FD.io VPP  v17.01-9-ge7dcee4
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 
298  if (variant != ETHERNET_INPUT_VARIANT_ETHERNET)
299  error_node = vlib_node_get_runtime (vm, ethernet_input_node.index);
300  else
301  error_node = node;
302 
303  from = vlib_frame_vector_args (from_frame);
304  n_left_from = from_frame->n_vectors;
305 
306  if (node->flags & VLIB_NODE_FLAG_TRACE)
308  from,
309  n_left_from,
310  sizeof (from[0]),
311  sizeof (ethernet_input_trace_t));
312 
313  next_index = node->cached_next_index;
314  stats_sw_if_index = node->runtime_data[0];
315  stats_n_packets = stats_n_bytes = 0;
316 
317  while (n_left_from > 0)
318  {
319  u32 n_left_to_next;
320 
321  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
322 
323  while (n_left_from >= 4 && n_left_to_next >= 2)
324  {
325  u32 bi0, bi1;
326  vlib_buffer_t *b0, *b1;
327  u8 next0, next1, error0, error1;
328  u16 type0, orig_type0, type1, orig_type1;
329  u16 outer_id0, inner_id0, outer_id1, inner_id1;
330  u32 match_flags0, match_flags1;
331  u32 old_sw_if_index0, new_sw_if_index0, len0, old_sw_if_index1,
332  new_sw_if_index1, len1;
333  vnet_hw_interface_t *hi0, *hi1;
334  main_intf_t *main_intf0, *main_intf1;
335  vlan_intf_t *vlan_intf0, *vlan_intf1;
336  qinq_intf_t *qinq_intf0, *qinq_intf1;
337  u32 is_l20, is_l21;
338  ethernet_header_t *e0, *e1;
339 
340  /* Prefetch next iteration. */
341  {
342  vlib_buffer_t *b2, *b3;
343 
344  b2 = vlib_get_buffer (vm, from[2]);
345  b3 = vlib_get_buffer (vm, from[3]);
346 
347  vlib_prefetch_buffer_header (b2, STORE);
348  vlib_prefetch_buffer_header (b3, STORE);
349 
350  CLIB_PREFETCH (b2->data, sizeof (ethernet_header_t), LOAD);
351  CLIB_PREFETCH (b3->data, sizeof (ethernet_header_t), LOAD);
352  }
353 
354  bi0 = from[0];
355  bi1 = from[1];
356  to_next[0] = bi0;
357  to_next[1] = bi1;
358  from += 2;
359  to_next += 2;
360  n_left_to_next -= 2;
361  n_left_from -= 2;
362 
363  b0 = vlib_get_buffer (vm, bi0);
364  b1 = vlib_get_buffer (vm, bi1);
365 
366  error0 = error1 = ETHERNET_ERROR_NONE;
367  e0 = vlib_buffer_get_current (b0);
368  type0 = clib_net_to_host_u16 (e0->type);
369  e1 = vlib_buffer_get_current (b1);
370  type1 = clib_net_to_host_u16 (e1->type);
371 
372  /* Speed-path for the untagged case */
374  && !ethernet_frame_is_tagged (type0)
375  && !ethernet_frame_is_tagged (type1)))
376  {
377  main_intf_t *intf0;
378  subint_config_t *subint0;
379  u32 sw_if_index0, sw_if_index1;
380 
381  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
382  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
383  is_l20 = cached_is_l2;
384 
385  /* This is probably wholly unnecessary */
386  if (PREDICT_FALSE (sw_if_index0 != sw_if_index1))
387  goto slowpath;
388 
389  if (PREDICT_FALSE (cached_sw_if_index != sw_if_index0))
390  {
391  cached_sw_if_index = sw_if_index0;
392  hi0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
393  intf0 = vec_elt_at_index (em->main_intfs, hi0->hw_if_index);
394  subint0 = &intf0->untagged_subint;
395  cached_is_l2 = is_l20 = subint0->flags & SUBINT_CONFIG_L2;
396  }
397 
398  vnet_buffer (b0)->ethernet.start_of_ethernet_header =
399  b0->current_data;
400  vnet_buffer (b1)->ethernet.start_of_ethernet_header =
401  b1->current_data;
402 
403  if (PREDICT_TRUE (is_l20 != 0))
404  {
405  next0 = em->l2_next;
406  vnet_buffer (b0)->l2.l2_len = sizeof (ethernet_header_t);
407  next1 = em->l2_next;
408  vnet_buffer (b1)->l2.l2_len = sizeof (ethernet_header_t);
409  }
410  else
411  {
412  determine_next_node (em, variant, 0, type0, b0,
413  &error0, &next0);
414  vlib_buffer_advance (b0, sizeof (ethernet_header_t));
415  determine_next_node (em, variant, 0, type1, b1,
416  &error1, &next1);
417  vlib_buffer_advance (b1, sizeof (ethernet_header_t));
418  }
419  goto ship_it01;
420  }
421 
422  /* Slow-path for the tagged case */
423  slowpath:
424  parse_header (variant,
425  b0,
426  &type0,
427  &orig_type0, &outer_id0, &inner_id0, &match_flags0);
428 
429  parse_header (variant,
430  b1,
431  &type1,
432  &orig_type1, &outer_id1, &inner_id1, &match_flags1);
433 
434  old_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
435  old_sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
436 
438  vnm,
439  old_sw_if_index0,
440  orig_type0,
441  outer_id0,
442  inner_id0,
443  &hi0,
444  &main_intf0, &vlan_intf0, &qinq_intf0);
445 
447  vnm,
448  old_sw_if_index1,
449  orig_type1,
450  outer_id1,
451  inner_id1,
452  &hi1,
453  &main_intf1, &vlan_intf1, &qinq_intf1);
454 
455  identify_subint (hi0,
456  b0,
457  match_flags0,
458  main_intf0,
459  vlan_intf0,
460  qinq_intf0, &new_sw_if_index0, &error0, &is_l20);
461 
462  identify_subint (hi1,
463  b1,
464  match_flags1,
465  main_intf1,
466  vlan_intf1,
467  qinq_intf1, &new_sw_if_index1, &error1, &is_l21);
468 
469  // Save RX sw_if_index for later nodes
470  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
471  error0 !=
472  ETHERNET_ERROR_NONE ? old_sw_if_index0 : new_sw_if_index0;
473  vnet_buffer (b1)->sw_if_index[VLIB_RX] =
474  error1 !=
475  ETHERNET_ERROR_NONE ? old_sw_if_index1 : new_sw_if_index1;
476 
477  // Check if there is a stat to take (valid and non-main sw_if_index for pkt 0 or pkt 1)
478  if (((new_sw_if_index0 != ~0)
479  && (new_sw_if_index0 != old_sw_if_index0))
480  || ((new_sw_if_index1 != ~0)
481  && (new_sw_if_index1 != old_sw_if_index1)))
482  {
483 
484  len0 = vlib_buffer_length_in_chain (vm, b0) + b0->current_data
485  - vnet_buffer (b0)->ethernet.start_of_ethernet_header;
486  len1 = vlib_buffer_length_in_chain (vm, b1) + b1->current_data
487  - vnet_buffer (b1)->ethernet.start_of_ethernet_header;
488 
489  stats_n_packets += 2;
490  stats_n_bytes += len0 + len1;
491 
492  if (PREDICT_FALSE
493  (!(new_sw_if_index0 == stats_sw_if_index
494  && new_sw_if_index1 == stats_sw_if_index)))
495  {
496  stats_n_packets -= 2;
497  stats_n_bytes -= len0 + len1;
498 
499  if (new_sw_if_index0 != old_sw_if_index0
500  && new_sw_if_index0 != ~0)
502  interface_main.combined_sw_if_counters
503  +
505  cpu_index,
506  new_sw_if_index0, 1,
507  len0);
508  if (new_sw_if_index1 != old_sw_if_index1
509  && new_sw_if_index1 != ~0)
511  interface_main.combined_sw_if_counters
512  +
514  cpu_index,
515  new_sw_if_index1, 1,
516  len1);
517 
518  if (new_sw_if_index0 == new_sw_if_index1)
519  {
520  if (stats_n_packets > 0)
521  {
525  cpu_index,
526  stats_sw_if_index,
527  stats_n_packets, stats_n_bytes);
528  stats_n_packets = stats_n_bytes = 0;
529  }
530  stats_sw_if_index = new_sw_if_index0;
531  }
532  }
533  }
534 
535  if (variant == ETHERNET_INPUT_VARIANT_NOT_L2)
536  is_l20 = is_l21 = 0;
537 
538  determine_next_node (em, variant, is_l20, type0, b0, &error0,
539  &next0);
540  determine_next_node (em, variant, is_l21, type1, b1, &error1,
541  &next1);
542 
543  b0->error = error_node->errors[error0];
544  b1->error = error_node->errors[error1];
545 
546  ship_it01:
547  // verify speculative enqueue
548  vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
549  n_left_to_next, bi0, bi1, next0,
550  next1);
551  }
552 
553  while (n_left_from > 0 && n_left_to_next > 0)
554  {
555  u32 bi0;
556  vlib_buffer_t *b0;
557  u8 error0, next0;
558  u16 type0, orig_type0;
559  u16 outer_id0, inner_id0;
560  u32 match_flags0;
561  u32 old_sw_if_index0, new_sw_if_index0, len0;
562  vnet_hw_interface_t *hi0;
563  main_intf_t *main_intf0;
564  vlan_intf_t *vlan_intf0;
565  qinq_intf_t *qinq_intf0;
566  ethernet_header_t *e0;
567  u32 is_l20;
568 
569  // Prefetch next iteration
570  if (n_left_from > 1)
571  {
572  vlib_buffer_t *p2;
573 
574  p2 = vlib_get_buffer (vm, from[1]);
575  vlib_prefetch_buffer_header (p2, STORE);
577  }
578 
579  bi0 = from[0];
580  to_next[0] = bi0;
581  from += 1;
582  to_next += 1;
583  n_left_from -= 1;
584  n_left_to_next -= 1;
585 
586  b0 = vlib_get_buffer (vm, bi0);
587 
588  error0 = ETHERNET_ERROR_NONE;
589  e0 = vlib_buffer_get_current (b0);
590  type0 = clib_net_to_host_u16 (e0->type);
591 
592  /* Speed-path for the untagged case */
594  && !ethernet_frame_is_tagged (type0)))
595  {
596  main_intf_t *intf0;
597  subint_config_t *subint0;
598  u32 sw_if_index0;
599 
600  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
601  is_l20 = cached_is_l2;
602 
603  if (PREDICT_FALSE (cached_sw_if_index != sw_if_index0))
604  {
605  cached_sw_if_index = sw_if_index0;
606  hi0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
607  intf0 = vec_elt_at_index (em->main_intfs, hi0->hw_if_index);
608  subint0 = &intf0->untagged_subint;
609  cached_is_l2 = is_l20 = subint0->flags & SUBINT_CONFIG_L2;
610  }
611 
612  vnet_buffer (b0)->ethernet.start_of_ethernet_header =
613  b0->current_data;
614 
615  if (PREDICT_TRUE (is_l20 != 0))
616  {
617  next0 = em->l2_next;
618  vnet_buffer (b0)->l2.l2_len = sizeof (ethernet_header_t);
619  }
620  else
621  {
622  determine_next_node (em, variant, 0, type0, b0,
623  &error0, &next0);
624  vlib_buffer_advance (b0, sizeof (ethernet_header_t));
625  }
626  goto ship_it0;
627  }
628 
629  /* Slow-path for the tagged case */
630  parse_header (variant,
631  b0,
632  &type0,
633  &orig_type0, &outer_id0, &inner_id0, &match_flags0);
634 
635  old_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
636 
638  vnm,
639  old_sw_if_index0,
640  orig_type0,
641  outer_id0,
642  inner_id0,
643  &hi0,
644  &main_intf0, &vlan_intf0, &qinq_intf0);
645 
646  identify_subint (hi0,
647  b0,
648  match_flags0,
649  main_intf0,
650  vlan_intf0,
651  qinq_intf0, &new_sw_if_index0, &error0, &is_l20);
652 
653  // Save RX sw_if_index for later nodes
654  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
655  error0 !=
656  ETHERNET_ERROR_NONE ? old_sw_if_index0 : new_sw_if_index0;
657 
658  // Increment subinterface stats
659  // Note that interface-level counters have already been incremented
660  // prior to calling this function. Thus only subinterface counters
661  // are incremented here.
662  //
663  // Interface level counters include packets received on the main
664  // interface and all subinterfaces. Subinterface level counters
665  // include only those packets received on that subinterface
666  // Increment stats if the subint is valid and it is not the main intf
667  if ((new_sw_if_index0 != ~0)
668  && (new_sw_if_index0 != old_sw_if_index0))
669  {
670 
671  len0 = vlib_buffer_length_in_chain (vm, b0) + b0->current_data
672  - vnet_buffer (b0)->ethernet.start_of_ethernet_header;
673 
674  stats_n_packets += 1;
675  stats_n_bytes += len0;
676 
677  // Batch stat increments from the same subinterface so counters
678  // don't need to be incremented for every packet.
679  if (PREDICT_FALSE (new_sw_if_index0 != stats_sw_if_index))
680  {
681  stats_n_packets -= 1;
682  stats_n_bytes -= len0;
683 
684  if (new_sw_if_index0 != ~0)
688  cpu_index, new_sw_if_index0, 1, len0);
689  if (stats_n_packets > 0)
690  {
694  cpu_index,
695  stats_sw_if_index, stats_n_packets, stats_n_bytes);
696  stats_n_packets = stats_n_bytes = 0;
697  }
698  stats_sw_if_index = new_sw_if_index0;
699  }
700  }
701 
702  if (variant == ETHERNET_INPUT_VARIANT_NOT_L2)
703  is_l20 = 0;
704 
705  determine_next_node (em, variant, is_l20, type0, b0, &error0,
706  &next0);
707 
708  b0->error = error_node->errors[error0];
709 
710  // verify speculative enqueue
711  ship_it0:
712  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
713  to_next, n_left_to_next,
714  bi0, next0);
715  }
716 
717  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
718  }
719 
720  // Increment any remaining batched stats
721  if (stats_n_packets > 0)
722  {
726  cpu_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
727  node->runtime_data[0] = stats_sw_if_index;
728  }
729 
730  return from_frame->n_vectors;
731 }
732 
733 static uword
735  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
736 {
737  return ethernet_input_inline (vm, node, from_frame,
739 }
740 
741 static uword
743  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
744 {
745  return ethernet_input_inline (vm, node, from_frame,
747 }
748 
749 static uword
751  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
752 {
753  return ethernet_input_inline (vm, node, from_frame,
755 }
756 
757 
758 // Return the subinterface config struct for the given sw_if_index
759 // Also return via parameter the appropriate match flags for the
760 // configured number of tags.
761 // On error (unsupported or not ethernet) return 0.
762 static subint_config_t *
764  u32 sw_if_index,
765  u32 * flags, u32 * unsupported)
766 {
770  main_intf_t *main_intf;
771  vlan_table_t *vlan_table;
772  qinq_table_t *qinq_table;
773  subint_config_t *subint = 0;
774 
775  hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
776 
777  if (!hi || (hi->hw_class_index != ethernet_hw_interface_class.index))
778  {
779  *unsupported = 0;
780  goto done; // non-ethernet interface
781  }
782 
783  // ensure there's an entry for the main intf (shouldn't really be necessary)
785  main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
786 
787  // Locate the subint for the given ethernet config
788  si = vnet_get_sw_interface (vnm, sw_if_index);
789 
790  if (si->sub.eth.flags.default_sub)
791  {
792  subint = &main_intf->default_subint;
793  *flags = SUBINT_CONFIG_MATCH_0_TAG |
796  }
797  else if ((si->sub.eth.flags.no_tags) || (si->sub.eth.raw_flags == 0))
798  {
799  // if no flags are set then this is a main interface
800  // so treat as untagged
801  subint = &main_intf->untagged_subint;
802  *flags = SUBINT_CONFIG_MATCH_0_TAG;
803  }
804  else
805  {
806  // one or two tags
807  // first get the vlan table
808  if (si->sub.eth.flags.dot1ad)
809  {
810  if (main_intf->dot1ad_vlans == 0)
811  {
812  // Allocate a vlan table from the pool
813  pool_get (em->vlan_pool, vlan_table);
814  main_intf->dot1ad_vlans = vlan_table - em->vlan_pool;
815  }
816  else
817  {
818  // Get ptr to existing vlan table
819  vlan_table =
820  vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
821  }
822  }
823  else
824  { // dot1q
825  if (main_intf->dot1q_vlans == 0)
826  {
827  // Allocate a vlan table from the pool
828  pool_get (em->vlan_pool, vlan_table);
829  main_intf->dot1q_vlans = vlan_table - em->vlan_pool;
830  }
831  else
832  {
833  // Get ptr to existing vlan table
834  vlan_table =
835  vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
836  }
837  }
838 
839  if (si->sub.eth.flags.one_tag)
840  {
841  *flags = si->sub.eth.flags.exact_match ?
845 
846  if (si->sub.eth.flags.outer_vlan_id_any)
847  {
848  // not implemented yet
849  *unsupported = 1;
850  goto done;
851  }
852  else
853  {
854  // a single vlan, a common case
855  subint =
856  &vlan_table->vlans[si->sub.eth.
857  outer_vlan_id].single_tag_subint;
858  }
859 
860  }
861  else
862  {
863  // Two tags
864  *flags = si->sub.eth.flags.exact_match ?
867 
868  if (si->sub.eth.flags.outer_vlan_id_any
869  && si->sub.eth.flags.inner_vlan_id_any)
870  {
871  // not implemented yet
872  *unsupported = 1;
873  goto done;
874  }
875 
876  if (si->sub.eth.flags.inner_vlan_id_any)
877  {
878  // a specific outer and "any" inner
879  // don't need a qinq table for this
880  subint =
881  &vlan_table->vlans[si->sub.eth.
882  outer_vlan_id].inner_any_subint;
883  if (si->sub.eth.flags.exact_match)
884  {
885  *flags = SUBINT_CONFIG_MATCH_2_TAG;
886  }
887  else
888  {
889  *flags = SUBINT_CONFIG_MATCH_2_TAG |
891  }
892  }
893  else
894  {
895  // a specific outer + specifc innner vlan id, a common case
896 
897  // get the qinq table
898  if (vlan_table->vlans[si->sub.eth.outer_vlan_id].qinqs == 0)
899  {
900  // Allocate a qinq table from the pool
901  pool_get (em->qinq_pool, qinq_table);
902  vlan_table->vlans[si->sub.eth.outer_vlan_id].qinqs =
903  qinq_table - em->qinq_pool;
904  }
905  else
906  {
907  // Get ptr to existing qinq table
908  qinq_table =
910  vlan_table->vlans[si->sub.
911  eth.outer_vlan_id].
912  qinqs);
913  }
914  subint = &qinq_table->vlans[si->sub.eth.inner_vlan_id].subint;
915  }
916  }
917  }
918 
919 done:
920  return subint;
921 }
922 
923 clib_error_t *
925 {
926  subint_config_t *subint;
927  u32 dummy_flags;
928  u32 dummy_unsup;
929  clib_error_t *error = 0;
930 
931  // Find the config for this subinterface
932  subint =
933  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
934  &dummy_unsup);
935 
936  if (subint == 0)
937  {
938  // not implemented yet or not ethernet
939  goto done;
940  }
941 
942  subint->sw_if_index =
943  ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? sw_if_index : ~0);
944 
945 done:
946  return error;
947 }
948 
950 
951 
952 // Set the L2/L3 mode for the subinterface
953 void
955 {
956  subint_config_t *subint;
957  u32 dummy_flags;
958  u32 dummy_unsup;
959  int is_port;
960  vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, sw_if_index);
961 
962  is_port = !(sw->type == VNET_SW_INTERFACE_TYPE_SUB);
963 
964  // Find the config for this subinterface
965  subint =
966  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
967  &dummy_unsup);
968 
969  if (subint == 0)
970  {
971  // unimplemented or not ethernet
972  goto done;
973  }
974 
975  // Double check that the config we found is for our interface (or the interface is down)
976  ASSERT ((subint->sw_if_index == sw_if_index) | (subint->sw_if_index == ~0));
977 
978  if (l2)
979  {
980  subint->flags |= SUBINT_CONFIG_L2;
981  if (is_port)
982  subint->flags |=
985  }
986  else
987  {
988  subint->flags &= ~SUBINT_CONFIG_L2;
989  if (is_port)
990  subint->flags &=
993  }
994 
995 done:
996  return;
997 }
998 
999 /*
1000  * Set the L2/L3 mode for the subinterface regardless of port
1001  */
1002 void
1004  u32 sw_if_index, u32 l2)
1005 {
1006  subint_config_t *subint;
1007  u32 dummy_flags;
1008  u32 dummy_unsup;
1009 
1010  /* Find the config for this subinterface */
1011  subint =
1012  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
1013  &dummy_unsup);
1014 
1015  if (subint == 0)
1016  {
1017  /* unimplemented or not ethernet */
1018  goto done;
1019  }
1020 
1021  /*
1022  * Double check that the config we found is for our interface (or the
1023  * interface is down)
1024  */
1025  ASSERT ((subint->sw_if_index == sw_if_index) | (subint->sw_if_index == ~0));
1026 
1027  if (l2)
1028  {
1029  subint->flags |= SUBINT_CONFIG_L2;
1030  }
1031  else
1032  {
1033  subint->flags &= ~SUBINT_CONFIG_L2;
1034  }
1035 
1036 done:
1037  return;
1038 }
1039 
1040 static clib_error_t *
1042  u32 sw_if_index, u32 is_create)
1043 {
1044  clib_error_t *error = 0;
1045  subint_config_t *subint;
1046  u32 match_flags;
1047  u32 unsupported = 0;
1048 
1049  // Find the config for this subinterface
1050  subint =
1051  ethernet_sw_interface_get_config (vnm, sw_if_index, &match_flags,
1052  &unsupported);
1053 
1054  if (subint == 0)
1055  {
1056  // not implemented yet or not ethernet
1057  if (unsupported)
1058  {
1059  // this is the NYI case
1060  error = clib_error_return (0, "not implemented yet");
1061  }
1062  goto done;
1063  }
1064 
1065  if (!is_create)
1066  {
1067  subint->flags = 0;
1068  return error;
1069  }
1070 
1071  // Initialize the subint
1072  if (subint->flags & SUBINT_CONFIG_VALID)
1073  {
1074  // Error vlan already in use
1075  error = clib_error_return (0, "vlan is already in use");
1076  }
1077  else
1078  {
1079  // Note that config is L3 by defaulty
1080  subint->flags = SUBINT_CONFIG_VALID | match_flags;
1081  subint->sw_if_index = ~0; // because interfaces are initially down
1082  }
1083 
1084 done:
1085  return error;
1086 }
1087 
1089 
1090 static char *ethernet_error_strings[] = {
1091 #define ethernet_error(n,c,s) s,
1092 #include "error.def"
1093 #undef ethernet_error
1094 };
1095 
1096 /* *INDENT-OFF* */
1098  .function = ethernet_input,
1099  .name = "ethernet-input",
1100  /* Takes a vector of packets. */
1101  .vector_size = sizeof (u32),
1102  .n_errors = ETHERNET_N_ERROR,
1103  .error_strings = ethernet_error_strings,
1104  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1105  .next_nodes = {
1106 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1108 #undef _
1109  },
1110  .format_buffer = format_ethernet_header_with_length,
1111  .format_trace = format_ethernet_input_trace,
1112  .unformat_buffer = unformat_ethernet_header,
1113 };
1114 /* *INDENT-ON* */
1115 
1116 /* *INDENT-OFF* */
1118 /* *INDENT-ON* */
1119 
1120 /* *INDENT-OFF* */
1122  .function = ethernet_input_type,
1123  .name = "ethernet-input-type",
1124  /* Takes a vector of packets. */
1125  .vector_size = sizeof (u32),
1126  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1127  .next_nodes = {
1128 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1130 #undef _
1131  },
1132 };
1133 /* *INDENT-ON* */
1134 
1135 /* *INDENT-OFF* */
1137 /* *INDENT-ON* */
1138 
1139 /* *INDENT-OFF* */
1141  .function = ethernet_input_not_l2,
1142  .name = "ethernet-input-not-l2",
1143  /* Takes a vector of packets. */
1144  .vector_size = sizeof (u32),
1145  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1146  .next_nodes = {
1147 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1149 #undef _
1150  },
1151 };
1152 /* *INDENT-ON* */
1153 
1154 
1155 /* *INDENT-OFF* */
1158 /* *INDENT-ON* */
1159 
1160 
1161 void
1163  vnet_hw_interface_t * hi, u32 enable)
1164 {
1165  // Insure all packets go to ethernet-input (i.e. untagged ipv4 packets
1166  // don't go directly to ip4-input)
1168  (vnm, hi->hw_if_index, enable ? ethernet_input_node.index : ~0);
1169 }
1170 
1171 
1172 /*
1173  * Initialization and registration for the next_by_ethernet structure
1174  */
1175 
1176 clib_error_t *
1178 {
1180  ( /* elt bytes */ sizeof (l3_next->input_next_by_type[0]),
1181  /* bits in index */ BITS (((ethernet_header_t *) 0)->type));
1182 
1184  ETHERNET_INPUT_NEXT_DROP);
1186  ETHERNET_INPUT_NEXT_PUNT);
1187  l3_next->sparse_index_by_input_next_index[ETHERNET_INPUT_NEXT_DROP] =
1189  l3_next->sparse_index_by_input_next_index[ETHERNET_INPUT_NEXT_PUNT] =
1191 
1192  /*
1193  * Make sure we don't wipe out an ethernet registration by mistake
1194  * Can happen if init function ordering constraints are missing.
1195  */
1196  if (CLIB_DEBUG > 0)
1197  {
1200  }
1201 
1202  return 0;
1203 }
1204 
1205 // Add an ethertype -> next index mapping to the structure
1206 clib_error_t *
1208  u32 ethertype, u32 next_index)
1209 {
1210  u32 i;
1211  u16 *n;
1213 
1214  if (CLIB_DEBUG > 0)
1215  {
1218  }
1219 
1220  /* Setup ethernet type -> next index sparse vector mapping. */
1221  n = sparse_vec_validate (l3_next->input_next_by_type, ethertype);
1222  n[0] = next_index;
1223 
1224  /* Rebuild next index -> sparse index inverse mapping when sparse vector
1225  is updated. */
1226  vec_validate (l3_next->sparse_index_by_input_next_index, next_index);
1227  for (i = 1; i < vec_len (l3_next->input_next_by_type); i++)
1228  l3_next->
1229  sparse_index_by_input_next_index[l3_next->input_next_by_type[i]] = i;
1230 
1231  // do not allow the cached next index's to be updated if L3
1232  // redirect is enabled, as it will have overwritten them
1233  if (!em->redirect_l3)
1234  {
1235  // Cache common ethertypes directly
1236  if (ethertype == ETHERNET_TYPE_IP4)
1237  {
1238  l3_next->input_next_ip4 = next_index;
1239  }
1240  else if (ethertype == ETHERNET_TYPE_IP6)
1241  {
1242  l3_next->input_next_ip6 = next_index;
1243  }
1244  else if (ethertype == ETHERNET_TYPE_MPLS_UNICAST)
1245  {
1246  l3_next->input_next_mpls = next_index;
1247  }
1248  }
1249  return 0;
1250 }
1251 
1252 
1253 static clib_error_t *
1255 {
1257  __attribute__ ((unused)) vlan_table_t *invalid_vlan_table;
1258  __attribute__ ((unused)) qinq_table_t *invalid_qinq_table;
1259 
1263 
1265 
1266  // Initialize pools and vector for vlan parsing
1267  vec_validate (em->main_intfs, 10); // 10 main interfaces
1268  pool_alloc (em->vlan_pool, 10);
1269  pool_alloc (em->qinq_pool, 1);
1270 
1271  // The first vlan pool will always be reserved for an invalid table
1272  pool_get (em->vlan_pool, invalid_vlan_table); // first id = 0
1273  // The first qinq pool will always be reserved for an invalid table
1274  pool_get (em->qinq_pool, invalid_qinq_table); // first id = 0
1275 
1276  return 0;
1277 }
1278 
1280 
1281 void
1283  ethernet_type_t type, u32 node_index)
1284 {
1287  u32 i;
1288 
1289  {
1291  if (error)
1292  clib_error_report (error);
1293  }
1294 
1295  ti = ethernet_get_type_info (em, type);
1296  ti->node_index = node_index;
1297  ti->next_index = vlib_node_add_next (vm,
1298  ethernet_input_node.index, node_index);
1299  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1300  ASSERT (i == ti->next_index);
1301 
1302  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1303  ASSERT (i == ti->next_index);
1304 
1305  // Add the L3 node for this ethertype to the next nodes structure
1306  next_by_ethertype_register (&em->l3_next, type, ti->next_index);
1307 
1308  // Call the registration functions for other nodes that want a mapping
1309  l2bvi_register_input_type (vm, type, node_index);
1310 }
1311 
1312 void
1314 {
1316  u32 i;
1317 
1318  em->l2_next =
1319  vlib_node_add_next (vm, ethernet_input_node.index, node_index);
1320 
1321  /*
1322  * Even if we never use these arcs, we have to align the next indices...
1323  */
1324  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1325 
1326  ASSERT (i == em->l2_next);
1327 
1328  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1329  ASSERT (i == em->l2_next);
1330 }
1331 
1332 // Register a next node for L3 redirect, and enable L3 redirect
1333 void
1335 {
1337  u32 i;
1338 
1339  em->redirect_l3 = 1;
1341  ethernet_input_node.index,
1342  node_index);
1343  /*
1344  * Change the cached next nodes to the redirect node
1345  */
1349 
1350  /*
1351  * Even if we never use these arcs, we have to align the next indices...
1352  */
1353  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1354 
1355  ASSERT (i == em->redirect_l3_next);
1356 
1357  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1358 
1359  ASSERT (i == em->redirect_l3_next);
1360 }
1361 
1362 /*
1363  * fd.io coding-style-patch-verification: ON
1364  *
1365  * Local Variables:
1366  * eval: (c-set-style "gnu")
1367  * End:
1368  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:396
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
subint_config_t subint
Definition: ethernet.h:204
vmrglw vmrglh hi
static clib_error_t * ethernet_input_init(vlib_main_t *vm)
Definition: node.c:1254
sll srl srl sll sra u16x4 i
Definition: vector_sse2.h:343
#define CLIB_UNUSED(x)
Definition: clib.h:79
VNET_SW_INTERFACE_ADD_DEL_FUNCTION(ethernet_sw_interface_add_del)
u8 runtime_data[0]
Definition: node.h:469
bad routing header type(not 4)") sr_error (NO_MORE_SEGMENTS
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:247
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:1100
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:387
struct _vlib_node_registration vlib_node_registration_t
main_intf_t * main_intfs
Definition: ethernet.h:252
void ethernet_sw_interface_set_l2_mode_noport(vnet_main_t *vnm, u32 sw_if_index, u32 l2)
Definition: node.c:1003
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
static vlib_node_registration_t ethernet_input_not_l2_node
(constructor) VLIB_REGISTER_NODE (ethernet_input_not_l2_node)
Definition: node.c:1140
subint_config_t inner_any_subint
Definition: ethernet.h:193
u8 packet_data[32]
Definition: node.c:62
#define clib_error_report(e)
Definition: error.h:125
vlib_error_t * errors
Definition: node.h:419
static uword vlib_buffer_length_in_chain(vlib_main_t *vm, vlib_buffer_t *b)
Get length in bytes of the buffer chain.
Definition: buffer_funcs.h:100
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:200
clib_error_t * next_by_ethertype_init(next_by_ethertype_t *l3_next)
Definition: node.c:1177
static uword vlib_node_add_next(vlib_main_t *vm, uword node, uword next_node)
Definition: node_funcs.h:1063
static subint_config_t * ethernet_sw_interface_get_config(vnet_main_t *vnm, u32 sw_if_index, u32 *flags, u32 *unsupported)
Definition: node.c:763
ethernet_main_t ethernet_main
Definition: ethernet.h:270
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
static uword ethernet_input_not_l2(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:750
i16 current_data
signed offset in data[], pre_data[] that we are currently processing.
Definition: buffer.h:78
#define static_always_inline
Definition: clib.h:85
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
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
static uword ethernet_address_cast(u8 *a)
Definition: packet.h:65
struct vnet_sub_interface_t::@154::@155::@157 flags
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:194
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:615
u8 dst_address[6]
Definition: packet.h:53
#define sparse_vec_validate(v, i)
Definition: sparse_vec.h:214
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 vlib_call_init_function(vm, x)
Definition: init.h:161
static u8 * format_ethernet_input_trace(u8 *s, va_list *va)
Definition: node.c:66
void ethernet_set_rx_redirect(vnet_main_t *vnm, vnet_hw_interface_t *hi, u32 enable)
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:558
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:273
ethernet_input_next_t
Definition: node.c:52
uword os_get_cpu_number(void)
Definition: unix-misc.c:224
void ethernet_sw_interface_set_l2_mode(vnet_main_t *vnm, u32 sw_if_index, u32 l2)
Definition: node.c:954
#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:360
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
void ethernet_register_l3_redirect(vlib_main_t *vm, u32 node_index)
Definition: node.c:1334
#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:121
static clib_error_t * ethernet_init(vlib_main_t *vm)
Definition: init.c:82
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
#define foreach_ethernet_input_next
Definition: node.c:47
void ethernet_register_input_type(vlib_main_t *vm, ethernet_type_t type, u32 node_index)
Definition: node.c:1282
static uword ethernet_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:734
u8 * format_ethernet_header_with_length(u8 *s, va_list *args)
Definition: format.c:115
#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
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:82
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
clib_error_t * ethernet_sw_interface_up_down(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: node.c:924
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
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:207
#define SUBINT_CONFIG_MATCH_1_TAG
Definition: ethernet.h:167
static char * ethernet_error_strings[]
Definition: node.c:1090
static vlib_node_registration_t ethernet_input_type_node
(constructor) VLIB_REGISTER_NODE (ethernet_input_type_node)
Definition: node.c:1121
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:423
static uword sparse_vec_index(void *v, uword sparse_index)
Definition: sparse_vec.h:152
u16 cached_next_index
Definition: node.h:463
#define SUBINT_CONFIG_L2
Definition: ethernet.h:171
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:528
void ethernet_register_l2_input(vlib_main_t *vm, u32 node_index)
Definition: node.c:1313
static void vlib_increment_combined_counter(vlib_combined_counter_main_t *cm, u32 cpu_index, u32 index, u32 packet_increment, u32 byte_increment)
Increment a combined counter.
Definition: counter.h:241
vlan_table_t * vlan_pool
Definition: ethernet.h:255
#define ASSERT(truth)
unsigned int u32
Definition: types.h:88
static u32 eth_identify_subint(vnet_hw_interface_t *hi, vlib_buffer_t *b0, u32 match_flags, main_intf_t *main_intf, vlan_intf_t *vlan_intf, qinq_intf_t *qinq_intf, u32 *new_sw_if_index, u8 *error0, u32 *is_l2)
Definition: ethernet.h:462
u8 * format_ethernet_header(u8 *s, va_list *args)
Definition: format.c:190
u32 redirect_l3_next
Definition: ethernet.h:240
#define vnet_buffer(b)
Definition: buffer.h:361
VLIB_NODE_FUNCTION_MULTIARCH(dpdk_input_node, dpdk_input)
static_always_inline int ethernet_frame_is_tagged(u16 type)
Definition: ethernet.h:65
clib_error_t * next_by_ethertype_register(next_by_ethertype_t *l3_next, u32 ethertype, u32 next_index)
Definition: node.c:1207
#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
u64 uword
Definition: types.h:112
#define vec_elt(v, i)
Get vector value at index i.
VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(ethernet_sw_interface_up_down)
static uword ethernet_input_type(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:742
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
struct vnet_sub_interface_t::@154 eth
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:253
vlib_node_registration_t ethernet_input_node
(constructor) VLIB_REGISTER_NODE (ethernet_input_node)
Definition: node.c:77
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:170
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:143
vnet_sw_interface_type_t type
Definition: interface.h:523
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:418
static u32 eth_mac_equal(u8 *mac1, u8 *mac2)
Definition: ethernet.h:514
qinq_table_t * qinq_pool
Definition: ethernet.h:258
u8 data[0]
Packet data.
Definition: buffer.h:158
next_by_ethertype_t l3_next
Definition: ethernet.h:233
#define clib_error_return(e, args...)
Definition: error.h:111
u32 flags
Definition: vhost-user.h:75
#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
ethernet_input_variant_t
Definition: node.c:79
static clib_error_t * ethernet_sw_interface_add_del(vnet_main_t *vnm, u32 sw_if_index, u32 is_create)
Definition: node.c:1041
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 vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:57
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 void ethernet_setup_node(vlib_main_t *vm, u32 node_index)
Definition: ethernet.h:331
Definition: defs.h:46
uword unformat_ethernet_header(unformat_input_t *input, va_list *args)
Definition: format.c:295
u16 * input_next_by_type
Definition: ethernet.h:219
#define SPARSE_VEC_INVALID_INDEX
Definition: sparse_vec.h:68