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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>
44 #include <vppinfra/sparse_vec.h>
45 #include <vnet/l2/l2_bvi.h>
46 
47 
48 #define foreach_ethernet_input_next \
49  _ (PUNT, "error-punt") \
50  _ (DROP, "error-drop") \
51  _ (LLC, "llc-input")
52 
53 typedef enum
54 {
55 #define _(s,n) ETHERNET_INPUT_NEXT_##s,
57 #undef _
60 
61 typedef struct
62 {
63  u8 packet_data[32];
65 
66 static u8 *
67 format_ethernet_input_trace (u8 * s, va_list * va)
68 {
69  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
70  CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
72 
73  s = format (s, "%U", format_ethernet_header, t->packet_data);
74 
75  return s;
76 }
77 
79 
80 typedef enum
81 {
86 
87 
88 // Parse the ethernet header to extract vlan tags and innermost ethertype
91  vlib_buffer_t * b0,
92  u16 * type,
93  u16 * orig_type,
94  u16 * outer_id, u16 * inner_id, u32 * match_flags)
95 {
96  u8 vlan_count;
97 
98  if (variant == ETHERNET_INPUT_VARIANT_ETHERNET
99  || variant == ETHERNET_INPUT_VARIANT_NOT_L2)
100  {
101  ethernet_header_t *e0;
102 
103  e0 = (void *) (b0->data + b0->current_data);
104 
105  vnet_buffer (b0)->l2_hdr_offset = b0->current_data;
106  b0->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID;
107 
108  vlib_buffer_advance (b0, sizeof (e0[0]));
109 
110  *type = clib_net_to_host_u16 (e0->type);
111  }
112  else if (variant == ETHERNET_INPUT_VARIANT_ETHERNET_TYPE)
113  {
114  // here when prior node was LLC/SNAP processing
115  u16 *e0;
116 
117  e0 = (void *) (b0->data + b0->current_data);
118 
119  vlib_buffer_advance (b0, sizeof (e0[0]));
120 
121  *type = clib_net_to_host_u16 (e0[0]);
122  }
123 
124  // save for distinguishing between dot1q and dot1ad later
125  *orig_type = *type;
126 
127  // default the tags to 0 (used if there is no corresponding tag)
128  *outer_id = 0;
129  *inner_id = 0;
130 
132  vlan_count = 0;
133 
134  // check for vlan encaps
135  if (ethernet_frame_is_tagged (*type))
136  {
138  u16 tag;
139 
141 
142  h0 = (void *) (b0->data + b0->current_data);
143 
144  tag = clib_net_to_host_u16 (h0->priority_cfi_and_id);
145 
146  *outer_id = tag & 0xfff;
147  if (0 == *outer_id)
148  *match_flags &= ~SUBINT_CONFIG_MATCH_1_TAG;
149 
150  *type = clib_net_to_host_u16 (h0->type);
151 
152  vlib_buffer_advance (b0, sizeof (h0[0]));
153  vlan_count = 1;
154 
155  if (*type == ETHERNET_TYPE_VLAN)
156  {
157  // Double tagged packet
159 
160  h0 = (void *) (b0->data + b0->current_data);
161 
162  tag = clib_net_to_host_u16 (h0->priority_cfi_and_id);
163 
164  *inner_id = tag & 0xfff;
165 
166  *type = clib_net_to_host_u16 (h0->type);
167 
168  vlib_buffer_advance (b0, sizeof (h0[0]));
169  vlan_count = 2;
170  if (*type == ETHERNET_TYPE_VLAN)
171  {
172  // More than double tagged packet
174 
175  vlib_buffer_advance (b0, sizeof (h0[0]));
176  vlan_count = 3; // "unknown" number, aka, 3-or-more
177  }
178  }
179  }
180  ethernet_buffer_set_vlan_count (b0, vlan_count);
181 }
182 
183 // Determine the subinterface for this packet, given the result of the
184 // vlan table lookups and vlan header parsing. Check the most specific
185 // matches first.
188  vlib_buffer_t * b0,
189  u32 match_flags,
190  main_intf_t * main_intf,
191  vlan_intf_t * vlan_intf,
192  qinq_intf_t * qinq_intf,
193  u32 * new_sw_if_index, u8 * error0, u32 * is_l2)
194 {
195  u32 matched;
196 
197  matched = eth_identify_subint (hi, b0, match_flags,
198  main_intf, vlan_intf, qinq_intf,
199  new_sw_if_index, error0, is_l2);
200 
201  if (matched)
202  {
203 
204  // Perform L3 my-mac filter
205  // A unicast packet arriving on an L3 interface must have a dmac matching the interface mac.
206  // This is required for promiscuous mode, else we will forward packets we aren't supposed to.
207  if (!(*is_l2))
208  {
209  ethernet_header_t *e0;
210  e0 = (void *) (b0->data + vnet_buffer (b0)->l2_hdr_offset);
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)->l2_hdr_offset;
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 {
291 #if __SSE4_2__
292  const __m128i ethertype_mask = _mm_set_epi16 (ETHERNET_TYPE_VLAN,
293  ETHERNET_TYPE_DOT1AD,
294  ETHERNET_TYPE_VLAN_9100,
295  ETHERNET_TYPE_VLAN_9200,
296  /* duplicate for type1 */
297  ETHERNET_TYPE_VLAN,
298  ETHERNET_TYPE_DOT1AD,
299  ETHERNET_TYPE_VLAN_9100,
300  ETHERNET_TYPE_VLAN_9200);
301 
302  __m128i r =
303  _mm_set_epi16 (type0, type0, type0, type0, type1, type1, type1, type1);
304  r = _mm_cmpeq_epi16 (ethertype_mask, r);
305  return !_mm_test_all_zeros (r, r);
306 #else
307  return ethernet_frame_is_tagged (type0) || ethernet_frame_is_tagged (type1);
308 #endif
309 }
310 
313  vlib_node_runtime_t * node,
314  vlib_frame_t * from_frame,
315  ethernet_input_variant_t variant)
316 {
317  vnet_main_t *vnm = vnet_get_main ();
319  vlib_node_runtime_t *error_node;
320  u32 n_left_from, next_index, *from, *to_next;
321  u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
322  u32 thread_index = vlib_get_thread_index ();
323  u32 cached_sw_if_index = ~0;
324  u32 cached_is_l2 = 0; /* shut up gcc */
325  vnet_hw_interface_t *hi = NULL; /* used for main interface only */
326 
327  if (variant != ETHERNET_INPUT_VARIANT_ETHERNET)
328  error_node = vlib_node_get_runtime (vm, ethernet_input_node.index);
329  else
330  error_node = node;
331 
332  from = vlib_frame_vector_args (from_frame);
333  n_left_from = from_frame->n_vectors;
334 
335  if (node->flags & VLIB_NODE_FLAG_TRACE)
337  from,
338  n_left_from,
339  sizeof (from[0]),
340  sizeof (ethernet_input_trace_t));
341 
342  next_index = node->cached_next_index;
343  stats_sw_if_index = node->runtime_data[0];
344  stats_n_packets = stats_n_bytes = 0;
345 
346  while (n_left_from > 0)
347  {
348  u32 n_left_to_next;
349 
350  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
351 
352  while (n_left_from >= 4 && n_left_to_next >= 2)
353  {
354  u32 bi0, bi1;
355  vlib_buffer_t *b0, *b1;
356  u8 next0, next1, error0, error1;
357  u16 type0, orig_type0, type1, orig_type1;
358  u16 outer_id0, inner_id0, outer_id1, inner_id1;
359  u32 match_flags0, match_flags1;
360  u32 old_sw_if_index0, new_sw_if_index0, len0, old_sw_if_index1,
361  new_sw_if_index1, len1;
362  vnet_hw_interface_t *hi0, *hi1;
363  main_intf_t *main_intf0, *main_intf1;
364  vlan_intf_t *vlan_intf0, *vlan_intf1;
365  qinq_intf_t *qinq_intf0, *qinq_intf1;
366  u32 is_l20, is_l21;
367  ethernet_header_t *e0, *e1;
368 
369  /* Prefetch next iteration. */
370  {
371  vlib_buffer_t *b2, *b3;
372 
373  b2 = vlib_get_buffer (vm, from[2]);
374  b3 = vlib_get_buffer (vm, from[3]);
375 
376  vlib_prefetch_buffer_header (b2, STORE);
377  vlib_prefetch_buffer_header (b3, STORE);
378 
379  CLIB_PREFETCH (b2->data, sizeof (ethernet_header_t), LOAD);
380  CLIB_PREFETCH (b3->data, sizeof (ethernet_header_t), LOAD);
381  }
382 
383  bi0 = from[0];
384  bi1 = from[1];
385  to_next[0] = bi0;
386  to_next[1] = bi1;
387  from += 2;
388  to_next += 2;
389  n_left_to_next -= 2;
390  n_left_from -= 2;
391 
392  b0 = vlib_get_buffer (vm, bi0);
393  b1 = vlib_get_buffer (vm, bi1);
394 
395  error0 = error1 = ETHERNET_ERROR_NONE;
396  e0 = vlib_buffer_get_current (b0);
397  type0 = clib_net_to_host_u16 (e0->type);
398  e1 = vlib_buffer_get_current (b1);
399  type1 = clib_net_to_host_u16 (e1->type);
400 
401  /* Speed-path for the untagged case */
403  && !ethernet_frame_is_any_tagged (type0, type1)))
404  {
405  main_intf_t *intf0;
406  subint_config_t *subint0;
407  u32 sw_if_index0, sw_if_index1;
408 
409  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
410  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
411  is_l20 = cached_is_l2;
412 
413  /* This is probably wholly unnecessary */
414  if (PREDICT_FALSE (sw_if_index0 != sw_if_index1))
415  goto slowpath;
416 
417  /* Now sw_if_index0 == sw_if_index1 */
418  if (PREDICT_FALSE (cached_sw_if_index != sw_if_index0))
419  {
420  cached_sw_if_index = sw_if_index0;
421  hi = vnet_get_sup_hw_interface (vnm, sw_if_index0);
422  intf0 = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
423  subint0 = &intf0->untagged_subint;
424  cached_is_l2 = is_l20 = subint0->flags & SUBINT_CONFIG_L2;
425  }
426 
427  vnet_buffer (b0)->l2_hdr_offset = b0->current_data;
428  vnet_buffer (b1)->l2_hdr_offset = b1->current_data;
429  vnet_buffer (b0)->l3_hdr_offset =
430  vnet_buffer (b0)->l2_hdr_offset + sizeof (ethernet_header_t);
431  vnet_buffer (b1)->l3_hdr_offset =
432  vnet_buffer (b1)->l2_hdr_offset + sizeof (ethernet_header_t);
433  b0->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
434  VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
435  b1->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
436  VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
437 
438  if (PREDICT_TRUE (is_l20 != 0))
439  {
440  next0 = em->l2_next;
441  vnet_buffer (b0)->l2.l2_len = sizeof (ethernet_header_t);
442  next1 = em->l2_next;
443  vnet_buffer (b1)->l2.l2_len = sizeof (ethernet_header_t);
444  }
445  else
446  {
447  if (!ethernet_address_cast (e0->dst_address) &&
448  (hi->hw_address != 0) &&
449  !eth_mac_equal ((u8 *) e0, hi->hw_address))
450  error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
451  if (!ethernet_address_cast (e1->dst_address) &&
452  (hi->hw_address != 0) &&
453  !eth_mac_equal ((u8 *) e1, hi->hw_address))
454  error1 = ETHERNET_ERROR_L3_MAC_MISMATCH;
455  determine_next_node (em, variant, 0, type0, b0,
456  &error0, &next0);
457  vlib_buffer_advance (b0, sizeof (ethernet_header_t));
458  determine_next_node (em, variant, 0, type1, b1,
459  &error1, &next1);
460  vlib_buffer_advance (b1, sizeof (ethernet_header_t));
461  }
462  goto ship_it01;
463  }
464 
465  /* Slow-path for the tagged case */
466  slowpath:
467  parse_header (variant,
468  b0,
469  &type0,
470  &orig_type0, &outer_id0, &inner_id0, &match_flags0);
471 
472  parse_header (variant,
473  b1,
474  &type1,
475  &orig_type1, &outer_id1, &inner_id1, &match_flags1);
476 
477  old_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
478  old_sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
479 
481  vnm,
482  old_sw_if_index0,
483  orig_type0,
484  outer_id0,
485  inner_id0,
486  &hi0,
487  &main_intf0, &vlan_intf0, &qinq_intf0);
488 
490  vnm,
491  old_sw_if_index1,
492  orig_type1,
493  outer_id1,
494  inner_id1,
495  &hi1,
496  &main_intf1, &vlan_intf1, &qinq_intf1);
497 
498  identify_subint (hi0,
499  b0,
500  match_flags0,
501  main_intf0,
502  vlan_intf0,
503  qinq_intf0, &new_sw_if_index0, &error0, &is_l20);
504 
505  identify_subint (hi1,
506  b1,
507  match_flags1,
508  main_intf1,
509  vlan_intf1,
510  qinq_intf1, &new_sw_if_index1, &error1, &is_l21);
511 
512  // Save RX sw_if_index for later nodes
513  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
514  error0 !=
515  ETHERNET_ERROR_NONE ? old_sw_if_index0 : new_sw_if_index0;
516  vnet_buffer (b1)->sw_if_index[VLIB_RX] =
517  error1 !=
518  ETHERNET_ERROR_NONE ? old_sw_if_index1 : new_sw_if_index1;
519 
520  // Check if there is a stat to take (valid and non-main sw_if_index for pkt 0 or pkt 1)
521  if (((new_sw_if_index0 != ~0)
522  && (new_sw_if_index0 != old_sw_if_index0))
523  || ((new_sw_if_index1 != ~0)
524  && (new_sw_if_index1 != old_sw_if_index1)))
525  {
526 
527  len0 = vlib_buffer_length_in_chain (vm, b0) + b0->current_data
528  - vnet_buffer (b0)->l2_hdr_offset;
529  len1 = vlib_buffer_length_in_chain (vm, b1) + b1->current_data
530  - vnet_buffer (b1)->l2_hdr_offset;
531 
532  stats_n_packets += 2;
533  stats_n_bytes += len0 + len1;
534 
535  if (PREDICT_FALSE
536  (!(new_sw_if_index0 == stats_sw_if_index
537  && new_sw_if_index1 == stats_sw_if_index)))
538  {
539  stats_n_packets -= 2;
540  stats_n_bytes -= len0 + len1;
541 
542  if (new_sw_if_index0 != old_sw_if_index0
543  && new_sw_if_index0 != ~0)
545  interface_main.combined_sw_if_counters
546  +
548  thread_index,
549  new_sw_if_index0, 1,
550  len0);
551  if (new_sw_if_index1 != old_sw_if_index1
552  && new_sw_if_index1 != ~0)
554  interface_main.combined_sw_if_counters
555  +
557  thread_index,
558  new_sw_if_index1, 1,
559  len1);
560 
561  if (new_sw_if_index0 == new_sw_if_index1)
562  {
563  if (stats_n_packets > 0)
564  {
568  thread_index,
569  stats_sw_if_index,
570  stats_n_packets, stats_n_bytes);
571  stats_n_packets = stats_n_bytes = 0;
572  }
573  stats_sw_if_index = new_sw_if_index0;
574  }
575  }
576  }
577 
578  if (variant == ETHERNET_INPUT_VARIANT_NOT_L2)
579  is_l20 = is_l21 = 0;
580 
581  determine_next_node (em, variant, is_l20, type0, b0, &error0,
582  &next0);
583  determine_next_node (em, variant, is_l21, type1, b1, &error1,
584  &next1);
585  vnet_buffer (b0)->l3_hdr_offset = vnet_buffer (b0)->l2_hdr_offset +
586  vnet_buffer (b0)->l2.l2_len;
587  vnet_buffer (b1)->l3_hdr_offset = vnet_buffer (b1)->l2_hdr_offset +
588  vnet_buffer (b1)->l2.l2_len;
589  b0->flags |= VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
590  b1->flags |= VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
591 
592  ship_it01:
593  b0->error = error_node->errors[error0];
594  b1->error = error_node->errors[error1];
595 
596  // verify speculative enqueue
597  vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
598  n_left_to_next, bi0, bi1, next0,
599  next1);
600  }
601 
602  while (n_left_from > 0 && n_left_to_next > 0)
603  {
604  u32 bi0;
605  vlib_buffer_t *b0;
606  u8 error0, next0;
607  u16 type0, orig_type0;
608  u16 outer_id0, inner_id0;
609  u32 match_flags0;
610  u32 old_sw_if_index0, new_sw_if_index0, len0;
611  vnet_hw_interface_t *hi0;
612  main_intf_t *main_intf0;
613  vlan_intf_t *vlan_intf0;
614  qinq_intf_t *qinq_intf0;
615  ethernet_header_t *e0;
616  u32 is_l20;
617 
618  // Prefetch next iteration
619  if (n_left_from > 1)
620  {
621  vlib_buffer_t *p2;
622 
623  p2 = vlib_get_buffer (vm, from[1]);
624  vlib_prefetch_buffer_header (p2, STORE);
626  }
627 
628  bi0 = from[0];
629  to_next[0] = bi0;
630  from += 1;
631  to_next += 1;
632  n_left_from -= 1;
633  n_left_to_next -= 1;
634 
635  b0 = vlib_get_buffer (vm, bi0);
636 
637  error0 = ETHERNET_ERROR_NONE;
638  e0 = vlib_buffer_get_current (b0);
639  type0 = clib_net_to_host_u16 (e0->type);
640 
641  /* Speed-path for the untagged case */
643  && !ethernet_frame_is_tagged (type0)))
644  {
645  main_intf_t *intf0;
646  subint_config_t *subint0;
647  u32 sw_if_index0;
648 
649  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
650  is_l20 = cached_is_l2;
651 
652  if (PREDICT_FALSE (cached_sw_if_index != sw_if_index0))
653  {
654  cached_sw_if_index = sw_if_index0;
655  hi = vnet_get_sup_hw_interface (vnm, sw_if_index0);
656  intf0 = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
657  subint0 = &intf0->untagged_subint;
658  cached_is_l2 = is_l20 = subint0->flags & SUBINT_CONFIG_L2;
659  }
660 
661  vnet_buffer (b0)->l2_hdr_offset = b0->current_data;
662  vnet_buffer (b0)->l3_hdr_offset =
663  vnet_buffer (b0)->l2_hdr_offset + sizeof (ethernet_header_t);
664  b0->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
665  VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
666 
667  if (PREDICT_TRUE (is_l20 != 0))
668  {
669  next0 = em->l2_next;
670  vnet_buffer (b0)->l2.l2_len = sizeof (ethernet_header_t);
671  }
672  else
673  {
674  if (!ethernet_address_cast (e0->dst_address) &&
675  (hi->hw_address != 0) &&
676  !eth_mac_equal ((u8 *) e0, hi->hw_address))
677  error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
678  determine_next_node (em, variant, 0, type0, b0,
679  &error0, &next0);
680  vlib_buffer_advance (b0, sizeof (ethernet_header_t));
681  }
682  goto ship_it0;
683  }
684 
685  /* Slow-path for the tagged case */
686  parse_header (variant,
687  b0,
688  &type0,
689  &orig_type0, &outer_id0, &inner_id0, &match_flags0);
690 
691  old_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
692 
694  vnm,
695  old_sw_if_index0,
696  orig_type0,
697  outer_id0,
698  inner_id0,
699  &hi0,
700  &main_intf0, &vlan_intf0, &qinq_intf0);
701 
702  identify_subint (hi0,
703  b0,
704  match_flags0,
705  main_intf0,
706  vlan_intf0,
707  qinq_intf0, &new_sw_if_index0, &error0, &is_l20);
708 
709  // Save RX sw_if_index for later nodes
710  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
711  error0 !=
712  ETHERNET_ERROR_NONE ? old_sw_if_index0 : new_sw_if_index0;
713 
714  // Increment subinterface stats
715  // Note that interface-level counters have already been incremented
716  // prior to calling this function. Thus only subinterface counters
717  // are incremented here.
718  //
719  // Interface level counters include packets received on the main
720  // interface and all subinterfaces. Subinterface level counters
721  // include only those packets received on that subinterface
722  // Increment stats if the subint is valid and it is not the main intf
723  if ((new_sw_if_index0 != ~0)
724  && (new_sw_if_index0 != old_sw_if_index0))
725  {
726 
727  len0 = vlib_buffer_length_in_chain (vm, b0) + b0->current_data
728  - vnet_buffer (b0)->l2_hdr_offset;
729 
730  stats_n_packets += 1;
731  stats_n_bytes += len0;
732 
733  // Batch stat increments from the same subinterface so counters
734  // don't need to be incremented for every packet.
735  if (PREDICT_FALSE (new_sw_if_index0 != stats_sw_if_index))
736  {
737  stats_n_packets -= 1;
738  stats_n_bytes -= len0;
739 
740  if (new_sw_if_index0 != ~0)
744  thread_index, new_sw_if_index0, 1, len0);
745  if (stats_n_packets > 0)
746  {
750  thread_index,
751  stats_sw_if_index, stats_n_packets, stats_n_bytes);
752  stats_n_packets = stats_n_bytes = 0;
753  }
754  stats_sw_if_index = new_sw_if_index0;
755  }
756  }
757 
758  if (variant == ETHERNET_INPUT_VARIANT_NOT_L2)
759  is_l20 = 0;
760 
761  determine_next_node (em, variant, is_l20, type0, b0, &error0,
762  &next0);
763  vnet_buffer (b0)->l3_hdr_offset = vnet_buffer (b0)->l2_hdr_offset +
764  vnet_buffer (b0)->l2.l2_len;
765  b0->flags |= VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
766 
767  ship_it0:
768  b0->error = error_node->errors[error0];
769 
770  // verify speculative enqueue
771  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
772  to_next, n_left_to_next,
773  bi0, next0);
774  }
775 
776  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
777  }
778 
779  // Increment any remaining batched stats
780  if (stats_n_packets > 0)
781  {
785  thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
786  node->runtime_data[0] = stats_sw_if_index;
787  }
788 
789  return from_frame->n_vectors;
790 }
791 
792 static uword
794  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
795 {
796  return ethernet_input_inline (vm, node, from_frame,
798 }
799 
800 static uword
802  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
803 {
804  return ethernet_input_inline (vm, node, from_frame,
806 }
807 
808 static uword
810  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
811 {
812  return ethernet_input_inline (vm, node, from_frame,
814 }
815 
816 
817 // Return the subinterface config struct for the given sw_if_index
818 // Also return via parameter the appropriate match flags for the
819 // configured number of tags.
820 // On error (unsupported or not ethernet) return 0.
821 static subint_config_t *
823  u32 sw_if_index,
824  u32 * flags, u32 * unsupported)
825 {
829  main_intf_t *main_intf;
830  vlan_table_t *vlan_table;
831  qinq_table_t *qinq_table;
832  subint_config_t *subint = 0;
833 
834  hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
835 
836  if (!hi || (hi->hw_class_index != ethernet_hw_interface_class.index))
837  {
838  *unsupported = 0;
839  goto done; // non-ethernet interface
840  }
841 
842  // ensure there's an entry for the main intf (shouldn't really be necessary)
844  main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
845 
846  // Locate the subint for the given ethernet config
847  si = vnet_get_sw_interface (vnm, sw_if_index);
848 
849  if (si->type == VNET_SW_INTERFACE_TYPE_P2P)
850  {
851  p2p_ethernet_main_t *p2pm = &p2p_main;
852  u32 p2pe_sw_if_index =
854  if (p2pe_sw_if_index == ~0)
855  {
856  pool_get (p2pm->p2p_subif_pool, subint);
857  si->p2p.pool_index = subint - p2pm->p2p_subif_pool;
858  }
859  else
860  subint = vec_elt_at_index (p2pm->p2p_subif_pool, si->p2p.pool_index);
861  *flags = SUBINT_CONFIG_P2P;
862  }
863  else if (si->sub.eth.flags.default_sub)
864  {
865  subint = &main_intf->default_subint;
866  *flags = SUBINT_CONFIG_MATCH_0_TAG |
869  }
870  else if ((si->sub.eth.flags.no_tags) || (si->sub.eth.raw_flags == 0))
871  {
872  // if no flags are set then this is a main interface
873  // so treat as untagged
874  subint = &main_intf->untagged_subint;
875  *flags = SUBINT_CONFIG_MATCH_0_TAG;
876  }
877  else
878  {
879  // one or two tags
880  // first get the vlan table
881  if (si->sub.eth.flags.dot1ad)
882  {
883  if (main_intf->dot1ad_vlans == 0)
884  {
885  // Allocate a vlan table from the pool
886  pool_get (em->vlan_pool, vlan_table);
887  main_intf->dot1ad_vlans = vlan_table - em->vlan_pool;
888  }
889  else
890  {
891  // Get ptr to existing vlan table
892  vlan_table =
893  vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
894  }
895  }
896  else
897  { // dot1q
898  if (main_intf->dot1q_vlans == 0)
899  {
900  // Allocate a vlan table from the pool
901  pool_get (em->vlan_pool, vlan_table);
902  main_intf->dot1q_vlans = vlan_table - em->vlan_pool;
903  }
904  else
905  {
906  // Get ptr to existing vlan table
907  vlan_table =
908  vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
909  }
910  }
911 
912  if (si->sub.eth.flags.one_tag)
913  {
914  *flags = si->sub.eth.flags.exact_match ?
918 
919  if (si->sub.eth.flags.outer_vlan_id_any)
920  {
921  // not implemented yet
922  *unsupported = 1;
923  goto done;
924  }
925  else
926  {
927  // a single vlan, a common case
928  subint =
929  &vlan_table->vlans[si->sub.eth.
930  outer_vlan_id].single_tag_subint;
931  }
932 
933  }
934  else
935  {
936  // Two tags
937  *flags = si->sub.eth.flags.exact_match ?
940 
941  if (si->sub.eth.flags.outer_vlan_id_any
942  && si->sub.eth.flags.inner_vlan_id_any)
943  {
944  // not implemented yet
945  *unsupported = 1;
946  goto done;
947  }
948 
949  if (si->sub.eth.flags.inner_vlan_id_any)
950  {
951  // a specific outer and "any" inner
952  // don't need a qinq table for this
953  subint =
954  &vlan_table->vlans[si->sub.eth.
955  outer_vlan_id].inner_any_subint;
956  if (si->sub.eth.flags.exact_match)
957  {
958  *flags = SUBINT_CONFIG_MATCH_2_TAG;
959  }
960  else
961  {
962  *flags = SUBINT_CONFIG_MATCH_2_TAG |
964  }
965  }
966  else
967  {
968  // a specific outer + specifc innner vlan id, a common case
969 
970  // get the qinq table
971  if (vlan_table->vlans[si->sub.eth.outer_vlan_id].qinqs == 0)
972  {
973  // Allocate a qinq table from the pool
974  pool_get (em->qinq_pool, qinq_table);
975  vlan_table->vlans[si->sub.eth.outer_vlan_id].qinqs =
976  qinq_table - em->qinq_pool;
977  }
978  else
979  {
980  // Get ptr to existing qinq table
981  qinq_table =
983  vlan_table->vlans[si->sub.
984  eth.outer_vlan_id].
985  qinqs);
986  }
987  subint = &qinq_table->vlans[si->sub.eth.inner_vlan_id].subint;
988  }
989  }
990  }
991 
992 done:
993  return subint;
994 }
995 
996 clib_error_t *
998 {
999  subint_config_t *subint;
1000  u32 dummy_flags;
1001  u32 dummy_unsup;
1002  clib_error_t *error = 0;
1003 
1004  // Find the config for this subinterface
1005  subint =
1006  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
1007  &dummy_unsup);
1008 
1009  if (subint == 0)
1010  {
1011  // not implemented yet or not ethernet
1012  goto done;
1013  }
1014 
1015  subint->sw_if_index =
1016  ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? sw_if_index : ~0);
1017 
1018 done:
1019  return error;
1020 }
1021 
1023 
1024 
1025 // Set the L2/L3 mode for the subinterface
1026 void
1028 {
1029  subint_config_t *subint;
1030  u32 dummy_flags;
1031  u32 dummy_unsup;
1032  int is_port;
1033  vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, sw_if_index);
1034 
1035  is_port = !(sw->type == VNET_SW_INTERFACE_TYPE_SUB);
1036 
1037  // Find the config for this subinterface
1038  subint =
1039  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
1040  &dummy_unsup);
1041 
1042  if (subint == 0)
1043  {
1044  // unimplemented or not ethernet
1045  goto done;
1046  }
1047 
1048  // Double check that the config we found is for our interface (or the interface is down)
1049  ASSERT ((subint->sw_if_index == sw_if_index) | (subint->sw_if_index == ~0));
1050 
1051  if (l2)
1052  {
1053  subint->flags |= SUBINT_CONFIG_L2;
1054  if (is_port)
1055  subint->flags |=
1058  }
1059  else
1060  {
1061  subint->flags &= ~SUBINT_CONFIG_L2;
1062  if (is_port)
1063  subint->flags &=
1066  }
1067 
1068 done:
1069  return;
1070 }
1071 
1072 /*
1073  * Set the L2/L3 mode for the subinterface regardless of port
1074  */
1075 void
1077  u32 sw_if_index, u32 l2)
1078 {
1079  subint_config_t *subint;
1080  u32 dummy_flags;
1081  u32 dummy_unsup;
1082 
1083  /* Find the config for this subinterface */
1084  subint =
1085  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
1086  &dummy_unsup);
1087 
1088  if (subint == 0)
1089  {
1090  /* unimplemented or not ethernet */
1091  goto done;
1092  }
1093 
1094  /*
1095  * Double check that the config we found is for our interface (or the
1096  * interface is down)
1097  */
1098  ASSERT ((subint->sw_if_index == sw_if_index) | (subint->sw_if_index == ~0));
1099 
1100  if (l2)
1101  {
1102  subint->flags |= SUBINT_CONFIG_L2;
1103  }
1104  else
1105  {
1106  subint->flags &= ~SUBINT_CONFIG_L2;
1107  }
1108 
1109 done:
1110  return;
1111 }
1112 
1113 static clib_error_t *
1115  u32 sw_if_index, u32 is_create)
1116 {
1117  clib_error_t *error = 0;
1118  subint_config_t *subint;
1119  u32 match_flags;
1120  u32 unsupported = 0;
1121 
1122  // Find the config for this subinterface
1123  subint =
1124  ethernet_sw_interface_get_config (vnm, sw_if_index, &match_flags,
1125  &unsupported);
1126 
1127  if (subint == 0)
1128  {
1129  // not implemented yet or not ethernet
1130  if (unsupported)
1131  {
1132  // this is the NYI case
1133  error = clib_error_return (0, "not implemented yet");
1134  }
1135  goto done;
1136  }
1137 
1138  if (!is_create)
1139  {
1140  subint->flags = 0;
1141  return error;
1142  }
1143 
1144  // Initialize the subint
1145  if (subint->flags & SUBINT_CONFIG_VALID)
1146  {
1147  // Error vlan already in use
1148  error = clib_error_return (0, "vlan is already in use");
1149  }
1150  else
1151  {
1152  // Note that config is L3 by defaulty
1153  subint->flags = SUBINT_CONFIG_VALID | match_flags;
1154  subint->sw_if_index = ~0; // because interfaces are initially down
1155  }
1156 
1157 done:
1158  return error;
1159 }
1160 
1162 
1163 static char *ethernet_error_strings[] = {
1164 #define ethernet_error(n,c,s) s,
1165 #include "error.def"
1166 #undef ethernet_error
1167 };
1168 
1169 /* *INDENT-OFF* */
1171  .function = ethernet_input,
1172  .name = "ethernet-input",
1173  /* Takes a vector of packets. */
1174  .vector_size = sizeof (u32),
1175  .n_errors = ETHERNET_N_ERROR,
1176  .error_strings = ethernet_error_strings,
1177  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1178  .next_nodes = {
1179 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1181 #undef _
1182  },
1183  .format_buffer = format_ethernet_header_with_length,
1184  .format_trace = format_ethernet_input_trace,
1185  .unformat_buffer = unformat_ethernet_header,
1186 };
1187 /* *INDENT-ON* */
1188 
1189 /* *INDENT-OFF* */
1191 /* *INDENT-ON* */
1192 
1193 /* *INDENT-OFF* */
1195  .function = ethernet_input_type,
1196  .name = "ethernet-input-type",
1197  /* Takes a vector of packets. */
1198  .vector_size = sizeof (u32),
1199  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1200  .next_nodes = {
1201 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1203 #undef _
1204  },
1205 };
1206 /* *INDENT-ON* */
1207 
1208 /* *INDENT-OFF* */
1210 /* *INDENT-ON* */
1211 
1212 /* *INDENT-OFF* */
1214  .function = ethernet_input_not_l2,
1215  .name = "ethernet-input-not-l2",
1216  /* Takes a vector of packets. */
1217  .vector_size = sizeof (u32),
1218  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1219  .next_nodes = {
1220 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1222 #undef _
1223  },
1224 };
1225 /* *INDENT-ON* */
1226 
1227 
1228 /* *INDENT-OFF* */
1231 /* *INDENT-ON* */
1232 
1233 
1234 void
1236  vnet_hw_interface_t * hi, u32 enable)
1237 {
1238  // Insure all packets go to ethernet-input (i.e. untagged ipv4 packets
1239  // don't go directly to ip4-input)
1241  (vnm, hi->hw_if_index, enable ? ethernet_input_node.index : ~0);
1242 }
1243 
1244 
1245 /*
1246  * Initialization and registration for the next_by_ethernet structure
1247  */
1248 
1249 clib_error_t *
1251 {
1253  ( /* elt bytes */ sizeof (l3_next->input_next_by_type[0]),
1254  /* bits in index */ BITS (((ethernet_header_t *) 0)->type));
1255 
1257  ETHERNET_INPUT_NEXT_DROP);
1259  ETHERNET_INPUT_NEXT_PUNT);
1260  l3_next->sparse_index_by_input_next_index[ETHERNET_INPUT_NEXT_DROP] =
1262  l3_next->sparse_index_by_input_next_index[ETHERNET_INPUT_NEXT_PUNT] =
1264 
1265  /*
1266  * Make sure we don't wipe out an ethernet registration by mistake
1267  * Can happen if init function ordering constraints are missing.
1268  */
1269  if (CLIB_DEBUG > 0)
1270  {
1273  }
1274 
1275  return 0;
1276 }
1277 
1278 // Add an ethertype -> next index mapping to the structure
1279 clib_error_t *
1281  u32 ethertype, u32 next_index)
1282 {
1283  u32 i;
1284  u16 *n;
1286 
1287  if (CLIB_DEBUG > 0)
1288  {
1291  }
1292 
1293  /* Setup ethernet type -> next index sparse vector mapping. */
1294  n = sparse_vec_validate (l3_next->input_next_by_type, ethertype);
1295  n[0] = next_index;
1296 
1297  /* Rebuild next index -> sparse index inverse mapping when sparse vector
1298  is updated. */
1299  vec_validate (l3_next->sparse_index_by_input_next_index, next_index);
1300  for (i = 1; i < vec_len (l3_next->input_next_by_type); i++)
1301  l3_next->
1302  sparse_index_by_input_next_index[l3_next->input_next_by_type[i]] = i;
1303 
1304  // do not allow the cached next index's to be updated if L3
1305  // redirect is enabled, as it will have overwritten them
1306  if (!em->redirect_l3)
1307  {
1308  // Cache common ethertypes directly
1309  if (ethertype == ETHERNET_TYPE_IP4)
1310  {
1311  l3_next->input_next_ip4 = next_index;
1312  }
1313  else if (ethertype == ETHERNET_TYPE_IP6)
1314  {
1315  l3_next->input_next_ip6 = next_index;
1316  }
1317  else if (ethertype == ETHERNET_TYPE_MPLS)
1318  {
1319  l3_next->input_next_mpls = next_index;
1320  }
1321  }
1322  return 0;
1323 }
1324 
1325 
1326 static clib_error_t *
1328 {
1330  __attribute__ ((unused)) vlan_table_t *invalid_vlan_table;
1331  __attribute__ ((unused)) qinq_table_t *invalid_qinq_table;
1332 
1336 
1338 
1339  // Initialize pools and vector for vlan parsing
1340  vec_validate (em->main_intfs, 10); // 10 main interfaces
1341  pool_alloc (em->vlan_pool, 10);
1342  pool_alloc (em->qinq_pool, 1);
1343 
1344  // The first vlan pool will always be reserved for an invalid table
1345  pool_get (em->vlan_pool, invalid_vlan_table); // first id = 0
1346  // The first qinq pool will always be reserved for an invalid table
1347  pool_get (em->qinq_pool, invalid_qinq_table); // first id = 0
1348 
1349  return 0;
1350 }
1351 
1353 
1354 void
1356  ethernet_type_t type, u32 node_index)
1357 {
1360  u32 i;
1361 
1362  {
1364  if (error)
1365  clib_error_report (error);
1366  }
1367 
1368  ti = ethernet_get_type_info (em, type);
1369  ti->node_index = node_index;
1370  ti->next_index = vlib_node_add_next (vm,
1371  ethernet_input_node.index, node_index);
1372  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1373  ASSERT (i == ti->next_index);
1374 
1375  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1376  ASSERT (i == ti->next_index);
1377 
1378  // Add the L3 node for this ethertype to the next nodes structure
1379  next_by_ethertype_register (&em->l3_next, type, ti->next_index);
1380 
1381  // Call the registration functions for other nodes that want a mapping
1382  l2bvi_register_input_type (vm, type, node_index);
1383 }
1384 
1385 void
1387 {
1389  u32 i;
1390 
1391  em->l2_next =
1392  vlib_node_add_next (vm, ethernet_input_node.index, node_index);
1393 
1394  /*
1395  * Even if we never use these arcs, we have to align the next indices...
1396  */
1397  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1398 
1399  ASSERT (i == em->l2_next);
1400 
1401  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1402  ASSERT (i == em->l2_next);
1403 }
1404 
1405 // Register a next node for L3 redirect, and enable L3 redirect
1406 void
1408 {
1410  u32 i;
1411 
1412  em->redirect_l3 = 1;
1414  ethernet_input_node.index,
1415  node_index);
1416  /*
1417  * Change the cached next nodes to the redirect node
1418  */
1422 
1423  /*
1424  * Even if we never use these arcs, we have to align the next indices...
1425  */
1426  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1427 
1428  ASSERT (i == em->redirect_l3_next);
1429 
1430  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1431 
1432  ASSERT (i == em->redirect_l3_next);
1433 }
1434 
1435 /*
1436  * fd.io coding-style-patch-verification: ON
1437  *
1438  * Local Variables:
1439  * eval: (c-set-style "gnu")
1440  * End:
1441  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:432
subint_config_t subint
Definition: ethernet.h:211
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:187
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:312
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:464
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)
#define pool_alloc(P, N)
Allocate N more free elements to pool (unspecified alignment).
Definition: pool.h:324
vnet_interface_main_t interface_main
Definition: vnet.h:56
vnet_p2p_sub_interface_t p2p
Definition: interface.h:615
#define PREDICT_TRUE(x)
Definition: clib.h:106
int vnet_hw_interface_rx_redirect_to_node(vnet_main_t *vnm, u32 hw_if_index, u32 node_index)
Definition: interface.c:1133
void ethernet_register_l2_input(vlib_main_t *vm, u32 node_index)
Definition: node.c:1386
#define NULL
Definition: clib.h:55
ethernet_type_t
Definition: packet.h:43
#define SUBINT_CONFIG_MATCH_0_TAG
Definition: ethernet.h:172
#define ethernet_buffer_header_size(b)
Determine the size of the Ethernet headers of the current frame in the buffer.
Definition: ethernet.h:396
static subint_config_t * ethernet_sw_interface_get_config(vnet_main_t *vnm, u32 sw_if_index, u32 *flags, u32 *unsupported)
Definition: node.c:822
ethernet_input_variant_t
Definition: node.c:80
struct _vlib_node_registration vlib_node_registration_t
main_intf_t * main_intfs
Definition: ethernet.h:259
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:200
u8 packet_data[32]
Definition: node.c:63
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:415
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:107
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:225
static uword vlib_node_add_next(vlib_main_t *vm, uword node, uword next_node)
Definition: node_funcs.h:1108
static clib_error_t * ethernet_sw_interface_add_del(vnet_main_t *vnm, u32 sw_if_index, u32 is_create)
Definition: node.c:1114
vlib_node_registration_t ethernet_input_node
(constructor) VLIB_REGISTER_NODE (ethernet_input_node)
Definition: node.c:78
ethernet_main_t ethernet_main
Definition: init.c:45
i16 current_data
signed offset in data[], pre_data[] that we are currently processing.
Definition: buffer.h:68
#define static_always_inline
Definition: clib.h:93
#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:1250
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:672
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:171
subint_config_t default_subint
Definition: ethernet.h:192
#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:1163
ethernet_input_next_t
Definition: node.c:53
static_always_inline int ethernet_frame_is_any_tagged(u16 type0, u16 type1)
Definition: node.c:289
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:1327
u16 dot1q_vlans
Definition: ethernet.h:193
subint_config_t single_tag_subint
Definition: ethernet.h:199
vnet_sub_interface_t sub
Definition: interface.h:612
u32 * sparse_index_by_input_next_index
Definition: ethernet.h:227
static ethernet_type_info_t * ethernet_get_type_info(ethernet_main_t *em, ethernet_type_t type)
Definition: ethernet.h:283
clib_error_t * ethernet_sw_interface_up_down(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: node.c:997
static uword ethernet_input_not_l2(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:809
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:195
static vlib_node_registration_t ethernet_input_type_node
(constructor) VLIB_REGISTER_NODE (ethernet_input_type_node)
Definition: node.c:1194
struct vnet_sub_interface_t::@180::@181::@183 flags
#define PREDICT_FALSE(x)
Definition: clib.h:105
#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:369
u16 dot1ad_vlans
Definition: ethernet.h:194
#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: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
#define SUBINT_CONFIG_MATCH_3_TAG
Definition: ethernet.h:175
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:271
subint_config_t untagged_subint
Definition: ethernet.h:191
u32 p2p_ethernet_lookup(u32 parent_if_index, u8 *client_mac)
Definition: p2p_ethernet.c:35
u8 * format_ethernet_header_with_length(u8 *s, va_list *args)
Definition: format.c:91
#define SUBINT_CONFIG_VALID
Definition: ethernet.h:176
struct vnet_sub_interface_t::@180 eth
qinq_intf_t vlans[ETHERNET_N_VLAN]
Definition: ethernet.h:216
u16 n_vectors
Definition: node.h:344
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:221
VNET_SW_INTERFACE_ADD_DEL_FUNCTION(ethernet_sw_interface_add_del)
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:82
vlib_main_t * vm
Definition: buffer.c:283
static uword ethernet_input_type(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:801
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:89
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
#define SUBINT_CONFIG_MATCH_1_TAG
Definition: ethernet.h:173
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:90
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:434
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:456
#define SUBINT_CONFIG_L2
Definition: ethernet.h:177
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:576
vlan_table_t * vlan_pool
Definition: ethernet.h:262
#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:473
u8 * format_ethernet_header(u8 *s, va_list *args)
Definition: format.c:172
u32 redirect_l3_next
Definition: ethernet.h:247
void ethernet_register_l3_redirect(vlib_main_t *vm, u32 node_index)
Definition: node.c:1407
void ethernet_sw_interface_set_l2_mode_noport(vnet_main_t *vnm, u32 sw_if_index, u32 l2)
Definition: node.c:1076
static_always_inline int ethernet_frame_is_tagged(u16 type)
Definition: ethernet.h:71
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:1355
#define clib_error_report(e)
Definition: error.h:113
static u8 * format_ethernet_input_trace(u8 *s, va_list *va)
Definition: node.c:67
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:208
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:259
vlan_intf_t vlans[ETHERNET_N_VLAN]
Definition: ethernet.h:206
#define SUBINT_CONFIG_MATCH_2_TAG
Definition: ethernet.h:174
clib_error_t * next_by_ethertype_register(next_by_ethertype_t *l3_next, u32 ethertype, u32 next_index)
Definition: node.c:1280
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:1213
#define foreach_ethernet_input_next
Definition: node.c:48
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
#define SUBINT_CONFIG_P2P
Definition: ethernet.h:178
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:267
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:1027
static uword ethernet_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:793
#define vnet_buffer(b)
Definition: buffer.h:326
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:143
p2p_ethernet_main_t p2p_main
Definition: p2p_ethernet.c:23
vnet_sw_interface_type_t type
Definition: interface.h:571
static u32 eth_mac_equal(u8 *mac1, u8 *mac2)
Definition: ethernet.h:525
qinq_table_t * qinq_pool
Definition: ethernet.h:265
u8 data[0]
Packet data.
Definition: buffer.h:159
u16 flags
Copy of main node flags.
Definition: node.h:450
next_by_ethertype_t l3_next
Definition: ethernet.h:240
subint_config_t * p2p_subif_pool
Definition: p2p_ethernet.h:31
u32 flags
Definition: vhost-user.h:77
#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
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
#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:1229
static void ethernet_setup_node(vlib_main_t *vm, u32 node_index)
Definition: ethernet.h:341
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:226
#define SPARSE_VEC_INVALID_INDEX
Definition: sparse_vec.h:68