_if_index, 0);
779 
780  /* Allow ip packets to go directly to ip4-input etc */
781  ethernet_set_rx_redirect (vnet_main, hi, 0);
782  }
783  }
784 
785  /* Set up the L2/L3 flag in the interface parsing tables */
786  ethernet_sw_interface_set_l2_mode (vnm, sw_if_index, (mode != MODE_L3));
787 
788  dev_class = vnet_get_device_class (vnet_main, hi->dev_class_index);
789  if (dev_class->set_l2_mode_function)
790  {
791  dev_class->set_l2_mode_function (vnet_main, hi, l2_if_adjust);
792  }
793 
794  return 0;
795 }
796 
797 /**
798  * Set subinterface in bridging mode with a bridge-domain ID.
799  * The CLI format is:
800  * set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group]
801  */
802 static clib_error_t *
804  unformat_input_t * input, vlib_cli_command_t * cmd)
805 {
806  vnet_main_t *vnm = vnet_get_main ();
807  clib_error_t *error = 0;
808  u32 bd_index, bd_id;
809  u32 sw_if_index;
810  u32 bvi;
811  u32 rc;
812  u32 shg;
813 
814  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
815  {
816  error = clib_error_return (0, "unknown interface `%U'",
817  format_unformat_error, input);
818  goto done;
819  }
820 
821  if (!unformat (input, "%d", &bd_id))
822  {
823  error = clib_error_return (0, "expected bridge domain ID `%U'",
824  format_unformat_error, input);
825  goto done;
826  }
827 
828  if (bd_id > L2_BD_ID_MAX)
829  {
830  error = clib_error_return (0, "bridge domain ID exceed 16M limit",
831  format_unformat_error, input);
832  goto done;
833  }
834  bd_index = bd_find_or_add_bd_index (&bd_main, bd_id);
835 
836  /* optional bvi */
837  bvi = unformat (input, "bvi");
838 
839  /* optional split horizon group */
840  shg = 0;
841  (void) unformat (input, "%d", &shg);
842 
843  /* set the interface mode */
844  if ((rc =
845  set_int_l2_mode (vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index, bvi,
846  shg, 0)))
847  {
848  if (rc == MODE_ERROR_ETH)
849  {
850  error = clib_error_return (0, "bridged interface must be ethernet",
851  format_unformat_error, input);
852  }
853  else if (rc == MODE_ERROR_BVI_DEF)
854  {
855  error =
856  clib_error_return (0, "bridge-domain already has a bvi interface",
857  format_unformat_error, input);
858  }
859  else
860  {
861  error = clib_error_return (0, "invalid configuration for interface",
862  format_unformat_error, input);
863  }
864  goto done;
865  }
866 
867 done:
868  return error;
869 }
870 
871 /*?
872  * Use this command put an interface into Layer 2 bridge domain. If a
873  * bridge-domain with the provided bridge-domain-id does not exist, it
874  * will be created. Interfaces in a bridge-domain forward packets to
875  * other interfaces in the same bridge-domain based on destination mac
876  * address. To remove an interface from a the Layer 2 bridge domain,
877  * put the interface in a different mode, for example Layer 3 mode.
878  *
879  * Optionally, an interface can be added to a Layer 2 bridge-domain as
880  * a Bridged Virtual Interface (bvi). Only one interface in a Layer 2
881  * bridge-domain can be a bvi.
882  *
883  * Optionally, a split-horizon group can also be specified. This defaults
884  * to 0 if not specified.
885  *
886  * @cliexpar
887  * Example of how to configure a Layer 2 bridge-domain with three
888  * interfaces (where 200 is the bridge-domain-id):
889  * @cliexcmd{set interface l2 bridge GigabitEthernet0/8/0.200 200}
890  * This interface is added a BVI interface:
891  * @cliexcmd{set interface l2 bridge GigabitEthernet0/9/0.200 200 bvi}
892  * This interface also has a split-horizon group of 1 specified:
893  * @cliexcmd{set interface l2 bridge GigabitEthernet0/a/0.200 200 1}
894  * Example of how to remove an interface from a Layer2 bridge-domain:
895  * @cliexcmd{set interface l3 GigabitEthernet0/a/0.200}
896 ?*/
897 /* *INDENT-OFF* */
898 VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = {
899  .path = "set interface l2 bridge",
900  .short_help = "set interface l2 bridge <interface> <bridge-domain-id> [bvi] [shg]",
901  .function = int_l2_bridge,
902 };
903 /* *INDENT-ON* */
904 
905 /**
906  * Set subinterface in xconnect mode with another interface.
907  * The CLI format is:
908  * set interface l2 xconnect <interface> <peer interface>
909  */
910 static clib_error_t *
912  unformat_input_t * input, vlib_cli_command_t * cmd)
913 {
914  vnet_main_t *vnm = vnet_get_main ();
915  clib_error_t *error = 0;
916  u32 sw_if_index;
917  u32 xc_sw_if_index;
918 
919  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
920  {
921  error = clib_error_return (0, "unknown interface `%U'",
922  format_unformat_error, input);
923  goto done;
924  }
925 
926  if (!unformat_user
927  (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index))
928  {
929  error = clib_error_return (0, "unknown peer interface `%U'",
930  format_unformat_error, input);
931  goto done;
932  }
933 
934  /* set the interface mode */
935  if (set_int_l2_mode
936  (vm, vnm, MODE_L2_XC, sw_if_index, 0, 0, 0, xc_sw_if_index))
937  {
938  error = clib_error_return (0, "invalid configuration for interface",
939  format_unformat_error, input);
940  goto done;
941  }
942 
943 done:
944  return error;
945 }
946 
947 /*?
948  * Use this command put an interface into Layer 2 cross-connect mode.
949  * Both interfaces must be in this mode for bi-directioal traffic. All
950  * packets received on one interface will be transmitted to the other.
951  * To remove the Layer 2 cross-connect, put the interface in a different
952  * mode, for example Layer 3 mode.
953  *
954  * @cliexpar
955  * Example of how to configure a Layer2 cross-connect between two interfaces:
956  * @cliexcmd{set interface l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300}
957  * @cliexcmd{set interface l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300}
958  * Example of how to remove a Layer2 cross-connect:
959  * @cliexcmd{set interface l3 GigabitEthernet0/8/0.300}
960  * @cliexcmd{set interface l3 GigabitEthernet0/9/0.300}
961 ?*/
962 /* *INDENT-OFF* */
963 VLIB_CLI_COMMAND (int_l2_xc_cli, static) = {
964  .path = "set interface l2 xconnect",
965  .short_help = "set interface l2 xconnect <interface> <peer interface>",
966  .function = int_l2_xc,
967 };
968 /* *INDENT-ON* */
969 
970 /**
971  * Set subinterface in L3 mode.
972  * The CLI format is:
973  * set interface l3 <interface>
974  */
975 static clib_error_t *
977 {
978  vnet_main_t *vnm = vnet_get_main ();
979  clib_error_t *error = 0;
980  u32 sw_if_index;
981 
982  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
983  {
984  error = clib_error_return (0, "unknown interface `%U'",
985  format_unformat_error, input);
986  goto done;
987  }
988 
989  /* set the interface mode */
990  if (set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0))
991  {
992  error = clib_error_return (0, "invalid configuration for interface",
993  format_unformat_error, input);
994  goto done;
995  }
996 
997 done:
998  return error;
999 }
1000 
1001 /*?
1002  * Modify the packet processing mode of the interface to Layer 3, which
1003  * implies packets will be routed. This is the default mode of an interface.
1004  * Use this command to remove an interface from a Layer 2 cross-connect or a
1005  * Layer 2 bridge.
1006  *
1007  * @cliexpar
1008  * Example of how to set the mode of an interface to Layer 3:
1009  * @cliexcmd{set interface l3 GigabitEthernet0/8/0.200}
1010 ?*/
1011 /* *INDENT-OFF* */
1012  VLIB_CLI_COMMAND (int_l3_cli, static) = {
1013  .path = "set interface l3",
1014  .short_help = "set interface l3 <interface>",
1015  .function = int_l3,
1016 };
1017 /* *INDENT-ON* */
1018 
1019 /**
1020  * Show interface mode.
1021  * The CLI format is:
1022  * show mode [<if-name1> <if-name2> ...]
1023  */
1024 static clib_error_t *
1026  unformat_input_t * input, vlib_cli_command_t * cmd)
1027 {
1028  vnet_main_t *vnm = vnet_get_main ();
1029  clib_error_t *error = 0;
1030  char *mode;
1031  u8 *args;
1033 
1034  vnet_sw_interface_t *si, *sis = 0;
1035  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1036  {
1037  u32 sw_if_index;
1038 
1039  /* See if user wants to show specific interface */
1040  if (unformat
1041  (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
1042  {
1043  si = pool_elt_at_index (im->sw_interfaces, sw_if_index);
1044  vec_add1 (sis, si[0]);
1045  }
1046  else
1047  {
1048  error = clib_error_return (0, "unknown input `%U'",
1049  format_unformat_error, input);
1050  goto done;
1051  }
1052  }
1053 
1054  if (vec_len (sis) == 0) /* Get all interfaces */
1055  {
1056  /* Gather interfaces. */
1058  _vec_len (sis) = 0;
1059  /* *INDENT-OFF* */
1060  pool_foreach (si, im->sw_interfaces, ({ vec_add1 (sis, si[0]); }));
1061  /* *INDENT-ON* */
1062  }
1063 
1064  vec_foreach (si, sis)
1065  {
1067  if (config->bridge)
1068  {
1069  u32 bd_id;
1070  mode = "l2 bridge";
1071  bd_id = l2input_main.bd_configs[config->bd_index].bd_id;
1072 
1073  args = format (0, "bd_id %d%s%d", bd_id,
1074  config->bvi ? " bvi shg " : " shg ", config->shg);
1075  }
1076  else if (config->xconnect)
1077  {
1078  mode = "l2 xconnect";
1079  args = format (0, "%U",
1081  vnm, config->output_sw_if_index);
1082  }
1083  else
1084  {
1085  mode = "l3";
1086  args = format (0, " ");
1087  }
1088  vlib_cli_output (vm, "%s %U %v\n",
1089  mode,
1091  vnm, si->sw_if_index, args);
1092  vec_free (args);
1093  }
1094 
1095 done:
1096  vec_free (sis);
1097 
1098  return error;
1099 }
1100 
1101 /*?
1102  * Show the packet processing mode (Layer2 xcross-onnect, Layer 2 bridge,
1103  * Layer 3 routed) of all interfaces and sub-interfaces, or limit the
1104  * output to just the provided list of interfaces and sub-interfaces.
1105  * The output shows the mode, the interface, and if the interface is
1106  * a member of a bridge, the bridge-domain-id and the split horizen group (shg).
1107  *
1108  * @cliexpar
1109  * Example of displaying the mode of all interfaces:
1110  * @cliexstart{show mode}
1111  * l3 local0
1112  * l3 GigabitEthernet0/8/0
1113  * l3 GigabitEthernet0/9/0
1114  * l3 GigabitEthernet0/a/0
1115  * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
1116  * l2 bridge GigabitEthernet0/9/0.200 bd_id 200 shg 0
1117  * l2 bridge GigabitEthernet0/a/0.200 bd_id 200 shg 0
1118  * l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300
1119  * l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300
1120  * @cliexend
1121  * Example of displaying the mode of a seleted list of interfaces:
1122  * @cliexstart{show mode GigabitEthernet0/8/0 GigabitEthernet0/8/0.200}
1123  * l3 GigabitEthernet0/8/0
1124  * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
1125  * @cliexend
1126 ?*/
1127 /* *INDENT-OFF* */
1128 VLIB_CLI_COMMAND (show_l2_mode, static) = {
1129  .path = "show mode",
1130  .short_help = "show mode [<if-name1> <if-name2> ...]",
1131  .function = show_int_mode,
1132 };
1133 /* *INDENT-ON* */
1134 
1135 #define foreach_l2_init_function \
1136 _(feat_bitmap_drop_init) \
1137 _(l2fib_init) \
1138 _(l2_input_classify_init) \
1139 _(l2bd_init) \
1140 _(l2fwd_init) \
1141 _(l2_in_out_acl_init) \
1142 _(l2input_init) \
1143 _(l2_vtr_init) \
1144 _(l2_invtr_init) \
1145 _(l2_efp_filter_init) \
1146 _(l2learn_init) \
1147 _(l2flood_init) \
1148 _(l2output_init) \
1149 _(l2_patch_init) \
1150 _(l2_xcrw_init)
1151 
1152 clib_error_t *
1154 {
1155  clib_error_t *error;
1156 
1157 #define _(a) do { \
1158  if ((error = vlib_call_init_function (vm, a))) return error; } \
1159 while (0);
1161 #undef _
1162  return 0;
1163 }
1164 
1166 
1167 /*
1168  * fd.io coding-style-patch-verification: ON
1169  *
1170  * Local Variables:
1171  * eval: (c-set-style "gnu")
1172  * End:
1173  */
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:437
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:976
l2_input_config_t * configs
Definition: l2_input.h:66
#define L2_FLOOD_MEMBER_NORMAL
Definition: l2_bd.h:41
#define CLIB_UNUSED(x)
Definition: clib.h:79
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:64
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:533
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:275
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:510
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:523
vlib_node_registration_t l2input_node
(constructor) VLIB_REGISTER_NODE (l2input_node)
Definition: l2_input.c:458
#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:422
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:983
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:184
#define L2_FLOOD_MEMBER_BVI
Definition: l2_bd.h:42
u32 * output_node_index_vec
Definition: l2_output.h:62
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:803
format_function_t format_vnet_sw_if_index_name
unsigned char u8
Definition: types.h:56
l2input_error_t
Definition: l2_input.c:119
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:593
vnet_flood_class_t flood_class
Definition: interface.h:703
#define static_always_inline
Definition: clib.h:93
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:443
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:156
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:207
#define vec_new(T, N)
Create new vector of given type and length (unspecified alignment, no header).
Definition: vec.h:309
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:139
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:184
#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
u32 l2fib_del_entry(u8 *mac, u32 bd_index, u32 sw_if_index)
Delete an entry from the l2fib.
Definition: l2_fib.c:662
unsigned int u32
Definition: types.h:88
u32 set_int_l2_mode(vlib_main_t *vm, vnet_main_t *vnet_main, u32 mode, u32 sw_if_index, u32 bd_index, u32 bvi, u32 shg, u32 xc_sw_if_index)
Set the subinterface to run in l2 or l3 mode.
Definition: l2_input.c:551
void ethernet_set_rx_redirect(vnet_main_t *vnm, vnet_hw_interface_t *hi, u32 enable)
#define foreach_l2input_error
Definition: l2_input.c:115
#define VLIB_NODE_FUNCTION_MULTIARCH(node, fn)
Definition: node.h:194
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:607
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:464
static_always_inline u8 * l2fib_valid_swif_seq_num(u32 sw_if_index)
Definition: l2_fib.h:429
vnet_main_t * vnet_main
Definition: l2_input.h:73
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:202
#define PREDICT_FALSE(x)
Definition: clib.h:105
vnet_main_t vnet_main
Definition: misc.c:43
l2output_main_t l2output_main
Definition: l2_output.c:67
u32 feat_next_node_index[32]
Definition: l2_input.h:63
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
#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:364
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:911
static void l2fib_add_fwd_entry(u8 *mac, u32 bd_index, u32 sw_if_index, u8 static_mac, u8 bvi_mac)
Definition: l2_fib.h:393
#define L2INPUT_BVI
Definition: l2_input.h:101
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1168
vnet_hw_interface_class_t ethernet_hw_interface_class
u8 * format_ethernet_header_with_length(u8 *s, va_list *args)
Definition: format.c:91
#define foreach_l2_init_function
Definition: l2_input.c:1135
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:153
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
u16 n_vectors
Definition: node.h:380
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:77
vlib_main_t * vm
Definition: buffer.c:294
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:339
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:211
void ethernet_register_l2_input(vlib_main_t *vm, u32 node_index)
Definition: node.c:1373
#define clib_memcpy(a, b, c)
Definition: string.h:75
#define ETHERNET_INTERFACE_FLAG_ACCEPT_ALL
Definition: ethernet.h:147
#define ARRAY_LEN(x)
Definition: clib.h:59
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:454
static_always_inline l2_bridge_domain_t * l2input_bd_config(u32 bd_index)
Definition: l2_input.h:90
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:374
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
signed int i32
Definition: types.h:81
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:492
#define L2_BD_ID_MAX
Definition: l2_bd.h:100
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:174
#define foreach_l2input_feat
Definition: l2_input.h:106
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:1025
static_always_inline void classify_and_dispatch(l2input_main_t *msm, vlib_buffer_t *b0, u32 *next0)
Definition: l2_input.c:143
#define MODE_L2_XC
Definition: l2_input.h:208
clib_error_t * l2_init(vlib_main_t *vm)
Definition: l2_input.c:1153
static uword l2input_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: l2_input.c:449
static void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
Definition: trace_funcs.h:55
u32 l2input_intf_bitmap_enable(u32 sw_if_index, u32 feature_bitmap, u32 enable)
Enable (or disable) the feature in the bitmap for the given interface.
Definition: l2_input.c:520
static u8 * format_l2input_trace(u8 *s, va_list *args)
Definition: l2_input.c:100
clib_error_t * l2input_init(vlib_main_t *vm)
Definition: l2_input.c:481
Definition: defs.h:47
l2input_main_t l2input_main
Definition: l2_input.c:113
void ethernet_sw_interface_set_l2_mode(vnet_main_t *vnm, u32 sw_if_index, u32 l2)
Definition: node.c:1014
u32 feature_bitmap
Definition: l2_bd.h:56
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
static char * l2input_error_strings[]
Definition: l2_input.c:127
u64 uword
Definition: types.h:112
vnet_sw_interface_t * sw_interfaces
Definition: interface.h:802
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:267
l2_bridge_domain_t * bd_configs
Definition: l2_input.h:69
#define vnet_buffer(b)
Definition: buffer.h:360
#define MODE_ERROR_BVI_DEF
Definition: l2_input.h:212
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
u8 data[0]
Packet data.
Definition: buffer.h:172
#define MODE_L2_CLASSIFY
Definition: l2_input.h:209
#define vec_foreach(var, vec)
Vector iterator.
#define get_u16(addr)
u16 flags
Copy of main node flags.
Definition: node.h:486
u32 sw_if_index
Definition: l2_bd.h:46
l2input_next_t
Definition: l2_input.c:133
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:295
#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:62
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:111
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:681
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:781
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:57
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:206
vlib_main_t * vlib_main
Definition: l2_input.h:72
u32 ethernet_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:367
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128