FD.io VPP  v20.09-64-g4f7b92f0a
Vector Packet Processing
encap.c
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1 /*
2  * Copyright (c) 2018 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 <vppinfra/error.h>
16 #include <vppinfra/hash.h>
17 #include <vnet/vnet.h>
18 #include <vnet/ip/ip.h>
19 #include <vnet/ethernet/ethernet.h>
20 #include <vnet/interface_output.h>
22 #include <vnet/qos/qos_types.h>
23 #include <vnet/adj/rewrite.h>
24 
25 /* Statistics (not all errors) */
26 #define foreach_vxlan_gbp_encap_error \
27 _(ENCAPSULATED, "good packets encapsulated")
28 
30 #define _(sym,string) string,
32 #undef _
33 };
34 
35 typedef enum
36 {
37 #define _(sym,str) VXLAN_GBP_ENCAP_ERROR_##sym,
39 #undef _
42 
43 typedef enum
44 {
48 
49 typedef struct
50 {
56 
57 #ifndef CLIB_MARCH_VARIANT
58 u8 *
59 format_vxlan_gbp_encap_trace (u8 * s, va_list * args)
60 {
61  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
62  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
63  vxlan_gbp_encap_trace_t *t = va_arg (*args, vxlan_gbp_encap_trace_t *);
64 
65  s =
66  format (s,
67  "VXLAN_GBP encap to vxlan_gbp_tunnel%d vni %d sclass %d flags %U",
68  t->tunnel_index, t->vni, t->sclass,
70  return s;
71 }
72 #endif /* CLIB_MARCH_VARIANT */
73 
77  vlib_frame_t * from_frame, u8 is_ip4, u8 csum_offload)
78 {
79  u32 n_left_from, next_index, *from, *to_next;
81  vnet_main_t *vnm = vxm->vnet_main;
83  vlib_combined_counter_main_t *tx_counter =
85  u32 pkts_encapsulated = 0;
86  u32 thread_index = vlib_get_thread_index ();
87  u32 sw_if_index0 = 0, sw_if_index1 = 0;
88  u32 next0 = 0, next1 = 0;
89  vxlan_gbp_tunnel_t *t0 = NULL, *t1 = NULL;
90  index_t dpoi_idx0 = INDEX_INVALID, dpoi_idx1 = INDEX_INVALID;
91  vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
92 
93  from = vlib_frame_vector_args (from_frame);
94  n_left_from = from_frame->n_vectors;
95  vlib_get_buffers (vm, from, bufs, n_left_from);
96 
97  next_index = node->cached_next_index;
98 
99  STATIC_ASSERT_SIZEOF (ip6_vxlan_gbp_header_t, 56);
100  STATIC_ASSERT_SIZEOF (ip4_vxlan_gbp_header_t, 36);
101 
102  u8 const underlay_hdr_len = is_ip4 ?
103  sizeof (ip4_vxlan_gbp_header_t) : sizeof (ip6_vxlan_gbp_header_t);
104  u16 const l3_len = is_ip4 ? sizeof (ip4_header_t) : sizeof (ip6_header_t);
105  u32 const csum_flags = is_ip4 ? VNET_BUFFER_F_OFFLOAD_IP_CKSUM |
106  VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
107  VNET_BUFFER_F_L3_HDR_OFFSET_VALID | VNET_BUFFER_F_L4_HDR_OFFSET_VALID :
108  VNET_BUFFER_F_IS_IP6 | VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
109  VNET_BUFFER_F_L3_HDR_OFFSET_VALID | VNET_BUFFER_F_L4_HDR_OFFSET_VALID;
110  u32 const inner_packet_csum_offload_flags =
111  VNET_BUFFER_F_OFFLOAD_IP_CKSUM | VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
112  VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
113  u32 const inner_packet_removed_flags =
114  VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_IS_IP6 |
115  VNET_BUFFER_F_L2_HDR_OFFSET_VALID | VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
116  VNET_BUFFER_F_L4_HDR_OFFSET_VALID;
117 
118  while (n_left_from > 0)
119  {
120  u32 n_left_to_next;
121 
122  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
123 
124  while (n_left_from >= 4 && n_left_to_next >= 2)
125  {
126  /* Prefetch next iteration. */
127  {
128  vlib_buffer_t *p2, *p3;
129 
130  p2 = vlib_get_buffer (vm, from[2]);
131  p3 = vlib_get_buffer (vm, from[3]);
132 
133  vlib_prefetch_buffer_header (p2, LOAD);
134  vlib_prefetch_buffer_header (p3, LOAD);
135 
137  2 * CLIB_CACHE_LINE_BYTES, LOAD);
139  2 * CLIB_CACHE_LINE_BYTES, LOAD);
140  }
141 
142  u32 bi0 = to_next[0] = from[0];
143  u32 bi1 = to_next[1] = from[1];
144  from += 2;
145  to_next += 2;
146  n_left_to_next -= 2;
147  n_left_from -= 2;
148 
149  u32 or_flags = b[0]->flags | b[1]->flags;
150  if (csum_offload && (or_flags & inner_packet_csum_offload_flags))
151  {
152  /* Only calculate the non-GSO packet csum offload */
153  if ((b[0]->flags & VNET_BUFFER_F_GSO) == 0)
154  {
155  vnet_calc_checksums_inline (vm, b[0],
156  b[0]->flags &
157  VNET_BUFFER_F_IS_IP4,
158  b[0]->flags &
159  VNET_BUFFER_F_IS_IP6);
160  b[0]->flags &= ~inner_packet_removed_flags;
161  }
162  if ((b[1]->flags & VNET_BUFFER_F_GSO) == 0)
163  {
164  vnet_calc_checksums_inline (vm, b[1],
165  b[1]->flags &
166  VNET_BUFFER_F_IS_IP4,
167  b[1]->flags &
168  VNET_BUFFER_F_IS_IP6);
169  b[1]->flags &= ~inner_packet_removed_flags;
170  }
171  }
172 
173  u32 flow_hash0 = vnet_l2_compute_flow_hash (b[0]);
174  u32 flow_hash1 = vnet_l2_compute_flow_hash (b[1]);
175 
176  /* Get next node index and adj index from tunnel next_dpo */
177  if (sw_if_index0 != vnet_buffer (b[0])->sw_if_index[VLIB_TX])
178  {
179  sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
180  vnet_hw_interface_t *hi0 =
181  vnet_get_sup_hw_interface (vnm, sw_if_index0);
182  t0 = &vxm->tunnels[hi0->dev_instance];
183  /* Note: change to always set next0 if it may set to drop */
184  next0 = t0->next_dpo.dpoi_next_node;
185  dpoi_idx0 = t0->next_dpo.dpoi_index;
186  }
187 
188  /* Get next node index and adj index from tunnel next_dpo */
189  if (sw_if_index1 != vnet_buffer (b[1])->sw_if_index[VLIB_TX])
190  {
191  if (sw_if_index0 == vnet_buffer (b[1])->sw_if_index[VLIB_TX])
192  {
193  sw_if_index1 = sw_if_index0;
194  t1 = t0;
195  next1 = next0;
196  dpoi_idx1 = dpoi_idx0;
197  }
198  else
199  {
200  sw_if_index1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
201  vnet_hw_interface_t *hi1 =
202  vnet_get_sup_hw_interface (vnm, sw_if_index1);
203  t1 = &vxm->tunnels[hi1->dev_instance];
204  /* Note: change to always set next1 if it may set to drop */
205  next1 = t1->next_dpo.dpoi_next_node;
206  dpoi_idx1 = t1->next_dpo.dpoi_index;
207  }
208  }
209 
210  vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpoi_idx0;
211  vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = dpoi_idx1;
212 
213  ASSERT (t0->rewrite_header.data_bytes == underlay_hdr_len);
214  ASSERT (t1->rewrite_header.data_bytes == underlay_hdr_len);
217  underlay_hdr_len);
218 
219  vlib_buffer_advance (b[0], -underlay_hdr_len);
220  vlib_buffer_advance (b[1], -underlay_hdr_len);
221 
222  u32 len0 = vlib_buffer_length_in_chain (vm, b[0]);
223  u32 len1 = vlib_buffer_length_in_chain (vm, b[1]);
224  u16 payload_l0 = clib_host_to_net_u16 (len0 - l3_len);
225  u16 payload_l1 = clib_host_to_net_u16 (len1 - l3_len);
226 
227  void *underlay0 = vlib_buffer_get_current (b[0]);
228  void *underlay1 = vlib_buffer_get_current (b[1]);
229 
230  ip4_header_t *ip4_0, *ip4_1;
231  qos_bits_t ip4_0_tos = 0, ip4_1_tos = 0;
232  ip6_header_t *ip6_0, *ip6_1;
233  udp_header_t *udp0, *udp1;
234  vxlan_gbp_header_t *vxlan_gbp0, *vxlan_gbp1;
235  u8 *l3_0, *l3_1;
236  if (is_ip4)
237  {
238  ip4_vxlan_gbp_header_t *hdr0 = underlay0;
239  ip4_vxlan_gbp_header_t *hdr1 = underlay1;
240 
241  /* Fix the IP4 checksum and length */
242  ip4_0 = &hdr0->ip4;
243  ip4_1 = &hdr1->ip4;
244  ip4_0->length = clib_host_to_net_u16 (len0);
245  ip4_1->length = clib_host_to_net_u16 (len1);
246 
247  if (PREDICT_FALSE (b[0]->flags & VNET_BUFFER_F_QOS_DATA_VALID))
248  {
249  ip4_0_tos = vnet_buffer2 (b[0])->qos.bits;
250  ip4_0->tos = ip4_0_tos;
251  }
252  if (PREDICT_FALSE (b[1]->flags & VNET_BUFFER_F_QOS_DATA_VALID))
253  {
254  ip4_1_tos = vnet_buffer2 (b[1])->qos.bits;
255  ip4_1->tos = ip4_1_tos;
256  }
257 
258  l3_0 = (u8 *) ip4_0;
259  l3_1 = (u8 *) ip4_1;
260  udp0 = &hdr0->udp;
261  udp1 = &hdr1->udp;
262  vxlan_gbp0 = &hdr0->vxlan_gbp;
263  vxlan_gbp1 = &hdr1->vxlan_gbp;
264  }
265  else /* ipv6 */
266  {
267  ip6_vxlan_gbp_header_t *hdr0 = underlay0;
268  ip6_vxlan_gbp_header_t *hdr1 = underlay1;
269 
270  /* Fix IP6 payload length */
271  ip6_0 = &hdr0->ip6;
272  ip6_1 = &hdr1->ip6;
273  ip6_0->payload_length = payload_l0;
274  ip6_1->payload_length = payload_l1;
275 
276  l3_0 = (u8 *) ip6_0;
277  l3_1 = (u8 *) ip6_1;
278  udp0 = &hdr0->udp;
279  udp1 = &hdr1->udp;
280  vxlan_gbp0 = &hdr0->vxlan_gbp;
281  vxlan_gbp1 = &hdr1->vxlan_gbp;
282  }
283 
284  /* Fix UDP length and set source port */
285  udp0->length = payload_l0;
286  udp0->src_port = flow_hash0;
287  udp1->length = payload_l1;
288  udp1->src_port = flow_hash1;
289 
290  /* set source class and gpflags */
291  vxlan_gbp0->gpflags = vnet_buffer2 (b[0])->gbp.flags;
292  vxlan_gbp1->gpflags = vnet_buffer2 (b[1])->gbp.flags;
293  vxlan_gbp0->sclass =
294  clib_host_to_net_u16 (vnet_buffer2 (b[0])->gbp.sclass);
295  vxlan_gbp1->sclass =
296  clib_host_to_net_u16 (vnet_buffer2 (b[1])->gbp.sclass);
297 
298  if (csum_offload)
299  {
300  b[0]->flags |= csum_flags;
301  vnet_buffer (b[0])->l3_hdr_offset = l3_0 - b[0]->data;
302  vnet_buffer (b[0])->l4_hdr_offset = (u8 *) udp0 - b[0]->data;
303  b[1]->flags |= csum_flags;
304  vnet_buffer (b[1])->l3_hdr_offset = l3_1 - b[1]->data;
305  vnet_buffer (b[1])->l4_hdr_offset = (u8 *) udp1 - b[1]->data;
306  }
307  /* IPv4 UDP checksum only if checksum offload is used */
308  else if (is_ip4)
309  {
310  ip_csum_t sum0 = ip4_0->checksum;
311  sum0 = ip_csum_update (sum0, 0, ip4_0->length, ip4_header_t,
312  length /* changed member */ );
313  if (PREDICT_FALSE (ip4_0_tos))
314  {
315  sum0 = ip_csum_update (sum0, 0, ip4_0_tos, ip4_header_t,
316  tos /* changed member */ );
317  }
318  ip4_0->checksum = ip_csum_fold (sum0);
319  ip_csum_t sum1 = ip4_1->checksum;
320  sum1 = ip_csum_update (sum1, 0, ip4_1->length, ip4_header_t,
321  length /* changed member */ );
322  if (PREDICT_FALSE (ip4_1_tos))
323  {
324  sum1 = ip_csum_update (sum1, 0, ip4_1_tos, ip4_header_t,
325  tos /* changed member */ );
326  }
327  ip4_1->checksum = ip_csum_fold (sum1);
328  }
329  /* IPv6 UDP checksum is mandatory */
330  else
331  {
332  int bogus = 0;
333 
335  (vm, b[0], ip6_0, &bogus);
336  ASSERT (bogus == 0);
337  if (udp0->checksum == 0)
338  udp0->checksum = 0xffff;
340  (vm, b[1], ip6_1, &bogus);
341  ASSERT (bogus == 0);
342  if (udp1->checksum == 0)
343  udp1->checksum = 0xffff;
344  }
345 
346  /* save inner packet flow_hash for load-balance node */
347  vnet_buffer (b[0])->ip.flow_hash = flow_hash0;
348  vnet_buffer (b[1])->ip.flow_hash = flow_hash1;
349 
350  vlib_increment_combined_counter (tx_counter, thread_index,
351  sw_if_index0, 1, len0);
352  vlib_increment_combined_counter (tx_counter, thread_index,
353  sw_if_index1, 1, len1);
354  pkts_encapsulated += 2;
355 
356  if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
357  {
359  vlib_add_trace (vm, node, b[0], sizeof (*tr));
360  tr->tunnel_index = t0 - vxm->tunnels;
361  tr->vni = t0->vni;
362  tr->sclass = vnet_buffer2 (b[0])->gbp.sclass;
363  tr->flags = vnet_buffer2 (b[0])->gbp.flags;
364  }
365 
366  if (PREDICT_FALSE (b[1]->flags & VLIB_BUFFER_IS_TRACED))
367  {
369  vlib_add_trace (vm, node, b[1], sizeof (*tr));
370  tr->tunnel_index = t1 - vxm->tunnels;
371  tr->vni = t1->vni;
372  tr->sclass = vnet_buffer2 (b[1])->gbp.sclass;
373  tr->flags = vnet_buffer2 (b[1])->gbp.flags;
374  }
375  b += 2;
376 
377  vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
378  to_next, n_left_to_next,
379  bi0, bi1, next0, next1);
380  }
381 
382  while (n_left_from > 0 && n_left_to_next > 0)
383  {
384  u32 bi0 = to_next[0] = from[0];
385  from += 1;
386  to_next += 1;
387  n_left_from -= 1;
388  n_left_to_next -= 1;
389 
390  if (csum_offload && (b[0]->flags & inner_packet_csum_offload_flags))
391  {
392  /* Only calculate the non-GSO packet csum offload */
393  if ((b[0]->flags & VNET_BUFFER_F_GSO) == 0)
394  {
395  vnet_calc_checksums_inline (vm, b[0],
396  b[0]->flags &
397  VNET_BUFFER_F_IS_IP4,
398  b[0]->flags &
399  VNET_BUFFER_F_IS_IP6);
400  b[0]->flags &= ~inner_packet_removed_flags;
401  }
402  }
403 
404  u32 flow_hash0 = vnet_l2_compute_flow_hash (b[0]);
405 
406  /* Get next node index and adj index from tunnel next_dpo */
407  if (sw_if_index0 != vnet_buffer (b[0])->sw_if_index[VLIB_TX])
408  {
409  sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
410  vnet_hw_interface_t *hi0 =
411  vnet_get_sup_hw_interface (vnm, sw_if_index0);
412  t0 = &vxm->tunnels[hi0->dev_instance];
413  /* Note: change to always set next0 if it may be set to drop */
414  next0 = t0->next_dpo.dpoi_next_node;
415  dpoi_idx0 = t0->next_dpo.dpoi_index;
416  }
417  vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpoi_idx0;
418 
419  ASSERT (t0->rewrite_header.data_bytes == underlay_hdr_len);
421  underlay_hdr_len);
422 
423  vlib_buffer_advance (b[0], -underlay_hdr_len);
424  void *underlay0 = vlib_buffer_get_current (b[0]);
425 
426  u32 len0 = vlib_buffer_length_in_chain (vm, b[0]);
427  u16 payload_l0 = clib_host_to_net_u16 (len0 - l3_len);
428 
429  vxlan_gbp_header_t *vxlan_gbp0;
430  udp_header_t *udp0;
431  ip4_header_t *ip4_0;
432  qos_bits_t ip4_0_tos = 0;
433  ip6_header_t *ip6_0;
434  u8 *l3_0;
435  if (is_ip4)
436  {
437  ip4_vxlan_gbp_header_t *hdr = underlay0;
438 
439  /* Fix the IP4 checksum and length */
440  ip4_0 = &hdr->ip4;
441  ip4_0->length = clib_host_to_net_u16 (len0);
442 
443  if (PREDICT_FALSE (b[0]->flags & VNET_BUFFER_F_QOS_DATA_VALID))
444  {
445  ip4_0_tos = vnet_buffer2 (b[0])->qos.bits;
446  ip4_0->tos = ip4_0_tos;
447  }
448 
449  l3_0 = (u8 *) ip4_0;
450  udp0 = &hdr->udp;
451  vxlan_gbp0 = &hdr->vxlan_gbp;
452  }
453  else /* ip6 path */
454  {
455  ip6_vxlan_gbp_header_t *hdr = underlay0;
456 
457  /* Fix IP6 payload length */
458  ip6_0 = &hdr->ip6;
459  ip6_0->payload_length = payload_l0;
460 
461  l3_0 = (u8 *) ip6_0;
462  udp0 = &hdr->udp;
463  vxlan_gbp0 = &hdr->vxlan_gbp;
464  }
465 
466  /* Fix UDP length and set source port */
467  udp0->length = payload_l0;
468  udp0->src_port = flow_hash0;
469 
470  /* set source class and gpflags */
471  vxlan_gbp0->gpflags = vnet_buffer2 (b[0])->gbp.flags;
472  vxlan_gbp0->sclass =
473  clib_host_to_net_u16 (vnet_buffer2 (b[0])->gbp.sclass);
474 
475  if (csum_offload)
476  {
477  b[0]->flags |= csum_flags;
478  vnet_buffer (b[0])->l3_hdr_offset = l3_0 - b[0]->data;
479  vnet_buffer (b[0])->l4_hdr_offset = (u8 *) udp0 - b[0]->data;
480  }
481  /* IPv4 UDP checksum only if checksum offload is used */
482  else if (is_ip4)
483  {
484  ip_csum_t sum0 = ip4_0->checksum;
485  sum0 = ip_csum_update (sum0, 0, ip4_0->length, ip4_header_t,
486  length /* changed member */ );
487  if (PREDICT_FALSE (ip4_0_tos))
488  {
489  sum0 = ip_csum_update (sum0, 0, ip4_0_tos, ip4_header_t,
490  tos /* changed member */ );
491  }
492  ip4_0->checksum = ip_csum_fold (sum0);
493  }
494  /* IPv6 UDP checksum is mandatory */
495  else
496  {
497  int bogus = 0;
498 
500  (vm, b[0], ip6_0, &bogus);
501  ASSERT (bogus == 0);
502  if (udp0->checksum == 0)
503  udp0->checksum = 0xffff;
504  }
505 
506  /* save inner packet flow_hash for load-balance node */
507  vnet_buffer (b[0])->ip.flow_hash = flow_hash0;
508 
509  vlib_increment_combined_counter (tx_counter, thread_index,
510  sw_if_index0, 1, len0);
511  pkts_encapsulated++;
512 
513  if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
514  {
516  vlib_add_trace (vm, node, b[0], sizeof (*tr));
517  tr->tunnel_index = t0 - vxm->tunnels;
518  tr->vni = t0->vni;
519  tr->sclass = vnet_buffer2 (b[0])->gbp.sclass;
520  tr->flags = vnet_buffer2 (b[0])->gbp.flags;
521  }
522  b += 1;
523 
524  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
525  to_next, n_left_to_next,
526  bi0, next0);
527  }
528 
529  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
530  }
531 
532  /* Do we still need this now that tunnel tx stats is kept? */
534  VXLAN_GBP_ENCAP_ERROR_ENCAPSULATED,
535  pkts_encapsulated);
536 
537  return from_frame->n_vectors;
538 }
539 
542  vlib_frame_t * from_frame)
543 {
544  /* Disable chksum offload as setup overhead in tx node is not worthwhile
545  for ip4 header checksum only, unless udp checksum is also required */
546  return vxlan_gbp_encap_inline (vm, node, from_frame, /* is_ip4 */ 1,
547  /* csum_offload */ 0);
548 }
549 
552  vlib_frame_t * from_frame)
553 {
554  /* Enable checksum offload for ip6 as udp checksum is mandatory, */
555  return vxlan_gbp_encap_inline (vm, node, from_frame, /* is_ip4 */ 0,
556  /* csum_offload */ 1);
557 }
558 
559 /* *INDENT-OFF* */
561 {
562  .name = "vxlan4-gbp-encap",
563  .vector_size = sizeof (u32),
564  .format_trace = format_vxlan_gbp_encap_trace,
567  .error_strings = vxlan_gbp_encap_error_strings,
568  .n_next_nodes = VXLAN_GBP_ENCAP_N_NEXT,
569  .next_nodes = {
570  [VXLAN_GBP_ENCAP_NEXT_DROP] = "error-drop",
571  },
572 };
573 
575 {
576  .name = "vxlan6-gbp-encap",
577  .vector_size = sizeof (u32),
578  .format_trace = format_vxlan_gbp_encap_trace,
581  .error_strings = vxlan_gbp_encap_error_strings,
582  .n_next_nodes = VXLAN_GBP_ENCAP_N_NEXT,
583  .next_nodes = {
584  [VXLAN_GBP_ENCAP_NEXT_DROP] = "error-drop",
585  },
586 };
587 /* *INDENT-ON* */
588 
589 /*
590  * fd.io coding-style-patch-verification: ON
591  *
592  * Local Variables:
593  * eval: (c-set-style "gnu")
594  * End:
595  */
#define vnet_rewrite_one_header(rw0, p0, most_likely_size)
Definition: rewrite.h:211
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
#define CLIB_UNUSED(x)
Definition: clib.h:87
vl_api_wireguard_peer_flags_t flags
Definition: wireguard.api:103
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
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
#define vnet_buffer2(b)
Definition: buffer.h:482
vnet_interface_main_t interface_main
Definition: vnet.h:59
vxlan_gbp_encap_error_t
Definition: encap.c:35
vlib_node_registration_t vxlan4_gbp_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan4_gbp_encap_node)
Definition: encap.c:560
u32 index_t
A Data-Path Object is an object that represents actions that are applied to packets are they are swit...
Definition: dpo.h:41
vxlan_gbp_main_t vxlan_gbp_main
Definition: vxlan_gbp.c:34
static uword vxlan_gbp_encap_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, u8 is_ip4, u8 csum_offload)
Definition: encap.c:75
uword ip_csum_t
Definition: ip_packet.h:244
vlib_main_t * vm
Definition: in2out_ed.c:1582
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
#define VLIB_NODE_FN(node)
Definition: node.h:202
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:402
vlib_node_registration_t vxlan6_gbp_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan6_gbp_encap_node)
Definition: encap.c:574
unsigned char u8
Definition: types.h:56
u8 data[128]
Definition: ipsec_types.api:89
#define foreach_vxlan_gbp_encap_error
Definition: encap.c:26
u8 * format_vxlan_gbp_header_gpflags(u8 *s, va_list *args)
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:881
vxlan_gbp_encap_next_t
Definition: encap.c:43
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
Definition: buffer.h:203
unsigned int u32
Definition: types.h:88
#define VLIB_FRAME_SIZE
Definition: node.h:377
vl_api_fib_path_type_t type
Definition: fib_types.api:123
dpo_id_t next_dpo
Definition: vxlan_gbp.h:76
unsigned short u16
Definition: types.h:57
static u32 vnet_l2_compute_flow_hash(vlib_buffer_t *b)
Definition: l2_input.h:276
static char * vxlan_gbp_encap_error_strings[]
Definition: encap.c:29
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:229
#define PREDICT_FALSE(x)
Definition: clib.h:120
#define always_inline
Definition: ipsec.h:28
u32 node_index
Node index.
Definition: node.h:487
#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
#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:224
#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:391
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
Definition: node_funcs.h:1231
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169
u16 n_vectors
Definition: node.h:396
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:219
#define CLIB_PREFETCH(addr, size, type)
Definition: cache.h:80
u8 data[]
Packet data.
Definition: buffer.h:181
#define ARRAY_LEN(x)
Definition: clib.h:67
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:483
vlib_main_t vlib_node_runtime_t * node
Definition: in2out_ed.c:1582
u16 ip6_tcp_udp_icmp_compute_checksum(vlib_main_t *vm, vlib_buffer_t *p0, ip6_header_t *ip0, int *bogus_lengthp)
Definition: ip6_forward.c:1095
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:510
#define ASSERT(truth)
ip_dscp_t tos
Definition: ip4_packet.h:96
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:248
Definition: defs.h:47
u16 payload_length
Definition: ip6_packet.h:301
index_t dpoi_index
the index of objects of that type
Definition: dpo.h:186
#define INDEX_INVALID
Invalid index - used when no index is known blazoned capitals INVALID speak volumes where ~0 does not...
Definition: dpo.h:47
VLIB buffer representation.
Definition: buffer.h:102
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:297
#define ip_csum_update(sum, old, new, type, field)
Definition: ip_packet.h:294
A collection of combined counters.
Definition: counter.h:188
vxlan_gbp_tunnel_t * tunnels
Definition: vxlan_gbp.h:167
static_always_inline void vnet_calc_checksums_inline(vlib_main_t *vm, vlib_buffer_t *b, int is_ip4, int is_ip6)
#define vnet_buffer(b)
Definition: buffer.h:417
void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
Definition: trace.c:577
u16 dpoi_next_node
The next VLIB node to follow.
Definition: dpo.h:182
static_always_inline void vlib_get_buffers(vlib_main_t *vm, u32 *bi, vlib_buffer_t **b, int count)
Translate array of buffer indices into buffer pointers.
Definition: buffer_funcs.h:280
#define vnet_rewrite_two_headers(rw0, rw1, p0, p1, most_likely_size)
Definition: rewrite.h:215
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
#define STATIC_ASSERT_SIZEOF(d, s)
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
u8 qos_bits_t
Type, er, safety for us water based entities.
Definition: qos_types.h:68
static u16 ip_csum_fold(ip_csum_t c)
Definition: ip_packet.h:300
vl_api_interface_index_t sw_if_index
Definition: wireguard.api:33
vnet_main_t * vnet_main
Definition: vxlan_gbp.h:189
u8 * format_vxlan_gbp_encap_trace(u8 *s, va_list *args)
Definition: encap.c:59