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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>
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 <vlib/vlib.h>
24 
25 /**
26  * @file
27  * @brief VXLAN GBP.
28  *
29  * VXLAN GBP provides the features of vxlan and carry group policy id.
30  */
31 
32 
34 
35 static u8 *
36 format_decap_next (u8 * s, va_list * args)
37 {
38  u32 next_index = va_arg (*args, u32);
39 
40  if (next_index == VXLAN_GBP_INPUT_NEXT_DROP)
41  return format (s, "drop");
42  else
43  return format (s, "index %d", next_index);
44  return s;
45 }
46 
47 u8 *
48 format_vxlan_gbp_tunnel (u8 * s, va_list * args)
49 {
50  vxlan_gbp_tunnel_t *t = va_arg (*args, vxlan_gbp_tunnel_t *);
51 
52  s = format (s,
53  "[%d] instance %d src %U dst %U vni %d fib-idx %d"
54  " sw-if-idx %d ",
58  t->vni, t->encap_fib_index, t->sw_if_index);
59 
60  s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index);
61 
62  if (PREDICT_FALSE (t->decap_next_index != VXLAN_GBP_INPUT_NEXT_L2_INPUT))
63  s = format (s, "decap-next-%U ", format_decap_next, t->decap_next_index);
64 
66  s = format (s, "mcast-sw-if-idx %d ", t->mcast_sw_if_index);
67 
68  return s;
69 }
70 
71 static u8 *
72 format_vxlan_gbp_name (u8 * s, va_list * args)
73 {
74  u32 dev_instance = va_arg (*args, u32);
77 
78  if (dev_instance == ~0)
79  return format (s, "<cached-unused>");
80 
81  if (dev_instance >= vec_len (vxm->tunnels))
82  return format (s, "<improperly-referenced>");
83 
84  t = pool_elt_at_index (vxm->tunnels, dev_instance);
85 
86  return format (s, "vxlan_gbp_tunnel%d", t->user_instance);
87 }
88 
89 static clib_error_t *
91  u32 flags)
92 {
93  u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
95  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
96 
97  return /* no error */ 0;
98 }
99 
100 /* *INDENT-OFF* */
101 VNET_DEVICE_CLASS (vxlan_gbp_device_class, static) = {
102  .name = "VXLAN-GBP",
103  .format_device_name = format_vxlan_gbp_name,
104  .format_tx_trace = format_vxlan_gbp_encap_trace,
105  .admin_up_down_function = vxlan_gbp_interface_admin_up_down,
106 };
107 /* *INDENT-ON* */
108 
109 static u8 *
111 {
112  u32 dev_instance = va_arg (*args, u32);
113  s = format (s, "unimplemented dev %u", dev_instance);
114  return s;
115 }
116 
117 /* *INDENT-OFF* */
118 VNET_HW_INTERFACE_CLASS (vxlan_gbp_hw_class) = {
119  .name = "VXLAN-GBP",
120  .format_header = format_vxlan_gbp_header_with_length,
121  .build_rewrite = default_build_rewrite,
122 };
123 /* *INDENT-ON* */
124 
125 static void
127 {
128  u8 is_ip4 = ip46_address_is_ip4 (&t->dst);
129  dpo_id_t dpo = DPO_INVALID;
130  fib_forward_chain_type_t forw_type = is_ip4 ?
132 
133  fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
134 
135  /* vxlan_gbp uses the payload hash as the udp source port
136  * hence the packet's hash is unknown
137  * skip single bucket load balance dpo's */
138  while (DPO_LOAD_BALANCE == dpo.dpoi_type)
139  {
141  if (lb->lb_n_buckets > 1)
142  break;
143 
144  dpo_copy (&dpo, load_balance_get_bucket_i (lb, 0));
145  }
146 
147  u32 encap_index = is_ip4 ?
149  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
150  dpo_reset (&dpo);
151 }
152 
153 static vxlan_gbp_tunnel_t *
155 {
157  return ((vxlan_gbp_tunnel_t *) (((char *) node) -
159  node)));
160 }
161 
162 /**
163  * Function definition to backwalk a FIB node -
164  * Here we will restack the new dpo of VXLAN DIP to encap node.
165  */
168 {
171 }
172 
173 /**
174  * Function definition to get a FIB node from its index
175  */
176 static fib_node_t *
178 {
181 
182  t = pool_elt_at_index (vxm->tunnels, index);
183 
184  return (&t->node);
185 }
186 
187 /**
188  * Function definition to inform the FIB node that its last lock has gone.
189  */
190 static void
192 {
193  /*
194  * The VXLAN GBP tunnel is a root of the graph. As such
195  * it never has children and thus is never locked.
196  */
197  ASSERT (0);
198 }
199 
200 /*
201  * Virtual function table registered by VXLAN GBP tunnels
202  * for participation in the FIB object graph.
203  */
204 const static fib_node_vft_t vxlan_gbp_vft = {
206  .fnv_last_lock = vxlan_gbp_tunnel_last_lock_gone,
207  .fnv_back_walk = vxlan_gbp_tunnel_back_walk,
208 };
209 
210 
211 #define foreach_copy_field \
212 _(vni) \
213 _(mcast_sw_if_index) \
214 _(encap_fib_index) \
215 _(decap_next_index) \
216 _(src) \
217 _(dst)
218 
219 static void
221 {
222  union
223  {
224  ip4_vxlan_gbp_header_t h4;
225  ip6_vxlan_gbp_header_t h6;
226  } h;
227  int len = is_ip6 ? sizeof h.h6 : sizeof h.h4;
228 
229  udp_header_t *udp;
230  vxlan_gbp_header_t *vxlan_gbp;
231  /* Fixed portion of the (outer) ip header */
232 
233  memset (&h, 0, sizeof (h));
234  if (!is_ip6)
235  {
236  ip4_header_t *ip = &h.h4.ip4;
237  udp = &h.h4.udp, vxlan_gbp = &h.h4.vxlan_gbp;
238  ip->ip_version_and_header_length = 0x45;
239  ip->ttl = 254;
240  ip->protocol = IP_PROTOCOL_UDP;
241 
242  ip->src_address = t->src.ip4;
243  ip->dst_address = t->dst.ip4;
244 
245  /* we fix up the ip4 header length and checksum after-the-fact */
246  ip->checksum = ip4_header_checksum (ip);
247  }
248  else
249  {
250  ip6_header_t *ip = &h.h6.ip6;
251  udp = &h.h6.udp, vxlan_gbp = &h.h6.vxlan_gbp;
253  clib_host_to_net_u32 (6 << 28);
254  ip->hop_limit = 255;
255  ip->protocol = IP_PROTOCOL_UDP;
256 
257  ip->src_address = t->src.ip6;
258  ip->dst_address = t->dst.ip6;
259  }
260 
261  /* UDP header, randomize src port on something, maybe? */
262  udp->src_port = clib_host_to_net_u16 (47789);
263  udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_vxlan_gbp);
264 
265  /* VXLAN header */
266  vxlan_gbp_set_header (vxlan_gbp, t->vni);
267  vnet_rewrite_set_data (*t, &h, len);
268 }
269 
270 static bool
273 {
274  vlib_main_t *vm = vxm->vlib_main;
275  u32 input_idx = (!is_ip6) ?
277  vlib_node_runtime_t *r = vlib_node_get_runtime (vm, input_idx);
278 
279  return decap_next_index < r->n_next_nodes;
280 }
281 
282 static uword
283 vtep_addr_ref (ip46_address_t * ip)
284 {
285  uword *vtep = ip46_address_is_ip4 (ip) ?
286  hash_get (vxlan_gbp_main.vtep4, ip->ip4.as_u32) :
287  hash_get_mem (vxlan_gbp_main.vtep6, &ip->ip6);
288  if (vtep)
289  return ++(*vtep);
290  ip46_address_is_ip4 (ip) ?
291  hash_set (vxlan_gbp_main.vtep4, ip->ip4.as_u32, 1) :
292  hash_set_mem_alloc (&vxlan_gbp_main.vtep6, &ip->ip6, 1);
293  return 1;
294 }
295 
296 static uword
297 vtep_addr_unref (ip46_address_t * ip)
298 {
299  uword *vtep = ip46_address_is_ip4 (ip) ?
300  hash_get (vxlan_gbp_main.vtep4, ip->ip4.as_u32) :
301  hash_get_mem (vxlan_gbp_main.vtep6, &ip->ip6);
302  ASSERT (vtep);
303  if (--(*vtep) != 0)
304  return *vtep;
305  ip46_address_is_ip4 (ip) ?
306  hash_unset (vxlan_gbp_main.vtep4, ip->ip4.as_u32) :
307  hash_unset_mem_free (&vxlan_gbp_main.vtep6, &ip->ip6);
308  return 0;
309 }
310 
311 /* *INDENT-OFF* */
312 typedef CLIB_PACKED(union
313 {
314  struct
315  {
316  fib_node_index_t mfib_entry_index;
317  adj_index_t mcast_adj_index;
318  };
319  u64 as_u64;
320 }) mcast_shared_t;
321 /* *INDENT-ON* */
322 
323 static inline mcast_shared_t
324 mcast_shared_get (ip46_address_t * ip)
325 {
327  uword *p = hash_get_mem (vxlan_gbp_main.mcast_shared, ip);
328  ASSERT (p);
329  mcast_shared_t ret = {.as_u64 = *p };
330  return ret;
331 }
332 
333 static inline void
334 mcast_shared_add (ip46_address_t * dst, fib_node_index_t mfei, adj_index_t ai)
335 {
336  mcast_shared_t new_ep = {
337  .mcast_adj_index = ai,
338  .mfib_entry_index = mfei,
339  };
340 
341  hash_set_mem_alloc (&vxlan_gbp_main.mcast_shared, dst, new_ep.as_u64);
342 }
343 
344 static inline void
345 mcast_shared_remove (ip46_address_t * dst)
346 {
347  mcast_shared_t ep = mcast_shared_get (dst);
348 
349  adj_unlock (ep.mcast_adj_index);
351 
352  hash_unset_mem_free (&vxlan_gbp_main.mcast_shared, dst);
353 }
354 
357 {
359  vxlan_gbp_tunnel_t *t = 0;
360  vnet_main_t *vnm = vxm->vnet_main;
361  u64 *p;
362  u32 sw_if_index = ~0;
365  u32 is_ip6 = a->is_ip6;
366 
367  int not_found;
368  if (!is_ip6)
369  {
370  key4.key[0] = a->dst.ip4.as_u32;
371  key4.key[1] = (((u64) a->encap_fib_index) << 32)
372  | clib_host_to_net_u32 (a->vni << 8);
373  not_found =
374  clib_bihash_search_inline_16_8 (&vxm->vxlan4_gbp_tunnel_by_key,
375  &key4);
376  p = &key4.value;
377  }
378  else
379  {
380  key6.key[0] = a->dst.ip6.as_u64[0];
381  key6.key[1] = a->dst.ip6.as_u64[1];
382  key6.key[2] = (((u64) a->encap_fib_index) << 32)
383  | clib_host_to_net_u32 (a->vni << 8);
384  not_found =
385  clib_bihash_search_inline_24_8 (&vxm->vxlan6_gbp_tunnel_by_key,
386  &key6);
387  p = &key6.value;
388  }
389 
390  if (not_found)
391  p = 0;
392 
393  if (a->is_add)
394  {
395  l2input_main_t *l2im = &l2input_main;
396  u32 dev_instance; /* real dev instance tunnel index */
397  u32 user_instance; /* request and actual instance number */
398 
399  /* adding a tunnel: tunnel must not already exist */
400  if (p)
401  return VNET_API_ERROR_TUNNEL_EXIST;
402 
403  /* if not set explicitly, default to l2 */
404  if (a->decap_next_index == ~0)
405  a->decap_next_index = VXLAN_GBP_INPUT_NEXT_L2_INPUT;
406  if (!vxlan_gbp_decap_next_is_valid (vxm, is_ip6, a->decap_next_index))
407  return VNET_API_ERROR_INVALID_DECAP_NEXT;
408 
410  memset (t, 0, sizeof (*t));
411  dev_instance = t - vxm->tunnels;
412 
413  /* copy from arg structure */
414 #define _(x) t->x = a->x;
416 #undef _
417 
418  vxlan_gbp_rewrite (t, is_ip6);
419  /*
420  * Reconcile the real dev_instance and a possible requested instance.
421  */
422  user_instance = a->instance;
423  if (user_instance == ~0)
424  user_instance = dev_instance;
425  if (hash_get (vxm->instance_used, user_instance))
426  {
427  pool_put (vxm->tunnels, t);
428  return VNET_API_ERROR_INSTANCE_IN_USE;
429  }
430  hash_set (vxm->instance_used, user_instance, 1);
431 
432  t->dev_instance = dev_instance; /* actual */
433  t->user_instance = user_instance; /* name */
434 
435  /* copy the key */
436  int add_failed;
437  if (is_ip6)
438  {
439  key6.value = (u64) dev_instance;
440  add_failed =
441  clib_bihash_add_del_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, &key6,
442  1 /*add */ );
443  }
444  else
445  {
446  key4.value = (u64) dev_instance;
447  add_failed =
448  clib_bihash_add_del_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, &key4,
449  1 /*add */ );
450  }
451 
452  if (add_failed)
453  {
454  pool_put (vxm->tunnels, t);
455  return VNET_API_ERROR_INVALID_REGISTRATION;
456  }
457 
459  (vnm, vxlan_gbp_device_class.index, dev_instance,
460  vxlan_gbp_hw_class.index, dev_instance);
462 
463  /* Set vxlan_gbp tunnel output node */
464  u32 encap_index = !is_ip6 ?
466  vnet_set_interface_output_node (vnm, t->hw_if_index, encap_index);
467 
468  t->sw_if_index = sw_if_index = hi->sw_if_index;
469 
471  ~0);
472  vxm->tunnel_index_by_sw_if_index[sw_if_index] = dev_instance;
473 
474  /* setup l2 input config with l2 feature and bd 0 to drop packet */
475  vec_validate (l2im->configs, sw_if_index);
476  l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
477  l2im->configs[sw_if_index].bd_index = 0;
478 
479  vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
481  vnet_sw_interface_set_flags (vnm, sw_if_index,
483 
485  fib_prefix_t tun_dst_pfx;
487 
488  fib_prefix_from_ip46_addr (&t->dst, &tun_dst_pfx);
489  if (!ip46_address_is_multicast (&t->dst))
490  {
491  /* Unicast tunnel -
492  * source the FIB entry for the tunnel's destination
493  * and become a child thereof. The tunnel will then get poked
494  * when the forwarding for the entry updates, and the tunnel can
495  * re-stack accordingly
496  */
497  vtep_addr_ref (&t->src);
499  (t->encap_fib_index, &tun_dst_pfx, FIB_SOURCE_RR,
503  dev_instance);
505  }
506  else
507  {
508  /* Multicast tunnel -
509  * as the same mcast group can be used for multiple mcast tunnels
510  * with different VNIs, create the output fib adjacency only if
511  * it does not already exist
512  */
513  fib_protocol_t fp = fib_ip_proto (is_ip6);
514 
515  if (vtep_addr_ref (&t->dst) == 1)
516  {
517  fib_node_index_t mfei;
518  adj_index_t ai;
519  fib_route_path_t path = {
520  .frp_proto = fib_proto_to_dpo (fp),
521  .frp_addr = zero_addr,
522  .frp_sw_if_index = 0xffffffff,
523  .frp_fib_index = ~0,
524  .frp_weight = 0,
525  .frp_flags = FIB_ROUTE_PATH_LOCAL,
526  };
527  const mfib_prefix_t mpfx = {
528  .fp_proto = fp,
529  .fp_len = (is_ip6 ? 128 : 32),
530  .fp_grp_addr = tun_dst_pfx.fp_addr,
531  };
532 
533  /*
534  * Setup the (*,G) to receive traffic on the mcast group
535  * - the forwarding interface is for-us
536  * - the accepting interface is that from the API
537  */
539  &mpfx,
541  &path, MFIB_ITF_FLAG_FORWARD);
542 
546  &mpfx,
548  &path,
550 
551  /*
552  * Create the mcast adjacency to send traffic to the group
553  */
554  ai = adj_mcast_add_or_lock (fp,
555  fib_proto_to_link (fp),
556  a->mcast_sw_if_index);
557 
558  /*
559  * create a new end-point
560  */
561  mcast_shared_add (&t->dst, mfei, ai);
562  }
563 
564  dpo_id_t dpo = DPO_INVALID;
565  mcast_shared_t ep = mcast_shared_get (&t->dst);
566 
567  /* Stack shared mcast dst mac addr rewrite on encap */
569  fib_proto_to_dpo (fp), ep.mcast_adj_index);
570 
571  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
572  dpo_reset (&dpo);
573  flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
574  }
575 
576  vnet_get_sw_interface (vnet_get_main (), sw_if_index)->flood_class =
577  flood_class;
578  }
579  else
580  {
581  /* deleting a tunnel: tunnel must exist */
582  if (!p)
583  return VNET_API_ERROR_NO_SUCH_ENTRY;
584 
585  u32 instance = p[0];
586  t = pool_elt_at_index (vxm->tunnels, instance);
587 
588  sw_if_index = t->sw_if_index;
589  vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
590 
592 
593  if (!is_ip6)
594  clib_bihash_add_del_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, &key4,
595  0 /*del */ );
596  else
597  clib_bihash_add_del_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, &key6,
598  0 /*del */ );
599 
600  if (!ip46_address_is_multicast (&t->dst))
601  {
602  vtep_addr_unref (&t->src);
605  }
606  else if (vtep_addr_unref (&t->dst) == 0)
607  {
608  mcast_shared_remove (&t->dst);
609  }
610 
613 
614  fib_node_deinit (&t->node);
615  pool_put (vxm->tunnels, t);
616  }
617 
618  if (sw_if_indexp)
619  *sw_if_indexp = sw_if_index;
620 
621  return 0;
622 }
623 
624 static uword
625 get_decap_next_for_node (u32 node_index, u32 ipv4_set)
626 {
628  vlib_main_t *vm = vxm->vlib_main;
629  uword input_node = (ipv4_set) ? vxlan4_gbp_input_node.index :
630  vxlan6_gbp_input_node.index;
631 
632  return vlib_node_add_next (vm, input_node, node_index);
633 }
634 
635 static uword
636 unformat_decap_next (unformat_input_t * input, va_list * args)
637 {
638  u32 *result = va_arg (*args, u32 *);
639  u32 ipv4_set = va_arg (*args, int);
641  vlib_main_t *vm = vxm->vlib_main;
642  u32 node_index;
643  u32 tmp;
644 
645  if (unformat (input, "l2"))
646  *result = VXLAN_GBP_INPUT_NEXT_L2_INPUT;
647  else if (unformat (input, "node %U", unformat_vlib_node, vm, &node_index))
648  *result = get_decap_next_for_node (node_index, ipv4_set);
649  else if (unformat (input, "%d", &tmp))
650  *result = tmp;
651  else
652  return 0;
653  return 1;
654 }
655 
656 static clib_error_t *
658  unformat_input_t * input,
659  vlib_cli_command_t * cmd)
660 {
661  unformat_input_t _line_input, *line_input = &_line_input;
662  ip46_address_t src = ip46_address_initializer, dst =
664  u8 is_add = 1;
665  u8 src_set = 0;
666  u8 dst_set = 0;
667  u8 grp_set = 0;
668  u8 ipv4_set = 0;
669  u8 ipv6_set = 0;
670  u32 instance = ~0;
671  u32 encap_fib_index = 0;
672  u32 mcast_sw_if_index = ~0;
673  u32 decap_next_index = VXLAN_GBP_INPUT_NEXT_L2_INPUT;
674  u32 vni = 0;
675  u32 table_id;
676  clib_error_t *parse_error = NULL;
677 
678  /* Get a line of input. */
679  if (!unformat_user (input, unformat_line_input, line_input))
680  return 0;
681 
682  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
683  {
684  if (unformat (line_input, "del"))
685  {
686  is_add = 0;
687  }
688  else if (unformat (line_input, "instance %d", &instance))
689  ;
690  else if (unformat (line_input, "src %U",
692  {
693  src_set = 1;
694  ip46_address_is_ip4 (&src) ? (ipv4_set = 1) : (ipv6_set = 1);
695  }
696  else if (unformat (line_input, "dst %U",
698  {
699  dst_set = 1;
700  ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1);
701  }
702  else if (unformat (line_input, "group %U %U",
705  vnet_get_main (), &mcast_sw_if_index))
706  {
707  grp_set = dst_set = 1;
708  ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1);
709  }
710  else if (unformat (line_input, "encap-vrf-id %d", &table_id))
711  {
712  encap_fib_index =
713  fib_table_find (fib_ip_proto (ipv6_set), table_id);
714  }
715  else if (unformat (line_input, "decap-next %U", unformat_decap_next,
716  &decap_next_index, ipv4_set))
717  ;
718  else if (unformat (line_input, "vni %d", &vni))
719  ;
720  else
721  {
722  parse_error = clib_error_return (0, "parse error: '%U'",
723  format_unformat_error, line_input);
724  break;
725  }
726  }
727 
728  unformat_free (line_input);
729 
730  if (parse_error)
731  return parse_error;
732 
733  if (encap_fib_index == ~0)
734  return clib_error_return (0, "nonexistent encap-vrf-id %d", table_id);
735 
736  if (src_set == 0)
737  return clib_error_return (0, "tunnel src address not specified");
738 
739  if (dst_set == 0)
740  return clib_error_return (0, "tunnel dst address not specified");
741 
742  if (grp_set && !ip46_address_is_multicast (&dst))
743  return clib_error_return (0, "tunnel group address not multicast");
744 
745  if (grp_set == 0 && ip46_address_is_multicast (&dst))
746  return clib_error_return (0, "dst address must be unicast");
747 
748  if (grp_set && mcast_sw_if_index == ~0)
749  return clib_error_return (0, "tunnel nonexistent multicast device");
750 
751  if (ipv4_set && ipv6_set)
752  return clib_error_return (0, "both IPv4 and IPv6 addresses specified");
753 
754  if (ip46_address_cmp (&src, &dst) == 0)
755  return clib_error_return (0, "src and dst addresses are identical");
756 
757  if (decap_next_index == ~0)
758  return clib_error_return (0, "next node not found");
759 
760  if (vni == 0)
761  return clib_error_return (0, "vni not specified");
762 
763  if (vni >> 24)
764  return clib_error_return (0, "vni %d out of range", vni);
765 
767  .is_add = is_add,
768  .is_ip6 = ipv6_set,
769  .instance = instance,
770 #define _(x) .x = x,
772 #undef _
773  };
774 
775  u32 tunnel_sw_if_index;
776  int rv = vnet_vxlan_gbp_tunnel_add_del (&a, &tunnel_sw_if_index);
777 
778  switch (rv)
779  {
780  case 0:
781  if (is_add)
783  vnet_get_main (), tunnel_sw_if_index);
784  break;
785 
786  case VNET_API_ERROR_TUNNEL_EXIST:
787  return clib_error_return (0, "tunnel already exists...");
788 
789  case VNET_API_ERROR_NO_SUCH_ENTRY:
790  return clib_error_return (0, "tunnel does not exist...");
791 
792  case VNET_API_ERROR_INSTANCE_IN_USE:
793  return clib_error_return (0, "Instance is in use");
794 
795  default:
796  return clib_error_return
797  (0, "vnet_vxlan_gbp_tunnel_add_del returned %d", rv);
798  }
799 
800  return 0;
801 }
802 
803 /*?
804  * Add or delete a VXLAN Tunnel.
805  *
806  * VXLAN provides the features needed to allow L2 bridge domains (BDs)
807  * to span multiple servers. This is done by building an L2 overlay on
808  * top of an L3 network underlay using VXLAN tunnels.
809  *
810  * This makes it possible for servers to be co-located in the same data
811  * center or be separated geographically as long as they are reachable
812  * through the underlay L3 network.
813  *
814  * You can refer to this kind of L2 overlay bridge domain as a VXLAN
815  * (Virtual eXtensible VLAN) segment.
816  *
817  * @cliexpar
818  * Example of how to create a VXLAN Tunnel:
819  * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 encap-vrf-id 7}
820  * Example of how to create a VXLAN Tunnel with a known name, vxlan_gbp_tunnel42:
821  * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 dst 10.0.3.3 instance 42}
822  * Example of how to create a multicast VXLAN Tunnel with a known name, vxlan_gbp_tunnel23:
823  * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 group 239.1.1.1 GigabitEthernet0/8/0 instance 23}
824  * Example of how to delete a VXLAN Tunnel:
825  * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 del}
826  ?*/
827 /* *INDENT-OFF* */
828 VLIB_CLI_COMMAND (create_vxlan_gbp_tunnel_command, static) = {
829  .path = "create vxlan-gbp tunnel",
830  .short_help =
831  "create vxlan-gbp tunnel src <local-vtep-addr>"
832  " {dst <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>"
833  " [instance <id>]"
834  " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [del]",
836 };
837 /* *INDENT-ON* */
838 
839 static clib_error_t *
841  unformat_input_t * input,
842  vlib_cli_command_t * cmd)
843 {
846  int raw = 0;
847 
849  {
850  if (unformat (input, "raw"))
851  raw = 1;
852  else
853  return clib_error_return (0, "parse error: '%U'",
854  format_unformat_error, input);
855  }
856 
857  if (pool_elts (vxm->tunnels) == 0)
858  vlib_cli_output (vm, "No vxlan-gbp tunnels configured...");
859 
860 /* *INDENT-OFF* */
861  pool_foreach (t, vxm->tunnels,
862  ({
863  vlib_cli_output (vm, "%U", format_vxlan_gbp_tunnel, t);
864  }));
865 /* *INDENT-ON* */
866 
867  if (raw)
868  {
869  vlib_cli_output (vm, "Raw IPv4 Hash Table:\n%U\n",
870  format_bihash_16_8, &vxm->vxlan4_gbp_tunnel_by_key,
871  1 /* verbose */ );
872  vlib_cli_output (vm, "Raw IPv6 Hash Table:\n%U\n",
873  format_bihash_24_8, &vxm->vxlan6_gbp_tunnel_by_key,
874  1 /* verbose */ );
875  }
876 
877  return 0;
878 }
879 
880 /*?
881  * Display all the VXLAN Tunnel entries.
882  *
883  * @cliexpar
884  * Example of how to display the VXLAN Tunnel entries:
885  * @cliexstart{show vxlan_gbp tunnel}
886  * [0] src 10.0.3.1 dst 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2
887  * @cliexend
888  ?*/
889 /* *INDENT-OFF* */
890 VLIB_CLI_COMMAND (show_vxlan_gbp_tunnel_command, static) = {
891  .path = "show vxlan-gbp tunnel",
892  .short_help = "show vxlan-gbp tunnel [raw]",
894 };
895 /* *INDENT-ON* */
896 
897 
898 void
900 {
901  if (is_ip6)
902  vnet_feature_enable_disable ("ip6-unicast", "ip6-vxlan-gbp-bypass",
903  sw_if_index, is_enable, 0, 0);
904  else
905  vnet_feature_enable_disable ("ip4-unicast", "ip4-vxlan-gbp-bypass",
906  sw_if_index, is_enable, 0, 0);
907 }
908 
909 
910 static clib_error_t *
912  unformat_input_t * input, vlib_cli_command_t * cmd)
913 {
914  unformat_input_t _line_input, *line_input = &_line_input;
915  vnet_main_t *vnm = vnet_get_main ();
916  clib_error_t *error = 0;
917  u32 sw_if_index, is_enable;
918 
919  sw_if_index = ~0;
920  is_enable = 1;
921 
922  if (!unformat_user (input, unformat_line_input, line_input))
923  return 0;
924 
925  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
926  {
927  if (unformat_user
928  (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
929  ;
930  else if (unformat (line_input, "del"))
931  is_enable = 0;
932  else
933  {
934  error = unformat_parse_error (line_input);
935  goto done;
936  }
937  }
938 
939  if (~0 == sw_if_index)
940  {
941  error = clib_error_return (0, "unknown interface `%U'",
942  format_unformat_error, line_input);
943  goto done;
944  }
945 
946  vnet_int_vxlan_gbp_bypass_mode (sw_if_index, is_ip6, is_enable);
947 
948 done:
949  unformat_free (line_input);
950 
951  return error;
952 }
953 
954 static clib_error_t *
956  unformat_input_t * input, vlib_cli_command_t * cmd)
957 {
958  return set_ip_vxlan_gbp_bypass (0, input, cmd);
959 }
960 
961 /*?
962  * This command adds the 'ip4-vxlan-gbp-bypass' graph node for a given interface.
963  * By adding the IPv4 vxlan_gbp-bypass graph node to an interface, the node checks
964  * for and validate input vxlan_gbp packet and bypass ip4-lookup, ip4-local,
965  * ip4-udp-lookup nodes to speedup vxlan_gbp packet forwarding. This node will
966  * cause extra overhead to for non-vxlan_gbp packets which is kept at a minimum.
967  *
968  * @cliexpar
969  * @parblock
970  * Example of graph node before ip4-vxlan_gbp-bypass is enabled:
971  * @cliexstart{show vlib graph ip4-vxlan_gbp-bypass}
972  * Name Next Previous
973  * ip4-vxlan-gbp-bypass error-drop [0]
974  * vxlan4-gbp-input [1]
975  * ip4-lookup [2]
976  * @cliexend
977  *
978  * Example of how to enable ip4-vxlan-gbp-bypass on an interface:
979  * @cliexcmd{set interface ip vxlan-gbp-bypass GigabitEthernet2/0/0}
980  *
981  * Example of graph node after ip4-vxlan-gbp-bypass is enabled:
982  * @cliexstart{show vlib graph ip4-vxlan-gbp-bypass}
983  * Name Next Previous
984  * ip4-vxlan-gbp-bypass error-drop [0] ip4-input
985  * vxlan4-gbp-input [1] ip4-input-no-checksum
986  * ip4-lookup [2]
987  * @cliexend
988  *
989  * Example of how to display the feature enabled on an interface:
990  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
991  * IP feature paths configured on GigabitEthernet2/0/0...
992  * ...
993  * ipv4 unicast:
994  * ip4-vxlan-gbp-bypass
995  * ip4-lookup
996  * ...
997  * @cliexend
998  *
999  * Example of how to disable ip4-vxlan-gbp-bypass on an interface:
1000  * @cliexcmd{set interface ip vxlan-gbp-bypass GigabitEthernet2/0/0 del}
1001  * @endparblock
1002 ?*/
1003 /* *INDENT-OFF* */
1004 VLIB_CLI_COMMAND (set_interface_ip_vxlan_gbp_bypass_command, static) = {
1005  .path = "set interface ip vxlan-gbp-bypass",
1006  .function = set_ip4_vxlan_gbp_bypass,
1007  .short_help = "set interface ip vxlan-gbp-bypass <interface> [del]",
1008 };
1009 /* *INDENT-ON* */
1010 
1011 static clib_error_t *
1013  unformat_input_t * input, vlib_cli_command_t * cmd)
1014 {
1015  return set_ip_vxlan_gbp_bypass (1, input, cmd);
1016 }
1017 
1018 /*?
1019  * This command adds the 'ip6-vxlan-gbp-bypass' graph node for a given interface.
1020  * By adding the IPv6 vxlan-gbp-bypass graph node to an interface, the node checks
1021  * for and validate input vxlan_gbp packet and bypass ip6-lookup, ip6-local,
1022  * ip6-udp-lookup nodes to speedup vxlan_gbp packet forwarding. This node will
1023  * cause extra overhead to for non-vxlan packets which is kept at a minimum.
1024  *
1025  * @cliexpar
1026  * @parblock
1027  * Example of graph node before ip6-vxlan-gbp-bypass is enabled:
1028  * @cliexstart{show vlib graph ip6-vxlan-gbp-bypass}
1029  * Name Next Previous
1030  * ip6-vxlan-gbp-bypass error-drop [0]
1031  * vxlan6-gbp-input [1]
1032  * ip6-lookup [2]
1033  * @cliexend
1034  *
1035  * Example of how to enable ip6-vxlan-gbp-bypass on an interface:
1036  * @cliexcmd{set interface ip6 vxlan-gbp-bypass GigabitEthernet2/0/0}
1037  *
1038  * Example of graph node after ip6-vxlan-gbp-bypass is enabled:
1039  * @cliexstart{show vlib graph ip6-vxlan-gbp-bypass}
1040  * Name Next Previous
1041  * ip6-vxlan-gbp-bypass error-drop [0] ip6-input
1042  * vxlan6-gbp-input [1] ip4-input-no-checksum
1043  * ip6-lookup [2]
1044  * @cliexend
1045  *
1046  * Example of how to display the feature enabled on an interface:
1047  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1048  * IP feature paths configured on GigabitEthernet2/0/0...
1049  * ...
1050  * ipv6 unicast:
1051  * ip6-vxlan-gbp-bypass
1052  * ip6-lookup
1053  * ...
1054  * @cliexend
1055  *
1056  * Example of how to disable ip6-vxlan-gbp-bypass on an interface:
1057  * @cliexcmd{set interface ip6 vxlan-gbp-bypass GigabitEthernet2/0/0 del}
1058  * @endparblock
1059 ?*/
1060 /* *INDENT-OFF* */
1061 VLIB_CLI_COMMAND (set_interface_ip6_vxlan_gbp_bypass_command, static) = {
1062  .path = "set interface ip6 vxlan-gbp-bypass",
1063  .function = set_ip6_vxlan_gbp_bypass,
1064  .short_help = "set interface ip vxlan-gbp-bypass <interface> [del]",
1065 };
1066 /* *INDENT-ON* */
1067 
1068 #define VXLAN_GBP_HASH_NUM_BUCKETS (2 * 1024)
1069 #define VXLAN_GBP_HASH_MEMORY_SIZE (1 << 20)
1070 
1071 clib_error_t *
1073 {
1075 
1076  vxm->vnet_main = vnet_get_main ();
1077  vxm->vlib_main = vm;
1078 
1079  /* initialize the ip6 hash */
1080  clib_bihash_init_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, "vxlan4-gbp",
1083  clib_bihash_init_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, "vxlan6-gbp",
1086  vxm->vtep6 = hash_create_mem (0, sizeof (ip6_address_t), sizeof (uword));
1087  vxm->mcast_shared = hash_create_mem (0,
1088  sizeof (ip46_address_t),
1089  sizeof (mcast_shared_t));
1090 
1091  udp_register_dst_port (vm, UDP_DST_PORT_vxlan_gbp,
1092  vxlan4_gbp_input_node.index, /* is_ip4 */ 1);
1093  udp_register_dst_port (vm, UDP_DST_PORT_vxlan6_gbp,
1094  vxlan6_gbp_input_node.index, /* is_ip4 */ 0);
1095 
1097 
1098  return 0;
1099 }
1100 
1102 
1103 /*
1104  * fd.io coding-style-patch-verification: ON
1105  *
1106  * Local Variables:
1107  * eval: (c-set-style "gnu")
1108  * End:
1109  */
#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
static void mcast_shared_add(ip46_address_t *dst, fib_node_index_t mfei, adj_index_t ai)
Definition: vxlan_gbp.c:334
Recursive resolution source.
Definition: fib_entry.h:125
#define VXLAN_GBP_HASH_MEMORY_SIZE
Definition: vxlan_gbp.c:1069
Contribute an object that is to be used to forward IP6 packets.
Definition: fib_types.h:113
#define hash_set(h, key, value)
Definition: hash.h:255
l2_input_config_t * configs
Definition: l2_input.h:61
vl_api_address_t src
Definition: vxlan_gbp.api:33
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:840
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:152
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:469
#define hash_unset(h, key)
Definition: hash.h:261
static bool vxlan_gbp_decap_next_is_valid(vxlan_gbp_main_t *vxm, u32 is_ip6, u32 decap_next_index)
Definition: vxlan_gbp.c:271
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:470
ip4_address_t src_address
Definition: ip4_packet.h:169
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
void fib_node_init(fib_node_t *node, fib_node_type_t type)
Definition: fib_node.c:185
u64 as_u64
Definition: bihash_doc.h:63
u32 fib_entry_child_add(fib_node_index_t fib_entry_index, fib_node_type_t child_type, fib_node_index_t child_index)
Definition: fib_entry.c:527
clib_error_t * vxlan_gbp_init(vlib_main_t *vm)
Definition: vxlan_gbp.c:1072
unsigned long u64
Definition: types.h:89
#define NULL
Definition: clib.h:57
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
int vnet_vxlan_gbp_tunnel_add_del(vnet_vxlan_gbp_tunnel_add_del_args_t *a, u32 *sw_if_indexp)
Definition: vxlan_gbp.c:356
static void mcast_shared_remove(ip46_address_t *dst)
Definition: vxlan_gbp.c:345
#define vnet_rewrite_set_data(rw, data, data_bytes)
Definition: rewrite.h:138
u32 mcast_sw_if_index
Definition: vxlan_gbp.api:35
vlib_node_registration_t vxlan4_gbp_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan4_gbp_encap_node)
Definition: encap.c:502
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:636
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 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:191
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:983
format_function_t format_ip46_address
Definition: format.h:61
Contribute an object that is to be used to forward IP4 packets.
Definition: fib_types.h:109
vxlan_gbp_main_t vxlan_gbp_main
Definition: vxlan_gbp.c:33
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:64
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:419
dpo_proto_t frp_proto
The protocol of the address below.
Definition: fib_types.h:475
unformat_function_t unformat_vnet_sw_interface
static u8 * format_vxlan_gbp_name(u8 *s, va_list *args)
Definition: vxlan_gbp.c:72
#define VNET_HW_INTERFACE_FLAG_LINK_UP
Definition: interface.h:494
vlib_node_registration_t vxlan6_gbp_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan6_gbp_encap_node)
Definition: encap.c:519
ip6_address_t src_address
Definition: ip6_packet.h:378
#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:1118
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:178
static uword vtep_addr_ref(ip46_address_t *ip)
Definition: vxlan_gbp.c:283
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:110
vnet_flood_class_t flood_class
Definition: interface.h:747
memset(h->entries, 0, sizeof(h->entries[0])*entries)
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:443
u32 frp_sw_if_index
The interface.
Definition: fib_types.h:505
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
u32 sw_if_index
Definition: vxlan_gbp.api:39
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
static void vxlan_gbp_tunnel_restack_dpo(vxlan_gbp_tunnel_t *t)
Definition: vxlan_gbp.c:126
ip4_address_t dst_address
Definition: ip4_packet.h:169
Aggregrate type for a prefix.
Definition: fib_types.h:203
#define clib_error_return(e, args...)
Definition: error.h:99
fib_node_index_t mfib_table_entry_path_update(u32 fib_index, const mfib_prefix_t *prefix, mfib_source_t source, const fib_route_path_t *rpath, mfib_itf_flags_t itf_flags)
Add n paths to an entry (aka route) in the FIB.
Definition: mfib_table.c:219
void adj_unlock(adj_index_t adj_index)
Release a reference counting lock on the adjacency.
Definition: adj.c:252
vlib_main_t * vlib_main
Definition: vxlan_gbp.h:166
unsigned int u32
Definition: types.h:88
static void vxlan_gbp_rewrite(vxlan_gbp_tunnel_t *t, bool is_ip6)
Definition: vxlan_gbp.c:220
u32 fib_table_find(fib_protocol_t proto, u32 table_id)
Get the index of the FIB for a Table-ID.
Definition: fib_table.c:1064
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:703
uword * mcast_shared
Definition: vxlan_gbp.h:160
Definition: fib_entry.h:275
unformat_function_t unformat_line_input
Definition: format.h:282
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
static vxlan_gbp_tunnel_t * vxlan_gbp_tunnel_from_fib_node(fib_node_t *node)
Definition: vxlan_gbp.c:154
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:464
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:172
static const dpo_id_t * load_balance_get_bucket_i(const load_balance_t *lb, u32 bucket)
Definition: load_balance.h:209
clib_bihash_16_8_t vxlan4_gbp_tunnel_by_key
Definition: vxlan_gbp.h:151
long ctx[MAX_CONNS]
Definition: main.c:144
dpo_id_t next_dpo
Definition: vxlan_gbp.h:68
struct _unformat_input_t unformat_input_t
u32 decap_next_index
Definition: vxlan_gbp.api:37
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:1012
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:625
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:274
u32 sibling_index
The tunnel is a child of the FIB entry for its destination.
Definition: vxlan_gbp.h:117
The FIB DPO provieds;.
Definition: load_balance.h:84
#define PREDICT_FALSE(x)
Definition: clib.h:107
vnet_sw_interface_flags_t flags
Definition: interface.h:720
fib_node_type_t fn_type
The node&#39;s type.
Definition: fib_node.h:293
An node in the FIB graph.
Definition: fib_node.h:289
fib_node_index_t fib_entry_index
Definition: vxlan_gbp.h:108
u8 * format_vxlan_gbp_tunnel(u8 *s, va_list *args)
Definition: vxlan_gbp.c:48
#define ip46_address_initializer
Definition: ip6_packet.h:96
u32 flags
Definition: vhost_user.h:115
#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 (general version).
Definition: pool.h:188
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
vlib_node_registration_t vxlan4_gbp_input_node
(constructor) VLIB_REGISTER_NODE (vxlan4_gbp_input_node)
Definition: decap.c:22
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
uword * instance_used
Definition: vxlan_gbp.h:170
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
vl_api_address_t dst
Definition: vxlan_gbp.api:34
vnet_flood_class_t
Definition: interface.h:662
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:277
vlib_node_registration_t vxlan6_gbp_input_node
(constructor) VLIB_REGISTER_NODE (vxlan6_gbp_input_node)
Definition: decap.c:23
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:167
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:177
void fib_prefix_from_ip46_addr(const ip46_address_t *addr, fib_prefix_t *pfx)
Host prefix from ip.
Definition: fib_types.c:80
static uword vtep_addr_unref(ip46_address_t *ip)
Definition: vxlan_gbp.c:297
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
static u8 * format_decap_next(u8 *s, va_list *args)
Definition: vxlan_gbp.c:36
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:1513
Context passed between object during a back walk.
Definition: fib_node.h:202
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:155
ip46_address_t dst
Definition: vxlan_gbp.h:81
#define ASSERT(truth)
static load_balance_t * load_balance_get(index_t lbi)
Definition: load_balance.h:200
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:312
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:911
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:567
dpo_proto_t fib_proto_to_dpo(fib_protocol_t fib_proto)
Definition: fib_types.c:237
#define foreach_copy_field
Definition: vxlan_gbp.c:211
fib_node_t node
Linkage into the FIB object graph.
Definition: vxlan_gbp.h:102
unformat_function_t unformat_ip46_address
Definition: format.h:65
ip46_address_t src
Definition: vxlan_gbp.h:80
static clib_error_t * vxlan_gbp_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: vxlan_gbp.c:90
void vnet_delete_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
Definition: interface.c:913
#define unformat_parse_error(input)
Definition: format.h:268
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:365
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
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:657
A for-us/local path.
Definition: fib_types.h:332
#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:955
static fib_protocol_t fib_ip_proto(bool is_ip6)
Convert from boolean is_ip6 to FIB protocol.
Definition: fib_types.h:80
u64 uword
Definition: types.h:112
static void unformat_free(unformat_input_t *i)
Definition: format.h:162
static void hash_set_mem_alloc(uword **h, void *key, uword v)
Definition: hash.h:279
u32 vni
Definition: vxlan_gbp.api:38
#define DPO_INVALID
An initialiser for DPOs declared on the stack.
Definition: dpo.h:195
vxlan_gbp_tunnel_t * tunnels
Definition: vxlan_gbp.h:148
unformat_function_t unformat_vlib_node
Definition: node_funcs.h:1173
#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:276
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
adj_index_t adj_mcast_add_or_lock(fib_protocol_t proto, vnet_link_t link_type, u32 sw_if_index)
Mcast Adjacency.
Definition: adj_mcast.c:51
void dpo_reset(dpo_id_t *dpo)
reset a DPO ID The DPO will be unlocked.
Definition: dpo.c:231
vnet_link_t fib_proto_to_link(fib_protocol_t proto)
Convert from a protocol to a link type.
Definition: fib_types.c:271
clib_error_t * vnet_sw_interface_set_flags(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: interface.c:477
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
u8 ip_version_and_header_length
Definition: ip4_packet.h:137
#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:725
static u16 ip4_header_checksum(ip4_header_t *i)
Definition: ip4_packet.h:246
void vnet_int_vxlan_gbp_bypass_mode(u32 sw_if_index, u8 is_ip6, u8 is_enable)
Definition: vxlan_gbp.c:899
const ip46_address_t zero_addr
Definition: lookup.c:318
#define VXLAN_GBP_HASH_NUM_BUCKETS
Definition: vxlan_gbp.c:1068
u32 * tunnel_index_by_sw_if_index
Definition: vxlan_gbp.h:163
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
int vnet_feature_enable_disable(const char *arc_name, const char *node_name, u32 sw_if_index, int enable_disable, void *feature_config, u32 n_feature_config_bytes)
Definition: feature.c:233
ip6_address_t dst_address
Definition: ip6_packet.h:378
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:170
vnet_main_t * vnet_main
Definition: vxlan_gbp.h:167
u8 * format_vxlan_gbp_encap_trace(u8 *s, va_list *args)
Definition: encap.c:56
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128