FD.io VPP  v19.08.2-294-g37e99c22d
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 #include <vlib/vlib.h>
16 #include <vnet/vnet.h>
17 #include <vppinfra/error.h>
18 #include <srv6-ad/ad.h>
19 
20 
21 /******************************* Packet tracing *******************************/
22 
23 typedef struct
24 {
27 
28 typedef struct
29 {
33 
34 static u8 *
35 format_srv6_ad_localsid_trace (u8 * s, va_list * args)
36 {
37  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
38  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
40 
41  return format (s, "SRv6-AD-localsid: localsid_index %d", t->localsid_index);
42 }
43 
44 static u8 *
45 format_srv6_ad_rewrite_trace (u8 * s, va_list * args)
46 {
47  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
48  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
49  srv6_ad_rewrite_trace_t *t = va_arg (*args, srv6_ad_rewrite_trace_t *);
50 
51  if (PREDICT_FALSE (t->error != 0))
52  {
53  return format (s, "SRv6-AD-rewrite: cache is empty");
54  }
55 
56  return format (s, "SRv6-AD-rewrite: src %U dst %U",
58 }
59 
60 
61 /***************************** Nodes registration *****************************/
62 
65 
66 
67 /****************************** Packet counters *******************************/
68 
69 #define foreach_srv6_ad_rewrite_counter \
70 _(PROCESSED, "srv6-ad rewritten packets") \
71 _(NO_RW, "(Error) No header for rewriting.")
72 
73 typedef enum
74 {
75 #define _(sym,str) SRV6_AD_REWRITE_COUNTER_##sym,
77 #undef _
80 
82 #define _(sym,string) string,
84 #undef _
85 };
86 
87 
88 /********************************* Next nodes *********************************/
89 
90 typedef enum
91 {
98 
99 typedef enum
100 {
105 
106 
107 /******************************* Local SID node *******************************/
108 
109 /**
110  * @brief Function doing SRH processing for AD behavior
111  */
114  ip6_header_t * ip0,
115  ip6_sr_header_t * sr0,
116  ip6_sr_localsid_t * ls0, u32 * next0)
117 {
118  ip6_address_t *new_dst0;
119  u16 total_size;
120  ip6_ext_header_t *next_ext_header;
121  u8 next_hdr;
122  srv6_ad_localsid_t *ls0_mem;
123 
124  if (PREDICT_FALSE (ip0->protocol != IP_PROTOCOL_IPV6_ROUTE ||
125  sr0->type != ROUTING_HEADER_TYPE_SR))
126  {
127  return;
128  }
129 
130  if (PREDICT_FALSE (sr0->segments_left == 0))
131  {
132  return;
133  }
134 
135  /* Decrement Segments Left and update Destination Address */
136  sr0->segments_left -= 1;
137  new_dst0 = (ip6_address_t *) (sr0->segments) + sr0->segments_left;
138  ip0->dst_address.as_u64[0] = new_dst0->as_u64[0];
139  ip0->dst_address.as_u64[1] = new_dst0->as_u64[1];
140 
141  /* Compute the total size of the IPv6 header and extensions */
142  total_size = sizeof (ip6_header_t);
143  next_ext_header = (ip6_ext_header_t *) (ip0 + 1);
144  next_hdr = ip0->protocol;
145 
146  while (ip6_ext_hdr (next_hdr))
147  {
148  total_size += ip6_ext_header_len (next_ext_header);
149  next_hdr = next_ext_header->next_hdr;
150  next_ext_header = ip6_ext_next_header (next_ext_header);
151  }
152 
153  /* Make sure next header is valid */
154  if (PREDICT_FALSE (next_hdr != IP_PROTOCOL_IPV6 &&
155  next_hdr != IP_PROTOCOL_IP_IN_IP &&
156  next_hdr != IP_PROTOCOL_IP6_NONXT))
157  {
158  return;
159  }
160 
161  /* Retrieve SID memory */
162  ls0_mem = ls0->plugin_mem;
163 
164  /* Cache IP header and extensions */
165  if (PREDICT_FALSE (total_size > ls0_mem->rw_len))
166  {
167  vec_validate (ls0_mem->rewrite, total_size - 1);
168  }
169  clib_memcpy_fast (ls0_mem->rewrite, ip0, total_size);
170  ls0_mem->rw_len = total_size;
171 
172  /* Remove IP header and extensions */
173  vlib_buffer_advance (b0, total_size);
174 
175  if (next_hdr == IP_PROTOCOL_IP6_NONXT)
176  {
177  /* Set output interface */
178  vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0_mem->sw_if_index_out;
179 
180  /* Set next node to interface-output */
182  }
183  else
184  {
185  /* Set Xconnect adjacency to VNF */
186  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0_mem->nh_adj;
187 
188  /* Set next node to ip-rewrite */
189  *next0 = (next_hdr == IP_PROTOCOL_IPV6) ?
191  }
192 }
193 
194 /**
195  * @brief SRv6 AD Localsid graph node
196  */
197 static uword
199  vlib_node_runtime_t * node, vlib_frame_t * frame)
200 {
201  ip6_sr_main_t *sm = &sr_main;
202  u32 n_left_from, next_index, *from, *to_next;
203  u32 cnt_packets = 0;
204 
205  from = vlib_frame_vector_args (frame);
206  n_left_from = frame->n_vectors;
207  next_index = node->cached_next_index;
208 
209  while (n_left_from > 0)
210  {
211  u32 n_left_to_next;
212 
213  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
214 
215  /* TODO: Dual/quad loop */
216 
217  while (n_left_from > 0 && n_left_to_next > 0)
218  {
219  u32 bi0;
220  vlib_buffer_t *b0;
221  ip6_header_t *ip0 = 0;
222  ip6_sr_header_t *sr0;
223  ip6_sr_localsid_t *ls0;
225 
226  bi0 = from[0];
227  to_next[0] = bi0;
228  from += 1;
229  to_next += 1;
230  n_left_from -= 1;
231  n_left_to_next -= 1;
232 
233  b0 = vlib_get_buffer (vm, bi0);
234  ip0 = vlib_buffer_get_current (b0);
235  sr0 = (ip6_sr_header_t *) (ip0 + 1);
236 
237  /* Lookup the SR End behavior based on IP DA (adj) */
238  ls0 = pool_elt_at_index (sm->localsids,
239  vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
240 
241  /* SRH processing */
242  end_ad_processing (b0, ip0, sr0, ls0, &next0);
243 
244  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
245  {
247  vlib_add_trace (vm, node, b0, sizeof *tr);
248  tr->localsid_index = ls0 - sm->localsids;
249  }
250 
251  /* This increments the SRv6 per LocalSID counters. */
254  &(sm->sr_ls_invalid_counters) :
255  &(sm->sr_ls_valid_counters)),
256  vm->thread_index,
257  ls0 - sm->localsids, 1,
259  b0));
260 
261  vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
262  n_left_to_next, bi0, next0);
263 
264  cnt_packets++;
265  }
266 
267  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
268  }
269 
270  return frame->n_vectors;
271 }
272 
273 /* *INDENT-OFF* */
275  .function = srv6_ad_localsid_fn,
276  .name = "srv6-ad-localsid",
277  .vector_size = sizeof (u32),
278  .format_trace = format_srv6_ad_localsid_trace,
280  .n_next_nodes = SRV6_AD_LOCALSID_N_NEXT,
281  .next_nodes = {
282  [SRV6_AD_LOCALSID_NEXT_REWRITE4] = "ip4-rewrite",
283  [SRV6_AD_LOCALSID_NEXT_REWRITE6] = "ip6-rewrite",
284  [SRV6_AD_LOCALSID_NEXT_INTERFACE] = "interface-output",
285  [SRV6_AD_LOCALSID_NEXT_ERROR] = "error-drop",
286  },
287 };
288 /* *INDENT-ON* */
289 
290 
291 /******************************* Rewriting node *******************************/
292 
293 /**
294  * @brief Graph node for applying a SR policy into an IPv6 packet. Encapsulation
295  */
296 static uword
298  vlib_node_runtime_t * node, vlib_frame_t * frame)
299 {
300  ip6_sr_main_t *srm = &sr_main;
302  u32 n_left_from, next_index, *from, *to_next;
303  u32 cnt_packets = 0;
304 
305  from = vlib_frame_vector_args (frame);
306  n_left_from = frame->n_vectors;
307  next_index = node->cached_next_index;
308 
309  while (n_left_from > 0)
310  {
311  u32 n_left_to_next;
312 
313  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
314 
315  /* TODO: Dual/quad loop */
316 
317  while (n_left_from > 0 && n_left_to_next > 0)
318  {
319  u32 bi0;
320  vlib_buffer_t *b0;
321  ethernet_header_t *en0;
322  ip6_header_t *ip0 = 0;
323  ip6_sr_localsid_t *ls0;
324  srv6_ad_localsid_t *ls0_mem;
326 
327  bi0 = from[0];
328  to_next[0] = bi0;
329  from += 1;
330  to_next += 1;
331  n_left_from -= 1;
332  n_left_to_next -= 1;
333 
334  b0 = vlib_get_buffer (vm, bi0);
335  en0 = vlib_buffer_get_current (b0);
336  ls0 = pool_elt_at_index (srm->localsids,
338  (b0)->sw_if_index
339  [VLIB_RX]]);
340  ls0_mem = ls0->plugin_mem;
341 
342  if (PREDICT_FALSE (ls0_mem == NULL || ls0_mem->rewrite == NULL))
343  {
345  b0->error = node->errors[SRV6_AD_REWRITE_COUNTER_NO_RW];
346  }
347  else
348  {
350  (ls0_mem->rw_len + b0->current_data));
351 
352  clib_memcpy_fast (((u8 *) en0) - ls0_mem->rw_len,
353  ls0_mem->rewrite, ls0_mem->rw_len);
354  vlib_buffer_advance (b0, -(word) ls0_mem->rw_len);
355 
356  ip0 = vlib_buffer_get_current (b0);
357 
358  ip0->payload_length =
359  clib_host_to_net_u16 (b0->current_length -
360  sizeof (ip6_header_t));
361  }
362 
363  if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
364  PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
365  {
367  vlib_add_trace (vm, node, b0, sizeof *tr);
368  tr->error = 0;
369 
370  if (next0 == SRV6_AD_REWRITE_NEXT_ERROR)
371  {
372  tr->error = 1;
373  }
374  else
375  {
377  sizeof tr->src.as_u8);
379  sizeof tr->dst.as_u8);
380  }
381  }
382 
383  /* Increment per-SID AD rewrite counters */
386  &(sm->invalid_counters) :
387  &(sm->valid_counters)),
388  vm->thread_index, ls0_mem->index,
390  b0));
391 
392  vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
393  n_left_to_next, bi0, next0);
394 
395  cnt_packets++;
396  }
397 
398  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
399  }
400 
401  /* Update counters */
403  SRV6_AD_REWRITE_COUNTER_PROCESSED,
404  cnt_packets);
405 
406  return frame->n_vectors;
407 }
408 
409 /* *INDENT-OFF* */
411  .function = srv6_ad2_rewrite_fn,
412  .name = "srv6-ad2-rewrite",
413  .vector_size = sizeof (u32),
414  .format_trace = format_srv6_ad_rewrite_trace,
416  .n_errors = SRV6_AD_REWRITE_N_COUNTERS,
417  .error_strings = srv6_ad_rewrite_counter_strings,
418  .n_next_nodes = SRV6_AD_REWRITE_N_NEXT,
419  .next_nodes = {
420  [SRV6_AD_REWRITE_NEXT_LOOKUP] = "ip6-lookup",
421  [SRV6_AD_REWRITE_NEXT_ERROR] = "error-drop",
422  },
423 };
424 /* *INDENT-ON* */
425 
426 
427 /**
428  * @brief Graph node for applying a SR policy into an IPv6 packet. Encapsulation
429  */
430 static uword
432  vlib_node_runtime_t * node, vlib_frame_t * frame)
433 {
434  ip6_sr_main_t *srm = &sr_main;
436  u32 n_left_from, next_index, *from, *to_next;
437  u32 cnt_packets = 0;
438 
439  from = vlib_frame_vector_args (frame);
440  n_left_from = frame->n_vectors;
441  next_index = node->cached_next_index;
442 
443  while (n_left_from > 0)
444  {
445  u32 n_left_to_next;
446 
447  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
448 
449  /* TODO: Dual/quad loop */
450 
451  while (n_left_from > 0 && n_left_to_next > 0)
452  {
453  u32 bi0;
454  vlib_buffer_t *b0;
455  ip4_header_t *ip0_encap = 0;
456  ip6_header_t *ip0 = 0;
457  ip6_sr_localsid_t *ls0;
458  srv6_ad_localsid_t *ls0_mem;
460  u16 new_l0 = 0;
461 
462  bi0 = from[0];
463  to_next[0] = bi0;
464  from += 1;
465  to_next += 1;
466  n_left_from -= 1;
467  n_left_to_next -= 1;
468 
469  b0 = vlib_get_buffer (vm, bi0);
470  ip0_encap = vlib_buffer_get_current (b0);
471  ls0 = pool_elt_at_index (srm->localsids,
473  (b0)->sw_if_index
474  [VLIB_RX]]);
475  ls0_mem = ls0->plugin_mem;
476 
477  if (PREDICT_FALSE (ls0_mem == NULL || ls0_mem->rewrite == NULL))
478  {
480  b0->error = node->errors[SRV6_AD_REWRITE_COUNTER_NO_RW];
481  }
482  else
483  {
485  (ls0_mem->rw_len + b0->current_data));
486 
487  clib_memcpy_fast (((u8 *) ip0_encap) - ls0_mem->rw_len,
488  ls0_mem->rewrite, ls0_mem->rw_len);
489  vlib_buffer_advance (b0, -(word) ls0_mem->rw_len);
490 
491  ip0 = vlib_buffer_get_current (b0);
492 
493  /* Update inner IPv4 TTL and checksum */
494  u32 checksum0;
495  ip0_encap->ttl -= 1;
496  checksum0 = ip0_encap->checksum + clib_host_to_net_u16 (0x0100);
497  checksum0 += checksum0 >= 0xffff;
498  ip0_encap->checksum = checksum0;
499 
500  /* Update outer IPv6 length (in case it has changed) */
501  new_l0 = ls0_mem->rw_len - sizeof (ip6_header_t) +
502  clib_net_to_host_u16 (ip0_encap->length);
503  ip0->payload_length = clib_host_to_net_u16 (new_l0);
504  }
505 
506  if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
507  PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
508  {
510  vlib_add_trace (vm, node, b0, sizeof *tr);
511  tr->error = 0;
512 
513  if (next0 == SRV6_AD_REWRITE_NEXT_ERROR)
514  {
515  tr->error = 1;
516  }
517  else
518  {
520  sizeof tr->src.as_u8);
522  sizeof tr->dst.as_u8);
523  }
524  }
525 
526  /* Increment per-SID AD rewrite counters */
529  &(sm->invalid_counters) :
530  &(sm->valid_counters)),
531  vm->thread_index, ls0_mem->index,
533  b0));
534 
535  vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
536  n_left_to_next, bi0, next0);
537 
538  cnt_packets++;
539  }
540 
541  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
542  }
543 
544  /* Update counters */
546  SRV6_AD_REWRITE_COUNTER_PROCESSED,
547  cnt_packets);
548 
549  return frame->n_vectors;
550 }
551 
552 /* *INDENT-OFF* */
554  .function = srv6_ad4_rewrite_fn,
555  .name = "srv6-ad4-rewrite",
556  .vector_size = sizeof (u32),
557  .format_trace = format_srv6_ad_rewrite_trace,
559  .n_errors = SRV6_AD_REWRITE_N_COUNTERS,
560  .error_strings = srv6_ad_rewrite_counter_strings,
561  .n_next_nodes = SRV6_AD_REWRITE_N_NEXT,
562  .next_nodes = {
563  [SRV6_AD_REWRITE_NEXT_LOOKUP] = "ip6-lookup",
564  [SRV6_AD_REWRITE_NEXT_ERROR] = "error-drop",
565  },
566 };
567 /* *INDENT-ON* */
568 
569 
570 /**
571  * @brief Graph node for applying a SR policy into an IPv6 packet. Encapsulation
572  */
573 static uword
575  vlib_node_runtime_t * node, vlib_frame_t * frame)
576 {
577  ip6_sr_main_t *srm = &sr_main;
579  u32 n_left_from, next_index, *from, *to_next;
580  u32 cnt_packets = 0;
581 
582  from = vlib_frame_vector_args (frame);
583  n_left_from = frame->n_vectors;
584  next_index = node->cached_next_index;
585 
586  while (n_left_from > 0)
587  {
588  u32 n_left_to_next;
589 
590  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
591 
592  /* TODO: Dual/quad loop */
593 
594  while (n_left_from > 0 && n_left_to_next > 0)
595  {
596  u32 bi0;
597  vlib_buffer_t *b0;
598  ip6_header_t *ip0 = 0, *ip0_encap = 0;
599  ip6_sr_localsid_t *ls0;
600  srv6_ad_localsid_t *ls0_mem;
602  u16 new_l0 = 0;
603 
604  bi0 = from[0];
605  to_next[0] = bi0;
606  from += 1;
607  to_next += 1;
608  n_left_from -= 1;
609  n_left_to_next -= 1;
610 
611  b0 = vlib_get_buffer (vm, bi0);
612  ip0_encap = vlib_buffer_get_current (b0);
613  ls0 = pool_elt_at_index (srm->localsids,
615  (b0)->sw_if_index
616  [VLIB_RX]]);
617  ls0_mem = ls0->plugin_mem;
618 
619  if (PREDICT_FALSE (ls0_mem == NULL || ls0_mem->rewrite == NULL))
620  {
622  b0->error = node->errors[SRV6_AD_REWRITE_COUNTER_NO_RW];
623  }
624  else
625  {
627  (ls0_mem->rw_len + b0->current_data));
628 
629  clib_memcpy_fast (((u8 *) ip0_encap) - ls0_mem->rw_len,
630  ls0_mem->rewrite, ls0_mem->rw_len);
631  vlib_buffer_advance (b0, -(word) ls0_mem->rw_len);
632 
633  ip0 = vlib_buffer_get_current (b0);
634 
635  /* Update inner IPv6 hop limit */
636  ip0_encap->hop_limit -= 1;
637 
638  /* Update outer IPv6 length (in case it has changed) */
639  new_l0 = ls0_mem->rw_len +
640  clib_net_to_host_u16 (ip0_encap->payload_length);
641  ip0->payload_length = clib_host_to_net_u16 (new_l0);
642  }
643 
644  if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
645  PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
646  {
648  vlib_add_trace (vm, node, b0, sizeof *tr);
649  tr->error = 0;
650 
651  if (next0 == SRV6_AD_REWRITE_NEXT_ERROR)
652  {
653  tr->error = 1;
654  }
655  else
656  {
658  sizeof tr->src.as_u8);
660  sizeof tr->dst.as_u8);
661  }
662  }
663 
664  /* Increment per-SID AD rewrite counters */
667  &(sm->invalid_counters) :
668  &(sm->valid_counters)),
669  vm->thread_index, ls0_mem->index,
671  b0));
672 
673  vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
674  n_left_to_next, bi0, next0);
675 
676  cnt_packets++;
677  }
678 
679  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
680  }
681 
682  /* Update counters */
684  SRV6_AD_REWRITE_COUNTER_PROCESSED,
685  cnt_packets);
686 
687  return frame->n_vectors;
688 }
689 
690 /* *INDENT-OFF* */
692  .function = srv6_ad6_rewrite_fn,
693  .name = "srv6-ad6-rewrite",
694  .vector_size = sizeof (u32),
695  .format_trace = format_srv6_ad_rewrite_trace,
697  .n_errors = SRV6_AD_REWRITE_N_COUNTERS,
698  .error_strings = srv6_ad_rewrite_counter_strings,
699  .n_next_nodes = SRV6_AD_REWRITE_N_NEXT,
700  .next_nodes = {
701  [SRV6_AD_REWRITE_NEXT_LOOKUP] = "ip6-lookup",
702  [SRV6_AD_REWRITE_NEXT_ERROR] = "error-drop",
703  },
704 };
705 /* *INDENT-ON* */
706 
707 /*
708 * fd.io coding-style-patch-verification: ON
709 *
710 * Local Variables:
711 * eval: (c-set-style "gnu")
712 * End:
713 */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:439
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:124
ip6_sr_main_t sr_main
Definition: sr.c:31
static uword srv6_ad2_rewrite_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Graph node for applying a SR policy into an IPv6 packet.
Definition: node.c:297
#define CLIB_UNUSED(x)
Definition: clib.h:83
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:220
SR LocalSID.
Definition: sr.h:102
u8 as_u8[16]
Definition: ip6_packet.h:48
u64 as_u64[2]
Definition: ip6_packet.h:51
i16 current_data
signed offset in data[], pre_data[] that we are currently processing.
Definition: buffer.h:110
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
u32 * sw_iface_localsid4
Retrieve local SID from iface.
Definition: ad.h:60
#define VLIB_BUFFER_PRE_DATA_SIZE
Definition: buffer.h:51
u32 thread_index
Definition: main.h:218
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:113
static void * ip6_ext_next_header(ip6_ext_header_t *ext_hdr)
Definition: ip6_packet.h:552
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
#define ROUTING_HEADER_TYPE_SR
Definition: sr_packet.h:117
vlib_node_registration_t srv6_ad6_rewrite_node
(constructor) VLIB_REGISTER_NODE (srv6_ad6_rewrite_node)
Definition: node.c:64
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:470
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:366
vlib_combined_counter_main_t sr_ls_invalid_counters
Definition: sr.h:229
vlib_combined_counter_main_t sr_ls_valid_counters
Definition: sr.h:228
ip6_address_t src_address
Definition: ip6_packet.h:383
unsigned char u8
Definition: types.h:56
static uword srv6_ad_localsid_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
SRv6 AD Localsid graph node.
Definition: node.c:198
#define static_always_inline
Definition: clib.h:100
i64 word
Definition: types.h:111
vl_api_interface_index_t sw_if_index
Definition: gre.api:50
vlib_combined_counter_main_t invalid_counters
Invalid rewrite counters.
Definition: ad.h:66
unsigned int u32
Definition: types.h:88
u32 nh_adj
Adjacency index for out.
Definition: ad.h:38
vl_api_fib_path_type_t type
Definition: fib_types.api:123
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:136
static u8 * format_srv6_ad_localsid_trace(u8 *s, va_list *args)
Definition: node.c:35
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:514
static uword srv6_ad6_rewrite_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Graph node for applying a SR policy into an IPv6 packet.
Definition: node.c:574
u32 sw_if_index_out
Outgoing iface to proxied dev.
Definition: ad.h:37
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:229
u32 rw_len
Number of bits to be rewritten.
Definition: ad.h:42
#define PREDICT_FALSE(x)
Definition: clib.h:112
vlib_node_registration_t srv6_ad2_rewrite_node
(constructor) VLIB_REGISTER_NODE (srv6_ad2_rewrite_node)
Definition: node.c:410
u8 * rewrite
Headers to be rewritten.
Definition: ad.h: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:218
vl_api_address_t dst
Definition: gre.api:52
#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:338
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1150
#define ip6_ext_header_len(p)
Definition: ip6_packet.h:548
vlib_node_registration_t srv6_ad_localsid_node
(constructor) VLIB_REGISTER_NODE (srv6_ad_localsid_node)
Definition: node.c:274
ip6_sr_localsid_t * localsids
Definition: sr.h:204
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169
u16 n_vectors
Definition: node.h:397
format_function_t format_ip6_address
Definition: format.h:93
vlib_main_t * vm
Definition: buffer.c:323
static u8 * format_srv6_ad_rewrite_trace(u8 *s, va_list *args)
Definition: node.c:45
ip6_address_t src
Definition: node.c:31
#define foreach_srv6_ad_rewrite_counter
Definition: node.c:69
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:456
static u8 ip6_ext_hdr(u8 nexthdr)
Definition: ip6_packet.h:527
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:515
#define ASSERT(truth)
ip6_address_t dst
Definition: node.c:31
void * plugin_mem
Memory to be used by the plugin callback functions.
Definition: sr.h:124
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:248
srv6_ad_rewrite_counters
Definition: node.c:73
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
u32 * sw_iface_localsid2
Retrieve local SID from iface.
Definition: ad.h:59
struct _vlib_node_registration vlib_node_registration_t
Definition: defs.h:47
srv6_ad_localsid_next_t
Definition: node.c:90
vlib_combined_counter_main_t valid_counters
Valid rewrite counters.
Definition: ad.h:65
srv6_ad_rewrite_next_t
Definition: node.c:99
u32 * sw_iface_localsid6
Retrieve local SID from iface.
Definition: ad.h:61
u16 payload_length
Definition: ip6_packet.h:374
static uword srv6_ad4_rewrite_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Graph node for applying a SR policy into an IPv6 packet.
Definition: node.c:431
vl_api_address_t ip
Definition: l2.api:489
ip6_address_t segments[0]
Definition: sr_packet.h:149
VLIB buffer representation.
Definition: buffer.h:102
u64 uword
Definition: types.h:112
static char * srv6_ad_rewrite_counter_strings[]
Definition: node.c:81
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:244
#define vnet_buffer(b)
Definition: buffer.h:365
Segment Routing main datastructure.
Definition: sr.h:189
u16 flags
Copy of main node flags.
Definition: node.h:509
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:302
vlib_node_registration_t srv6_ad4_rewrite_node
(constructor) VLIB_REGISTER_NODE (srv6_ad4_rewrite_node)
Definition: node.c:63
static_always_inline void end_ad_processing(vlib_buffer_t *b0, ip6_header_t *ip0, ip6_sr_header_t *sr0, ip6_sr_localsid_t *ls0, u32 *next0)
Function doing SRH processing for AD behavior.
Definition: node.c:113
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:85
Definition: defs.h:46
ip6_address_t dst_address
Definition: ip6_packet.h:383