FD.io VPP  v17.04-9-g99c0734
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 
146  *type = clib_net_to_host_u16 (h0->type);
147 
148  vlib_buffer_advance (b0, sizeof (h0[0]));
149  vlan_count = 1;
150 
151  if (*type == ETHERNET_TYPE_VLAN)
152  {
153  // Double tagged packet
155 
156  h0 = (void *) (b0->data + b0->current_data);
157 
158  tag = clib_net_to_host_u16 (h0->priority_cfi_and_id);
159 
160  *inner_id = tag & 0xfff;
161 
162  *type = clib_net_to_host_u16 (h0->type);
163 
164  vlib_buffer_advance (b0, sizeof (h0[0]));
165  vlan_count = 2;
166 
167  if (*type == ETHERNET_TYPE_VLAN)
168  {
169  // More than double tagged packet
171  vlan_count = 3; // "unknown" number, aka, 3-or-more
172  }
173  }
174  }
175  ethernet_buffer_set_vlan_count (b0, vlan_count);
176 }
177 
178 // Determine the subinterface for this packet, given the result of the
179 // vlan table lookups and vlan header parsing. Check the most specific
180 // matches first.
183  vlib_buffer_t * b0,
184  u32 match_flags,
185  main_intf_t * main_intf,
186  vlan_intf_t * vlan_intf,
187  qinq_intf_t * qinq_intf,
188  u32 * new_sw_if_index, u8 * error0, u32 * is_l2)
189 {
190  u32 matched;
191 
192  matched = eth_identify_subint (hi, b0, match_flags,
193  main_intf, vlan_intf, qinq_intf,
194  new_sw_if_index, error0, is_l2);
195 
196  if (matched)
197  {
198 
199  // Perform L3 my-mac filter
200  // A unicast packet arriving on an L3 interface must have a dmac matching the interface mac.
201  // This is required for promiscuous mode, else we will forward packets we aren't supposed to.
202  if (!(*is_l2))
203  {
204  ethernet_header_t *e0;
205  e0 =
206  (void *) (b0->data +
207  vnet_buffer (b0)->ethernet.start_of_ethernet_header);
208 
209  if (!(ethernet_address_cast (e0->dst_address)))
210  {
211  if (!eth_mac_equal ((u8 *) e0, hi->hw_address))
212  {
213  *error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
214  }
215  }
216  }
217 
218  // Check for down subinterface
219  *error0 = (*new_sw_if_index) != ~0 ? (*error0) : ETHERNET_ERROR_DOWN;
220  }
221 }
222 
225  ethernet_input_variant_t variant,
226  u32 is_l20,
227  u32 type0, vlib_buffer_t * b0, u8 * error0, u8 * next0)
228 {
229  if (PREDICT_FALSE (*error0 != ETHERNET_ERROR_NONE))
230  {
231  // some error occurred
232  *next0 = ETHERNET_INPUT_NEXT_DROP;
233  }
234  else if (is_l20)
235  {
236  *next0 = em->l2_next;
237  // record the L2 len and reset the buffer so the L2 header is preserved
238  u32 eth_start = vnet_buffer (b0)->ethernet.start_of_ethernet_header;
239  vnet_buffer (b0)->l2.l2_len = b0->current_data - eth_start;
241 
242  // check for common IP/MPLS ethertypes
243  }
244  else if (type0 == ETHERNET_TYPE_IP4)
245  {
246  *next0 = em->l3_next.input_next_ip4;
247  }
248  else if (type0 == ETHERNET_TYPE_IP6)
249  {
250  *next0 = em->l3_next.input_next_ip6;
251  }
252  else if (type0 == ETHERNET_TYPE_MPLS_UNICAST)
253  {
254  *next0 = em->l3_next.input_next_mpls;
255 
256  }
257  else if (em->redirect_l3)
258  {
259  // L3 Redirect is on, the cached common next nodes will be
260  // pointing to the redirect node, catch the uncommon types here
261  *next0 = em->redirect_l3_next;
262  }
263  else
264  {
265  // uncommon ethertype, check table
266  u32 i0;
267  i0 = sparse_vec_index (em->l3_next.input_next_by_type, type0);
268  *next0 = vec_elt (em->l3_next.input_next_by_type, i0);
269  *error0 =
270  i0 ==
271  SPARSE_VEC_INVALID_INDEX ? ETHERNET_ERROR_UNKNOWN_TYPE : *error0;
272 
273  // The table is not populated with LLC values, so check that now.
274  // If variant is variant_ethernet then we came from LLC processing. Don't
275  // go back there; drop instead using by keeping the drop/bad table result.
276  if ((type0 < 0x600) && (variant == ETHERNET_INPUT_VARIANT_ETHERNET))
277  {
278  *next0 = ETHERNET_INPUT_NEXT_LLC;
279  }
280  }
281 }
282 
285  vlib_node_runtime_t * node,
286  vlib_frame_t * from_frame,
287  ethernet_input_variant_t variant)
288 {
289  vnet_main_t *vnm = vnet_get_main ();
291  vlib_node_runtime_t *error_node;
292  u32 n_left_from, next_index, *from, *to_next;
293  u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
294  u32 cpu_index = os_get_cpu_number ();
295  u32 cached_sw_if_index = ~0;
296  u32 cached_is_l2 = 0; /* shut up gcc */
297  vnet_hw_interface_t *hi = NULL; /* used for main interface only */
298 
299  if (variant != ETHERNET_INPUT_VARIANT_ETHERNET)
300  error_node = vlib_node_get_runtime (vm, ethernet_input_node.index);
301  else
302  error_node = node;
303 
304  from = vlib_frame_vector_args (from_frame);
305  n_left_from = from_frame->n_vectors;
306 
307  if (node->flags & VLIB_NODE_FLAG_TRACE)
309  from,
310  n_left_from,
311  sizeof (from[0]),
312  sizeof (ethernet_input_trace_t));
313 
314  next_index = node->cached_next_index;
315  stats_sw_if_index = node->runtime_data[0];
316  stats_n_packets = stats_n_bytes = 0;
317 
318  while (n_left_from > 0)
319  {
320  u32 n_left_to_next;
321 
322  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
323 
324  while (n_left_from >= 4 && n_left_to_next >= 2)
325  {
326  u32 bi0, bi1;
327  vlib_buffer_t *b0, *b1;
328  u8 next0, next1, error0, error1;
329  u16 type0, orig_type0, type1, orig_type1;
330  u16 outer_id0, inner_id0, outer_id1, inner_id1;
331  u32 match_flags0, match_flags1;
332  u32 old_sw_if_index0, new_sw_if_index0, len0, old_sw_if_index1,
333  new_sw_if_index1, len1;
334  vnet_hw_interface_t *hi0, *hi1;
335  main_intf_t *main_intf0, *main_intf1;
336  vlan_intf_t *vlan_intf0, *vlan_intf1;
337  qinq_intf_t *qinq_intf0, *qinq_intf1;
338  u32 is_l20, is_l21;
339  ethernet_header_t *e0, *e1;
340 
341  /* Prefetch next iteration. */
342  {
343  vlib_buffer_t *b2, *b3;
344 
345  b2 = vlib_get_buffer (vm, from[2]);
346  b3 = vlib_get_buffer (vm, from[3]);
347 
348  vlib_prefetch_buffer_header (b2, STORE);
349  vlib_prefetch_buffer_header (b3, STORE);
350 
351  CLIB_PREFETCH (b2->data, sizeof (ethernet_header_t), LOAD);
352  CLIB_PREFETCH (b3->data, sizeof (ethernet_header_t), LOAD);
353  }
354 
355  bi0 = from[0];
356  bi1 = from[1];
357  to_next[0] = bi0;
358  to_next[1] = bi1;
359  from += 2;
360  to_next += 2;
361  n_left_to_next -= 2;
362  n_left_from -= 2;
363 
364  b0 = vlib_get_buffer (vm, bi0);
365  b1 = vlib_get_buffer (vm, bi1);
366 
367  error0 = error1 = ETHERNET_ERROR_NONE;
368  e0 = vlib_buffer_get_current (b0);
369  type0 = clib_net_to_host_u16 (e0->type);
370  e1 = vlib_buffer_get_current (b1);
371  type1 = clib_net_to_host_u16 (e1->type);
372 
373  /* Speed-path for the untagged case */
375  && !ethernet_frame_is_tagged (type0)
376  && !ethernet_frame_is_tagged (type1)))
377  {
378  main_intf_t *intf0;
379  subint_config_t *subint0;
380  u32 sw_if_index0, sw_if_index1;
381 
382  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
383  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
384  is_l20 = cached_is_l2;
385 
386  /* This is probably wholly unnecessary */
387  if (PREDICT_FALSE (sw_if_index0 != sw_if_index1))
388  goto slowpath;
389 
390  /* Now sw_if_index0 == sw_if_index1 */
391  if (PREDICT_FALSE (cached_sw_if_index != sw_if_index0))
392  {
393  cached_sw_if_index = sw_if_index0;
394  hi = vnet_get_sup_hw_interface (vnm, sw_if_index0);
395  intf0 = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
396  subint0 = &intf0->untagged_subint;
397  cached_is_l2 = is_l20 = subint0->flags & SUBINT_CONFIG_L2;
398  }
399 
400  vnet_buffer (b0)->ethernet.start_of_ethernet_header =
401  b0->current_data;
402  vnet_buffer (b1)->ethernet.start_of_ethernet_header =
403  b1->current_data;
404 
405  if (PREDICT_TRUE (is_l20 != 0))
406  {
407  next0 = em->l2_next;
408  vnet_buffer (b0)->l2.l2_len = sizeof (ethernet_header_t);
409  next1 = em->l2_next;
410  vnet_buffer (b1)->l2.l2_len = sizeof (ethernet_header_t);
411  }
412  else
413  {
414  if (!ethernet_address_cast (e0->dst_address) &&
415  (hi->hw_address != 0) &&
416  !eth_mac_equal ((u8 *) e0, hi->hw_address))
417  error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
418  if (!ethernet_address_cast (e1->dst_address) &&
419  (hi->hw_address != 0) &&
420  !eth_mac_equal ((u8 *) e1, hi->hw_address))
421  error1 = ETHERNET_ERROR_L3_MAC_MISMATCH;
422  determine_next_node (em, variant, 0, type0, b0,
423  &error0, &next0);
424  vlib_buffer_advance (b0, sizeof (ethernet_header_t));
425  determine_next_node (em, variant, 0, type1, b1,
426  &error1, &next1);
427  vlib_buffer_advance (b1, sizeof (ethernet_header_t));
428  }
429  goto ship_it01;
430  }
431 
432  /* Slow-path for the tagged case */
433  slowpath:
434  parse_header (variant,
435  b0,
436  &type0,
437  &orig_type0, &outer_id0, &inner_id0, &match_flags0);
438 
439  parse_header (variant,
440  b1,
441  &type1,
442  &orig_type1, &outer_id1, &inner_id1, &match_flags1);
443 
444  old_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
445  old_sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
446 
448  vnm,
449  old_sw_if_index0,
450  orig_type0,
451  outer_id0,
452  inner_id0,
453  &hi0,
454  &main_intf0, &vlan_intf0, &qinq_intf0);
455 
457  vnm,
458  old_sw_if_index1,
459  orig_type1,
460  outer_id1,
461  inner_id1,
462  &hi1,
463  &main_intf1, &vlan_intf1, &qinq_intf1);
464 
465  identify_subint (hi0,
466  b0,
467  match_flags0,
468  main_intf0,
469  vlan_intf0,
470  qinq_intf0, &new_sw_if_index0, &error0, &is_l20);
471 
472  identify_subint (hi1,
473  b1,
474  match_flags1,
475  main_intf1,
476  vlan_intf1,
477  qinq_intf1, &new_sw_if_index1, &error1, &is_l21);
478 
479  // Save RX sw_if_index for later nodes
480  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
481  error0 !=
482  ETHERNET_ERROR_NONE ? old_sw_if_index0 : new_sw_if_index0;
483  vnet_buffer (b1)->sw_if_index[VLIB_RX] =
484  error1 !=
485  ETHERNET_ERROR_NONE ? old_sw_if_index1 : new_sw_if_index1;
486 
487  // Check if there is a stat to take (valid and non-main sw_if_index for pkt 0 or pkt 1)
488  if (((new_sw_if_index0 != ~0)
489  && (new_sw_if_index0 != old_sw_if_index0))
490  || ((new_sw_if_index1 != ~0)
491  && (new_sw_if_index1 != old_sw_if_index1)))
492  {
493 
494  len0 = vlib_buffer_length_in_chain (vm, b0) + b0->current_data
495  - vnet_buffer (b0)->ethernet.start_of_ethernet_header;
496  len1 = vlib_buffer_length_in_chain (vm, b1) + b1->current_data
497  - vnet_buffer (b1)->ethernet.start_of_ethernet_header;
498 
499  stats_n_packets += 2;
500  stats_n_bytes += len0 + len1;
501 
502  if (PREDICT_FALSE
503  (!(new_sw_if_index0 == stats_sw_if_index
504  && new_sw_if_index1 == stats_sw_if_index)))
505  {
506  stats_n_packets -= 2;
507  stats_n_bytes -= len0 + len1;
508 
509  if (new_sw_if_index0 != old_sw_if_index0
510  && new_sw_if_index0 != ~0)
512  interface_main.combined_sw_if_counters
513  +
515  cpu_index,
516  new_sw_if_index0, 1,
517  len0);
518  if (new_sw_if_index1 != old_sw_if_index1
519  && new_sw_if_index1 != ~0)
521  interface_main.combined_sw_if_counters
522  +
524  cpu_index,
525  new_sw_if_index1, 1,
526  len1);
527 
528  if (new_sw_if_index0 == new_sw_if_index1)
529  {
530  if (stats_n_packets > 0)
531  {
535  cpu_index,
536  stats_sw_if_index,
537  stats_n_packets, stats_n_bytes);
538  stats_n_packets = stats_n_bytes = 0;
539  }
540  stats_sw_if_index = new_sw_if_index0;
541  }
542  }
543  }
544 
545  if (variant == ETHERNET_INPUT_VARIANT_NOT_L2)
546  is_l20 = is_l21 = 0;
547 
548  determine_next_node (em, variant, is_l20, type0, b0, &error0,
549  &next0);
550  determine_next_node (em, variant, is_l21, type1, b1, &error1,
551  &next1);
552 
553  ship_it01:
554  b0->error = error_node->errors[error0];
555  b1->error = error_node->errors[error1];
556 
557  // verify speculative enqueue
558  vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
559  n_left_to_next, bi0, bi1, next0,
560  next1);
561  }
562 
563  while (n_left_from > 0 && n_left_to_next > 0)
564  {
565  u32 bi0;
566  vlib_buffer_t *b0;
567  u8 error0, next0;
568  u16 type0, orig_type0;
569  u16 outer_id0, inner_id0;
570  u32 match_flags0;
571  u32 old_sw_if_index0, new_sw_if_index0, len0;
572  vnet_hw_interface_t *hi0;
573  main_intf_t *main_intf0;
574  vlan_intf_t *vlan_intf0;
575  qinq_intf_t *qinq_intf0;
576  ethernet_header_t *e0;
577  u32 is_l20;
578 
579  // Prefetch next iteration
580  if (n_left_from > 1)
581  {
582  vlib_buffer_t *p2;
583 
584  p2 = vlib_get_buffer (vm, from[1]);
585  vlib_prefetch_buffer_header (p2, STORE);
587  }
588 
589  bi0 = from[0];
590  to_next[0] = bi0;
591  from += 1;
592  to_next += 1;
593  n_left_from -= 1;
594  n_left_to_next -= 1;
595 
596  b0 = vlib_get_buffer (vm, bi0);
597 
598  error0 = ETHERNET_ERROR_NONE;
599  e0 = vlib_buffer_get_current (b0);
600  type0 = clib_net_to_host_u16 (e0->type);
601 
602  /* Speed-path for the untagged case */
604  && !ethernet_frame_is_tagged (type0)))
605  {
606  main_intf_t *intf0;
607  subint_config_t *subint0;
608  u32 sw_if_index0;
609 
610  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
611  is_l20 = cached_is_l2;
612 
613  if (PREDICT_FALSE (cached_sw_if_index != sw_if_index0))
614  {
615  cached_sw_if_index = sw_if_index0;
616  hi = vnet_get_sup_hw_interface (vnm, sw_if_index0);
617  intf0 = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
618  subint0 = &intf0->untagged_subint;
619  cached_is_l2 = is_l20 = subint0->flags & SUBINT_CONFIG_L2;
620  }
621 
622  vnet_buffer (b0)->ethernet.start_of_ethernet_header =
623  b0->current_data;
624 
625  if (PREDICT_TRUE (is_l20 != 0))
626  {
627  next0 = em->l2_next;
628  vnet_buffer (b0)->l2.l2_len = sizeof (ethernet_header_t);
629  }
630  else
631  {
632  if (!ethernet_address_cast (e0->dst_address) &&
633  (hi->hw_address != 0) &&
634  !eth_mac_equal ((u8 *) e0, hi->hw_address))
635  error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
636  determine_next_node (em, variant, 0, type0, b0,
637  &error0, &next0);
638  vlib_buffer_advance (b0, sizeof (ethernet_header_t));
639  }
640  goto ship_it0;
641  }
642 
643  /* Slow-path for the tagged case */
644  parse_header (variant,
645  b0,
646  &type0,
647  &orig_type0, &outer_id0, &inner_id0, &match_flags0);
648 
649  old_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
650 
652  vnm,
653  old_sw_if_index0,
654  orig_type0,
655  outer_id0,
656  inner_id0,
657  &hi0,
658  &main_intf0, &vlan_intf0, &qinq_intf0);
659 
660  identify_subint (hi0,
661  b0,
662  match_flags0,
663  main_intf0,
664  vlan_intf0,
665  qinq_intf0, &new_sw_if_index0, &error0, &is_l20);
666 
667  // Save RX sw_if_index for later nodes
668  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
669  error0 !=
670  ETHERNET_ERROR_NONE ? old_sw_if_index0 : new_sw_if_index0;
671 
672  // Increment subinterface stats
673  // Note that interface-level counters have already been incremented
674  // prior to calling this function. Thus only subinterface counters
675  // are incremented here.
676  //
677  // Interface level counters include packets received on the main
678  // interface and all subinterfaces. Subinterface level counters
679  // include only those packets received on that subinterface
680  // Increment stats if the subint is valid and it is not the main intf
681  if ((new_sw_if_index0 != ~0)
682  && (new_sw_if_index0 != old_sw_if_index0))
683  {
684 
685  len0 = vlib_buffer_length_in_chain (vm, b0) + b0->current_data
686  - vnet_buffer (b0)->ethernet.start_of_ethernet_header;
687 
688  stats_n_packets += 1;
689  stats_n_bytes += len0;
690 
691  // Batch stat increments from the same subinterface so counters
692  // don't need to be incremented for every packet.
693  if (PREDICT_FALSE (new_sw_if_index0 != stats_sw_if_index))
694  {
695  stats_n_packets -= 1;
696  stats_n_bytes -= len0;
697 
698  if (new_sw_if_index0 != ~0)
702  cpu_index, new_sw_if_index0, 1, len0);
703  if (stats_n_packets > 0)
704  {
708  cpu_index,
709  stats_sw_if_index, stats_n_packets, stats_n_bytes);
710  stats_n_packets = stats_n_bytes = 0;
711  }
712  stats_sw_if_index = new_sw_if_index0;
713  }
714  }
715 
716  if (variant == ETHERNET_INPUT_VARIANT_NOT_L2)
717  is_l20 = 0;
718 
719  determine_next_node (em, variant, is_l20, type0, b0, &error0,
720  &next0);
721 
722  ship_it0:
723  b0->error = error_node->errors[error0];
724 
725  // verify speculative enqueue
726  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
727  to_next, n_left_to_next,
728  bi0, next0);
729  }
730 
731  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
732  }
733 
734  // Increment any remaining batched stats
735  if (stats_n_packets > 0)
736  {
740  cpu_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
741  node->runtime_data[0] = stats_sw_if_index;
742  }
743 
744  return from_frame->n_vectors;
745 }
746 
747 static uword
749  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
750 {
751  return ethernet_input_inline (vm, node, from_frame,
753 }
754 
755 static uword
757  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
758 {
759  return ethernet_input_inline (vm, node, from_frame,
761 }
762 
763 static uword
765  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
766 {
767  return ethernet_input_inline (vm, node, from_frame,
769 }
770 
771 
772 // Return the subinterface config struct for the given sw_if_index
773 // Also return via parameter the appropriate match flags for the
774 // configured number of tags.
775 // On error (unsupported or not ethernet) return 0.
776 static subint_config_t *
778  u32 sw_if_index,
779  u32 * flags, u32 * unsupported)
780 {
784  main_intf_t *main_intf;
785  vlan_table_t *vlan_table;
786  qinq_table_t *qinq_table;
787  subint_config_t *subint = 0;
788 
789  hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
790 
791  if (!hi || (hi->hw_class_index != ethernet_hw_interface_class.index))
792  {
793  *unsupported = 0;
794  goto done; // non-ethernet interface
795  }
796 
797  // ensure there's an entry for the main intf (shouldn't really be necessary)
799  main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
800 
801  // Locate the subint for the given ethernet config
802  si = vnet_get_sw_interface (vnm, sw_if_index);
803 
804  if (si->sub.eth.flags.default_sub)
805  {
806  subint = &main_intf->default_subint;
807  *flags = SUBINT_CONFIG_MATCH_0_TAG |
810  }
811  else if ((si->sub.eth.flags.no_tags) || (si->sub.eth.raw_flags == 0))
812  {
813  // if no flags are set then this is a main interface
814  // so treat as untagged
815  subint = &main_intf->untagged_subint;
816  *flags = SUBINT_CONFIG_MATCH_0_TAG;
817  }
818  else
819  {
820  // one or two tags
821  // first get the vlan table
822  if (si->sub.eth.flags.dot1ad)
823  {
824  if (main_intf->dot1ad_vlans == 0)
825  {
826  // Allocate a vlan table from the pool
827  pool_get (em->vlan_pool, vlan_table);
828  main_intf->dot1ad_vlans = vlan_table - em->vlan_pool;
829  }
830  else
831  {
832  // Get ptr to existing vlan table
833  vlan_table =
834  vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
835  }
836  }
837  else
838  { // dot1q
839  if (main_intf->dot1q_vlans == 0)
840  {
841  // Allocate a vlan table from the pool
842  pool_get (em->vlan_pool, vlan_table);
843  main_intf->dot1q_vlans = vlan_table - em->vlan_pool;
844  }
845  else
846  {
847  // Get ptr to existing vlan table
848  vlan_table =
849  vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
850  }
851  }
852 
853  if (si->sub.eth.flags.one_tag)
854  {
855  *flags = si->sub.eth.flags.exact_match ?
859 
860  if (si->sub.eth.flags.outer_vlan_id_any)
861  {
862  // not implemented yet
863  *unsupported = 1;
864  goto done;
865  }
866  else
867  {
868  // a single vlan, a common case
869  subint =
870  &vlan_table->vlans[si->sub.eth.
871  outer_vlan_id].single_tag_subint;
872  }
873 
874  }
875  else
876  {
877  // Two tags
878  *flags = si->sub.eth.flags.exact_match ?
881 
882  if (si->sub.eth.flags.outer_vlan_id_any
883  && si->sub.eth.flags.inner_vlan_id_any)
884  {
885  // not implemented yet
886  *unsupported = 1;
887  goto done;
888  }
889 
890  if (si->sub.eth.flags.inner_vlan_id_any)
891  {
892  // a specific outer and "any" inner
893  // don't need a qinq table for this
894  subint =
895  &vlan_table->vlans[si->sub.eth.
896  outer_vlan_id].inner_any_subint;
897  if (si->sub.eth.flags.exact_match)
898  {
899  *flags = SUBINT_CONFIG_MATCH_2_TAG;
900  }
901  else
902  {
903  *flags = SUBINT_CONFIG_MATCH_2_TAG |
905  }
906  }
907  else
908  {
909  // a specific outer + specifc innner vlan id, a common case
910 
911  // get the qinq table
912  if (vlan_table->vlans[si->sub.eth.outer_vlan_id].qinqs == 0)
913  {
914  // Allocate a qinq table from the pool
915  pool_get (em->qinq_pool, qinq_table);
916  vlan_table->vlans[si->sub.eth.outer_vlan_id].qinqs =
917  qinq_table - em->qinq_pool;
918  }
919  else
920  {
921  // Get ptr to existing qinq table
922  qinq_table =
924  vlan_table->vlans[si->sub.
925  eth.outer_vlan_id].
926  qinqs);
927  }
928  subint = &qinq_table->vlans[si->sub.eth.inner_vlan_id].subint;
929  }
930  }
931  }
932 
933 done:
934  return subint;
935 }
936 
937 clib_error_t *
939 {
940  subint_config_t *subint;
941  u32 dummy_flags;
942  u32 dummy_unsup;
943  clib_error_t *error = 0;
944 
945  // Find the config for this subinterface
946  subint =
947  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
948  &dummy_unsup);
949 
950  if (subint == 0)
951  {
952  // not implemented yet or not ethernet
953  goto done;
954  }
955 
956  subint->sw_if_index =
957  ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? sw_if_index : ~0);
958 
959 done:
960  return error;
961 }
962 
964 
965 
966 // Set the L2/L3 mode for the subinterface
967 void
969 {
970  subint_config_t *subint;
971  u32 dummy_flags;
972  u32 dummy_unsup;
973  int is_port;
974  vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, sw_if_index);
975 
976  is_port = !(sw->type == VNET_SW_INTERFACE_TYPE_SUB);
977 
978  // Find the config for this subinterface
979  subint =
980  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
981  &dummy_unsup);
982 
983  if (subint == 0)
984  {
985  // unimplemented or not ethernet
986  goto done;
987  }
988 
989  // Double check that the config we found is for our interface (or the interface is down)
990  ASSERT ((subint->sw_if_index == sw_if_index) | (subint->sw_if_index == ~0));
991 
992  if (l2)
993  {
994  subint->flags |= SUBINT_CONFIG_L2;
995  if (is_port)
996  subint->flags |=
999  }
1000  else
1001  {
1002  subint->flags &= ~SUBINT_CONFIG_L2;
1003  if (is_port)
1004  subint->flags &=
1007  }
1008 
1009 done:
1010  return;
1011 }
1012 
1013 /*
1014  * Set the L2/L3 mode for the subinterface regardless of port
1015  */
1016 void
1018  u32 sw_if_index, u32 l2)
1019 {
1020  subint_config_t *subint;
1021  u32 dummy_flags;
1022  u32 dummy_unsup;
1023 
1024  /* Find the config for this subinterface */
1025  subint =
1026  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
1027  &dummy_unsup);
1028 
1029  if (subint == 0)
1030  {
1031  /* unimplemented or not ethernet */
1032  goto done;
1033  }
1034 
1035  /*
1036  * Double check that the config we found is for our interface (or the
1037  * interface is down)
1038  */
1039  ASSERT ((subint->sw_if_index == sw_if_index) | (subint->sw_if_index == ~0));
1040 
1041  if (l2)
1042  {
1043  subint->flags |= SUBINT_CONFIG_L2;
1044  }
1045  else
1046  {
1047  subint->flags &= ~SUBINT_CONFIG_L2;
1048  }
1049 
1050 done:
1051  return;
1052 }
1053 
1054 static clib_error_t *
1056  u32 sw_if_index, u32 is_create)
1057 {
1058  clib_error_t *error = 0;
1059  subint_config_t *subint;
1060  u32 match_flags;
1061  u32 unsupported = 0;
1062 
1063  // Find the config for this subinterface
1064  subint =
1065  ethernet_sw_interface_get_config (vnm, sw_if_index, &match_flags,
1066  &unsupported);
1067 
1068  if (subint == 0)
1069  {
1070  // not implemented yet or not ethernet
1071  if (unsupported)
1072  {
1073  // this is the NYI case
1074  error = clib_error_return (0, "not implemented yet");
1075  }
1076  goto done;
1077  }
1078 
1079  if (!is_create)
1080  {
1081  subint->flags = 0;
1082  return error;
1083  }
1084 
1085  // Initialize the subint
1086  if (subint->flags & SUBINT_CONFIG_VALID)
1087  {
1088  // Error vlan already in use
1089  error = clib_error_return (0, "vlan is already in use");
1090  }
1091  else
1092  {
1093  // Note that config is L3 by defaulty
1094  subint->flags = SUBINT_CONFIG_VALID | match_flags;
1095  subint->sw_if_index = ~0; // because interfaces are initially down
1096  }
1097 
1098 done:
1099  return error;
1100 }
1101 
1103 
1104 static char *ethernet_error_strings[] = {
1105 #define ethernet_error(n,c,s) s,
1106 #include "error.def"
1107 #undef ethernet_error
1108 };
1109 
1110 /* *INDENT-OFF* */
1112  .function = ethernet_input,
1113  .name = "ethernet-input",
1114  /* Takes a vector of packets. */
1115  .vector_size = sizeof (u32),
1116  .n_errors = ETHERNET_N_ERROR,
1117  .error_strings = ethernet_error_strings,
1118  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1119  .next_nodes = {
1120 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1122 #undef _
1123  },
1124  .format_buffer = format_ethernet_header_with_length,
1125  .format_trace = format_ethernet_input_trace,
1126  .unformat_buffer = unformat_ethernet_header,
1127 };
1128 /* *INDENT-ON* */
1129 
1130 /* *INDENT-OFF* */
1132 /* *INDENT-ON* */
1133 
1134 /* *INDENT-OFF* */
1136  .function = ethernet_input_type,
1137  .name = "ethernet-input-type",
1138  /* Takes a vector of packets. */
1139  .vector_size = sizeof (u32),
1140  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1141  .next_nodes = {
1142 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1144 #undef _
1145  },
1146 };
1147 /* *INDENT-ON* */
1148 
1149 /* *INDENT-OFF* */
1151 /* *INDENT-ON* */
1152 
1153 /* *INDENT-OFF* */
1155  .function = ethernet_input_not_l2,
1156  .name = "ethernet-input-not-l2",
1157  /* Takes a vector of packets. */
1158  .vector_size = sizeof (u32),
1159  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1160  .next_nodes = {
1161 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1163 #undef _
1164  },
1165 };
1166 /* *INDENT-ON* */
1167 
1168 
1169 /* *INDENT-OFF* */
1172 /* *INDENT-ON* */
1173 
1174 
1175 void
1177  vnet_hw_interface_t * hi, u32 enable)
1178 {
1179  // Insure all packets go to ethernet-input (i.e. untagged ipv4 packets
1180  // don't go directly to ip4-input)
1182  (vnm, hi->hw_if_index, enable ? ethernet_input_node.index : ~0);
1183 }
1184 
1185 
1186 /*
1187  * Initialization and registration for the next_by_ethernet structure
1188  */
1189 
1190 clib_error_t *
1192 {
1194  ( /* elt bytes */ sizeof (l3_next->input_next_by_type[0]),
1195  /* bits in index */ BITS (((ethernet_header_t *) 0)->type));
1196 
1198  ETHERNET_INPUT_NEXT_DROP);
1200  ETHERNET_INPUT_NEXT_PUNT);
1201  l3_next->sparse_index_by_input_next_index[ETHERNET_INPUT_NEXT_DROP] =
1203  l3_next->sparse_index_by_input_next_index[ETHERNET_INPUT_NEXT_PUNT] =
1205 
1206  /*
1207  * Make sure we don't wipe out an ethernet registration by mistake
1208  * Can happen if init function ordering constraints are missing.
1209  */
1210  if (CLIB_DEBUG > 0)
1211  {
1214  }
1215 
1216  return 0;
1217 }
1218 
1219 // Add an ethertype -> next index mapping to the structure
1220 clib_error_t *
1222  u32 ethertype, u32 next_index)
1223 {
1224  u32 i;
1225  u16 *n;
1227 
1228  if (CLIB_DEBUG > 0)
1229  {
1232  }
1233 
1234  /* Setup ethernet type -> next index sparse vector mapping. */
1235  n = sparse_vec_validate (l3_next->input_next_by_type, ethertype);
1236  n[0] = next_index;
1237 
1238  /* Rebuild next index -> sparse index inverse mapping when sparse vector
1239  is updated. */
1240  vec_validate (l3_next->sparse_index_by_input_next_index, next_index);
1241  for (i = 1; i < vec_len (l3_next->input_next_by_type); i++)
1242  l3_next->
1243  sparse_index_by_input_next_index[l3_next->input_next_by_type[i]] = i;
1244 
1245  // do not allow the cached next index's to be updated if L3
1246  // redirect is enabled, as it will have overwritten them
1247  if (!em->redirect_l3)
1248  {
1249  // Cache common ethertypes directly
1250  if (ethertype == ETHERNET_TYPE_IP4)
1251  {
1252  l3_next->input_next_ip4 = next_index;
1253  }
1254  else if (ethertype == ETHERNET_TYPE_IP6)
1255  {
1256  l3_next->input_next_ip6 = next_index;
1257  }
1258  else if (ethertype == ETHERNET_TYPE_MPLS_UNICAST)
1259  {
1260  l3_next->input_next_mpls = next_index;
1261  }
1262  }
1263  return 0;
1264 }
1265 
1266 
1267 static clib_error_t *
1269 {
1271  __attribute__ ((unused)) vlan_table_t *invalid_vlan_table;
1272  __attribute__ ((unused)) qinq_table_t *invalid_qinq_table;
1273 
1277 
1279 
1280  // Initialize pools and vector for vlan parsing
1281  vec_validate (em->main_intfs, 10); // 10 main interfaces
1282  pool_alloc (em->vlan_pool, 10);
1283  pool_alloc (em->qinq_pool, 1);
1284 
1285  // The first vlan pool will always be reserved for an invalid table
1286  pool_get (em->vlan_pool, invalid_vlan_table); // first id = 0
1287  // The first qinq pool will always be reserved for an invalid table
1288  pool_get (em->qinq_pool, invalid_qinq_table); // first id = 0
1289 
1290  return 0;
1291 }
1292 
1294 
1295 void
1297  ethernet_type_t type, u32 node_index)
1298 {
1301  u32 i;
1302 
1303  {
1305  if (error)
1306  clib_error_report (error);
1307  }
1308 
1309  ti = ethernet_get_type_info (em, type);
1310  ti->node_index = node_index;
1311  ti->next_index = vlib_node_add_next (vm,
1312  ethernet_input_node.index, node_index);
1313  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1314  ASSERT (i == ti->next_index);
1315 
1316  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1317  ASSERT (i == ti->next_index);
1318 
1319  // Add the L3 node for this ethertype to the next nodes structure
1320  next_by_ethertype_register (&em->l3_next, type, ti->next_index);
1321 
1322  // Call the registration functions for other nodes that want a mapping
1323  l2bvi_register_input_type (vm, type, node_index);
1324 }
1325 
1326 void
1328 {
1330  u32 i;
1331 
1332  em->l2_next =
1333  vlib_node_add_next (vm, ethernet_input_node.index, node_index);
1334 
1335  /*
1336  * Even if we never use these arcs, we have to align the next indices...
1337  */
1338  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1339 
1340  ASSERT (i == em->l2_next);
1341 
1342  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1343  ASSERT (i == em->l2_next);
1344 }
1345 
1346 // Register a next node for L3 redirect, and enable L3 redirect
1347 void
1349 {
1351  u32 i;
1352 
1353  em->redirect_l3 = 1;
1355  ethernet_input_node.index,
1356  node_index);
1357  /*
1358  * Change the cached next nodes to the redirect node
1359  */
1363 
1364  /*
1365  * Even if we never use these arcs, we have to align the next indices...
1366  */
1367  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1368 
1369  ASSERT (i == em->redirect_l3_next);
1370 
1371  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1372 
1373  ASSERT (i == em->redirect_l3_next);
1374 }
1375 
1376 /*
1377  * fd.io coding-style-patch-verification: ON
1378  *
1379  * Local Variables:
1380  * eval: (c-set-style "gnu")
1381  * End:
1382  */
#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:182
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:284
sll srl srl sll sra u16x4 i
Definition: vector_sse2.h:343
#define CLIB_UNUSED(x)
Definition: clib.h:79
u8 runtime_data[0]
Function dependent node-runtime data.
Definition: node.h:463
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:57
#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:1093
void ethernet_register_l2_input(vlib_main_t *vm, u32 node_index)
Definition: node.c:1327
#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:777
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:418
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:418
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:1062
static clib_error_t * ethernet_sw_interface_add_del(vnet_main_t *vnm, u32 sw_if_index, u32 is_create)
Definition: node.c:1055
struct vnet_sub_interface_t::@117::@118::@120 flags
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:1191
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:626
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:111
#define vlib_call_init_function(vm, x)
Definition: init.h:162
static char * ethernet_error_strings[]
Definition: node.c:1104
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:1268
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:569
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:938
static uword ethernet_input_not_l2(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:764
uword os_get_cpu_number(void)
Definition: unix-misc.c:224
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:1135
#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:350
#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:344
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:276
static uword ethernet_input_type(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:756
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
struct vnet_sub_interface_t::@117 eth
#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:455
#define SUBINT_CONFIG_L2
Definition: ethernet.h:171
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:536
vlan_table_t * vlan_pool
Definition: ethernet.h:255
#define ASSERT(truth)
unsigned int u32
Definition: types.h:88
static void vlib_increment_combined_counter(vlib_combined_counter_main_t *cm, u32 cpu_index, u32 index, u64 n_packets, u64 n_bytes)
Increment a combined counter.
Definition: counter.h:211
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:1348
void ethernet_sw_interface_set_l2_mode_noport(vnet_main_t *vnm, u32 sw_if_index, u32 l2)
Definition: node.c:1017
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:224
void ethernet_register_input_type(vlib_main_t *vm, ethernet_type_t type, u32 node_index)
Definition: node.c:1296
#define clib_error_report(e)
Definition: error.h:125
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:259
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:1221
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:1154
#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:253
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:968
static uword ethernet_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:748
#define vnet_buffer(b)
Definition: buffer.h:294
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:143
vnet_sw_interface_type_t type
Definition: interface.h:531
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:449
next_by_ethertype_t l3_next
Definition: ethernet.h:233
u32 flags
Definition: vhost-user.h:78
#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:1170
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