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Vector Packet Processing
vxlan_gbp.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  */
16 #include <vnet/ip/format.h>
17 #include <vnet/fib/fib_entry.h>
18 #include <vnet/fib/fib_table.h>
20 #include <vnet/mfib/mfib_table.h>
21 #include <vnet/adj/adj_mcast.h>
22 #include <vnet/adj/rewrite.h>
23 #include <vnet/interface.h>
24 #include <vlib/vlib.h>
25 
26 /**
27  * @file
28  * @brief VXLAN GBP.
29  *
30  * VXLAN GBP provides the features of vxlan and carry group policy id.
31  */
33 
35 
36 u8 *
37 format_vxlan_gbp_tunnel_mode (u8 * s, va_list * args)
38 {
40 
41  switch (mode)
42  {
44  s = format (s, "L2");
45  break;
47  s = format (s, "L3");
48  break;
49  }
50  return (s);
51 }
52 
53 u8 *
54 format_vxlan_gbp_tunnel (u8 * s, va_list * args)
55 {
56  vxlan_gbp_tunnel_t *t = va_arg (*args, vxlan_gbp_tunnel_t *);
57 
58  s = format (s,
59  "[%d] instance %d src %U dst %U vni %d fib-idx %d"
60  " sw-if-idx %d mode %U ",
64  t->vni, t->encap_fib_index, t->sw_if_index,
66 
67  s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index);
68 
70  s = format (s, "mcast-sw-if-idx %d ", t->mcast_sw_if_index);
71 
72  return s;
73 }
74 
75 static u8 *
76 format_vxlan_gbp_name (u8 * s, va_list * args)
77 {
78  u32 dev_instance = va_arg (*args, u32);
81 
82  if (dev_instance == ~0)
83  return format (s, "<cached-unused>");
84 
85  if (dev_instance >= vec_len (vxm->tunnels))
86  return format (s, "<improperly-referenced>");
87 
88  t = pool_elt_at_index (vxm->tunnels, dev_instance);
89 
90  return format (s, "vxlan_gbp_tunnel%d", t->user_instance);
91 }
92 
93 static clib_error_t *
95  u32 flags)
96 {
97  u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
99  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
100 
101  return /* no error */ 0;
102 }
103 
104 /* *INDENT-OFF* */
105 VNET_DEVICE_CLASS (vxlan_gbp_device_class, static) = {
106  .name = "VXLAN-GBP",
107  .format_device_name = format_vxlan_gbp_name,
108  .format_tx_trace = format_vxlan_gbp_encap_trace,
109  .admin_up_down_function = vxlan_gbp_interface_admin_up_down,
110 };
111 /* *INDENT-ON* */
112 
113 static u8 *
115 {
116  u32 dev_instance = va_arg (*args, u32);
117  s = format (s, "unimplemented dev %u", dev_instance);
118  return s;
119 }
120 
121 /* *INDENT-OFF* */
122 VNET_HW_INTERFACE_CLASS (vxlan_gbp_hw_class) = {
123  .name = "VXLAN-GBP",
124  .format_header = format_vxlan_gbp_header_with_length,
125  .build_rewrite = default_build_rewrite,
126 };
127 /* *INDENT-ON* */
128 
129 static void
131 {
132  u8 is_ip4 = ip46_address_is_ip4 (&t->dst);
133  dpo_id_t dpo = DPO_INVALID;
134  fib_forward_chain_type_t forw_type = is_ip4 ?
136 
137  fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
138 
139  /* vxlan_gbp uses the payload hash as the udp source port
140  * hence the packet's hash is unknown
141  * skip single bucket load balance dpo's */
142  while (DPO_LOAD_BALANCE == dpo.dpoi_type)
143  {
145  if (lb->lb_n_buckets > 1)
146  break;
147 
148  dpo_copy (&dpo, load_balance_get_bucket_i (lb, 0));
149  }
150 
151  u32 encap_index = is_ip4 ?
153  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
154  dpo_reset (&dpo);
155 }
156 
157 static vxlan_gbp_tunnel_t *
159 {
161  return ((vxlan_gbp_tunnel_t *) (((char *) node) -
163  node)));
164 }
165 
166 /**
167  * Function definition to backwalk a FIB node -
168  * Here we will restack the new dpo of VXLAN DIP to encap node.
169  */
172 {
175 }
176 
177 /**
178  * Function definition to get a FIB node from its index
179  */
180 static fib_node_t *
182 {
185 
186  t = pool_elt_at_index (vxm->tunnels, index);
187 
188  return (&t->node);
189 }
190 
191 /**
192  * Function definition to inform the FIB node that its last lock has gone.
193  */
194 static void
196 {
197  /*
198  * The VXLAN GBP tunnel is a root of the graph. As such
199  * it never has children and thus is never locked.
200  */
201  ASSERT (0);
202 }
203 
204 /*
205  * Virtual function table registered by VXLAN GBP tunnels
206  * for participation in the FIB object graph.
207  */
208 const static fib_node_vft_t vxlan_gbp_vft = {
210  .fnv_last_lock = vxlan_gbp_tunnel_last_lock_gone,
211  .fnv_back_walk = vxlan_gbp_tunnel_back_walk,
212 };
213 
214 
215 #define foreach_copy_field \
216 _(vni) \
217 _(mode) \
218 _(mcast_sw_if_index) \
219 _(encap_fib_index) \
220 _(src) \
221 _(dst)
222 
223 static void
225 {
226  union
227  {
228  ip4_vxlan_gbp_header_t h4;
229  ip6_vxlan_gbp_header_t h6;
230  } h;
231  int len = is_ip6 ? sizeof h.h6 : sizeof h.h4;
232 
233  udp_header_t *udp;
234  vxlan_gbp_header_t *vxlan_gbp;
235  /* Fixed portion of the (outer) ip header */
236 
237  clib_memset (&h, 0, sizeof (h));
238  if (!is_ip6)
239  {
240  ip4_header_t *ip = &h.h4.ip4;
241  udp = &h.h4.udp, vxlan_gbp = &h.h4.vxlan_gbp;
242  ip->ip_version_and_header_length = 0x45;
243  ip->ttl = 254;
244  ip->protocol = IP_PROTOCOL_UDP;
245 
246  ip->src_address = t->src.ip4;
247  ip->dst_address = t->dst.ip4;
248 
249  /* we fix up the ip4 header length and checksum after-the-fact */
250  ip->checksum = ip4_header_checksum (ip);
251  }
252  else
253  {
254  ip6_header_t *ip = &h.h6.ip6;
255  udp = &h.h6.udp, vxlan_gbp = &h.h6.vxlan_gbp;
257  clib_host_to_net_u32 (6 << 28);
258  ip->hop_limit = 255;
259  ip->protocol = IP_PROTOCOL_UDP;
260 
261  ip->src_address = t->src.ip6;
262  ip->dst_address = t->dst.ip6;
263  }
264 
265  /* UDP header, randomize src port on something, maybe? */
266  udp->src_port = clib_host_to_net_u16 (47789);
267  udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_vxlan_gbp);
268 
269  /* VXLAN header */
270  vxlan_gbp_set_header (vxlan_gbp, t->vni);
271  vnet_rewrite_set_data (*t, &h, len);
272 }
273 
274 static uword
275 vtep_addr_ref (ip46_address_t * ip)
276 {
277  uword *vtep = ip46_address_is_ip4 (ip) ?
278  hash_get (vxlan_gbp_main.vtep4, ip->ip4.as_u32) :
279  hash_get_mem (vxlan_gbp_main.vtep6, &ip->ip6);
280  if (vtep)
281  return ++(*vtep);
282  ip46_address_is_ip4 (ip) ?
283  hash_set (vxlan_gbp_main.vtep4, ip->ip4.as_u32, 1) :
284  hash_set_mem_alloc (&vxlan_gbp_main.vtep6, &ip->ip6, 1);
285  return 1;
286 }
287 
288 static uword
289 vtep_addr_unref (ip46_address_t * ip)
290 {
291  uword *vtep = ip46_address_is_ip4 (ip) ?
292  hash_get (vxlan_gbp_main.vtep4, ip->ip4.as_u32) :
293  hash_get_mem (vxlan_gbp_main.vtep6, &ip->ip6);
294  ALWAYS_ASSERT (vtep);
295  if (--(*vtep) != 0)
296  return *vtep;
297  ip46_address_is_ip4 (ip) ?
298  hash_unset (vxlan_gbp_main.vtep4, ip->ip4.as_u32) :
299  hash_unset_mem_free (&vxlan_gbp_main.vtep6, &ip->ip6);
300  return 0;
301 }
302 
303 /* *INDENT-OFF* */
304 typedef CLIB_PACKED(union
305 {
306  struct
307  {
308  fib_node_index_t mfib_entry_index;
309  adj_index_t mcast_adj_index;
310  };
311  u64 as_u64;
312 }) mcast_shared_t;
313 /* *INDENT-ON* */
314 
315 static inline mcast_shared_t
316 mcast_shared_get (ip46_address_t * ip)
317 {
319  uword *p = hash_get_mem (vxlan_gbp_main.mcast_shared, ip);
320  ASSERT (p);
321  mcast_shared_t ret = {.as_u64 = *p };
322  return ret;
323 }
324 
325 static inline void
326 mcast_shared_add (ip46_address_t * dst, fib_node_index_t mfei, adj_index_t ai)
327 {
328  mcast_shared_t new_ep = {
329  .mcast_adj_index = ai,
330  .mfib_entry_index = mfei,
331  };
332 
333  hash_set_mem_alloc (&vxlan_gbp_main.mcast_shared, dst, new_ep.as_u64);
334 }
335 
336 static inline void
337 mcast_shared_remove (ip46_address_t * dst)
338 {
339  mcast_shared_t ep = mcast_shared_get (dst);
340 
341  adj_unlock (ep.mcast_adj_index);
343 
344  hash_unset_mem_free (&vxlan_gbp_main.mcast_shared, dst);
345 }
346 
347 inline void
349 {
351 
352  if (vxm->udp_ports_registered == 0)
353  {
354  udp_register_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan_gbp,
355  vxlan4_gbp_input_node.index, /* is_ip4 */ 1);
356  udp_register_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan6_gbp,
357  vxlan6_gbp_input_node.index, /* is_ip4 */ 0);
358  }
359  /*
360  * Counts the number of vxlan_gbp tunnels
361  */
362  vxm->udp_ports_registered += 1;
363 }
364 
365 inline void
367 {
369 
370  ASSERT (vxm->udp_ports_registered != 0);
371 
372  if (vxm->udp_ports_registered == 1)
373  {
374  udp_unregister_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan_gbp,
375  /* is_ip4 */ 1);
376  udp_unregister_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan6_gbp,
377  /* is_ip4 */ 0);
378  }
379 
380  vxm->udp_ports_registered -= 1;
381 }
382 
385 {
387  vxlan_gbp_tunnel_t *t = 0;
388  vnet_main_t *vnm = vxm->vnet_main;
389  u64 *p;
390  u32 sw_if_index = ~0;
393  u32 is_ip6 = a->is_ip6;
394 
395  int not_found;
396  if (!is_ip6)
397  {
398  key4.key[0] = ip46_address_is_multicast (&a->dst) ?
399  a->dst.ip4.as_u32 :
400  a->dst.ip4.as_u32 | (((u64) a->src.ip4.as_u32) << 32);
401  key4.key[1] = (((u64) a->encap_fib_index) << 32)
402  | clib_host_to_net_u32 (a->vni << 8);
403  not_found =
404  clib_bihash_search_inline_16_8 (&vxm->vxlan4_gbp_tunnel_by_key,
405  &key4);
406  p = &key4.value;
407  }
408  else
409  {
410  key6.key[0] = a->dst.ip6.as_u64[0];
411  key6.key[1] = a->dst.ip6.as_u64[1];
412  key6.key[2] = (((u64) a->encap_fib_index) << 32)
413  | clib_host_to_net_u32 (a->vni << 8);
414  not_found =
415  clib_bihash_search_inline_24_8 (&vxm->vxlan6_gbp_tunnel_by_key,
416  &key6);
417  p = &key6.value;
418  }
419 
420  if (not_found)
421  p = 0;
422 
423  if (a->is_add)
424  {
425  l2input_main_t *l2im = &l2input_main;
426  u32 dev_instance; /* real dev instance tunnel index */
427  u32 user_instance; /* request and actual instance number */
428 
429  /* adding a tunnel: tunnel must not already exist */
430  if (p)
431  {
432  t = pool_elt_at_index (vxm->tunnels, *p);
433  *sw_if_indexp = t->sw_if_index;
434  return VNET_API_ERROR_TUNNEL_EXIST;
435  }
437  clib_memset (t, 0, sizeof (*t));
438  dev_instance = t - vxm->tunnels;
439 
440  /* copy from arg structure */
441 #define _(x) t->x = a->x;
443 #undef _
444 
445  vxlan_gbp_rewrite (t, is_ip6);
446  /*
447  * Reconcile the real dev_instance and a possible requested instance.
448  */
449  user_instance = a->instance;
450  if (user_instance == ~0)
451  user_instance = dev_instance;
452  if (hash_get (vxm->instance_used, user_instance))
453  {
454  pool_put (vxm->tunnels, t);
455  return VNET_API_ERROR_INSTANCE_IN_USE;
456  }
457  hash_set (vxm->instance_used, user_instance, 1);
458 
459  t->dev_instance = dev_instance; /* actual */
460  t->user_instance = user_instance; /* name */
461 
462  /* copy the key */
463  int add_failed;
464  if (is_ip6)
465  {
466  key6.value = (u64) dev_instance;
467  add_failed =
468  clib_bihash_add_del_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, &key6,
469  1 /*add */ );
470  }
471  else
472  {
473  key4.value = (u64) dev_instance;
474  add_failed =
475  clib_bihash_add_del_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, &key4,
476  1 /*add */ );
477  }
478 
479  if (add_failed)
480  {
481  pool_put (vxm->tunnels, t);
482  return VNET_API_ERROR_INVALID_REGISTRATION;
483  }
484 
486 
488  (vnm, vxlan_gbp_device_class.index, dev_instance,
489  vxlan_gbp_hw_class.index, dev_instance);
491 
492  /* Set vxlan_gbp tunnel output node */
493  u32 encap_index = !is_ip6 ?
495  vnet_set_interface_output_node (vnm, t->hw_if_index, encap_index);
496 
497  t->sw_if_index = sw_if_index = hi->sw_if_index;
498 
499  if (VXLAN_GBP_TUNNEL_MODE_L3 == t->mode)
500  {
503  }
504 
506  ~0);
507  vxm->tunnel_index_by_sw_if_index[sw_if_index] = dev_instance;
508 
509  /* setup l2 input config with l2 feature and bd 0 to drop packet */
510  vec_validate (l2im->configs, sw_if_index);
511  l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
512  l2im->configs[sw_if_index].bd_index = 0;
513 
514  vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
516  vnet_sw_interface_set_flags (vnm, sw_if_index,
518 
520  fib_prefix_t tun_dst_pfx;
522 
523  fib_prefix_from_ip46_addr (&t->dst, &tun_dst_pfx);
524  if (!ip46_address_is_multicast (&t->dst))
525  {
526  /* Unicast tunnel -
527  * source the FIB entry for the tunnel's destination
528  * and become a child thereof. The tunnel will then get poked
529  * when the forwarding for the entry updates, and the tunnel can
530  * re-stack accordingly
531  */
532  vtep_addr_ref (&t->src);
534  &tun_dst_pfx,
536  dev_instance,
537  &t->sibling_index);
539  }
540  else
541  {
542  /* Multicast tunnel -
543  * as the same mcast group can be used for multiple mcast tunnels
544  * with different VNIs, create the output fib adjacency only if
545  * it does not already exist
546  */
547  fib_protocol_t fp = fib_ip_proto (is_ip6);
548 
549  if (vtep_addr_ref (&t->dst) == 1)
550  {
551  fib_node_index_t mfei;
552  adj_index_t ai;
553  fib_route_path_t path = {
554  .frp_proto = fib_proto_to_dpo (fp),
555  .frp_addr = zero_addr,
556  .frp_sw_if_index = 0xffffffff,
557  .frp_fib_index = ~0,
558  .frp_weight = 0,
559  .frp_flags = FIB_ROUTE_PATH_LOCAL,
560  .frp_mitf_flags = MFIB_ITF_FLAG_FORWARD,
561  };
562  const mfib_prefix_t mpfx = {
563  .fp_proto = fp,
564  .fp_len = (is_ip6 ? 128 : 32),
565  .fp_grp_addr = tun_dst_pfx.fp_addr,
566  };
567 
568  /*
569  * Setup the (*,G) to receive traffic on the mcast group
570  * - the forwarding interface is for-us
571  * - the accepting interface is that from the API
572  */
574  &mpfx,
575  MFIB_SOURCE_VXLAN_GBP, &path);
576 
581  &mpfx,
583  &path);
584 
585  /*
586  * Create the mcast adjacency to send traffic to the group
587  */
588  ai = adj_mcast_add_or_lock (fp,
589  fib_proto_to_link (fp),
590  a->mcast_sw_if_index);
591 
592  /*
593  * create a new end-point
594  */
595  mcast_shared_add (&t->dst, mfei, ai);
596  }
597 
598  dpo_id_t dpo = DPO_INVALID;
599  mcast_shared_t ep = mcast_shared_get (&t->dst);
600 
601  /* Stack shared mcast dst mac addr rewrite on encap */
603  fib_proto_to_dpo (fp), ep.mcast_adj_index);
604 
605  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
606  dpo_reset (&dpo);
607  flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
608  }
609 
610  vnet_get_sw_interface (vnet_get_main (), sw_if_index)->flood_class =
611  flood_class;
612  }
613  else
614  {
615  /* deleting a tunnel: tunnel must exist */
616  if (!p)
617  return VNET_API_ERROR_NO_SUCH_ENTRY;
618 
619  u32 instance = p[0];
620  t = pool_elt_at_index (vxm->tunnels, instance);
621 
622  sw_if_index = t->sw_if_index;
623  vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
624 
625  if (VXLAN_GBP_TUNNEL_MODE_L3 == t->mode)
626  {
629  }
630 
632 
633  if (!is_ip6)
634  clib_bihash_add_del_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, &key4,
635  0 /*del */ );
636  else
637  clib_bihash_add_del_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, &key6,
638  0 /*del */ );
639 
640  if (!ip46_address_is_multicast (&t->dst))
641  {
642  vtep_addr_unref (&t->src);
644  }
645  else if (vtep_addr_unref (&t->dst) == 0)
646  {
647  mcast_shared_remove (&t->dst);
648  }
649 
653 
654  fib_node_deinit (&t->node);
655  pool_put (vxm->tunnels, t);
656  }
657 
658  if (sw_if_indexp)
659  *sw_if_indexp = sw_if_index;
660 
661  return 0;
662 }
663 
664 int
666 {
668  vxlan_gbp_tunnel_t *t = 0;
669  u32 ti;
670 
671  if (sw_if_index >= vec_len (vxm->tunnel_index_by_sw_if_index))
672  return VNET_API_ERROR_NO_SUCH_ENTRY;
673 
675  if (~0 != ti)
676  {
677  t = pool_elt_at_index (vxm->tunnels, ti);
678 
680  .is_add = 0,
681  .is_ip6 = !ip46_address_is_ip4 (&t->src),
682  .vni = t->vni,
683  .src = t->src,
684  .dst = t->dst,
685  .instance = ~0,
686  };
687 
688  return (vnet_vxlan_gbp_tunnel_add_del (&args, NULL));
689  }
690 
691  return VNET_API_ERROR_NO_SUCH_ENTRY;
692 }
693 
694 static uword
695 get_decap_next_for_node (u32 node_index, u32 ipv4_set)
696 {
698  vlib_main_t *vm = vxm->vlib_main;
699  uword input_node = (ipv4_set) ? vxlan4_gbp_input_node.index :
700  vxlan6_gbp_input_node.index;
701 
702  return vlib_node_add_next (vm, input_node, node_index);
703 }
704 
705 static uword
706 unformat_decap_next (unformat_input_t * input, va_list * args)
707 {
708  u32 *result = va_arg (*args, u32 *);
709  u32 ipv4_set = va_arg (*args, int);
711  vlib_main_t *vm = vxm->vlib_main;
712  u32 node_index;
713  u32 tmp;
714 
715  if (unformat (input, "l2"))
716  *result = VXLAN_GBP_INPUT_NEXT_L2_INPUT;
717  else if (unformat (input, "node %U", unformat_vlib_node, vm, &node_index))
718  *result = get_decap_next_for_node (node_index, ipv4_set);
719  else if (unformat (input, "%d", &tmp))
720  *result = tmp;
721  else
722  return 0;
723  return 1;
724 }
725 
726 static clib_error_t *
728  unformat_input_t * input,
729  vlib_cli_command_t * cmd)
730 {
731  unformat_input_t _line_input, *line_input = &_line_input;
732  ip46_address_t src = ip46_address_initializer, dst =
735  u8 is_add = 1;
736  u8 src_set = 0;
737  u8 dst_set = 0;
738  u8 grp_set = 0;
739  u8 ipv4_set = 0;
740  u8 ipv6_set = 0;
741  u32 instance = ~0;
742  u32 encap_fib_index = 0;
743  u32 mcast_sw_if_index = ~0;
744  u32 decap_next_index = VXLAN_GBP_INPUT_NEXT_L2_INPUT;
745  u32 vni = 0;
746  u32 table_id;
747  clib_error_t *parse_error = NULL;
748 
749  /* Get a line of input. */
750  if (!unformat_user (input, unformat_line_input, line_input))
751  return 0;
752 
753  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
754  {
755  if (unformat (line_input, "del"))
756  {
757  is_add = 0;
758  }
759  else if (unformat (line_input, "instance %d", &instance))
760  ;
761  else if (unformat (line_input, "src %U",
763  {
764  src_set = 1;
765  ip46_address_is_ip4 (&src) ? (ipv4_set = 1) : (ipv6_set = 1);
766  }
767  else if (unformat (line_input, "dst %U",
769  {
770  dst_set = 1;
771  ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1);
772  }
773  else if (unformat (line_input, "group %U %U",
776  vnet_get_main (), &mcast_sw_if_index))
777  {
778  grp_set = dst_set = 1;
779  ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1);
780  }
781  else if (unformat (line_input, "encap-vrf-id %d", &table_id))
782  {
783  encap_fib_index =
784  fib_table_find (fib_ip_proto (ipv6_set), table_id);
785  }
786  else if (unformat (line_input, "decap-next %U", unformat_decap_next,
787  &decap_next_index, ipv4_set))
788  ;
789  else if (unformat (line_input, "vni %d", &vni))
790  ;
791  else
792  {
793  parse_error = clib_error_return (0, "parse error: '%U'",
794  format_unformat_error, line_input);
795  break;
796  }
797  }
798 
799  unformat_free (line_input);
800 
801  if (parse_error)
802  return parse_error;
803 
804  if (encap_fib_index == ~0)
805  return clib_error_return (0, "nonexistent encap-vrf-id %d", table_id);
806 
807  if (src_set == 0)
808  return clib_error_return (0, "tunnel src address not specified");
809 
810  if (dst_set == 0)
811  return clib_error_return (0, "tunnel dst address not specified");
812 
813  if (grp_set && !ip46_address_is_multicast (&dst))
814  return clib_error_return (0, "tunnel group address not multicast");
815 
816  if (grp_set == 0 && ip46_address_is_multicast (&dst))
817  return clib_error_return (0, "dst address must be unicast");
818 
819  if (grp_set && mcast_sw_if_index == ~0)
820  return clib_error_return (0, "tunnel nonexistent multicast device");
821 
822  if (ipv4_set && ipv6_set)
823  return clib_error_return (0, "both IPv4 and IPv6 addresses specified");
824 
825  if (ip46_address_cmp (&src, &dst) == 0)
826  return clib_error_return (0, "src and dst addresses are identical");
827 
828  if (decap_next_index == ~0)
829  return clib_error_return (0, "next node not found");
830 
831  if (vni == 0)
832  return clib_error_return (0, "vni not specified");
833 
834  if (vni >> 24)
835  return clib_error_return (0, "vni %d out of range", vni);
836 
838  .is_add = is_add,
839  .is_ip6 = ipv6_set,
840  .instance = instance,
841 #define _(x) .x = x,
843 #undef _
844  };
845 
846  u32 tunnel_sw_if_index;
847  int rv = vnet_vxlan_gbp_tunnel_add_del (&a, &tunnel_sw_if_index);
848 
849  switch (rv)
850  {
851  case 0:
852  if (is_add)
854  vnet_get_main (), tunnel_sw_if_index);
855  break;
856 
857  case VNET_API_ERROR_TUNNEL_EXIST:
858  return clib_error_return (0, "tunnel already exists...");
859 
860  case VNET_API_ERROR_NO_SUCH_ENTRY:
861  return clib_error_return (0, "tunnel does not exist...");
862 
863  case VNET_API_ERROR_INSTANCE_IN_USE:
864  return clib_error_return (0, "Instance is in use");
865 
866  default:
867  return clib_error_return
868  (0, "vnet_vxlan_gbp_tunnel_add_del returned %d", rv);
869  }
870 
871  return 0;
872 }
873 
874 /*?
875  * Add or delete a VXLAN Tunnel.
876  *
877  * VXLAN provides the features needed to allow L2 bridge domains (BDs)
878  * to span multiple servers. This is done by building an L2 overlay on
879  * top of an L3 network underlay using VXLAN tunnels.
880  *
881  * This makes it possible for servers to be co-located in the same data
882  * center or be separated geographically as long as they are reachable
883  * through the underlay L3 network.
884  *
885  * You can refer to this kind of L2 overlay bridge domain as a VXLAN
886  * (Virtual eXtensible VLAN) segment.
887  *
888  * @cliexpar
889  * Example of how to create a VXLAN Tunnel:
890  * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 encap-vrf-id 7}
891  * Example of how to create a VXLAN Tunnel with a known name, vxlan_gbp_tunnel42:
892  * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 dst 10.0.3.3 instance 42}
893  * Example of how to create a multicast VXLAN Tunnel with a known name, vxlan_gbp_tunnel23:
894  * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 group 239.1.1.1 GigabitEthernet0/8/0 instance 23}
895  * Example of how to delete a VXLAN Tunnel:
896  * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 del}
897  ?*/
898 /* *INDENT-OFF* */
899 VLIB_CLI_COMMAND (create_vxlan_gbp_tunnel_command, static) = {
900  .path = "create vxlan-gbp tunnel",
901  .short_help =
902  "create vxlan-gbp tunnel src <local-vtep-addr>"
903  " {dst <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>"
904  " [instance <id>]"
905  " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [del]",
907 };
908 /* *INDENT-ON* */
909 
910 static clib_error_t *
912  unformat_input_t * input,
913  vlib_cli_command_t * cmd)
914 {
917  int raw = 0;
918 
920  {
921  if (unformat (input, "raw"))
922  raw = 1;
923  else
924  return clib_error_return (0, "parse error: '%U'",
925  format_unformat_error, input);
926  }
927 
928  if (pool_elts (vxm->tunnels) == 0)
929  vlib_cli_output (vm, "No vxlan-gbp tunnels configured...");
930 
931 /* *INDENT-OFF* */
932  pool_foreach (t, vxm->tunnels,
933  ({
934  vlib_cli_output (vm, "%U", format_vxlan_gbp_tunnel, t);
935  }));
936 /* *INDENT-ON* */
937 
938  if (raw)
939  {
940  vlib_cli_output (vm, "Raw IPv4 Hash Table:\n%U\n",
941  format_bihash_16_8, &vxm->vxlan4_gbp_tunnel_by_key,
942  1 /* verbose */ );
943  vlib_cli_output (vm, "Raw IPv6 Hash Table:\n%U\n",
944  format_bihash_24_8, &vxm->vxlan6_gbp_tunnel_by_key,
945  1 /* verbose */ );
946  }
947 
948  return 0;
949 }
950 
951 /*?
952  * Display all the VXLAN Tunnel entries.
953  *
954  * @cliexpar
955  * Example of how to display the VXLAN Tunnel entries:
956  * @cliexstart{show vxlan_gbp tunnel}
957  * [0] src 10.0.3.1 dst 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2
958  * @cliexend
959  ?*/
960 /* *INDENT-OFF* */
961 VLIB_CLI_COMMAND (show_vxlan_gbp_tunnel_command, static) = {
962  .path = "show vxlan-gbp tunnel",
963  .short_help = "show vxlan-gbp tunnel [raw]",
965 };
966 /* *INDENT-ON* */
967 
968 
969 void
971 {
972  if (is_ip6)
973  vnet_feature_enable_disable ("ip6-unicast", "ip6-vxlan-gbp-bypass",
974  sw_if_index, is_enable, 0, 0);
975  else
976  vnet_feature_enable_disable ("ip4-unicast", "ip4-vxlan-gbp-bypass",
977  sw_if_index, is_enable, 0, 0);
978 }
979 
980 
981 static clib_error_t *
983  unformat_input_t * input, vlib_cli_command_t * cmd)
984 {
985  unformat_input_t _line_input, *line_input = &_line_input;
986  vnet_main_t *vnm = vnet_get_main ();
987  clib_error_t *error = 0;
988  u32 sw_if_index, is_enable;
989 
990  sw_if_index = ~0;
991  is_enable = 1;
992 
993  if (!unformat_user (input, unformat_line_input, line_input))
994  return 0;
995 
996  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
997  {
998  if (unformat_user
999  (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
1000  ;
1001  else if (unformat (line_input, "del"))
1002  is_enable = 0;
1003  else
1004  {
1005  error = unformat_parse_error (line_input);
1006  goto done;
1007  }
1008  }
1009 
1010  if (~0 == sw_if_index)
1011  {
1012  error = clib_error_return (0, "unknown interface `%U'",
1013  format_unformat_error, line_input);
1014  goto done;
1015  }
1016 
1017  vnet_int_vxlan_gbp_bypass_mode (sw_if_index, is_ip6, is_enable);
1018 
1019 done:
1020  unformat_free (line_input);
1021 
1022  return error;
1023 }
1024 
1025 static clib_error_t *
1027  unformat_input_t * input, vlib_cli_command_t * cmd)
1028 {
1029  return set_ip_vxlan_gbp_bypass (0, input, cmd);
1030 }
1031 
1032 /*?
1033  * This command adds the 'ip4-vxlan-gbp-bypass' graph node for a given interface.
1034  * By adding the IPv4 vxlan_gbp-bypass graph node to an interface, the node checks
1035  * for and validate input vxlan_gbp packet and bypass ip4-lookup, ip4-local,
1036  * ip4-udp-lookup nodes to speedup vxlan_gbp packet forwarding. This node will
1037  * cause extra overhead to for non-vxlan_gbp packets which is kept at a minimum.
1038  *
1039  * @cliexpar
1040  * @parblock
1041  * Example of graph node before ip4-vxlan_gbp-bypass is enabled:
1042  * @cliexstart{show vlib graph ip4-vxlan_gbp-bypass}
1043  * Name Next Previous
1044  * ip4-vxlan-gbp-bypass error-drop [0]
1045  * vxlan4-gbp-input [1]
1046  * ip4-lookup [2]
1047  * @cliexend
1048  *
1049  * Example of how to enable ip4-vxlan-gbp-bypass on an interface:
1050  * @cliexcmd{set interface ip vxlan-gbp-bypass GigabitEthernet2/0/0}
1051  *
1052  * Example of graph node after ip4-vxlan-gbp-bypass is enabled:
1053  * @cliexstart{show vlib graph ip4-vxlan-gbp-bypass}
1054  * Name Next Previous
1055  * ip4-vxlan-gbp-bypass error-drop [0] ip4-input
1056  * vxlan4-gbp-input [1] ip4-input-no-checksum
1057  * ip4-lookup [2]
1058  * @cliexend
1059  *
1060  * Example of how to display the feature enabled on an interface:
1061  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1062  * IP feature paths configured on GigabitEthernet2/0/0...
1063  * ...
1064  * ipv4 unicast:
1065  * ip4-vxlan-gbp-bypass
1066  * ip4-lookup
1067  * ...
1068  * @cliexend
1069  *
1070  * Example of how to disable ip4-vxlan-gbp-bypass on an interface:
1071  * @cliexcmd{set interface ip vxlan-gbp-bypass GigabitEthernet2/0/0 del}
1072  * @endparblock
1073 ?*/
1074 /* *INDENT-OFF* */
1075 VLIB_CLI_COMMAND (set_interface_ip_vxlan_gbp_bypass_command, static) = {
1076  .path = "set interface ip vxlan-gbp-bypass",
1077  .function = set_ip4_vxlan_gbp_bypass,
1078  .short_help = "set interface ip vxlan-gbp-bypass <interface> [del]",
1079 };
1080 /* *INDENT-ON* */
1081 
1082 static clib_error_t *
1084  unformat_input_t * input, vlib_cli_command_t * cmd)
1085 {
1086  return set_ip_vxlan_gbp_bypass (1, input, cmd);
1087 }
1088 
1089 /*?
1090  * This command adds the 'ip6-vxlan-gbp-bypass' graph node for a given interface.
1091  * By adding the IPv6 vxlan-gbp-bypass graph node to an interface, the node checks
1092  * for and validate input vxlan_gbp packet and bypass ip6-lookup, ip6-local,
1093  * ip6-udp-lookup nodes to speedup vxlan_gbp packet forwarding. This node will
1094  * cause extra overhead to for non-vxlan packets which is kept at a minimum.
1095  *
1096  * @cliexpar
1097  * @parblock
1098  * Example of graph node before ip6-vxlan-gbp-bypass is enabled:
1099  * @cliexstart{show vlib graph ip6-vxlan-gbp-bypass}
1100  * Name Next Previous
1101  * ip6-vxlan-gbp-bypass error-drop [0]
1102  * vxlan6-gbp-input [1]
1103  * ip6-lookup [2]
1104  * @cliexend
1105  *
1106  * Example of how to enable ip6-vxlan-gbp-bypass on an interface:
1107  * @cliexcmd{set interface ip6 vxlan-gbp-bypass GigabitEthernet2/0/0}
1108  *
1109  * Example of graph node after ip6-vxlan-gbp-bypass is enabled:
1110  * @cliexstart{show vlib graph ip6-vxlan-gbp-bypass}
1111  * Name Next Previous
1112  * ip6-vxlan-gbp-bypass error-drop [0] ip6-input
1113  * vxlan6-gbp-input [1] ip4-input-no-checksum
1114  * ip6-lookup [2]
1115  * @cliexend
1116  *
1117  * Example of how to display the feature enabled on an interface:
1118  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1119  * IP feature paths configured on GigabitEthernet2/0/0...
1120  * ...
1121  * ipv6 unicast:
1122  * ip6-vxlan-gbp-bypass
1123  * ip6-lookup
1124  * ...
1125  * @cliexend
1126  *
1127  * Example of how to disable ip6-vxlan-gbp-bypass on an interface:
1128  * @cliexcmd{set interface ip6 vxlan-gbp-bypass GigabitEthernet2/0/0 del}
1129  * @endparblock
1130 ?*/
1131 /* *INDENT-OFF* */
1132 VLIB_CLI_COMMAND (set_interface_ip6_vxlan_gbp_bypass_command, static) = {
1133  .path = "set interface ip6 vxlan-gbp-bypass",
1134  .function = set_ip6_vxlan_gbp_bypass,
1135  .short_help = "set interface ip6 vxlan-gbp-bypass <interface> [del]",
1136 };
1137 /* *INDENT-ON* */
1138 
1139 #define VXLAN_GBP_HASH_NUM_BUCKETS (2 * 1024)
1140 #define VXLAN_GBP_HASH_MEMORY_SIZE (1 << 20)
1141 
1142 clib_error_t *
1144 {
1146 
1147  vxm->vnet_main = vnet_get_main ();
1148  vxm->vlib_main = vm;
1149 
1150  /* initialize the ip6 hash */
1151  clib_bihash_init_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, "vxlan4-gbp",
1154  clib_bihash_init_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, "vxlan6-gbp",
1157  vxm->vtep6 = hash_create_mem (0, sizeof (ip6_address_t), sizeof (uword));
1158  vxm->mcast_shared = hash_create_mem (0,
1159  sizeof (ip46_address_t),
1160  sizeof (mcast_shared_t));
1161 
1163 
1164  punt_hdl = vlib_punt_client_register ("vxlan-gbp");
1165 
1166  vlib_punt_reason_alloc (punt_hdl,
1167  "VXLAN-GBP-no-such-v4-tunnel",
1169  vlib_punt_reason_alloc (punt_hdl,
1170  "VXLAN-GBP-no-such-v6-tunnel",
1172 
1173  return (0);
1174 }
1175 
1176 /* *INDENT-OFF* */
1178 {
1179  .runs_after = VLIB_INITS("punt_init"),
1180 };
1181 /* *INDENT-ON* */
1182 
1183 /*
1184  * fd.io coding-style-patch-verification: ON
1185  *
1186  * Local Variables:
1187  * eval: (c-set-style "gnu")
1188  * End:
1189  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:439
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 ...
u16 lb_n_buckets
number of buckets in the load-balance.
Definition: load_balance.h:116
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:531
vmrglw vmrglh hi
static void mcast_shared_add(ip46_address_t *dst, fib_node_index_t mfei, adj_index_t ai)
Definition: vxlan_gbp.c:326
fib_node_index_t fib_entry_track(u32 fib_index, const fib_prefix_t *prefix, fib_node_type_t child_type, index_t child_index, u32 *sibling)
Trackers are used on FIB entries by objects that which to track the changing state of the entry...
#define VXLAN_GBP_HASH_MEMORY_SIZE
Definition: vxlan_gbp.c:1140
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:62
u32 flags
Definition: vhost_user.h:141
static clib_error_t * show_vxlan_gbp_tunnel_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan_gbp.c:911
static void vxlan_gbp_set_header(vxlan_gbp_header_t *h, u32 vni)
clib_bihash_24_8_t vxlan6_gbp_tunnel_by_key
Definition: vxlan_gbp.h:170
#define hash_unset(h, key)
Definition: hash.h:261
VNET_HW_INTERFACE_CLASS(vxlan_gbp_hw_class)
VNET_DEVICE_CLASS(vxlan_gbp_device_class, static)
A representation of a path as described by a route producer.
Definition: fib_types.h:485
ip4_address_t src_address
Definition: ip4_packet.h:170
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
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
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)
Add n paths to an entry (aka route) in the FIB.
Definition: mfib_table.c:323
u32 frp_mitf_flags
MFIB interface flags.
Definition: fib_types.h:554
clib_error_t * vxlan_gbp_init(vlib_main_t *vm)
Definition: vxlan_gbp.c:1143
unsigned long u64
Definition: types.h:89
static vlib_punt_hdl_t punt_hdl
Definition: vxlan_gbp.c:32
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
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:448
int vnet_vxlan_gbp_tunnel_add_del(vnet_vxlan_gbp_tunnel_add_del_args_t *a, u32 *sw_if_indexp)
Definition: vxlan_gbp.c:384
static void mcast_shared_remove(ip46_address_t *dst)
Definition: vxlan_gbp.c:337
#define vnet_rewrite_set_data(rw, data, data_bytes)
Definition: rewrite.h:138
u32 mcast_sw_if_index
Definition: vxlan_gbp.api:40
vlib_node_registration_t vxlan4_gbp_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan4_gbp_encap_node)
Definition: encap.c:512
void vxlan_gbp_unregister_udp_ports(void)
Definition: vxlan_gbp.c:366
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
static uword unformat_decap_next(unformat_input_t *input, va_list *args)
Definition: vxlan_gbp.c:706
void dpo_copy(dpo_id_t *dst, const dpo_id_t *src)
atomic copy a data-plane object.
Definition: dpo.c:262
enum vxlan_gbp_tunnel_mode_t_ vxlan_gbp_tunnel_mode_t
vl_api_address_t src
Definition: gre.api:51
int vlib_punt_hdl_t
Typedef for a client handle.
Definition: punt.h:47
static void vxlan_gbp_tunnel_last_lock_gone(fib_node_t *node)
Function definition to inform the FIB node that its last lock has gone.
Definition: vxlan_gbp.c:195
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:989
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
vxlan_gbp_main_t vxlan_gbp_main
Definition: vxlan_gbp.c:34
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:66
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:490
unformat_function_t unformat_vnet_sw_interface
static u8 * format_vxlan_gbp_name(u8 *s, va_list *args)
Definition: vxlan_gbp.c:76
int vlib_punt_reason_alloc(vlib_punt_hdl_t client, const char *reason_name, vlib_punt_reason_t *reason)
Allocate a new punt reason.
Definition: punt.c:379
vlib_node_registration_t vxlan6_gbp_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan6_gbp_encap_node)
Definition: encap.c:526
ip6_address_t src_address
Definition: ip6_packet.h:383
#define ip46_address_cmp(ip46_1, ip46_2)
Definition: ip6_packet.h:92
format_function_t format_vnet_sw_if_index_name
static uword vlib_node_add_next(vlib_main_t *vm, uword node, uword next_node)
Definition: node_funcs.h:1092
unsigned char u8
Definition: types.h:56
enum fib_protocol_t_ fib_protocol_t
Protocol Type.
static uword ip46_address_is_multicast(const ip46_address_t *a)
Definition: ip6_packet.h:193
static uword vtep_addr_ref(ip46_address_t *ip)
Definition: vxlan_gbp.c:275
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
static u8 * format_vxlan_gbp_header_with_length(u8 *s, va_list *args)
Definition: vxlan_gbp.c:114
vnet_flood_class_t flood_class
Definition: interface.h:728
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:493
u32 frp_sw_if_index
The interface.
Definition: fib_types.h:525
vl_api_interface_index_t sw_if_index
Definition: gre.api:50
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:173
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:515
static void vxlan_gbp_tunnel_restack_dpo(vxlan_gbp_tunnel_t *t)
Definition: vxlan_gbp.c:130
ip4_address_t dst_address
Definition: ip4_packet.h:170
Aggregate type for a prefix.
Definition: fib_types.h:203
#define clib_error_return(e, args...)
Definition: error.h:99
void adj_unlock(adj_index_t adj_index)
Release a reference counting lock on the adjacency.
Definition: adj.c:347
#define ALWAYS_ASSERT(truth)
vlib_main_t * vlib_main
Definition: vxlan_gbp.h:187
unsigned int u32
Definition: types.h:88
static void vxlan_gbp_rewrite(vxlan_gbp_tunnel_t *t, bool is_ip6)
Definition: vxlan_gbp.c:224
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:1080
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:762
vlib_punt_hdl_t vlib_punt_client_register(const char *who)
Register a new clinet.
Definition: punt.c:140
uword * mcast_shared
Definition: vxlan_gbp.h:178
unformat_function_t unformat_line_input
Definition: format.h:283
The identity of a DPO is a combination of its type and its instance number/index of objects of that t...
Definition: dpo.h:170
#define hash_create_mem(elts, key_bytes, value_bytes)
Definition: hash.h:661
#define hash_get(h, key)
Definition: hash.h:249
static vxlan_gbp_tunnel_t * vxlan_gbp_tunnel_from_fib_node(fib_node_t *node)
Definition: vxlan_gbp.c:158
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:514
vlib_punt_reason_t punt_no_such_tunnel[FIB_PROTOCOL_IP_MAX]
Punt reasons for no such tunnel.
Definition: vxlan_gbp.h:196
void ip4_sw_interface_enable_disable(u32 sw_if_index, u32 is_enable)
Definition: ip4_forward.c:637
ip46_address_t fp_addr
The address type is not deriveable from the fp_addr member.
Definition: fib_types.h:226
dpo_type_t dpoi_type
the type
Definition: dpo.h:174
static const dpo_id_t * load_balance_get_bucket_i(const load_balance_t *lb, u32 bucket)
Definition: load_balance.h:229
clib_bihash_16_8_t vxlan4_gbp_tunnel_by_key
Definition: vxlan_gbp.h:169
long ctx[MAX_CONNS]
Definition: main.c:144
dpo_id_t next_dpo
Definition: vxlan_gbp.h:76
struct _unformat_input_t unformat_input_t
static clib_error_t * set_ip6_vxlan_gbp_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan_gbp.c:1083
load-balancing over a choice of [un]equal cost paths
Definition: dpo.h:102
static uword get_decap_next_for_node(u32 node_index, u32 ipv4_set)
Definition: vxlan_gbp.c:695
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:286
u32 sibling_index
The tunnel is a child of the FIB entry for its destination.
Definition: vxlan_gbp.h:125
The FIB DPO provieds;.
Definition: load_balance.h:106
#define PREDICT_FALSE(x)
Definition: clib.h:112
vnet_sw_interface_flags_t flags
Definition: interface.h:703
fib_node_type_t fn_type
The node&#39;s type.
Definition: fib_node.h:299
An node in the FIB graph.
Definition: fib_node.h:295
vl_api_address_t dst
Definition: gre.api:52
fib_node_index_t fib_entry_index
Definition: vxlan_gbp.h:116
u8 * format_vxlan_gbp_tunnel(u8 *s, va_list *args)
Definition: vxlan_gbp.c:54
#define ip46_address_initializer
Definition: ip6_packet.h:96
u8 len
Definition: ip_types.api:90
#define ip46_address_is_ip4(ip46)
Definition: ip6_packet.h:88
#define pool_get_aligned(P, E, A)
Allocate an object E from a pool P with alignment A.
Definition: pool.h:230
vlib_node_registration_t vxlan4_gbp_input_node
(constructor) VLIB_REGISTER_NODE (vxlan4_gbp_input_node)
Definition: decap.c:541
#define UNFORMAT_END_OF_INPUT
Definition: format.h:145
uword * instance_used
Definition: vxlan_gbp.h:191
vlib_main_t * vm
Definition: buffer.c:323
u32 udp_ports_registered
Definition: vxlan_gbp.h:184
void udp_unregister_dst_port(vlib_main_t *vm, udp_dst_port_t dst_port, u8 is_ip4)
Definition: udp_local.c:506
vnet_flood_class_t
Definition: interface.h:644
fib_node_get_t fnv_get
Definition: fib_node.h:283
vlib_node_registration_t vxlan6_gbp_input_node
(constructor) VLIB_REGISTER_NODE (vxlan6_gbp_input_node)
Definition: decap.c:556
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:30
static fib_node_back_walk_rc_t vxlan_gbp_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 DIP to encap n...
Definition: vxlan_gbp.c:171
u32 adj_index_t
An index for adjacencies.
Definition: adj_types.h:30
static fib_node_t * vxlan_gbp_tunnel_fib_node_get(fib_node_index_t index)
Function definition to get a FIB node from its index.
Definition: vxlan_gbp.c:181
void fib_prefix_from_ip46_addr(const ip46_address_t *addr, fib_prefix_t *pfx)
Host prefix from ip.
Definition: fib_types.c:81
static uword vtep_addr_unref(ip46_address_t *ip)
Definition: vxlan_gbp.c:289
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:186
vl_api_vxlan_gbp_api_tunnel_mode_t mode
Definition: vxlan_gbp.api:44
Aggregate 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:1578
void vxlan_gbp_register_udp_ports(void)
Definition: vxlan_gbp.c:348
Context passed between object during a back walk.
Definition: fib_node.h:208
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:161
ip46_address_t dst
Definition: vxlan_gbp.h:86
#define ASSERT(truth)
void fib_entry_untrack(fib_node_index_t fei, u32 sibling)
Stop tracking a FIB entry.
static load_balance_t * load_balance_get(index_t lbi)
Definition: load_balance.h:220
static clib_error_t * set_ip_vxlan_gbp_bypass(u32 is_ip6, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan_gbp.c:982
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:595
int vnet_vxlan_gbp_tunnel_del(u32 sw_if_index)
Definition: vxlan_gbp.c:665
dpo_proto_t fib_proto_to_dpo(fib_protocol_t fib_proto)
Definition: fib_types.c:247
#define foreach_copy_field
Definition: vxlan_gbp.c:215
fib_node_t node
Linkage into the FIB object graph.
Definition: vxlan_gbp.h:110
unformat_function_t unformat_ip46_address
Definition: format.h:65
ip46_address_t src
Definition: vxlan_gbp.h:85
static clib_error_t * vxlan_gbp_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: vxlan_gbp.c:94
void vnet_delete_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
Definition: interface.c:974
#define unformat_parse_error(input)
Definition: format.h:269
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:370
fib_protocol_t fp_proto
protocol type
Definition: mfib_types.h:33
u8 * format_vxlan_gbp_tunnel_mode(u8 *s, va_list *args)
Definition: vxlan_gbp.c:37
l2input_main_t l2input_main
Definition: l2_input.c:128
index_t dpoi_index
the index of objects of that type
Definition: dpo.h:186
static clib_error_t * vxlan_gbp_tunnel_add_del_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan_gbp.c:727
A for-us/local path.
Definition: fib_types.h:338
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
static clib_error_t * set_ip4_vxlan_gbp_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan_gbp.c:1026
u32 instance
Definition: gre.api:48
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:492
u64 uword
Definition: types.h:112
static void unformat_free(unformat_input_t *i)
Definition: format.h:163
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:197
vxlan_gbp_tunnel_t * tunnels
Definition: vxlan_gbp.h:166
unformat_function_t unformat_vlib_node
Definition: node_funcs.h:1147
#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:282
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
typedef CLIB_PACKED(union { struct { fib_node_index_t mfib_entry_index;adj_index_t mcast_adj_index;};u64 as_u64;})
Definition: vxlan_gbp.c:304
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:501
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:232
vnet_link_t fib_proto_to_link(fib_protocol_t proto)
Convert from a protocol to a link type.
Definition: fib_types.c:281
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:468
u8 ip_version_and_header_length
Definition: ip4_packet.h:138
vxlan_gbp_tunnel_mode_t mode
Tunnel mode.
Definition: vxlan_gbp.h:105
u32 table_id
Definition: fib_types.api:118
#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
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:772
#define VLIB_INITS(...)
Definition: init.h:344
static u16 ip4_header_checksum(ip4_header_t *i)
Definition: ip4_packet.h:247
void ip6_sw_interface_enable_disable(u32 sw_if_index, u32 is_enable)
Definition: ip6_forward.c:238
void vnet_int_vxlan_gbp_bypass_mode(u32 sw_if_index, u8 is_ip6, u8 is_enable)
Definition: vxlan_gbp.c:970
const ip46_address_t zero_addr
Definition: lookup.c:326
#define VXLAN_GBP_HASH_NUM_BUCKETS
Definition: vxlan_gbp.c:1139
u32 * tunnel_index_by_sw_if_index
Definition: vxlan_gbp.h:181
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
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:275
ip6_address_t dst_address
Definition: ip6_packet.h:383
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:171
vnet_main_t * vnet_main
Definition: vxlan_gbp.h:188
u8 * format_vxlan_gbp_encap_trace(u8 *s, va_list *args)
Definition: encap.c:58
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128