FD.io VPP  v18.01-8-g0eacf49
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  u16 ethertype;
160  u8 protocol;
161  l2_input_config_t *config;
162  l2_bridge_domain_t *bd_config;
163  u16 bd_index0;
164  u32 feature_bitmap;
165  u32 feat_mask;
166  ethernet_header_t *h0;
167  u8 *l3h0;
168  u32 sw_if_index0;
169 
170 #define get_u16(addr) ( *((u16 *)(addr)) )
171 
172  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
173 
174  h0 = vlib_buffer_get_current (b0);
175  l3h0 = (u8 *) h0 + vnet_buffer (b0)->l2.l2_len;
176 
177  ethertype = clib_net_to_host_u16 (get_u16 (l3h0 - 2));
178  feat_mask = ~0;
179 
180  /* Get config for the input interface */
181  config = vec_elt_at_index (msm->configs, sw_if_index0);
182 
183  /* Save split horizon group */
184  vnet_buffer (b0)->l2.shg = config->shg;
185 
186  /* determine layer2 kind for stat and mask */
188  {
189  protocol = ((ip6_header_t *) l3h0)->protocol;
190 
191  /* Disable bridge forwarding (flooding will execute instead if not xconnect) */
192  feat_mask &= ~(L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD);
193 
194  /* Disable ARP-term for non-ARP and non-ICMP6 packet */
195  if (ethertype != ETHERNET_TYPE_ARP &&
196  (ethertype != ETHERNET_TYPE_IP6 || protocol != IP_PROTOCOL_ICMP6))
197  feat_mask &= ~(L2INPUT_FEAT_ARP_TERM);
198 
199  /*
200  * For packet from BVI - set SHG of ARP request or ICMPv6 neighbor
201  * solicitation packet from BVI to 0 so it can also flood to VXLAN
202  * tunnels or other ports with the same SHG as that of the BVI.
203  */
204  else if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] ==
205  L2INPUT_BVI))
206  {
207  if (ethertype == ETHERNET_TYPE_ARP)
208  {
210  if (arp0->opcode ==
211  clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_request))
212  vnet_buffer (b0)->l2.shg = 0;
213  }
214  else /* must be ICMPv6 */
215  {
216  ip6_header_t *iph0 = (ip6_header_t *) l3h0;
217  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh0;
218  ndh0 = ip6_next_header (iph0);
219  if (ndh0->icmp.type == ICMP6_neighbor_solicitation)
220  vnet_buffer (b0)->l2.shg = 0;
221  }
222  }
223  }
224  else
225  {
226  /*
227  * For packet from BVI - set SHG of unicast packet from BVI to 0 so it
228  * is not dropped on output to VXLAN tunnels or other ports with the
229  * same SHG as that of the BVI.
230  */
231  if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] ==
232  L2INPUT_BVI))
233  vnet_buffer (b0)->l2.shg = 0;
234  }
235 
236 
237  if (config->bridge)
238  {
239  /* Do bridge-domain processing */
240  bd_index0 = config->bd_index;
241  /* save BD ID for next feature graph nodes */
242  vnet_buffer (b0)->l2.bd_index = bd_index0;
243 
244  /* Get config for the bridge domain interface */
245  bd_config = vec_elt_at_index (msm->bd_configs, bd_index0);
246 
247  /* Save bridge domain and interface seq_num */
248  /* *INDENT-OFF* */
249  l2fib_seq_num_t sn = {
250  .swif = *l2fib_swif_seq_num(sw_if_index0),
251  .bd = bd_config->seq_num,
252  };
253  /* *INDENT-ON* */
254  vnet_buffer (b0)->l2.l2fib_sn = sn.as_u16;;
255  vnet_buffer (b0)->l2.bd_age = bd_config->mac_age;
256 
257  /*
258  * Process bridge domain feature enables.
259  * To perform learning/flooding/forwarding, the corresponding bit
260  * must be enabled in both the input interface config and in the
261  * bridge domain config. In the bd_bitmap, bits for features other
262  * than learning/flooding/forwarding should always be set.
263  */
264  feat_mask = feat_mask & bd_config->feature_bitmap;
265  }
266  else if (config->xconnect)
267  {
268  /* Set the output interface */
269  vnet_buffer (b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
270  }
271  else
272  feat_mask = L2INPUT_FEAT_DROP;
273 
274  /* mask out features from bitmap using packet type and bd config */
275  feature_bitmap = config->feature_bitmap & feat_mask;
276 
277  /* save for next feature graph nodes */
278  vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;
279 
280  /* Determine the next node */
282  feature_bitmap);
283 }
284 
287  vlib_node_runtime_t * node, vlib_frame_t * frame,
288  int do_trace)
289 {
290  u32 n_left_from, *from, *to_next;
291  l2input_next_t next_index;
293 
294  from = vlib_frame_vector_args (frame);
295  n_left_from = frame->n_vectors; /* number of packets to process */
296  next_index = node->cached_next_index;
297 
298  while (n_left_from > 0)
299  {
300  u32 n_left_to_next;
301 
302  /* get space to enqueue frame to graph node "next_index" */
303  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
304 
305  while (n_left_from >= 8 && n_left_to_next >= 4)
306  {
307  u32 bi0, bi1, bi2, bi3;
308  vlib_buffer_t *b0, *b1, *b2, *b3;
309  u32 next0, next1, next2, next3;
310  u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
311 
312  /* Prefetch next iteration. */
313  {
314  vlib_buffer_t *p4, *p5, *p6, *p7;
315 
316  p4 = vlib_get_buffer (vm, from[4]);
317  p5 = vlib_get_buffer (vm, from[5]);
318  p6 = vlib_get_buffer (vm, from[6]);
319  p7 = vlib_get_buffer (vm, from[7]);
320 
321  /* Prefetch the buffer header and packet for the N+2 loop iteration */
322  vlib_prefetch_buffer_header (p4, LOAD);
323  vlib_prefetch_buffer_header (p5, LOAD);
324  vlib_prefetch_buffer_header (p6, LOAD);
325  vlib_prefetch_buffer_header (p7, LOAD);
326 
331 
332  /*
333  * Don't bother prefetching the bridge-domain config (which
334  * depends on the input config above). Only a small number of
335  * bridge domains are expected. Plus the structure is small
336  * and several fit in a cache line.
337  */
338  }
339 
340  /* speculatively enqueue b0 and b1 to the current next frame */
341  /* bi is "buffer index", b is pointer to the buffer */
342  to_next[0] = bi0 = from[0];
343  to_next[1] = bi1 = from[1];
344  to_next[2] = bi2 = from[2];
345  to_next[3] = bi3 = from[3];
346  from += 4;
347  to_next += 4;
348  n_left_from -= 4;
349  n_left_to_next -= 4;
350 
351  b0 = vlib_get_buffer (vm, bi0);
352  b1 = vlib_get_buffer (vm, bi1);
353  b2 = vlib_get_buffer (vm, bi2);
354  b3 = vlib_get_buffer (vm, bi3);
355 
356  if (do_trace)
357  {
358  /* RX interface handles */
359  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
360  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
361  sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_RX];
362  sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_RX];
363 
364  if (b0->flags & VLIB_BUFFER_IS_TRACED)
365  {
367  l2input_trace_t *t =
368  vlib_add_trace (vm, node, b0, sizeof (*t));
369  t->sw_if_index = sw_if_index0;
370  clib_memcpy (t->src, h0->src_address, 6);
371  clib_memcpy (t->dst, h0->dst_address, 6);
372  }
373  if (b1->flags & VLIB_BUFFER_IS_TRACED)
374  {
376  l2input_trace_t *t =
377  vlib_add_trace (vm, node, b1, sizeof (*t));
378  t->sw_if_index = sw_if_index1;
379  clib_memcpy (t->src, h1->src_address, 6);
380  clib_memcpy (t->dst, h1->dst_address, 6);
381  }
382  if (b2->flags & VLIB_BUFFER_IS_TRACED)
383  {
385  l2input_trace_t *t =
386  vlib_add_trace (vm, node, b2, sizeof (*t));
387  t->sw_if_index = sw_if_index2;
388  clib_memcpy (t->src, h2->src_address, 6);
389  clib_memcpy (t->dst, h2->dst_address, 6);
390  }
391  if (b3->flags & VLIB_BUFFER_IS_TRACED)
392  {
394  l2input_trace_t *t =
395  vlib_add_trace (vm, node, b3, sizeof (*t));
396  t->sw_if_index = sw_if_index3;
397  clib_memcpy (t->src, h3->src_address, 6);
398  clib_memcpy (t->dst, h3->dst_address, 6);
399  }
400  }
401 
403  L2INPUT_ERROR_L2INPUT, 4);
404 
405  classify_and_dispatch (msm, b0, &next0);
406  classify_and_dispatch (msm, b1, &next1);
407  classify_and_dispatch (msm, b2, &next2);
408  classify_and_dispatch (msm, b3, &next3);
409 
410  /* verify speculative enqueues, maybe switch current next frame */
411  /* if next0==next1==next_index then nothing special needs to be done */
412  vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
413  to_next, n_left_to_next,
414  bi0, bi1, bi2, bi3,
415  next0, next1, next2, next3);
416  }
417 
418  while (n_left_from > 0 && n_left_to_next > 0)
419  {
420  u32 bi0;
421  vlib_buffer_t *b0;
422  u32 next0;
423  u32 sw_if_index0;
424 
425  /* speculatively enqueue b0 to the current next frame */
426  bi0 = from[0];
427  to_next[0] = bi0;
428  from += 1;
429  to_next += 1;
430  n_left_from -= 1;
431  n_left_to_next -= 1;
432 
433  b0 = vlib_get_buffer (vm, bi0);
434 
435  if (do_trace && PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
436  {
438  l2input_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
439  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
440  t->sw_if_index = sw_if_index0;
441  clib_memcpy (t->src, h0->src_address, 6);
442  clib_memcpy (t->dst, h0->dst_address, 6);
443  }
444 
446  L2INPUT_ERROR_L2INPUT, 1);
447 
448  classify_and_dispatch (msm, b0, &next0);
449 
450  /* verify speculative enqueue, maybe switch current next frame */
451  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
452  to_next, n_left_to_next,
453  bi0, next0);
454  }
455 
456  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
457  }
458 
459  return frame->n_vectors;
460 }
461 
462 static uword
464  vlib_node_runtime_t * node, vlib_frame_t * frame)
465 {
466  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
467  return l2input_node_inline (vm, node, frame, 1 /* do_trace */ );
468  return l2input_node_inline (vm, node, frame, 0 /* do_trace */ );
469 }
470 
471 /* *INDENT-OFF* */
473  .function = l2input_node_fn,
474  .name = "l2-input",
475  .vector_size = sizeof (u32),
476  .format_trace = format_l2input_trace,
477  .format_buffer = format_ethernet_header_with_length,
478  .type = VLIB_NODE_TYPE_INTERNAL,
479 
480  .n_errors = ARRAY_LEN(l2input_error_strings),
481  .error_strings = l2input_error_strings,
482 
483  .n_next_nodes = L2INPUT_N_NEXT,
484 
485  /* edit / add dispositions here */
486  .next_nodes = {
487  [L2INPUT_NEXT_LEARN] = "l2-learn",
488  [L2INPUT_NEXT_FWD] = "l2-fwd",
489  [L2INPUT_NEXT_DROP] = "error-drop",
490  },
491 };
492 /* *INDENT-ON* */
493 
496 {
498 
499  mp->vlib_main = vm;
500  mp->vnet_main = vnet_get_main ();
501 
502  /* Get packets RX'd from L2 interfaces */
504 
505  /* Create the config vector */
506  vec_validate (mp->configs, 100);
507  /* create 100 sw interface entries and zero them */
508 
509  /* Initialize the feature next-node indexes */
511  l2input_node.index,
515 
516  return 0;
517 }
518 
520 
521 
522 /** Get a pointer to the config for the given interface. */
525 {
527 
528  vec_validate (mp->configs, sw_if_index);
529  return vec_elt_at_index (mp->configs, sw_if_index);
530 }
531 
532 /** Enable (or disable) the feature in the bitmap for the given interface. */
533 u32
534 l2input_intf_bitmap_enable (u32 sw_if_index, u32 feature_bitmap, u32 enable)
535 {
536  l2_input_config_t *config = l2input_intf_config (sw_if_index);
537 
538  if (enable)
539  config->feature_bitmap |= feature_bitmap;
540  else
541  config->feature_bitmap &= ~feature_bitmap;
542 
543  return config->feature_bitmap;
544 }
545 
546 u32
547 l2input_set_bridge_features (u32 bd_index, u32 feat_mask, u32 feat_value)
548 {
549  l2_bridge_domain_t *bd_config = l2input_bd_config (bd_index);;
550  bd_validate (bd_config);
551  bd_config->feature_bitmap =
552  (bd_config->feature_bitmap & ~feat_mask) | feat_value;
553  return bd_config->feature_bitmap;
554 }
555 
556 /**
557  * Set the subinterface to run in l2 or l3 mode.
558  * For L3 mode, just the sw_if_index is specified.
559  * For bridged mode, the bd id and bvi flag are also specified.
560  * For xconnect mode, the peer sw_if_index is also specified.
561  * Return 0 if ok, or non-0 if there was an error.
562  */
563 
564 u32
566  u32 mode, /* One of L2 modes or back to L3 mode */
567  u32 sw_if_index, /* sw interface index */
568  u32 bd_index, /* for bridged interface */
569  u32 bvi, /* the bridged interface is the BVI */
570  u32 shg, /* the bridged interface split horizon group */
571  u32 xc_sw_if_index) /* peer interface for xconnect */
572 {
575  vnet_main_t *vnm = vnet_get_main ();
577  l2_output_config_t *out_config;
578  l2_input_config_t *config;
579  l2_bridge_domain_t *bd_config;
580  i32 l2_if_adjust = 0;
581  u32 slot;
582 
583  hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
584  config = l2input_intf_config (sw_if_index);
585 
586  if (config->bridge)
587  {
588  /* Interface is already in bridge mode. Undo the existing config. */
589  bd_config = vec_elt_at_index (mp->bd_configs, config->bd_index);
590 
591  /* remove interface from flood vector */
592  bd_remove_member (bd_config, sw_if_index);
593 
594  /* undo any BVI-related config */
595  if (bd_config->bvi_sw_if_index == sw_if_index)
596  {
597  bd_config->bvi_sw_if_index = ~0;
598  config->bvi = 0;
599 
600  /* delete the l2fib entry for the bvi interface */
601  l2fib_del_entry (hi->hw_address, config->bd_index);
602 
603  /* Make loop output node send packet back to ethernet-input node */
604  slot =
606  "ethernet-input",
609  }
610 
611  /* Clear MACs learned on the interface */
612  if ((config->feature_bitmap & L2INPUT_FEAT_LEARN) ||
613  (bd_config->feature_bitmap & L2INPUT_FEAT_LEARN))
614  l2fib_flush_int_mac (vm, sw_if_index);
615 
616  l2_if_adjust--;
617  }
618  else if (config->xconnect)
619  {
620  l2_if_adjust--;
621  }
622 
623  /* Make sure vector is big enough */
626 
627  /* Initialize the l2-input configuration for the interface */
628  if (mode == MODE_L3)
629  {
630  /* Set L2 config to BD index 0 so that if any packet accidentally
631  * came in on L2 path, it will be dropped in BD 0 */
632  config->xconnect = 0;
633  config->bridge = 0;
634  config->shg = 0;
635  config->bd_index = 0;
636  config->feature_bitmap = L2INPUT_FEAT_DROP;
637 
638  /* Clear L2 output config */
639  out_config = l2output_intf_config (sw_if_index);
640  memset (out_config, 0, sizeof (l2_output_config_t));
641 
642  /* Make sure any L2-output packet to this interface now in L3 mode is
643  * dropped. This may happen if L2 FIB MAC entry is stale */
644  l2om->output_node_index_vec[sw_if_index] = L2OUTPUT_NEXT_BAD_INTF;
645  }
646  else
647  {
648  /* Add or update l2-output node next-arc and output_node_index_vec table
649  * for the interface */
650  l2output_create_output_node_mapping (vm, vnet_main, sw_if_index);
651 
652  if (mode == MODE_L2_BRIDGE)
653  {
654  /*
655  * Remove a check that the interface must be an Ethernet.
656  * Specifically so we can bridge to L3 tunnel interfaces.
657  * Here's the check:
658  * if (hi->hw_class_index != ethernet_hw_interface_class.index)
659  *
660  */
661  if (!hi)
662  return MODE_ERROR_ETH; /* non-ethernet */
663 
664  config->xconnect = 0;
665  config->bridge = 1;
666  config->bd_index = bd_index;
667  *l2fib_valid_swif_seq_num (sw_if_index) += 1;
668 
669  /*
670  * Enable forwarding, flooding, learning and ARP termination by default
671  * (note that ARP term is disabled on BD feature bitmap by default)
672  */
673  config->feature_bitmap |= L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD |
674  L2INPUT_FEAT_FLOOD | L2INPUT_FEAT_LEARN | L2INPUT_FEAT_ARP_TERM;
675 
676  /* Make sure last-chance drop is configured */
677  config->feature_bitmap |= L2INPUT_FEAT_DROP;
678 
679  /* Make sure xconnect is disabled */
680  config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT;
681 
682  /* Set up bridge domain */
683  bd_config = l2input_bd_config (bd_index);
684  bd_validate (bd_config);
685 
686  /* TODO: think: add l2fib entry even for non-bvi interface? */
687 
688  /* Do BVI interface initializations */
689  if (bvi)
690  {
691  /* ensure BD has no bvi interface (or replace that one with this??) */
692  if (bd_config->bvi_sw_if_index != ~0)
693  {
694  return MODE_ERROR_BVI_DEF; /* bd already has a bvi interface */
695  }
696  bd_config->bvi_sw_if_index = sw_if_index;
697  config->bvi = 1;
698 
699  /* create the l2fib entry for the bvi interface */
700  l2fib_add_fwd_entry (hi->hw_address, bd_index, sw_if_index, 1, 1); /* static + bvi */
701 
702  /* Disable learning by default. no use since l2fib entry is static. */
703  config->feature_bitmap &= ~L2INPUT_FEAT_LEARN;
704 
705  /* Make loop output node send packet to l2-input node */
706  slot =
708  "l2-input",
711  }
712 
713  /* Add interface to bridge-domain flood vector */
714  l2_flood_member_t member = {
715  .sw_if_index = sw_if_index,
717  .shg = shg,
718  };
719  bd_add_member (bd_config, &member);
720 
721  }
722  else if (mode == MODE_L2_XC)
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 |= L2INPUT_FEAT_DROP;
730 
731  /* Make sure bridging features are disabled */
732  config->feature_bitmap &=
733  ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
734 
735  config->feature_bitmap |= L2INPUT_FEAT_XCONNECT;
736  shg = 0; /* not used in xconnect */
737  }
738  else if (mode == MODE_L2_CLASSIFY)
739  {
740  config->xconnect = 1;
741  config->bridge = 0;
742  config->output_sw_if_index = xc_sw_if_index;
743 
744  /* Make sure last-chance drop is configured */
745  config->feature_bitmap |=
746  L2INPUT_FEAT_DROP | L2INPUT_FEAT_INPUT_CLASSIFY;
747 
748  /* Make sure bridging features are disabled */
749  config->feature_bitmap &=
750  ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
751  shg = 0; /* not used in xconnect */
752 
753  /* Insure all packets go to ethernet-input */
754  ethernet_set_rx_redirect (vnet_main, hi, 1);
755  }
756 
757  /* set up split-horizon group and set output feature bit */
758  config->shg = shg;
759  out_config = l2output_intf_config (sw_if_index);
760  out_config->shg = shg;
761  out_config->feature_bitmap |= L2OUTPUT_FEAT_OUTPUT;
762 
763  /*
764  * Test: remove this when non-IP features can be configured.
765  * Enable a non-IP feature to test IP feature masking
766  * config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT;
767  */
768 
769  l2_if_adjust++;
770  }
771 
772  /* Adjust count of L2 interfaces */
773  hi->l2_if_count += l2_if_adjust;
774 
776  {
777  if ((hi->l2_if_count == 1) && (l2_if_adjust == 1))
778  {
779  /* Just added first L2 interface on this port */
780 
781  /* Set promiscuous mode on the l2 interface */
782  ethernet_set_flags (vnet_main, hi->hw_if_index,
784 
785  /* ensure all packets go to ethernet-input */
786  ethernet_set_rx_redirect (vnet_main, hi, 1);
787 
788  }
789  else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1))
790  {
791  /* Just removed only L2 subinterface on this port */
792 
793  /* Disable promiscuous mode on the l2 interface */
794  ethernet_set_flags (vnet_main, hi->hw_if_index, 0);
795 
796  /* Allow ip packets to go directly to ip4-input etc */
797  ethernet_set_rx_redirect (vnet_main, hi, 0);
798  }
799  }
800 
801  /* Set up the L2/L3 flag in the interface parsing tables */
802  ethernet_sw_interface_set_l2_mode (vnm, sw_if_index, (mode != MODE_L3));
803 
804  return 0;
805 }
806 
807 /**
808  * Set subinterface in bridging mode with a bridge-domain ID.
809  * The CLI format is:
810  * set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group]
811  */
812 static clib_error_t *
814  unformat_input_t * input, vlib_cli_command_t * cmd)
815 {
816  vnet_main_t *vnm = vnet_get_main ();
817  clib_error_t *error = 0;
818  u32 bd_index, bd_id;
819  u32 sw_if_index;
820  u32 bvi;
821  u32 rc;
822  u32 shg;
823 
824  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
825  {
826  error = clib_error_return (0, "unknown interface `%U'",
827  format_unformat_error, input);
828  goto done;
829  }
830 
831  if (!unformat (input, "%d", &bd_id))
832  {
833  error = clib_error_return (0, "expected bridge domain ID `%U'",
834  format_unformat_error, input);
835  goto done;
836  }
837 
838  if (bd_id > L2_BD_ID_MAX)
839  {
840  error = clib_error_return (0, "bridge domain ID exceed 16M limit",
841  format_unformat_error, input);
842  goto done;
843  }
844  bd_index = bd_find_or_add_bd_index (&bd_main, bd_id);
845 
846  /* optional bvi */
847  bvi = unformat (input, "bvi");
848 
849  /* optional split horizon group */
850  shg = 0;
851  (void) unformat (input, "%d", &shg);
852 
853  /* set the interface mode */
854  if ((rc =
855  set_int_l2_mode (vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index, bvi,
856  shg, 0)))
857  {
858  if (rc == MODE_ERROR_ETH)
859  {
860  error = clib_error_return (0, "bridged interface must be ethernet",
861  format_unformat_error, input);
862  }
863  else if (rc == MODE_ERROR_BVI_DEF)
864  {
865  error =
866  clib_error_return (0, "bridge-domain already has a bvi interface",
867  format_unformat_error, input);
868  }
869  else
870  {
871  error = clib_error_return (0, "invalid configuration for interface",
872  format_unformat_error, input);
873  }
874  goto done;
875  }
876 
877 done:
878  return error;
879 }
880 
881 /*?
882  * Use this command put an interface into Layer 2 bridge domain. If a
883  * bridge-domain with the provided bridge-domain-id does not exist, it
884  * will be created. Interfaces in a bridge-domain forward packets to
885  * other interfaces in the same bridge-domain based on destination mac
886  * address. To remove an interface from a the Layer 2 bridge domain,
887  * put the interface in a different mode, for example Layer 3 mode.
888  *
889  * Optionally, an interface can be added to a Layer 2 bridge-domain as
890  * a Bridged Virtual Interface (bvi). Only one interface in a Layer 2
891  * bridge-domain can be a bvi.
892  *
893  * Optionally, a split-horizon group can also be specified. This defaults
894  * to 0 if not specified.
895  *
896  * @cliexpar
897  * Example of how to configure a Layer 2 bridge-domain with three
898  * interfaces (where 200 is the bridge-domain-id):
899  * @cliexcmd{set interface l2 bridge GigabitEthernet0/8/0.200 200}
900  * This interface is added a BVI interface:
901  * @cliexcmd{set interface l2 bridge GigabitEthernet0/9/0.200 200 bvi}
902  * This interface also has a split-horizon group of 1 specified:
903  * @cliexcmd{set interface l2 bridge GigabitEthernet0/a/0.200 200 1}
904  * Example of how to remove an interface from a Layer2 bridge-domain:
905  * @cliexcmd{set interface l3 GigabitEthernet0/a/0.200}
906 ?*/
907 /* *INDENT-OFF* */
908 VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = {
909  .path = "set interface l2 bridge",
910  .short_help = "set interface l2 bridge <interface> <bridge-domain-id> [bvi] [shg]",
911  .function = int_l2_bridge,
912 };
913 /* *INDENT-ON* */
914 
915 /**
916  * Set subinterface in xconnect mode with another interface.
917  * The CLI format is:
918  * set interface l2 xconnect <interface> <peer interface>
919  */
920 static clib_error_t *
922  unformat_input_t * input, vlib_cli_command_t * cmd)
923 {
924  vnet_main_t *vnm = vnet_get_main ();
925  clib_error_t *error = 0;
926  u32 sw_if_index;
927  u32 xc_sw_if_index;
928 
929  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
930  {
931  error = clib_error_return (0, "unknown interface `%U'",
932  format_unformat_error, input);
933  goto done;
934  }
935 
936  if (!unformat_user
937  (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index))
938  {
939  error = clib_error_return (0, "unknown peer interface `%U'",
940  format_unformat_error, input);
941  goto done;
942  }
943 
944  /* set the interface mode */
945  if (set_int_l2_mode
946  (vm, vnm, MODE_L2_XC, sw_if_index, 0, 0, 0, xc_sw_if_index))
947  {
948  error = clib_error_return (0, "invalid configuration for interface",
949  format_unformat_error, input);
950  goto done;
951  }
952 
953 done:
954  return error;
955 }
956 
957 /*?
958  * Use this command put an interface into Layer 2 cross-connect mode.
959  * Both interfaces must be in this mode for bi-directioal traffic. All
960  * packets received on one interface will be transmitted to the other.
961  * To remove the Layer 2 cross-connect, put the interface in a different
962  * mode, for example Layer 3 mode.
963  *
964  * @cliexpar
965  * Example of how to configure a Layer2 cross-connect between two interfaces:
966  * @cliexcmd{set interface l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300}
967  * @cliexcmd{set interface l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300}
968  * Example of how to remove a Layer2 cross-connect:
969  * @cliexcmd{set interface l3 GigabitEthernet0/8/0.300}
970  * @cliexcmd{set interface l3 GigabitEthernet0/9/0.300}
971 ?*/
972 /* *INDENT-OFF* */
973 VLIB_CLI_COMMAND (int_l2_xc_cli, static) = {
974  .path = "set interface l2 xconnect",
975  .short_help = "set interface l2 xconnect <interface> <peer interface>",
976  .function = int_l2_xc,
977 };
978 /* *INDENT-ON* */
979 
980 /**
981  * Set subinterface in L3 mode.
982  * The CLI format is:
983  * set interface l3 <interface>
984  */
985 static clib_error_t *
987 {
988  vnet_main_t *vnm = vnet_get_main ();
989  clib_error_t *error = 0;
990  u32 sw_if_index;
991 
992  if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
993  {
994  error = clib_error_return (0, "unknown interface `%U'",
995  format_unformat_error, input);
996  goto done;
997  }
998 
999  /* set the interface mode */
1000  if (set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0))
1001  {
1002  error = clib_error_return (0, "invalid configuration for interface",
1003  format_unformat_error, input);
1004  goto done;
1005  }
1006 
1007 done:
1008  return error;
1009 }
1010 
1011 /*?
1012  * Modify the packet processing mode of the interface to Layer 3, which
1013  * implies packets will be routed. This is the default mode of an interface.
1014  * Use this command to remove an interface from a Layer 2 cross-connect or a
1015  * Layer 2 bridge.
1016  *
1017  * @cliexpar
1018  * Example of how to set the mode of an interface to Layer 3:
1019  * @cliexcmd{set interface l3 GigabitEthernet0/8/0.200}
1020 ?*/
1021 /* *INDENT-OFF* */
1022  VLIB_CLI_COMMAND (int_l3_cli, static) = {
1023  .path = "set interface l3",
1024  .short_help = "set interface l3 <interface>",
1025  .function = int_l3,
1026 };
1027 /* *INDENT-ON* */
1028 
1029 /**
1030  * Show interface mode.
1031  * The CLI format is:
1032  * show mode [<if-name1> <if-name2> ...]
1033  */
1034 static clib_error_t *
1036  unformat_input_t * input, vlib_cli_command_t * cmd)
1037 {
1038  vnet_main_t *vnm = vnet_get_main ();
1039  clib_error_t *error = 0;
1040  char *mode;
1041  u8 *args;
1043 
1044  vnet_sw_interface_t *si, *sis = 0;
1045  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1046  {
1047  u32 sw_if_index;
1048 
1049  /* See if user wants to show specific interface */
1050  if (unformat
1051  (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
1052  {
1053  si = pool_elt_at_index (im->sw_interfaces, sw_if_index);
1054  vec_add1 (sis, si[0]);
1055  }
1056  else
1057  {
1058  error = clib_error_return (0, "unknown input `%U'",
1059  format_unformat_error, input);
1060  goto done;
1061  }
1062  }
1063 
1064  if (vec_len (sis) == 0) /* Get all interfaces */
1065  {
1066  /* Gather interfaces. */
1068  _vec_len (sis) = 0;
1069  /* *INDENT-OFF* */
1070  pool_foreach (si, im->sw_interfaces, ({ vec_add1 (sis, si[0]); }));
1071  /* *INDENT-ON* */
1072  }
1073 
1074  vec_foreach (si, sis)
1075  {
1077  if (config->bridge)
1078  {
1079  u32 bd_id;
1080  mode = "l2 bridge";
1081  bd_id = l2input_main.bd_configs[config->bd_index].bd_id;
1082 
1083  args = format (0, "bd_id %d%s%d", bd_id,
1084  config->bvi ? " bvi shg " : " shg ", config->shg);
1085  }
1086  else if (config->xconnect)
1087  {
1088  mode = "l2 xconnect";
1089  args = format (0, "%U",
1091  vnm, config->output_sw_if_index);
1092  }
1093  else
1094  {
1095  mode = "l3";
1096  args = format (0, " ");
1097  }
1098  vlib_cli_output (vm, "%s %U %v\n",
1099  mode,
1101  vnm, si->sw_if_index, args);
1102  vec_free (args);
1103  }
1104 
1105 done:
1106  vec_free (sis);
1107 
1108  return error;
1109 }
1110 
1111 /*?
1112  * Show the packet processing mode (Layer2 xcross-onnect, Layer 2 bridge,
1113  * Layer 3 routed) of all interfaces and sub-interfaces, or limit the
1114  * output to just the provided list of interfaces and sub-interfaces.
1115  * The output shows the mode, the interface, and if the interface is
1116  * a member of a bridge, the bridge-domain-id and the split horizen group (shg).
1117  *
1118  * @cliexpar
1119  * Example of displaying the mode of all interfaces:
1120  * @cliexstart{show mode}
1121  * l3 local0
1122  * l3 GigabitEthernet0/8/0
1123  * l3 GigabitEthernet0/9/0
1124  * l3 GigabitEthernet0/a/0
1125  * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
1126  * l2 bridge GigabitEthernet0/9/0.200 bd_id 200 shg 0
1127  * l2 bridge GigabitEthernet0/a/0.200 bd_id 200 shg 0
1128  * l2 xconnect GigabitEthernet0/8/0.300 GigabitEthernet0/9/0.300
1129  * l2 xconnect GigabitEthernet0/9/0.300 GigabitEthernet0/8/0.300
1130  * @cliexend
1131  * Example of displaying the mode of a seleted list of interfaces:
1132  * @cliexstart{show mode GigabitEthernet0/8/0 GigabitEthernet0/8/0.200}
1133  * l3 GigabitEthernet0/8/0
1134  * l2 bridge GigabitEthernet0/8/0.200 bd_id 200 shg 0
1135  * @cliexend
1136 ?*/
1137 /* *INDENT-OFF* */
1138 VLIB_CLI_COMMAND (show_l2_mode, static) = {
1139  .path = "show mode",
1140  .short_help = "show mode [<if-name1> <if-name2> ...]",
1141  .function = show_int_mode,
1142 };
1143 /* *INDENT-ON* */
1144 
1145 #define foreach_l2_init_function \
1146 _(feat_bitmap_drop_init) \
1147 _(l2fib_init) \
1148 _(l2_input_classify_init) \
1149 _(l2bd_init) \
1150 _(l2fwd_init) \
1151 _(l2_inacl_init) \
1152 _(l2input_init) \
1153 _(l2_vtr_init) \
1154 _(l2_invtr_init) \
1155 _(l2_efp_filter_init) \
1156 _(l2learn_init) \
1157 _(l2flood_init) \
1158 _(l2_outacl_init) \
1159 _(l2output_init) \
1160 _(l2_patch_init) \
1161 _(l2_xcrw_init)
1162 
1163 clib_error_t *
1165 {
1166  clib_error_t *error;
1167 
1168 #define _(a) do { \
1169  if ((error = vlib_call_init_function (vm, a))) return error; } \
1170 while (0);
1172 #undef _
1173  return 0;
1174 }
1175 
1177 
1178 /*
1179  * fd.io coding-style-patch-verification: ON
1180  *
1181  * Local Variables:
1182  * eval: (c-set-style "gnu")
1183  * End:
1184  */
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:432
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:986
l2_input_config_t * configs
Definition: l2_input.h:66
sll srl srl sll sra u16x4 i
Definition: vector_sse2.h:337
#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:547
uword vlib_node_add_named_next_with_slot(vlib_main_t *vm, uword node, char *name, uword slot)
Definition: node.c:262
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:286
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:524
u8 src_address[6]
Definition: packet.h:54
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:518
vlib_node_registration_t l2input_node
(constructor) VLIB_REGISTER_NODE (l2input_node)
Definition: l2_input.c:472
#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
static_always_inline u8 * l2fib_swif_seq_num(u32 sw_if_index)
Definition: l2_fib.h:413
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:983
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:175
#define L2_FLOOD_MEMBER_BVI
Definition: l2_bd.h:42
u32 * output_node_index_vec
Definition: l2_output.h:62
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:813
format_function_t format_vnet_sw_if_index_name
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:662
#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:438
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
static uword ethernet_address_cast(u8 *a)
Definition: packet.h:65
u32 output_sw_if_index
Definition: l2_input.h:35
#define MODE_L2_BRIDGE
Definition: l2_input.h:203
#define vec_new(T, N)
Create new vector of given type and length (unspecified alignment, no header).
Definition: vec.h:306
u8 dst_address[6]
Definition: packet.h:53
void bd_add_member(l2_bridge_domain_t *bd_config, l2_flood_member_t *member)
Definition: l2_bd.c:136
int i32
Definition: types.h:81
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:171
#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 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:565
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
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:676
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:459
static_always_inline u8 * l2fib_valid_swif_seq_num(u32 sw_if_index)
Definition: l2_fib.h:420
vnet_main_t * vnet_main
Definition: l2_input.h:73
struct _unformat_input_t unformat_input_t
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:195
#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:66
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:921
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:384
#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:1158
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:1145
#define UNFORMAT_END_OF_INPUT
Definition: format.h:143
u16 n_vectors
Definition: node.h:344
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:82
vlib_main_t * vm
Definition: buffer.c:283
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:336
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:207
void ethernet_register_l2_input(vlib_main_t *vm, u32 node_index)
Definition: node.c:1386
#define VLIB_BUFFER_IS_TRACED
Definition: buffer.h:93
#define clib_memcpy(a, b, c)
Definition: string.h:75
#define VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT
#define ETHERNET_INTERFACE_FLAG_ACCEPT_ALL
Definition: ethernet.h:119
#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:351
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:456
#define L2_BD_ID_MAX
Definition: l2_bd.h:97
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:171
#define ASSERT(truth)
unsigned int u32
Definition: types.h:88
#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:1035
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:259
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:204
clib_error_t * l2_init(vlib_main_t *vm)
Definition: l2_input.c:1164
static uword l2input_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: l2_input.c:463
u64 uword
Definition: types.h:112
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:534
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:495
Definition: defs.h:47
unsigned short u16
Definition: types.h:57
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:1027
u32 feature_bitmap
Definition: l2_bd.h:56
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
unsigned char u8
Definition: types.h:56
static char * l2input_error_strings[]
Definition: l2_input.c:127
vnet_sw_interface_t * sw_interfaces
Definition: interface.h:663
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:326
u32 l2fib_del_entry(u8 *mac, u32 bd_index)
Delete an entry from the l2fib.
Definition: l2_fib.c:671
#define VLIB_NODE_FUNCTION_MULTIARCH(node, fn)
Definition: node.h:158
#define MODE_ERROR_BVI_DEF
Definition: l2_input.h:208
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:143
u8 data[0]
Packet data.
Definition: buffer.h:159
#define MODE_L2_CLASSIFY
Definition: l2_input.h:205
#define vec_foreach(var, vec)
Vector iterator.
#define get_u16(addr)
u16 flags
Copy of main node flags.
Definition: node.h:450
u32 sw_if_index
Definition: l2_bd.h:46
l2input_next_t
Definition: l2_input.c:133
#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:481
bd_main_t bd_main
Definition: l2_bd.c:44
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:67
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:75
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:680
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:768
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:169
#define MODE_L3
Definition: l2_input.h:202
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:366
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128