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Vector Packet Processing
vxlan_gpe.c
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1 /*
2  * Copyright (c) 2015 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 /**
16  * @file
17  * @brief Common utility functions for IPv4 and IPv6 VXLAN GPE tunnels
18  *
19 */
21 #include <vnet/fib/fib.h>
22 #include <vnet/ip/format.h>
23 #include <vnet/fib/fib_entry.h>
24 #include <vnet/fib/fib_table.h>
25 #include <vnet/mfib/mfib_table.h>
26 #include <vnet/adj/adj_mcast.h>
27 #include <vnet/interface.h>
28 #include <vlib/vlib.h>
29 
30 /**
31  * @file
32  * @brief VXLAN-GPE.
33  *
34  * VXLAN-GPE provides the features needed to allow L2 bridge domains (BDs)
35  * to span multiple servers. This is done by building an L2 overlay on
36  * top of an L3 network underlay using VXLAN-GPE tunnels.
37  *
38  * This makes it possible for servers to be co-located in the same data
39  * center or be separated geographically as long as they are reachable
40  * through the underlay L3 network.
41  *
42  * You can refer to this kind of L2 overlay bridge domain as a VXLAN-GPE segment.
43  */
44 
46 
47 static u8 *
48 format_decap_next (u8 * s, va_list * args)
49 {
50  vxlan_gpe_tunnel_t *t = va_arg (*args, vxlan_gpe_tunnel_t *);
51 
52  switch (t->protocol)
53  {
54  case VXLAN_GPE_PROTOCOL_IP4:
55  s = format (s, "protocol ip4 fib-idx %d", t->decap_fib_index);
56  break;
57  case VXLAN_GPE_PROTOCOL_IP6:
58  s = format (s, "protocol ip6 fib-idx %d", t->decap_fib_index);
59  break;
60  case VXLAN_GPE_PROTOCOL_ETHERNET:
61  s = format (s, "protocol ethernet");
62  break;
63  case VXLAN_GPE_PROTOCOL_NSH:
64  s = format (s, "protocol nsh");
65  break;
66  default:
67  s = format (s, "protocol unknown %d", t->protocol);
68  }
69 
70  return s;
71 }
72 
73 /**
74  * @brief Format function for VXLAN GPE tunnel
75  *
76  * @param *s formatting string
77  * @param *args
78  *
79  * @return *s formatted string
80  *
81  */
82 u8 *
83 format_vxlan_gpe_tunnel (u8 * s, va_list * args)
84 {
85  vxlan_gpe_tunnel_t *t = va_arg (*args, vxlan_gpe_tunnel_t *);
87 
88  s = format (s, "[%d] lcl %U rmt %U vni %d fib-idx %d sw-if-idx %d ",
89  t - ngm->tunnels,
92  t->vni, t->encap_fib_index, t->sw_if_index);
93 
94 #if 0
95  /* next_dpo not yet used by vxlan-gpe-encap node */
96  s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index);
97  */
98 #endif
99  s = format (s, "decap-next-%U ", format_decap_next, t);
100 
102  s = format (s, "mcast-sw-if-idx %d ", t->mcast_sw_if_index);
103 
104  return s;
105 }
106 
107 /**
108  * @brief Naming for VXLAN GPE tunnel
109  *
110  * @param *s formatting string
111  * @param *args
112  *
113  * @return *s formatted string
114  *
115  */
116 static u8 *
117 format_vxlan_gpe_name (u8 * s, va_list * args)
118 {
119  u32 dev_instance = va_arg (*args, u32);
120  return format (s, "vxlan_gpe_tunnel%d", dev_instance);
121 }
122 
123 /**
124  * @brief CLI function for VXLAN GPE admin up/down
125  *
126  * @param *vnm
127  * @param hw_if_index
128  * @param flag
129  *
130  * @return *rc
131  *
132  */
133 static clib_error_t *
135  u32 flags)
136 {
137  u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
139  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
140 
141  return 0;
142 }
143 
144 /* *INDENT-OFF* */
145 VNET_DEVICE_CLASS (vxlan_gpe_device_class,static) = {
146  .name = "VXLAN_GPE",
147  .format_device_name = format_vxlan_gpe_name,
148  .format_tx_trace = format_vxlan_gpe_encap_trace,
149  .admin_up_down_function = vxlan_gpe_interface_admin_up_down,
150 };
151 /* *INDENT-ON* */
152 
153 
154 /**
155  * @brief Formatting function for tracing VXLAN GPE with length
156  *
157  * @param *s
158  * @param *args
159  *
160  * @return *s
161  *
162  */
163 static u8 *
165 {
166  u32 dev_instance = va_arg (*args, u32);
167  s = format (s, "unimplemented dev %u", dev_instance);
168  return s;
169 }
170 
171 /* *INDENT-OFF* */
172 VNET_HW_INTERFACE_CLASS (vxlan_gpe_hw_class) = {
173  .name = "VXLAN_GPE",
174  .format_header = format_vxlan_gpe_header_with_length,
175  .build_rewrite = default_build_rewrite,
176 };
177 /* *INDENT-ON* */
178 
179 static void
181 {
182  dpo_id_t dpo = DPO_INVALID;
183  u32 encap_index = vxlan_gpe_encap_node.index;
186 
187  fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
188  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
189  dpo_reset (&dpo);
190 }
191 
192 static vxlan_gpe_tunnel_t *
194 {
196  return ((vxlan_gpe_tunnel_t *) (((char *) node) -
198  node)));
199 }
200 
201 /**
202  * Function definition to backwalk a FIB node -
203  * Here we will restack the new dpo of VXLAN_GPE DIP to encap node.
204  */
207 {
210 }
211 
212 /**
213  * Function definition to get a FIB node from its index
214  */
215 static fib_node_t *
217 {
220 
221  t = pool_elt_at_index (ngm->tunnels, index);
222 
223  return (&t->node);
224 }
225 
226 /**
227  * Function definition to inform the FIB node that its last lock has gone.
228  */
229 static void
231 {
232  /*
233  * The VXLAN_GPE tunnel is a root of the graph. As such
234  * it never has children and thus is never locked.
235  */
236  ASSERT (0);
237 }
238 
239 /*
240  * Virtual function table registered by VXLAN_GPE tunnels
241  * for participation in the FIB object graph.
242  */
243 const static fib_node_vft_t vxlan_gpe_vft = {
245  .fnv_last_lock = vxlan_gpe_tunnel_last_lock_gone,
246  .fnv_back_walk = vxlan_gpe_tunnel_back_walk,
247 };
248 
249 #define foreach_gpe_copy_field \
250 _(vni) \
251 _(protocol) \
252 _(mcast_sw_if_index) \
253 _(encap_fib_index) \
254 _(decap_fib_index)
255 
256 #define foreach_copy_ipv4 { \
257  _(local.ip4.as_u32) \
258  _(remote.ip4.as_u32) \
259 }
260 
261 #define foreach_copy_ipv6 { \
262  _(local.ip6.as_u64[0]) \
263  _(local.ip6.as_u64[1]) \
264  _(remote.ip6.as_u64[0]) \
265  _(remote.ip6.as_u64[1]) \
266 }
267 
268 
269 /**
270  * @brief Calculate IPv4 VXLAN GPE rewrite header
271  *
272  * @param *t
273  *
274  * @return rc
275  *
276  */
277 int
279  u8 protocol_override, uword encap_next_node)
280 {
281  u8 *rw = 0;
282  ip4_header_t *ip0;
283  ip4_vxlan_gpe_header_t *h0;
284  int len;
285 
286  len = sizeof (*h0) + extension_size;
287 
288  vec_free (t->rewrite);
290 
291  h0 = (ip4_vxlan_gpe_header_t *) rw;
292 
293  /* Fixed portion of the (outer) ip4 header */
294  ip0 = &h0->ip4;
295  ip0->ip_version_and_header_length = 0x45;
296  ip0->ttl = 254;
297  ip0->protocol = IP_PROTOCOL_UDP;
298 
299  /* we fix up the ip4 header length and checksum after-the-fact */
300  ip0->src_address.as_u32 = t->local.ip4.as_u32;
301  ip0->dst_address.as_u32 = t->remote.ip4.as_u32;
302  ip0->checksum = ip4_header_checksum (ip0);
303 
304  /* UDP header, randomize src port on something, maybe? */
305  h0->udp.src_port = clib_host_to_net_u16 (4790);
306  h0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_VXLAN_GPE);
307 
308  /* VXLAN header. Are we having fun yet? */
309  h0->vxlan.flags = VXLAN_GPE_FLAGS_I | VXLAN_GPE_FLAGS_P;
310  h0->vxlan.ver_res = VXLAN_GPE_VERSION;
311  if (protocol_override)
312  {
313  h0->vxlan.protocol = protocol_override;
314  }
315  else
316  {
317  h0->vxlan.protocol = t->protocol;
318  }
319  t->rewrite_size = sizeof (ip4_vxlan_gpe_header_t) + extension_size;
320  h0->vxlan.vni_res = clib_host_to_net_u32 (t->vni << 8);
321 
322  t->rewrite = rw;
323  t->encap_next_node = encap_next_node;
324  return (0);
325 }
326 
327 /**
328  * @brief Calculate IPv6 VXLAN GPE rewrite header
329  *
330  * @param *t
331  *
332  * @return rc
333  *
334  */
335 int
337  u8 protocol_override, uword encap_next_node)
338 {
339  u8 *rw = 0;
340  ip6_header_t *ip0;
341  ip6_vxlan_gpe_header_t *h0;
342  int len;
343 
344  len = sizeof (*h0) + extension_size;
345 
346  vec_free (t->rewrite);
348 
349  h0 = (ip6_vxlan_gpe_header_t *) rw;
350 
351  /* Fixed portion of the (outer) ip4 header */
352  ip0 = &h0->ip6;
354  clib_host_to_net_u32 (6 << 28);
355  ip0->hop_limit = 255;
356  ip0->protocol = IP_PROTOCOL_UDP;
357 
358  ip0->src_address.as_u64[0] = t->local.ip6.as_u64[0];
359  ip0->src_address.as_u64[1] = t->local.ip6.as_u64[1];
360  ip0->dst_address.as_u64[0] = t->remote.ip6.as_u64[0];
361  ip0->dst_address.as_u64[1] = t->remote.ip6.as_u64[1];
362 
363  /* UDP header, randomize src port on something, maybe? */
364  h0->udp.src_port = clib_host_to_net_u16 (4790);
365  h0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_VXLAN_GPE);
366 
367  /* VXLAN header. Are we having fun yet? */
368  h0->vxlan.flags = VXLAN_GPE_FLAGS_I | VXLAN_GPE_FLAGS_P;
369  h0->vxlan.ver_res = VXLAN_GPE_VERSION;
370  if (protocol_override)
371  {
372  h0->vxlan.protocol = t->protocol;
373  }
374  else
375  {
376  h0->vxlan.protocol = protocol_override;
377  }
378  t->rewrite_size = sizeof (ip4_vxlan_gpe_header_t) + extension_size;
379  h0->vxlan.vni_res = clib_host_to_net_u32 (t->vni << 8);
380 
381  t->rewrite = rw;
382  t->encap_next_node = encap_next_node;
383  return (0);
384 }
385 
386 static uword
387 vtep_addr_ref (ip46_address_t * ip)
388 {
389  uword *vtep = ip46_address_is_ip4 (ip) ?
390  hash_get (vxlan_gpe_main.vtep4, ip->ip4.as_u32) :
391  hash_get_mem (vxlan_gpe_main.vtep6, &ip->ip6);
392  if (vtep)
393  return ++(*vtep);
394  ip46_address_is_ip4 (ip) ?
395  hash_set (vxlan_gpe_main.vtep4, ip->ip4.as_u32, 1) :
396  hash_set_mem_alloc (&vxlan_gpe_main.vtep6, &ip->ip6, 1);
397  return 1;
398 }
399 
400 static uword
401 vtep_addr_unref (ip46_address_t * ip)
402 {
403  uword *vtep = ip46_address_is_ip4 (ip) ?
404  hash_get (vxlan_gpe_main.vtep4, ip->ip4.as_u32) :
405  hash_get_mem (vxlan_gpe_main.vtep6, &ip->ip6);
406  ASSERT (vtep);
407  if (--(*vtep) != 0)
408  return *vtep;
409  ip46_address_is_ip4 (ip) ?
410  hash_unset (vxlan_gpe_main.vtep4, ip->ip4.as_u32) :
411  hash_unset_mem_free (&vxlan_gpe_main.vtep6, &ip->ip6);
412  return 0;
413 }
414 
415 /* *INDENT-OFF* */
416 typedef CLIB_PACKED(union {
417  struct {
418  fib_node_index_t mfib_entry_index;
419  adj_index_t mcast_adj_index;
420  };
421  u64 as_u64;
422 }) mcast_shared_t;
423 /* *INDENT-ON* */
424 
425 static inline mcast_shared_t
426 mcast_shared_get (ip46_address_t * ip)
427 {
429  uword *p = hash_get_mem (vxlan_gpe_main.mcast_shared, ip);
430  ASSERT (p);
431  return (mcast_shared_t)
432  {
433  .as_u64 = *p};
434 }
435 
436 static inline void
437 mcast_shared_add (ip46_address_t * remote,
438  fib_node_index_t mfei, adj_index_t ai)
439 {
440  mcast_shared_t new_ep = {
441  .mcast_adj_index = ai,
442  .mfib_entry_index = mfei,
443  };
444 
445  hash_set_mem_alloc (&vxlan_gpe_main.mcast_shared, remote, new_ep.as_u64);
446 }
447 
448 static inline void
449 mcast_shared_remove (ip46_address_t * remote)
450 {
451  mcast_shared_t ep = mcast_shared_get (remote);
452 
453  adj_unlock (ep.mcast_adj_index);
455 
456  hash_unset_mem_free (&vxlan_gpe_main.mcast_shared, remote);
457 }
458 
459 /**
460  * @brief Add or Del a VXLAN GPE tunnel
461  *
462  * @param *a
463  * @param *sw_if_index
464  *
465  * @return rc
466  *
467  */
470 {
472  vxlan_gpe_tunnel_t *t = 0;
473  vnet_main_t *vnm = ngm->vnet_main;
475  uword *p;
476  u32 hw_if_index = ~0;
477  u32 sw_if_index = ~0;
478  int rv;
479  vxlan4_gpe_tunnel_key_t key4, *key4_copy;
480  vxlan6_gpe_tunnel_key_t key6, *key6_copy;
481  u32 is_ip6 = a->is_ip6;
482 
483  if (!is_ip6)
484  {
485  key4.local = a->local.ip4.as_u32;
486  key4.remote = a->remote.ip4.as_u32;
487  key4.vni = clib_host_to_net_u32 (a->vni << 8);
488  key4.pad = 0;
489 
490  p = hash_get_mem (ngm->vxlan4_gpe_tunnel_by_key, &key4);
491  }
492  else
493  {
494  key6.local.as_u64[0] = a->local.ip6.as_u64[0];
495  key6.local.as_u64[1] = a->local.ip6.as_u64[1];
496  key6.remote.as_u64[0] = a->remote.ip6.as_u64[0];
497  key6.remote.as_u64[1] = a->remote.ip6.as_u64[1];
498  key6.vni = clib_host_to_net_u32 (a->vni << 8);
499 
500  p = hash_get_mem (ngm->vxlan6_gpe_tunnel_by_key, &key6);
501  }
502 
503  if (a->is_add)
504  {
505  l2input_main_t *l2im = &l2input_main;
506 
507  /* adding a tunnel: tunnel must not already exist */
508  if (p)
509  return VNET_API_ERROR_TUNNEL_EXIST;
510 
512  clib_memset (t, 0, sizeof (*t));
513 
514  /* copy from arg structure */
515 /* *INDENT-OFF* */
516 #define _(x) t->x = a->x;
518  if (!a->is_ip6)
520  else
522 #undef _
523 /* *INDENT-ON* */
524 
525  if (!a->is_ip6)
527 
528  if (!a->is_ip6)
529  {
531  }
532  else
533  {
535  }
536 
537  if (rv)
538  {
539  pool_put (ngm->tunnels, t);
540  return rv;
541  }
542 
543  if (!is_ip6)
544  {
545  key4_copy = clib_mem_alloc (sizeof (*key4_copy));
546  clib_memcpy_fast (key4_copy, &key4, sizeof (*key4_copy));
547  hash_set_mem (ngm->vxlan4_gpe_tunnel_by_key, key4_copy,
548  t - ngm->tunnels);
549  }
550  else
551  {
552  key6_copy = clib_mem_alloc (sizeof (*key6_copy));
553  clib_memcpy_fast (key6_copy, &key6, sizeof (*key6_copy));
554  hash_set_mem (ngm->vxlan6_gpe_tunnel_by_key, key6_copy,
555  t - ngm->tunnels);
556  }
557 
559  {
561  hw_if_index = ngm->free_vxlan_gpe_tunnel_hw_if_indices
563  _vec_len (ngm->free_vxlan_gpe_tunnel_hw_if_indices) -= 1;
564 
565  hi = vnet_get_hw_interface (vnm, hw_if_index);
566  hi->dev_instance = t - ngm->tunnels;
567  hi->hw_instance = hi->dev_instance;
568  /* clear old stats of freed tunnel before reuse */
569  sw_if_index = hi->sw_if_index;
573  sw_if_index);
576  sw_if_index);
579  sw_if_index);
581  }
582  else
583  {
584  hw_if_index = vnet_register_interface
585  (vnm, vxlan_gpe_device_class.index, t - ngm->tunnels,
586  vxlan_gpe_hw_class.index, t - ngm->tunnels);
587  hi = vnet_get_hw_interface (vnm, hw_if_index);
588  }
589 
590  /* Set vxlan-gpe tunnel output node */
591  u32 encap_index = vxlan_gpe_encap_node.index;
592  vnet_set_interface_output_node (vnm, hw_if_index, encap_index);
593 
594  t->hw_if_index = hw_if_index;
595  t->sw_if_index = sw_if_index = hi->sw_if_index;
597  ~0);
599 
600  /* setup l2 input config with l2 feature and bd 0 to drop packet */
601  vec_validate (l2im->configs, sw_if_index);
602  l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
603  l2im->configs[sw_if_index].bd_index = 0;
604 
605  vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
610  fib_prefix_t tun_remote_pfx;
612 
613  fib_prefix_from_ip46_addr (&t->remote, &tun_remote_pfx);
615  {
616  /* Unicast tunnel -
617  * source the FIB entry for the tunnel's destination
618  * and become a child thereof. The tunnel will then get poked
619  * when the forwarding for the entry updates, and the tunnel can
620  * re-stack accordingly
621  */
622  vtep_addr_ref (&t->local);
624  (t->encap_fib_index, &tun_remote_pfx, FIB_SOURCE_RR,
628  t - ngm->tunnels);
630  }
631  else
632  {
633  /* Multicast tunnel -
634  * as the same mcast group can be used for multiple mcast tunnels
635  * with different VNIs, create the output fib adjacency only if
636  * it does not already exist
637  */
638  fib_protocol_t fp = fib_ip_proto (is_ip6);
639 
640  if (vtep_addr_ref (&t->remote) == 1)
641  {
642  fib_node_index_t mfei;
643  adj_index_t ai;
644  fib_route_path_t path = {
645  .frp_proto = fib_proto_to_dpo (fp),
646  .frp_addr = zero_addr,
647  .frp_sw_if_index = 0xffffffff,
648  .frp_fib_index = ~0,
649  .frp_weight = 0,
650  .frp_flags = FIB_ROUTE_PATH_LOCAL,
651  };
652  const mfib_prefix_t mpfx = {
653  .fp_proto = fp,
654  .fp_len = (is_ip6 ? 128 : 32),
655  .fp_grp_addr = tun_remote_pfx.fp_addr,
656  };
657 
658  /*
659  * Setup the (*,G) to receive traffic on the mcast group
660  * - the forwarding interface is for-us
661  * - the accepting interface is that from the API
662  */
664  &mpfx,
666  &path, MFIB_ITF_FLAG_FORWARD);
667 
671  &mpfx,
673  &path,
675 
676  /*
677  * Create the mcast adjacency to send traffic to the group
678  */
679  ai = adj_mcast_add_or_lock (fp,
680  fib_proto_to_link (fp),
681  a->mcast_sw_if_index);
682 
683  /*
684  * create a new end-point
685  */
686  mcast_shared_add (&t->remote, mfei, ai);
687  }
688 
689  dpo_id_t dpo = DPO_INVALID;
690  mcast_shared_t ep = mcast_shared_get (&t->remote);
691 
692  /* Stack shared mcast remote mac addr rewrite on encap */
694  fib_proto_to_dpo (fp), ep.mcast_adj_index);
695 
696  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
697  dpo_reset (&dpo);
698  flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
699  }
700 
701  vnet_get_sw_interface (vnet_get_main (), sw_if_index)->flood_class =
702  flood_class;
703  }
704  else
705  {
706  /* deleting a tunnel: tunnel must exist */
707  if (!p)
708  return VNET_API_ERROR_NO_SUCH_ENTRY;
709 
710  t = pool_elt_at_index (ngm->tunnels, p[0]);
711 
712  sw_if_index = t->sw_if_index;
713  vnet_sw_interface_set_flags (vnm, t->sw_if_index, 0 /* down */ );
716  set_int_l2_mode (ngm->vlib_main, vnm, MODE_L3, t->sw_if_index, 0,
717  L2_BD_PORT_TYPE_NORMAL, 0, 0);
719 
721 
722  if (!is_ip6)
723  hash_unset (ngm->vxlan4_gpe_tunnel_by_key, key4.as_u64);
724  else
726 
728  {
729  vtep_addr_unref (&t->local);
732  }
733  else if (vtep_addr_unref (&t->remote) == 0)
734  {
736  }
737 
738  fib_node_deinit (&t->node);
739  vec_free (t->rewrite);
740  pool_put (ngm->tunnels, t);
741  }
742 
743  if (sw_if_indexp)
744  *sw_if_indexp = sw_if_index;
745 
746  return 0;
747 }
748 
749 static clib_error_t *
751  unformat_input_t * input,
752  vlib_cli_command_t * cmd)
753 {
754  unformat_input_t _line_input, *line_input = &_line_input;
755  u8 is_add = 1;
756  ip46_address_t local, remote;
757  u8 local_set = 0;
758  u8 remote_set = 0;
759  u8 grp_set = 0;
760  u8 ipv4_set = 0;
761  u8 ipv6_set = 0;
762  u32 mcast_sw_if_index = ~0;
763  u32 encap_fib_index = 0;
764  u32 decap_fib_index = 0;
765  u8 protocol = VXLAN_GPE_PROTOCOL_IP4;
766  u32 vni;
767  u8 vni_set = 0;
768  int rv;
769  u32 tmp;
772  clib_error_t *error = NULL;
773 
774  /* Get a line of input. */
775  if (!unformat_user (input, unformat_line_input, line_input))
776  return 0;
777 
778  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
779  {
780  if (unformat (line_input, "del"))
781  is_add = 0;
782  else if (unformat (line_input, "local %U",
783  unformat_ip4_address, &local.ip4))
784  {
785  local_set = 1;
786  ipv4_set = 1;
787  }
788  else if (unformat (line_input, "remote %U",
789  unformat_ip4_address, &remote.ip4))
790  {
791  remote_set = 1;
792  ipv4_set = 1;
793  }
794  else if (unformat (line_input, "local %U",
795  unformat_ip6_address, &local.ip6))
796  {
797  local_set = 1;
798  ipv6_set = 1;
799  }
800  else if (unformat (line_input, "remote %U",
801  unformat_ip6_address, &remote.ip6))
802  {
803  remote_set = 1;
804  ipv6_set = 1;
805  }
806  else if (unformat (line_input, "group %U %U",
807  unformat_ip4_address, &remote.ip4,
809  vnet_get_main (), &mcast_sw_if_index))
810  {
811  grp_set = remote_set = 1;
812  ipv4_set = 1;
813  }
814  else if (unformat (line_input, "group %U %U",
815  unformat_ip6_address, &remote.ip6,
817  vnet_get_main (), &mcast_sw_if_index))
818  {
819  grp_set = remote_set = 1;
820  ipv6_set = 1;
821  }
822  else if (unformat (line_input, "encap-vrf-id %d", &tmp))
823  {
824  if (ipv6_set)
825  encap_fib_index = fib_table_find (FIB_PROTOCOL_IP6, tmp);
826  else
827  encap_fib_index = fib_table_find (FIB_PROTOCOL_IP4, tmp);
828 
829  if (encap_fib_index == ~0)
830  {
831  error =
832  clib_error_return (0, "nonexistent encap fib id %d", tmp);
833  goto done;
834  }
835  }
836  else if (unformat (line_input, "decap-vrf-id %d", &tmp))
837  {
838  if (ipv6_set)
839  decap_fib_index = fib_table_find (FIB_PROTOCOL_IP6, tmp);
840  else
841  decap_fib_index = fib_table_find (FIB_PROTOCOL_IP4, tmp);
842 
843  if (decap_fib_index == ~0)
844  {
845  error =
846  clib_error_return (0, "nonexistent decap fib id %d", tmp);
847  goto done;
848  }
849  }
850  else if (unformat (line_input, "vni %d", &vni))
851  vni_set = 1;
852  else if (unformat (line_input, "next-ip4"))
853  protocol = VXLAN_GPE_PROTOCOL_IP4;
854  else if (unformat (line_input, "next-ip6"))
855  protocol = VXLAN_GPE_PROTOCOL_IP6;
856  else if (unformat (line_input, "next-ethernet"))
857  protocol = VXLAN_GPE_PROTOCOL_ETHERNET;
858  else if (unformat (line_input, "next-nsh"))
859  protocol = VXLAN_GPE_PROTOCOL_NSH;
860  else
861  {
862  error = clib_error_return (0, "parse error: '%U'",
863  format_unformat_error, line_input);
864  goto done;
865  }
866  }
867 
868  if (local_set == 0)
869  {
870  error = clib_error_return (0, "tunnel local address not specified");
871  goto done;
872  }
873 
874  if (remote_set == 0)
875  {
876  error = clib_error_return (0, "tunnel remote address not specified");
877  goto done;
878  }
879 
880  if (grp_set && !ip46_address_is_multicast (&remote))
881  {
882  error = clib_error_return (0, "tunnel group address not multicast");
883  goto done;
884  }
885 
886  if (grp_set == 0 && ip46_address_is_multicast (&remote))
887  {
888  error = clib_error_return (0, "remote address must be unicast");
889  goto done;
890  }
891 
892  if (grp_set && mcast_sw_if_index == ~0)
893  {
894  error = clib_error_return (0, "tunnel nonexistent multicast device");
895  goto done;
896  }
897  if (ipv4_set && ipv6_set)
898  {
899  error = clib_error_return (0, "both IPv4 and IPv6 addresses specified");
900  goto done;
901  }
902 
903  if ((ipv4_set && memcmp (&local.ip4, &remote.ip4, sizeof (local.ip4)) == 0)
904  || (ipv6_set
905  && memcmp (&local.ip6, &remote.ip6, sizeof (local.ip6)) == 0))
906  {
907  error = clib_error_return (0, "src and remote addresses are identical");
908  goto done;
909  }
910 
911  if (vni_set == 0)
912  {
913  error = clib_error_return (0, "vni not specified");
914  goto done;
915  }
916 
917  clib_memset (a, 0, sizeof (*a));
918 
919  a->is_add = is_add;
920  a->is_ip6 = ipv6_set;
921 
922 /* *INDENT-OFF* */
923 #define _(x) a->x = x;
925  if (ipv4_set)
927  else
929 #undef _
930 /* *INDENT-ON* */
931 
932  rv = vnet_vxlan_gpe_add_del_tunnel (a, &sw_if_index);
933 
934  switch (rv)
935  {
936  case 0:
938  vnet_get_main (), sw_if_index);
939  break;
940  case VNET_API_ERROR_INVALID_DECAP_NEXT:
941  error = clib_error_return (0, "invalid decap-next...");
942  goto done;
943 
944  case VNET_API_ERROR_TUNNEL_EXIST:
945  error = clib_error_return (0, "tunnel already exists...");
946  goto done;
947 
948  case VNET_API_ERROR_NO_SUCH_ENTRY:
949  error = clib_error_return (0, "tunnel does not exist...");
950  goto done;
951 
952  default:
953  error = clib_error_return
954  (0, "vnet_vxlan_gpe_add_del_tunnel returned %d", rv);
955  goto done;
956  }
957 
958 done:
959  unformat_free (line_input);
960 
961  return error;
962 }
963 
964 /*?
965  * Add or delete a VXLAN-GPE Tunnel.
966  *
967  * VXLAN-GPE provides the features needed to allow L2 bridge domains (BDs)
968  * to span multiple servers. This is done by building an L2 overlay on
969  * top of an L3 network underlay using VXLAN-GPE tunnels.
970  *
971  * This makes it possible for servers to be co-located in the same data
972  * center or be separated geographically as long as they are reachable
973  * through the underlay L3 network.
974  *
975  * You can refer to this kind of L2 overlay bridge domain as a VXLAN-GPE segment.
976  *
977  * @cliexpar
978  * Example of how to create a VXLAN-GPE Tunnel:
979  * @cliexcmd{create vxlan-gpe tunnel local 10.0.3.1 local 10.0.3.3 vni 13 encap-vrf-id 7}
980  * Example of how to delete a VXLAN Tunnel:
981  * @cliexcmd{create vxlan tunnel src 10.0.3.1 remote 10.0.3.3 vni 13 del}
982  ?*/
983 /* *INDENT-OFF* */
984 VLIB_CLI_COMMAND (create_vxlan_gpe_tunnel_command, static) = {
985  .path = "create vxlan-gpe tunnel",
986  .short_help =
987  "create vxlan-gpe tunnel local <local-addr> "
988  " {remote <remote-addr>|group <mcast-addr> <intf-name>}"
989  " vni <nn> [next-ip4][next-ip6][next-ethernet][next-nsh]"
990  " [encap-vrf-id <nn>] [decap-vrf-id <nn>] [del]\n",
992 };
993 /* *INDENT-ON* */
994 
995 /**
996  * @brief CLI function for showing VXLAN GPE tunnels
997  *
998  * @param *vm
999  * @param *input
1000  * @param *cmd
1001  *
1002  * @return error
1003  *
1004  */
1005 static clib_error_t *
1007  unformat_input_t * input,
1008  vlib_cli_command_t * cmd)
1009 {
1011  vxlan_gpe_tunnel_t *t;
1012 
1013  if (pool_elts (ngm->tunnels) == 0)
1014  vlib_cli_output (vm, "No vxlan-gpe tunnels configured.");
1015 
1016  /* *INDENT-OFF* */
1017  pool_foreach (t, ngm->tunnels,
1018  ({
1019  vlib_cli_output (vm, "%U", format_vxlan_gpe_tunnel, t);
1020  }));
1021  /* *INDENT-ON* */
1022 
1023  return 0;
1024 }
1025 
1026 /*?
1027  * Display all the VXLAN-GPE Tunnel entries.
1028  *
1029  * @cliexpar
1030  * Example of how to display the VXLAN-GPE Tunnel entries:
1031  * @cliexstart{show vxlan-gpe tunnel}
1032  * [0] local 10.0.3.1 remote 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2
1033  * @cliexend
1034  ?*/
1035 /* *INDENT-OFF* */
1036 VLIB_CLI_COMMAND (show_vxlan_gpe_tunnel_command, static) = {
1037  .path = "show vxlan-gpe",
1039 };
1040 /* *INDENT-ON* */
1041 
1042 void
1044 {
1045  if (is_ip6)
1046  vnet_feature_enable_disable ("ip6-unicast", "ip6-vxlan-gpe-bypass",
1047  sw_if_index, is_enable, 0, 0);
1048  else
1049  vnet_feature_enable_disable ("ip4-unicast", "ip4-vxlan-gpe-bypass",
1050  sw_if_index, is_enable, 0, 0);
1051 }
1052 
1053 
1054 static clib_error_t *
1056  unformat_input_t * input, vlib_cli_command_t * cmd)
1057 {
1058  unformat_input_t _line_input, *line_input = &_line_input;
1059  vnet_main_t *vnm = vnet_get_main ();
1060  clib_error_t *error = 0;
1061  u32 sw_if_index, is_enable;
1062 
1063  sw_if_index = ~0;
1064  is_enable = 1;
1065 
1066  if (!unformat_user (input, unformat_line_input, line_input))
1067  return 0;
1068 
1069  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1070  {
1071  if (unformat_user
1072  (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
1073  ;
1074  else if (unformat (line_input, "del"))
1075  is_enable = 0;
1076  else
1077  {
1078  error = unformat_parse_error (line_input);
1079  goto done;
1080  }
1081  }
1082 
1083  if (~0 == sw_if_index)
1084  {
1085  error = clib_error_return (0, "unknown interface `%U'",
1086  format_unformat_error, line_input);
1087  goto done;
1088  }
1089 
1090  vnet_int_vxlan_gpe_bypass_mode (sw_if_index, is_ip6, is_enable);
1091 
1092 done:
1093  unformat_free (line_input);
1094 
1095  return error;
1096 }
1097 
1098 static clib_error_t *
1100  unformat_input_t * input, vlib_cli_command_t * cmd)
1101 {
1102  return set_ip_vxlan_gpe_bypass (0, input, cmd);
1103 }
1104 
1105 /*?
1106  * This command adds the 'ip4-vxlan-gpe-bypass' graph node for a given interface.
1107  * By adding the IPv4 vxlan-gpe-bypass graph node to an interface, the node checks
1108  * for and validate input vxlan_gpe packet and bypass ip4-lookup, ip4-local,
1109  * ip4-udp-lookup nodes to speedup vxlan_gpe packet forwarding. This node will
1110  * cause extra overhead to for non-vxlan_gpe packets which is kept at a minimum.
1111  *
1112  * @cliexpar
1113  * @parblock
1114  * Example of graph node before ip4-vxlan-gpe-bypass is enabled:
1115  * @cliexstart{show vlib graph ip4-vxlan-gpe-bypass}
1116  * Name Next Previous
1117  * ip4-vxlan-gpe-bypass error-drop [0]
1118  * vxlan4-gpe-input [1]
1119  * ip4-lookup [2]
1120  * @cliexend
1121  *
1122  * Example of how to enable ip4-vxlan-gpe-bypass on an interface:
1123  * @cliexcmd{set interface ip vxlan-gpe-bypass GigabitEthernet2/0/0}
1124  *
1125  * Example of graph node after ip4-vxlan-gpe-bypass is enabled:
1126  * @cliexstart{show vlib graph ip4-vxlan-gpe-bypass}
1127  * Name Next Previous
1128  * ip4-vxlan-gpe-bypass error-drop [0] ip4-input
1129  * vxlan4-gpe-input [1] ip4-input-no-checksum
1130  * ip4-lookup [2]
1131  * @cliexend
1132  *
1133  * Example of how to display the feature enabled on an interface:
1134  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1135  * IP feature paths configured on GigabitEthernet2/0/0...
1136  * ...
1137  * ipv4 unicast:
1138  * ip4-vxlan-gpe-bypass
1139  * ip4-lookup
1140  * ...
1141  * @cliexend
1142  *
1143  * Example of how to disable ip4-vxlan-gpe-bypass on an interface:
1144  * @cliexcmd{set interface ip vxlan-gpe-bypass GigabitEthernet2/0/0 del}
1145  * @endparblock
1146 ?*/
1147 /* *INDENT-OFF* */
1148 VLIB_CLI_COMMAND (set_interface_ip_vxlan_gpe_bypass_command, static) = {
1149  .path = "set interface ip vxlan-gpe-bypass",
1150  .function = set_ip4_vxlan_gpe_bypass,
1151  .short_help = "set interface ip vxlan-gpe-bypass <interface> [del]",
1152 };
1153 /* *INDENT-ON* */
1154 
1155 static clib_error_t *
1157  unformat_input_t * input, vlib_cli_command_t * cmd)
1158 {
1159  return set_ip_vxlan_gpe_bypass (1, input, cmd);
1160 }
1161 
1162 /*?
1163  * This command adds the 'ip6-vxlan-gpe-bypass' graph node for a given interface.
1164  * By adding the IPv6 vxlan-gpe-bypass graph node to an interface, the node checks
1165  * for and validate input vxlan_gpe packet and bypass ip6-lookup, ip6-local,
1166  * ip6-udp-lookup nodes to speedup vxlan_gpe packet forwarding. This node will
1167  * cause extra overhead to for non-vxlan_gpe packets which is kept at a minimum.
1168  *
1169  * @cliexpar
1170  * @parblock
1171  * Example of graph node before ip6-vxlan-gpe-bypass is enabled:
1172  * @cliexstart{show vlib graph ip6-vxlan-gpe-bypass}
1173  * Name Next Previous
1174  * ip6-vxlan-gpe-bypass error-drop [0]
1175  * vxlan6-gpe-input [1]
1176  * ip6-lookup [2]
1177  * @cliexend
1178  *
1179  * Example of how to enable ip6-vxlan-gpe-bypass on an interface:
1180  * @cliexcmd{set interface ip6 vxlan-gpe-bypass GigabitEthernet2/0/0}
1181  *
1182  * Example of graph node after ip6-vxlan-gpe-bypass is enabled:
1183  * @cliexstart{show vlib graph ip6-vxlan-gpe-bypass}
1184  * Name Next Previous
1185  * ip6-vxlan-gpe-bypass error-drop [0] ip6-input
1186  * vxlan6-gpe-input [1] ip4-input-no-checksum
1187  * ip6-lookup [2]
1188  * @cliexend
1189  *
1190  * Example of how to display the feature enabled on an interface:
1191  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1192  * IP feature paths configured on GigabitEthernet2/0/0...
1193  * ...
1194  * ipv6 unicast:
1195  * ip6-vxlan-gpe-bypass
1196  * ip6-lookup
1197  * ...
1198  * @cliexend
1199  *
1200  * Example of how to disable ip6-vxlan-gpe-bypass on an interface:
1201  * @cliexcmd{set interface ip6 vxlan-gpe-bypass GigabitEthernet2/0/0 del}
1202  * @endparblock
1203 ?*/
1204 /* *INDENT-OFF* */
1205 VLIB_CLI_COMMAND (set_interface_ip6_vxlan_gpe_bypass_command, static) = {
1206  .path = "set interface ip6 vxlan-gpe-bypass",
1207  .function = set_ip6_vxlan_gpe_bypass,
1208  .short_help = "set interface ip vxlan-gpe-bypass <interface> [del]",
1209 };
1210 /* *INDENT-ON* */
1211 
1212 /* *INDENT-OFF* */
1213 VNET_FEATURE_INIT (ip4_vxlan_gpe_bypass, static) =
1214 {
1215  .arc_name = "ip4-unicast",
1216  .node_name = "ip4-vxlan-gpe-bypass",
1217  .runs_before = VNET_FEATURES ("ip4-lookup"),
1218 };
1219 
1220 VNET_FEATURE_INIT (ip6_vxlan_gpe_bypass, static) =
1221 {
1222  .arc_name = "ip6-unicast",
1223  .node_name = "ip6-vxlan-gpe-bypass",
1224  .runs_before = VNET_FEATURES ("ip6-lookup"),
1225 };
1226 /* *INDENT-ON* */
1227 
1228 /**
1229  * @brief Feature init function for VXLAN GPE
1230  *
1231  * @param *vm
1232  *
1233  * @return error
1234  *
1235  */
1236 clib_error_t *
1238 {
1240 
1241  ngm->vnet_main = vnet_get_main ();
1242  ngm->vlib_main = vm;
1243 
1245  = hash_create_mem (0, sizeof (vxlan4_gpe_tunnel_key_t), sizeof (uword));
1246 
1248  = hash_create_mem (0, sizeof (vxlan6_gpe_tunnel_key_t), sizeof (uword));
1249 
1250 
1251  ngm->mcast_shared = hash_create_mem (0,
1252  sizeof (ip46_address_t),
1253  sizeof (mcast_shared_t));
1254  ngm->vtep6 = hash_create_mem (0, sizeof (ip6_address_t), sizeof (uword));
1255 
1256  udp_register_dst_port (vm, UDP_DST_PORT_VXLAN_GPE,
1257  vxlan4_gpe_input_node.index, 1 /* is_ip4 */ );
1258  udp_register_dst_port (vm, UDP_DST_PORT_VXLAN6_GPE,
1259  vxlan6_gpe_input_node.index, 0 /* is_ip4 */ );
1260 
1261  /* Register the list of standard decap protocols supported */
1262  vxlan_gpe_register_decap_protocol (VXLAN_GPE_PROTOCOL_IP4,
1263  VXLAN_GPE_INPUT_NEXT_IP4_INPUT);
1264  vxlan_gpe_register_decap_protocol (VXLAN_GPE_PROTOCOL_IP6,
1265  VXLAN_GPE_INPUT_NEXT_IP6_INPUT);
1266  vxlan_gpe_register_decap_protocol (VXLAN_GPE_PROTOCOL_ETHERNET,
1267  VXLAN_GPE_INPUT_NEXT_L2_INPUT);
1268 
1270 
1271  return 0;
1272 }
1273 
1275 
1276 
1277 /*
1278  * fd.io coding-style-patch-verification: ON
1279  *
1280  * Local Variables:
1281  * eval: (c-set-style "gnu")
1282  * End:
1283  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:439
u32 sw_if_index
Definition: ipsec_gre.api:37
void vnet_set_interface_output_node(vnet_main_t *vnm, u32 hw_if_index, u32 node_index)
Set interface output node - for interface registered without its output/tx nodes created because its ...
void dpo_stack_from_node(u32 child_node_index, dpo_id_t *dpo, const dpo_id_t *parent)
Stack one DPO object on another, and thus establish a child parent relationship.
Definition: dpo.c:530
uword * vxlan6_gpe_tunnel_by_key
lookup IPv6 VXLAN GPE tunnel by key
Definition: vxlan_gpe.h:204
vmrglw vmrglh hi
u32 sibling_index
The tunnel is a child of the FIB entry for its destination.
Definition: vxlan_gpe.h:163
Recursive resolution source.
Definition: fib_entry.h:125
Contribute an object that is to be used to forward IP6 packets.
Definition: fib_types.h:113
#define hash_set(h, key, value)
Definition: hash.h:255
l2_input_config_t * configs
Definition: l2_input.h:61
u32 flags
Definition: vhost_user.h:115
static fib_node_back_walk_rc_t vxlan_gpe_tunnel_back_walk(fib_node_t *node, fib_node_back_walk_ctx_t *ctx)
Function definition to backwalk a FIB node - Here we will restack the new dpo of VXLAN_GPE DIP to enc...
Definition: vxlan_gpe.c:206
static void vxlan_gpe_tunnel_last_lock_gone(fib_node_t *node)
Function definition to inform the FIB node that its last lock has gone.
Definition: vxlan_gpe.c:230
u32 flags
flags
Definition: vxlan_gpe.h:137
clib_error_t * vxlan_gpe_init(vlib_main_t *vm)
Feature init function for VXLAN GPE.
Definition: vxlan_gpe.c:1237
#define hash_unset(h, key)
Definition: hash.h:261
A representation of a path as described by a route producer.
Definition: fib_types.h:470
ip4_address_t src_address
Definition: ip4_packet.h:170
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
vlib_node_registration_t vxlan4_gpe_input_node
(constructor) VLIB_REGISTER_NODE (vxlan4_gpe_input_node)
Definition: decap.c:744
vnet_interface_main_t interface_main
Definition: vnet.h:56
void fib_node_init(fib_node_t *node, fib_node_type_t type)
Definition: fib_node.c:185
u64 as_u64
Definition: bihash_doc.h:63
u32 fib_entry_child_add(fib_node_index_t fib_entry_index, fib_node_type_t child_type, fib_node_index_t child_index)
Definition: fib_entry.c:555
u64 as_u64[2]
Definition: ip6_packet.h:51
unsigned long u64
Definition: types.h:89
#define foreach_copy_ipv4
Definition: vxlan_gpe.c:256
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
uword * mcast_shared
Definition: vxlan_gpe.h:211
#define NULL
Definition: clib.h:58
u32 * tunnel_index_by_sw_if_index
Mapping from sw_if_index to tunnel index.
Definition: vxlan_gpe.h:216
enum fib_node_back_walk_rc_t_ fib_node_back_walk_rc_t
Return code from a back walk function.
void fib_entry_contribute_forwarding(fib_node_index_t fib_entry_index, fib_forward_chain_type_t fct, dpo_id_t *dpo)
Definition: fib_entry.c:447
VXLAN GPE definitions.
u32 mcast_sw_if_index
Definition: vxlan_gbp.api:40
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
void fib_entry_child_remove(fib_node_index_t fib_entry_index, u32 sibling_index)
Definition: fib_entry.c:566
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:522
int vxlan6_gpe_rewrite(vxlan_gpe_tunnel_t *t, u32 extension_size, u8 protocol_override, uword encap_next_node)
Calculate IPv6 VXLAN GPE rewrite header.
Definition: vxlan_gpe.c:336
vlib_node_registration_t vxlan6_gpe_input_node
(constructor) VLIB_REGISTER_NODE (vxlan6_gpe_input_node)
Definition: decap.c:766
typedef CLIB_PACKED(union{struct{fib_node_index_t mfib_entry_index;adj_index_t mcast_adj_index;};u64 as_u64;})
Definition: vxlan_gpe.c:416
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:983
format_function_t format_ip46_address
Definition: format.h:61
Contribute an object that is to be used to forward IP4 packets.
Definition: fib_types.h:109
#define hash_set_mem(h, key, value)
Definition: hash.h:275
clib_memset(h->entries, 0, sizeof(h->entries[0])*entries)
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:65
void fib_node_deinit(fib_node_t *node)
Definition: fib_node.c:197
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
dpo_proto_t frp_proto
The protocol of the address below.
Definition: fib_types.h:475
unformat_function_t unformat_vnet_sw_interface
#define vec_validate_aligned(V, I, A)
Make sure vector is long enough for given index (no header, specified alignment)
Definition: vec.h:450
int vnet_vxlan_gpe_add_del_tunnel(vnet_vxlan_gpe_add_del_tunnel_args_t *a, u32 *sw_if_indexp)
Add or Del a VXLAN GPE tunnel.
Definition: vxlan_gpe.c:469
#define VXLAN_GPE_FLAGS_P
ip6_address_t src_address
Definition: ip6_packet.h:385
format_function_t format_vnet_sw_if_index_name
unsigned char u8
Definition: types.h:56
vnet_main_t * vnet_main
State convenience vnet_main_t.
Definition: vxlan_gpe.h:221
enum fib_protocol_t_ fib_protocol_t
Protocol Type.
static uword ip46_address_is_multicast(const ip46_address_t *a)
Definition: ip6_packet.h:178
#define VXLAN_GPE_VERSION
void fib_node_register_type(fib_node_type_t type, const fib_node_vft_t *vft)
fib_node_register_type
Definition: fib_node.c:60
#define VXLAN_GPE_FLAGS_I
#define foreach_gpe_copy_field
Definition: vxlan_gpe.c:249
vnet_flood_class_t flood_class
Definition: interface.h:709
static fib_node_t * vxlan_gpe_tunnel_fib_node_get(fib_node_index_t index)
Function definition to get a FIB node from its index.
Definition: vxlan_gpe.c:216
u8 * format_vxlan_gpe_tunnel(u8 *s, va_list *args)
Format function for VXLAN GPE tunnel.
Definition: vxlan_gpe.c:83
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:493
unformat_function_t unformat_ip4_address
Definition: format.h:70
u32 frp_sw_if_index
The interface.
Definition: fib_types.h:505
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
ip46_address_t local
tunnel local address
Definition: vxlan_gpe.h:116
static u8 * format_vxlan_gpe_header_with_length(u8 *s, va_list *args)
Formatting function for tracing VXLAN GPE with length.
Definition: vxlan_gpe.c:164
void mfib_table_entry_delete_index(fib_node_index_t mfib_entry_index, mfib_source_t source)
Delete a FIB entry.
Definition: mfib_table.c:464
ip4_address_t dst_address
Definition: ip4_packet.h:170
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:824
u8 * format_vxlan_gpe_encap_trace(u8 *s, va_list *args)
Trace of packets encapsulated in VXLAN GPE.
Definition: encap.c:69
static uword vtep_addr_unref(ip46_address_t *ip)
Definition: vxlan_gpe.c:401
Aggregrate type for a prefix.
Definition: fib_types.h:203
#define clib_error_return(e, args...)
Definition: error.h:99
fib_node_index_t mfib_table_entry_path_update(u32 fib_index, const mfib_prefix_t *prefix, mfib_source_t source, const fib_route_path_t *rpath, mfib_itf_flags_t itf_flags)
Add n paths to an entry (aka route) in the FIB.
Definition: mfib_table.c:290
void adj_unlock(adj_index_t adj_index)
Release a reference counting lock on the adjacency.
Definition: adj.c:318
unsigned int u32
Definition: types.h:88
u32 fib_table_find(fib_protocol_t proto, u32 table_id)
Get the index of the FIB for a Table-ID.
Definition: fib_table.c:1064
void vxlan_gpe_register_decap_protocol(u8 protocol_id, uword next_node_index)
Definition: decap.c:699
u32 vnet_register_interface(vnet_main_t *vnm, u32 dev_class_index, u32 dev_instance, u32 hw_class_index, u32 hw_instance)
Definition: interface.c:740
fib_node_index_t fib_entry_index
Definition: vxlan_gpe.h:154
u8 * rewrite
Rewrite string.
Definition: vxlan_gpe.h:108
VNET_FEATURE_INIT(ip4_vxlan_gpe_bypass, static)
static uword vtep_addr_ref(ip46_address_t *ip)
Definition: vxlan_gpe.c:387
Definition: fib_entry.h:275
unformat_function_t unformat_line_input
Definition: format.h:282
void vnet_int_vxlan_gpe_bypass_mode(u32 sw_if_index, u8 is_ip6, u8 is_enable)
Definition: vxlan_gpe.c:1043
The identity of a DPO is a combination of its type and its instance number/index of objects of that t...
Definition: dpo.h:168
#define hash_create_mem(elts, key_bytes, value_bytes)
Definition: hash.h:661
#define hash_get(h, key)
Definition: hash.h:249
int vxlan4_gpe_rewrite(vxlan_gpe_tunnel_t *t, u32 extension_size, u8 protocol_override, uword encap_next_node)
Calculate IPv4 VXLAN GPE rewrite header.
Definition: vxlan_gpe.c:278
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:514
static void vlib_zero_combined_counter(vlib_combined_counter_main_t *cm, u32 index)
Clear a combined counter Clears the set of per-thread counters.
Definition: counter.h:285
ip46_address_t fp_addr
The address type is not deriveable from the fp_addr member.
Definition: fib_types.h:226
Struct for VXLAN GPE tunnel.
Definition: vxlan_gpe.h:102
long ctx[MAX_CONNS]
Definition: main.c:144
struct _unformat_input_t unformat_input_t
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:286
static void mcast_shared_remove(ip46_address_t *remote)
Definition: vxlan_gpe.c:449
vxlan_gpe_main_t vxlan_gpe_main
Definition: vxlan_gpe.c:45
static vxlan_gpe_tunnel_t * vxlan_gpe_tunnel_from_fib_node(fib_node_t *node)
Definition: vxlan_gpe.c:193
vlib_main_t * vlib_main
State convenience vlib_main_t.
Definition: vxlan_gpe.h:219
#define PREDICT_FALSE(x)
Definition: clib.h:111
vnet_sw_interface_flags_t flags
Definition: interface.h:684
u8 protocol
encapsulated protocol
Definition: vxlan_gpe.h:111
vlib_simple_counter_main_t * sw_if_counters
Definition: interface.h:823
static clib_error_t * set_ip4_vxlan_gpe_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan_gpe.c:1099
fib_node_type_t fn_type
The node&#39;s type.
Definition: fib_node.h:295
An node in the FIB graph.
Definition: fib_node.h:291
ip46_address_t remote
tunnel remote address
Definition: vxlan_gpe.h:118
u32 vni
VXLAN GPE VNI in HOST byte order, shifted left 8 bits.
Definition: vxlan_gpe.h:129
u8 len
Definition: ip_types.api:49
#define ip46_address_is_ip4(ip46)
Definition: ip6_packet.h:88
unformat_function_t unformat_ip6_address
Definition: format.h:91
#define pool_get_aligned(P, E, A)
Allocate an object E from a pool P with alignment A.
Definition: pool.h:230
fib_node_index_t fib_table_entry_special_add(u32 fib_index, const fib_prefix_t *prefix, fib_source_t source, fib_entry_flag_t flags)
Add a &#39;special&#39; entry to the FIB.
Definition: fib_table.c:388
static clib_error_t * set_ip6_vxlan_gpe_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan_gpe.c:1156
Struct for VXLAN GPE add/del args.
Definition: vxlan_gpe.h:236
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
vlib_main_t * vm
Definition: buffer.c:312
void fib_table_entry_delete_index(fib_node_index_t fib_entry_index, fib_source_t source)
Delete a FIB entry.
Definition: fib_table.c:877
VNET_DEVICE_CLASS(vxlan_gpe_device_class, static)
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:341
vnet_flood_class_t
Definition: interface.h:625
fib_node_get_t fnv_get
Definition: fib_node.h:279
static void vnet_interface_counter_unlock(vnet_interface_main_t *im)
Definition: interface.h:855
fib_node_t node
Linkage into the FIB object graph.
Definition: vxlan_gpe.h:148
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:30
u32 adj_index_t
An index for adjacencies.
Definition: adj_types.h:30
static u8 * format_vxlan_gpe_name(u8 *s, va_list *args)
Naming for VXLAN GPE tunnel.
Definition: vxlan_gpe.c:117
void fib_prefix_from_ip46_addr(const ip46_address_t *addr, fib_prefix_t *pfx)
Host prefix from ip.
Definition: fib_types.c:80
void dpo_set(dpo_id_t *dpo, dpo_type_t type, dpo_proto_t proto, index_t index)
Set/create a DPO ID The DPO will be locked.
Definition: dpo.c:185
Aggregrate type for a prefix.
Definition: mfib_types.h:24
u8 * default_build_rewrite(vnet_main_t *vnm, u32 sw_if_index, vnet_link_t link_type, const void *dst_address)
Return a complete, zero-length (aka dummy) rewrite.
Definition: interface.c:1556
Context passed between object during a back walk.
Definition: fib_node.h:204
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:155
static void vnet_interface_counter_lock(vnet_interface_main_t *im)
Definition: interface.h:847
static clib_error_t * vxlan_gpe_add_del_tunnel_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan_gpe.c:750
#define ASSERT(truth)
VNET_HW_INTERFACE_CLASS(vxlan_gpe_hw_class)
static clib_error_t * vxlan_gpe_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
CLI function for VXLAN GPE admin up/down.
Definition: vxlan_gpe.c:134
u8 rewrite_size
rewrite size for dynamic plugins like iOAM
Definition: vxlan_gpe.h:140
Struct for VXLAN GPE node state.
Definition: vxlan_gpe.h:196
u8 is_add
Definition: ipsec_gre.api:36
dpo_id_t next_dpo
Definition: vxlan_gpe.h:114
u32 set_int_l2_mode(vlib_main_t *vm, vnet_main_t *vnet_main, u32 mode, u32 sw_if_index, u32 bd_index, l2_bd_port_type_t port_type, u32 shg, u32 xc_sw_if_index)
Set the subinterface to run in l2 or l3 mode.
Definition: l2_input.c:589
enum fib_forward_chain_type_t_ fib_forward_chain_type_t
FIB output chain type.
fib_route_path_flags_t frp_flags
flags on the path
Definition: fib_types.h:571
static void vlib_zero_simple_counter(vlib_simple_counter_main_t *cm, u32 index)
Clear a simple counter Clears the set of per-thread u16 counters, and the u64 counter.
Definition: counter.h:139
dpo_proto_t fib_proto_to_dpo(fib_protocol_t fib_proto)
Definition: fib_types.c:237
static u8 * format_decap_next(u8 *s, va_list *args)
Definition: vxlan_gpe.c:48
static void * clib_mem_alloc(uword size)
Definition: mem.h:132
#define VNET_FEATURES(...)
Definition: feature.h:435
vxlan_gpe_tunnel_t * tunnels
vector of encap tunnel instances
Definition: vxlan_gpe.h:199
#define unformat_parse_error(input)
Definition: format.h:268
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:372
fib_protocol_t fp_proto
protocol type
Definition: mfib_types.h:33
uword * vxlan4_gpe_tunnel_by_key
lookup IPv4 VXLAN GPE tunnel by key
Definition: vxlan_gpe.h:202
l2input_main_t l2input_main
Definition: l2_input.c:128
u32 decap_fib_index
FIB indices - inner IP packet lookup here.
Definition: vxlan_gpe.h:126
index_t dpoi_index
the index of objects of that type
Definition: dpo.h:184
A for-us/local path.
Definition: fib_types.h:332
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
static fib_protocol_t fib_ip_proto(bool is_ip6)
Convert from boolean is_ip6 to FIB protocol.
Definition: fib_types.h:80
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, vnet_hw_interface_flags_t flags)
Definition: interface.c:504
static clib_error_t * show_vxlan_gpe_tunnel_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
CLI function for showing VXLAN GPE tunnels.
Definition: vxlan_gpe.c:1006
u64 uword
Definition: types.h:112
static void unformat_free(unformat_input_t *i)
Definition: format.h:162
static void hash_set_mem_alloc(uword **h, void *key, uword v)
Definition: hash.h:279
u32 vni
Definition: vxlan_gbp.api:42
#define DPO_INVALID
An initialiser for DPOs declared on the stack.
Definition: dpo.h:195
u32 hw_if_index
vnet intfc hw_if_index
Definition: vxlan_gpe.h:132
static void vxlan_gpe_tunnel_restack_dpo(vxlan_gpe_tunnel_t *t)
Definition: vxlan_gpe.c:180
#define hash_get_mem(h, key)
Definition: hash.h:269
static void hash_unset_mem_free(uword **h, void *key)
Definition: hash.h:295
A FIB graph nodes virtual function table.
Definition: fib_node.h:278
u32 encap_fib_index
FIB indices - tunnel partner lookup here.
Definition: vxlan_gpe.h:124
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
clib_error_t * vnet_sw_interface_set_flags(vnet_main_t *vnm, u32 sw_if_index, vnet_sw_interface_flags_t flags)
Definition: interface.c:513
uword encap_next_node
Next node after VxLAN-GPE encap.
Definition: vxlan_gpe.h:143
u32 sw_if_index
vnet intfc sw_if_index
Definition: vxlan_gpe.h:134
adj_index_t adj_mcast_add_or_lock(fib_protocol_t proto, vnet_link_t link_type, u32 sw_if_index)
Mcast Adjacency.
Definition: adj_mcast.c:51
void dpo_reset(dpo_id_t *dpo)
reset a DPO ID The DPO will be unlocked.
Definition: dpo.c:231
vnet_link_t fib_proto_to_link(fib_protocol_t proto)
Convert from a protocol to a link type.
Definition: fib_types.c:271
static void mcast_shared_add(ip46_address_t *remote, fib_node_index_t mfei, adj_index_t ai)
Definition: vxlan_gpe.c:437
void udp_register_dst_port(vlib_main_t *vm, udp_dst_port_t dst_port, u32 node_index, u8 is_ip4)
Definition: udp_local.c:484
u8 ip_version_and_header_length
Definition: ip4_packet.h:138
vlib_node_registration_t vxlan_gpe_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan_gpe_encap_node)
Definition: encap.c:407
#define vec_validate_init_empty(V, I, INIT)
Make sure vector is long enough for given index and initialize empty space (no header, unspecified alignment)
Definition: vec.h:486
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
#define VXLAN_GPE_TUNNEL_IS_IPV4
Flags for vxlan_gpe_tunnel_t.
Definition: vxlan_gpe.h:168
static clib_error_t * set_ip_vxlan_gpe_bypass(u32 is_ip6, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan_gpe.c:1055
#define foreach_copy_ipv6
Definition: vxlan_gpe.c:261
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:725
static u16 ip4_header_checksum(ip4_header_t *i)
Definition: ip4_packet.h:247
const ip46_address_t zero_addr
Definition: lookup.c:319
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
int vnet_feature_enable_disable(const char *arc_name, const char *node_name, u32 sw_if_index, int enable_disable, void *feature_config, u32 n_feature_config_bytes)
Definition: feature.c:274
u8 protocol
Definition: ipsec.api:96
ip6_address_t dst_address
Definition: ip6_packet.h:385
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:170
u32 * free_vxlan_gpe_tunnel_hw_if_indices
Free vlib hw_if_indices.
Definition: vxlan_gpe.h:213
#define MODE_L3
Definition: l2_input.h:210
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128