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Vector Packet Processing
decap.c
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1 /*
2  * decap.c - decapsulate VXLAN GPE
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  * @file
19  * @brief Functions for decapsulating VXLAN GPE tunnels
20  *
21 */
22 
23 #include <vlib/vlib.h>
24 #include <vnet/pg/pg.h>
26 
28 
29 /**
30  * @brief Struct for VXLAN GPE decap packet tracing
31  *
32  */
33 typedef struct
34 {
39 
40 /**
41  * @brief Tracing function for VXLAN GPE packet decapsulation
42  *
43  * @param *s
44  * @param *args
45  *
46  * @return *s
47  *
48  */
49 static u8 *
50 format_vxlan_gpe_rx_trace (u8 * s, va_list * args)
51 {
52  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
53  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
54  vxlan_gpe_rx_trace_t *t = va_arg (*args, vxlan_gpe_rx_trace_t *);
55 
56  if (t->tunnel_index != ~0)
57  {
58  s = format (s, "VXLAN-GPE: tunnel %d next %d error %d", t->tunnel_index,
59  t->next_index, t->error);
60  }
61  else
62  {
63  s = format (s, "VXLAN-GPE: no tunnel next %d error %d\n", t->next_index,
64  t->error);
65  }
66  return s;
67 }
68 
69 /**
70  * @brief Tracing function for VXLAN GPE packet decapsulation including length
71  *
72  * @param *s
73  * @param *args
74  *
75  * @return *s
76  *
77  */
78 static u8 *
79 format_vxlan_gpe_with_length (u8 * s, va_list * args)
80 {
81  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
82  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
83 
84 
85  return s;
86 }
87 
88 /**
89  * @brief Common processing for IPv4 and IPv6 VXLAN GPE decap dispatch functions
90  *
91  * It is worth noting that other than trivial UDP forwarding (transit), VXLAN GPE
92  * tunnels are "terminate local". This means that there is no "TX" interface for this
93  * decap case, so that field in the buffer_metadata can be "used for something else".
94  * The something else in this case is, for the IPv4/IPv6 inner-packet type case, the
95  * FIB index used to look up the inner-packet's adjacency.
96  *
97  * vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index;
98  *
99  * @param *vm
100  * @param *node
101  * @param *from_frame
102  * @param is_ip4
103  *
104  * @return from_frame->n_vectors
105  *
106  */
109  vlib_node_runtime_t * node,
110  vlib_frame_t * from_frame, u8 is_ip4)
111 {
112  u32 n_left_from, next_index, *from, *to_next;
114  vnet_main_t *vnm = nngm->vnet_main;
116  u32 last_tunnel_index = ~0;
117  vxlan4_gpe_tunnel_key_t last_key4;
118  vxlan6_gpe_tunnel_key_t last_key6;
119  u32 pkts_decapsulated = 0;
120  u32 thread_index = vlib_get_thread_index ();
121  u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
122 
123  if (is_ip4)
124  memset (&last_key4, 0xff, sizeof (last_key4));
125  else
126  memset (&last_key6, 0xff, sizeof (last_key6));
127 
128  from = vlib_frame_vector_args (from_frame);
129  n_left_from = from_frame->n_vectors;
130 
131  next_index = node->cached_next_index;
132  stats_sw_if_index = node->runtime_data[0];
133  stats_n_packets = stats_n_bytes = 0;
134 
135  while (n_left_from > 0)
136  {
137  u32 n_left_to_next;
138 
139  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
140 
141  while (n_left_from >= 4 && n_left_to_next >= 2)
142  {
143  u32 bi0, bi1;
144  vlib_buffer_t *b0, *b1;
145  u32 next0, next1;
146  ip4_vxlan_gpe_header_t *iuvn4_0, *iuvn4_1;
147  ip6_vxlan_gpe_header_t *iuvn6_0, *iuvn6_1;
148  uword *p0, *p1;
149  u32 tunnel_index0, tunnel_index1;
150  vxlan_gpe_tunnel_t *t0, *t1;
151  vxlan4_gpe_tunnel_key_t key4_0, key4_1;
152  vxlan6_gpe_tunnel_key_t key6_0, key6_1;
153  u32 error0, error1;
154  u32 sw_if_index0, sw_if_index1, len0, len1;
155 
156  /* Prefetch next iteration. */
157  {
158  vlib_buffer_t *p2, *p3;
159 
160  p2 = vlib_get_buffer (vm, from[2]);
161  p3 = vlib_get_buffer (vm, from[3]);
162 
163  vlib_prefetch_buffer_header (p2, LOAD);
164  vlib_prefetch_buffer_header (p3, LOAD);
165 
166  CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
167  CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
168  }
169 
170  bi0 = from[0];
171  bi1 = from[1];
172  to_next[0] = bi0;
173  to_next[1] = bi1;
174  from += 2;
175  to_next += 2;
176  n_left_to_next -= 2;
177  n_left_from -= 2;
178 
179  b0 = vlib_get_buffer (vm, bi0);
180  b1 = vlib_get_buffer (vm, bi1);
181 
182  if (is_ip4)
183  {
184  /* udp leaves current_data pointing at the vxlan-gpe header */
186  -(word) (sizeof (udp_header_t) +
187  sizeof (ip4_header_t)));
189  -(word) (sizeof (udp_header_t) +
190  sizeof (ip4_header_t)));
191 
192  iuvn4_0 = vlib_buffer_get_current (b0);
193  iuvn4_1 = vlib_buffer_get_current (b1);
194 
195  /* pop (ip, udp, vxlan) */
196  vlib_buffer_advance (b0, sizeof (*iuvn4_0));
197  vlib_buffer_advance (b1, sizeof (*iuvn4_1));
198  }
199  else
200  {
201  /* udp leaves current_data pointing at the vxlan-gpe header */
203  -(word) (sizeof (udp_header_t) +
204  sizeof (ip6_header_t)));
206  -(word) (sizeof (udp_header_t) +
207  sizeof (ip6_header_t)));
208 
209  iuvn6_0 = vlib_buffer_get_current (b0);
210  iuvn6_1 = vlib_buffer_get_current (b1);
211 
212  /* pop (ip, udp, vxlan) */
213  vlib_buffer_advance (b0, sizeof (*iuvn6_0));
214  vlib_buffer_advance (b1, sizeof (*iuvn6_1));
215  }
216 
217  tunnel_index0 = ~0;
218  tunnel_index1 = ~0;
219  error0 = 0;
220  error1 = 0;
221 
222  if (is_ip4)
223  {
224  next0 =
225  (iuvn4_0->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ?
226  nngm->decap_next_node_list[iuvn4_0->vxlan.protocol] :
227  VXLAN_GPE_INPUT_NEXT_DROP;
228  next1 =
229  (iuvn4_1->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ?
230  nngm->decap_next_node_list[iuvn4_1->vxlan.protocol] :
231  VXLAN_GPE_INPUT_NEXT_DROP;
232 
233  key4_0.local = iuvn4_0->ip4.dst_address.as_u32;
234  key4_1.local = iuvn4_1->ip4.dst_address.as_u32;
235 
236  key4_0.remote = iuvn4_0->ip4.src_address.as_u32;
237  key4_1.remote = iuvn4_1->ip4.src_address.as_u32;
238 
239  key4_0.vni = iuvn4_0->vxlan.vni_res;
240  key4_1.vni = iuvn4_1->vxlan.vni_res;
241 
242  key4_0.pad = 0;
243  key4_1.pad = 0;
244  }
245  else /* is_ip6 */
246  {
247  next0 = (iuvn6_0->vxlan.protocol < node->n_next_nodes) ?
248  iuvn6_0->vxlan.protocol : VXLAN_GPE_INPUT_NEXT_DROP;
249  next1 = (iuvn6_1->vxlan.protocol < node->n_next_nodes) ?
250  iuvn6_1->vxlan.protocol : VXLAN_GPE_INPUT_NEXT_DROP;
251 
252  key6_0.local.as_u64[0] = iuvn6_0->ip6.dst_address.as_u64[0];
253  key6_0.local.as_u64[1] = iuvn6_0->ip6.dst_address.as_u64[1];
254  key6_1.local.as_u64[0] = iuvn6_1->ip6.dst_address.as_u64[0];
255  key6_1.local.as_u64[1] = iuvn6_1->ip6.dst_address.as_u64[1];
256 
257  key6_0.remote.as_u64[0] = iuvn6_0->ip6.src_address.as_u64[0];
258  key6_0.remote.as_u64[1] = iuvn6_0->ip6.src_address.as_u64[1];
259  key6_1.remote.as_u64[0] = iuvn6_1->ip6.src_address.as_u64[0];
260  key6_1.remote.as_u64[1] = iuvn6_1->ip6.src_address.as_u64[1];
261 
262  key6_0.vni = iuvn6_0->vxlan.vni_res;
263  key6_1.vni = iuvn6_1->vxlan.vni_res;
264  }
265 
266  /* Processing packet 0 */
267  if (is_ip4)
268  {
269  /* Processing for key4_0 */
270  if (PREDICT_FALSE ((key4_0.as_u64[0] != last_key4.as_u64[0])
271  || (key4_0.as_u64[1] !=
272  last_key4.as_u64[1])))
273  {
274  p0 = hash_get_mem (nngm->vxlan4_gpe_tunnel_by_key, &key4_0);
275 
276  if (p0 == 0)
277  {
278  error0 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL;
279  goto trace0;
280  }
281 
282  last_key4.as_u64[0] = key4_0.as_u64[0];
283  last_key4.as_u64[1] = key4_0.as_u64[1];
284  tunnel_index0 = last_tunnel_index = p0[0];
285  }
286  else
287  tunnel_index0 = last_tunnel_index;
288  }
289  else /* is_ip6 */
290  {
291  next0 =
292  (iuvn6_0->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ?
293  nngm->decap_next_node_list[iuvn6_0->vxlan.protocol] :
294  VXLAN_GPE_INPUT_NEXT_DROP;
295  next1 =
296  (iuvn6_1->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ?
297  nngm->decap_next_node_list[iuvn6_1->vxlan.protocol] :
298  VXLAN_GPE_INPUT_NEXT_DROP;
299 
300  key6_0.local.as_u64[0] = iuvn6_0->ip6.dst_address.as_u64[0];
301  key6_0.local.as_u64[1] = iuvn6_0->ip6.dst_address.as_u64[1];
302  key6_1.local.as_u64[0] = iuvn6_1->ip6.dst_address.as_u64[0];
303  key6_1.local.as_u64[1] = iuvn6_1->ip6.dst_address.as_u64[1];
304 
305  key6_0.remote.as_u64[0] = iuvn6_0->ip6.src_address.as_u64[0];
306  key6_0.remote.as_u64[1] = iuvn6_0->ip6.src_address.as_u64[1];
307  key6_1.remote.as_u64[0] = iuvn6_1->ip6.src_address.as_u64[0];
308  key6_1.remote.as_u64[1] = iuvn6_1->ip6.src_address.as_u64[1];
309 
310  key6_0.vni = iuvn6_0->vxlan.vni_res;
311  key6_1.vni = iuvn6_1->vxlan.vni_res;
312 
313  /* Processing for key6_0 */
314  if (PREDICT_FALSE
315  (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
316  {
317  p0 = hash_get_mem (nngm->vxlan6_gpe_tunnel_by_key, &key6_0);
318 
319  if (p0 == 0)
320  {
321  error0 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL;
322  goto trace0;
323  }
324 
325  memcpy (&last_key6, &key6_0, sizeof (key6_0));
326  tunnel_index0 = last_tunnel_index = p0[0];
327  }
328  else
329  tunnel_index0 = last_tunnel_index;
330  }
331 
332  t0 = pool_elt_at_index (nngm->tunnels, tunnel_index0);
333 
334 
335  sw_if_index0 = t0->sw_if_index;
336  len0 = vlib_buffer_length_in_chain (vm, b0);
337 
338  /* Required to make the l2 tag push / pop code work on l2 subifs */
339  vnet_update_l2_len (b0);
340 
341  /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
342  vnet_buffer (b0)->sw_if_index[VLIB_RX] = t0->sw_if_index;
343 
344  /**
345  * ip[46] lookup in the configured FIB
346  */
347  vnet_buffer (b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index;
348 
349  pkts_decapsulated++;
350  stats_n_packets += 1;
351  stats_n_bytes += len0;
352 
353  if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
354  {
355  stats_n_packets -= 1;
356  stats_n_bytes -= len0;
357  if (stats_n_packets)
360  thread_index,
361  stats_sw_if_index,
362  stats_n_packets,
363  stats_n_bytes);
364  stats_n_packets = 1;
365  stats_n_bytes = len0;
366  stats_sw_if_index = sw_if_index0;
367  }
368 
369  trace0:b0->error = error0 ? node->errors[error0] : 0;
370 
371  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
372  {
374  vlib_add_trace (vm, node, b0, sizeof (*tr));
375  tr->next_index = next0;
376  tr->error = error0;
377  tr->tunnel_index = tunnel_index0;
378  }
379 
380  /* Process packet 1 */
381  if (is_ip4)
382  {
383  /* Processing for key4_1 */
384  if (PREDICT_FALSE ((key4_1.as_u64[0] != last_key4.as_u64[0])
385  || (key4_1.as_u64[1] !=
386  last_key4.as_u64[1])))
387  {
388  p1 = hash_get_mem (nngm->vxlan4_gpe_tunnel_by_key, &key4_1);
389 
390  if (p1 == 0)
391  {
392  error1 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL;
393  goto trace1;
394  }
395 
396  last_key4.as_u64[0] = key4_1.as_u64[0];
397  last_key4.as_u64[1] = key4_1.as_u64[1];
398  tunnel_index1 = last_tunnel_index = p1[0];
399  }
400  else
401  tunnel_index1 = last_tunnel_index;
402  }
403  else /* is_ip6 */
404  {
405  /* Processing for key6_1 */
406  if (PREDICT_FALSE
407  (memcmp (&key6_1, &last_key6, sizeof (last_key6)) != 0))
408  {
409  p1 = hash_get_mem (nngm->vxlan6_gpe_tunnel_by_key, &key6_1);
410 
411  if (p1 == 0)
412  {
413  error1 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL;
414  goto trace1;
415  }
416 
417  memcpy (&last_key6, &key6_1, sizeof (key6_1));
418  tunnel_index1 = last_tunnel_index = p1[0];
419  }
420  else
421  tunnel_index1 = last_tunnel_index;
422  }
423 
424  t1 = pool_elt_at_index (nngm->tunnels, tunnel_index1);
425 
426  sw_if_index1 = t1->sw_if_index;
427  len1 = vlib_buffer_length_in_chain (vm, b1);
428 
429  /* Required to make the l2 tag push / pop code work on l2 subifs */
430  vnet_update_l2_len (b1);
431 
432  /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
433  vnet_buffer (b1)->sw_if_index[VLIB_RX] = t1->sw_if_index;
434 
435  /*
436  * ip[46] lookup in the configured FIB
437  */
438  vnet_buffer (b1)->sw_if_index[VLIB_TX] = t1->decap_fib_index;
439 
440  pkts_decapsulated++;
441  stats_n_packets += 1;
442  stats_n_bytes += len1;
443 
444  /* Batch stats increment on the same vxlan tunnel so counter
445  is not incremented per packet */
446  if (PREDICT_FALSE (sw_if_index1 != stats_sw_if_index))
447  {
448  stats_n_packets -= 1;
449  stats_n_bytes -= len1;
450  if (stats_n_packets)
453  thread_index,
454  stats_sw_if_index,
455  stats_n_packets,
456  stats_n_bytes);
457  stats_n_packets = 1;
458  stats_n_bytes = len1;
459  stats_sw_if_index = sw_if_index1;
460  }
461  vnet_buffer (b1)->sw_if_index[VLIB_TX] = t1->decap_fib_index;
462 
463  trace1:b1->error = error1 ? node->errors[error1] : 0;
464 
465  if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
466  {
468  vlib_add_trace (vm, node, b1, sizeof (*tr));
469  tr->next_index = next1;
470  tr->error = error1;
471  tr->tunnel_index = tunnel_index1;
472  }
473 
474  vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
475  n_left_to_next, bi0, bi1, next0,
476  next1);
477  }
478 
479  while (n_left_from > 0 && n_left_to_next > 0)
480  {
481  u32 bi0;
482  vlib_buffer_t *b0;
483  u32 next0;
484  ip4_vxlan_gpe_header_t *iuvn4_0;
485  ip6_vxlan_gpe_header_t *iuvn6_0;
486  uword *p0;
487  u32 tunnel_index0;
488  vxlan_gpe_tunnel_t *t0;
489  vxlan4_gpe_tunnel_key_t key4_0;
490  vxlan6_gpe_tunnel_key_t key6_0;
491  u32 error0;
492  u32 sw_if_index0, len0;
493 
494  bi0 = from[0];
495  to_next[0] = bi0;
496  from += 1;
497  to_next += 1;
498  n_left_from -= 1;
499  n_left_to_next -= 1;
500 
501  b0 = vlib_get_buffer (vm, bi0);
502 
503  if (is_ip4)
504  {
505  /* udp leaves current_data pointing at the vxlan-gpe header */
507  -(word) (sizeof (udp_header_t) +
508  sizeof (ip4_header_t)));
509 
510  iuvn4_0 = vlib_buffer_get_current (b0);
511 
512  /* pop (ip, udp, vxlan) */
513  vlib_buffer_advance (b0, sizeof (*iuvn4_0));
514  }
515  else
516  {
517  /* udp leaves current_data pointing at the vxlan-gpe header */
519  -(word) (sizeof (udp_header_t) +
520  sizeof (ip6_header_t)));
521 
522  iuvn6_0 = vlib_buffer_get_current (b0);
523 
524  /* pop (ip, udp, vxlan) */
525  vlib_buffer_advance (b0, sizeof (*iuvn6_0));
526  }
527 
528  tunnel_index0 = ~0;
529  error0 = 0;
530 
531  if (is_ip4)
532  {
533  next0 =
534  (iuvn4_0->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ?
535  nngm->decap_next_node_list[iuvn4_0->vxlan.protocol] :
536  VXLAN_GPE_INPUT_NEXT_DROP;
537 
538  key4_0.local = iuvn4_0->ip4.dst_address.as_u32;
539  key4_0.remote = iuvn4_0->ip4.src_address.as_u32;
540  key4_0.vni = iuvn4_0->vxlan.vni_res;
541  key4_0.pad = 0;
542 
543  /* Processing for key4_0 */
544  if (PREDICT_FALSE ((key4_0.as_u64[0] != last_key4.as_u64[0])
545  || (key4_0.as_u64[1] !=
546  last_key4.as_u64[1])))
547  {
548  p0 = hash_get_mem (nngm->vxlan4_gpe_tunnel_by_key, &key4_0);
549 
550  if (p0 == 0)
551  {
552  error0 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL;
553  goto trace00;
554  }
555 
556  last_key4.as_u64[0] = key4_0.as_u64[0];
557  last_key4.as_u64[1] = key4_0.as_u64[1];
558  tunnel_index0 = last_tunnel_index = p0[0];
559  }
560  else
561  tunnel_index0 = last_tunnel_index;
562  }
563  else /* is_ip6 */
564  {
565  next0 =
566  (iuvn6_0->vxlan.protocol < VXLAN_GPE_PROTOCOL_MAX) ?
567  nngm->decap_next_node_list[iuvn6_0->vxlan.protocol] :
568  VXLAN_GPE_INPUT_NEXT_DROP;
569 
570  key6_0.local.as_u64[0] = iuvn6_0->ip6.dst_address.as_u64[0];
571  key6_0.local.as_u64[1] = iuvn6_0->ip6.dst_address.as_u64[1];
572  key6_0.remote.as_u64[0] = iuvn6_0->ip6.src_address.as_u64[0];
573  key6_0.remote.as_u64[1] = iuvn6_0->ip6.src_address.as_u64[1];
574  key6_0.vni = iuvn6_0->vxlan.vni_res;
575 
576  /* Processing for key6_0 */
577  if (PREDICT_FALSE
578  (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
579  {
580  p0 = hash_get_mem (nngm->vxlan6_gpe_tunnel_by_key, &key6_0);
581 
582  if (p0 == 0)
583  {
584  error0 = VXLAN_GPE_ERROR_NO_SUCH_TUNNEL;
585  goto trace00;
586  }
587 
588  memcpy (&last_key6, &key6_0, sizeof (key6_0));
589  tunnel_index0 = last_tunnel_index = p0[0];
590  }
591  else
592  tunnel_index0 = last_tunnel_index;
593  }
594 
595  t0 = pool_elt_at_index (nngm->tunnels, tunnel_index0);
596 
597 
598  sw_if_index0 = t0->sw_if_index;
599  len0 = vlib_buffer_length_in_chain (vm, b0);
600 
601  /* Required to make the l2 tag push / pop code work on l2 subifs */
602  vnet_update_l2_len (b0);
603 
604  /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
605  vnet_buffer (b0)->sw_if_index[VLIB_RX] = t0->sw_if_index;
606 
607  /*
608  * ip[46] lookup in the configured FIB
609  */
610  vnet_buffer (b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index;
611 
612  pkts_decapsulated++;
613  stats_n_packets += 1;
614  stats_n_bytes += len0;
615 
616  /* Batch stats increment on the same vxlan-gpe tunnel so counter
617  is not incremented per packet */
618  if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
619  {
620  stats_n_packets -= 1;
621  stats_n_bytes -= len0;
622  if (stats_n_packets)
625  thread_index,
626  stats_sw_if_index,
627  stats_n_packets,
628  stats_n_bytes);
629  stats_n_packets = 1;
630  stats_n_bytes = len0;
631  stats_sw_if_index = sw_if_index0;
632  }
633 
634  trace00:b0->error = error0 ? node->errors[error0] : 0;
635 
636  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
637  {
639  vlib_add_trace (vm, node, b0, sizeof (*tr));
640  tr->next_index = next0;
641  tr->error = error0;
642  tr->tunnel_index = tunnel_index0;
643  }
644  vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
645  n_left_to_next, bi0, next0);
646  }
647 
648  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
649  }
651  VXLAN_GPE_ERROR_DECAPSULATED,
652  pkts_decapsulated);
653  /* Increment any remaining batch stats */
654  if (stats_n_packets)
655  {
658  thread_index, stats_sw_if_index,
659  stats_n_packets, stats_n_bytes);
660  node->runtime_data[0] = stats_sw_if_index;
661  }
662  return from_frame->n_vectors;
663 }
664 
665 /**
666  * @brief Graph processing dispatch function for IPv4 VXLAN GPE
667  *
668  * @node vxlan4-gpe-input
669  * @param *vm
670  * @param *node
671  * @param *from_frame
672  *
673  * @return from_frame->n_vectors
674  *
675  */
676 static uword
678  vlib_frame_t * from_frame)
679 {
680  return vxlan_gpe_input (vm, node, from_frame, /* is_ip4 */ 1);
681 }
682 
683 
684 void
685 vxlan_gpe_register_decap_protocol (u8 protocol_id, uword next_node_index)
686 {
688  hm->decap_next_node_list[protocol_id] = next_node_index;
689  return;
690 }
691 
692 void
693 vxlan_gpe_unregister_decap_protocol (u8 protocol_id, uword next_node_index)
694 {
696  hm->decap_next_node_list[protocol_id] = VXLAN_GPE_INPUT_NEXT_DROP;
697  return;
698 }
699 
700 
701 /**
702  * @brief Graph processing dispatch function for IPv6 VXLAN GPE
703  *
704  * @node vxlan6-gpe-input
705  * @param *vm
706  * @param *node
707  * @param *from_frame
708  *
709  * @return from_frame->n_vectors - uword
710  *
711  */
712 static uword
714  vlib_frame_t * from_frame)
715 {
716  return vxlan_gpe_input (vm, node, from_frame, /* is_ip4 */ 0);
717 }
718 
719 /**
720  * @brief VXLAN GPE error strings
721  */
722 static char *vxlan_gpe_error_strings[] = {
723 #define vxlan_gpe_error(n,s) s,
725 #undef vxlan_gpe_error
726 #undef _
727 };
728 
729 /* *INDENT-OFF* */
731  .function = vxlan4_gpe_input,
732  .name = "vxlan4-gpe-input",
733  /* Takes a vector of packets. */
734  .vector_size = sizeof (u32),
735  .type = VLIB_NODE_TYPE_INTERNAL,
736  .n_errors = ARRAY_LEN(vxlan_gpe_error_strings),
737  .error_strings = vxlan_gpe_error_strings,
738 
739  .n_next_nodes = VXLAN_GPE_INPUT_N_NEXT,
740  .next_nodes = {
741 #define _(s,n) [VXLAN_GPE_INPUT_NEXT_##s] = n,
743 #undef _
744  },
745 
746  .format_buffer = format_vxlan_gpe_with_length,
747  .format_trace = format_vxlan_gpe_rx_trace,
748  // $$$$ .unformat_buffer = unformat_vxlan_gpe_header,
749 };
750 /* *INDENT-ON* */
751 
753 
754 /* *INDENT-OFF* */
756  .function = vxlan6_gpe_input,
757  .name = "vxlan6-gpe-input",
758  /* Takes a vector of packets. */
759  .vector_size = sizeof (u32),
760  .type = VLIB_NODE_TYPE_INTERNAL,
761  .n_errors = ARRAY_LEN(vxlan_gpe_error_strings),
762  .error_strings = vxlan_gpe_error_strings,
763 
764  .n_next_nodes = VXLAN_GPE_INPUT_N_NEXT,
765  .next_nodes = {
766 #define _(s,n) [VXLAN_GPE_INPUT_NEXT_##s] = n,
768 #undef _
769  },
770 
771  .format_buffer = format_vxlan_gpe_with_length,
772  .format_trace = format_vxlan_gpe_rx_trace,
773  // $$$$ .unformat_buffer = unformat_vxlan_gpe_header,
774 };
775 /* *INDENT-ON* */
776 
778 typedef enum
779 {
784 
787  vlib_node_runtime_t * node,
788  vlib_frame_t * frame, u32 is_ip4)
789 {
791  u32 *from, *to_next, n_left_from, n_left_to_next, next_index;
792  vlib_node_runtime_t *error_node =
794  ip4_address_t addr4; /* last IPv4 address matching a local VTEP address */
795  ip6_address_t addr6; /* last IPv6 address matching a local VTEP address */
796 
797  from = vlib_frame_vector_args (frame);
798  n_left_from = frame->n_vectors;
799  next_index = node->cached_next_index;
800 
801  if (node->flags & VLIB_NODE_FLAG_TRACE)
802  ip4_forward_next_trace (vm, node, frame, VLIB_TX);
803 
804  if (is_ip4)
805  addr4.data_u32 = ~0;
806  else
807  ip6_address_set_zero (&addr6);
808 
809  while (n_left_from > 0)
810  {
811  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
812 
813  while (n_left_from >= 4 && n_left_to_next >= 2)
814  {
815  vlib_buffer_t *b0, *b1;
816  ip4_header_t *ip40, *ip41;
817  ip6_header_t *ip60, *ip61;
818  udp_header_t *udp0, *udp1;
819  u32 bi0, ip_len0, udp_len0, flags0, next0;
820  u32 bi1, ip_len1, udp_len1, flags1, next1;
821  i32 len_diff0, len_diff1;
822  u8 error0, good_udp0, proto0;
823  u8 error1, good_udp1, proto1;
824 
825  /* Prefetch next iteration. */
826  {
827  vlib_buffer_t *p2, *p3;
828 
829  p2 = vlib_get_buffer (vm, from[2]);
830  p3 = vlib_get_buffer (vm, from[3]);
831 
832  vlib_prefetch_buffer_header (p2, LOAD);
833  vlib_prefetch_buffer_header (p3, LOAD);
834 
835  CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
836  CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
837  }
838 
839  bi0 = to_next[0] = from[0];
840  bi1 = to_next[1] = from[1];
841  from += 2;
842  n_left_from -= 2;
843  to_next += 2;
844  n_left_to_next -= 2;
845 
846  b0 = vlib_get_buffer (vm, bi0);
847  b1 = vlib_get_buffer (vm, bi1);
848  if (is_ip4)
849  {
850  ip40 = vlib_buffer_get_current (b0);
851  ip41 = vlib_buffer_get_current (b1);
852  }
853  else
854  {
855  ip60 = vlib_buffer_get_current (b0);
856  ip61 = vlib_buffer_get_current (b1);
857  }
858 
859  /* Setup packet for next IP feature */
860  vnet_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_RX], &next0,
861  b0);
862  vnet_feature_next (vnet_buffer (b1)->sw_if_index[VLIB_RX], &next1,
863  b1);
864 
865  if (is_ip4)
866  {
867  proto0 = ip40->protocol;
868  proto1 = ip41->protocol;
869  }
870  else
871  {
872  proto0 = ip60->protocol;
873  proto1 = ip61->protocol;
874  }
875 
876  /* Process packet 0 */
877  if (proto0 != IP_PROTOCOL_UDP)
878  goto exit0; /* not UDP packet */
879 
880  if (is_ip4)
881  udp0 = ip4_next_header (ip40);
882  else
883  udp0 = ip6_next_header (ip60);
884 
885  if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_VXLAN_GPE))
886  goto exit0; /* not VXLAN packet */
887 
888  /* Validate DIP against VTEPs */
889  if (is_ip4)
890  {
891  if (addr4.as_u32 != ip40->dst_address.as_u32)
892  {
893  if (!hash_get (ngm->vtep4, ip40->dst_address.as_u32))
894  goto exit0; /* no local VTEP for VXLAN packet */
895  addr4 = ip40->dst_address;
896  }
897  }
898  else
899  {
900  if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
901  {
902  if (!hash_get_mem (ngm->vtep6, &ip60->dst_address))
903  goto exit0; /* no local VTEP for VXLAN packet */
904  addr6 = ip60->dst_address;
905  }
906  }
907 
908  flags0 = b0->flags;
909  good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
910 
911  /* Don't verify UDP checksum for packets with explicit zero checksum. */
912  good_udp0 |= udp0->checksum == 0;
913 
914  /* Verify UDP length */
915  if (is_ip4)
916  ip_len0 = clib_net_to_host_u16 (ip40->length);
917  else
918  ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
919  udp_len0 = clib_net_to_host_u16 (udp0->length);
920  len_diff0 = ip_len0 - udp_len0;
921 
922  /* Verify UDP checksum */
923  if (PREDICT_FALSE (!good_udp0))
924  {
925  if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
926  {
927  if (is_ip4)
928  flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
929  else
930  flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
931  good_udp0 =
932  (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
933  }
934  }
935 
936  if (is_ip4)
937  {
938  error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
939  error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
940  }
941  else
942  {
943  error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
944  error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
945  }
946 
947  next0 = error0 ?
949  b0->error = error0 ? error_node->errors[error0] : 0;
950 
951  /* vxlan_gpe-input node expect current at VXLAN header */
952  if (is_ip4)
954  sizeof (ip4_header_t) +
955  sizeof (udp_header_t));
956  else
958  sizeof (ip6_header_t) +
959  sizeof (udp_header_t));
960 
961  exit0:
962  /* Process packet 1 */
963  if (proto1 != IP_PROTOCOL_UDP)
964  goto exit1; /* not UDP packet */
965 
966  if (is_ip4)
967  udp1 = ip4_next_header (ip41);
968  else
969  udp1 = ip6_next_header (ip61);
970 
971  if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_VXLAN_GPE))
972  goto exit1; /* not VXLAN packet */
973 
974  /* Validate DIP against VTEPs */
975  if (is_ip4)
976  {
977  if (addr4.as_u32 != ip41->dst_address.as_u32)
978  {
979  if (!hash_get (ngm->vtep4, ip41->dst_address.as_u32))
980  goto exit1; /* no local VTEP for VXLAN packet */
981  addr4 = ip41->dst_address;
982  }
983  }
984  else
985  {
986  if (!ip6_address_is_equal (&addr6, &ip61->dst_address))
987  {
988  if (!hash_get_mem (ngm->vtep6, &ip61->dst_address))
989  goto exit1; /* no local VTEP for VXLAN packet */
990  addr6 = ip61->dst_address;
991  }
992  }
993 
994  flags1 = b1->flags;
995  good_udp1 = (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
996 
997  /* Don't verify UDP checksum for packets with explicit zero checksum. */
998  good_udp1 |= udp1->checksum == 0;
999 
1000  /* Verify UDP length */
1001  if (is_ip4)
1002  ip_len1 = clib_net_to_host_u16 (ip41->length);
1003  else
1004  ip_len1 = clib_net_to_host_u16 (ip61->payload_length);
1005  udp_len1 = clib_net_to_host_u16 (udp1->length);
1006  len_diff1 = ip_len1 - udp_len1;
1007 
1008  /* Verify UDP checksum */
1009  if (PREDICT_FALSE (!good_udp1))
1010  {
1011  if ((flags1 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1012  {
1013  if (is_ip4)
1014  flags1 = ip4_tcp_udp_validate_checksum (vm, b1);
1015  else
1016  flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, b1);
1017  good_udp1 =
1018  (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1019  }
1020  }
1021 
1022  if (is_ip4)
1023  {
1024  error1 = good_udp1 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1025  error1 = (len_diff1 >= 0) ? error1 : IP4_ERROR_UDP_LENGTH;
1026  }
1027  else
1028  {
1029  error1 = good_udp1 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1030  error1 = (len_diff1 >= 0) ? error1 : IP6_ERROR_UDP_LENGTH;
1031  }
1032 
1033  next1 = error1 ?
1035  b1->error = error1 ? error_node->errors[error1] : 0;
1036 
1037  /* vxlan_gpe-input node expect current at VXLAN header */
1038  if (is_ip4)
1039  vlib_buffer_advance (b1,
1040  sizeof (ip4_header_t) +
1041  sizeof (udp_header_t));
1042  else
1043  vlib_buffer_advance (b1,
1044  sizeof (ip6_header_t) +
1045  sizeof (udp_header_t));
1046 
1047  exit1:
1048  vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
1049  to_next, n_left_to_next,
1050  bi0, bi1, next0, next1);
1051  }
1052 
1053  while (n_left_from > 0 && n_left_to_next > 0)
1054  {
1055  vlib_buffer_t *b0;
1056  ip4_header_t *ip40;
1057  ip6_header_t *ip60;
1058  udp_header_t *udp0;
1059  u32 bi0, ip_len0, udp_len0, flags0, next0;
1060  i32 len_diff0;
1061  u8 error0, good_udp0, proto0;
1062 
1063  bi0 = to_next[0] = from[0];
1064  from += 1;
1065  n_left_from -= 1;
1066  to_next += 1;
1067  n_left_to_next -= 1;
1068 
1069  b0 = vlib_get_buffer (vm, bi0);
1070  if (is_ip4)
1071  ip40 = vlib_buffer_get_current (b0);
1072  else
1073  ip60 = vlib_buffer_get_current (b0);
1074 
1075  /* Setup packet for next IP feature */
1076  vnet_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_RX], &next0,
1077  b0);
1078 
1079  if (is_ip4)
1080  proto0 = ip40->protocol;
1081  else
1082  proto0 = ip60->protocol;
1083 
1084  if (proto0 != IP_PROTOCOL_UDP)
1085  goto exit; /* not UDP packet */
1086 
1087  if (is_ip4)
1088  udp0 = ip4_next_header (ip40);
1089  else
1090  udp0 = ip6_next_header (ip60);
1091 
1092  if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_VXLAN_GPE))
1093  goto exit; /* not VXLAN packet */
1094 
1095  /* Validate DIP against VTEPs */
1096  if (is_ip4)
1097  {
1098  if (addr4.as_u32 != ip40->dst_address.as_u32)
1099  {
1100  if (!hash_get (ngm->vtep4, ip40->dst_address.as_u32))
1101  goto exit; /* no local VTEP for VXLAN packet */
1102  addr4 = ip40->dst_address;
1103  }
1104  }
1105  else
1106  {
1107  if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
1108  {
1109  if (!hash_get_mem (ngm->vtep6, &ip60->dst_address))
1110  goto exit; /* no local VTEP for VXLAN packet */
1111  addr6 = ip60->dst_address;
1112  }
1113  }
1114 
1115  flags0 = b0->flags;
1116  good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1117 
1118  /* Don't verify UDP checksum for packets with explicit zero checksum. */
1119  good_udp0 |= udp0->checksum == 0;
1120 
1121  /* Verify UDP length */
1122  if (is_ip4)
1123  ip_len0 = clib_net_to_host_u16 (ip40->length);
1124  else
1125  ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
1126  udp_len0 = clib_net_to_host_u16 (udp0->length);
1127  len_diff0 = ip_len0 - udp_len0;
1128 
1129  /* Verify UDP checksum */
1130  if (PREDICT_FALSE (!good_udp0))
1131  {
1132  if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
1133  {
1134  if (is_ip4)
1135  flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
1136  else
1137  flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
1138  good_udp0 =
1139  (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
1140  }
1141  }
1142 
1143  if (is_ip4)
1144  {
1145  error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
1146  error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
1147  }
1148  else
1149  {
1150  error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
1151  error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
1152  }
1153 
1154  next0 = error0 ?
1156  b0->error = error0 ? error_node->errors[error0] : 0;
1157 
1158  /* vxlan_gpe-input node expect current at VXLAN header */
1159  if (is_ip4)
1160  vlib_buffer_advance (b0,
1161  sizeof (ip4_header_t) +
1162  sizeof (udp_header_t));
1163  else
1164  vlib_buffer_advance (b0,
1165  sizeof (ip6_header_t) +
1166  sizeof (udp_header_t));
1167 
1168  exit:
1169  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1170  to_next, n_left_to_next,
1171  bi0, next0);
1172  }
1173 
1174  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1175  }
1176 
1177  return frame->n_vectors;
1178 }
1179 
1180 static uword
1182  vlib_node_runtime_t * node, vlib_frame_t * frame)
1183 {
1184  return ip_vxlan_gpe_bypass_inline (vm, node, frame, /* is_ip4 */ 1);
1185 }
1186 
1187 /* *INDENT-OFF* */
1189  .function = ip4_vxlan_gpe_bypass,
1190  .name = "ip4-vxlan-gpe-bypass",
1191  .vector_size = sizeof (u32),
1192 
1193  .n_next_nodes = IP_VXLAN_BYPASS_N_NEXT,
1194  .next_nodes = {
1195  [IP_VXLAN_BYPASS_NEXT_DROP] = "error-drop",
1196  [IP_VXLAN_BYPASS_NEXT_VXLAN] = "vxlan4-gpe-input",
1197  },
1198 
1199  .format_buffer = format_ip4_header,
1200  .format_trace = format_ip4_forward_next_trace,
1201 };
1202 /* *INDENT-ON* */
1203 
1205 /* Dummy init function to get us linked in. */
1207 {
1208  return 0;
1209 }
1210 
1212 
1213 static uword
1215  vlib_node_runtime_t * node, vlib_frame_t * frame)
1216 {
1217  return ip_vxlan_gpe_bypass_inline (vm, node, frame, /* is_ip4 */ 0);
1218 }
1219 
1220 /* *INDENT-OFF* */
1222  .function = ip6_vxlan_gpe_bypass,
1223  .name = "ip6-vxlan-gpe-bypass",
1224  .vector_size = sizeof (u32),
1225 
1226  .n_next_nodes = IP_VXLAN_BYPASS_N_NEXT,
1227  .next_nodes = {
1228  [IP_VXLAN_BYPASS_NEXT_DROP] = "error-drop",
1229  [IP_VXLAN_BYPASS_NEXT_VXLAN] = "vxlan6-gpe-input",
1230  },
1231 
1232  .format_buffer = format_ip6_header,
1233  .format_trace = format_ip6_forward_next_trace,
1234 };
1235 /* *INDENT-ON* */
1236 
1238 /* Dummy init function to get us linked in. */
1240 {
1241  return 0;
1242 }
1243 
1245 
1246 /*
1247  * fd.io coding-style-patch-verification: ON
1248  *
1249  * Local Variables:
1250  * eval: (c-set-style "gnu")
1251  * End:
1252  */
uword * vxlan6_gpe_tunnel_by_key
lookup IPv6 VXLAN GPE tunnel by key
Definition: vxlan_gpe.h:204
#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:211
u8 runtime_data[0]
Function dependent node-runtime data.
Definition: node.h:464
vlib_node_registration_t vxlan4_gpe_input_node
(constructor) VLIB_REGISTER_NODE (vxlan4_gpe_input_node)
Definition: decap.c:730
vnet_interface_main_t interface_main
Definition: vnet.h:56
format_function_t format_ip4_header
Definition: format.h:86
Struct for VXLAN GPE decap packet tracing.
Definition: decap.c:33
vlib_node_registration_t vxlan_gpe_input_node
Definition: decap.c:27
VXLAN GPE definitions.
vlib_node_registration_t vxlan6_gpe_input_node
(constructor) VLIB_REGISTER_NODE (vxlan6_gpe_input_node)
Definition: decap.c:755
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:415
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:107
vnet_main_t * vnet_main
State convenience vnet_main_t.
Definition: vxlan_gpe.h:221
static char * vxlan_gpe_error_strings[]
VXLAN GPE error strings.
Definition: decap.c:722
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
#define always_inline
Definition: clib.h:92
ip4_address_t dst_address
Definition: ip4_packet.h:164
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:718
static uword ip6_address_is_equal(ip6_address_t *a, ip6_address_t *b)
Definition: ip6_packet.h:209
int i32
Definition: types.h:81
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:191
static void * ip4_next_header(ip4_header_t *i)
Definition: ip4_packet.h:233
void vxlan_gpe_register_decap_protocol(u8 protocol_id, uword next_node_index)
Definition: decap.c:685
#define hash_get(h, key)
Definition: hash.h:248
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:461
vlib_node_registration_t ip4_input_node
Global ip4 input node.
Definition: ip4_input.c:277
static uword vxlan_gpe_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, u8 is_ip4)
Common processing for IPv4 and IPv6 VXLAN GPE decap dispatch functions.
Definition: decap.c:108
Struct for VXLAN GPE tunnel.
Definition: vxlan_gpe.h:102
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:209
vxlan_gpe_main_t vxlan_gpe_main
Definition: vxlan_gpe.c:45
#define PREDICT_FALSE(x)
Definition: clib.h:105
u32 ip4_tcp_udp_validate_checksum(vlib_main_t *vm, vlib_buffer_t *p0)
Definition: ip4_forward.c:1099
#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
static_always_inline void vnet_feature_next(u32 sw_if_index, u32 *next0, vlib_buffer_t *b0)
Definition: feature.h:221
#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
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:130
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1166
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:143
u16 n_vectors
Definition: node.h:344
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:221
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:74
vlib_main_t * vm
Definition: buffer.c:294
static void ip6_address_set_zero(ip6_address_t *a)
Definition: ip6_packet.h:244
clib_error_t * ip4_vxlan_gpe_bypass_init(vlib_main_t *vm)
Definition: decap.c:1206
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
static uword vxlan4_gpe_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Graph processing dispatch function for IPv4 VXLAN GPE.
Definition: decap.c:677
#define ARRAY_LEN(x)
Definition: clib.h:59
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
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:369
#define foreach_vxlan_gpe_input_next
next nodes for VXLAN GPE input
Definition: vxlan_gpe.h:171
ip_vxan_bypass_next_t
Definition: decap.c:864
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:456
unsigned int u32
Definition: types.h:88
static u8 * format_vxlan_gpe_with_length(u8 *s, va_list *args)
Tracing function for VXLAN GPE packet decapsulation including length.
Definition: decap.c:79
Struct for VXLAN GPE node state.
Definition: vxlan_gpe.h:196
vlib_node_registration_t ip4_vxlan_gpe_bypass_node
(constructor) VLIB_REGISTER_NODE (ip4_vxlan_gpe_bypass_node)
Definition: decap.c:1188
clib_error_t * ip6_vxlan_gpe_bypass_init(vlib_main_t *vm)
Definition: decap.c:1239
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:222
uword decap_next_node_list[VXLAN_GPE_PROTOCOL_MAX]
List of next nodes for the decap indexed on protocol.
Definition: vxlan_gpe.h:224
format_function_t format_ip6_header
Definition: format.h:98
vxlan_gpe_tunnel_t * tunnels
vector of encap tunnel instances
Definition: vxlan_gpe.h:199
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
struct _vlib_node_registration vlib_node_registration_t
void vxlan_gpe_unregister_decap_protocol(u8 protocol_id, uword next_node_index)
Definition: decap.c:693
Definition: defs.h:47
uword * vxlan4_gpe_tunnel_by_key
lookup IPv4 VXLAN GPE tunnel by key
Definition: vxlan_gpe.h:202
u32 decap_fib_index
FIB indices - inner IP packet lookup here.
Definition: vxlan_gpe.h:126
u16 payload_length
Definition: ip6_packet.h:333
i64 word
Definition: types.h:111
u32 ip6_tcp_udp_icmp_validate_checksum(vlib_main_t *vm, vlib_buffer_t *p0)
Definition: ip6_forward.c:941
unsigned char u8
Definition: types.h:56
static void vnet_update_l2_len(vlib_buffer_t *b)
Definition: l2_input.h:217
void ip4_forward_next_trace(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, vlib_rx_or_tx_t which_adj_index)
Definition: ip4_forward.c:953
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:267
u8 * format_ip4_forward_next_trace(u8 *s, va_list *args)
Definition: ip4_forward.c:905
vlib_node_registration_t ip6_vxlan_gpe_bypass_node
(constructor) VLIB_REGISTER_NODE (ip6_vxlan_gpe_bypass_node)
Definition: decap.c:1221
#define hash_get_mem(h, key)
Definition: hash.h:268
#define vnet_buffer(b)
Definition: buffer.h:372
VLIB_NODE_FUNCTION_MULTIARCH(l2t_decap_node, l2t_decap_node_fn)
u32 sw_if_index
vnet intfc sw_if_index
Definition: vxlan_gpe.h:134
u8 data[0]
Packet data.
Definition: buffer.h:179
u16 flags
Copy of main node flags.
Definition: node.h:450
static uword vxlan6_gpe_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Graph processing dispatch function for IPv6 VXLAN GPE.
Definition: decap.c:713
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:259
static uword ip6_vxlan_gpe_bypass(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: decap.c:1214
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
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
static u8 * format_vxlan_gpe_rx_trace(u8 *s, va_list *args)
Tracing function for VXLAN GPE packet decapsulation.
Definition: decap.c:50
static uword ip4_vxlan_gpe_bypass(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: decap.c:1181
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
Definition: defs.h:46
ip6_address_t dst_address
Definition: ip6_packet.h:342
static uword ip_vxlan_gpe_bypass_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, u32 is_ip4)
Definition: decap.c:786
u8 * format_ip6_forward_next_trace(u8 *s, va_list *args)
Definition: ip6_forward.c:723