FD.io VPP  v17.07.01-10-g3be13f0
Vector Packet Processing
l2_output.c
Go to the documentation of this file.
1 /*
2  * l2_output.c : layer 2 output packet processing
3  *
4  * Copyright (c) 2013 Cisco and/or its affiliates.
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #include <vlib/vlib.h>
19 #include <vnet/vnet.h>
20 #include <vnet/pg/pg.h>
21 #include <vnet/ethernet/ethernet.h>
22 #include <vlib/cli.h>
23 
24 #include <vppinfra/error.h>
25 #include <vppinfra/hash.h>
26 #include <vnet/l2/feat_bitmap.h>
27 #include <vnet/l2/l2_output.h>
28 
29 
30 /* Feature graph node names */
31 static char *l2output_feat_names[] = {
32 #define _(sym,name) name,
34 #undef _
35 };
36 
37 char **
39 {
40  return l2output_feat_names;
41 }
42 
44 
45 typedef struct
46 {
47  /* per-pkt trace data */
48  u8 src[6];
49  u8 dst[6];
51  u8 raw[12]; /* raw data */
53 
54 /* packet trace format function */
55 static u8 *
56 format_l2output_trace (u8 * s, va_list * args)
57 {
58  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
59  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
60  l2output_trace_t *t = va_arg (*args, l2output_trace_t *);
61 
62  s = format (s, "l2-output: sw_if_index %d dst %U src %U data "
63  "%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
64  t->sw_if_index,
67  t->raw[0], t->raw[1], t->raw[2], t->raw[3], t->raw[4],
68  t->raw[5], t->raw[6], t->raw[7], t->raw[8], t->raw[9],
69  t->raw[10], t->raw[11]);
70 
71  return s;
72 }
73 
74 
75 static char *l2output_error_strings[] = {
76 #define _(sym,string) string,
78 #undef _
79 };
80 
81 /**
82  * Check for split horizon violations.
83  * Return 0 if split horizon check passes, otherwise return non-zero.
84  * Packets should not be transmitted out an interface with the same
85  * split-horizon group as the input interface, except if the @c shg is 0
86  * in which case the check always passes.
87  */
90 {
91  if (PREDICT_TRUE (shg1 == 0))
92  {
93  return 0;
94  }
95  else
96  {
97  return shg1 == shg2;
98  }
99 }
100 
103  u32 feature_bitmap, vlib_buffer_t * b, u32 * next)
104 {
105  if (PREDICT_FALSE (config->out_vtr_flag))
106  {
107  /* Perform pre-vtr EFP filter check if configured */
108  if (config->output_vtr.push_and_pop_bytes)
109  {
110  /*
111  * Perform output vlan tag rewrite and the pre-vtr EFP filter check.
112  * The EFP Filter only needs to be run if there is an output VTR
113  * configured. The flag for the post-vtr EFP Filter node is used
114  * to trigger the pre-vtr check as well.
115  */
116  u32 failed1 = (feature_bitmap & L2OUTPUT_FEAT_EFP_FILTER)
117  && (l2_efp_filter_process (b, &(config->input_vtr)));
118  u32 failed2 = l2_vtr_process (b, &(config->output_vtr));
119 
120  if (PREDICT_FALSE (failed1 | failed2))
121  {
122  *next = L2OUTPUT_NEXT_DROP;
123  if (failed2)
124  {
125  b->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
126  }
127  if (failed1)
128  {
129  b->error = node->errors[L2OUTPUT_ERROR_EFP_DROP];
130  }
131  }
132  }
133  // perform the PBB rewrite
134  else if (config->output_pbb_vtr.push_and_pop_bytes)
135  {
136  u32 failed = l2_pbb_process (b, &(config->output_pbb_vtr));
137  if (PREDICT_FALSE (failed))
138  {
139  *next = L2OUTPUT_NEXT_DROP;
140  b->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
141  }
142  }
143  }
144 }
145 
146 
148 
151  vlib_frame_t * frame, int do_trace)
152 {
153  u32 n_left_from, *from, *to_next;
154  l2output_next_t next_index;
156  u32 cached_sw_if_index;
157  u32 cached_next_index;
158 
159  /* Invalidate cache */
160  cached_sw_if_index = ~0;
161  cached_next_index = ~0; /* warning be gone */
162 
163  from = vlib_frame_vector_args (frame);
164  n_left_from = frame->n_vectors; /* number of packets to process */
165  next_index = node->cached_next_index;
166 
167  while (n_left_from > 0)
168  {
169  u32 n_left_to_next;
170 
171  /* get space to enqueue frame to graph node "next_index" */
172  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
173 
174  while (n_left_from >= 8 && n_left_to_next >= 4)
175  {
176  u32 bi0, bi1, bi2, bi3;
177  vlib_buffer_t *b0, *b1, *b2, *b3;
178  u32 next0, next1, next2, next3;
179  u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
180  ethernet_header_t *h0, *h1, *h2, *h3;
181  l2_output_config_t *config0, *config1, *config2, *config3;
182  u32 feature_bitmap0, feature_bitmap1;
183  u32 feature_bitmap2, feature_bitmap3;
184 
185  /* Prefetch next iteration. */
186  {
187  vlib_buffer_t *p4, *p5, *p6, *p7;
188 
189  p4 = vlib_get_buffer (vm, from[4]);
190  p5 = vlib_get_buffer (vm, from[5]);
191  p6 = vlib_get_buffer (vm, from[6]);
192  p7 = vlib_get_buffer (vm, from[7]);
193 
194  /* Prefetch the buffer header for the N+2 loop iteration */
195  vlib_prefetch_buffer_header (p4, LOAD);
196  vlib_prefetch_buffer_header (p5, LOAD);
197  vlib_prefetch_buffer_header (p6, LOAD);
198  vlib_prefetch_buffer_header (p7, LOAD);
199  }
200 
201  /* speculatively enqueue b0 and b1 to the current next frame */
202  /* bi is "buffer index", b is pointer to the buffer */
203  to_next[0] = bi0 = from[0];
204  to_next[1] = bi1 = from[1];
205  to_next[2] = bi2 = from[2];
206  to_next[3] = bi3 = from[3];
207  from += 4;
208  to_next += 4;
209  n_left_from -= 4;
210  n_left_to_next -= 4;
211 
212  b0 = vlib_get_buffer (vm, bi0);
213  b1 = vlib_get_buffer (vm, bi1);
214  b2 = vlib_get_buffer (vm, bi2);
215  b3 = vlib_get_buffer (vm, bi3);
216 
217  /* TX interface handles */
218  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
219  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
220  sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_TX];
221  sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_TX];
222 
224  L2OUTPUT_ERROR_L2OUTPUT, 4);
225 
226  /* Get config for the output interface */
227  config0 = vec_elt_at_index (msm->configs, sw_if_index0);
228  config1 = vec_elt_at_index (msm->configs, sw_if_index1);
229  config2 = vec_elt_at_index (msm->configs, sw_if_index2);
230  config3 = vec_elt_at_index (msm->configs, sw_if_index3);
231 
232  /*
233  * Get features from the config
234  * TODO: mask out any non-applicable features
235  */
236  feature_bitmap0 = config0->feature_bitmap;
237  feature_bitmap1 = config1->feature_bitmap;
238  feature_bitmap2 = config2->feature_bitmap;
239  feature_bitmap3 = config3->feature_bitmap;
240 
241  /* Determine next node */
243  msm->vnet_main,
244  node,
245  l2output_node.index,
246  &cached_sw_if_index,
247  &cached_next_index,
248  &msm->next_nodes,
249  b0, sw_if_index0, feature_bitmap0, &next0);
250 
252  msm->vnet_main,
253  node,
254  l2output_node.index,
255  &cached_sw_if_index,
256  &cached_next_index,
257  &msm->next_nodes,
258  b1, sw_if_index1, feature_bitmap1, &next1);
259 
261  msm->vnet_main,
262  node,
263  l2output_node.index,
264  &cached_sw_if_index,
265  &cached_next_index,
266  &msm->next_nodes,
267  b2, sw_if_index2, feature_bitmap2, &next2);
268 
270  msm->vnet_main,
271  node,
272  l2output_node.index,
273  &cached_sw_if_index,
274  &cached_next_index,
275  &msm->next_nodes,
276  b3, sw_if_index3, feature_bitmap3, &next3);
277 
278  l2output_vtr (node, config0, feature_bitmap0, b0, &next0);
279  l2output_vtr (node, config1, feature_bitmap1, b1, &next1);
280  l2output_vtr (node, config2, feature_bitmap2, b2, &next2);
281  l2output_vtr (node, config3, feature_bitmap3, b3, &next3);
282 
283  if (do_trace)
284  {
285  h0 = vlib_buffer_get_current (b0);
286  h1 = vlib_buffer_get_current (b1);
287  h2 = vlib_buffer_get_current (b2);
288  h3 = vlib_buffer_get_current (b3);
289  if (b0->flags & VLIB_BUFFER_IS_TRACED)
290  {
291  l2output_trace_t *t =
292  vlib_add_trace (vm, node, b0, sizeof (*t));
293  t->sw_if_index = sw_if_index0;
294  clib_memcpy (t->src, h0->src_address, 6);
295  clib_memcpy (t->dst, h0->dst_address, 6);
296  clib_memcpy (t->raw, &h0->type, sizeof (t->raw));
297  }
298  if (b1->flags & VLIB_BUFFER_IS_TRACED)
299  {
300  l2output_trace_t *t =
301  vlib_add_trace (vm, node, b1, sizeof (*t));
302  t->sw_if_index = sw_if_index1;
303  clib_memcpy (t->src, h1->src_address, 6);
304  clib_memcpy (t->dst, h1->dst_address, 6);
305  clib_memcpy (t->raw, &h1->type, sizeof (t->raw));
306  }
307  if (b2->flags & VLIB_BUFFER_IS_TRACED)
308  {
309  l2output_trace_t *t =
310  vlib_add_trace (vm, node, b2, sizeof (*t));
311  t->sw_if_index = sw_if_index2;
312  clib_memcpy (t->src, h2->src_address, 6);
313  clib_memcpy (t->dst, h2->dst_address, 6);
314  clib_memcpy (t->raw, &h2->type, sizeof (t->raw));
315  }
316  if (b3->flags & VLIB_BUFFER_IS_TRACED)
317  {
318  l2output_trace_t *t =
319  vlib_add_trace (vm, node, b3, sizeof (*t));
320  t->sw_if_index = sw_if_index3;
321  clib_memcpy (t->src, h3->src_address, 6);
322  clib_memcpy (t->dst, h3->dst_address, 6);
323  clib_memcpy (t->raw, &h3->type, sizeof (t->raw));
324  }
325  }
326 
327  /*
328  * Perform the split horizon check
329  * The check can only fail for non-zero shg's
330  */
331  if (PREDICT_FALSE (config0->shg + config1->shg +
332  config2->shg + config3->shg))
333  {
334  /* one of the checks might fail, check both */
336  (config0->shg, vnet_buffer (b0)->l2.shg))
337  {
338  next0 = L2OUTPUT_NEXT_DROP;
339  b0->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
340  }
342  (config1->shg, vnet_buffer (b1)->l2.shg))
343  {
344  next1 = L2OUTPUT_NEXT_DROP;
345  b1->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
346  }
348  (config2->shg, vnet_buffer (b2)->l2.shg))
349  {
350  next2 = L2OUTPUT_NEXT_DROP;
351  b2->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
352  }
354  (config3->shg, vnet_buffer (b3)->l2.shg))
355  {
356  next3 = L2OUTPUT_NEXT_DROP;
357  b3->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
358  }
359  }
360 
361  /* verify speculative enqueues, maybe switch current next frame */
362  /* if next0==next1==next_index then nothing special needs to be done */
363  vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
364  to_next, n_left_to_next,
365  bi0, bi1, bi2, bi3,
366  next0, next1, next2, next3);
367  }
368 
369  while (n_left_from > 0 && n_left_to_next > 0)
370  {
371  u32 bi0;
372  vlib_buffer_t *b0;
373  u32 next0;
374  u32 sw_if_index0;
375  ethernet_header_t *h0;
376  l2_output_config_t *config0;
377  u32 feature_bitmap0;
378 
379  /* speculatively enqueue b0 to the current next frame */
380  bi0 = from[0];
381  to_next[0] = bi0;
382  from += 1;
383  to_next += 1;
384  n_left_from -= 1;
385  n_left_to_next -= 1;
386 
387  b0 = vlib_get_buffer (vm, bi0);
388 
389  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
390 
392  L2OUTPUT_ERROR_L2OUTPUT, 1);
393 
394  /* Get config for the output interface */
395  config0 = vec_elt_at_index (msm->configs, sw_if_index0);
396 
397  /*
398  * Get features from the config
399  * TODO: mask out any non-applicable features
400  */
401  feature_bitmap0 = config0->feature_bitmap;
402 
403  /* Determine next node */
405  msm->vnet_main,
406  node,
407  l2output_node.index,
408  &cached_sw_if_index,
409  &cached_next_index,
410  &msm->next_nodes,
411  b0, sw_if_index0, feature_bitmap0, &next0);
412 
413  l2output_vtr (node, config0, feature_bitmap0, b0, &next0);
414 
415  if (do_trace && PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
416  {
417  l2output_trace_t *t =
418  vlib_add_trace (vm, node, b0, sizeof (*t));
419  t->sw_if_index = sw_if_index0;
420  h0 = vlib_buffer_get_current (b0);
421  clib_memcpy (t->src, h0->src_address, 6);
422  clib_memcpy (t->dst, h0->dst_address, 6);
423  clib_memcpy (t->raw, &h0->type, sizeof (t->raw));
424  }
425 
426  /* Perform the split horizon check */
427  if (PREDICT_FALSE
429  (config0->shg, vnet_buffer (b0)->l2.shg)))
430  {
431  next0 = L2OUTPUT_NEXT_DROP;
432  b0->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
433  }
434 
435  /* verify speculative enqueue, maybe switch current next frame */
436  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
437  to_next, n_left_to_next,
438  bi0, next0);
439  }
440 
441  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
442  }
443 
444  return frame->n_vectors;
445 }
446 
447 static uword
449  vlib_node_runtime_t * node, vlib_frame_t * frame)
450 {
451  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
452  return l2output_node_inline (vm, node, frame, 1 /* do_trace */ );
453  return l2output_node_inline (vm, node, frame, 0 /* do_trace */ );
454 }
455 
456 /* *INDENT-OFF* */
458  .function = l2output_node_fn,
459  .name = "l2-output",
460  .vector_size = sizeof (u32),
461  .format_trace = format_l2output_trace,
462  .type = VLIB_NODE_TYPE_INTERNAL,
463 
464  .n_errors = ARRAY_LEN(l2output_error_strings),
465  .error_strings = l2output_error_strings,
466 
467  .n_next_nodes = L2OUTPUT_N_NEXT,
468 
469  /* edit / add dispositions here */
470  .next_nodes = {
471  [L2OUTPUT_NEXT_DROP] = "error-drop",
472  [L2OUTPUT_NEXT_BAD_INTF] = "l2-output-bad-intf",
473  },
474 };
475 /* *INDENT-ON* */
476 
477 
478 #define foreach_l2output_bad_intf_error \
479 _(DROP, "L2 output to interface not in L2 mode or deleted")
480 
482 #define _(sym,string) string,
484 #undef _
485 };
486 
487 typedef enum
488 {
489 #define _(sym,str) L2OUTPUT_BAD_INTF_ERROR_##sym,
491 #undef _
494 
495 
496 /**
497  * Output node for interfaces/tunnels which was in L2 mode but were changed
498  * to L3 mode or possibly deleted thereafter. On changing forwarding mode
499  * of any tunnel/interface from L2 to L3, its entry in l2_output_main table
500  * next_nodes.output_node_index_vec[sw_if_index] MUST be set to the value of
501  * L2OUTPUT_NEXT_BAD_INTF. Thus, if there are stale entries in the L2FIB for
502  * this sw_if_index, l2-output will send packets for this sw_if_index to the
503  * l2-output-bad-intf node which just setup the proper drop reason before
504  * sending packets to the error-drop node to drop the packet. Then, stale L2FIB
505  * entries for delted tunnels won't cause possible packet or memory corrpution.
506  */
508 
509 static uword
511  vlib_node_runtime_t * node, vlib_frame_t * frame)
512 {
513  u32 n_left_from, *from, *to_next;
514  l2output_next_t next_index = 0;
515 
516  from = vlib_frame_vector_args (frame);
517  n_left_from = frame->n_vectors; /* number of packets to process */
518 
519  while (n_left_from > 0)
520  {
521  u32 n_left_to_next;
522 
523  /* get space to enqueue frame to graph node "next_index" */
524  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
525 
526  while (n_left_from >= 4 && n_left_to_next >= 2)
527  {
528  u32 bi0, bi1;
529  vlib_buffer_t *b0, *b1;
530 
531  to_next[0] = bi0 = from[0];
532  to_next[1] = bi1 = from[1];
533  from += 2;
534  to_next += 2;
535  n_left_from -= 2;
536  n_left_to_next -= 2;
537  b0 = vlib_get_buffer (vm, bi0);
538  b1 = vlib_get_buffer (vm, bi1);
539  b0->error = node->errors[L2OUTPUT_BAD_INTF_ERROR_DROP];
540  b1->error = node->errors[L2OUTPUT_BAD_INTF_ERROR_DROP];
541  }
542 
543  while (n_left_from > 0 && n_left_to_next > 0)
544  {
545  u32 bi0;
546  vlib_buffer_t *b0;
547 
548  bi0 = from[0];
549  to_next[0] = bi0;
550  from += 1;
551  to_next += 1;
552  n_left_from -= 1;
553  n_left_to_next -= 1;
554  b0 = vlib_get_buffer (vm, bi0);
555  b0->error = node->errors[L2OUTPUT_BAD_INTF_ERROR_DROP];
556  }
557 
558  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
559  }
560 
561  return frame->n_vectors;
562 }
563 
564 /* *INDENT-OFF* */
566  .function = l2output_bad_intf_node_fn,
567  .name = "l2-output-bad-intf",
568  .vector_size = sizeof (u32),
569  .type = VLIB_NODE_TYPE_INTERNAL,
570 
572  .error_strings = l2output_bad_intf_error_strings,
573 
574  .n_next_nodes = 1,
575 
576  /* edit / add dispositions here */
577  .next_nodes = {
578  [0] = "error-drop",
579  },
580 };
581 /* *INDENT-ON* */
582 
583 
586 {
588 
589  mp->vlib_main = vm;
590  mp->vnet_main = vnet_get_main ();
591 
592  /* Create the config vector */
593  vec_validate (mp->configs, 100);
594  /* Until we hook up the CLI config, just create 100 sw interface entries and zero them */
595 
596  /* Initialize the feature next-node indexes */
598  l2output_node.index,
602 
603  /* Initialize the output node mapping table */
606 
607  return 0;
608 }
609 
611 
612 
613 /** Create a mapping in the next node mapping table for the given sw_if_index. */
614 void
616  vnet_main_t * vnet_main, u32 sw_if_index)
617 {
618  vnet_hw_interface_t *hw0 =
619  vnet_get_sup_hw_interface (vnet_main, sw_if_index);
620 
621  /* dynamically create graph node arc */
622  u32 next = vlib_node_add_next (vlib_main, l2output_node.index,
623  hw0->output_node_index);
624  l2output_main.next_nodes.output_node_index_vec[sw_if_index] = next;
625 }
626 
627 /* Get a pointer to the config for the given interface */
630 {
632 
633  vec_validate (mp->configs, sw_if_index);
634  return vec_elt_at_index (mp->configs, sw_if_index);
635 }
636 
637 /** Enable (or disable) the feature in the bitmap for the given interface. */
638 void
639 l2output_intf_bitmap_enable (u32 sw_if_index, u32 feature_bitmap, u32 enable)
640 {
642  l2_output_config_t *config;
643 
644  vec_validate (mp->configs, sw_if_index);
645  config = vec_elt_at_index (mp->configs, sw_if_index);
646 
647  if (enable)
648  {
649  config->feature_bitmap |= feature_bitmap;
650  }
651  else
652  {
653  config->feature_bitmap &= ~feature_bitmap;
654  }
655 }
656 
657 /*
658  * fd.io coding-style-patch-verification: ON
659  *
660  * Local Variables:
661  * eval: (c-set-style "gnu")
662  * End:
663  */
l2output_bad_intf_error_t
Definition: l2_output.c:487
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:436
#define foreach_l2output_error
Definition: l2_output.h:127
#define CLIB_UNUSED(x)
Definition: clib.h:79
char ** l2output_get_feat_names(void)
Definition: l2_output.c:38
clib_error_t * l2output_init(vlib_main_t *vm)
Definition: l2_output.c:585
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
l2output_next_t
Definition: l2_output.h:135
#define PREDICT_TRUE(x)
Definition: clib.h:98
static uword l2output_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: l2_output.c:448
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
u8 src_address[6]
Definition: packet.h:54
#define vlib_validate_buffer_enqueue_x4(vm, node, next_index, to_next, n_left_to_next, bi0, bi1, bi2, bi3, next0, next1, next2, next3)
Finish enqueueing four buffers forward in the graph.
Definition: buffer_node.h:138
struct _vlib_node_registration vlib_node_registration_t
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
static u32 l2_pbb_process(vlib_buffer_t *b0, ptr_config_t *config)
Definition: l2_vtr.h:199
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:419
l2_output_next_nodes_st next_nodes
Definition: l2_output.h:81
static uword vlib_node_add_next(vlib_main_t *vm, uword node, uword next_node)
Definition: node_funcs.h:1081
u16 push_and_pop_bytes
Definition: l2_vtr.h:64
void l2output_create_output_node_mapping(vlib_main_t *vlib_main, vnet_main_t *vnet_main, u32 sw_if_index)
Create a mapping in the next node mapping table for the given sw_if_index.
Definition: l2_output.c:615
static_always_inline u32 split_horizon_violation(u8 shg1, u8 shg2)
Check for split horizon violations.
Definition: l2_output.c:89
u16 push_and_pop_bytes
Definition: l2_vtr.h:194
#define static_always_inline
Definition: clib.h:85
u8 * format_ethernet_address(u8 *s, va_list *args)
Definition: format.c:44
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
ptr_config_t output_pbb_vtr
Definition: l2_output.h:41
u8 dst_address[6]
Definition: packet.h:53
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:164
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
void l2output_intf_bitmap_enable(u32 sw_if_index, u32 feature_bitmap, u32 enable)
Enable (or disable) the feature in the bitmap for the given interface.
Definition: l2_output.c:639
static_always_inline uword l2output_node_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int do_trace)
Definition: l2_output.c:150
static u32 l2_vtr_process(vlib_buffer_t *b0, vtr_config_t *config)
Perform the configured tag rewrite on the packet.
Definition: l2_vtr.h:75
u32 feat_next_node_index[32]
Definition: l2_output.h:73
l2_output_config_t * l2output_intf_config(u32 sw_if_index)
Get a pointer to the config for the given interface.
Definition: l2_output.c:629
static uword l2output_bad_intf_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: l2_output.c:510
vtr_config_t input_vtr
Definition: l2_output.h:38
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:188
#define PREDICT_FALSE(x)
Definition: clib.h:97
vnet_main_t vnet_main
Definition: misc.c:43
#define foreach_l2output_bad_intf_error
Definition: l2_output.c:478
l2output_main_t l2output_main
Definition: l2_output.c:43
#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:366
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:113
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1131
vlib_main_t * vlib_main
Definition: l2_output.h:87
u16 n_vectors
Definition: node.h:345
static void feat_bitmap_init_next_nodes(vlib_main_t *vm, u32 node_index, u32 num_features, char **feat_names, u32 *next_nodes)
Initialize the feature next-node indexes of a graph node.
Definition: feat_bitmap.h:43
static u8 l2_efp_filter_process(vlib_buffer_t *b0, vtr_config_t *in_config)
Definition: l2_vtr.h:139
#define VLIB_BUFFER_IS_TRACED
Definition: buffer.h:85
#define clib_memcpy(a, b, c)
Definition: string.h:69
static char * l2output_feat_names[]
Definition: l2_output.c:31
#define ARRAY_LEN(x)
Definition: clib.h:59
vtr_config_t output_vtr
Definition: l2_output.h:39
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:460
int vlib_main(vlib_main_t *volatile vm, unformat_input_t *input)
Definition: main.c:1692
unsigned int u32
Definition: types.h:88
static_always_inline void l2output_vtr(vlib_node_runtime_t *node, l2_output_config_t *config, u32 feature_bitmap, vlib_buffer_t *b, u32 *next)
Definition: l2_output.c:102
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:260
static char * l2output_error_strings[]
Definition: l2_output.c:75
static vlib_node_registration_t l2output_bad_intf_node
Output node for interfaces/tunnels which was in L2 mode but were changed to L3 mode or possibly delet...
Definition: l2_output.c:507
u64 uword
Definition: types.h:112
static void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
Definition: trace_funcs.h:55
Definition: defs.h:47
static char * l2output_bad_intf_error_strings[]
Definition: l2_output.c:481
unsigned char u8
Definition: types.h:56
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:269
l2_output_config_t * configs
Definition: l2_output.h:84
static vlib_node_registration_t l2output_node
(constructor) VLIB_REGISTER_NODE (l2output_node)
Definition: l2_output.c:147
#define vnet_buffer(b)
Definition: buffer.h:304
#define VLIB_NODE_FUNCTION_MULTIARCH(node, fn)
Definition: node.h:159
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:144
u16 flags
Copy of main node flags.
Definition: node.h:454
static u8 * format_l2output_trace(u8 *s, va_list *args)
Definition: l2_output.c:56
static void l2_output_dispatch(vlib_main_t *vlib_main, vnet_main_t *vnet_main, vlib_node_runtime_t *node, u32 node_index, u32 *cached_sw_if_index, u32 *cached_next_index, l2_output_next_nodes_st *next_nodes, vlib_buffer_t *b0, u32 sw_if_index, u32 feature_bitmap, u32 *next0)
Determine the next L2 node based on the output feature bitmap.
Definition: l2_output.h:168
#define vec_validate_init_empty(V, I, INIT)
Make sure vector is long enough for given index and initialize empty space (no header, unspecified alignment)
Definition: vec.h:485
u32 flags
buffer flags: VLIB_BUFFER_IS_TRACED: trace this buffer.
Definition: buffer.h:74
vnet_main_t * vnet_main
Definition: l2_output.h:88
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