FD.io VPP  v17.01.1-3-gc6833f8
Vector Packet Processing
l2_output.c
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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];
52 
53 /* packet trace format function */
54 static u8 *
55 format_l2output_trace (u8 * s, va_list * args)
56 {
57  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
58  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
59  l2output_trace_t *t = va_arg (*args, l2output_trace_t *);
60 
61  s = format (s, "l2-output: sw_if_index %d dst %U src %U",
62  t->sw_if_index,
65  return s;
66 }
67 
68 
69 static char *l2output_error_strings[] = {
70 #define _(sym,string) string,
72 #undef _
73 };
74 
75 /**
76  * Check for split horizon violations.
77  * Return 0 if split horizon check passes, otherwise return non-zero.
78  * Packets should not be transmitted out an interface with the same
79  * split-horizon group as the input interface, except if the @c shg is 0
80  * in which case the check always passes.
81  */
84 {
85  if (PREDICT_TRUE (shg1 == 0))
86  {
87  return 0;
88  }
89  else
90  {
91  return shg1 == shg2;
92  }
93 }
94 
97  u32 feature_bitmap, vlib_buffer_t * b, u32 * next)
98 {
99  if (PREDICT_FALSE (config->out_vtr_flag))
100  {
101  /* Perform pre-vtr EFP filter check if configured */
102  if (config->output_vtr.push_and_pop_bytes)
103  {
104  /*
105  * Perform output vlan tag rewrite and the pre-vtr EFP filter check.
106  * The EFP Filter only needs to be run if there is an output VTR
107  * configured. The flag for the post-vtr EFP Filter node is used
108  * to trigger the pre-vtr check as well.
109  */
110  u32 failed1 = (feature_bitmap & L2OUTPUT_FEAT_EFP_FILTER)
111  && (l2_efp_filter_process (b, &(config->input_vtr)));
112  u32 failed2 = l2_vtr_process (b, &(config->output_vtr));
113 
114  if (PREDICT_FALSE (failed1 | failed2))
115  {
116  *next = L2OUTPUT_NEXT_DROP;
117  if (failed2)
118  {
119  b->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
120  }
121  if (failed1)
122  {
123  b->error = node->errors[L2OUTPUT_ERROR_EFP_DROP];
124  }
125  }
126  }
127  // perform the PBB rewrite
128  else if (config->output_pbb_vtr.push_and_pop_bytes)
129  {
130  u32 failed = l2_pbb_process (b, &(config->output_pbb_vtr));
131  if (PREDICT_FALSE (failed))
132  {
133  *next = L2OUTPUT_NEXT_DROP;
134  b->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
135  }
136  }
137  }
138 }
139 
140 
142 
143 static uword
145  vlib_node_runtime_t * node, vlib_frame_t * frame)
146 {
147  u32 n_left_from, *from, *to_next;
148  l2output_next_t next_index;
150  u32 cached_sw_if_index;
151  u32 cached_next_index;
152 
153  /* Invalidate cache */
154  cached_sw_if_index = ~0;
155  cached_next_index = ~0; /* warning be gone */
156 
157  from = vlib_frame_vector_args (frame);
158  n_left_from = frame->n_vectors; /* number of packets to process */
159  next_index = node->cached_next_index;
160 
161  while (n_left_from > 0)
162  {
163  u32 n_left_to_next;
164 
165  /* get space to enqueue frame to graph node "next_index" */
166  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
167 
168  while (n_left_from >= 8 && n_left_to_next >= 4)
169  {
170  u32 bi0, bi1, bi2, bi3;
171  vlib_buffer_t *b0, *b1, *b2, *b3;
172  u32 next0, next1, next2, next3;
173  u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
174  ethernet_header_t *h0, *h1, *h2, *h3;
175  l2_output_config_t *config0, *config1, *config2, *config3;
176  u32 feature_bitmap0, feature_bitmap1;
177  u32 feature_bitmap2, feature_bitmap3;
178 
179  /* Prefetch next iteration. */
180  {
181  vlib_buffer_t *p4, *p5, *p6, *p7;
182 
183  p4 = vlib_get_buffer (vm, from[4]);
184  p5 = vlib_get_buffer (vm, from[5]);
185  p6 = vlib_get_buffer (vm, from[6]);
186  p7 = vlib_get_buffer (vm, from[7]);
187 
188  /* Prefetch the buffer header for the N+2 loop iteration */
189  vlib_prefetch_buffer_header (p4, LOAD);
190  vlib_prefetch_buffer_header (p5, LOAD);
191  vlib_prefetch_buffer_header (p6, LOAD);
192  vlib_prefetch_buffer_header (p7, LOAD);
193  }
194 
195  /* speculatively enqueue b0 and b1 to the current next frame */
196  /* bi is "buffer index", b is pointer to the buffer */
197  to_next[0] = bi0 = from[0];
198  to_next[1] = bi1 = from[1];
199  to_next[2] = bi2 = from[2];
200  to_next[3] = bi3 = from[3];
201  from += 4;
202  to_next += 4;
203  n_left_from -= 4;
204  n_left_to_next -= 4;
205 
206  b0 = vlib_get_buffer (vm, bi0);
207  b1 = vlib_get_buffer (vm, bi1);
208  b2 = vlib_get_buffer (vm, bi2);
209  b3 = vlib_get_buffer (vm, bi3);
210 
211  /* TX interface handles */
212  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
213  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
214  sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_TX];
215  sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_TX];
216 
217  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
218  {
219  h0 = vlib_buffer_get_current (b0);
220  h1 = vlib_buffer_get_current (b1);
221  h2 = vlib_buffer_get_current (b2);
222  h3 = vlib_buffer_get_current (b3);
223  if (b0->flags & VLIB_BUFFER_IS_TRACED)
224  {
225  l2output_trace_t *t =
226  vlib_add_trace (vm, node, b0, sizeof (*t));
227  t->sw_if_index = sw_if_index0;
228  clib_memcpy (t->src, h0->src_address, 6);
229  clib_memcpy (t->dst, h0->dst_address, 6);
230  }
231  if (b1->flags & VLIB_BUFFER_IS_TRACED)
232  {
233  l2output_trace_t *t =
234  vlib_add_trace (vm, node, b1, sizeof (*t));
235  t->sw_if_index = sw_if_index1;
236  clib_memcpy (t->src, h1->src_address, 6);
237  clib_memcpy (t->dst, h1->dst_address, 6);
238  }
239  if (b2->flags & VLIB_BUFFER_IS_TRACED)
240  {
241  l2output_trace_t *t =
242  vlib_add_trace (vm, node, b2, sizeof (*t));
243  t->sw_if_index = sw_if_index2;
244  clib_memcpy (t->src, h2->src_address, 6);
245  clib_memcpy (t->dst, h2->dst_address, 6);
246  }
247  if (b3->flags & VLIB_BUFFER_IS_TRACED)
248  {
249  l2output_trace_t *t =
250  vlib_add_trace (vm, node, b3, sizeof (*t));
251  t->sw_if_index = sw_if_index3;
252  clib_memcpy (t->src, h3->src_address, 6);
253  clib_memcpy (t->dst, h3->dst_address, 6);
254  }
255  }
256 
258  L2OUTPUT_ERROR_L2OUTPUT, 4);
259 
260  /* Get config for the output interface */
261  config0 = vec_elt_at_index (msm->configs, sw_if_index0);
262  config1 = vec_elt_at_index (msm->configs, sw_if_index1);
263  config2 = vec_elt_at_index (msm->configs, sw_if_index2);
264  config3 = vec_elt_at_index (msm->configs, sw_if_index3);
265 
266  /*
267  * Get features from the config
268  * TODO: mask out any non-applicable features
269  */
270  feature_bitmap0 = config0->feature_bitmap;
271  feature_bitmap1 = config1->feature_bitmap;
272  feature_bitmap2 = config2->feature_bitmap;
273  feature_bitmap3 = config3->feature_bitmap;
274 
275  /* Determine next node */
277  msm->vnet_main,
278  node,
279  l2output_node.index,
280  &cached_sw_if_index,
281  &cached_next_index,
282  &msm->next_nodes,
283  b0, sw_if_index0, feature_bitmap0, &next0);
284 
286  msm->vnet_main,
287  node,
288  l2output_node.index,
289  &cached_sw_if_index,
290  &cached_next_index,
291  &msm->next_nodes,
292  b1, sw_if_index1, feature_bitmap1, &next1);
293 
295  msm->vnet_main,
296  node,
297  l2output_node.index,
298  &cached_sw_if_index,
299  &cached_next_index,
300  &msm->next_nodes,
301  b2, sw_if_index2, feature_bitmap2, &next2);
302 
304  msm->vnet_main,
305  node,
306  l2output_node.index,
307  &cached_sw_if_index,
308  &cached_next_index,
309  &msm->next_nodes,
310  b3, sw_if_index3, feature_bitmap3, &next3);
311 
312  l2output_vtr (node, config0, feature_bitmap0, b0, &next0);
313  l2output_vtr (node, config1, feature_bitmap1, b1, &next1);
314  l2output_vtr (node, config2, feature_bitmap2, b2, &next2);
315  l2output_vtr (node, config3, feature_bitmap3, b3, &next3);
316 
317  /*
318  * Perform the split horizon check
319  * The check can only fail for non-zero shg's
320  */
321  if (PREDICT_FALSE (config0->shg + config1->shg +
322  config2->shg + config3->shg))
323  {
324  /* one of the checks might fail, check both */
326  (config0->shg, vnet_buffer (b0)->l2.shg))
327  {
328  next0 = L2OUTPUT_NEXT_DROP;
329  b0->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
330  }
332  (config1->shg, vnet_buffer (b1)->l2.shg))
333  {
334  next1 = L2OUTPUT_NEXT_DROP;
335  b1->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
336  }
338  (config2->shg, vnet_buffer (b2)->l2.shg))
339  {
340  next2 = L2OUTPUT_NEXT_DROP;
341  b2->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
342  }
344  (config3->shg, vnet_buffer (b3)->l2.shg))
345  {
346  next3 = L2OUTPUT_NEXT_DROP;
347  b3->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
348  }
349  }
350 
351  /* verify speculative enqueues, maybe switch current next frame */
352  /* if next0==next1==next_index then nothing special needs to be done */
353  vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
354  to_next, n_left_to_next,
355  bi0, bi1, bi2, bi3,
356  next0, next1, next2, next3);
357  }
358 
359  while (n_left_from > 0 && n_left_to_next > 0)
360  {
361  u32 bi0;
362  vlib_buffer_t *b0;
363  u32 next0;
364  u32 sw_if_index0;
365  ethernet_header_t *h0;
366  l2_output_config_t *config0;
367  u32 feature_bitmap0;
368 
369  /* speculatively enqueue b0 to the current next frame */
370  bi0 = from[0];
371  to_next[0] = bi0;
372  from += 1;
373  to_next += 1;
374  n_left_from -= 1;
375  n_left_to_next -= 1;
376 
377  b0 = vlib_get_buffer (vm, bi0);
378 
379  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
380 
382  && (b0->flags & VLIB_BUFFER_IS_TRACED)))
383  {
384  l2output_trace_t *t =
385  vlib_add_trace (vm, node, b0, sizeof (*t));
386  t->sw_if_index = sw_if_index0;
387  h0 = vlib_buffer_get_current (b0);
388  clib_memcpy (t->src, h0->src_address, 6);
389  clib_memcpy (t->dst, h0->dst_address, 6);
390  }
391 
393  L2OUTPUT_ERROR_L2OUTPUT, 1);
394 
395  /* Get config for the output interface */
396  config0 = vec_elt_at_index (msm->configs, sw_if_index0);
397 
398  /*
399  * Get features from the config
400  * TODO: mask out any non-applicable features
401  */
402  feature_bitmap0 = config0->feature_bitmap;
403 
404  /* Determine next node */
406  msm->vnet_main,
407  node,
408  l2output_node.index,
409  &cached_sw_if_index,
410  &cached_next_index,
411  &msm->next_nodes,
412  b0, sw_if_index0, feature_bitmap0, &next0);
413 
414  l2output_vtr (node, config0, feature_bitmap0, b0, &next0);
415 
416  /* Perform the split horizon check */
417  if (PREDICT_FALSE
419  (config0->shg, vnet_buffer (b0)->l2.shg)))
420  {
421  next0 = L2OUTPUT_NEXT_DROP;
422  b0->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
423  }
424 
425  /* verify speculative enqueue, maybe switch current next frame */
426  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
427  to_next, n_left_to_next,
428  bi0, next0);
429  }
430 
431  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
432  }
433 
434  return frame->n_vectors;
435 }
436 
437 
438 /* *INDENT-OFF* */
440  .function = l2output_node_fn,
441  .name = "l2-output",
442  .vector_size = sizeof (u32),
443  .format_trace = format_l2output_trace,
445 
446  .n_errors = ARRAY_LEN(l2output_error_strings),
447  .error_strings = l2output_error_strings,
448 
449  .n_next_nodes = L2OUTPUT_N_NEXT,
450 
451  /* edit / add dispositions here */
452  .next_nodes = {
453  [L2OUTPUT_NEXT_DROP] = "error-drop",
454  [L2OUTPUT_NEXT_BAD_INTF] = "l2-output-bad-intf",
455  },
456 };
457 /* *INDENT-ON* */
458 
459 
460 #define foreach_l2output_bad_intf_error \
461 _(DROP, "L2 output to interface not in L2 mode or deleted")
462 
464 #define _(sym,string) string,
466 #undef _
467 };
468 
469 typedef enum
470 {
471 #define _(sym,str) L2OUTPUT_BAD_INTF_ERROR_##sym,
473 #undef _
476 
477 
478 /**
479  * Output node for interfaces/tunnels which was in L2 mode but were changed
480  * to L3 mode or possibly deleted thereafter. On changing forwarding mode
481  * of any tunnel/interface from L2 to L3, its entry in l2_output_main table
482  * next_nodes.output_node_index_vec[sw_if_index] MUST be set to the value of
483  * L2OUTPUT_NEXT_BAD_INTF. Thus, if there are stale entries in the L2FIB for
484  * this sw_if_index, l2-output will send packets for this sw_if_index to the
485  * l2-output-bad-intf node which just setup the proper drop reason before
486  * sending packets to the error-drop node to drop the packet. Then, stale L2FIB
487  * entries for delted tunnels won't cause possible packet or memory corrpution.
488  */
490 
491 static uword
493  vlib_node_runtime_t * node, vlib_frame_t * frame)
494 {
495  u32 n_left_from, *from, *to_next;
496  l2output_next_t next_index = 0;
497 
498  from = vlib_frame_vector_args (frame);
499  n_left_from = frame->n_vectors; /* number of packets to process */
500 
501  while (n_left_from > 0)
502  {
503  u32 n_left_to_next;
504 
505  /* get space to enqueue frame to graph node "next_index" */
506  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
507 
508  while (n_left_from >= 4 && n_left_to_next >= 2)
509  {
510  u32 bi0, bi1;
511  vlib_buffer_t *b0, *b1;
512 
513  to_next[0] = bi0 = from[0];
514  to_next[1] = bi1 = from[1];
515  from += 2;
516  to_next += 2;
517  n_left_from -= 2;
518  n_left_to_next -= 2;
519  b0 = vlib_get_buffer (vm, bi0);
520  b1 = vlib_get_buffer (vm, bi1);
521  b0->error = node->errors[L2OUTPUT_BAD_INTF_ERROR_DROP];
522  b1->error = node->errors[L2OUTPUT_BAD_INTF_ERROR_DROP];
523  }
524 
525  while (n_left_from > 0 && n_left_to_next > 0)
526  {
527  u32 bi0;
528  vlib_buffer_t *b0;
529 
530  bi0 = from[0];
531  to_next[0] = bi0;
532  from += 1;
533  to_next += 1;
534  n_left_from -= 1;
535  n_left_to_next -= 1;
536  b0 = vlib_get_buffer (vm, bi0);
537  b0->error = node->errors[L2OUTPUT_BAD_INTF_ERROR_DROP];
538  }
539 
540  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
541  }
542 
543  return frame->n_vectors;
544 }
545 
546 /* *INDENT-OFF* */
548  .function = l2output_bad_intf_node_fn,
549  .name = "l2-output-bad-intf",
550  .vector_size = sizeof (u32),
552 
554  .error_strings = l2output_bad_intf_error_strings,
555 
556  .n_next_nodes = 1,
557 
558  /* edit / add dispositions here */
559  .next_nodes = {
560  [0] = "error-drop",
561  },
562 };
563 /* *INDENT-ON* */
564 
565 
568 {
570 
571  mp->vlib_main = vm;
572  mp->vnet_main = vnet_get_main ();
573 
574  /* Create the config vector */
575  vec_validate (mp->configs, 100);
576  /* Until we hook up the CLI config, just create 100 sw interface entries and zero them */
577 
578  /* Initialize the feature next-node indexes */
580  l2output_node.index,
584 
585  /* Initialize the output node mapping table */
587 
588  return 0;
589 }
590 
592 
593 typedef struct
594 {
598 
600 
601 static void
602 output_node_mapping_send_rpc (u32 node_index, u32 sw_if_index)
603 {
605  void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
606 
607  args.node_index = node_index;
608  args.sw_if_index = sw_if_index;
609 
611  (u8 *) & args, sizeof (args));
612 }
613 
614 
615 /** Create a mapping in the next node mapping table for the given sw_if_index. */
616 u32
618  u32 * output_node_index_vec,
619  u32 sw_if_index)
620 {
621 
622  u32 next; /* index of next graph node */
623  vnet_hw_interface_t *hw0;
624  u32 *node;
625 
626  hw0 = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
627 
628  uword cpu_number;
629 
630  cpu_number = os_get_cpu_number ();
631 
632  if (cpu_number)
633  {
634  u32 oldflags;
635 
636  oldflags = __sync_fetch_and_or (&hw0->flags,
638 
640  return L2OUTPUT_NEXT_DROP;
641 
642  output_node_mapping_send_rpc (node_index, sw_if_index);
643  return L2OUTPUT_NEXT_DROP;
644  }
645 
646  /* dynamically create graph node arc */
647  next = vlib_node_add_next (vlib_main, node_index, hw0->output_node_index);
648 
649  /* Initialize vector with the mapping */
650 
651  node = vec_elt_at_index (output_node_index_vec, sw_if_index);
652  *node = next;
653 
654  /* reset mapping bit, includes memory barrier */
655  __sync_fetch_and_and (&hw0->flags, ~VNET_HW_INTERFACE_FLAG_L2OUTPUT_MAPPED);
656 
657  return next;
658 }
659 
660 void
662 {
663  vlib_main_t *vm = vlib_get_main ();
664  vnet_main_t *vnm = vnet_get_main ();
666 
668  (vm, vnm, a->node_index, mp->next_nodes.output_node_index_vec,
669  a->sw_if_index);
670 }
671 
672 /* Get a pointer to the config for the given interface */
675 {
677 
678  vec_validate (mp->configs, sw_if_index);
679  return vec_elt_at_index (mp->configs, sw_if_index);
680 }
681 
682 /** Enable (or disable) the feature in the bitmap for the given interface. */
683 void
684 l2output_intf_bitmap_enable (u32 sw_if_index, u32 feature_bitmap, u32 enable)
685 {
687  l2_output_config_t *config;
688 
689  vec_validate (mp->configs, sw_if_index);
690  config = vec_elt_at_index (mp->configs, sw_if_index);
691 
692  if (enable)
693  {
694  config->feature_bitmap |= feature_bitmap;
695  }
696  else
697  {
698  config->feature_bitmap &= ~feature_bitmap;
699  }
700 }
701 
702 /*
703  * fd.io coding-style-patch-verification: ON
704  *
705  * Local Variables:
706  * eval: (c-set-style "gnu")
707  * End:
708  */
l2output_bad_intf_error_t
Definition: l2_output.c:469
#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
#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:567
a
Definition: bitmap.h:516
static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:23
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)
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:144
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
static u32 l2_pbb_process(vlib_buffer_t *b0, ptr_config_t *config)
Definition: l2_vtr.h:199
vlib_error_t * errors
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:1063
u32 l2output_create_output_node_mapping(vlib_main_t *vlib_main, vnet_main_t *vnet_main, u32 node_index, u32 *output_node_index_vec, u32 sw_if_index)
Create a mapping in the next node mapping table for the given sw_if_index.
Definition: l2_output.c:617
u16 push_and_pop_bytes
Definition: l2_vtr.h:64
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
static_always_inline u32 split_horizon_violation(u8 shg1, u8 shg2)
Check for split horizon violations.
Definition: l2_output.c:83
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
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:194
ptr_config_t output_pbb_vtr
Definition: l2_output.h:41
u8 dst_address[6]
Definition: packet.h:53
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
static void output_node_mapping_send_rpc(u32 node_index, u32 sw_if_index)
Definition: l2_output.c:602
void vl_api_rpc_call_main_thread(void *fp, u8 *data, u32 data_length)
Definition: memory_vlib.c:1268
int vlib_main(vlib_main_t *volatile vm, unformat_input_t *input)
Definition: main.c:1599
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:684
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:674
static uword l2output_bad_intf_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: l2_output.c:492
vtr_config_t input_vtr
Definition: l2_output.h:38
#define VNET_HW_INTERFACE_FLAG_L2OUTPUT_MAPPED
Definition: interface.h:404
uword os_get_cpu_number(void)
Definition: unix-misc.c:224
#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:460
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:350
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:121
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1113
vlib_main_t * vlib_main
Definition: l2_output.h:87
u16 n_vectors
Definition: node.h:344
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 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
Definition: node.h:463
unsigned int u32
Definition: types.h:88
#define vnet_buffer(b)
Definition: buffer.h:361
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:96
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:259
static char * l2output_error_strings[]
Definition: l2_output.c:69
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:489
#define VLIB_BUFFER_IS_TRACED
Definition: buffer.h:95
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:463
static void output_node_rpc_callback(output_node_mapping_rpc_args_t *a)
Definition: l2_output.c:661
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:253
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:141
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:170
#define VLIB_NODE_FUNCTION_MULTIARCH(node, fn)
Definition: node.h:158
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:143
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:418
static u8 * format_l2output_trace(u8 *s, va_list *args)
Definition: l2_output.c:55
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:211
u32 flags
buffer flags: VLIB_BUFFER_IS_TRACED: trace this buffer.
Definition: buffer.h:85
static void l2output_init_output_node_vec(u32 **output_node_index_vec)
Definition: l2_output.h:168
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