FD.io VPP  v18.07.1-19-g511ce25
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 <vnet/devices/pipe/pipe.h>
45 #include <vppinfra/sparse_vec.h>
46 #include <vnet/l2/l2_bvi.h>
47 
48 
49 #define foreach_ethernet_input_next \
50  _ (PUNT, "error-punt") \
51  _ (DROP, "error-drop") \
52  _ (LLC, "llc-input")
53 
54 typedef enum
55 {
56 #define _(s,n) ETHERNET_INPUT_NEXT_##s,
58 #undef _
61 
62 typedef struct
63 {
64  u8 packet_data[32];
66 
67 static u8 *
68 format_ethernet_input_trace (u8 * s, va_list * va)
69 {
70  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
71  CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
73 
74  s = format (s, "%U", format_ethernet_header, t->packet_data);
75 
76  return s;
77 }
78 
80 
81 typedef enum
82 {
87 
88 
89 // Parse the ethernet header to extract vlan tags and innermost ethertype
92  vlib_buffer_t * b0,
93  u16 * type,
94  u16 * orig_type,
95  u16 * outer_id, u16 * inner_id, u32 * match_flags)
96 {
97  u8 vlan_count;
98 
99  if (variant == ETHERNET_INPUT_VARIANT_ETHERNET
100  || variant == ETHERNET_INPUT_VARIANT_NOT_L2)
101  {
102  ethernet_header_t *e0;
103 
104  e0 = (void *) (b0->data + b0->current_data);
105 
106  vnet_buffer (b0)->l2_hdr_offset = b0->current_data;
107  b0->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID;
108 
109  vlib_buffer_advance (b0, sizeof (e0[0]));
110 
111  *type = clib_net_to_host_u16 (e0->type);
112  }
113  else if (variant == ETHERNET_INPUT_VARIANT_ETHERNET_TYPE)
114  {
115  // here when prior node was LLC/SNAP processing
116  u16 *e0;
117 
118  e0 = (void *) (b0->data + b0->current_data);
119 
120  vlib_buffer_advance (b0, sizeof (e0[0]));
121 
122  *type = clib_net_to_host_u16 (e0[0]);
123  }
124 
125  // save for distinguishing between dot1q and dot1ad later
126  *orig_type = *type;
127 
128  // default the tags to 0 (used if there is no corresponding tag)
129  *outer_id = 0;
130  *inner_id = 0;
131 
133  vlan_count = 0;
134 
135  // check for vlan encaps
136  if (ethernet_frame_is_tagged (*type))
137  {
139  u16 tag;
140 
142 
143  h0 = (void *) (b0->data + b0->current_data);
144 
145  tag = clib_net_to_host_u16 (h0->priority_cfi_and_id);
146 
147  *outer_id = tag & 0xfff;
148  if (0 == *outer_id)
149  *match_flags &= ~SUBINT_CONFIG_MATCH_1_TAG;
150 
151  *type = clib_net_to_host_u16 (h0->type);
152 
153  vlib_buffer_advance (b0, sizeof (h0[0]));
154  vlan_count = 1;
155 
156  if (*type == ETHERNET_TYPE_VLAN)
157  {
158  // Double tagged packet
160 
161  h0 = (void *) (b0->data + b0->current_data);
162 
163  tag = clib_net_to_host_u16 (h0->priority_cfi_and_id);
164 
165  *inner_id = tag & 0xfff;
166 
167  *type = clib_net_to_host_u16 (h0->type);
168 
169  vlib_buffer_advance (b0, sizeof (h0[0]));
170  vlan_count = 2;
171  if (*type == ETHERNET_TYPE_VLAN)
172  {
173  // More than double tagged packet
175 
176  vlib_buffer_advance (b0, sizeof (h0[0]));
177  vlan_count = 3; // "unknown" number, aka, 3-or-more
178  }
179  }
180  }
181  ethernet_buffer_set_vlan_count (b0, vlan_count);
182 }
183 
184 // Determine the subinterface for this packet, given the result of the
185 // vlan table lookups and vlan header parsing. Check the most specific
186 // matches first.
189  vlib_buffer_t * b0,
190  u32 match_flags,
191  main_intf_t * main_intf,
192  vlan_intf_t * vlan_intf,
193  qinq_intf_t * qinq_intf,
194  u32 * new_sw_if_index, u8 * error0, u32 * is_l2)
195 {
196  u32 matched;
197 
198  matched = eth_identify_subint (hi, b0, match_flags,
199  main_intf, vlan_intf, qinq_intf,
200  new_sw_if_index, error0, is_l2);
201 
202  if (matched)
203  {
204 
205  // Perform L3 my-mac filter
206  // A unicast packet arriving on an L3 interface must have a dmac matching the interface mac.
207  // This is required for promiscuous mode, else we will forward packets we aren't supposed to.
208  if (!(*is_l2))
209  {
210  ethernet_header_t *e0;
211  e0 = (void *) (b0->data + vnet_buffer (b0)->l2_hdr_offset);
212 
213  if (!(ethernet_address_cast (e0->dst_address)))
214  {
215  if (!eth_mac_equal ((u8 *) e0, hi->hw_address))
216  {
217  *error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
218  }
219  }
220  }
221 
222  // Check for down subinterface
223  *error0 = (*new_sw_if_index) != ~0 ? (*error0) : ETHERNET_ERROR_DOWN;
224  }
225 }
226 
229  ethernet_input_variant_t variant,
230  u32 is_l20,
231  u32 type0, vlib_buffer_t * b0, u8 * error0, u8 * next0)
232 {
233  if (PREDICT_FALSE (*error0 != ETHERNET_ERROR_NONE))
234  {
235  // some error occurred
236  *next0 = ETHERNET_INPUT_NEXT_DROP;
237  }
238  else if (is_l20)
239  {
240  // record the L2 len and reset the buffer so the L2 header is preserved
241  u32 eth_start = vnet_buffer (b0)->l2_hdr_offset;
242  vnet_buffer (b0)->l2.l2_len = b0->current_data - eth_start;
243  *next0 = em->l2_next;
244  ASSERT (vnet_buffer (b0)->l2.l2_len ==
247 
248  // check for common IP/MPLS ethertypes
249  }
250  else if (type0 == ETHERNET_TYPE_IP4)
251  {
252  *next0 = em->l3_next.input_next_ip4;
253  }
254  else if (type0 == ETHERNET_TYPE_IP6)
255  {
256  *next0 = em->l3_next.input_next_ip6;
257  }
258  else if (type0 == ETHERNET_TYPE_MPLS)
259  {
260  *next0 = em->l3_next.input_next_mpls;
261 
262  }
263  else if (em->redirect_l3)
264  {
265  // L3 Redirect is on, the cached common next nodes will be
266  // pointing to the redirect node, catch the uncommon types here
267  *next0 = em->redirect_l3_next;
268  }
269  else
270  {
271  // uncommon ethertype, check table
272  u32 i0;
273  i0 = sparse_vec_index (em->l3_next.input_next_by_type, type0);
274  *next0 = vec_elt (em->l3_next.input_next_by_type, i0);
275  *error0 =
276  i0 ==
277  SPARSE_VEC_INVALID_INDEX ? ETHERNET_ERROR_UNKNOWN_TYPE : *error0;
278 
279  // The table is not populated with LLC values, so check that now.
280  // If variant is variant_ethernet then we came from LLC processing. Don't
281  // go back there; drop instead using by keeping the drop/bad table result.
282  if ((type0 < 0x600) && (variant == ETHERNET_INPUT_VARIANT_ETHERNET))
283  {
284  *next0 = ETHERNET_INPUT_NEXT_LLC;
285  }
286  }
287 }
288 
291  vlib_node_runtime_t * node,
292  vlib_frame_t * from_frame,
293  ethernet_input_variant_t variant)
294 {
295  vnet_main_t *vnm = vnet_get_main ();
297  vlib_node_runtime_t *error_node;
298  u32 n_left_from, next_index, *from, *to_next;
299  u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
300  u32 thread_index = vm->thread_index;
301  u32 cached_sw_if_index = ~0;
302  u32 cached_is_l2 = 0; /* shut up gcc */
303  vnet_hw_interface_t *hi = NULL; /* used for main interface only */
304 
305  if (variant != ETHERNET_INPUT_VARIANT_ETHERNET)
306  error_node = vlib_node_get_runtime (vm, ethernet_input_node.index);
307  else
308  error_node = node;
309 
310  from = vlib_frame_vector_args (from_frame);
311  n_left_from = from_frame->n_vectors;
312 
313  if (node->flags & VLIB_NODE_FLAG_TRACE)
315  from,
316  n_left_from,
317  sizeof (from[0]),
318  sizeof (ethernet_input_trace_t));
319 
320  next_index = node->cached_next_index;
321  stats_sw_if_index = node->runtime_data[0];
322  stats_n_packets = stats_n_bytes = 0;
323 
324  while (n_left_from > 0)
325  {
326  u32 n_left_to_next;
327 
328  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
329 
330  while (n_left_from >= 4 && n_left_to_next >= 2)
331  {
332  u32 bi0, bi1;
333  vlib_buffer_t *b0, *b1;
334  u8 next0, next1, error0, error1;
335  u16 type0, orig_type0, type1, orig_type1;
336  u16 outer_id0, inner_id0, outer_id1, inner_id1;
337  u32 match_flags0, match_flags1;
338  u32 old_sw_if_index0, new_sw_if_index0, len0, old_sw_if_index1,
339  new_sw_if_index1, len1;
340  vnet_hw_interface_t *hi0, *hi1;
341  main_intf_t *main_intf0, *main_intf1;
342  vlan_intf_t *vlan_intf0, *vlan_intf1;
343  qinq_intf_t *qinq_intf0, *qinq_intf1;
344  u32 is_l20, is_l21;
345  ethernet_header_t *e0, *e1;
346 
347  /* Prefetch next iteration. */
348  {
349  vlib_buffer_t *b2, *b3;
350 
351  b2 = vlib_get_buffer (vm, from[2]);
352  b3 = vlib_get_buffer (vm, from[3]);
353 
354  vlib_prefetch_buffer_header (b2, STORE);
355  vlib_prefetch_buffer_header (b3, STORE);
356 
357  CLIB_PREFETCH (b2->data, sizeof (ethernet_header_t), LOAD);
358  CLIB_PREFETCH (b3->data, sizeof (ethernet_header_t), LOAD);
359  }
360 
361  bi0 = from[0];
362  bi1 = from[1];
363  to_next[0] = bi0;
364  to_next[1] = bi1;
365  from += 2;
366  to_next += 2;
367  n_left_to_next -= 2;
368  n_left_from -= 2;
369 
370  b0 = vlib_get_buffer (vm, bi0);
371  b1 = vlib_get_buffer (vm, bi1);
372 
373  error0 = error1 = ETHERNET_ERROR_NONE;
374  e0 = vlib_buffer_get_current (b0);
375  type0 = clib_net_to_host_u16 (e0->type);
376  e1 = vlib_buffer_get_current (b1);
377  type1 = clib_net_to_host_u16 (e1->type);
378 
379  /* Speed-path for the untagged case */
382  type1)))
383  {
384  main_intf_t *intf0;
385  subint_config_t *subint0;
386  u32 sw_if_index0, sw_if_index1;
387 
388  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
389  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
390  is_l20 = cached_is_l2;
391 
392  /* This is probably wholly unnecessary */
393  if (PREDICT_FALSE (sw_if_index0 != sw_if_index1))
394  goto slowpath;
395 
396  /* Now sw_if_index0 == sw_if_index1 */
397  if (PREDICT_FALSE (cached_sw_if_index != sw_if_index0))
398  {
399  cached_sw_if_index = sw_if_index0;
400  hi = vnet_get_sup_hw_interface (vnm, sw_if_index0);
401  intf0 = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
402  subint0 = &intf0->untagged_subint;
403  cached_is_l2 = is_l20 = subint0->flags & SUBINT_CONFIG_L2;
404  }
405 
406  vnet_buffer (b0)->l2_hdr_offset = b0->current_data;
407  vnet_buffer (b1)->l2_hdr_offset = b1->current_data;
408  vnet_buffer (b0)->l3_hdr_offset =
409  vnet_buffer (b0)->l2_hdr_offset + sizeof (ethernet_header_t);
410  vnet_buffer (b1)->l3_hdr_offset =
411  vnet_buffer (b1)->l2_hdr_offset + sizeof (ethernet_header_t);
412  b0->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
413  VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
414  b1->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
415  VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
416 
417  if (PREDICT_TRUE (is_l20 != 0))
418  {
419  next0 = em->l2_next;
420  vnet_buffer (b0)->l2.l2_len = sizeof (ethernet_header_t);
421  next1 = em->l2_next;
422  vnet_buffer (b1)->l2.l2_len = sizeof (ethernet_header_t);
423  }
424  else
425  {
426  if (!ethernet_address_cast (e0->dst_address) &&
427  (hi->hw_address != 0) &&
428  !eth_mac_equal ((u8 *) e0, hi->hw_address))
429  error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
430  if (!ethernet_address_cast (e1->dst_address) &&
431  (hi->hw_address != 0) &&
432  !eth_mac_equal ((u8 *) e1, hi->hw_address))
433  error1 = ETHERNET_ERROR_L3_MAC_MISMATCH;
434  vlib_buffer_advance (b0, sizeof (ethernet_header_t));
435  determine_next_node (em, variant, 0, type0, b0,
436  &error0, &next0);
437  vlib_buffer_advance (b1, sizeof (ethernet_header_t));
438  determine_next_node (em, variant, 0, type1, b1,
439  &error1, &next1);
440  }
441  goto ship_it01;
442  }
443 
444  /* Slow-path for the tagged case */
445  slowpath:
446  parse_header (variant,
447  b0,
448  &type0,
449  &orig_type0, &outer_id0, &inner_id0, &match_flags0);
450 
451  parse_header (variant,
452  b1,
453  &type1,
454  &orig_type1, &outer_id1, &inner_id1, &match_flags1);
455 
456  old_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
457  old_sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
458 
460  vnm,
461  old_sw_if_index0,
462  orig_type0,
463  outer_id0,
464  inner_id0,
465  &hi0,
466  &main_intf0, &vlan_intf0, &qinq_intf0);
467 
469  vnm,
470  old_sw_if_index1,
471  orig_type1,
472  outer_id1,
473  inner_id1,
474  &hi1,
475  &main_intf1, &vlan_intf1, &qinq_intf1);
476 
477  identify_subint (hi0,
478  b0,
479  match_flags0,
480  main_intf0,
481  vlan_intf0,
482  qinq_intf0, &new_sw_if_index0, &error0, &is_l20);
483 
484  identify_subint (hi1,
485  b1,
486  match_flags1,
487  main_intf1,
488  vlan_intf1,
489  qinq_intf1, &new_sw_if_index1, &error1, &is_l21);
490 
491  // Save RX sw_if_index for later nodes
492  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
493  error0 !=
494  ETHERNET_ERROR_NONE ? old_sw_if_index0 : new_sw_if_index0;
495  vnet_buffer (b1)->sw_if_index[VLIB_RX] =
496  error1 !=
497  ETHERNET_ERROR_NONE ? old_sw_if_index1 : new_sw_if_index1;
498 
499  // Check if there is a stat to take (valid and non-main sw_if_index for pkt 0 or pkt 1)
500  if (((new_sw_if_index0 != ~0)
501  && (new_sw_if_index0 != old_sw_if_index0))
502  || ((new_sw_if_index1 != ~0)
503  && (new_sw_if_index1 != old_sw_if_index1)))
504  {
505 
506  len0 = vlib_buffer_length_in_chain (vm, b0) + b0->current_data
507  - vnet_buffer (b0)->l2_hdr_offset;
508  len1 = vlib_buffer_length_in_chain (vm, b1) + b1->current_data
509  - vnet_buffer (b1)->l2_hdr_offset;
510 
511  stats_n_packets += 2;
512  stats_n_bytes += len0 + len1;
513 
514  if (PREDICT_FALSE
515  (!(new_sw_if_index0 == stats_sw_if_index
516  && new_sw_if_index1 == stats_sw_if_index)))
517  {
518  stats_n_packets -= 2;
519  stats_n_bytes -= len0 + len1;
520 
521  if (new_sw_if_index0 != old_sw_if_index0
522  && new_sw_if_index0 != ~0)
524  interface_main.combined_sw_if_counters
525  +
527  thread_index,
528  new_sw_if_index0, 1,
529  len0);
530  if (new_sw_if_index1 != old_sw_if_index1
531  && new_sw_if_index1 != ~0)
533  interface_main.combined_sw_if_counters
534  +
536  thread_index,
537  new_sw_if_index1, 1,
538  len1);
539 
540  if (new_sw_if_index0 == new_sw_if_index1)
541  {
542  if (stats_n_packets > 0)
543  {
547  thread_index,
548  stats_sw_if_index,
549  stats_n_packets, stats_n_bytes);
550  stats_n_packets = stats_n_bytes = 0;
551  }
552  stats_sw_if_index = new_sw_if_index0;
553  }
554  }
555  }
556 
557  if (variant == ETHERNET_INPUT_VARIANT_NOT_L2)
558  is_l20 = is_l21 = 0;
559 
560  determine_next_node (em, variant, is_l20, type0, b0, &error0,
561  &next0);
562  determine_next_node (em, variant, is_l21, type1, b1, &error1,
563  &next1);
564  vnet_buffer (b0)->l3_hdr_offset = vnet_buffer (b0)->l2_hdr_offset +
565  vnet_buffer (b0)->l2.l2_len;
566  vnet_buffer (b1)->l3_hdr_offset = vnet_buffer (b1)->l2_hdr_offset +
567  vnet_buffer (b1)->l2.l2_len;
568  b0->flags |= VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
569  b1->flags |= VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
570 
571  ship_it01:
572  b0->error = error_node->errors[error0];
573  b1->error = error_node->errors[error1];
574 
575  // verify speculative enqueue
576  vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
577  n_left_to_next, bi0, bi1, next0,
578  next1);
579  }
580 
581  while (n_left_from > 0 && n_left_to_next > 0)
582  {
583  u32 bi0;
584  vlib_buffer_t *b0;
585  u8 error0, next0;
586  u16 type0, orig_type0;
587  u16 outer_id0, inner_id0;
588  u32 match_flags0;
589  u32 old_sw_if_index0, new_sw_if_index0, len0;
590  vnet_hw_interface_t *hi0;
591  main_intf_t *main_intf0;
592  vlan_intf_t *vlan_intf0;
593  qinq_intf_t *qinq_intf0;
594  ethernet_header_t *e0;
595  u32 is_l20;
596 
597  // Prefetch next iteration
598  if (n_left_from > 1)
599  {
600  vlib_buffer_t *p2;
601 
602  p2 = vlib_get_buffer (vm, from[1]);
603  vlib_prefetch_buffer_header (p2, STORE);
605  }
606 
607  bi0 = from[0];
608  to_next[0] = bi0;
609  from += 1;
610  to_next += 1;
611  n_left_from -= 1;
612  n_left_to_next -= 1;
613 
614  b0 = vlib_get_buffer (vm, bi0);
615 
616  error0 = ETHERNET_ERROR_NONE;
617  e0 = vlib_buffer_get_current (b0);
618  type0 = clib_net_to_host_u16 (e0->type);
619 
620  /* Speed-path for the untagged case */
622  && !ethernet_frame_is_tagged (type0)))
623  {
624  main_intf_t *intf0;
625  subint_config_t *subint0;
626  u32 sw_if_index0;
627 
628  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
629  is_l20 = cached_is_l2;
630 
631  if (PREDICT_FALSE (cached_sw_if_index != sw_if_index0))
632  {
633  cached_sw_if_index = sw_if_index0;
634  hi = vnet_get_sup_hw_interface (vnm, sw_if_index0);
635  intf0 = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
636  subint0 = &intf0->untagged_subint;
637  cached_is_l2 = is_l20 = subint0->flags & SUBINT_CONFIG_L2;
638  }
639 
640  vnet_buffer (b0)->l2_hdr_offset = b0->current_data;
641  vnet_buffer (b0)->l3_hdr_offset =
642  vnet_buffer (b0)->l2_hdr_offset + sizeof (ethernet_header_t);
643  b0->flags |= VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
644  VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
645 
646  if (PREDICT_TRUE (is_l20 != 0))
647  {
648  next0 = em->l2_next;
649  vnet_buffer (b0)->l2.l2_len = sizeof (ethernet_header_t);
650  }
651  else
652  {
653  if (!ethernet_address_cast (e0->dst_address) &&
654  (hi->hw_address != 0) &&
655  !eth_mac_equal ((u8 *) e0, hi->hw_address))
656  error0 = ETHERNET_ERROR_L3_MAC_MISMATCH;
657  determine_next_node (em, variant, 0, type0, b0,
658  &error0, &next0);
659  vlib_buffer_advance (b0, sizeof (ethernet_header_t));
660  }
661  goto ship_it0;
662  }
663 
664  /* Slow-path for the tagged case */
665  parse_header (variant,
666  b0,
667  &type0,
668  &orig_type0, &outer_id0, &inner_id0, &match_flags0);
669 
670  old_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
671 
673  vnm,
674  old_sw_if_index0,
675  orig_type0,
676  outer_id0,
677  inner_id0,
678  &hi0,
679  &main_intf0, &vlan_intf0, &qinq_intf0);
680 
681  identify_subint (hi0,
682  b0,
683  match_flags0,
684  main_intf0,
685  vlan_intf0,
686  qinq_intf0, &new_sw_if_index0, &error0, &is_l20);
687 
688  // Save RX sw_if_index for later nodes
689  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
690  error0 !=
691  ETHERNET_ERROR_NONE ? old_sw_if_index0 : new_sw_if_index0;
692 
693  // Increment subinterface stats
694  // Note that interface-level counters have already been incremented
695  // prior to calling this function. Thus only subinterface counters
696  // are incremented here.
697  //
698  // Interface level counters include packets received on the main
699  // interface and all subinterfaces. Subinterface level counters
700  // include only those packets received on that subinterface
701  // Increment stats if the subint is valid and it is not the main intf
702  if ((new_sw_if_index0 != ~0)
703  && (new_sw_if_index0 != old_sw_if_index0))
704  {
705 
706  len0 = vlib_buffer_length_in_chain (vm, b0) + b0->current_data
707  - vnet_buffer (b0)->l2_hdr_offset;
708 
709  stats_n_packets += 1;
710  stats_n_bytes += len0;
711 
712  // Batch stat increments from the same subinterface so counters
713  // don't need to be incremented for every packet.
714  if (PREDICT_FALSE (new_sw_if_index0 != stats_sw_if_index))
715  {
716  stats_n_packets -= 1;
717  stats_n_bytes -= len0;
718 
719  if (new_sw_if_index0 != ~0)
723  thread_index, new_sw_if_index0, 1, len0);
724  if (stats_n_packets > 0)
725  {
729  thread_index,
730  stats_sw_if_index, stats_n_packets, stats_n_bytes);
731  stats_n_packets = stats_n_bytes = 0;
732  }
733  stats_sw_if_index = new_sw_if_index0;
734  }
735  }
736 
737  if (variant == ETHERNET_INPUT_VARIANT_NOT_L2)
738  is_l20 = 0;
739 
740  determine_next_node (em, variant, is_l20, type0, b0, &error0,
741  &next0);
742  vnet_buffer (b0)->l3_hdr_offset = vnet_buffer (b0)->l2_hdr_offset +
743  vnet_buffer (b0)->l2.l2_len;
744  b0->flags |= VNET_BUFFER_F_L3_HDR_OFFSET_VALID;
745 
746  ship_it0:
747  b0->error = error_node->errors[error0];
748 
749  // verify speculative enqueue
750  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
751  to_next, n_left_to_next,
752  bi0, next0);
753  }
754 
755  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
756  }
757 
758  // Increment any remaining batched stats
759  if (stats_n_packets > 0)
760  {
764  thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
765  node->runtime_data[0] = stats_sw_if_index;
766  }
767 
768  return from_frame->n_vectors;
769 }
770 
771 static uword
773  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
774 {
775  return ethernet_input_inline (vm, node, from_frame,
777 }
778 
779 static uword
781  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
782 {
783  return ethernet_input_inline (vm, node, from_frame,
785 }
786 
787 static uword
789  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
790 {
791  return ethernet_input_inline (vm, node, from_frame,
793 }
794 
795 
796 // Return the subinterface config struct for the given sw_if_index
797 // Also return via parameter the appropriate match flags for the
798 // configured number of tags.
799 // On error (unsupported or not ethernet) return 0.
800 static subint_config_t *
802  u32 sw_if_index,
803  u32 * flags, u32 * unsupported)
804 {
808  main_intf_t *main_intf;
809  vlan_table_t *vlan_table;
810  qinq_table_t *qinq_table;
811  subint_config_t *subint = 0;
812 
813  hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
814 
815  if (!hi || (hi->hw_class_index != ethernet_hw_interface_class.index))
816  {
817  *unsupported = 0;
818  goto done; // non-ethernet interface
819  }
820 
821  // ensure there's an entry for the main intf (shouldn't really be necessary)
823  main_intf = vec_elt_at_index (em->main_intfs, hi->hw_if_index);
824 
825  // Locate the subint for the given ethernet config
826  si = vnet_get_sw_interface (vnm, sw_if_index);
827 
828  if (si->type == VNET_SW_INTERFACE_TYPE_P2P)
829  {
830  p2p_ethernet_main_t *p2pm = &p2p_main;
831  u32 p2pe_sw_if_index =
833  if (p2pe_sw_if_index == ~0)
834  {
835  pool_get (p2pm->p2p_subif_pool, subint);
836  si->p2p.pool_index = subint - p2pm->p2p_subif_pool;
837  }
838  else
839  subint = vec_elt_at_index (p2pm->p2p_subif_pool, si->p2p.pool_index);
840  *flags = SUBINT_CONFIG_P2P;
841  }
842  else if (si->type == VNET_SW_INTERFACE_TYPE_PIPE)
843  {
844  pipe_t *pipe;
845 
846  pipe = pipe_get (sw_if_index);
847  subint = &pipe->subint;
848  *flags = SUBINT_CONFIG_P2P;
849  }
850  else if (si->sub.eth.flags.default_sub)
851  {
852  subint = &main_intf->default_subint;
853  *flags = SUBINT_CONFIG_MATCH_0_TAG |
856  }
857  else if ((si->sub.eth.flags.no_tags) || (si->sub.eth.raw_flags == 0))
858  {
859  // if no flags are set then this is a main interface
860  // so treat as untagged
861  subint = &main_intf->untagged_subint;
862  *flags = SUBINT_CONFIG_MATCH_0_TAG;
863  }
864  else
865  {
866  // one or two tags
867  // first get the vlan table
868  if (si->sub.eth.flags.dot1ad)
869  {
870  if (main_intf->dot1ad_vlans == 0)
871  {
872  // Allocate a vlan table from the pool
873  pool_get (em->vlan_pool, vlan_table);
874  main_intf->dot1ad_vlans = vlan_table - em->vlan_pool;
875  }
876  else
877  {
878  // Get ptr to existing vlan table
879  vlan_table =
880  vec_elt_at_index (em->vlan_pool, main_intf->dot1ad_vlans);
881  }
882  }
883  else
884  { // dot1q
885  if (main_intf->dot1q_vlans == 0)
886  {
887  // Allocate a vlan table from the pool
888  pool_get (em->vlan_pool, vlan_table);
889  main_intf->dot1q_vlans = vlan_table - em->vlan_pool;
890  }
891  else
892  {
893  // Get ptr to existing vlan table
894  vlan_table =
895  vec_elt_at_index (em->vlan_pool, main_intf->dot1q_vlans);
896  }
897  }
898 
899  if (si->sub.eth.flags.one_tag)
900  {
901  *flags = si->sub.eth.flags.exact_match ?
905 
906  if (si->sub.eth.flags.outer_vlan_id_any)
907  {
908  // not implemented yet
909  *unsupported = 1;
910  goto done;
911  }
912  else
913  {
914  // a single vlan, a common case
915  subint =
916  &vlan_table->vlans[si->sub.eth.
917  outer_vlan_id].single_tag_subint;
918  }
919 
920  }
921  else
922  {
923  // Two tags
924  *flags = si->sub.eth.flags.exact_match ?
927 
928  if (si->sub.eth.flags.outer_vlan_id_any
929  && si->sub.eth.flags.inner_vlan_id_any)
930  {
931  // not implemented yet
932  *unsupported = 1;
933  goto done;
934  }
935 
936  if (si->sub.eth.flags.inner_vlan_id_any)
937  {
938  // a specific outer and "any" inner
939  // don't need a qinq table for this
940  subint =
941  &vlan_table->vlans[si->sub.eth.
942  outer_vlan_id].inner_any_subint;
943  if (si->sub.eth.flags.exact_match)
944  {
945  *flags = SUBINT_CONFIG_MATCH_2_TAG;
946  }
947  else
948  {
949  *flags = SUBINT_CONFIG_MATCH_2_TAG |
951  }
952  }
953  else
954  {
955  // a specific outer + specifc innner vlan id, a common case
956 
957  // get the qinq table
958  if (vlan_table->vlans[si->sub.eth.outer_vlan_id].qinqs == 0)
959  {
960  // Allocate a qinq table from the pool
961  pool_get (em->qinq_pool, qinq_table);
962  vlan_table->vlans[si->sub.eth.outer_vlan_id].qinqs =
963  qinq_table - em->qinq_pool;
964  }
965  else
966  {
967  // Get ptr to existing qinq table
968  qinq_table =
970  vlan_table->vlans[si->sub.
971  eth.outer_vlan_id].
972  qinqs);
973  }
974  subint = &qinq_table->vlans[si->sub.eth.inner_vlan_id].subint;
975  }
976  }
977  }
978 
979 done:
980  return subint;
981 }
982 
983 clib_error_t *
985 {
986  subint_config_t *subint;
987  u32 dummy_flags;
988  u32 dummy_unsup;
989  clib_error_t *error = 0;
990 
991  // Find the config for this subinterface
992  subint =
993  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
994  &dummy_unsup);
995 
996  if (subint == 0)
997  {
998  // not implemented yet or not ethernet
999  goto done;
1000  }
1001 
1002  subint->sw_if_index =
1003  ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? sw_if_index : ~0);
1004 
1005 done:
1006  return error;
1007 }
1008 
1010 
1011 
1012 // Set the L2/L3 mode for the subinterface
1013 void
1015 {
1016  subint_config_t *subint;
1017  u32 dummy_flags;
1018  u32 dummy_unsup;
1019  int is_port;
1020  vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, sw_if_index);
1021 
1022  is_port = !(sw->type == VNET_SW_INTERFACE_TYPE_SUB);
1023 
1024  // Find the config for this subinterface
1025  subint =
1026  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
1027  &dummy_unsup);
1028 
1029  if (subint == 0)
1030  {
1031  // unimplemented or not ethernet
1032  goto done;
1033  }
1034 
1035  // Double check that the config we found is for our interface (or the interface is down)
1036  ASSERT ((subint->sw_if_index == sw_if_index) | (subint->sw_if_index == ~0));
1037 
1038  if (l2)
1039  {
1040  subint->flags |= SUBINT_CONFIG_L2;
1041  if (is_port)
1042  subint->flags |=
1045  }
1046  else
1047  {
1048  subint->flags &= ~SUBINT_CONFIG_L2;
1049  if (is_port)
1050  subint->flags &=
1053  }
1054 
1055 done:
1056  return;
1057 }
1058 
1059 /*
1060  * Set the L2/L3 mode for the subinterface regardless of port
1061  */
1062 void
1064  u32 sw_if_index, u32 l2)
1065 {
1066  subint_config_t *subint;
1067  u32 dummy_flags;
1068  u32 dummy_unsup;
1069 
1070  /* Find the config for this subinterface */
1071  subint =
1072  ethernet_sw_interface_get_config (vnm, sw_if_index, &dummy_flags,
1073  &dummy_unsup);
1074 
1075  if (subint == 0)
1076  {
1077  /* unimplemented or not ethernet */
1078  goto done;
1079  }
1080 
1081  /*
1082  * Double check that the config we found is for our interface (or the
1083  * interface is down)
1084  */
1085  ASSERT ((subint->sw_if_index == sw_if_index) | (subint->sw_if_index == ~0));
1086 
1087  if (l2)
1088  {
1089  subint->flags |= SUBINT_CONFIG_L2;
1090  }
1091  else
1092  {
1093  subint->flags &= ~SUBINT_CONFIG_L2;
1094  }
1095 
1096 done:
1097  return;
1098 }
1099 
1100 static clib_error_t *
1102  u32 sw_if_index, u32 is_create)
1103 {
1104  clib_error_t *error = 0;
1105  subint_config_t *subint;
1106  u32 match_flags;
1107  u32 unsupported = 0;
1108 
1109  // Find the config for this subinterface
1110  subint =
1111  ethernet_sw_interface_get_config (vnm, sw_if_index, &match_flags,
1112  &unsupported);
1113 
1114  if (subint == 0)
1115  {
1116  // not implemented yet or not ethernet
1117  if (unsupported)
1118  {
1119  // this is the NYI case
1120  error = clib_error_return (0, "not implemented yet");
1121  }
1122  goto done;
1123  }
1124 
1125  if (!is_create)
1126  {
1127  subint->flags = 0;
1128  return error;
1129  }
1130 
1131  // Initialize the subint
1132  if (subint->flags & SUBINT_CONFIG_VALID)
1133  {
1134  // Error vlan already in use
1135  error = clib_error_return (0, "vlan is already in use");
1136  }
1137  else
1138  {
1139  // Note that config is L3 by default
1140  subint->flags = SUBINT_CONFIG_VALID | match_flags;
1141  subint->sw_if_index = ~0; // because interfaces are initially down
1142  }
1143 
1144 done:
1145  return error;
1146 }
1147 
1149 
1150 static char *ethernet_error_strings[] = {
1151 #define ethernet_error(n,c,s) s,
1152 #include "error.def"
1153 #undef ethernet_error
1154 };
1155 
1156 /* *INDENT-OFF* */
1158  .function = ethernet_input,
1159  .name = "ethernet-input",
1160  /* Takes a vector of packets. */
1161  .vector_size = sizeof (u32),
1162  .n_errors = ETHERNET_N_ERROR,
1163  .error_strings = ethernet_error_strings,
1164  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1165  .next_nodes = {
1166 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1168 #undef _
1169  },
1170  .format_buffer = format_ethernet_header_with_length,
1171  .format_trace = format_ethernet_input_trace,
1172  .unformat_buffer = unformat_ethernet_header,
1173 };
1174 /* *INDENT-ON* */
1175 
1176 /* *INDENT-OFF* */
1178 /* *INDENT-ON* */
1179 
1180 /* *INDENT-OFF* */
1182  .function = ethernet_input_type,
1183  .name = "ethernet-input-type",
1184  /* Takes a vector of packets. */
1185  .vector_size = sizeof (u32),
1186  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1187  .next_nodes = {
1188 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1190 #undef _
1191  },
1192 };
1193 /* *INDENT-ON* */
1194 
1195 /* *INDENT-OFF* */
1197 /* *INDENT-ON* */
1198 
1199 /* *INDENT-OFF* */
1201  .function = ethernet_input_not_l2,
1202  .name = "ethernet-input-not-l2",
1203  /* Takes a vector of packets. */
1204  .vector_size = sizeof (u32),
1205  .n_next_nodes = ETHERNET_INPUT_N_NEXT,
1206  .next_nodes = {
1207 #define _(s,n) [ETHERNET_INPUT_NEXT_##s] = n,
1209 #undef _
1210  },
1211 };
1212 /* *INDENT-ON* */
1213 
1214 
1215 /* *INDENT-OFF* */
1218 /* *INDENT-ON* */
1219 
1220 
1221 void
1223  vnet_hw_interface_t * hi, u32 enable)
1224 {
1225  // Insure all packets go to ethernet-input (i.e. untagged ipv4 packets
1226  // don't go directly to ip4-input)
1228  (vnm, hi->hw_if_index, enable ? ethernet_input_node.index : ~0);
1229 }
1230 
1231 
1232 /*
1233  * Initialization and registration for the next_by_ethernet structure
1234  */
1235 
1236 clib_error_t *
1238 {
1240  ( /* elt bytes */ sizeof (l3_next->input_next_by_type[0]),
1241  /* bits in index */ BITS (((ethernet_header_t *) 0)->type));
1242 
1244  ETHERNET_INPUT_NEXT_DROP);
1246  ETHERNET_INPUT_NEXT_PUNT);
1247  l3_next->sparse_index_by_input_next_index[ETHERNET_INPUT_NEXT_DROP] =
1249  l3_next->sparse_index_by_input_next_index[ETHERNET_INPUT_NEXT_PUNT] =
1251 
1252  /*
1253  * Make sure we don't wipe out an ethernet registration by mistake
1254  * Can happen if init function ordering constraints are missing.
1255  */
1256  if (CLIB_DEBUG > 0)
1257  {
1260  }
1261 
1262  return 0;
1263 }
1264 
1265 // Add an ethertype -> next index mapping to the structure
1266 clib_error_t *
1268  u32 ethertype, u32 next_index)
1269 {
1270  u32 i;
1271  u16 *n;
1273 
1274  if (CLIB_DEBUG > 0)
1275  {
1278  }
1279 
1280  /* Setup ethernet type -> next index sparse vector mapping. */
1281  n = sparse_vec_validate (l3_next->input_next_by_type, ethertype);
1282  n[0] = next_index;
1283 
1284  /* Rebuild next index -> sparse index inverse mapping when sparse vector
1285  is updated. */
1286  vec_validate (l3_next->sparse_index_by_input_next_index, next_index);
1287  for (i = 1; i < vec_len (l3_next->input_next_by_type); i++)
1288  l3_next->
1289  sparse_index_by_input_next_index[l3_next->input_next_by_type[i]] = i;
1290 
1291  // do not allow the cached next index's to be updated if L3
1292  // redirect is enabled, as it will have overwritten them
1293  if (!em->redirect_l3)
1294  {
1295  // Cache common ethertypes directly
1296  if (ethertype == ETHERNET_TYPE_IP4)
1297  {
1298  l3_next->input_next_ip4 = next_index;
1299  }
1300  else if (ethertype == ETHERNET_TYPE_IP6)
1301  {
1302  l3_next->input_next_ip6 = next_index;
1303  }
1304  else if (ethertype == ETHERNET_TYPE_MPLS)
1305  {
1306  l3_next->input_next_mpls = next_index;
1307  }
1308  }
1309  return 0;
1310 }
1311 
1312 
1313 static clib_error_t *
1315 {
1317  __attribute__ ((unused)) vlan_table_t *invalid_vlan_table;
1318  __attribute__ ((unused)) qinq_table_t *invalid_qinq_table;
1319 
1323 
1325 
1326  // Initialize pools and vector for vlan parsing
1327  vec_validate (em->main_intfs, 10); // 10 main interfaces
1328  pool_alloc (em->vlan_pool, 10);
1329  pool_alloc (em->qinq_pool, 1);
1330 
1331  // The first vlan pool will always be reserved for an invalid table
1332  pool_get (em->vlan_pool, invalid_vlan_table); // first id = 0
1333  // The first qinq pool will always be reserved for an invalid table
1334  pool_get (em->qinq_pool, invalid_qinq_table); // first id = 0
1335 
1336  return 0;
1337 }
1338 
1340 
1341 void
1343  ethernet_type_t type, u32 node_index)
1344 {
1347  u32 i;
1348 
1349  {
1351  if (error)
1352  clib_error_report (error);
1353  }
1354 
1355  ti = ethernet_get_type_info (em, type);
1356  ti->node_index = node_index;
1357  ti->next_index = vlib_node_add_next (vm,
1358  ethernet_input_node.index, node_index);
1359  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1360  ASSERT (i == ti->next_index);
1361 
1362  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1363  ASSERT (i == ti->next_index);
1364 
1365  // Add the L3 node for this ethertype to the next nodes structure
1366  next_by_ethertype_register (&em->l3_next, type, ti->next_index);
1367 
1368  // Call the registration functions for other nodes that want a mapping
1369  l2bvi_register_input_type (vm, type, node_index);
1370 }
1371 
1372 void
1374 {
1376  u32 i;
1377 
1378  em->l2_next =
1379  vlib_node_add_next (vm, ethernet_input_node.index, node_index);
1380 
1381  /*
1382  * Even if we never use these arcs, we have to align the next indices...
1383  */
1384  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1385 
1386  ASSERT (i == em->l2_next);
1387 
1388  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1389  ASSERT (i == em->l2_next);
1390 }
1391 
1392 // Register a next node for L3 redirect, and enable L3 redirect
1393 void
1395 {
1397  u32 i;
1398 
1399  em->redirect_l3 = 1;
1401  ethernet_input_node.index,
1402  node_index);
1403  /*
1404  * Change the cached next nodes to the redirect node
1405  */
1409 
1410  /*
1411  * Even if we never use these arcs, we have to align the next indices...
1412  */
1413  i = vlib_node_add_next (vm, ethernet_input_type_node.index, node_index);
1414 
1415  ASSERT (i == em->redirect_l3_next);
1416 
1417  i = vlib_node_add_next (vm, ethernet_input_not_l2_node.index, node_index);
1418 
1419  ASSERT (i == em->redirect_l3_next);
1420 }
1421 
1422 /*
1423  * fd.io coding-style-patch-verification: ON
1424  *
1425  * Local Variables:
1426  * eval: (c-set-style "gnu")
1427  * End:
1428  */
#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:188
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:290
#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:329
vnet_interface_main_t interface_main
Definition: vnet.h:56
vnet_p2p_sub_interface_t p2p
Definition: interface.h:701
#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:1241
void ethernet_register_l2_input(vlib_main_t *vm, u32 node_index)
Definition: node.c:1373
#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
u32 thread_index
Definition: main.h:179
static subint_config_t * ethernet_sw_interface_get_config(vnet_main_t *vnm, u32 sw_if_index, u32 *flags, u32 *unsupported)
Definition: node.c:801
ethernet_input_variant_t
Definition: node.c:81
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:64
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:228
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:1101
vlib_node_registration_t ethernet_input_node
(constructor) VLIB_REGISTER_NODE (ethernet_input_node)
Definition: node.c:79
ethernet_main_t ethernet_main
Definition: init.c:45
represenation of a pipe interface
Definition: pipe.h:24
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:1237
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:811
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:1150
ethernet_input_next_t
Definition: node.c:54
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:1314
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:698
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:984
static uword ethernet_input_not_l2(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:788
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:1181
#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 flags
Definition: vhost_user.h:110
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
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:780
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
struct vnet_sub_interface_t::@200::@201::@203 flags
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:91
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:661
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:1394
void ethernet_sw_interface_set_l2_mode_noport(vnet_main_t *vnm, u32 sw_if_index, u32 l2)
Definition: node.c:1063
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:228
void ethernet_register_input_type(vlib_main_t *vm, ethernet_type_t type, u32 node_index)
Definition: node.c:1342
#define clib_error_report(e)
Definition: error.h:113
static u8 * format_ethernet_input_trace(u8 *s, va_list *va)
Definition: node.c:68
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:1267
struct vnet_sub_interface_t::@200 eth
#define vec_elt(v, i)
Get vector value at index i.
subint_config_t subint
Sub-interface config.
Definition: pipe.h:30
static vlib_node_registration_t ethernet_input_not_l2_node
(constructor) VLIB_REGISTER_NODE (ethernet_input_not_l2_node)
Definition: node.c:1200
struct _vlib_node_registration vlib_node_registration_t
#define foreach_ethernet_input_next
Definition: node.c:49
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)
pipe_t * pipe_get(u32 sw_if_index)
Get the pipe instnace based on one end.
Definition: pipe.c:95
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:1014
static uword ethernet_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:772
#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:656
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
#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:1216
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