FD.io VPP  v18.07-rc0-415-g6c78436
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>
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  // record the L2 len and reset the buffer so the L2 header is preserved
240  u32 eth_start = vnet_buffer (b0)->l2_hdr_offset;
241  vnet_buffer (b0)->l2.l2_len = b0->current_data - eth_start;
242  *next0 = em->l2_next;
243  ASSERT (vnet_buffer (b0)->l2.l2_len ==
246 
247  // check for common IP/MPLS ethertypes
248  }
249  else if (type0 == ETHERNET_TYPE_IP4)
250  {
251  *next0 = em->l3_next.input_next_ip4;
252  }
253  else if (type0 == ETHERNET_TYPE_IP6)
254  {
255  *next0 = em->l3_next.input_next_ip6;
256  }
257  else if (type0 == ETHERNET_TYPE_MPLS)
258  {
259  *next0 = em->l3_next.input_next_mpls;
260 
261  }
262  else if (em->redirect_l3)
263  {
264  // L3 Redirect is on, the cached common next nodes will be
265  // pointing to the redirect node, catch the uncommon types here
266  *next0 = em->redirect_l3_next;
267  }
268  else
269  {
270  // uncommon ethertype, check table
271  u32 i0;
272  i0 = sparse_vec_index (em->l3_next.input_next_by_type, type0);
273  *next0 = vec_elt (em->l3_next.input_next_by_type, i0);
274  *error0 =
275  i0 ==
276  SPARSE_VEC_INVALID_INDEX ? ETHERNET_ERROR_UNKNOWN_TYPE : *error0;
277 
278  // The table is not populated with LLC values, so check that now.
279  // If variant is variant_ethernet then we came from LLC processing. Don't
280  // go back there; drop instead using by keeping the drop/bad table result.
281  if ((type0 < 0x600) && (variant == ETHERNET_INPUT_VARIANT_ETHERNET))
282  {
283  *next0 = ETHERNET_INPUT_NEXT_LLC;
284  }
285  }
286 }
287 
290  vlib_node_runtime_t * node,
291  vlib_frame_t * from_frame,
292  ethernet_input_variant_t variant)
293 {
294  vnet_main_t *vnm = vnet_get_main ();
296  vlib_node_runtime_t *error_node;
297  u32 n_left_from, next_index, *from, *to_next;
298  u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
299  u32 thread_index = vlib_get_thread_index ();
300  u32 cached_sw_if_index = ~0;
301  u32 cached_is_l2 = 0; /* shut up gcc */
302  vnet_hw_interface_t *hi = NULL; /* used for main interface only */
303 
304  if (variant != ETHERNET_INPUT_VARIANT_ETHERNET)
305  error_node = vlib_node_get_runtime (vm, ethernet_input_node.index);
306  else
307  error_node = node;
308 
309  from = vlib_frame_vector_args (from_frame);
310  n_left_from = from_frame->n_vectors;
311 
312  if (node->flags & VLIB_NODE_FLAG_TRACE)
314  from,
315  n_left_from,
316  sizeof (from[0]),
317  sizeof (ethernet_input_trace_t));
318 
319  next_index = node->cached_next_index;
320  stats_sw_if_index = node->runtime_data[0];
321  stats_n_packets = stats_n_bytes = 0;
322 
323  while (n_left_from > 0)
324  {
325  u32 n_left_to_next;
326 
327  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
328 
329  while (n_left_from >= 4 && n_left_to_next >= 2)
330  {
331  u32 bi0, bi1;
332  vlib_buffer_t *b0, *b1;
333  u8 next0, next1, error0, error1;
334  u16 type0, orig_type0, type1, orig_type1;
335  u16 outer_id0, inner_id0, outer_id1, inner_id1;
336  u32 match_flags0, match_flags1;
337  u32 old_sw_if_index0, new_sw_if_index0, len0, old_sw_if_index1,
338  new_sw_if_index1, len1;
339  vnet_hw_interface_t *hi0, *hi1;
340  main_intf_t *main_intf0, *main_intf1;
341  vlan_intf_t *vlan_intf0, *vlan_intf1;
342  qinq_intf_t *qinq_intf0, *qinq_intf1;
343  u32 is_l20, is_l21;
344  ethernet_header_t *e0, *e1;
345 
346  /* Prefetch next iteration. */
347  {
348  vlib_buffer_t *b2, *b3;
349 
350  b2 = vlib_get_buffer (vm, from[2]);
351  b3 = vlib_get_buffer (vm, from[3]);
352 
353  vlib_prefetch_buffer_header (b2, STORE);
354  vlib_prefetch_buffer_header (b3, STORE);
355 
356  CLIB_PREFETCH (b2->data, sizeof (ethernet_header_t), LOAD);
357  CLIB_PREFETCH (b3->data, sizeof (ethernet_header_t), LOAD);
358  }
359 
360  bi0 = from[0];
361  bi1 = from[1];
362  to_next[0] = bi0;
363  to_next[1] = bi1;
364  from += 2;
365  to_next += 2;
366  n_left_to_next -= 2;
367  n_left_from -= 2;
368 
369  b0 = vlib_get_buffer (vm, bi0);
370  b1 = vlib_get_buffer (vm, bi1);
371 
372  error0 = error1 = ETHERNET_ERROR_NONE;
373  e0 = vlib_buffer_get_current (b0);
374  type0 = clib_net_to_host_u16 (e0->type);
375  e1 = vlib_buffer_get_current (b1);
376  type1 = clib_net_to_host_u16 (e1->type);
377 
378  /* Speed-path for the untagged case */
381  type1)))
382  {
383  main_intf_t *intf0;
384  subint_config_t *subint0;
385  u32 sw_if_index0, sw_if_index1;
386 
387  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
388  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
389  is_l20 = cached_is_l2;
390 
391  /* This is probably wholly unnecessary */
392  if (PREDICT_FALSE (sw_if_index0 != sw_if_index1))
393  goto slowpath;
394 
395  /* Now sw_if_index0 == sw_if_index1 */
396  if (PREDICT_FALSE (cached_sw_if_index != sw_if_index0))
397  {
398  cached_sw_if_index = sw_if_index0;
399  hi = vnet_get_sup_hw_interface (vnm, sw_if_index0);
400  intf0 = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
401  subint0 = &intf0->untagged_subint;
402  cached_is_l2 = is_l20 = subint0->flags & SUBINT_CONFIG_L2;
403  }
404 
405  vnet_buffer (b0)->l2_hdr_offset = b0->current_data;
406  vnet_buffer (b1)->l2_hdr_offset = b1->current_data;
407  vnet_buffer (b0)->l3_hdr_offset =
408  vnet_buffer (b0)->l2_hdr_offset + sizeof (ethernet_header_t);
409  vnet_buffer (b1)->l3_hdr_offset =
410  vnet_buffer (b1)->l2_hdr_offset + sizeof (ethernet_header_t);
411  b0->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
412  VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
413  b1->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
414  VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
415 
416  if (PREDICT_TRUE (is_l20 != 0))
417  {
418  next0 = em->l2_next;
419  vnet_buffer (b0)->l2.l2_len = sizeof (ethernet_header_t);
420  next1 = em->l2_next;
421  vnet_buffer (b1)->l2.l2_len = sizeof (ethernet_header_t);
422  }
423  else
424  {
425  if (!ethernet_address_cast (e0->dst_address) &&
426  (hi->hw_address != 0) &&
427  !eth_mac_equal ((u8 *) e0, hi->hw_address))
428  error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
429  if (!ethernet_address_cast (e1->dst_address) &&
430  (hi->hw_address != 0) &&
431  !eth_mac_equal ((u8 *) e1, hi->hw_address))
432  error1 = ETHERNET_ERROR_L3_MAC_MISMATCH;
433  vlib_buffer_advance (b0, sizeof (ethernet_header_t));
434  determine_next_node (em, variant, 0, type0, b0,
435  &error0, &next0);
436  vlib_buffer_advance (b1, sizeof (ethernet_header_t));
437  determine_next_node (em, variant, 0, type1, b1,
438  &error1, &next1);
439  }
440  goto ship_it01;
441  }
442 
443  /* Slow-path for the tagged case */
444  slowpath:
445  parse_header (variant,
446  b0,
447  &type0,
448  &orig_type0, &outer_id0, &inner_id0, &match_flags0);
449 
450  parse_header (variant,
451  b1,
452  &type1,
453  &orig_type1, &outer_id1, &inner_id1, &match_flags1);
454 
455  old_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
456  old_sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
457 
459  vnm,
460  old_sw_if_index0,
461  orig_type0,
462  outer_id0,
463  inner_id0,
464  &hi0,
465  &main_intf0, &vlan_intf0, &qinq_intf0);
466 
468  vnm,
469  old_sw_if_index1,
470  orig_type1,
471  outer_id1,
472  inner_id1,
473  &hi1,
474  &main_intf1, &vlan_intf1, &qinq_intf1);
475 
476  identify_subint (hi0,
477  b0,
478  match_flags0,
479  main_intf0,
480  vlan_intf0,
481  qinq_intf0, &new_sw_if_index0, &error0, &is_l20);
482 
483  identify_subint (hi1,
484  b1,
485  match_flags1,
486  main_intf1,
487  vlan_intf1,
488  qinq_intf1, &new_sw_if_index1, &error1, &is_l21);
489 
490  // Save RX sw_if_index for later nodes
491  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
492  error0 !=
493  ETHERNET_ERROR_NONE ? old_sw_if_index0 : new_sw_if_index0;
494  vnet_buffer (b1)->sw_if_index[VLIB_RX] =
495  error1 !=
496  ETHERNET_ERROR_NONE ? old_sw_if_index1 : new_sw_if_index1;
497 
498  // Check if there is a stat to take (valid and non-main sw_if_index for pkt 0 or pkt 1)
499  if (((new_sw_if_index0 != ~0)
500  && (new_sw_if_index0 != old_sw_if_index0))
501  || ((new_sw_if_index1 != ~0)
502  && (new_sw_if_index1 != old_sw_if_index1)))
503  {
504 
505  len0 = vlib_buffer_length_in_chain (vm, b0) + b0->current_data
506  - vnet_buffer (b0)->l2_hdr_offset;
507  len1 = vlib_buffer_length_in_chain (vm, b1) + b1->current_data
508  - vnet_buffer (b1)->l2_hdr_offset;
509 
510  stats_n_packets += 2;
511  stats_n_bytes += len0 + len1;
512 
513  if (PREDICT_FALSE
514  (!(new_sw_if_index0 == stats_sw_if_index
515  && new_sw_if_index1 == stats_sw_if_index)))
516  {
517  stats_n_packets -= 2;
518  stats_n_bytes -= len0 + len1;
519 
520  if (new_sw_if_index0 != old_sw_if_index0
521  && new_sw_if_index0 != ~0)
523  interface_main.combined_sw_if_counters
524  +
526  thread_index,
527  new_sw_if_index0, 1,
528  len0);
529  if (new_sw_if_index1 != old_sw_if_index1
530  && new_sw_if_index1 != ~0)
532  interface_main.combined_sw_if_counters
533  +
535  thread_index,
536  new_sw_if_index1, 1,
537  len1);
538 
539  if (new_sw_if_index0 == new_sw_if_index1)
540  {
541  if (stats_n_packets > 0)
542  {
546  thread_index,
547  stats_sw_if_index,
548  stats_n_packets, stats_n_bytes);
549  stats_n_packets = stats_n_bytes = 0;
550  }
551  stats_sw_if_index = new_sw_if_index0;
552  }
553  }
554  }
555 
556  if (variant == ETHERNET_INPUT_VARIANT_NOT_L2)
557  is_l20 = is_l21 = 0;
558 
559  determine_next_node (em, variant, is_l20, type0, b0, &error0,
560  &next0);
561  determine_next_node (em, variant, is_l21, type1, b1, &error1,
562  &next1);
563  vnet_buffer (b0)->l3_hdr_offset = vnet_buffer (b0)->l2_hdr_offset +
564  vnet_buffer (b0)->l2.l2_len;
565  vnet_buffer (b1)->l3_hdr_offset = vnet_buffer (b1)->l2_hdr_offset +
566  vnet_buffer (b1)->l2.l2_len;
567  b0->flags |= VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
568  b1->flags |= VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
569 
570  ship_it01:
571  b0->error = error_node->errors[error0];
572  b1->error = error_node->errors[error1];
573 
574  // verify speculative enqueue
575  vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
576  n_left_to_next, bi0, bi1, next0,
577  next1);
578  }
579 
580  while (n_left_from > 0 && n_left_to_next > 0)
581  {
582  u32 bi0;
583  vlib_buffer_t *b0;
584  u8 error0, next0;
585  u16 type0, orig_type0;
586  u16 outer_id0, inner_id0;
587  u32 match_flags0;
588  u32 old_sw_if_index0, new_sw_if_index0, len0;
589  vnet_hw_interface_t *hi0;
590  main_intf_t *main_intf0;
591  vlan_intf_t *vlan_intf0;
592  qinq_intf_t *qinq_intf0;
593  ethernet_header_t *e0;
594  u32 is_l20;
595 
596  // Prefetch next iteration
597  if (n_left_from > 1)
598  {
599  vlib_buffer_t *p2;
600 
601  p2 = vlib_get_buffer (vm, from[1]);
602  vlib_prefetch_buffer_header (p2, STORE);
604  }
605 
606  bi0 = from[0];
607  to_next[0] = bi0;
608  from += 1;
609  to_next += 1;
610  n_left_from -= 1;
611  n_left_to_next -= 1;
612 
613  b0 = vlib_get_buffer (vm, bi0);
614 
615  error0 = ETHERNET_ERROR_NONE;
616  e0 = vlib_buffer_get_current (b0);
617  type0 = clib_net_to_host_u16 (e0->type);
618 
619  /* Speed-path for the untagged case */
621  && !ethernet_frame_is_tagged (type0)))
622  {
623  main_intf_t *intf0;
624  subint_config_t *subint0;
625  u32 sw_if_index0;
626 
627  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
628  is_l20 = cached_is_l2;
629 
630  if (PREDICT_FALSE (cached_sw_if_index != sw_if_index0))
631  {
632  cached_sw_if_index = sw_if_index0;
633  hi = vnet_get_sup_hw_interface (vnm, sw_if_index0);
634  intf0 = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
635  subint0 = &intf0->untagged_subint;
636  cached_is_l2 = is_l20 = subint0->flags & SUBINT_CONFIG_L2;
637  }
638 
639  vnet_buffer (b0)->l2_hdr_offset = b0->current_data;
640  vnet_buffer (b0)->l3_hdr_offset =
641  vnet_buffer (b0)->l2_hdr_offset + sizeof (ethernet_header_t);
642  b0->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
643  VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
644 
645  if (PREDICT_TRUE (is_l20 != 0))
646  {
647  next0 = em->l2_next;
648  vnet_buffer (b0)->l2.l2_len = sizeof (ethernet_header_t);
649  }
650  else
651  {
652  if (!ethernet_address_cast (e0->dst_address) &&
653  (hi->hw_address != 0) &&
654  !eth_mac_equal ((u8 *) e0, hi->hw_address))
655  error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
656  determine_next_node (em, variant, 0, type0, b0,
657  &error0, &next0);
658  vlib_buffer_advance (b0, sizeof (ethernet_header_t));
659  }
660  goto ship_it0;
661  }
662 
663  /* Slow-path for the tagged case */
664  parse_header (variant,
665  b0,
666  &type0,
667  &orig_type0, &outer_id0, &inner_id0, &match_flags0);
668 
669  old_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
670 
672  vnm,
673  old_sw_if_index0,
674  orig_type0,
675  outer_id0,
676  inner_id0,
677  &hi0,
678  &main_intf0, &vlan_intf0, &qinq_intf0);
679 
680  identify_subint (hi0,
681  b0,
682  match_flags0,
683  main_intf0,
684  vlan_intf0,
685  qinq_intf0, &new_sw_if_index0, &error0, &is_l20);
686 
687  // Save RX sw_if_index for later nodes
688  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
689  error0 !=
690  ETHERNET_ERROR_NONE ? old_sw_if_index0 : new_sw_if_index0;
691 
692  // Increment subinterface stats
693  // Note that interface-level counters have already been incremented
694  // prior to calling this function. Thus only subinterface counters
695  // are incremented here.
696  //
697  // Interface level counters include packets received on the main
698  // interface and all subinterfaces. Subinterface level counters
699  // include only those packets received on that subinterface
700  // Increment stats if the subint is valid and it is not the main intf
701  if ((new_sw_if_index0 != ~0)
702  && (new_sw_if_index0 != old_sw_if_index0))
703  {
704 
705  len0 = vlib_buffer_length_in_chain (vm, b0) + b0->current_data
706  - vnet_buffer (b0)->l2_hdr_offset;
707 
708  stats_n_packets += 1;
709  stats_n_bytes += len0;
710 
711  // Batch stat increments from the same subinterface so counters
712  // don't need to be incremented for every packet.
713  if (PREDICT_FALSE (new_sw_if_index0 != stats_sw_if_index))
714  {
715  stats_n_packets -= 1;
716  stats_n_bytes -= len0;
717 
718  if (new_sw_if_index0 != ~0)
722  thread_index, new_sw_if_index0, 1, len0);
723  if (stats_n_packets > 0)
724  {
728  thread_index,
729  stats_sw_if_index, stats_n_packets, stats_n_bytes);
730  stats_n_packets = stats_n_bytes = 0;
731  }
732  stats_sw_if_index = new_sw_if_index0;
733  }
734  }
735 
736  if (variant == ETHERNET_INPUT_VARIANT_NOT_L2)
737  is_l20 = 0;
738 
739  determine_next_node (em, variant, is_l20, type0, b0, &error0,
740  &next0);
741  vnet_buffer (b0)->l3_hdr_offset = vnet_buffer (b0)->l2_hdr_offset +
742  vnet_buffer (b0)->l2.l2_len;
743  b0->flags |= VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
744 
745  ship_it0:
746  b0->error = error_node->errors[error0];
747 
748  // verify speculative enqueue
749  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
750  to_next, n_left_to_next,
751  bi0, next0);
752  }
753 
754  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
755  }
756 
757  // Increment any remaining batched stats
758  if (stats_n_packets > 0)
759  {
763  thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
764  node->runtime_data[0] = stats_sw_if_index;
765  }
766 
767  return from_frame->n_vectors;
768 }
769 
770 static uword
772  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
773 {
774  return ethernet_input_inline (vm, node, from_frame,
776 }
777 
778 static uword
780  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
781 {
782  return ethernet_input_inline (vm, node, from_frame,
784 }
785 
786 static uword
788  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
789 {
790  return ethernet_input_inline (vm, node, from_frame,
792 }
793 
794 
795 // Return the subinterface config struct for the given sw_if_index
796 // Also return via parameter the appropriate match flags for the
797 // configured number of tags.
798 // On error (unsupported or not ethernet) return 0.
799 static subint_config_t *
801  u32 sw_if_index,
802  u32 * flags, u32 * unsupported)
803 {
807  main_intf_t *main_intf;
808  vlan_table_t *vlan_table;
809  qinq_table_t *qinq_table;
810  subint_config_t *subint = 0;
811 
812  hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
813 
814  if (!hi || (hi->hw_class_index != ethernet_hw_interface_class.index))
815  {
816  *unsupported = 0;
817  goto done; // non-ethernet interface
818  }
819 
820  // ensure there's an entry for the main intf (shouldn't really be necessary)
822  main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
823 
824  // Locate the subint for the given ethernet config
825  si = vnet_get_sw_interface (vnm, sw_if_index);
826 
827  if (si->type == VNET_SW_INTERFACE_TYPE_P2P)
828  {
829  p2p_ethernet_main_t *p2pm = &p2p_main;
830  u32 p2pe_sw_if_index =
832  if (p2pe_sw_if_index == ~0)
833  {
834  pool_get (p2pm->p2p_subif_pool, subint);
835  si->p2p.pool_index = subint - p2pm->p2p_subif_pool;
836  }
837  else
838  subint = vec_elt_at_index (p2pm->p2p_subif_pool, si->p2p.pool_index);
839  *flags = SUBINT_CONFIG_P2P;
840  }
841  else if (si->sub.eth.flags.default_sub)
842  {
843  subint = &main_intf->default_subint;
844  *flags = SUBINT_CONFIG_MATCH_0_TAG |
847  }
848  else if ((si->sub.eth.flags.no_tags) || (si->sub.eth.raw_flags == 0))
849  {
850  // if no flags are set then this is a main interface
851  // so treat as untagged
852  subint = &main_intf->untagged_subint;
853  *flags = SUBINT_CONFIG_MATCH_0_TAG;
854  }
855  else
856  {
857  // one or two tags
858  // first get the vlan table
859  if (si->sub.eth.flags.dot1ad)
860  {
861  if (main_intf->dot1ad_vlans == 0)
862  {
863  // Allocate a vlan table from the pool
864  pool_get (em->vlan_pool, vlan_table);
865  main_intf->dot1ad_vlans = vlan_table - em->vlan_pool;
866  }
867  else
868  {
869  // Get ptr to existing vlan table
870  vlan_table =
871  vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
872  }
873  }
874  else
875  { // dot1q
876  if (main_intf->dot1q_vlans == 0)
877  {
878  // Allocate a vlan table from the pool
879  pool_get (em->vlan_pool, vlan_table);
880  main_intf->dot1q_vlans = vlan_table - em->vlan_pool;
881  }
882  else
883  {
884  // Get ptr to existing vlan table
885  vlan_table =
886  vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
887  }
888  }
889 
890  if (si->sub.eth.flags.one_tag)
891  {
892  *flags = si->sub.eth.flags.exact_match ?
896 
897  if (si->sub.eth.flags.outer_vlan_id_any)
898  {
899  // not implemented yet
900  *unsupported = 1;
901  goto done;
902  }
903  else
904  {
905  // a single vlan, a common case
906  subint =
907  &vlan_table->vlans[si->sub.eth.
908  outer_vlan_id].single_tag_subint;
909  }
910 
911  }
912  else
913  {
914  // Two tags
915  *flags = si->sub.eth.flags.exact_match ?
918 
919  if (si->sub.eth.flags.outer_vlan_id_any
920  && si->sub.eth.flags.inner_vlan_id_any)
921  {
922  // not implemented yet
923  *unsupported = 1;
924  goto done;
925  }
926 
927  if (si->sub.eth.flags.inner_vlan_id_any)
928  {
929  // a specific outer and "any" inner
930  // don't need a qinq table for this
931  subint =
932  &vlan_table->vlans[si->sub.eth.
933  outer_vlan_id].inner_any_subint;
934  if (si->sub.eth.flags.exact_match)
935  {
936  *flags = SUBINT_CONFIG_MATCH_2_TAG;
937  }
938  else
939  {
940  *flags = SUBINT_CONFIG_MATCH_2_TAG |
942  }
943  }
944  else
945  {
946  // a specific outer + specifc innner vlan id, a common case
947 
948  // get the qinq table
949  if (vlan_table->vlans[si->sub.eth.outer_vlan_id].qinqs == 0)
950  {
951  // Allocate a qinq table from the pool
952  pool_get (em->qinq_pool, qinq_table);
953  vlan_table->vlans[si->sub.eth.outer_vlan_id].qinqs =
954  qinq_table - em->qinq_pool;
955  }
956  else
957  {
958  // Get ptr to existing qinq table
959  qinq_table =
961  vlan_table->vlans[si->sub.
962  eth.outer_vlan_id].
963  qinqs);
964  }
965  subint = &qinq_table->vlans[si->sub.eth.inner_vlan_id].subint;
966  }
967  }
968  }
969 
970 done:
971  return subint;
972 }
973 
974 clib_error_t *
976 {
977  subint_config_t *subint;
978  u32 dummy_flags;
979  u32 dummy_unsup;
980  clib_error_t *error = 0;
981 
982  // Find the config for this subinterface
983  subint =
984  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
985  &dummy_unsup);
986 
987  if (subint == 0)
988  {
989  // not implemented yet or not ethernet
990  goto done;
991  }
992 
993  subint->sw_if_index =
994  ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? sw_if_index : ~0);
995 
996 done:
997  return error;
998 }
999 
1001 
1002 
1003 // Set the L2/L3 mode for the subinterface
1004 void
1006 {
1007  subint_config_t *subint;
1008  u32 dummy_flags;
1009  u32 dummy_unsup;
1010  int is_port;
1011  vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, sw_if_index);
1012 
1013  is_port = !(sw->type == VNET_SW_INTERFACE_TYPE_SUB);
1014 
1015  // Find the config for this subinterface
1016  subint =
1017  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
1018  &dummy_unsup);
1019 
1020  if (subint == 0)
1021  {
1022  // unimplemented or not ethernet
1023  goto done;
1024  }
1025 
1026  // Double check that the config we found is for our interface (or the interface is down)
1027  ASSERT ((subint->sw_if_index == sw_if_index) | (subint->sw_if_index == ~0));
1028 
1029  if (l2)
1030  {
1031  subint->flags |= SUBINT_CONFIG_L2;
1032  if (is_port)
1033  subint->flags |=
1036  }
1037  else
1038  {
1039  subint->flags &= ~SUBINT_CONFIG_L2;
1040  if (is_port)
1041  subint->flags &=
1044  }
1045 
1046 done:
1047  return;
1048 }
1049 
1050 /*
1051  * Set the L2/L3 mode for the subinterface regardless of port
1052  */
1053 void
1055  u32 sw_if_index, u32 l2)
1056 {
1057  subint_config_t *subint;
1058  u32 dummy_flags;
1059  u32 dummy_unsup;
1060 
1061  /* Find the config for this subinterface */
1062  subint =
1063  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
1064  &dummy_unsup);
1065 
1066  if (subint == 0)
1067  {
1068  /* unimplemented or not ethernet */
1069  goto done;
1070  }
1071 
1072  /*
1073  * Double check that the config we found is for our interface (or the
1074  * interface is down)
1075  */
1076  ASSERT ((subint->sw_if_index == sw_if_index) | (subint->sw_if_index == ~0));
1077 
1078  if (l2)
1079  {
1080  subint->flags |= SUBINT_CONFIG_L2;
1081  }
1082  else
1083  {
1084  subint->flags &= ~SUBINT_CONFIG_L2;
1085  }
1086 
1087 done:
1088  return;
1089 }
1090 
1091 static clib_error_t *
1093  u32 sw_if_index, u32 is_create)
1094 {
1095  clib_error_t *error = 0;
1096  subint_config_t *subint;
1097  u32 match_flags;
1098  u32 unsupported = 0;
1099 
1100  // Find the config for this subinterface
1101  subint =
1102  ethernet_sw_interface_get_config (vnm, sw_if_index, &match_flags,
1103  &unsupported);
1104 
1105  if (subint == 0)
1106  {
1107  // not implemented yet or not ethernet
1108  if (unsupported)
1109  {
1110  // this is the NYI case
1111  error = clib_error_return (0, "not implemented yet");
1112  }
1113  goto done;
1114  }
1115 
1116  if (!is_create)
1117  {
1118  subint->flags = 0;
1119  return error;
1120  }
1121 
1122  // Initialize the subint
1123  if (subint->flags & SUBINT_CONFIG_VALID)
1124  {
1125  // Error vlan already in use
1126  error = clib_error_return (0, "vlan is already in use");
1127  }
1128  else
1129  {
1130  // Note that config is L3 by defaulty
1131  subint->flags = SUBINT_CONFIG_VALID | match_flags;
1132  subint->sw_if_index = ~0; // because interfaces are initially down
1133  }
1134 
1135 done:
1136  return error;
1137 }
1138 
1140 
1141 static char *ethernet_error_strings[] = {
1142 #define ethernet_error(n,c,s) s,
1143 #include "error.def"
1144 #undef ethernet_error
1145 };
1146 
1147 /* *INDENT-OFF* */
1149  .function = ethernet_input,
1150  .name = "ethernet-input",
1151  /* Takes a vector of packets. */
1152  .vector_size = sizeof (u32),
1153  .n_errors = ETHERNET_N_ERROR,
1154  .error_strings = ethernet_error_strings,
1155  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1156  .next_nodes = {
1157 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1159 #undef _
1160  },
1161  .format_buffer = format_ethernet_header_with_length,
1162  .format_trace = format_ethernet_input_trace,
1163  .unformat_buffer = unformat_ethernet_header,
1164 };
1165 /* *INDENT-ON* */
1166 
1167 /* *INDENT-OFF* */
1169 /* *INDENT-ON* */
1170 
1171 /* *INDENT-OFF* */
1173  .function = ethernet_input_type,
1174  .name = "ethernet-input-type",
1175  /* Takes a vector of packets. */
1176  .vector_size = sizeof (u32),
1177  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1178  .next_nodes = {
1179 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1181 #undef _
1182  },
1183 };
1184 /* *INDENT-ON* */
1185 
1186 /* *INDENT-OFF* */
1188 /* *INDENT-ON* */
1189 
1190 /* *INDENT-OFF* */
1192  .function = ethernet_input_not_l2,
1193  .name = "ethernet-input-not-l2",
1194  /* Takes a vector of packets. */
1195  .vector_size = sizeof (u32),
1196  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1197  .next_nodes = {
1198 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1200 #undef _
1201  },
1202 };
1203 /* *INDENT-ON* */
1204 
1205 
1206 /* *INDENT-OFF* */
1209 /* *INDENT-ON* */
1210 
1211 
1212 void
1214  vnet_hw_interface_t * hi, u32 enable)
1215 {
1216  // Insure all packets go to ethernet-input (i.e. untagged ipv4 packets
1217  // don't go directly to ip4-input)
1219  (vnm, hi->hw_if_index, enable ? ethernet_input_node.index : ~0);
1220 }
1221 
1222 
1223 /*
1224  * Initialization and registration for the next_by_ethernet structure
1225  */
1226 
1227 clib_error_t *
1229 {
1231  ( /* elt bytes */ sizeof (l3_next->input_next_by_type[0]),
1232  /* bits in index */ BITS (((ethernet_header_t *) 0)->type));
1233 
1235  ETHERNET_INPUT_NEXT_DROP);
1237  ETHERNET_INPUT_NEXT_PUNT);
1238  l3_next->sparse_index_by_input_next_index[ETHERNET_INPUT_NEXT_DROP] =
1240  l3_next->sparse_index_by_input_next_index[ETHERNET_INPUT_NEXT_PUNT] =
1242 
1243  /*
1244  * Make sure we don't wipe out an ethernet registration by mistake
1245  * Can happen if init function ordering constraints are missing.
1246  */
1247  if (CLIB_DEBUG > 0)
1248  {
1251  }
1252 
1253  return 0;
1254 }
1255 
1256 // Add an ethertype -> next index mapping to the structure
1257 clib_error_t *
1259  u32 ethertype, u32 next_index)
1260 {
1261  u32 i;
1262  u16 *n;
1264 
1265  if (CLIB_DEBUG > 0)
1266  {
1269  }
1270 
1271  /* Setup ethernet type -> next index sparse vector mapping. */
1272  n = sparse_vec_validate (l3_next->input_next_by_type, ethertype);
1273  n[0] = next_index;
1274 
1275  /* Rebuild next index -> sparse index inverse mapping when sparse vector
1276  is updated. */
1277  vec_validate (l3_next->sparse_index_by_input_next_index, next_index);
1278  for (i = 1; i < vec_len (l3_next->input_next_by_type); i++)
1279  l3_next->
1280  sparse_index_by_input_next_index[l3_next->input_next_by_type[i]] = i;
1281 
1282  // do not allow the cached next index's to be updated if L3
1283  // redirect is enabled, as it will have overwritten them
1284  if (!em->redirect_l3)
1285  {
1286  // Cache common ethertypes directly
1287  if (ethertype == ETHERNET_TYPE_IP4)
1288  {
1289  l3_next->input_next_ip4 = next_index;
1290  }
1291  else if (ethertype == ETHERNET_TYPE_IP6)
1292  {
1293  l3_next->input_next_ip6 = next_index;
1294  }
1295  else if (ethertype == ETHERNET_TYPE_MPLS)
1296  {
1297  l3_next->input_next_mpls = next_index;
1298  }
1299  }
1300  return 0;
1301 }
1302 
1303 
1304 static clib_error_t *
1306 {
1308  __attribute__ ((unused)) vlan_table_t *invalid_vlan_table;
1309  __attribute__ ((unused)) qinq_table_t *invalid_qinq_table;
1310 
1314 
1316 
1317  // Initialize pools and vector for vlan parsing
1318  vec_validate (em->main_intfs, 10); // 10 main interfaces
1319  pool_alloc (em->vlan_pool, 10);
1320  pool_alloc (em->qinq_pool, 1);
1321 
1322  // The first vlan pool will always be reserved for an invalid table
1323  pool_get (em->vlan_pool, invalid_vlan_table); // first id = 0
1324  // The first qinq pool will always be reserved for an invalid table
1325  pool_get (em->qinq_pool, invalid_qinq_table); // first id = 0
1326 
1327  return 0;
1328 }
1329 
1331 
1332 void
1334  ethernet_type_t type, u32 node_index)
1335 {
1338  u32 i;
1339 
1340  {
1342  if (error)
1343  clib_error_report (error);
1344  }
1345 
1346  ti = ethernet_get_type_info (em, type);
1347  ti->node_index = node_index;
1348  ti->next_index = vlib_node_add_next (vm,
1349  ethernet_input_node.index, node_index);
1350  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1351  ASSERT (i == ti->next_index);
1352 
1353  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1354  ASSERT (i == ti->next_index);
1355 
1356  // Add the L3 node for this ethertype to the next nodes structure
1357  next_by_ethertype_register (&em->l3_next, type, ti->next_index);
1358 
1359  // Call the registration functions for other nodes that want a mapping
1360  l2bvi_register_input_type (vm, type, node_index);
1361 }
1362 
1363 void
1365 {
1367  u32 i;
1368 
1369  em->l2_next =
1370  vlib_node_add_next (vm, ethernet_input_node.index, node_index);
1371 
1372  /*
1373  * Even if we never use these arcs, we have to align the next indices...
1374  */
1375  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1376 
1377  ASSERT (i == em->l2_next);
1378 
1379  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1380  ASSERT (i == em->l2_next);
1381 }
1382 
1383 // Register a next node for L3 redirect, and enable L3 redirect
1384 void
1386 {
1388  u32 i;
1389 
1390  em->redirect_l3 = 1;
1392  ethernet_input_node.index,
1393  node_index);
1394  /*
1395  * Change the cached next nodes to the redirect node
1396  */
1400 
1401  /*
1402  * Even if we never use these arcs, we have to align the next indices...
1403  */
1404  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1405 
1406  ASSERT (i == em->redirect_l3_next);
1407 
1408  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1409 
1410  ASSERT (i == em->redirect_l3_next);
1411 }
1412 
1413 /*
1414  * fd.io coding-style-patch-verification: ON
1415  *
1416  * Local Variables:
1417  * eval: (c-set-style "gnu")
1418  * End:
1419  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:437
subint_config_t subint
Definition: ethernet.h:239
vmrglw vmrglh hi
VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(bond_sw_interface_up_down)
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:289
#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:213
u8 runtime_data[0]
Function dependent node-runtime data.
Definition: node.h:500
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:326
vnet_interface_main_t interface_main
Definition: vnet.h:56
vnet_p2p_sub_interface_t p2p
Definition: interface.h:700
#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:1222
void ethernet_register_l2_input(vlib_main_t *vm, u32 node_index)
Definition: node.c:1364
#define NULL
Definition: clib.h:55
ethernet_type_t
Definition: packet.h:45
#define SUBINT_CONFIG_MATCH_0_TAG
Definition: ethernet.h:200
#define ethernet_buffer_header_size(b)
Determine the size of the Ethernet headers of the current frame in the buffer.
Definition: ethernet.h:424
static subint_config_t * ethernet_sw_interface_get_config(vnet_main_t *vnm, u32 sw_if_index, u32 *flags, u32 *unsupported)
Definition: node.c:800
ethernet_input_variant_t
Definition: node.c:80
int i
main_intf_t * main_intfs
Definition: ethernet.h:287
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:228
u8 packet_data[32]
Definition: node.c:63
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:451
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:250
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:227
static uword vlib_node_add_next(vlib_main_t *vm, uword node, uword next_node)
Definition: node_funcs.h:1110
unsigned char u8
Definition: types.h:56
static clib_error_t * ethernet_sw_interface_add_del(vnet_main_t *vnm, u32 sw_if_index, u32 is_create)
Definition: node.c:1092
struct vnet_sub_interface_t::@198::@199::@201 flags
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:104
#define static_always_inline
Definition: clib.h:93
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:156
static uword ethernet_address_cast(u8 *a)
Definition: packet.h:67
clib_error_t * next_by_ethertype_init(next_by_ethertype_t *l3_next)
Definition: node.c:1228
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:810
u8 dst_address[6]
Definition: packet.h:55
#define sparse_vec_validate(v, i)
Definition: sparse_vec.h:227
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:184
subint_config_t default_subint
Definition: ethernet.h:220
#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
unsigned int u32
Definition: types.h:88
#define vlib_call_init_function(vm, x)
Definition: init.h:227
static char * ethernet_error_strings[]
Definition: node.c:1141
ethernet_input_next_t
Definition: node.c:53
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:1305
u16 dot1q_vlans
Definition: ethernet.h:221
subint_config_t single_tag_subint
Definition: ethernet.h:227
vnet_sub_interface_t sub
Definition: interface.h:697
u32 * sparse_index_by_input_next_index
Definition: ethernet.h:255
static ethernet_type_info_t * ethernet_get_type_info(ethernet_main_t *em, ethernet_type_t type)
Definition: ethernet.h:311
clib_error_t * ethernet_sw_interface_up_down(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: node.c:975
static uword ethernet_input_not_l2(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:787
unsigned short u16
Definition: types.h:57
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:202
static vlib_node_registration_t ethernet_input_type_node
(constructor) VLIB_REGISTER_NODE (ethernet_input_type_node)
Definition: node.c:1172
#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:397
u16 dot1ad_vlans
Definition: ethernet.h:222
#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:203
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:135
vnet_hw_interface_class_t ethernet_hw_interface_class
u8 next_by_ethertype_register_called
Definition: ethernet.h:299
subint_config_t untagged_subint
Definition: ethernet.h:219
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:204
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:153
qinq_intf_t vlans[ETHERNET_N_VLAN]
Definition: ethernet.h:244
u16 n_vectors
Definition: node.h:380
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:77
vlib_main_t * vm
Definition: buffer.c:294
static uword ethernet_input_type(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:779
struct vnet_sub_interface_t::@198 eth
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:201
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:451
static uword sparse_vec_index(void *v, uword sparse_index)
Definition: sparse_vec.h:157
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:492
#define SUBINT_CONFIG_L2
Definition: ethernet.h:205
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:660
vlan_table_t * vlan_pool
Definition: ethernet.h:290
#define ASSERT(truth)
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:490
u8 * format_ethernet_header(u8 *s, va_list *args)
Definition: format.c:172
u32 redirect_l3_next
Definition: ethernet.h:275
void ethernet_register_l3_redirect(vlib_main_t *vm, u32 node_index)
Definition: node.c:1385
void ethernet_sw_interface_set_l2_mode_noport(vnet_main_t *vnm, u32 sw_if_index, u32 l2)
Definition: node.c:1054
static_always_inline int ethernet_frame_is_tagged(u16 type)
Definition: ethernet.h:85
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:1333
#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:215
vlan_intf_t vlans[ETHERNET_N_VLAN]
Definition: ethernet.h:234
#define SUBINT_CONFIG_MATCH_2_TAG
Definition: ethernet.h:202
clib_error_t * next_by_ethertype_register(next_by_ethertype_t *l3_next, u32 ethertype, u32 next_index)
Definition: node.c:1258
#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:1191
struct _vlib_node_registration vlib_node_registration_t
#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
#define SUBINT_CONFIG_P2P
Definition: ethernet.h:206
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)
static_always_inline int ethernet_frame_is_any_tagged_x2(u16 type0, u16 type1)
Definition: ethernet.h:99
u64 uword
Definition: types.h:112
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:1005
static uword ethernet_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:771
#define vnet_buffer(b)
Definition: buffer.h:360
p2p_ethernet_main_t p2p_main
Definition: p2p_ethernet.c:23
vnet_sw_interface_type_t type
Definition: interface.h:655
static u32 eth_mac_equal(u8 *mac1, u8 *mac2)
Definition: ethernet.h:542
qinq_table_t * qinq_pool
Definition: ethernet.h:293
u8 data[0]
Packet data.
Definition: buffer.h:172
u16 flags
Copy of main node flags.
Definition: node.h:486
next_by_ethertype_t l3_next
Definition: ethernet.h:268
subint_config_t * p2p_subif_pool
Definition: p2p_ethernet.h:31
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:295
u32 flags
Definition: vhost-user.h:77
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:62
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:111
#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:1207
static void ethernet_setup_node(vlib_main_t *vm, u32 node_index)
Definition: ethernet.h:369
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:254
#define SPARSE_VEC_INVALID_INDEX
Definition: sparse_vec.h:68