FD.io VPP  v17.07-30-g839fa73
Vector Packet Processing
node.c
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1 /*
2  * Copyright (c) 2015 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 /*
16  * ethernet_node.c: ethernet packet processing
17  *
18  * Copyright (c) 2008 Eliot Dresselhaus
19  *
20  * Permission is hereby granted, free of charge, to any person obtaining
21  * a copy of this software and associated documentation files (the
22  * "Software"), to deal in the Software without restriction, including
23  * without limitation the rights to use, copy, modify, merge, publish,
24  * distribute, sublicense, and/or sell copies of the Software, and to
25  * permit persons to whom the Software is furnished to do so, subject to
26  * the following conditions:
27  *
28  * The above copyright notice and this permission notice shall be
29  * included in all copies or substantial portions of the Software.
30  *
31  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
38  */
39 
40 #include <vlib/vlib.h>
41 #include <vnet/pg/pg.h>
42 #include <vnet/ethernet/ethernet.h>
43 #include <vppinfra/sparse_vec.h>
44 #include <vnet/l2/l2_bvi.h>
45 
46 
47 #define foreach_ethernet_input_next \
48  _ (PUNT, "error-punt") \
49  _ (DROP, "error-drop") \
50  _ (LLC, "llc-input")
51 
52 typedef enum
53 {
54 #define _(s,n) ETHERNET_INPUT_NEXT_##s,
56 #undef _
59 
60 typedef struct
61 {
62  u8 packet_data[32];
64 
65 static u8 *
66 format_ethernet_input_trace (u8 * s, va_list * va)
67 {
68  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
69  CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
71 
72  s = format (s, "%U", format_ethernet_header, t->packet_data);
73 
74  return s;
75 }
76 
78 
79 typedef enum
80 {
85 
86 
87 // Parse the ethernet header to extract vlan tags and innermost ethertype
90  vlib_buffer_t * b0,
91  u16 * type,
92  u16 * orig_type,
93  u16 * outer_id, u16 * inner_id, u32 * match_flags)
94 {
95  u8 vlan_count;
96 
97  if (variant == ETHERNET_INPUT_VARIANT_ETHERNET
98  || variant == ETHERNET_INPUT_VARIANT_NOT_L2)
99  {
100  ethernet_header_t *e0;
101 
102  e0 = (void *) (b0->data + b0->current_data);
103 
104  vnet_buffer (b0)->ethernet.start_of_ethernet_header = b0->current_data;
105 
106  vlib_buffer_advance (b0, sizeof (e0[0]));
107 
108  *type = clib_net_to_host_u16 (e0->type);
109  }
110  else if (variant == ETHERNET_INPUT_VARIANT_ETHERNET_TYPE)
111  {
112  // here when prior node was LLC/SNAP processing
113  u16 *e0;
114 
115  e0 = (void *) (b0->data + b0->current_data);
116 
117  vlib_buffer_advance (b0, sizeof (e0[0]));
118 
119  *type = clib_net_to_host_u16 (e0[0]);
120  }
121 
122  // save for distinguishing between dot1q and dot1ad later
123  *orig_type = *type;
124 
125  // default the tags to 0 (used if there is no corresponding tag)
126  *outer_id = 0;
127  *inner_id = 0;
128 
130  vlan_count = 0;
131 
132  // check for vlan encaps
133  if (ethernet_frame_is_tagged (*type))
134  {
136  u16 tag;
137 
139 
140  h0 = (void *) (b0->data + b0->current_data);
141 
142  tag = clib_net_to_host_u16 (h0->priority_cfi_and_id);
143 
144  *outer_id = tag & 0xfff;
145  if (0 == *outer_id)
146  *match_flags &= ~SUBINT_CONFIG_MATCH_1_TAG;
147 
148  *type = clib_net_to_host_u16 (h0->type);
149 
150  vlib_buffer_advance (b0, sizeof (h0[0]));
151  vlan_count = 1;
152 
153  if (*type == ETHERNET_TYPE_VLAN)
154  {
155  // Double tagged packet
157 
158  h0 = (void *) (b0->data + b0->current_data);
159 
160  tag = clib_net_to_host_u16 (h0->priority_cfi_and_id);
161 
162  *inner_id = tag & 0xfff;
163 
164  *type = clib_net_to_host_u16 (h0->type);
165 
166  vlib_buffer_advance (b0, sizeof (h0[0]));
167  vlan_count = 2;
168  if (*type == ETHERNET_TYPE_VLAN)
169  {
170  // More than double tagged packet
172 
173  vlib_buffer_advance (b0, sizeof (h0[0]));
174  vlan_count = 3; // "unknown" number, aka, 3-or-more
175  }
176  }
177  }
178  ethernet_buffer_set_vlan_count (b0, vlan_count);
179 }
180 
181 // Determine the subinterface for this packet, given the result of the
182 // vlan table lookups and vlan header parsing. Check the most specific
183 // matches first.
186  vlib_buffer_t * b0,
187  u32 match_flags,
188  main_intf_t * main_intf,
189  vlan_intf_t * vlan_intf,
190  qinq_intf_t * qinq_intf,
191  u32 * new_sw_if_index, u8 * error0, u32 * is_l2)
192 {
193  u32 matched;
194 
195  matched = eth_identify_subint (hi, b0, match_flags,
196  main_intf, vlan_intf, qinq_intf,
197  new_sw_if_index, error0, is_l2);
198 
199  if (matched)
200  {
201 
202  // Perform L3 my-mac filter
203  // A unicast packet arriving on an L3 interface must have a dmac matching the interface mac.
204  // This is required for promiscuous mode, else we will forward packets we aren't supposed to.
205  if (!(*is_l2))
206  {
207  ethernet_header_t *e0;
208  e0 =
209  (void *) (b0->data +
210  vnet_buffer (b0)->ethernet.start_of_ethernet_header);
211 
212  if (!(ethernet_address_cast (e0->dst_address)))
213  {
214  if (!eth_mac_equal ((u8 *) e0, hi->hw_address))
215  {
216  *error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
217  }
218  }
219  }
220 
221  // Check for down subinterface
222  *error0 = (*new_sw_if_index) != ~0 ? (*error0) : ETHERNET_ERROR_DOWN;
223  }
224 }
225 
228  ethernet_input_variant_t variant,
229  u32 is_l20,
230  u32 type0, vlib_buffer_t * b0, u8 * error0, u8 * next0)
231 {
232  if (PREDICT_FALSE (*error0 != ETHERNET_ERROR_NONE))
233  {
234  // some error occurred
235  *next0 = ETHERNET_INPUT_NEXT_DROP;
236  }
237  else if (is_l20)
238  {
239  *next0 = em->l2_next;
240  // record the L2 len and reset the buffer so the L2 header is preserved
241  u32 eth_start = vnet_buffer (b0)->ethernet.start_of_ethernet_header;
242  vnet_buffer (b0)->l2.l2_len = b0->current_data - eth_start;
243  ASSERT (vnet_buffer (b0)->l2.l2_len ==
246 
247  // check for common IP/MPLS ethertypes
248  }
249  else if (type0 == ETHERNET_TYPE_IP4)
250  {
251  *next0 = em->l3_next.input_next_ip4;
252  }
253  else if (type0 == ETHERNET_TYPE_IP6)
254  {
255  *next0 = em->l3_next.input_next_ip6;
256  }
257  else if (type0 == ETHERNET_TYPE_MPLS)
258  {
259  *next0 = em->l3_next.input_next_mpls;
260 
261  }
262  else if (em->redirect_l3)
263  {
264  // L3 Redirect is on, the cached common next nodes will be
265  // pointing to the redirect node, catch the uncommon types here
266  *next0 = em->redirect_l3_next;
267  }
268  else
269  {
270  // uncommon ethertype, check table
271  u32 i0;
272  i0 = sparse_vec_index (em->l3_next.input_next_by_type, type0);
273  *next0 = vec_elt (em->l3_next.input_next_by_type, i0);
274  *error0 =
275  i0 ==
276  SPARSE_VEC_INVALID_INDEX ? ETHERNET_ERROR_UNKNOWN_TYPE : *error0;
277 
278  // The table is not populated with LLC values, so check that now.
279  // If variant is variant_ethernet then we came from LLC processing. Don't
280  // go back there; drop instead using by keeping the drop/bad table result.
281  if ((type0 < 0x600) && (variant == ETHERNET_INPUT_VARIANT_ETHERNET))
282  {
283  *next0 = ETHERNET_INPUT_NEXT_LLC;
284  }
285  }
286 }
287 
290  vlib_node_runtime_t * node,
291  vlib_frame_t * from_frame,
292  ethernet_input_variant_t variant)
293 {
294  vnet_main_t *vnm = vnet_get_main ();
296  vlib_node_runtime_t *error_node;
297  u32 n_left_from, next_index, *from, *to_next;
298  u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
299  u32 thread_index = vlib_get_thread_index ();
300  u32 cached_sw_if_index = ~0;
301  u32 cached_is_l2 = 0; /* shut up gcc */
302  vnet_hw_interface_t *hi = NULL; /* used for main interface only */
303 
304  if (variant != ETHERNET_INPUT_VARIANT_ETHERNET)
305  error_node = vlib_node_get_runtime (vm, ethernet_input_node.index);
306  else
307  error_node = node;
308 
309  from = vlib_frame_vector_args (from_frame);
310  n_left_from = from_frame->n_vectors;
311 
312  if (node->flags & VLIB_NODE_FLAG_TRACE)
314  from,
315  n_left_from,
316  sizeof (from[0]),
317  sizeof (ethernet_input_trace_t));
318 
319  next_index = node->cached_next_index;
320  stats_sw_if_index = node->runtime_data[0];
321  stats_n_packets = stats_n_bytes = 0;
322 
323  while (n_left_from > 0)
324  {
325  u32 n_left_to_next;
326 
327  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
328 
329  while (n_left_from >= 4 && n_left_to_next >= 2)
330  {
331  u32 bi0, bi1;
332  vlib_buffer_t *b0, *b1;
333  u8 next0, next1, error0, error1;
334  u16 type0, orig_type0, type1, orig_type1;
335  u16 outer_id0, inner_id0, outer_id1, inner_id1;
336  u32 match_flags0, match_flags1;
337  u32 old_sw_if_index0, new_sw_if_index0, len0, old_sw_if_index1,
338  new_sw_if_index1, len1;
339  vnet_hw_interface_t *hi0, *hi1;
340  main_intf_t *main_intf0, *main_intf1;
341  vlan_intf_t *vlan_intf0, *vlan_intf1;
342  qinq_intf_t *qinq_intf0, *qinq_intf1;
343  u32 is_l20, is_l21;
344  ethernet_header_t *e0, *e1;
345 
346  /* Prefetch next iteration. */
347  {
348  vlib_buffer_t *b2, *b3;
349 
350  b2 = vlib_get_buffer (vm, from[2]);
351  b3 = vlib_get_buffer (vm, from[3]);
352 
353  vlib_prefetch_buffer_header (b2, STORE);
354  vlib_prefetch_buffer_header (b3, STORE);
355 
356  CLIB_PREFETCH (b2->data, sizeof (ethernet_header_t), LOAD);
357  CLIB_PREFETCH (b3->data, sizeof (ethernet_header_t), LOAD);
358  }
359 
360  bi0 = from[0];
361  bi1 = from[1];
362  to_next[0] = bi0;
363  to_next[1] = bi1;
364  from += 2;
365  to_next += 2;
366  n_left_to_next -= 2;
367  n_left_from -= 2;
368 
369  b0 = vlib_get_buffer (vm, bi0);
370  b1 = vlib_get_buffer (vm, bi1);
371 
372  error0 = error1 = ETHERNET_ERROR_NONE;
373  e0 = vlib_buffer_get_current (b0);
374  type0 = clib_net_to_host_u16 (e0->type);
375  e1 = vlib_buffer_get_current (b1);
376  type1 = clib_net_to_host_u16 (e1->type);
377 
378  /* Speed-path for the untagged case */
380  && !ethernet_frame_is_tagged (type0)
381  && !ethernet_frame_is_tagged (type1)))
382  {
383  main_intf_t *intf0;
384  subint_config_t *subint0;
385  u32 sw_if_index0, sw_if_index1;
386 
387  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
388  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
389  is_l20 = cached_is_l2;
390 
391  /* This is probably wholly unnecessary */
392  if (PREDICT_FALSE (sw_if_index0 != sw_if_index1))
393  goto slowpath;
394 
395  /* Now sw_if_index0 == sw_if_index1 */
396  if (PREDICT_FALSE (cached_sw_if_index != sw_if_index0))
397  {
398  cached_sw_if_index = sw_if_index0;
399  hi = vnet_get_sup_hw_interface (vnm, sw_if_index0);
400  intf0 = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
401  subint0 = &intf0->untagged_subint;
402  cached_is_l2 = is_l20 = subint0->flags & SUBINT_CONFIG_L2;
403  }
404 
405  vnet_buffer (b0)->ethernet.start_of_ethernet_header =
406  b0->current_data;
407  vnet_buffer (b1)->ethernet.start_of_ethernet_header =
408  b1->current_data;
409 
410  if (PREDICT_TRUE (is_l20 != 0))
411  {
412  next0 = em->l2_next;
413  vnet_buffer (b0)->l2.l2_len = sizeof (ethernet_header_t);
414  next1 = em->l2_next;
415  vnet_buffer (b1)->l2.l2_len = sizeof (ethernet_header_t);
416  }
417  else
418  {
419  if (!ethernet_address_cast (e0->dst_address) &&
420  (hi->hw_address != 0) &&
421  !eth_mac_equal ((u8 *) e0, hi->hw_address))
422  error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
423  if (!ethernet_address_cast (e1->dst_address) &&
424  (hi->hw_address != 0) &&
425  !eth_mac_equal ((u8 *) e1, hi->hw_address))
426  error1 = ETHERNET_ERROR_L3_MAC_MISMATCH;
427  determine_next_node (em, variant, 0, type0, b0,
428  &error0, &next0);
429  vlib_buffer_advance (b0, sizeof (ethernet_header_t));
430  determine_next_node (em, variant, 0, type1, b1,
431  &error1, &next1);
432  vlib_buffer_advance (b1, sizeof (ethernet_header_t));
433  }
434  goto ship_it01;
435  }
436 
437  /* Slow-path for the tagged case */
438  slowpath:
439  parse_header (variant,
440  b0,
441  &type0,
442  &orig_type0, &outer_id0, &inner_id0, &match_flags0);
443 
444  parse_header (variant,
445  b1,
446  &type1,
447  &orig_type1, &outer_id1, &inner_id1, &match_flags1);
448 
449  old_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
450  old_sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
451 
453  vnm,
454  old_sw_if_index0,
455  orig_type0,
456  outer_id0,
457  inner_id0,
458  &hi0,
459  &main_intf0, &vlan_intf0, &qinq_intf0);
460 
462  vnm,
463  old_sw_if_index1,
464  orig_type1,
465  outer_id1,
466  inner_id1,
467  &hi1,
468  &main_intf1, &vlan_intf1, &qinq_intf1);
469 
470  identify_subint (hi0,
471  b0,
472  match_flags0,
473  main_intf0,
474  vlan_intf0,
475  qinq_intf0, &new_sw_if_index0, &error0, &is_l20);
476 
477  identify_subint (hi1,
478  b1,
479  match_flags1,
480  main_intf1,
481  vlan_intf1,
482  qinq_intf1, &new_sw_if_index1, &error1, &is_l21);
483 
484  // Save RX sw_if_index for later nodes
485  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
486  error0 !=
487  ETHERNET_ERROR_NONE ? old_sw_if_index0 : new_sw_if_index0;
488  vnet_buffer (b1)->sw_if_index[VLIB_RX] =
489  error1 !=
490  ETHERNET_ERROR_NONE ? old_sw_if_index1 : new_sw_if_index1;
491 
492  // Check if there is a stat to take (valid and non-main sw_if_index for pkt 0 or pkt 1)
493  if (((new_sw_if_index0 != ~0)
494  && (new_sw_if_index0 != old_sw_if_index0))
495  || ((new_sw_if_index1 != ~0)
496  && (new_sw_if_index1 != old_sw_if_index1)))
497  {
498 
499  len0 = vlib_buffer_length_in_chain (vm, b0) + b0->current_data
500  - vnet_buffer (b0)->ethernet.start_of_ethernet_header;
501  len1 = vlib_buffer_length_in_chain (vm, b1) + b1->current_data
502  - vnet_buffer (b1)->ethernet.start_of_ethernet_header;
503 
504  stats_n_packets += 2;
505  stats_n_bytes += len0 + len1;
506 
507  if (PREDICT_FALSE
508  (!(new_sw_if_index0 == stats_sw_if_index
509  && new_sw_if_index1 == stats_sw_if_index)))
510  {
511  stats_n_packets -= 2;
512  stats_n_bytes -= len0 + len1;
513 
514  if (new_sw_if_index0 != old_sw_if_index0
515  && new_sw_if_index0 != ~0)
517  interface_main.combined_sw_if_counters
518  +
520  thread_index,
521  new_sw_if_index0, 1,
522  len0);
523  if (new_sw_if_index1 != old_sw_if_index1
524  && new_sw_if_index1 != ~0)
526  interface_main.combined_sw_if_counters
527  +
529  thread_index,
530  new_sw_if_index1, 1,
531  len1);
532 
533  if (new_sw_if_index0 == new_sw_if_index1)
534  {
535  if (stats_n_packets > 0)
536  {
540  thread_index,
541  stats_sw_if_index,
542  stats_n_packets, stats_n_bytes);
543  stats_n_packets = stats_n_bytes = 0;
544  }
545  stats_sw_if_index = new_sw_if_index0;
546  }
547  }
548  }
549 
550  if (variant == ETHERNET_INPUT_VARIANT_NOT_L2)
551  is_l20 = is_l21 = 0;
552 
553  determine_next_node (em, variant, is_l20, type0, b0, &error0,
554  &next0);
555  determine_next_node (em, variant, is_l21, type1, b1, &error1,
556  &next1);
557 
558  ship_it01:
559  b0->error = error_node->errors[error0];
560  b1->error = error_node->errors[error1];
561 
562  // verify speculative enqueue
563  vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
564  n_left_to_next, bi0, bi1, next0,
565  next1);
566  }
567 
568  while (n_left_from > 0 && n_left_to_next > 0)
569  {
570  u32 bi0;
571  vlib_buffer_t *b0;
572  u8 error0, next0;
573  u16 type0, orig_type0;
574  u16 outer_id0, inner_id0;
575  u32 match_flags0;
576  u32 old_sw_if_index0, new_sw_if_index0, len0;
577  vnet_hw_interface_t *hi0;
578  main_intf_t *main_intf0;
579  vlan_intf_t *vlan_intf0;
580  qinq_intf_t *qinq_intf0;
581  ethernet_header_t *e0;
582  u32 is_l20;
583 
584  // Prefetch next iteration
585  if (n_left_from > 1)
586  {
587  vlib_buffer_t *p2;
588 
589  p2 = vlib_get_buffer (vm, from[1]);
590  vlib_prefetch_buffer_header (p2, STORE);
592  }
593 
594  bi0 = from[0];
595  to_next[0] = bi0;
596  from += 1;
597  to_next += 1;
598  n_left_from -= 1;
599  n_left_to_next -= 1;
600 
601  b0 = vlib_get_buffer (vm, bi0);
602 
603  error0 = ETHERNET_ERROR_NONE;
604  e0 = vlib_buffer_get_current (b0);
605  type0 = clib_net_to_host_u16 (e0->type);
606 
607  /* Speed-path for the untagged case */
609  && !ethernet_frame_is_tagged (type0)))
610  {
611  main_intf_t *intf0;
612  subint_config_t *subint0;
613  u32 sw_if_index0;
614 
615  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
616  is_l20 = cached_is_l2;
617 
618  if (PREDICT_FALSE (cached_sw_if_index != sw_if_index0))
619  {
620  cached_sw_if_index = sw_if_index0;
621  hi = vnet_get_sup_hw_interface (vnm, sw_if_index0);
622  intf0 = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
623  subint0 = &intf0->untagged_subint;
624  cached_is_l2 = is_l20 = subint0->flags & SUBINT_CONFIG_L2;
625  }
626 
627  vnet_buffer (b0)->ethernet.start_of_ethernet_header =
628  b0->current_data;
629 
630  if (PREDICT_TRUE (is_l20 != 0))
631  {
632  next0 = em->l2_next;
633  vnet_buffer (b0)->l2.l2_len = sizeof (ethernet_header_t);
634  }
635  else
636  {
637  if (!ethernet_address_cast (e0->dst_address) &&
638  (hi->hw_address != 0) &&
639  !eth_mac_equal ((u8 *) e0, hi->hw_address))
640  error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
641  determine_next_node (em, variant, 0, type0, b0,
642  &error0, &next0);
643  vlib_buffer_advance (b0, sizeof (ethernet_header_t));
644  }
645  goto ship_it0;
646  }
647 
648  /* Slow-path for the tagged case */
649  parse_header (variant,
650  b0,
651  &type0,
652  &orig_type0, &outer_id0, &inner_id0, &match_flags0);
653 
654  old_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
655 
657  vnm,
658  old_sw_if_index0,
659  orig_type0,
660  outer_id0,
661  inner_id0,
662  &hi0,
663  &main_intf0, &vlan_intf0, &qinq_intf0);
664 
665  identify_subint (hi0,
666  b0,
667  match_flags0,
668  main_intf0,
669  vlan_intf0,
670  qinq_intf0, &new_sw_if_index0, &error0, &is_l20);
671 
672  // Save RX sw_if_index for later nodes
673  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
674  error0 !=
675  ETHERNET_ERROR_NONE ? old_sw_if_index0 : new_sw_if_index0;
676 
677  // Increment subinterface stats
678  // Note that interface-level counters have already been incremented
679  // prior to calling this function. Thus only subinterface counters
680  // are incremented here.
681  //
682  // Interface level counters include packets received on the main
683  // interface and all subinterfaces. Subinterface level counters
684  // include only those packets received on that subinterface
685  // Increment stats if the subint is valid and it is not the main intf
686  if ((new_sw_if_index0 != ~0)
687  && (new_sw_if_index0 != old_sw_if_index0))
688  {
689 
690  len0 = vlib_buffer_length_in_chain (vm, b0) + b0->current_data
691  - vnet_buffer (b0)->ethernet.start_of_ethernet_header;
692 
693  stats_n_packets += 1;
694  stats_n_bytes += len0;
695 
696  // Batch stat increments from the same subinterface so counters
697  // don't need to be incremented for every packet.
698  if (PREDICT_FALSE (new_sw_if_index0 != stats_sw_if_index))
699  {
700  stats_n_packets -= 1;
701  stats_n_bytes -= len0;
702 
703  if (new_sw_if_index0 != ~0)
707  thread_index, new_sw_if_index0, 1, len0);
708  if (stats_n_packets > 0)
709  {
713  thread_index,
714  stats_sw_if_index, stats_n_packets, stats_n_bytes);
715  stats_n_packets = stats_n_bytes = 0;
716  }
717  stats_sw_if_index = new_sw_if_index0;
718  }
719  }
720 
721  if (variant == ETHERNET_INPUT_VARIANT_NOT_L2)
722  is_l20 = 0;
723 
724  determine_next_node (em, variant, is_l20, type0, b0, &error0,
725  &next0);
726 
727  ship_it0:
728  b0->error = error_node->errors[error0];
729 
730  // verify speculative enqueue
731  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
732  to_next, n_left_to_next,
733  bi0, next0);
734  }
735 
736  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
737  }
738 
739  // Increment any remaining batched stats
740  if (stats_n_packets > 0)
741  {
745  thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
746  node->runtime_data[0] = stats_sw_if_index;
747  }
748 
749  return from_frame->n_vectors;
750 }
751 
752 static uword
754  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
755 {
756  return ethernet_input_inline (vm, node, from_frame,
758 }
759 
760 static uword
762  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
763 {
764  return ethernet_input_inline (vm, node, from_frame,
766 }
767 
768 static uword
770  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
771 {
772  return ethernet_input_inline (vm, node, from_frame,
774 }
775 
776 
777 // Return the subinterface config struct for the given sw_if_index
778 // Also return via parameter the appropriate match flags for the
779 // configured number of tags.
780 // On error (unsupported or not ethernet) return 0.
781 static subint_config_t *
783  u32 sw_if_index,
784  u32 * flags, u32 * unsupported)
785 {
789  main_intf_t *main_intf;
790  vlan_table_t *vlan_table;
791  qinq_table_t *qinq_table;
792  subint_config_t *subint = 0;
793 
794  hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
795 
796  if (!hi || (hi->hw_class_index != ethernet_hw_interface_class.index))
797  {
798  *unsupported = 0;
799  goto done; // non-ethernet interface
800  }
801 
802  // ensure there's an entry for the main intf (shouldn't really be necessary)
804  main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
805 
806  // Locate the subint for the given ethernet config
807  si = vnet_get_sw_interface (vnm, sw_if_index);
808 
809  if (si->sub.eth.flags.default_sub)
810  {
811  subint = &main_intf->default_subint;
812  *flags = SUBINT_CONFIG_MATCH_0_TAG |
815  }
816  else if ((si->sub.eth.flags.no_tags) || (si->sub.eth.raw_flags == 0))
817  {
818  // if no flags are set then this is a main interface
819  // so treat as untagged
820  subint = &main_intf->untagged_subint;
821  *flags = SUBINT_CONFIG_MATCH_0_TAG;
822  }
823  else
824  {
825  // one or two tags
826  // first get the vlan table
827  if (si->sub.eth.flags.dot1ad)
828  {
829  if (main_intf->dot1ad_vlans == 0)
830  {
831  // Allocate a vlan table from the pool
832  pool_get (em->vlan_pool, vlan_table);
833  main_intf->dot1ad_vlans = vlan_table - em->vlan_pool;
834  }
835  else
836  {
837  // Get ptr to existing vlan table
838  vlan_table =
839  vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
840  }
841  }
842  else
843  { // dot1q
844  if (main_intf->dot1q_vlans == 0)
845  {
846  // Allocate a vlan table from the pool
847  pool_get (em->vlan_pool, vlan_table);
848  main_intf->dot1q_vlans = vlan_table - em->vlan_pool;
849  }
850  else
851  {
852  // Get ptr to existing vlan table
853  vlan_table =
854  vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
855  }
856  }
857 
858  if (si->sub.eth.flags.one_tag)
859  {
860  *flags = si->sub.eth.flags.exact_match ?
864 
865  if (si->sub.eth.flags.outer_vlan_id_any)
866  {
867  // not implemented yet
868  *unsupported = 1;
869  goto done;
870  }
871  else
872  {
873  // a single vlan, a common case
874  subint =
875  &vlan_table->vlans[si->sub.eth.
876  outer_vlan_id].single_tag_subint;
877  }
878 
879  }
880  else
881  {
882  // Two tags
883  *flags = si->sub.eth.flags.exact_match ?
886 
887  if (si->sub.eth.flags.outer_vlan_id_any
888  && si->sub.eth.flags.inner_vlan_id_any)
889  {
890  // not implemented yet
891  *unsupported = 1;
892  goto done;
893  }
894 
895  if (si->sub.eth.flags.inner_vlan_id_any)
896  {
897  // a specific outer and "any" inner
898  // don't need a qinq table for this
899  subint =
900  &vlan_table->vlans[si->sub.eth.
901  outer_vlan_id].inner_any_subint;
902  if (si->sub.eth.flags.exact_match)
903  {
904  *flags = SUBINT_CONFIG_MATCH_2_TAG;
905  }
906  else
907  {
908  *flags = SUBINT_CONFIG_MATCH_2_TAG |
910  }
911  }
912  else
913  {
914  // a specific outer + specifc innner vlan id, a common case
915 
916  // get the qinq table
917  if (vlan_table->vlans[si->sub.eth.outer_vlan_id].qinqs == 0)
918  {
919  // Allocate a qinq table from the pool
920  pool_get (em->qinq_pool, qinq_table);
921  vlan_table->vlans[si->sub.eth.outer_vlan_id].qinqs =
922  qinq_table - em->qinq_pool;
923  }
924  else
925  {
926  // Get ptr to existing qinq table
927  qinq_table =
929  vlan_table->vlans[si->sub.
930  eth.outer_vlan_id].
931  qinqs);
932  }
933  subint = &qinq_table->vlans[si->sub.eth.inner_vlan_id].subint;
934  }
935  }
936  }
937 
938 done:
939  return subint;
940 }
941 
942 clib_error_t *
944 {
945  subint_config_t *subint;
946  u32 dummy_flags;
947  u32 dummy_unsup;
948  clib_error_t *error = 0;
949 
950  // Find the config for this subinterface
951  subint =
952  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
953  &dummy_unsup);
954 
955  if (subint == 0)
956  {
957  // not implemented yet or not ethernet
958  goto done;
959  }
960 
961  subint->sw_if_index =
962  ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? sw_if_index : ~0);
963 
964 done:
965  return error;
966 }
967 
969 
970 
971 // Set the L2/L3 mode for the subinterface
972 void
974 {
975  subint_config_t *subint;
976  u32 dummy_flags;
977  u32 dummy_unsup;
978  int is_port;
979  vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, sw_if_index);
980 
981  is_port = !(sw->type == VNET_SW_INTERFACE_TYPE_SUB);
982 
983  // Find the config for this subinterface
984  subint =
985  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
986  &dummy_unsup);
987 
988  if (subint == 0)
989  {
990  // unimplemented or not ethernet
991  goto done;
992  }
993 
994  // Double check that the config we found is for our interface (or the interface is down)
995  ASSERT ((subint->sw_if_index == sw_if_index) | (subint->sw_if_index == ~0));
996 
997  if (l2)
998  {
999  subint->flags |= SUBINT_CONFIG_L2;
1000  if (is_port)
1001  subint->flags |=
1004  }
1005  else
1006  {
1007  subint->flags &= ~SUBINT_CONFIG_L2;
1008  if (is_port)
1009  subint->flags &=
1012  }
1013 
1014 done:
1015  return;
1016 }
1017 
1018 /*
1019  * Set the L2/L3 mode for the subinterface regardless of port
1020  */
1021 void
1023  u32 sw_if_index, u32 l2)
1024 {
1025  subint_config_t *subint;
1026  u32 dummy_flags;
1027  u32 dummy_unsup;
1028 
1029  /* Find the config for this subinterface */
1030  subint =
1031  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
1032  &dummy_unsup);
1033 
1034  if (subint == 0)
1035  {
1036  /* unimplemented or not ethernet */
1037  goto done;
1038  }
1039 
1040  /*
1041  * Double check that the config we found is for our interface (or the
1042  * interface is down)
1043  */
1044  ASSERT ((subint->sw_if_index == sw_if_index) | (subint->sw_if_index == ~0));
1045 
1046  if (l2)
1047  {
1048  subint->flags |= SUBINT_CONFIG_L2;
1049  }
1050  else
1051  {
1052  subint->flags &= ~SUBINT_CONFIG_L2;
1053  }
1054 
1055 done:
1056  return;
1057 }
1058 
1059 static clib_error_t *
1061  u32 sw_if_index, u32 is_create)
1062 {
1063  clib_error_t *error = 0;
1064  subint_config_t *subint;
1065  u32 match_flags;
1066  u32 unsupported = 0;
1067 
1068  // Find the config for this subinterface
1069  subint =
1070  ethernet_sw_interface_get_config (vnm, sw_if_index, &match_flags,
1071  &unsupported);
1072 
1073  if (subint == 0)
1074  {
1075  // not implemented yet or not ethernet
1076  if (unsupported)
1077  {
1078  // this is the NYI case
1079  error = clib_error_return (0, "not implemented yet");
1080  }
1081  goto done;
1082  }
1083 
1084  if (!is_create)
1085  {
1086  subint->flags = 0;
1087  return error;
1088  }
1089 
1090  // Initialize the subint
1091  if (subint->flags & SUBINT_CONFIG_VALID)
1092  {
1093  // Error vlan already in use
1094  error = clib_error_return (0, "vlan is already in use");
1095  }
1096  else
1097  {
1098  // Note that config is L3 by defaulty
1099  subint->flags = SUBINT_CONFIG_VALID | match_flags;
1100  subint->sw_if_index = ~0; // because interfaces are initially down
1101  }
1102 
1103 done:
1104  return error;
1105 }
1106 
1108 
1109 static char *ethernet_error_strings[] = {
1110 #define ethernet_error(n,c,s) s,
1111 #include "error.def"
1112 #undef ethernet_error
1113 };
1114 
1115 /* *INDENT-OFF* */
1117  .function = ethernet_input,
1118  .name = "ethernet-input",
1119  /* Takes a vector of packets. */
1120  .vector_size = sizeof (u32),
1121  .n_errors = ETHERNET_N_ERROR,
1122  .error_strings = ethernet_error_strings,
1123  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1124  .next_nodes = {
1125 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1127 #undef _
1128  },
1129  .format_buffer = format_ethernet_header_with_length,
1130  .format_trace = format_ethernet_input_trace,
1131  .unformat_buffer = unformat_ethernet_header,
1132 };
1133 /* *INDENT-ON* */
1134 
1135 /* *INDENT-OFF* */
1137 /* *INDENT-ON* */
1138 
1139 /* *INDENT-OFF* */
1141  .function = ethernet_input_type,
1142  .name = "ethernet-input-type",
1143  /* Takes a vector of packets. */
1144  .vector_size = sizeof (u32),
1145  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1146  .next_nodes = {
1147 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1149 #undef _
1150  },
1151 };
1152 /* *INDENT-ON* */
1153 
1154 /* *INDENT-OFF* */
1156 /* *INDENT-ON* */
1157 
1158 /* *INDENT-OFF* */
1160  .function = ethernet_input_not_l2,
1161  .name = "ethernet-input-not-l2",
1162  /* Takes a vector of packets. */
1163  .vector_size = sizeof (u32),
1164  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1165  .next_nodes = {
1166 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1168 #undef _
1169  },
1170 };
1171 /* *INDENT-ON* */
1172 
1173 
1174 /* *INDENT-OFF* */
1177 /* *INDENT-ON* */
1178 
1179 
1180 void
1182  vnet_hw_interface_t * hi, u32 enable)
1183 {
1184  // Insure all packets go to ethernet-input (i.e. untagged ipv4 packets
1185  // don't go directly to ip4-input)
1187  (vnm, hi->hw_if_index, enable ? ethernet_input_node.index : ~0);
1188 }
1189 
1190 
1191 /*
1192  * Initialization and registration for the next_by_ethernet structure
1193  */
1194 
1195 clib_error_t *
1197 {
1199  ( /* elt bytes */ sizeof (l3_next->input_next_by_type[0]),
1200  /* bits in index */ BITS (((ethernet_header_t *) 0)->type));
1201 
1203  ETHERNET_INPUT_NEXT_DROP);
1205  ETHERNET_INPUT_NEXT_PUNT);
1206  l3_next->sparse_index_by_input_next_index[ETHERNET_INPUT_NEXT_DROP] =
1208  l3_next->sparse_index_by_input_next_index[ETHERNET_INPUT_NEXT_PUNT] =
1210 
1211  /*
1212  * Make sure we don't wipe out an ethernet registration by mistake
1213  * Can happen if init function ordering constraints are missing.
1214  */
1215  if (CLIB_DEBUG > 0)
1216  {
1219  }
1220 
1221  return 0;
1222 }
1223 
1224 // Add an ethertype -> next index mapping to the structure
1225 clib_error_t *
1227  u32 ethertype, u32 next_index)
1228 {
1229  u32 i;
1230  u16 *n;
1232 
1233  if (CLIB_DEBUG > 0)
1234  {
1237  }
1238 
1239  /* Setup ethernet type -> next index sparse vector mapping. */
1240  n = sparse_vec_validate (l3_next->input_next_by_type, ethertype);
1241  n[0] = next_index;
1242 
1243  /* Rebuild next index -> sparse index inverse mapping when sparse vector
1244  is updated. */
1245  vec_validate (l3_next->sparse_index_by_input_next_index, next_index);
1246  for (i = 1; i < vec_len (l3_next->input_next_by_type); i++)
1247  l3_next->
1248  sparse_index_by_input_next_index[l3_next->input_next_by_type[i]] = i;
1249 
1250  // do not allow the cached next index's to be updated if L3
1251  // redirect is enabled, as it will have overwritten them
1252  if (!em->redirect_l3)
1253  {
1254  // Cache common ethertypes directly
1255  if (ethertype == ETHERNET_TYPE_IP4)
1256  {
1257  l3_next->input_next_ip4 = next_index;
1258  }
1259  else if (ethertype == ETHERNET_TYPE_IP6)
1260  {
1261  l3_next->input_next_ip6 = next_index;
1262  }
1263  else if (ethertype == ETHERNET_TYPE_MPLS)
1264  {
1265  l3_next->input_next_mpls = next_index;
1266  }
1267  }
1268  return 0;
1269 }
1270 
1271 
1272 static clib_error_t *
1274 {
1276  __attribute__ ((unused)) vlan_table_t *invalid_vlan_table;
1277  __attribute__ ((unused)) qinq_table_t *invalid_qinq_table;
1278 
1282 
1284 
1285  // Initialize pools and vector for vlan parsing
1286  vec_validate (em->main_intfs, 10); // 10 main interfaces
1287  pool_alloc (em->vlan_pool, 10);
1288  pool_alloc (em->qinq_pool, 1);
1289 
1290  // The first vlan pool will always be reserved for an invalid table
1291  pool_get (em->vlan_pool, invalid_vlan_table); // first id = 0
1292  // The first qinq pool will always be reserved for an invalid table
1293  pool_get (em->qinq_pool, invalid_qinq_table); // first id = 0
1294 
1295  return 0;
1296 }
1297 
1299 
1300 void
1302  ethernet_type_t type, u32 node_index)
1303 {
1306  u32 i;
1307 
1308  {
1310  if (error)
1311  clib_error_report (error);
1312  }
1313 
1314  ti = ethernet_get_type_info (em, type);
1315  ti->node_index = node_index;
1316  ti->next_index = vlib_node_add_next (vm,
1317  ethernet_input_node.index, node_index);
1318  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1319  ASSERT (i == ti->next_index);
1320 
1321  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1322  ASSERT (i == ti->next_index);
1323 
1324  // Add the L3 node for this ethertype to the next nodes structure
1325  next_by_ethertype_register (&em->l3_next, type, ti->next_index);
1326 
1327  // Call the registration functions for other nodes that want a mapping
1328  l2bvi_register_input_type (vm, type, node_index);
1329 }
1330 
1331 void
1333 {
1335  u32 i;
1336 
1337  em->l2_next =
1338  vlib_node_add_next (vm, ethernet_input_node.index, node_index);
1339 
1340  /*
1341  * Even if we never use these arcs, we have to align the next indices...
1342  */
1343  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1344 
1345  ASSERT (i == em->l2_next);
1346 
1347  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1348  ASSERT (i == em->l2_next);
1349 }
1350 
1351 // Register a next node for L3 redirect, and enable L3 redirect
1352 void
1354 {
1356  u32 i;
1357 
1358  em->redirect_l3 = 1;
1360  ethernet_input_node.index,
1361  node_index);
1362  /*
1363  * Change the cached next nodes to the redirect node
1364  */
1368 
1369  /*
1370  * Even if we never use these arcs, we have to align the next indices...
1371  */
1372  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1373 
1374  ASSERT (i == em->redirect_l3_next);
1375 
1376  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1377 
1378  ASSERT (i == em->redirect_l3_next);
1379 }
1380 
1381 /*
1382  * fd.io coding-style-patch-verification: ON
1383  *
1384  * Local Variables:
1385  * eval: (c-set-style "gnu")
1386  * End:
1387  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:436
subint_config_t subint
Definition: ethernet.h:204
vmrglw vmrglh hi
static_always_inline void identify_subint(vnet_hw_interface_t *hi, vlib_buffer_t *b0, u32 match_flags, main_intf_t *main_intf, vlan_intf_t *vlan_intf, qinq_intf_t *qinq_intf, u32 *new_sw_if_index, u8 *error0, u32 *is_l2)
Definition: node.c:185
static_always_inline uword ethernet_input_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, ethernet_input_variant_t variant)
Definition: node.c:289
sll srl srl sll sra u16x4 i
Definition: vector_sse2.h:337
#define CLIB_UNUSED(x)
Definition: clib.h:79
static void vlib_increment_combined_counter(vlib_combined_counter_main_t *cm, u32 thread_index, u32 index, u64 n_packets, u64 n_bytes)
Increment a combined counter.
Definition: counter.h:211
u8 runtime_data[0]
Function dependent node-runtime data.
Definition: node.h:468
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
#define pool_alloc(P, N)
Allocate N more free elements to pool (unspecified alignment).
Definition: pool.h:274
vnet_interface_main_t interface_main
Definition: vnet.h:56
#define PREDICT_TRUE(x)
Definition: clib.h:98
int vnet_hw_interface_rx_redirect_to_node(vnet_main_t *vnm, u32 hw_if_index, u32 node_index)
Definition: interface.c:1121
void ethernet_register_l2_input(vlib_main_t *vm, u32 node_index)
Definition: node.c:1332
#define NULL
Definition: clib.h:55
ethernet_type_t
Definition: packet.h:43
#define SUBINT_CONFIG_MATCH_0_TAG
Definition: ethernet.h:166
#define ethernet_buffer_header_size(b)
Determine the size of the Ethernet headers of the current frame in the buffer.
Definition: ethernet.h:390
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 subint_config_t * ethernet_sw_interface_get_config(vnet_main_t *vnm, u32 sw_if_index, u32 *flags, u32 *unsupported)
Definition: node.c:782
ethernet_input_variant_t
Definition: node.c:79
struct _vlib_node_registration vlib_node_registration_t
main_intf_t * main_intfs
Definition: ethernet.h:252
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
subint_config_t inner_any_subint
Definition: ethernet.h:193
u8 packet_data[32]
Definition: node.c:62
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:419
static uword vlib_buffer_length_in_chain(vlib_main_t *vm, vlib_buffer_t *b)
Get length in bytes of the buffer chain.
Definition: buffer_funcs.h:100
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:200
static uword vlib_node_add_next(vlib_main_t *vm, uword node, uword next_node)
Definition: node_funcs.h:1081
static clib_error_t * ethernet_sw_interface_add_del(vnet_main_t *vnm, u32 sw_if_index, u32 is_create)
Definition: node.c:1060
vlib_node_registration_t ethernet_input_node
(constructor) VLIB_REGISTER_NODE (ethernet_input_node)
Definition: node.c:77
ethernet_main_t ethernet_main
Definition: ethernet.h:273
i16 current_data
signed offset in data[], pre_data[] that we are currently processing.
Definition: buffer.h:67
#define static_always_inline
Definition: clib.h:85
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
static uword ethernet_address_cast(u8 *a)
Definition: packet.h:65
clib_error_t * next_by_ethertype_init(next_by_ethertype_t *l3_next)
Definition: node.c:1196
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:653
u8 dst_address[6]
Definition: packet.h:53
#define sparse_vec_validate(v, i)
Definition: sparse_vec.h:214
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:164
subint_config_t default_subint
Definition: ethernet.h:185
#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
#define vlib_call_init_function(vm, x)
Definition: init.h:162
static char * ethernet_error_strings[]
Definition: node.c:1109
ethernet_input_next_t
Definition: node.c:52
void ethernet_set_rx_redirect(vnet_main_t *vnm, vnet_hw_interface_t *hi, u32 enable)
static clib_error_t * ethernet_input_init(vlib_main_t *vm)
Definition: node.c:1273
u16 dot1q_vlans
Definition: ethernet.h:186
subint_config_t single_tag_subint
Definition: ethernet.h:192
vnet_sub_interface_t sub
Definition: interface.h:596
u32 * sparse_index_by_input_next_index
Definition: ethernet.h:220
static ethernet_type_info_t * ethernet_get_type_info(ethernet_main_t *em, ethernet_type_t type)
Definition: ethernet.h:276
clib_error_t * ethernet_sw_interface_up_down(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: node.c:943
static uword ethernet_input_not_l2(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:769
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:188
static vlib_node_registration_t ethernet_input_type_node
(constructor) VLIB_REGISTER_NODE (ethernet_input_type_node)
Definition: node.c:1140
#define PREDICT_FALSE(x)
Definition: clib.h:97
#define ethernet_buffer_set_vlan_count(b, v)
Sets the number of VLAN headers in the current Ethernet frame in the buffer.
Definition: ethernet.h:363
u16 dot1ad_vlans
Definition: ethernet.h:187
#define vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next, n_left_to_next, bi0, bi1, next0, next1)
Finish enqueueing two buffers forward in the graph.
Definition: buffer_node.h:70
#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:216
#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:366
#define SUBINT_CONFIG_MATCH_3_TAG
Definition: ethernet.h:169
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:113
vnet_hw_interface_class_t ethernet_hw_interface_class
u8 next_by_ethertype_register_called
Definition: ethernet.h:264
subint_config_t untagged_subint
Definition: ethernet.h:184
u8 * format_ethernet_header_with_length(u8 *s, va_list *args)
Definition: format.c:91
#define SUBINT_CONFIG_VALID
Definition: ethernet.h:170
qinq_intf_t vlans[ETHERNET_N_VLAN]
Definition: ethernet.h:209
u16 n_vectors
Definition: node.h:345
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:185
VNET_SW_INTERFACE_ADD_DEL_FUNCTION(ethernet_sw_interface_add_del)
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:82
static uword ethernet_input_type(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:761
static vlib_node_runtime_t * vlib_node_get_runtime(vlib_main_t *vm, u32 node_index)
Get node runtime by node index.
Definition: node_funcs.h:88
#define SUBINT_CONFIG_MATCH_1_TAG
Definition: ethernet.h:167
static_always_inline void parse_header(ethernet_input_variant_t variant, vlib_buffer_t *b0, u16 *type, u16 *orig_type, u16 *outer_id, u16 *inner_id, u32 *match_flags)
Definition: node.c:89
static void eth_vlan_table_lookups(ethernet_main_t *em, vnet_main_t *vnm, u32 port_sw_if_index0, u16 first_ethertype, u16 outer_id, u16 inner_id, vnet_hw_interface_t **hi, main_intf_t **main_intf, vlan_intf_t **vlan_intf, qinq_intf_t **qinq_intf)
Definition: ethernet.h:428
static uword sparse_vec_index(void *v, uword sparse_index)
Definition: sparse_vec.h:152
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:460
#define SUBINT_CONFIG_L2
Definition: ethernet.h:171
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:560
vlan_table_t * vlan_pool
Definition: ethernet.h:255
#define ASSERT(truth)
unsigned int u32
Definition: types.h:88
static u32 eth_identify_subint(vnet_hw_interface_t *hi, vlib_buffer_t *b0, u32 match_flags, main_intf_t *main_intf, vlan_intf_t *vlan_intf, qinq_intf_t *qinq_intf, u32 *new_sw_if_index, u8 *error0, u32 *is_l2)
Definition: ethernet.h:467
u8 * format_ethernet_header(u8 *s, va_list *args)
Definition: format.c:172
u32 redirect_l3_next
Definition: ethernet.h:240
void ethernet_register_l3_redirect(vlib_main_t *vm, u32 node_index)
Definition: node.c:1353
void ethernet_sw_interface_set_l2_mode_noport(vnet_main_t *vnm, u32 sw_if_index, u32 l2)
Definition: node.c:1022
static_always_inline int ethernet_frame_is_tagged(u16 type)
Definition: ethernet.h:65
static_always_inline void determine_next_node(ethernet_main_t *em, ethernet_input_variant_t variant, u32 is_l20, u32 type0, vlib_buffer_t *b0, u8 *error0, u8 *next0)
Definition: node.c:227
void ethernet_register_input_type(vlib_main_t *vm, ethernet_type_t type, u32 node_index)
Definition: node.c:1301
#define clib_error_report(e)
Definition: error.h:113
static u8 * format_ethernet_input_trace(u8 *s, va_list *va)
Definition: node.c:66
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:201
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:260
vlan_intf_t vlans[ETHERNET_N_VLAN]
Definition: ethernet.h:199
#define SUBINT_CONFIG_MATCH_2_TAG
Definition: ethernet.h:168
clib_error_t * next_by_ethertype_register(next_by_ethertype_t *l3_next, u32 ethertype, u32 next_index)
Definition: node.c:1226
struct vnet_sub_interface_t::@151::@152::@154 flags
u64 uword
Definition: types.h:112
#define vec_elt(v, i)
Get vector value at index i.
static vlib_node_registration_t ethernet_input_not_l2_node
(constructor) VLIB_REGISTER_NODE (ethernet_input_not_l2_node)
Definition: node.c:1159
#define foreach_ethernet_input_next
Definition: node.c:47
void vlib_trace_frame_buffers_only(vlib_main_t *vm, vlib_node_runtime_t *node, u32 *buffers, uword n_buffers, uword next_buffer_stride, uword n_buffer_data_bytes_in_trace)
Definition: trace.c:45
unsigned short u16
Definition: types.h:57
void l2bvi_register_input_type(vlib_main_t *vm, ethernet_type_t type, u32 node_index)
Definition: l2_bvi.c:27
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
unsigned char u8
Definition: types.h:56
VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(ethernet_sw_interface_up_down)
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:269
static clib_error_t * ethernet_init(vlib_main_t *vm)
Definition: init.c:82
void ethernet_sw_interface_set_l2_mode(vnet_main_t *vnm, u32 sw_if_index, u32 l2)
Definition: node.c:973
struct vnet_sub_interface_t::@151 eth
static uword ethernet_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:753
#define vnet_buffer(b)
Definition: buffer.h:303
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:144
vnet_sw_interface_type_t type
Definition: interface.h:555
static u32 eth_mac_equal(u8 *mac1, u8 *mac2)
Definition: ethernet.h:519
qinq_table_t * qinq_pool
Definition: ethernet.h:258
u8 data[0]
Packet data.
Definition: buffer.h:152
u16 flags
Copy of main node flags.
Definition: node.h:454
next_by_ethertype_t l3_next
Definition: ethernet.h:233
u32 flags
Definition: vhost-user.h:76
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:67
static void * sparse_vec_new(uword elt_bytes, uword sparse_index_bits)
Definition: sparse_vec.h:71
#define BITS(x)
Definition: clib.h:58
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
VLIB_NODE_FUNCTION_MULTIARCH(ethernet_input_not_l2_node, ethernet_input_not_l2)
Definition: node.c:1175
static void ethernet_setup_node(vlib_main_t *vm, u32 node_index)
Definition: ethernet.h:334
Definition: defs.h:46
uword unformat_ethernet_header(unformat_input_t *input, va_list *args)
Definition: format.c:277
u16 * input_next_by_type
Definition: ethernet.h:219
#define SPARSE_VEC_INVALID_INDEX
Definition: sparse_vec.h:68