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Vector Packet Processing
vxlan.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 #include <vnet/vxlan/vxlan.h>
16 #include <vnet/ip/format.h>
17 #include <vnet/fib/fib_entry.h>
18 #include <vnet/fib/fib_table.h>
19 #include <vnet/mfib/mfib_table.h>
20 #include <vnet/adj/adj_mcast.h>
21 #include <vnet/adj/rewrite.h>
22 #include <vnet/interface.h>
23 #include <vnet/flow/flow.h>
24 #include <vlib/vlib.h>
25 
26 /**
27  * @file
28  * @brief VXLAN.
29  *
30  * VXLAN provides the features needed to allow L2 bridge domains (BDs)
31  * to span multiple servers. This is done by building an L2 overlay on
32  * top of an L3 network underlay using VXLAN tunnels.
33  *
34  * This makes it possible for servers to be co-located in the same data
35  * center or be separated geographically as long as they are reachable
36  * through the underlay L3 network.
37  *
38  * You can refer to this kind of L2 overlay bridge domain as a VXLAN
39  * (Virtual eXtensible VLAN) segment.
40  */
41 
42 
44 
45 static u8 *
46 format_decap_next (u8 * s, va_list * args)
47 {
48  u32 next_index = va_arg (*args, u32);
49 
50  if (next_index == VXLAN_INPUT_NEXT_DROP)
51  return format (s, "drop");
52  else
53  return format (s, "index %d", next_index);
54  return s;
55 }
56 
57 u8 *
58 format_vxlan_tunnel (u8 * s, va_list * args)
59 {
60  vxlan_tunnel_t *t = va_arg (*args, vxlan_tunnel_t *);
61 
62  s = format (s,
63  "[%d] instance %d src %U dst %U vni %d fib-idx %d sw-if-idx %d ",
67  t->vni, t->encap_fib_index, t->sw_if_index);
68 
69  s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index);
70 
71  if (PREDICT_FALSE (t->decap_next_index != VXLAN_INPUT_NEXT_L2_INPUT))
72  s = format (s, "decap-next-%U ", format_decap_next, t->decap_next_index);
73 
75  s = format (s, "mcast-sw-if-idx %d ", t->mcast_sw_if_index);
76 
77  if (t->flow_index != ~0)
78  s = format (s, "flow-index %d [%U]", t->flow_index,
80 
81  return s;
82 }
83 
84 static u8 *
85 format_vxlan_name (u8 * s, va_list * args)
86 {
87  u32 dev_instance = va_arg (*args, u32);
88  vxlan_main_t *vxm = &vxlan_main;
89  vxlan_tunnel_t *t;
90 
91  if (dev_instance == ~0)
92  return format (s, "<cached-unused>");
93 
94  if (dev_instance >= vec_len (vxm->tunnels))
95  return format (s, "<improperly-referenced>");
96 
97  t = pool_elt_at_index (vxm->tunnels, dev_instance);
98 
99  return format (s, "vxlan_tunnel%d", t->user_instance);
100 }
101 
102 static clib_error_t *
104 {
105  u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
107  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
108 
109  return /* no error */ 0;
110 }
111 
112 /* *INDENT-OFF* */
113 VNET_DEVICE_CLASS (vxlan_device_class, static) = {
114  .name = "VXLAN",
115  .format_device_name = format_vxlan_name,
116  .format_tx_trace = format_vxlan_encap_trace,
117  .admin_up_down_function = vxlan_interface_admin_up_down,
118 };
119 /* *INDENT-ON* */
120 
121 static u8 *
122 format_vxlan_header_with_length (u8 * s, va_list * args)
123 {
124  u32 dev_instance = va_arg (*args, u32);
125  s = format (s, "unimplemented dev %u", dev_instance);
126  return s;
127 }
128 
129 /* *INDENT-OFF* */
130 VNET_HW_INTERFACE_CLASS (vxlan_hw_class) = {
131  .name = "VXLAN",
132  .format_header = format_vxlan_header_with_length,
133  .build_rewrite = default_build_rewrite,
134 };
135 /* *INDENT-ON* */
136 
137 static void
139 {
140  u8 is_ip4 = ip46_address_is_ip4 (&t->dst);
141  dpo_id_t dpo = DPO_INVALID;
142  fib_forward_chain_type_t forw_type = is_ip4 ?
144 
145  fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
146 
147  /* vxlan uses the payload hash as the udp source port
148  * hence the packet's hash is unknown
149  * skip single bucket load balance dpo's */
150  while (DPO_LOAD_BALANCE == dpo.dpoi_type)
151  {
153  if (lb->lb_n_buckets > 1)
154  break;
155 
156  dpo_copy (&dpo, load_balance_get_bucket_i (lb, 0));
157  }
158 
159  u32 encap_index = is_ip4 ?
160  vxlan4_encap_node.index : vxlan6_encap_node.index;
161  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
162  dpo_reset (&dpo);
163 }
164 
165 static vxlan_tunnel_t *
167 {
169  return ((vxlan_tunnel_t *) (((char *) node) -
171 }
172 
173 /**
174  * Function definition to backwalk a FIB node -
175  * Here we will restack the new dpo of VXLAN DIP to encap node.
176  */
179 {
182 }
183 
184 /**
185  * Function definition to get a FIB node from its index
186  */
187 static fib_node_t *
189 {
190  vxlan_tunnel_t *t;
191  vxlan_main_t *vxm = &vxlan_main;
192 
193  t = pool_elt_at_index (vxm->tunnels, index);
194 
195  return (&t->node);
196 }
197 
198 /**
199  * Function definition to inform the FIB node that its last lock has gone.
200  */
201 static void
203 {
204  /*
205  * The VXLAN tunnel is a root of the graph. As such
206  * it never has children and thus is never locked.
207  */
208  ASSERT (0);
209 }
210 
211 /*
212  * Virtual function table registered by VXLAN tunnels
213  * for participation in the FIB object graph.
214  */
215 const static fib_node_vft_t vxlan_vft = {
217  .fnv_last_lock = vxlan_tunnel_last_lock_gone,
218  .fnv_back_walk = vxlan_tunnel_back_walk,
219 };
220 
221 
222 #define foreach_copy_field \
223 _(vni) \
224 _(mcast_sw_if_index) \
225 _(encap_fib_index) \
226 _(decap_next_index) \
227 _(src) \
228 _(dst)
229 
230 static void
231 vxlan_rewrite (vxlan_tunnel_t * t, bool is_ip6)
232 {
233  union
234  {
235  ip4_vxlan_header_t h4;
236  ip6_vxlan_header_t h6;
237  } h;
238  int len = is_ip6 ? sizeof h.h6 : sizeof h.h4;
239 
240  udp_header_t *udp;
241  vxlan_header_t *vxlan;
242  /* Fixed portion of the (outer) ip header */
243 
244  memset (&h, 0, sizeof (h));
245  if (!is_ip6)
246  {
247  ip4_header_t *ip = &h.h4.ip4;
248  udp = &h.h4.udp, vxlan = &h.h4.vxlan;
249  ip->ip_version_and_header_length = 0x45;
250  ip->ttl = 254;
251  ip->protocol = IP_PROTOCOL_UDP;
252 
253  ip->src_address = t->src.ip4;
254  ip->dst_address = t->dst.ip4;
255 
256  /* we fix up the ip4 header length and checksum after-the-fact */
257  ip->checksum = ip4_header_checksum (ip);
258  }
259  else
260  {
261  ip6_header_t *ip = &h.h6.ip6;
262  udp = &h.h6.udp, vxlan = &h.h6.vxlan;
264  clib_host_to_net_u32 (6 << 28);
265  ip->hop_limit = 255;
266  ip->protocol = IP_PROTOCOL_UDP;
267 
268  ip->src_address = t->src.ip6;
269  ip->dst_address = t->dst.ip6;
270  }
271 
272  /* UDP header, randomize src port on something, maybe? */
273  udp->src_port = clib_host_to_net_u16 (4789);
274  udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_vxlan);
275 
276  /* VXLAN header */
277  vnet_set_vni_and_flags (vxlan, t->vni);
278  vnet_rewrite_set_data (*t, &h, len);
279 }
280 
281 static bool
283  u32 decap_next_index)
284 {
285  vlib_main_t *vm = vxm->vlib_main;
286  u32 input_idx = (!is_ip6) ?
287  vxlan4_input_node.index : vxlan6_input_node.index;
288  vlib_node_runtime_t *r = vlib_node_get_runtime (vm, input_idx);
289 
290  return decap_next_index < r->n_next_nodes;
291 }
292 
293 static uword
294 vtep_addr_ref (ip46_address_t * ip)
295 {
296  uword *vtep = ip46_address_is_ip4 (ip) ?
297  hash_get (vxlan_main.vtep4, ip->ip4.as_u32) :
298  hash_get_mem (vxlan_main.vtep6, &ip->ip6);
299  if (vtep)
300  return ++(*vtep);
301  ip46_address_is_ip4 (ip) ?
302  hash_set (vxlan_main.vtep4, ip->ip4.as_u32, 1) :
303  hash_set_mem_alloc (&vxlan_main.vtep6, &ip->ip6, 1);
304  return 1;
305 }
306 
307 static uword
308 vtep_addr_unref (ip46_address_t * ip)
309 {
310  uword *vtep = ip46_address_is_ip4 (ip) ?
311  hash_get (vxlan_main.vtep4, ip->ip4.as_u32) :
312  hash_get_mem (vxlan_main.vtep6, &ip->ip6);
313  ASSERT (vtep);
314  if (--(*vtep) != 0)
315  return *vtep;
316  ip46_address_is_ip4 (ip) ?
317  hash_unset (vxlan_main.vtep4, ip->ip4.as_u32) :
318  hash_unset_mem_free (&vxlan_main.vtep6, &ip->ip6);
319  return 0;
320 }
321 
322 /* *INDENT-OFF* */
323 typedef CLIB_PACKED(union
324 {
325  struct
326  {
327  fib_node_index_t mfib_entry_index;
328  adj_index_t mcast_adj_index;
329  };
330  u64 as_u64;
331 }) mcast_shared_t;
332 /* *INDENT-ON* */
333 
334 static inline mcast_shared_t
335 mcast_shared_get (ip46_address_t * ip)
336 {
338  uword *p = hash_get_mem (vxlan_main.mcast_shared, ip);
339  ASSERT (p);
340  mcast_shared_t ret = {.as_u64 = *p };
341  return ret;
342 }
343 
344 static inline void
345 mcast_shared_add (ip46_address_t * dst, fib_node_index_t mfei, adj_index_t ai)
346 {
347  mcast_shared_t new_ep = {
348  .mcast_adj_index = ai,
349  .mfib_entry_index = mfei,
350  };
351 
352  hash_set_mem_alloc (&vxlan_main.mcast_shared, dst, new_ep.as_u64);
353 }
354 
355 static inline void
356 mcast_shared_remove (ip46_address_t * dst)
357 {
358  mcast_shared_t ep = mcast_shared_get (dst);
359 
360  adj_unlock (ep.mcast_adj_index);
361  mfib_table_entry_delete_index (ep.mfib_entry_index, MFIB_SOURCE_VXLAN);
362 
363  hash_unset_mem_free (&vxlan_main.mcast_shared, dst);
364 }
365 
367  (vnet_vxlan_add_del_tunnel_args_t * a, u32 * sw_if_indexp)
368 {
369  vxlan_main_t *vxm = &vxlan_main;
370  vxlan_tunnel_t *t = 0;
371  vnet_main_t *vnm = vxm->vnet_main;
372  u64 *p;
373  u32 sw_if_index = ~0;
374  vxlan4_tunnel_key_t key4;
375  vxlan6_tunnel_key_t key6;
376  u32 is_ip6 = a->is_ip6;
377 
378  int not_found;
379  if (!is_ip6)
380  {
381  key4.key[0] = a->dst.ip4.as_u32;
382  key4.key[1] = (((u64) a->encap_fib_index) << 32)
383  | clib_host_to_net_u32 (a->vni << 8);
384  not_found =
385  clib_bihash_search_inline_16_8 (&vxm->vxlan4_tunnel_by_key, &key4);
386  p = &key4.value;
387  }
388  else
389  {
390  key6.key[0] = a->dst.ip6.as_u64[0];
391  key6.key[1] = a->dst.ip6.as_u64[1];
392  key6.key[2] = (((u64) a->encap_fib_index) << 32)
393  | clib_host_to_net_u32 (a->vni << 8);
394  not_found =
395  clib_bihash_search_inline_24_8 (&vxm->vxlan6_tunnel_by_key, &key6);
396  p = &key6.value;
397  }
398 
399  if (not_found)
400  p = 0;
401 
402  if (a->is_add)
403  {
404  l2input_main_t *l2im = &l2input_main;
405  u32 dev_instance; /* real dev instance tunnel index */
406  u32 user_instance; /* request and actual instance number */
407 
408  /* adding a tunnel: tunnel must not already exist */
409  if (p)
410  return VNET_API_ERROR_TUNNEL_EXIST;
411 
412  /*if not set explicitly, default to l2 */
413  if (a->decap_next_index == ~0)
414  a->decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT;
415  if (!vxlan_decap_next_is_valid (vxm, is_ip6, a->decap_next_index))
416  return VNET_API_ERROR_INVALID_DECAP_NEXT;
417 
419  memset (t, 0, sizeof (*t));
420  dev_instance = t - vxm->tunnels;
421 
422  /* copy from arg structure */
423 #define _(x) t->x = a->x;
425 #undef _
426 
427  vxlan_rewrite (t, is_ip6);
428  /*
429  * Reconcile the real dev_instance and a possible requested instance.
430  */
431  user_instance = a->instance;
432  if (user_instance == ~0)
433  user_instance = dev_instance;
434  if (hash_get (vxm->instance_used, user_instance))
435  {
436  pool_put (vxm->tunnels, t);
437  return VNET_API_ERROR_INSTANCE_IN_USE;
438  }
439  hash_set (vxm->instance_used, user_instance, 1);
440 
441  t->dev_instance = dev_instance; /* actual */
442  t->user_instance = user_instance; /* name */
443  t->flow_index = ~0;
444 
445  /* copy the key */
446  int add_failed;
447  if (is_ip6)
448  {
449  key6.value = (u64) dev_instance;
450  add_failed = clib_bihash_add_del_24_8 (&vxm->vxlan6_tunnel_by_key,
451  &key6, 1 /*add */ );
452  }
453  else
454  {
455  key4.value = (u64) dev_instance;
456  add_failed = clib_bihash_add_del_16_8 (&vxm->vxlan4_tunnel_by_key,
457  &key4, 1 /*add */ );
458  }
459 
460  if (add_failed)
461  {
462  pool_put (vxm->tunnels, t);
463  return VNET_API_ERROR_INVALID_REGISTRATION;
464  }
465 
467  (vnm, vxlan_device_class.index, dev_instance,
468  vxlan_hw_class.index, dev_instance);
470 
471  /* Set vxlan tunnel output node */
472  u32 encap_index = !is_ip6 ?
473  vxlan4_encap_node.index : vxlan6_encap_node.index;
474  vnet_set_interface_output_node (vnm, t->hw_if_index, encap_index);
475 
476  t->sw_if_index = sw_if_index = hi->sw_if_index;
477 
479  ~0);
480  vxm->tunnel_index_by_sw_if_index[sw_if_index] = dev_instance;
481 
482  /* setup l2 input config with l2 feature and bd 0 to drop packet */
483  vec_validate (l2im->configs, sw_if_index);
484  l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
485  l2im->configs[sw_if_index].bd_index = 0;
486 
487  vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
489  vnet_sw_interface_set_flags (vnm, sw_if_index,
491 
493  fib_prefix_t tun_dst_pfx;
495 
496  fib_prefix_from_ip46_addr (&t->dst, &tun_dst_pfx);
497  if (!ip46_address_is_multicast (&t->dst))
498  {
499  /* Unicast tunnel -
500  * source the FIB entry for the tunnel's destination
501  * and become a child thereof. The tunnel will then get poked
502  * when the forwarding for the entry updates, and the tunnel can
503  * re-stack accordingly
504  */
505  vtep_addr_ref (&t->src);
507  (t->encap_fib_index, &tun_dst_pfx, FIB_SOURCE_RR,
510  (t->fib_entry_index, FIB_NODE_TYPE_VXLAN_TUNNEL, dev_instance);
512  }
513  else
514  {
515  /* Multicast tunnel -
516  * as the same mcast group can be used for mutiple mcast tunnels
517  * with different VNIs, create the output fib adjecency only if
518  * it does not already exist
519  */
520  fib_protocol_t fp = fib_ip_proto (is_ip6);
521 
522  if (vtep_addr_ref (&t->dst) == 1)
523  {
524  fib_node_index_t mfei;
525  adj_index_t ai;
526  fib_route_path_t path = {
527  .frp_proto = fib_proto_to_dpo (fp),
528  .frp_addr = zero_addr,
529  .frp_sw_if_index = 0xffffffff,
530  .frp_fib_index = ~0,
531  .frp_weight = 0,
532  .frp_flags = FIB_ROUTE_PATH_LOCAL,
533  };
534  const mfib_prefix_t mpfx = {
535  .fp_proto = fp,
536  .fp_len = (is_ip6 ? 128 : 32),
537  .fp_grp_addr = tun_dst_pfx.fp_addr,
538  };
539 
540  /*
541  * Setup the (*,G) to receive traffic on the mcast group
542  * - the forwarding interface is for-us
543  * - the accepting interface is that from the API
544  */
546  &mpfx,
548  &path, MFIB_ITF_FLAG_FORWARD);
549 
553  &mpfx,
555  &path,
557 
558  /*
559  * Create the mcast adjacency to send traffic to the group
560  */
561  ai = adj_mcast_add_or_lock (fp,
562  fib_proto_to_link (fp),
563  a->mcast_sw_if_index);
564 
565  /*
566  * create a new end-point
567  */
568  mcast_shared_add (&t->dst, mfei, ai);
569  }
570 
571  dpo_id_t dpo = DPO_INVALID;
572  mcast_shared_t ep = mcast_shared_get (&t->dst);
573 
574  /* Stack shared mcast dst mac addr rewrite on encap */
576  fib_proto_to_dpo (fp), ep.mcast_adj_index);
577 
578  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
579  dpo_reset (&dpo);
580  flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
581  }
582 
583  vnet_get_sw_interface (vnet_get_main (), sw_if_index)->flood_class =
584  flood_class;
585  }
586  else
587  {
588  /* deleting a tunnel: tunnel must exist */
589  if (!p)
590  return VNET_API_ERROR_NO_SUCH_ENTRY;
591 
592  u32 instance = p[0];
593  t = pool_elt_at_index (vxm->tunnels, instance);
594 
595  sw_if_index = t->sw_if_index;
596  vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
597 
598  vxm->tunnel_index_by_sw_if_index[sw_if_index] = ~0;
599 
600  if (!is_ip6)
601  clib_bihash_add_del_16_8 (&vxm->vxlan4_tunnel_by_key, &key4,
602  0 /*del */ );
603  else
604  clib_bihash_add_del_24_8 (&vxm->vxlan6_tunnel_by_key, &key6,
605  0 /*del */ );
606 
607  if (!ip46_address_is_multicast (&t->dst))
608  {
609  if (t->flow_index != ~0)
610  vnet_flow_del (vnm, t->flow_index);
611 
612  vtep_addr_unref (&t->src);
615  }
616  else if (vtep_addr_unref (&t->dst) == 0)
617  {
618  mcast_shared_remove (&t->dst);
619  }
620 
623 
624  fib_node_deinit (&t->node);
625  pool_put (vxm->tunnels, t);
626  }
627 
628  if (sw_if_indexp)
629  *sw_if_indexp = sw_if_index;
630 
631  return 0;
632 }
633 
634 static uword
635 get_decap_next_for_node (u32 node_index, u32 ipv4_set)
636 {
637  vxlan_main_t *vxm = &vxlan_main;
638  vlib_main_t *vm = vxm->vlib_main;
639  uword input_node = (ipv4_set) ? vxlan4_input_node.index :
640  vxlan6_input_node.index;
641 
642  return vlib_node_add_next (vm, input_node, node_index);
643 }
644 
645 static uword
646 unformat_decap_next (unformat_input_t * input, va_list * args)
647 {
648  u32 *result = va_arg (*args, u32 *);
649  u32 ipv4_set = va_arg (*args, int);
650  vxlan_main_t *vxm = &vxlan_main;
651  vlib_main_t *vm = vxm->vlib_main;
652  u32 node_index;
653  u32 tmp;
654 
655  if (unformat (input, "l2"))
656  *result = VXLAN_INPUT_NEXT_L2_INPUT;
657  else if (unformat (input, "node %U", unformat_vlib_node, vm, &node_index))
658  *result = get_decap_next_for_node (node_index, ipv4_set);
659  else if (unformat (input, "%d", &tmp))
660  *result = tmp;
661  else
662  return 0;
663  return 1;
664 }
665 
666 static clib_error_t *
668  unformat_input_t * input,
669  vlib_cli_command_t * cmd)
670 {
671  unformat_input_t _line_input, *line_input = &_line_input;
672  ip46_address_t src = ip46_address_initializer, dst =
674  u8 is_add = 1;
675  u8 src_set = 0;
676  u8 dst_set = 0;
677  u8 grp_set = 0;
678  u8 ipv4_set = 0;
679  u8 ipv6_set = 0;
680  u32 instance = ~0;
681  u32 encap_fib_index = 0;
682  u32 mcast_sw_if_index = ~0;
683  u32 decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT;
684  u32 vni = 0;
685  u32 table_id;
686  clib_error_t *parse_error = NULL;
687 
688  /* Get a line of input. */
689  if (!unformat_user (input, unformat_line_input, line_input))
690  return 0;
691 
692  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
693  {
694  if (unformat (line_input, "del"))
695  {
696  is_add = 0;
697  }
698  else if (unformat (line_input, "instance %d", &instance))
699  ;
700  else if (unformat (line_input, "src %U",
702  {
703  src_set = 1;
704  ip46_address_is_ip4 (&src) ? (ipv4_set = 1) : (ipv6_set = 1);
705  }
706  else if (unformat (line_input, "dst %U",
708  {
709  dst_set = 1;
710  ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1);
711  }
712  else if (unformat (line_input, "group %U %U",
715  vnet_get_main (), &mcast_sw_if_index))
716  {
717  grp_set = dst_set = 1;
718  ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1);
719  }
720  else if (unformat (line_input, "encap-vrf-id %d", &table_id))
721  {
722  encap_fib_index =
723  fib_table_find (fib_ip_proto (ipv6_set), table_id);
724  }
725  else if (unformat (line_input, "decap-next %U", unformat_decap_next,
726  &decap_next_index, ipv4_set))
727  ;
728  else if (unformat (line_input, "vni %d", &vni))
729  ;
730  else
731  {
732  parse_error = clib_error_return (0, "parse error: '%U'",
733  format_unformat_error, line_input);
734  break;
735  }
736  }
737 
738  unformat_free (line_input);
739 
740  if (parse_error)
741  return parse_error;
742 
743  if (encap_fib_index == ~0)
744  return clib_error_return (0, "nonexistent encap-vrf-id %d", table_id);
745 
746  if (src_set == 0)
747  return clib_error_return (0, "tunnel src address not specified");
748 
749  if (dst_set == 0)
750  return clib_error_return (0, "tunnel dst address not specified");
751 
752  if (grp_set && !ip46_address_is_multicast (&dst))
753  return clib_error_return (0, "tunnel group address not multicast");
754 
755  if (grp_set == 0 && ip46_address_is_multicast (&dst))
756  return clib_error_return (0, "dst address must be unicast");
757 
758  if (grp_set && mcast_sw_if_index == ~0)
759  return clib_error_return (0, "tunnel nonexistent multicast device");
760 
761  if (ipv4_set && ipv6_set)
762  return clib_error_return (0, "both IPv4 and IPv6 addresses specified");
763 
764  if (ip46_address_cmp (&src, &dst) == 0)
765  return clib_error_return (0, "src and dst addresses are identical");
766 
767  if (decap_next_index == ~0)
768  return clib_error_return (0, "next node not found");
769 
770  if (vni == 0)
771  return clib_error_return (0, "vni not specified");
772 
773  if (vni >> 24)
774  return clib_error_return (0, "vni %d out of range", vni);
775 
777  .is_add = is_add,
778  .is_ip6 = ipv6_set,
779  .instance = instance,
780 #define _(x) .x = x,
782 #undef _
783  };
784 
785  u32 tunnel_sw_if_index;
786  int rv = vnet_vxlan_add_del_tunnel (&a, &tunnel_sw_if_index);
787 
788  switch (rv)
789  {
790  case 0:
791  if (is_add)
793  vnet_get_main (), tunnel_sw_if_index);
794  break;
795 
796  case VNET_API_ERROR_TUNNEL_EXIST:
797  return clib_error_return (0, "tunnel already exists...");
798 
799  case VNET_API_ERROR_NO_SUCH_ENTRY:
800  return clib_error_return (0, "tunnel does not exist...");
801 
802  case VNET_API_ERROR_INSTANCE_IN_USE:
803  return clib_error_return (0, "Instance is in use");
804 
805  default:
806  return clib_error_return
807  (0, "vnet_vxlan_add_del_tunnel returned %d", rv);
808  }
809 
810  return 0;
811 }
812 
813 /*?
814  * Add or delete a VXLAN Tunnel.
815  *
816  * VXLAN provides the features needed to allow L2 bridge domains (BDs)
817  * to span multiple servers. This is done by building an L2 overlay on
818  * top of an L3 network underlay using VXLAN tunnels.
819  *
820  * This makes it possible for servers to be co-located in the same data
821  * center or be separated geographically as long as they are reachable
822  * through the underlay L3 network.
823  *
824  * You can refer to this kind of L2 overlay bridge domain as a VXLAN
825  * (Virtual eXtensible VLAN) segment.
826  *
827  * @cliexpar
828  * Example of how to create a VXLAN Tunnel:
829  * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 encap-vrf-id 7}
830  * Example of how to create a VXLAN Tunnel with a known name, vxlan_tunnel42:
831  * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 instance 42}
832  * Example of how to create a multicast VXLAN Tunnel with a known name, vxlan_tunnel23:
833  * @cliexcmd{create vxlan tunnel src 10.0.3.1 group 239.1.1.1 GigabitEtherner0/8/0 instance 23}
834  * Example of how to delete a VXLAN Tunnel:
835  * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 del}
836  ?*/
837 /* *INDENT-OFF* */
838 VLIB_CLI_COMMAND (create_vxlan_tunnel_command, static) = {
839  .path = "create vxlan tunnel",
840  .short_help =
841  "create vxlan tunnel src <local-vtep-addr>"
842  " {dst <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>"
843  " [instance <id>]"
844  " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [del]",
846 };
847 /* *INDENT-ON* */
848 
849 static clib_error_t *
851  unformat_input_t * input,
852  vlib_cli_command_t * cmd)
853 {
854  vxlan_main_t *vxm = &vxlan_main;
855  vxlan_tunnel_t *t;
856  int raw = 0;
857 
859  {
860  if (unformat (input, "raw"))
861  raw = 1;
862  else
863  return clib_error_return (0, "parse error: '%U'",
864  format_unformat_error, input);
865  }
866 
867  if (pool_elts (vxm->tunnels) == 0)
868  vlib_cli_output (vm, "No vxlan tunnels configured...");
869 
870 /* *INDENT-OFF* */
871  pool_foreach (t, vxm->tunnels,
872  ({
873  vlib_cli_output (vm, "%U", format_vxlan_tunnel, t);
874  }));
875 /* *INDENT-ON* */
876 
877  if (raw)
878  {
879  vlib_cli_output (vm, "Raw IPv4 Hash Table:\n%U\n",
880  format_bihash_16_8, &vxm->vxlan4_tunnel_by_key,
881  1 /* verbose */ );
882  vlib_cli_output (vm, "Raw IPv6 Hash Table:\n%U\n",
883  format_bihash_24_8, &vxm->vxlan6_tunnel_by_key,
884  1 /* verbose */ );
885  }
886 
887  return 0;
888 }
889 
890 /*?
891  * Display all the VXLAN Tunnel entries.
892  *
893  * @cliexpar
894  * Example of how to display the VXLAN Tunnel entries:
895  * @cliexstart{show vxlan tunnel}
896  * [0] src 10.0.3.1 dst 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2
897  * @cliexend
898  ?*/
899 /* *INDENT-OFF* */
900 VLIB_CLI_COMMAND (show_vxlan_tunnel_command, static) = {
901  .path = "show vxlan tunnel",
902  .short_help = "show vxlan tunnel [raw]",
903  .function = show_vxlan_tunnel_command_fn,
904 };
905 /* *INDENT-ON* */
906 
907 
908 void
909 vnet_int_vxlan_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable)
910 {
911  if (is_ip6)
912  vnet_feature_enable_disable ("ip6-unicast", "ip6-vxlan-bypass",
913  sw_if_index, is_enable, 0, 0);
914  else
915  vnet_feature_enable_disable ("ip4-unicast", "ip4-vxlan-bypass",
916  sw_if_index, is_enable, 0, 0);
917 }
918 
919 
920 static clib_error_t *
922  unformat_input_t * input, vlib_cli_command_t * cmd)
923 {
924  unformat_input_t _line_input, *line_input = &_line_input;
925  vnet_main_t *vnm = vnet_get_main ();
926  clib_error_t *error = 0;
927  u32 sw_if_index, is_enable;
928 
929  sw_if_index = ~0;
930  is_enable = 1;
931 
932  if (!unformat_user (input, unformat_line_input, line_input))
933  return 0;
934 
935  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
936  {
937  if (unformat_user
938  (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
939  ;
940  else if (unformat (line_input, "del"))
941  is_enable = 0;
942  else
943  {
944  error = unformat_parse_error (line_input);
945  goto done;
946  }
947  }
948 
949  if (~0 == sw_if_index)
950  {
951  error = clib_error_return (0, "unknown interface `%U'",
952  format_unformat_error, line_input);
953  goto done;
954  }
955 
956  vnet_int_vxlan_bypass_mode (sw_if_index, is_ip6, is_enable);
957 
958 done:
959  unformat_free (line_input);
960 
961  return error;
962 }
963 
964 static clib_error_t *
966  unformat_input_t * input, vlib_cli_command_t * cmd)
967 {
968  return set_ip_vxlan_bypass (0, input, cmd);
969 }
970 
971 /*?
972  * This command adds the 'ip4-vxlan-bypass' graph node for a given interface.
973  * By adding the IPv4 vxlan-bypass graph node to an interface, the node checks
974  * for and validate input vxlan packet and bypass ip4-lookup, ip4-local,
975  * ip4-udp-lookup nodes to speedup vxlan packet forwarding. This node will
976  * cause extra overhead to for non-vxlan packets which is kept at a minimum.
977  *
978  * @cliexpar
979  * @parblock
980  * Example of graph node before ip4-vxlan-bypass is enabled:
981  * @cliexstart{show vlib graph ip4-vxlan-bypass}
982  * Name Next Previous
983  * ip4-vxlan-bypass error-drop [0]
984  * vxlan4-input [1]
985  * ip4-lookup [2]
986  * @cliexend
987  *
988  * Example of how to enable ip4-vxlan-bypass on an interface:
989  * @cliexcmd{set interface ip vxlan-bypass GigabitEthernet2/0/0}
990  *
991  * Example of graph node after ip4-vxlan-bypass is enabled:
992  * @cliexstart{show vlib graph ip4-vxlan-bypass}
993  * Name Next Previous
994  * ip4-vxlan-bypass error-drop [0] ip4-input
995  * vxlan4-input [1] ip4-input-no-checksum
996  * ip4-lookup [2]
997  * @cliexend
998  *
999  * Example of how to display the feature enabed on an interface:
1000  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1001  * IP feature paths configured on GigabitEthernet2/0/0...
1002  * ...
1003  * ipv4 unicast:
1004  * ip4-vxlan-bypass
1005  * ip4-lookup
1006  * ...
1007  * @cliexend
1008  *
1009  * Example of how to disable ip4-vxlan-bypass on an interface:
1010  * @cliexcmd{set interface ip vxlan-bypass GigabitEthernet2/0/0 del}
1011  * @endparblock
1012 ?*/
1013 /* *INDENT-OFF* */
1014 VLIB_CLI_COMMAND (set_interface_ip_vxlan_bypass_command, static) = {
1015  .path = "set interface ip vxlan-bypass",
1016  .function = set_ip4_vxlan_bypass,
1017  .short_help = "set interface ip vxlan-bypass <interface> [del]",
1018 };
1019 /* *INDENT-ON* */
1020 
1021 static clib_error_t *
1023  unformat_input_t * input, vlib_cli_command_t * cmd)
1024 {
1025  return set_ip_vxlan_bypass (1, input, cmd);
1026 }
1027 
1028 /*?
1029  * This command adds the 'ip6-vxlan-bypass' graph node for a given interface.
1030  * By adding the IPv6 vxlan-bypass graph node to an interface, the node checks
1031  * for and validate input vxlan packet and bypass ip6-lookup, ip6-local,
1032  * ip6-udp-lookup nodes to speedup vxlan packet forwarding. This node will
1033  * cause extra overhead to for non-vxlan packets which is kept at a minimum.
1034  *
1035  * @cliexpar
1036  * @parblock
1037  * Example of graph node before ip6-vxlan-bypass is enabled:
1038  * @cliexstart{show vlib graph ip6-vxlan-bypass}
1039  * Name Next Previous
1040  * ip6-vxlan-bypass error-drop [0]
1041  * vxlan6-input [1]
1042  * ip6-lookup [2]
1043  * @cliexend
1044  *
1045  * Example of how to enable ip6-vxlan-bypass on an interface:
1046  * @cliexcmd{set interface ip6 vxlan-bypass GigabitEthernet2/0/0}
1047  *
1048  * Example of graph node after ip6-vxlan-bypass is enabled:
1049  * @cliexstart{show vlib graph ip6-vxlan-bypass}
1050  * Name Next Previous
1051  * ip6-vxlan-bypass error-drop [0] ip6-input
1052  * vxlan6-input [1] ip4-input-no-checksum
1053  * ip6-lookup [2]
1054  * @cliexend
1055  *
1056  * Example of how to display the feature enabed on an interface:
1057  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1058  * IP feature paths configured on GigabitEthernet2/0/0...
1059  * ...
1060  * ipv6 unicast:
1061  * ip6-vxlan-bypass
1062  * ip6-lookup
1063  * ...
1064  * @cliexend
1065  *
1066  * Example of how to disable ip6-vxlan-bypass on an interface:
1067  * @cliexcmd{set interface ip6 vxlan-bypass GigabitEthernet2/0/0 del}
1068  * @endparblock
1069 ?*/
1070 /* *INDENT-OFF* */
1071 VLIB_CLI_COMMAND (set_interface_ip6_vxlan_bypass_command, static) = {
1072  .path = "set interface ip6 vxlan-bypass",
1073  .function = set_ip6_vxlan_bypass,
1074  .short_help = "set interface ip vxlan-bypass <interface> [del]",
1075 };
1076 /* *INDENT-ON* */
1077 
1078 int
1079 vnet_vxlan_add_del_rx_flow (u32 hw_if_index, u32 t_index, int is_add)
1080 {
1081  vxlan_main_t *vxm = &vxlan_main;
1082  vxlan_tunnel_t *t = pool_elt_at_index (vxm->tunnels, t_index);
1083  vnet_main_t *vnm = vnet_get_main ();
1084  if (is_add)
1085  {
1086  if (t->flow_index == ~0)
1087  {
1088  vxlan_main_t *vxm = &vxlan_main;
1089  vnet_flow_t flow = {
1090  .actions =
1091  VNET_FLOW_ACTION_REDIRECT_TO_NODE | VNET_FLOW_ACTION_MARK,
1092  .mark_flow_id = t->dev_instance + vxm->flow_id_start,
1093  .redirect_node_index = vxlan4_flow_input_node.index,
1094  .type = VNET_FLOW_TYPE_IP4_VXLAN,
1095  .ip4_vxlan = {
1096  .src_addr = t->dst.ip4,
1097  .dst_addr = t->src.ip4,
1098  .dst_port = UDP_DST_PORT_vxlan,
1099  .vni = t->vni,
1100  }
1101  ,
1102  };
1103  vnet_flow_add (vnm, &flow, &t->flow_index);
1104  }
1105  return vnet_flow_enable (vnm, t->flow_index, hw_if_index);
1106  }
1107  /* flow index is removed when the tunnel is deleted */
1108  return vnet_flow_disable (vnm, t->flow_index, hw_if_index);
1109 }
1110 
1111 u32
1113 {
1114  vxlan_main_t *vxm = &vxlan_main;
1115 
1116  if (sw_if_index >= vec_len (vxm->tunnel_index_by_sw_if_index))
1117  return ~0;
1118  return vxm->tunnel_index_by_sw_if_index[sw_if_index];
1119 }
1120 
1121 static clib_error_t *
1123  unformat_input_t * input, vlib_cli_command_t * cmd)
1124 {
1125  unformat_input_t _line_input, *line_input = &_line_input;
1126 
1127  /* Get a line of input. */
1128  if (!unformat_user (input, unformat_line_input, line_input))
1129  return 0;
1130 
1131  vnet_main_t *vnm = vnet_get_main ();
1132  u32 rx_sw_if_index = ~0;
1133  u32 hw_if_index = ~0;
1134  int is_add = 1;
1135 
1136  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1137  {
1138  if (unformat (line_input, "hw %U", unformat_vnet_hw_interface, vnm,
1139  &hw_if_index))
1140  continue;
1141  if (unformat (line_input, "rx %U", unformat_vnet_sw_interface, vnm,
1142  &rx_sw_if_index))
1143  continue;
1144  if (unformat (line_input, "del"))
1145  {
1146  is_add = 0;
1147  continue;
1148  }
1149  return clib_error_return (0, "unknown input `%U'",
1150  format_unformat_error, line_input);
1151  }
1152 
1153  if (rx_sw_if_index == ~0)
1154  return clib_error_return (0, "missing rx interface");
1155  if (hw_if_index == ~0)
1156  return clib_error_return (0, "missing hw interface");
1157 
1158  u32 t_index = vnet_vxlan_get_tunnel_index (rx_sw_if_index);;
1159  if (t_index == ~0)
1160  return clib_error_return (0, "%U is not a vxlan tunnel",
1162  rx_sw_if_index);
1163 
1164  vxlan_main_t *vxm = &vxlan_main;
1165  vxlan_tunnel_t *t = pool_elt_at_index (vxm->tunnels, t_index);
1166 
1167  if (!ip46_address_is_ip4 (&t->dst))
1168  return clib_error_return (0, "currently only IPV4 tunnels are supported");
1169 
1170  vnet_hw_interface_t *hw_if = vnet_get_hw_interface (vnm, hw_if_index);
1171  ip4_main_t *im = &ip4_main;
1172  u32 rx_fib_index =
1174 
1175  if (t->encap_fib_index != rx_fib_index)
1176  return clib_error_return (0, "interface/tunnel fib mismatch");
1177 
1178  if (vnet_vxlan_add_del_rx_flow (hw_if_index, t_index, is_add))
1179  return clib_error_return (0, "error %s flow",
1180  is_add ? "enabling" : "disabling");
1181 
1182  return 0;
1183 }
1184 
1185 /* *INDENT-OFF* */
1186 VLIB_CLI_COMMAND (vxlan_offload_command, static) = {
1187  .path = "set flow-offload vxlan",
1188  .short_help =
1189  "set flow-offload vxlan hw <inerface-name> rx <tunnel-name> [del]",
1190  .function = vxlan_offload_command_fn,
1191 };
1192 /* *INDENT-ON* */
1193 
1194 #define VXLAN_HASH_NUM_BUCKETS (2 * 1024)
1195 #define VXLAN_HASH_MEMORY_SIZE (1 << 20)
1196 
1197 clib_error_t *
1199 {
1200  vxlan_main_t *vxm = &vxlan_main;
1201 
1202  vxm->vnet_main = vnet_get_main ();
1203  vxm->vlib_main = vm;
1204 
1205  vnet_flow_get_range (vxm->vnet_main, "vxlan", 1024 * 1024,
1206  &vxm->flow_id_start);
1207 
1208  /* initialize the ip6 hash */
1209  clib_bihash_init_16_8 (&vxm->vxlan4_tunnel_by_key, "vxlan4",
1211  clib_bihash_init_24_8 (&vxm->vxlan6_tunnel_by_key, "vxlan6",
1213  vxm->vtep6 = hash_create_mem (0, sizeof (ip6_address_t), sizeof (uword));
1214  vxm->mcast_shared = hash_create_mem (0,
1215  sizeof (ip46_address_t),
1216  sizeof (mcast_shared_t));
1217 
1218  udp_register_dst_port (vm, UDP_DST_PORT_vxlan,
1219  vxlan4_input_node.index, /* is_ip4 */ 1);
1220  udp_register_dst_port (vm, UDP_DST_PORT_vxlan6,
1221  vxlan6_input_node.index, /* is_ip4 */ 0);
1222 
1224 
1225  return 0;
1226 }
1227 
1229 
1230 /*
1231  * fd.io coding-style-patch-verification: ON
1232  *
1233  * Local Variables:
1234  * eval: (c-set-style "gnu")
1235  * End:
1236  */
unformat_function_t unformat_vnet_hw_interface
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:437
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:94
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
vmrglw vmrglh hi
u32 user_instance
Definition: vxlan.h:112
Recursive resolution source.
Definition: fib_entry.h:125
Contribute an object that is to be used to forward IP6 packets.
Definition: fib_types.h:103
#define hash_set(h, key, value)
Definition: hash.h:255
l2_input_config_t * configs
Definition: l2_input.h:66
u32 sibling_index
The tunnel is a child of the FIB entry for its desintion.
Definition: vxlan.h:108
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:541
int vnet_flow_get_range(vnet_main_t *vnm, char *owner, u32 count, u32 *start)
Definition: flow.c:24
#define hash_unset(h, key)
Definition: hash.h:261
clib_bihash_24_8_t vxlan6_tunnel_by_key
Definition: vxlan.h:144
static uword ip46_address_is_multicast(ip46_address_t *a)
Definition: ip6_packet.h:157
A representation of a path as described by a route producer.
Definition: fib_types.h:460
ip4_address_t src_address
Definition: ip4_packet.h:169
uword * vtep6
Definition: vxlan.h:149
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
clib_error_t * vxlan_init(vlib_main_t *vm)
Definition: vxlan.c:1198
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
vlib_node_registration_t vxlan4_input_node
(constructor) VLIB_REGISTER_NODE (vxlan4_input_node)
Definition: decap.c:22
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:527
static clib_error_t * set_ip6_vxlan_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:1022
unsigned long u64
Definition: types.h:89
u32 flow_id_start
Definition: vxlan.h:163
#define NULL
Definition: clib.h:55
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:419
uword * mcast_shared
Definition: vxlan.h:152
ip46_address_t dst
Definition: vxlan.h:75
#define vnet_rewrite_set_data(rw, data, data_bytes)
Definition: rewrite.h:138
static void mcast_shared_remove(ip46_address_t *dst)
Definition: vxlan.c:356
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:538
void dpo_copy(dpo_id_t *dst, const dpo_id_t *src)
atomic copy a data-plane object.
Definition: dpo.c:261
static clib_error_t * set_ip4_vxlan_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:965
vlib_node_registration_t vxlan4_flow_input_node
(constructor) VLIB_REGISTER_NODE (vxlan4_flow_input_node)
Definition: decap.c:1288
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:99
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:62
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)
u32 * fib_index_by_sw_if_index
Table index indexed by software interface.
Definition: ip4.h:111
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
dpo_proto_t frp_proto
The protocol of the address below.
Definition: fib_types.h:465
unformat_function_t unformat_vnet_sw_interface
#define VNET_HW_INTERFACE_FLAG_LINK_UP
Definition: interface.h:458
int vnet_flow_disable(vnet_main_t *vnm, u32 flow_index, u32 hw_if_index)
Definition: flow.c:132
static vxlan_tunnel_t * vxlan_tunnel_from_fib_node(fib_node_t *node)
Definition: vxlan.c:166
ip6_address_t src_address
Definition: ip6_packet.h:347
#define ip46_address_cmp(ip46_1, ip46_2)
Definition: ip6_packet.h:85
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:1110
unsigned char u8
Definition: types.h:56
static clib_error_t * show_vxlan_tunnel_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:850
static fib_node_back_walk_rc_t vxlan_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.c:178
enum fib_protocol_t_ fib_protocol_t
Protocol Type.
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
vnet_flood_class_t flood_class
Definition: interface.h:703
vnet_main_t * vnet_main
Definition: vxlan.h:159
VNET_DEVICE_CLASS(vxlan_device_class, static)
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:443
u32 frp_sw_if_index
The interface.
Definition: fib_types.h:495
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:156
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:380
ip4_address_t dst_address
Definition: ip4_packet.h:169
Aggregrate type for a prefix.
Definition: fib_types.h:193
static void vxlan_tunnel_last_lock_gone(fib_node_t *node)
Function definition to inform the FIB node that its last lock has gone.
Definition: vxlan.c:202
vlib_main_t * vlib_main
Definition: vxlan.h:158
#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:219
void adj_unlock(adj_index_t adj_index)
Release a reference counting lock on the adjacency.
Definition: adj.c:240
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:1056
static clib_error_t * vxlan_add_del_tunnel_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:667
fib_node_t node
Linkage into the FIB object graph.
Definition: vxlan.h:93
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:758
Definition: fib_entry.h:275
unformat_function_t unformat_line_input
Definition: format.h:282
int vnet_flow_del(vnet_main_t *vnm, u32 flow_index)
Definition: flow.c:67
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
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:464
static clib_error_t * vxlan_offload_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:1122
static clib_error_t * vxlan_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: vxlan.c:103
ip46_address_t fp_addr
The address type is not deriveable from the fp_addr member.
Definition: fib_types.h:216
dpo_type_t dpoi_type
the type
Definition: dpo.h:172
static const dpo_id_t * load_balance_get_bucket_i(const load_balance_t *lb, u32 bucket)
Definition: load_balance.h:209
struct _unformat_input_t unformat_input_t
load-balancing over a choice of [un]equal cost paths
Definition: dpo.h:102
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:274
The FIB DPO provieds;.
Definition: load_balance.h:84
vxlan_main_t vxlan_main
Definition: vxlan.c:43
#define PREDICT_FALSE(x)
Definition: clib.h:105
vlib_node_registration_t vxlan6_input_node
(constructor) VLIB_REGISTER_NODE (vxlan6_input_node)
Definition: decap.c:23
fib_node_type_t fn_type
The node&#39;s type.
Definition: fib_node.h:291
An node in the FIB graph.
Definition: fib_node.h:287
u8 * format_vxlan_encap_trace(u8 *s, va_list *args)
Definition: encap.c:52
#define ip46_address_initializer
Definition: ip6_packet.h:89
static uword vtep_addr_unref(ip46_address_t *ip)
Definition: vxlan.c:308
u32 flags
Definition: vhost_user.h:110
#define ip46_address_is_ip4(ip46)
Definition: ip6_packet.h:81
#define pool_get_aligned(P, E, A)
Allocate an object E from a pool P (general version).
Definition: pool.h:188
int vnet_vxlan_add_del_rx_flow(u32 hw_if_index, u32 t_index, int is_add)
Definition: vxlan.c:1079
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
int vnet_vxlan_add_del_tunnel(vnet_vxlan_add_del_tunnel_args_t *a, u32 *sw_if_indexp)
Definition: vxlan.c:367
typedef CLIB_PACKED(union{struct{fib_node_index_t mfib_entry_index;adj_index_t mcast_adj_index;};u64 as_u64;})
Definition: vxlan.c:323
u32 dev_instance
Definition: vxlan.h:111
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
vlib_main_t * vm
Definition: buffer.c:294
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
u32 mcast_sw_if_index
Definition: vxlan.h:78
vnet_flood_class_t
Definition: interface.h:626
static vlib_node_runtime_t * vlib_node_get_runtime(vlib_main_t *vm, u32 node_index)
Get node runtime by node index.
Definition: node_funcs.h:89
fib_node_get_t fnv_get
Definition: fib_node.h:275
#define VNET_SW_INTERFACE_FLAG_HIDDEN
Definition: interface.h:673
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:30
static void vnet_set_vni_and_flags(vxlan_header_t *h, u32 vni)
Definition: vxlan_packet.h:62
u32 adj_index_t
An index for adjacencies.
Definition: adj_types.h:30
static uword unformat_decap_next(unformat_input_t *input, va_list *args)
Definition: vxlan.c:646
u32 decap_next_index
Definition: vxlan.h:81
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:1592
Context passed between object during a back walk.
Definition: fib_node.h:200
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
static u8 * format_vxlan_header_with_length(u8 *s, va_list *args)
Definition: vxlan.c:122
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:661
static void vxlan_tunnel_restack_dpo(vxlan_tunnel_t *t)
Definition: vxlan.c:138
#define ASSERT(truth)
static void mcast_shared_add(ip46_address_t *dst, fib_node_index_t mfei, adj_index_t ai)
Definition: vxlan.c:345
long ctx[MAX_CONNS]
Definition: main.c:126
static fib_node_t * vxlan_tunnel_fib_node_get(fib_node_index_t index)
Function definition to get a FIB node from its index.
Definition: vxlan.c:188
static load_balance_t * load_balance_get(index_t lbi)
Definition: load_balance.h:200
IPv4 main type.
Definition: ip4.h:95
uword * vtep4
Definition: vxlan.h:148
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:552
format_function_t format_flow_enabled_hw
Definition: flow.h:184
u32 sw_if_index
Definition: vxlan.h:87
dpo_proto_t fib_proto_to_dpo(fib_protocol_t fib_proto)
Definition: fib_types.c:237
static uword get_decap_next_for_node(u32 node_index, u32 ipv4_set)
Definition: vxlan.c:635
u32 hw_if_index
Definition: vxlan.h:88
u32 vnet_vxlan_get_tunnel_index(u32 sw_if_index)
Definition: vxlan.c:1112
unformat_function_t unformat_ip46_address
Definition: format.h:71
int vnet_flow_add(vnet_main_t *vnm, vnet_flow_t *flow, u32 *flow_index)
Definition: flow.c:43
static void vxlan_rewrite(vxlan_tunnel_t *t, bool is_ip6)
Definition: vxlan.c:231
void vnet_delete_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
Definition: interface.c:968
static uword vtep_addr_ref(ip46_address_t *ip)
Definition: vxlan.c:294
#define vec_elt(v, i)
Get vector value at index i.
#define foreach_copy_field
Definition: vxlan.c:222
#define unformat_parse_error(input)
Definition: format.h:268
uword * instance_used
Definition: vxlan.h:162
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:334
fib_protocol_t fp_proto
protocol type
Definition: mfib_types.h:33
l2input_main_t l2input_main
Definition: l2_input.c:113
index_t dpoi_index
the index of objects of that type
Definition: dpo.h:184
void vnet_int_vxlan_bypass_mode(u32 sw_if_index, u8 is_ip6, u8 is_enable)
Definition: vxlan.c:909
A for-us/local path.
Definition: fib_types.h:322
#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
static clib_error_t * set_ip_vxlan_bypass(u32 is_ip6, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:921
fib_node_index_t fib_entry_index
Definition: vxlan.h:99
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 encap_fib_index
Definition: vxlan.h:84
#define DPO_INVALID
An initialiser for DPOs declared on the stack.
Definition: dpo.h:195
int vnet_flow_enable(vnet_main_t *vnm, u32 flow_index, u32 hw_if_index)
Definition: flow.c:91
unformat_function_t unformat_vlib_node
Definition: node_funcs.h:1165
u32 * tunnel_index_by_sw_if_index
Definition: vxlan.h:155
#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:274
static u8 * format_decap_next(u8 *s, va_list *args)
Definition: vxlan.c:46
vlib_node_registration_t vxlan4_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan4_encap_node)
Definition: encap.c:476
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
ip4_main_t ip4_main
Global ip4 main structure.
Definition: ip4_forward.c:832
clib_bihash_16_8_t vxlan4_tunnel_by_key
Definition: vxlan.h:143
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
vlib_node_registration_t vxlan6_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan6_encap_node)
Definition: encap.c:492
vnet_link_t fib_proto_to_link(fib_protocol_t proto)
Convert from a protocol to a link type.
Definition: fib_types.c:271
clib_error_t * vnet_sw_interface_set_flags(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: interface.c:549
dpo_id_t next_dpo
Definition: vxlan.h:68
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:492
VNET_HW_INTERFACE_CLASS(vxlan_hw_class)
u8 ip_version_and_header_length
Definition: ip4_packet.h:137
#define VXLAN_HASH_NUM_BUCKETS
Definition: vxlan.c:1194
#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:62
static bool vxlan_decap_next_is_valid(vxlan_main_t *vxm, u32 is_ip6, u32 decap_next_index)
Definition: vxlan.c:282
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:681
static u16 ip4_header_checksum(ip4_header_t *i)
Definition: ip4_packet.h:246
vxlan_tunnel_t * tunnels
Definition: vxlan.h:140
#define VXLAN_HASH_MEMORY_SIZE
Definition: vxlan.c:1195
icmpr_flow_t * flow
Definition: main.c:123
const ip46_address_t zero_addr
Definition: lookup.c:318
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
ip46_address_t src
Definition: vxlan.h:74
u8 * format_vxlan_tunnel(u8 *s, va_list *args)
Definition: vxlan.c:58
static u8 * format_vxlan_name(u8 *s, va_list *args)
Definition: vxlan.c:85
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:233
ip6_address_t dst_address
Definition: ip6_packet.h:347
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:170
u32 flow_index
Definition: vxlan.h:110
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128