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Vector Packet Processing
decap.c
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1 /*
2  * decap.c: vxlan gbp tunnel decap packet processing
3  *
4  * Copyright (c) 2018 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/pg/pg.h>
21 
24 
25 typedef struct
26 {
34 
35 static u8 *
36 format_vxlan_gbp_rx_trace (u8 * s, va_list * args)
37 {
38  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
39  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
40  vxlan_gbp_rx_trace_t *t = va_arg (*args, vxlan_gbp_rx_trace_t *);
41 
42  if (t->tunnel_index == ~0)
43  return format (s,
44  "VXLAN_GBP decap error - tunnel for vni %d does not exist",
45  t->vni);
46  return format (s,
47  "VXLAN_GBP decap from vxlan_gbp_tunnel%d vni %d sclass %d"
48  " flags %U next %d error %d",
49  t->tunnel_index, t->vni, t->sclass,
51  t->next_index, t->error);
52 }
53 
56 {
57  u32 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
58  if (sw_if_index != (u32) ~ 0)
59  return sw_if_index;
60 
61  u32 *fib_index_by_sw_if_index = is_ip4 ?
63  sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
64 
65  return vec_elt (fib_index_by_sw_if_index, sw_if_index);
66 }
67 
69 
72  u32 fib_index, ip4_header_t * ip4_0,
73  vxlan_gbp_header_t * vxlan_gbp0,
74  vxlan_gbp_tunnel_t ** stats_t0)
75 {
76  /* Make sure VXLAN_GBP tunnel exist according to packet SIP and VNI */
78  key4.key[1] = ((u64) fib_index << 32) | vxlan_gbp0->vni_reserved;
79 
80  if (PREDICT_FALSE (key4.key[1] != cache->key[1] ||
81  ip4_0->src_address.as_u32 != (u32) cache->key[0]))
82  {
83  key4.key[0] = ip4_0->src_address.as_u32;
84  int rv = clib_bihash_search_inline_16_8 (&vxm->vxlan4_gbp_tunnel_by_key,
85  &key4);
86  if (PREDICT_FALSE (rv != 0))
87  return 0;
88 
89  *cache = key4;
90  }
92 
93  /* Validate VXLAN_GBP tunnel SIP against packet DIP */
94  if (PREDICT_TRUE (ip4_0->dst_address.as_u32 == t0->src.ip4.as_u32))
95  *stats_t0 = t0;
96  else
97  {
98  /* try multicast */
100  return 0;
101 
102  key4.key[0] = ip4_0->dst_address.as_u32;
103  /* Make sure mcast VXLAN_GBP tunnel exist by packet DIP and VNI */
104  int rv = clib_bihash_search_inline_16_8 (&vxm->vxlan4_gbp_tunnel_by_key,
105  &key4);
106  if (PREDICT_FALSE (rv != 0))
107  return 0;
108 
109  *stats_t0 = pool_elt_at_index (vxm->tunnels, key4.value);
110  }
111 
112  return t0;
113 }
114 
116 
119  u32 fib_index, ip6_header_t * ip6_0,
120  vxlan_gbp_header_t * vxlan_gbp0,
121  vxlan_gbp_tunnel_t ** stats_t0)
122 {
123  /* Make sure VXLAN_GBP tunnel exist according to packet SIP and VNI */
124  vxlan6_gbp_tunnel_key_t key6 = {
125  .key = {
126  [0] = ip6_0->src_address.as_u64[0],
127  [1] = ip6_0->src_address.as_u64[1],
128  [2] = (((u64) fib_index) << 32) | vxlan_gbp0->vni_reserved,
129  }
130  };
131 
132  if (PREDICT_FALSE
133  (clib_bihash_key_compare_24_8 (key6.key, cache->key) == 0))
134  {
135  int rv = clib_bihash_search_inline_24_8 (&vxm->vxlan6_gbp_tunnel_by_key,
136  &key6);
137  if (PREDICT_FALSE (rv != 0))
138  return 0;
139 
140  *cache = key6;
141  }
142  vxlan_gbp_tunnel_t *t0 = pool_elt_at_index (vxm->tunnels, cache->value);
143 
144  /* Validate VXLAN_GBP tunnel SIP against packet DIP */
145  if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address, &t0->src.ip6)))
146  *stats_t0 = t0;
147  else
148  {
149  /* try multicast */
151  return 0;
152 
153  /* Make sure mcast VXLAN_GBP tunnel exist by packet DIP and VNI */
154  key6.key[0] = ip6_0->dst_address.as_u64[0];
155  key6.key[1] = ip6_0->dst_address.as_u64[1];
156  int rv = clib_bihash_search_inline_24_8 (&vxm->vxlan6_gbp_tunnel_by_key,
157  &key6);
158  if (PREDICT_FALSE (rv != 0))
159  return 0;
160 
161  *stats_t0 = pool_elt_at_index (vxm->tunnels, key6.value);
162  }
163 
164  return t0;
165 }
166 
169 {
170  if (VXLAN_GBP_TUNNEL_MODE_L2 == t->mode)
171  return (VXLAN_GBP_INPUT_NEXT_L2_INPUT);
172  else
173  {
174  ethernet_header_t *e0;
175  u16 type0;
176 
177  e0 = vlib_buffer_get_current (b0);
178  vlib_buffer_advance (b0, sizeof (*e0));
179  type0 = clib_net_to_host_u16 (e0->type);
180  switch (type0)
181  {
182  case ETHERNET_TYPE_IP4:
183  return (VXLAN_GBP_INPUT_NEXT_IP4_INPUT);
184  case ETHERNET_TYPE_IP6:
185  return (VXLAN_GBP_INPUT_NEXT_IP6_INPUT);
186  }
187  }
188  return (VXLAN_GBP_INPUT_NEXT_DROP);
189 }
190 
193  vlib_node_runtime_t * node,
194  vlib_frame_t * from_frame, u8 is_ip4)
195 {
197  vnet_main_t *vnm = vxm->vnet_main;
199  vlib_combined_counter_main_t *rx_counter =
201  vlib_combined_counter_main_t *drop_counter =
203  last_tunnel_cache4 last4;
204  last_tunnel_cache6 last6;
205  u32 pkts_decapsulated = 0;
206  u32 thread_index = vlib_get_thread_index ();
207 
208  if (is_ip4)
209  clib_memset (&last4, 0xff, sizeof last4);
210  else
211  clib_memset (&last6, 0xff, sizeof last6);
212 
213  u32 next_index = node->cached_next_index;
214 
215  u32 *from = vlib_frame_vector_args (from_frame);
216  u32 n_left_from = from_frame->n_vectors;
217 
218  while (n_left_from > 0)
219  {
220  u32 *to_next, n_left_to_next;
221  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
222 
223  while (n_left_from >= 4 && n_left_to_next >= 2)
224  {
225  /* Prefetch next iteration. */
226  {
227  vlib_buffer_t *p2, *p3;
228 
229  p2 = vlib_get_buffer (vm, from[2]);
230  p3 = vlib_get_buffer (vm, from[3]);
231 
232  vlib_prefetch_buffer_header (p2, LOAD);
233  vlib_prefetch_buffer_header (p3, LOAD);
234 
235  CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
236  CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
237  }
238 
239  u32 bi0 = to_next[0] = from[0];
240  u32 bi1 = to_next[1] = from[1];
241  from += 2;
242  to_next += 2;
243  n_left_to_next -= 2;
244  n_left_from -= 2;
245 
246  vlib_buffer_t *b0, *b1;
247  b0 = vlib_get_buffer (vm, bi0);
248  b1 = vlib_get_buffer (vm, bi1);
249 
250  /* udp leaves current_data pointing at the vxlan_gbp header */
251  void *cur0 = vlib_buffer_get_current (b0);
252  void *cur1 = vlib_buffer_get_current (b1);
253  vxlan_gbp_header_t *vxlan_gbp0 = cur0;
254  vxlan_gbp_header_t *vxlan_gbp1 = cur1;
255 
256  ip4_header_t *ip4_0, *ip4_1;
257  ip6_header_t *ip6_0, *ip6_1;
258  if (is_ip4)
259  {
260  ip4_0 = cur0 - sizeof (udp_header_t) - sizeof (ip4_header_t);
261  ip4_1 = cur1 - sizeof (udp_header_t) - sizeof (ip4_header_t);
262  }
263  else
264  {
265  ip6_0 = cur0 - sizeof (udp_header_t) - sizeof (ip6_header_t);
266  ip6_1 = cur1 - sizeof (udp_header_t) - sizeof (ip6_header_t);
267  }
268 
269  u32 fi0 = buf_fib_index (b0, is_ip4);
270  u32 fi1 = buf_fib_index (b1, is_ip4);
271 
272  vxlan_gbp_tunnel_t *t0, *stats_t0 = 0;
273  vxlan_gbp_tunnel_t *t1, *stats_t1 = 0;
274  if (is_ip4)
275  {
276  t0 =
277  vxlan4_gbp_find_tunnel (vxm, &last4, fi0, ip4_0, vxlan_gbp0,
278  &stats_t0);
279  t1 =
280  vxlan4_gbp_find_tunnel (vxm, &last4, fi1, ip4_1, vxlan_gbp1,
281  &stats_t1);
282  }
283  else
284  {
285  t0 =
286  vxlan6_gbp_find_tunnel (vxm, &last6, fi0, ip6_0, vxlan_gbp0,
287  &stats_t0);
288  t1 =
289  vxlan6_gbp_find_tunnel (vxm, &last6, fi1, ip6_1, vxlan_gbp1,
290  &stats_t1);
291  }
292 
293  u32 len0 = vlib_buffer_length_in_chain (vm, b0);
294  u32 len1 = vlib_buffer_length_in_chain (vm, b1);
295 
296  vxlan_gbp_input_next_t next0, next1;
297  u8 error0 = 0, error1 = 0;
298  u8 flags0 = vxlan_gbp_get_flags (vxlan_gbp0);
299  u8 flags1 = vxlan_gbp_get_flags (vxlan_gbp1);
300  /* Required to make the l2 tag push / pop code work on l2 subifs */
301  /* pop vxlan_gbp */
302  vlib_buffer_advance (b0, sizeof *vxlan_gbp0);
303  vlib_buffer_advance (b1, sizeof *vxlan_gbp1);
304 
305  /* Validate VXLAN_GBP tunnel encap-fib index against packet */
306  if (PREDICT_FALSE
307  (t0 == 0 || flags0 != (VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G)))
308  {
309  if (t0 != 0
310  && flags0 != (VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G))
311  {
312  error0 = VXLAN_GBP_ERROR_BAD_FLAGS;
314  (drop_counter, thread_index, stats_t0->sw_if_index, 1,
315  len0);
316  next0 = VXLAN_GBP_INPUT_NEXT_DROP;
317  }
318  else
319  {
320  error0 = VXLAN_GBP_ERROR_NO_SUCH_TUNNEL;
321  next0 = VXLAN_GBP_INPUT_NEXT_NO_TUNNEL;
322  }
323  b0->error = node->errors[error0];
324  }
325  else
326  {
327  next0 = vxlan_gbp_tunnel_get_next (t0, b0);
328 
329  /* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
330  vnet_buffer (b0)->sw_if_index[VLIB_RX] = t0->sw_if_index;
332  (rx_counter, thread_index, stats_t0->sw_if_index, 1, len0);
333  pkts_decapsulated++;
334  }
335 
336  vnet_buffer2 (b0)->gbp.flags = vxlan_gbp_get_gpflags (vxlan_gbp0);
337  vnet_buffer2 (b0)->gbp.src_epg = vxlan_gbp_get_sclass (vxlan_gbp0);
338 
339 
340  if (PREDICT_FALSE
341  (t1 == 0 || flags1 != (VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G)))
342  {
343  if (t1 != 0
344  && flags1 != (VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G))
345  {
346  error1 = VXLAN_GBP_ERROR_BAD_FLAGS;
348  (drop_counter, thread_index, stats_t1->sw_if_index, 1,
349  len1);
350  next1 = VXLAN_GBP_INPUT_NEXT_DROP;
351  }
352  else
353  {
354  error1 = VXLAN_GBP_ERROR_NO_SUCH_TUNNEL;
355  next1 = VXLAN_GBP_INPUT_NEXT_NO_TUNNEL;
356  }
357  b1->error = node->errors[error1];
358  }
359  else
360  {
361  next1 = vxlan_gbp_tunnel_get_next (t1, b1);
362 
363  /* Set packet input sw_if_index to unicast VXLAN_GBP tunnel for learning */
364  vnet_buffer (b1)->sw_if_index[VLIB_RX] = t1->sw_if_index;
365  pkts_decapsulated++;
366 
368  (rx_counter, thread_index, stats_t1->sw_if_index, 1, len1);
369  }
370 
371  vnet_buffer2 (b1)->gbp.flags = vxlan_gbp_get_gpflags (vxlan_gbp1);
372  vnet_buffer2 (b1)->gbp.src_epg = vxlan_gbp_get_sclass (vxlan_gbp1);
373 
374  vnet_update_l2_len (b0);
375  vnet_update_l2_len (b1);
376 
377  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
378  {
380  vlib_add_trace (vm, node, b0, sizeof (*tr));
381  tr->next_index = next0;
382  tr->error = error0;
383  tr->tunnel_index = t0 == 0 ? ~0 : t0 - vxm->tunnels;
384  tr->vni = vxlan_gbp_get_vni (vxlan_gbp0);
385  tr->sclass = vxlan_gbp_get_sclass (vxlan_gbp0);
386  tr->flags = vxlan_gbp_get_gpflags (vxlan_gbp0);
387  }
388  if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
389  {
391  vlib_add_trace (vm, node, b1, sizeof (*tr));
392  tr->next_index = next1;
393  tr->error = error1;
394  tr->tunnel_index = t1 == 0 ? ~0 : t1 - vxm->tunnels;
395  tr->vni = vxlan_gbp_get_vni (vxlan_gbp1);
396  tr->sclass = vxlan_gbp_get_sclass (vxlan_gbp1);
397  tr->flags = vxlan_gbp_get_gpflags (vxlan_gbp1);
398  }
399 
400  vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
401  to_next, n_left_to_next,
402  bi0, bi1, next0, next1);
403  }
404 
405  while (n_left_from > 0 && n_left_to_next > 0)
406  {
407  u32 bi0 = to_next[0] = from[0];
408  from += 1;
409  to_next += 1;
410  n_left_from -= 1;
411  n_left_to_next -= 1;
412 
413  vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
414 
415  /* udp leaves current_data pointing at the vxlan_gbp header */
416  void *cur0 = vlib_buffer_get_current (b0);
417  vxlan_gbp_header_t *vxlan_gbp0 = cur0;
418  ip4_header_t *ip4_0;
419  ip6_header_t *ip6_0;
420  if (is_ip4)
421  ip4_0 = cur0 - sizeof (udp_header_t) - sizeof (ip4_header_t);
422  else
423  ip6_0 = cur0 - sizeof (udp_header_t) - sizeof (ip6_header_t);
424 
425  u32 fi0 = buf_fib_index (b0, is_ip4);
426 
427  vxlan_gbp_tunnel_t *t0, *stats_t0 = 0;
428  if (is_ip4)
429  t0 =
430  vxlan4_gbp_find_tunnel (vxm, &last4, fi0, ip4_0, vxlan_gbp0,
431  &stats_t0);
432  else
433  t0 =
434  vxlan6_gbp_find_tunnel (vxm, &last6, fi0, ip6_0, vxlan_gbp0,
435  &stats_t0);
436 
437  uword len0 = vlib_buffer_length_in_chain (vm, b0);
438 
440  u8 error0 = 0;
441  u8 flags0 = vxlan_gbp_get_flags (vxlan_gbp0);
442 
443  /* pop (ip, udp, vxlan_gbp) */
444  vlib_buffer_advance (b0, sizeof (*vxlan_gbp0));
445  /* Validate VXLAN_GBP tunnel encap-fib index against packet */
446  if (PREDICT_FALSE
447  (t0 == 0 || flags0 != (VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G)))
448  {
449  if (t0 != 0
450  && flags0 != (VXLAN_GBP_FLAGS_I | VXLAN_GBP_FLAGS_G))
451  {
452  error0 = VXLAN_GBP_ERROR_BAD_FLAGS;
454  (drop_counter, thread_index, stats_t0->sw_if_index, 1,
455  len0);
456  next0 = VXLAN_GBP_INPUT_NEXT_DROP;
457  }
458  else
459  {
460  error0 = VXLAN_GBP_ERROR_NO_SUCH_TUNNEL;
461  next0 = VXLAN_GBP_INPUT_NEXT_NO_TUNNEL;
462  }
463  b0->error = node->errors[error0];
464  }
465  else
466  {
467  next0 = vxlan_gbp_tunnel_get_next (t0, b0);
468  /* Set packet input sw_if_index to unicast VXLAN_GBP tunnel for learning */
469  vnet_buffer (b0)->sw_if_index[VLIB_RX] = t0->sw_if_index;
470  pkts_decapsulated++;
471 
473  (rx_counter, thread_index, stats_t0->sw_if_index, 1, len0);
474  }
475  vnet_buffer2 (b0)->gbp.flags = vxlan_gbp_get_gpflags (vxlan_gbp0);
476  vnet_buffer2 (b0)->gbp.src_epg = vxlan_gbp_get_sclass (vxlan_gbp0);
477 
478  /* Required to make the l2 tag push / pop code work on l2 subifs */
479  vnet_update_l2_len (b0);
480 
481  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
482  {
484  = vlib_add_trace (vm, node, b0, sizeof (*tr));
485  tr->next_index = next0;
486  tr->error = error0;
487  tr->tunnel_index = t0 == 0 ? ~0 : t0 - vxm->tunnels;
488  tr->vni = vxlan_gbp_get_vni (vxlan_gbp0);
489  tr->sclass = vxlan_gbp_get_sclass (vxlan_gbp0);
490  tr->flags = vxlan_gbp_get_gpflags (vxlan_gbp0);
491  }
492  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
493  to_next, n_left_to_next,
494  bi0, next0);
495  }
496 
497  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
498  }
499  /* Do we still need this now that tunnel tx stats is kept? */
500  u32 node_idx =
501  is_ip4 ? vxlan4_gbp_input_node.index : vxlan6_gbp_input_node.index;
502  vlib_node_increment_counter (vm, node_idx, VXLAN_GBP_ERROR_DECAPSULATED,
503  pkts_decapsulated);
504 
505  return from_frame->n_vectors;
506 }
507 
508 static uword
510  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
511 {
512  return vxlan_gbp_input (vm, node, from_frame, /* is_ip4 */ 1);
513 }
514 
515 static uword
517  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
518 {
519  return vxlan_gbp_input (vm, node, from_frame, /* is_ip4 */ 0);
520 }
521 
522 static char *vxlan_gbp_error_strings[] = {
523 #define vxlan_gbp_error(n,s) s,
525 #undef vxlan_gbp_error
526 #undef _
527 };
528 
529 /* *INDENT-OFF* */
531 {
532  .function = vxlan4_gbp_input,
533  .name = "vxlan4-gbp-input",
534  .vector_size = sizeof (u32),
535  .n_errors = VXLAN_GBP_N_ERROR,
536  .error_strings = vxlan_gbp_error_strings,
537  .n_next_nodes = VXLAN_GBP_INPUT_N_NEXT,
538  .format_trace = format_vxlan_gbp_rx_trace,
539  .next_nodes = {
540 #define _(s,n) [VXLAN_GBP_INPUT_NEXT_##s] = n,
542 #undef _
543  },
544 };
546 
548 {
549  .function = vxlan6_gbp_input,
550  .name = "vxlan6-gbp-input",
551  .vector_size = sizeof (u32),
552  .n_errors = VXLAN_GBP_N_ERROR,
553  .error_strings = vxlan_gbp_error_strings,
554  .n_next_nodes = VXLAN_GBP_INPUT_N_NEXT,
555  .next_nodes = {
556 #define _(s,n) [VXLAN_GBP_INPUT_NEXT_##s] = n,
558 #undef _
559  },
560  .format_trace = format_vxlan_gbp_rx_trace,
561 };
563 /* *INDENT-ON* */
564 
565 typedef enum
566 {
571 
574  vlib_node_runtime_t * node,
575  vlib_frame_t * frame, u32 is_ip4)
576 {
578  u32 *from, *to_next, n_left_from, n_left_to_next, next_index;
579  vlib_node_runtime_t *error_node =
581  ip4_address_t addr4; /* last IPv4 address matching a local VTEP address */
582  ip6_address_t addr6; /* last IPv6 address matching a local VTEP address */
583 
584  from = vlib_frame_vector_args (frame);
585  n_left_from = frame->n_vectors;
586  next_index = node->cached_next_index;
587 
588  if (node->flags & VLIB_NODE_FLAG_TRACE)
589  ip4_forward_next_trace (vm, node, frame, VLIB_TX);
590 
591  if (is_ip4)
592  addr4.data_u32 = ~0;
593  else
594  ip6_address_set_zero (&addr6);
595 
596  while (n_left_from > 0)
597  {
598  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
599 
600  while (n_left_from >= 4 && n_left_to_next >= 2)
601  {
602  vlib_buffer_t *b0, *b1;
603  ip4_header_t *ip40, *ip41;
604  ip6_header_t *ip60, *ip61;
605  udp_header_t *udp0, *udp1;
606  u32 bi0, ip_len0, udp_len0, flags0, next0;
607  u32 bi1, ip_len1, udp_len1, flags1, next1;
608  i32 len_diff0, len_diff1;
609  u8 error0, good_udp0, proto0;
610  u8 error1, good_udp1, proto1;
611 
612  /* Prefetch next iteration. */
613  {
614  vlib_buffer_t *p2, *p3;
615 
616  p2 = vlib_get_buffer (vm, from[2]);
617  p3 = vlib_get_buffer (vm, from[3]);
618 
619  vlib_prefetch_buffer_header (p2, LOAD);
620  vlib_prefetch_buffer_header (p3, LOAD);
621 
622  CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
623  CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
624  }
625 
626  bi0 = to_next[0] = from[0];
627  bi1 = to_next[1] = from[1];
628  from += 2;
629  n_left_from -= 2;
630  to_next += 2;
631  n_left_to_next -= 2;
632 
633  b0 = vlib_get_buffer (vm, bi0);
634  b1 = vlib_get_buffer (vm, bi1);
635  if (is_ip4)
636  {
637  ip40 = vlib_buffer_get_current (b0);
638  ip41 = vlib_buffer_get_current (b1);
639  }
640  else
641  {
642  ip60 = vlib_buffer_get_current (b0);
643  ip61 = vlib_buffer_get_current (b1);
644  }
645 
646  /* Setup packet for next IP feature */
647  vnet_feature_next (&next0, b0);
648  vnet_feature_next (&next1, b1);
649 
650  if (is_ip4)
651  {
652  /* Treat IP frag packets as "experimental" protocol for now
653  until support of IP frag reassembly is implemented */
654  proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
655  proto1 = ip4_is_fragment (ip41) ? 0xfe : ip41->protocol;
656  }
657  else
658  {
659  proto0 = ip60->protocol;
660  proto1 = ip61->protocol;
661  }
662 
663  /* Process packet 0 */
664  if (proto0 != IP_PROTOCOL_UDP)
665  goto exit0; /* not UDP packet */
666 
667  if (is_ip4)
668  udp0 = ip4_next_header (ip40);
669  else
670  udp0 = ip6_next_header (ip60);
671 
672  if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan_gbp))
673  goto exit0; /* not VXLAN_GBP packet */
674 
675  /* Validate DIP against VTEPs */
676  if (is_ip4)
677  {
678  if (addr4.as_u32 != ip40->dst_address.as_u32)
679  {
680  if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
681  goto exit0; /* no local VTEP for VXLAN_GBP packet */
682  addr4 = ip40->dst_address;
683  }
684  }
685  else
686  {
687  if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
688  {
689  if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
690  goto exit0; /* no local VTEP for VXLAN_GBP packet */
691  addr6 = ip60->dst_address;
692  }
693  }
694 
695  flags0 = b0->flags;
696  good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
697 
698  /* Don't verify UDP checksum for packets with explicit zero checksum. */
699  good_udp0 |= udp0->checksum == 0;
700 
701  /* Verify UDP length */
702  if (is_ip4)
703  ip_len0 = clib_net_to_host_u16 (ip40->length);
704  else
705  ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
706  udp_len0 = clib_net_to_host_u16 (udp0->length);
707  len_diff0 = ip_len0 - udp_len0;
708 
709  /* Verify UDP checksum */
710  if (PREDICT_FALSE (!good_udp0))
711  {
712  if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
713  {
714  if (is_ip4)
715  flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
716  else
717  flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
718  good_udp0 =
719  (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
720  }
721  }
722 
723  if (is_ip4)
724  {
725  error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
726  error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
727  }
728  else
729  {
730  error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
731  error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
732  }
733 
734  next0 = error0 ?
737  b0->error = error0 ? error_node->errors[error0] : 0;
738 
739  /* vxlan-gbp-input node expect current at VXLAN_GBP header */
740  if (is_ip4)
742  sizeof (ip4_header_t) +
743  sizeof (udp_header_t));
744  else
746  sizeof (ip6_header_t) +
747  sizeof (udp_header_t));
748 
749  exit0:
750  /* Process packet 1 */
751  if (proto1 != IP_PROTOCOL_UDP)
752  goto exit1; /* not UDP packet */
753 
754  if (is_ip4)
755  udp1 = ip4_next_header (ip41);
756  else
757  udp1 = ip6_next_header (ip61);
758 
759  if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan_gbp))
760  goto exit1; /* not VXLAN_GBP packet */
761 
762  /* Validate DIP against VTEPs */
763  if (is_ip4)
764  {
765  if (addr4.as_u32 != ip41->dst_address.as_u32)
766  {
767  if (!hash_get (vxm->vtep4, ip41->dst_address.as_u32))
768  goto exit1; /* no local VTEP for VXLAN_GBP packet */
769  addr4 = ip41->dst_address;
770  }
771  }
772  else
773  {
774  if (!ip6_address_is_equal (&addr6, &ip61->dst_address))
775  {
776  if (!hash_get_mem (vxm->vtep6, &ip61->dst_address))
777  goto exit1; /* no local VTEP for VXLAN_GBP packet */
778  addr6 = ip61->dst_address;
779  }
780  }
781 
782  flags1 = b1->flags;
783  good_udp1 = (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
784 
785  /* Don't verify UDP checksum for packets with explicit zero checksum. */
786  good_udp1 |= udp1->checksum == 0;
787 
788  /* Verify UDP length */
789  if (is_ip4)
790  ip_len1 = clib_net_to_host_u16 (ip41->length);
791  else
792  ip_len1 = clib_net_to_host_u16 (ip61->payload_length);
793  udp_len1 = clib_net_to_host_u16 (udp1->length);
794  len_diff1 = ip_len1 - udp_len1;
795 
796  /* Verify UDP checksum */
797  if (PREDICT_FALSE (!good_udp1))
798  {
799  if ((flags1 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
800  {
801  if (is_ip4)
802  flags1 = ip4_tcp_udp_validate_checksum (vm, b1);
803  else
804  flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, b1);
805  good_udp1 =
806  (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
807  }
808  }
809 
810  if (is_ip4)
811  {
812  error1 = good_udp1 ? 0 : IP4_ERROR_UDP_CHECKSUM;
813  error1 = (len_diff1 >= 0) ? error1 : IP4_ERROR_UDP_LENGTH;
814  }
815  else
816  {
817  error1 = good_udp1 ? 0 : IP6_ERROR_UDP_CHECKSUM;
818  error1 = (len_diff1 >= 0) ? error1 : IP6_ERROR_UDP_LENGTH;
819  }
820 
821  next1 = error1 ?
824  b1->error = error1 ? error_node->errors[error1] : 0;
825 
826  /* vxlan_gbp-input node expect current at VXLAN_GBP header */
827  if (is_ip4)
829  sizeof (ip4_header_t) +
830  sizeof (udp_header_t));
831  else
833  sizeof (ip6_header_t) +
834  sizeof (udp_header_t));
835 
836  exit1:
837  vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
838  to_next, n_left_to_next,
839  bi0, bi1, next0, next1);
840  }
841 
842  while (n_left_from > 0 && n_left_to_next > 0)
843  {
844  vlib_buffer_t *b0;
845  ip4_header_t *ip40;
846  ip6_header_t *ip60;
847  udp_header_t *udp0;
848  u32 bi0, ip_len0, udp_len0, flags0, next0;
849  i32 len_diff0;
850  u8 error0, good_udp0, proto0;
851 
852  bi0 = to_next[0] = from[0];
853  from += 1;
854  n_left_from -= 1;
855  to_next += 1;
856  n_left_to_next -= 1;
857 
858  b0 = vlib_get_buffer (vm, bi0);
859  if (is_ip4)
860  ip40 = vlib_buffer_get_current (b0);
861  else
862  ip60 = vlib_buffer_get_current (b0);
863 
864  /* Setup packet for next IP feature */
865  vnet_feature_next (&next0, b0);
866 
867  if (is_ip4)
868  /* Treat IP4 frag packets as "experimental" protocol for now
869  until support of IP frag reassembly is implemented */
870  proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
871  else
872  proto0 = ip60->protocol;
873 
874  if (proto0 != IP_PROTOCOL_UDP)
875  goto exit; /* not UDP packet */
876 
877  if (is_ip4)
878  udp0 = ip4_next_header (ip40);
879  else
880  udp0 = ip6_next_header (ip60);
881 
882  if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan_gbp))
883  goto exit; /* not VXLAN_GBP packet */
884 
885  /* Validate DIP against VTEPs */
886  if (is_ip4)
887  {
888  if (addr4.as_u32 != ip40->dst_address.as_u32)
889  {
890  if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
891  goto exit; /* no local VTEP for VXLAN_GBP packet */
892  addr4 = ip40->dst_address;
893  }
894  }
895  else
896  {
897  if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
898  {
899  if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
900  goto exit; /* no local VTEP for VXLAN_GBP packet */
901  addr6 = ip60->dst_address;
902  }
903  }
904 
905  flags0 = b0->flags;
906  good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
907 
908  /* Don't verify UDP checksum for packets with explicit zero checksum. */
909  good_udp0 |= udp0->checksum == 0;
910 
911  /* Verify UDP length */
912  if (is_ip4)
913  ip_len0 = clib_net_to_host_u16 (ip40->length);
914  else
915  ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
916  udp_len0 = clib_net_to_host_u16 (udp0->length);
917  len_diff0 = ip_len0 - udp_len0;
918 
919  /* Verify UDP checksum */
920  if (PREDICT_FALSE (!good_udp0))
921  {
922  if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
923  {
924  if (is_ip4)
925  flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
926  else
927  flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
928  good_udp0 =
929  (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
930  }
931  }
932 
933  if (is_ip4)
934  {
935  error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
936  error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
937  }
938  else
939  {
940  error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
941  error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
942  }
943 
944  next0 = error0 ?
947  b0->error = error0 ? error_node->errors[error0] : 0;
948 
949  /* vxlan_gbp-input node expect current at VXLAN_GBP header */
950  if (is_ip4)
952  sizeof (ip4_header_t) +
953  sizeof (udp_header_t));
954  else
956  sizeof (ip6_header_t) +
957  sizeof (udp_header_t));
958 
959  exit:
960  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
961  to_next, n_left_to_next,
962  bi0, next0);
963  }
964 
965  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
966  }
967 
968  return frame->n_vectors;
969 }
970 
971 static uword
973  vlib_node_runtime_t * node, vlib_frame_t * frame)
974 {
975  return ip_vxlan_gbp_bypass_inline (vm, node, frame, /* is_ip4 */ 1);
976 }
977 
978 /* *INDENT-OFF* */
980 {
981  .function = ip4_vxlan_gbp_bypass,
982  .name = "ip4-vxlan-gbp-bypass",
983  .vector_size = sizeof (u32),
984  .n_next_nodes = IP_VXLAN_GBP_BYPASS_N_NEXT,
985  .next_nodes = {
986  [IP_VXLAN_GBP_BYPASS_NEXT_DROP] = "error-drop",
987  [IP_VXLAN_GBP_BYPASS_NEXT_VXLAN_GBP] = "vxlan4-gbp-input",
988  },
989  .format_buffer = format_ip4_header,
990  .format_trace = format_ip4_forward_next_trace,
991 };
992 
994 /* *INDENT-ON* */
995 
996 /* Dummy init function to get us linked in. */
997 clib_error_t *
999 {
1000  return 0;
1001 }
1002 
1004 
1005 static uword
1007  vlib_node_runtime_t * node, vlib_frame_t * frame)
1008 {
1009  return ip_vxlan_gbp_bypass_inline (vm, node, frame, /* is_ip4 */ 0);
1010 }
1011 
1012 /* *INDENT-OFF* */
1014 {
1015  .function = ip6_vxlan_gbp_bypass,
1016  .name = "ip6-vxlan-gbp-bypass",
1017  .vector_size = sizeof (u32),
1018  .n_next_nodes = IP_VXLAN_GBP_BYPASS_N_NEXT,
1019  .next_nodes = {
1020  [IP_VXLAN_GBP_BYPASS_NEXT_DROP] = "error-drop",
1021  [IP_VXLAN_GBP_BYPASS_NEXT_VXLAN_GBP] = "vxlan6-gbp-input",
1022  },
1023  .format_buffer = format_ip6_header,
1024  .format_trace = format_ip6_forward_next_trace,
1025 };
1026 
1028 /* *INDENT-ON* */
1029 
1030 /* Dummy init function to get us linked in. */
1031 clib_error_t *
1033 {
1034  return 0;
1035 }
1036 
1038 
1039 /*
1040  * fd.io coding-style-patch-verification: ON
1041  *
1042  * Local Variables:
1043  * eval: (c-set-style "gnu")
1044  * End:
1045  */
static vxlan_gbp_tunnel_t * vxlan6_gbp_find_tunnel(vxlan_gbp_main_t *vxm, last_tunnel_cache6 *cache, u32 fib_index, ip6_header_t *ip6_0, vxlan_gbp_header_t *vxlan_gbp0, vxlan_gbp_tunnel_t **stats_t0)
Definition: decap.c:118
#define CLIB_UNUSED(x)
Definition: clib.h:82
clib_bihash_24_8_t vxlan6_gbp_tunnel_by_key
Definition: vxlan_gbp.h:170
static uword vxlan_gbp_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, u8 is_ip4)
Definition: decap.c:192
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
ip4_address_t src_address
Definition: ip4_packet.h:170
#define vnet_buffer2(b)
Definition: buffer.h:413
static vxlan_gbp_flags_t vxlan_gbp_get_flags(vxlan_gbp_header_t *h)
vnet_interface_main_t interface_main
Definition: vnet.h:56
format_function_t format_ip4_header
Definition: format.h:83
#define PREDICT_TRUE(x)
Definition: clib.h:112
u64 as_u64[2]
Definition: ip6_packet.h:51
unsigned long u64
Definition: types.h:89
vxlan_gbp_input_next_t
Definition: vxlan_gbp.h:140
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
static u32 buf_fib_index(vlib_buffer_t *b, u32 is_ip4)
Definition: decap.c:55
vlib_node_registration_t ip4_vxlan_gbp_bypass_node
(constructor) VLIB_REGISTER_NODE (ip4_vxlan_gbp_bypass_node)
Definition: decap.c:979
#define foreach_vxlan_gbp_input_next
Definition: vxlan_gbp.h:133
ip_vxan_gbp_bypass_next_t
Definition: decap.c:565
vxlan_gbp_main_t vxlan_gbp_main
Definition: vxlan_gbp.c:33
u32 * fib_index_by_sw_if_index
Table index indexed by software interface.
Definition: ip4.h:112
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
static uword ip4_address_is_multicast(const ip4_address_t *a)
Definition: ip4_packet.h:318
static uword ip4_vxlan_gbp_bypass(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: decap.c:972
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:493
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:267
ip6_address_t src_address
Definition: ip6_packet.h:378
unsigned char u8
Definition: types.h:56
static int ip4_is_fragment(const ip4_header_t *i)
Definition: ip4_packet.h:213
static int clib_bihash_key_compare_24_8(u64 *a, u64 *b)
Definition: bihash_24_8.h:67
static uword ip6_vxlan_gbp_bypass(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: decap.c:1006
static u8 * format_vxlan_gbp_rx_trace(u8 *s, va_list *args)
Definition: decap.c:36
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
u32 sw_if_index
Definition: vxlan_gbp.api:37
#define always_inline
Definition: clib.h:98
ip4_address_t dst_address
Definition: ip4_packet.h:170
u8 * format_vxlan_gbp_header_gpflags(u8 *s, va_list *args)
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:839
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:188
static void * ip4_next_header(ip4_header_t *i)
Definition: ip4_packet.h:241
unsigned int u32
Definition: types.h:88
static char * vxlan_gbp_error_strings[]
Definition: decap.c:522
static vxlan_gbp_gpflags_t vxlan_gbp_get_gpflags(vxlan_gbp_header_t *h)
#define hash_get(h, key)
Definition: hash.h:249
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:511
static uword vxlan6_gbp_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: decap.c:516
vlib_node_registration_t ip4_input_node
Global ip4 input node.
Definition: ip4_input.c:317
clib_bihash_16_8_t vxlan4_gbp_tunnel_by_key
Definition: vxlan_gbp.h:169
static uword ip_vxlan_gbp_bypass_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, u32 is_ip4)
Definition: decap.c:573
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:214
static vxlan_gbp_input_next_t vxlan_gbp_tunnel_get_next(const vxlan_gbp_tunnel_t *t, vlib_buffer_t *b0)
Definition: decap.c:168
#define PREDICT_FALSE(x)
Definition: clib.h:111
u32 ip4_tcp_udp_validate_checksum(vlib_main_t *vm, vlib_buffer_t *p0)
Definition: ip4_forward.c:1187
#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
vxlan4_tunnel_key_t last_tunnel_cache4
Definition: decap.c:63
clib_error_t * ip6_vxlan_gbp_bypass_init(vlib_main_t *vm)
Definition: decap.c:1032
#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:338
static vxlan_gbp_tunnel_t * vxlan4_gbp_find_tunnel(vxlan_gbp_main_t *vxm, last_tunnel_cache4 *cache, u32 fib_index, ip4_header_t *ip4_0, vxlan_gbp_header_t *vxlan_gbp0, vxlan_gbp_tunnel_t **stats_t0)
Definition: decap.c:71
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:139
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1150
vlib_node_registration_t vxlan4_gbp_input_node
(constructor) VLIB_REGISTER_NODE (vxlan4_gbp_input_node)
Definition: decap.c:22
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169
static u16 vxlan_gbp_get_sclass(vxlan_gbp_header_t *h)
u16 n_vectors
Definition: node.h:420
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:212
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:79
vlib_main_t * vm
Definition: buffer.c:301
static void ip6_address_set_zero(ip6_address_t *a)
Definition: ip6_packet.h:271
static_always_inline void vnet_feature_next(u32 *next0, vlib_buffer_t *b0)
Definition: feature.h:295
static u32 vxlan_gbp_get_vni(vxlan_gbp_header_t *h)
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
vlib_node_registration_t vxlan6_gbp_input_node
(constructor) VLIB_REGISTER_NODE (vxlan6_gbp_input_node)
Definition: decap.c:23
vxlan6_tunnel_key_t last_tunnel_cache6
Definition: decap.c:134
clib_error_t * ip4_vxlan_gbp_bypass_init(vlib_main_t *vm)
Definition: decap.c:998
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:452
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:405
signed int i32
Definition: types.h:77
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:537
ip6_main_t ip6_main
Definition: ip6_forward.c:2624
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:233
format_function_t format_ip6_header
Definition: format.h:97
static uword ip6_address_is_equal(const ip6_address_t *a, const ip6_address_t *b)
Definition: ip6_packet.h:235
static uword ip6_address_is_multicast(const ip6_address_t *a)
Definition: ip6_packet.h:172
ip46_address_t src
Definition: vxlan_gbp.h:85
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:57
#define vec_elt(v, i)
Get vector value at index i.
struct _vlib_node_registration vlib_node_registration_t
Definition: defs.h:47
vlib_node_registration_t ip6_vxlan_gbp_bypass_node
(constructor) VLIB_REGISTER_NODE (ip6_vxlan_gbp_bypass_node)
Definition: decap.c:1013
u16 payload_length
Definition: ip6_packet.h:369
u32 ip6_tcp_udp_icmp_validate_checksum(vlib_main_t *vm, vlib_buffer_t *p0)
Definition: ip6_forward.c:1020
static void vnet_update_l2_len(vlib_buffer_t *b)
Definition: l2_input.h:226
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:1041
u64 uword
Definition: types.h:112
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:244
u8 * format_ip4_forward_next_trace(u8 *s, va_list *args)
Definition: ip4_forward.c:991
A collection of combined counters.
Definition: counter.h:188
vxlan_gbp_tunnel_t * tunnels
Definition: vxlan_gbp.h:166
#define hash_get_mem(h, key)
Definition: hash.h:269
#define vnet_buffer(b)
Definition: buffer.h:368
VLIB_NODE_FUNCTION_MULTIARCH(l2t_decap_node, l2t_decap_node_fn)
ip4_main_t ip4_main
Global ip4 main structure.
Definition: ip4_forward.c:903
u8 data[0]
Packet data.
Definition: buffer.h:176
static uword vxlan4_gbp_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: decap.c:509
u16 flags
Copy of main node flags.
Definition: node.h:531
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:326
vxlan_gbp_tunnel_mode_t mode
Tunnel mode.
Definition: vxlan_gbp.h:105
#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:117
u32 * fib_index_by_sw_if_index
Definition: ip6.h:193
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:62
Definition: defs.h:46
ip6_address_t dst_address
Definition: ip6_packet.h:378
vnet_main_t * vnet_main
Definition: vxlan_gbp.h:188
u8 * format_ip6_forward_next_trace(u8 *s, va_list *args)
Definition: ip6_forward.c:802