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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  */
32 
34 
35 u8 *
36 format_vxlan_gbp_tunnel_mode (u8 * s, va_list * args)
37 {
39 
40  switch (mode)
41  {
43  s = format (s, "L2");
44  break;
46  s = format (s, "L3");
47  break;
48  }
49  return (s);
50 }
51 
52 u8 *
53 format_vxlan_gbp_tunnel (u8 * s, va_list * args)
54 {
55  vxlan_gbp_tunnel_t *t = va_arg (*args, vxlan_gbp_tunnel_t *);
56 
57  s = format (s,
58  "[%d] instance %d src %U dst %U vni %d fib-idx %d"
59  " sw-if-idx %d mode %U ",
63  t->vni, t->encap_fib_index, t->sw_if_index,
65 
66  s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index);
67 
69  s = format (s, "mcast-sw-if-idx %d ", t->mcast_sw_if_index);
70 
71  return s;
72 }
73 
74 static u8 *
75 format_vxlan_gbp_name (u8 * s, va_list * args)
76 {
77  u32 dev_instance = va_arg (*args, u32);
80 
81  if (dev_instance == ~0)
82  return format (s, "<cached-unused>");
83 
84  if (dev_instance >= vec_len (vxm->tunnels))
85  return format (s, "<improperly-referenced>");
86 
87  t = pool_elt_at_index (vxm->tunnels, dev_instance);
88 
89  return format (s, "vxlan_gbp_tunnel%d", t->user_instance);
90 }
91 
92 static clib_error_t *
94  u32 flags)
95 {
96  u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
98  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
99 
100  return /* no error */ 0;
101 }
102 
103 /* *INDENT-OFF* */
104 VNET_DEVICE_CLASS (vxlan_gbp_device_class, static) = {
105  .name = "VXLAN-GBP",
106  .format_device_name = format_vxlan_gbp_name,
107  .format_tx_trace = format_vxlan_gbp_encap_trace,
108  .admin_up_down_function = vxlan_gbp_interface_admin_up_down,
109 };
110 /* *INDENT-ON* */
111 
112 static u8 *
114 {
115  u32 dev_instance = va_arg (*args, u32);
116  s = format (s, "unimplemented dev %u", dev_instance);
117  return s;
118 }
119 
120 /* *INDENT-OFF* */
121 VNET_HW_INTERFACE_CLASS (vxlan_gbp_hw_class) = {
122  .name = "VXLAN-GBP",
123  .format_header = format_vxlan_gbp_header_with_length,
124  .build_rewrite = default_build_rewrite,
125 };
126 /* *INDENT-ON* */
127 
128 static void
130 {
131  u8 is_ip4 = ip46_address_is_ip4 (&t->dst);
132  dpo_id_t dpo = DPO_INVALID;
133  fib_forward_chain_type_t forw_type = is_ip4 ?
135 
136  fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
137 
138  /* vxlan_gbp uses the payload hash as the udp source port
139  * hence the packet's hash is unknown
140  * skip single bucket load balance dpo's */
141  while (DPO_LOAD_BALANCE == dpo.dpoi_type)
142  {
144  if (lb->lb_n_buckets > 1)
145  break;
146 
147  dpo_copy (&dpo, load_balance_get_bucket_i (lb, 0));
148  }
149 
150  u32 encap_index = is_ip4 ?
152  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
153  dpo_reset (&dpo);
154 }
155 
156 static vxlan_gbp_tunnel_t *
158 {
160  return ((vxlan_gbp_tunnel_t *) (((char *) node) -
162  node)));
163 }
164 
165 /**
166  * Function definition to backwalk a FIB node -
167  * Here we will restack the new dpo of VXLAN DIP to encap node.
168  */
171 {
174 }
175 
176 /**
177  * Function definition to get a FIB node from its index
178  */
179 static fib_node_t *
181 {
184 
185  t = pool_elt_at_index (vxm->tunnels, index);
186 
187  return (&t->node);
188 }
189 
190 /**
191  * Function definition to inform the FIB node that its last lock has gone.
192  */
193 static void
195 {
196  /*
197  * The VXLAN GBP tunnel is a root of the graph. As such
198  * it never has children and thus is never locked.
199  */
200  ASSERT (0);
201 }
202 
203 /*
204  * Virtual function table registered by VXLAN GBP tunnels
205  * for participation in the FIB object graph.
206  */
207 const static fib_node_vft_t vxlan_gbp_vft = {
209  .fnv_last_lock = vxlan_gbp_tunnel_last_lock_gone,
210  .fnv_back_walk = vxlan_gbp_tunnel_back_walk,
211 };
212 
213 
214 #define foreach_copy_field \
215 _(vni) \
216 _(mode) \
217 _(mcast_sw_if_index) \
218 _(encap_fib_index) \
219 _(src) \
220 _(dst)
221 
222 static void
224 {
225  union
226  {
227  ip4_vxlan_gbp_header_t h4;
228  ip6_vxlan_gbp_header_t h6;
229  } h;
230  int len = is_ip6 ? sizeof h.h6 : sizeof h.h4;
231 
232  udp_header_t *udp;
233  vxlan_gbp_header_t *vxlan_gbp;
234  /* Fixed portion of the (outer) ip header */
235 
236  clib_memset (&h, 0, sizeof (h));
237  if (!is_ip6)
238  {
239  ip4_header_t *ip = &h.h4.ip4;
240  udp = &h.h4.udp, vxlan_gbp = &h.h4.vxlan_gbp;
241  ip->ip_version_and_header_length = 0x45;
242  ip->ttl = 254;
243  ip->protocol = IP_PROTOCOL_UDP;
244 
245  ip->src_address = t->src.ip4;
246  ip->dst_address = t->dst.ip4;
247 
248  /* we fix up the ip4 header length and checksum after-the-fact */
249  ip->checksum = ip4_header_checksum (ip);
250  }
251  else
252  {
253  ip6_header_t *ip = &h.h6.ip6;
254  udp = &h.h6.udp, vxlan_gbp = &h.h6.vxlan_gbp;
256  clib_host_to_net_u32 (6 << 28);
257  ip->hop_limit = 255;
258  ip->protocol = IP_PROTOCOL_UDP;
259 
260  ip->src_address = t->src.ip6;
261  ip->dst_address = t->dst.ip6;
262  }
263 
264  /* UDP header, randomize src port on something, maybe? */
265  udp->src_port = clib_host_to_net_u16 (47789);
266  udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_vxlan_gbp);
267 
268  /* VXLAN header */
269  vxlan_gbp_set_header (vxlan_gbp, t->vni);
270  vnet_rewrite_set_data (*t, &h, len);
271 }
272 
273 static uword
274 vtep_addr_ref (ip46_address_t * ip)
275 {
276  uword *vtep = ip46_address_is_ip4 (ip) ?
277  hash_get (vxlan_gbp_main.vtep4, ip->ip4.as_u32) :
278  hash_get_mem (vxlan_gbp_main.vtep6, &ip->ip6);
279  if (vtep)
280  return ++(*vtep);
281  ip46_address_is_ip4 (ip) ?
282  hash_set (vxlan_gbp_main.vtep4, ip->ip4.as_u32, 1) :
283  hash_set_mem_alloc (&vxlan_gbp_main.vtep6, &ip->ip6, 1);
284  return 1;
285 }
286 
287 static uword
288 vtep_addr_unref (ip46_address_t * ip)
289 {
290  uword *vtep = ip46_address_is_ip4 (ip) ?
291  hash_get (vxlan_gbp_main.vtep4, ip->ip4.as_u32) :
292  hash_get_mem (vxlan_gbp_main.vtep6, &ip->ip6);
293  ASSERT (vtep);
294  if (--(*vtep) != 0)
295  return *vtep;
296  ip46_address_is_ip4 (ip) ?
297  hash_unset (vxlan_gbp_main.vtep4, ip->ip4.as_u32) :
298  hash_unset_mem_free (&vxlan_gbp_main.vtep6, &ip->ip6);
299  return 0;
300 }
301 
302 /* *INDENT-OFF* */
303 typedef CLIB_PACKED(union
304 {
305  struct
306  {
307  fib_node_index_t mfib_entry_index;
308  adj_index_t mcast_adj_index;
309  };
310  u64 as_u64;
311 }) mcast_shared_t;
312 /* *INDENT-ON* */
313 
314 static inline mcast_shared_t
315 mcast_shared_get (ip46_address_t * ip)
316 {
318  uword *p = hash_get_mem (vxlan_gbp_main.mcast_shared, ip);
319  ASSERT (p);
320  mcast_shared_t ret = {.as_u64 = *p };
321  return ret;
322 }
323 
324 static inline void
325 mcast_shared_add (ip46_address_t * dst, fib_node_index_t mfei, adj_index_t ai)
326 {
327  mcast_shared_t new_ep = {
328  .mcast_adj_index = ai,
329  .mfib_entry_index = mfei,
330  };
331 
332  hash_set_mem_alloc (&vxlan_gbp_main.mcast_shared, dst, new_ep.as_u64);
333 }
334 
335 static inline void
336 mcast_shared_remove (ip46_address_t * dst)
337 {
338  mcast_shared_t ep = mcast_shared_get (dst);
339 
340  adj_unlock (ep.mcast_adj_index);
342 
343  hash_unset_mem_free (&vxlan_gbp_main.mcast_shared, dst);
344 }
345 
346 inline void
348 {
350 
351  if (vxm->udp_ports_registered == 0)
352  {
353  udp_register_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan_gbp,
354  vxlan4_gbp_input_node.index, /* is_ip4 */ 1);
355  udp_register_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan6_gbp,
356  vxlan6_gbp_input_node.index, /* is_ip4 */ 0);
357  }
358  /*
359  * Counts the number of vxlan_gbp tunnels
360  */
361  vxm->udp_ports_registered += 1;
362 }
363 
364 inline void
366 {
368 
369  ASSERT (vxm->udp_ports_registered != 0);
370 
371  if (vxm->udp_ports_registered == 1)
372  {
373  udp_unregister_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan_gbp,
374  /* is_ip4 */ 1);
375  udp_unregister_dst_port (vxm->vlib_main, UDP_DST_PORT_vxlan6_gbp,
376  /* is_ip4 */ 0);
377  }
378 
379  vxm->udp_ports_registered -= 1;
380 }
381 
384 {
386  vxlan_gbp_tunnel_t *t = 0;
387  vnet_main_t *vnm = vxm->vnet_main;
388  u64 *p;
389  u32 sw_if_index = ~0;
392  u32 is_ip6 = a->is_ip6;
393 
394  int not_found;
395  if (!is_ip6)
396  {
397  key4.key[0] = ip46_address_is_multicast (&a->dst) ?
398  a->dst.ip4.as_u32 :
399  a->dst.ip4.as_u32 | (((u64) a->src.ip4.as_u32) << 32);
400  key4.key[1] = (((u64) a->encap_fib_index) << 32)
401  | clib_host_to_net_u32 (a->vni << 8);
402  not_found =
403  clib_bihash_search_inline_16_8 (&vxm->vxlan4_gbp_tunnel_by_key,
404  &key4);
405  p = &key4.value;
406  }
407  else
408  {
409  key6.key[0] = a->dst.ip6.as_u64[0];
410  key6.key[1] = a->dst.ip6.as_u64[1];
411  key6.key[2] = (((u64) a->encap_fib_index) << 32)
412  | clib_host_to_net_u32 (a->vni << 8);
413  not_found =
414  clib_bihash_search_inline_24_8 (&vxm->vxlan6_gbp_tunnel_by_key,
415  &key6);
416  p = &key6.value;
417  }
418 
419  if (not_found)
420  p = 0;
421 
422  if (a->is_add)
423  {
424  l2input_main_t *l2im = &l2input_main;
425  u32 dev_instance; /* real dev instance tunnel index */
426  u32 user_instance; /* request and actual instance number */
427 
428  /* adding a tunnel: tunnel must not already exist */
429  if (p)
430  {
431  t = pool_elt_at_index (vxm->tunnels, *p);
432  *sw_if_indexp = t->sw_if_index;
433  return VNET_API_ERROR_TUNNEL_EXIST;
434  }
436  clib_memset (t, 0, sizeof (*t));
437  dev_instance = t - vxm->tunnels;
438 
439  /* copy from arg structure */
440 #define _(x) t->x = a->x;
442 #undef _
443 
444  vxlan_gbp_rewrite (t, is_ip6);
445  /*
446  * Reconcile the real dev_instance and a possible requested instance.
447  */
448  user_instance = a->instance;
449  if (user_instance == ~0)
450  user_instance = dev_instance;
451  if (hash_get (vxm->instance_used, user_instance))
452  {
453  pool_put (vxm->tunnels, t);
454  return VNET_API_ERROR_INSTANCE_IN_USE;
455  }
456  hash_set (vxm->instance_used, user_instance, 1);
457 
458  t->dev_instance = dev_instance; /* actual */
459  t->user_instance = user_instance; /* name */
460 
461  /* copy the key */
462  int add_failed;
463  if (is_ip6)
464  {
465  key6.value = (u64) dev_instance;
466  add_failed =
467  clib_bihash_add_del_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, &key6,
468  1 /*add */ );
469  }
470  else
471  {
472  key4.value = (u64) dev_instance;
473  add_failed =
474  clib_bihash_add_del_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, &key4,
475  1 /*add */ );
476  }
477 
478  if (add_failed)
479  {
480  pool_put (vxm->tunnels, t);
481  return VNET_API_ERROR_INVALID_REGISTRATION;
482  }
483 
485 
487  (vnm, vxlan_gbp_device_class.index, dev_instance,
488  vxlan_gbp_hw_class.index, dev_instance);
490 
491  /* Set vxlan_gbp tunnel output node */
492  u32 encap_index = !is_ip6 ?
494  vnet_set_interface_output_node (vnm, t->hw_if_index, encap_index);
495 
496  t->sw_if_index = sw_if_index = hi->sw_if_index;
497 
498  if (VXLAN_GBP_TUNNEL_MODE_L3 == t->mode)
499  {
502  }
503 
505  ~0);
506  vxm->tunnel_index_by_sw_if_index[sw_if_index] = dev_instance;
507 
508  /* setup l2 input config with l2 feature and bd 0 to drop packet */
509  vec_validate (l2im->configs, sw_if_index);
510  l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
511  l2im->configs[sw_if_index].bd_index = 0;
512 
513  vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
515  vnet_sw_interface_set_flags (vnm, sw_if_index,
517 
519  fib_prefix_t tun_dst_pfx;
521 
522  fib_prefix_from_ip46_addr (&t->dst, &tun_dst_pfx);
523  if (!ip46_address_is_multicast (&t->dst))
524  {
525  /* Unicast tunnel -
526  * source the FIB entry for the tunnel's destination
527  * and become a child thereof. The tunnel will then get poked
528  * when the forwarding for the entry updates, and the tunnel can
529  * re-stack accordingly
530  */
531  vtep_addr_ref (&t->src);
533  (t->encap_fib_index, &tun_dst_pfx, FIB_SOURCE_RR,
537  dev_instance);
539  }
540  else
541  {
542  /* Multicast tunnel -
543  * as the same mcast group can be used for multiple mcast tunnels
544  * with different VNIs, create the output fib adjacency only if
545  * it does not already exist
546  */
547  fib_protocol_t fp = fib_ip_proto (is_ip6);
548 
549  if (vtep_addr_ref (&t->dst) == 1)
550  {
551  fib_node_index_t mfei;
552  adj_index_t ai;
553  fib_route_path_t path = {
554  .frp_proto = fib_proto_to_dpo (fp),
555  .frp_addr = zero_addr,
556  .frp_sw_if_index = 0xffffffff,
557  .frp_fib_index = ~0,
558  .frp_weight = 0,
559  .frp_flags = FIB_ROUTE_PATH_LOCAL,
560  };
561  const mfib_prefix_t mpfx = {
562  .fp_proto = fp,
563  .fp_len = (is_ip6 ? 128 : 32),
564  .fp_grp_addr = tun_dst_pfx.fp_addr,
565  };
566 
567  /*
568  * Setup the (*,G) to receive traffic on the mcast group
569  * - the forwarding interface is for-us
570  * - the accepting interface is that from the API
571  */
573  &mpfx,
575  &path, MFIB_ITF_FLAG_FORWARD);
576 
580  &mpfx,
582  &path,
584 
585  /*
586  * Create the mcast adjacency to send traffic to the group
587  */
588  ai = adj_mcast_add_or_lock (fp,
589  fib_proto_to_link (fp),
590  a->mcast_sw_if_index);
591 
592  /*
593  * create a new end-point
594  */
595  mcast_shared_add (&t->dst, mfei, ai);
596  }
597 
598  dpo_id_t dpo = DPO_INVALID;
599  mcast_shared_t ep = mcast_shared_get (&t->dst);
600 
601  /* Stack shared mcast dst mac addr rewrite on encap */
603  fib_proto_to_dpo (fp), ep.mcast_adj_index);
604 
605  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
606  dpo_reset (&dpo);
607  flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
608  }
609 
610  vnet_get_sw_interface (vnet_get_main (), sw_if_index)->flood_class =
611  flood_class;
612  }
613  else
614  {
615  /* deleting a tunnel: tunnel must exist */
616  if (!p)
617  return VNET_API_ERROR_NO_SUCH_ENTRY;
618 
619  u32 instance = p[0];
620  t = pool_elt_at_index (vxm->tunnels, instance);
621 
622  sw_if_index = t->sw_if_index;
623  vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
624 
625  if (VXLAN_GBP_TUNNEL_MODE_L3 == t->mode)
626  {
629  }
630 
632 
633  if (!is_ip6)
634  clib_bihash_add_del_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, &key4,
635  0 /*del */ );
636  else
637  clib_bihash_add_del_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, &key6,
638  0 /*del */ );
639 
640  if (!ip46_address_is_multicast (&t->dst))
641  {
642  vtep_addr_unref (&t->src);
645  }
646  else if (vtep_addr_unref (&t->dst) == 0)
647  {
648  mcast_shared_remove (&t->dst);
649  }
650 
654 
655  fib_node_deinit (&t->node);
656  pool_put (vxm->tunnels, t);
657  }
658 
659  if (sw_if_indexp)
660  *sw_if_indexp = sw_if_index;
661 
662  return 0;
663 }
664 
665 int
667 {
669  vxlan_gbp_tunnel_t *t = 0;
670  u32 ti;
671 
672  if (sw_if_index >= vec_len (vxm->tunnel_index_by_sw_if_index))
673  return VNET_API_ERROR_NO_SUCH_ENTRY;
674 
676  if (~0 != ti)
677  {
678  t = pool_elt_at_index (vxm->tunnels, ti);
679 
681  .is_add = 0,
682  .is_ip6 = !ip46_address_is_ip4 (&t->src),
683  .vni = t->vni,
684  .src = t->src,
685  .dst = t->dst,
686  .instance = ~0,
687  };
688 
689  return (vnet_vxlan_gbp_tunnel_add_del (&args, NULL));
690  }
691 
692  return VNET_API_ERROR_NO_SUCH_ENTRY;
693 }
694 
695 static uword
696 get_decap_next_for_node (u32 node_index, u32 ipv4_set)
697 {
699  vlib_main_t *vm = vxm->vlib_main;
700  uword input_node = (ipv4_set) ? vxlan4_gbp_input_node.index :
701  vxlan6_gbp_input_node.index;
702 
703  return vlib_node_add_next (vm, input_node, node_index);
704 }
705 
706 static uword
707 unformat_decap_next (unformat_input_t * input, va_list * args)
708 {
709  u32 *result = va_arg (*args, u32 *);
710  u32 ipv4_set = va_arg (*args, int);
712  vlib_main_t *vm = vxm->vlib_main;
713  u32 node_index;
714  u32 tmp;
715 
716  if (unformat (input, "l2"))
717  *result = VXLAN_GBP_INPUT_NEXT_L2_INPUT;
718  else if (unformat (input, "node %U", unformat_vlib_node, vm, &node_index))
719  *result = get_decap_next_for_node (node_index, ipv4_set);
720  else if (unformat (input, "%d", &tmp))
721  *result = tmp;
722  else
723  return 0;
724  return 1;
725 }
726 
727 static clib_error_t *
729  unformat_input_t * input,
730  vlib_cli_command_t * cmd)
731 {
732  unformat_input_t _line_input, *line_input = &_line_input;
733  ip46_address_t src = ip46_address_initializer, dst =
736  u8 is_add = 1;
737  u8 src_set = 0;
738  u8 dst_set = 0;
739  u8 grp_set = 0;
740  u8 ipv4_set = 0;
741  u8 ipv6_set = 0;
742  u32 instance = ~0;
743  u32 encap_fib_index = 0;
744  u32 mcast_sw_if_index = ~0;
745  u32 decap_next_index = VXLAN_GBP_INPUT_NEXT_L2_INPUT;
746  u32 vni = 0;
747  u32 table_id;
748  clib_error_t *parse_error = NULL;
749 
750  /* Get a line of input. */
751  if (!unformat_user (input, unformat_line_input, line_input))
752  return 0;
753 
754  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
755  {
756  if (unformat (line_input, "del"))
757  {
758  is_add = 0;
759  }
760  else if (unformat (line_input, "instance %d", &instance))
761  ;
762  else if (unformat (line_input, "src %U",
764  {
765  src_set = 1;
766  ip46_address_is_ip4 (&src) ? (ipv4_set = 1) : (ipv6_set = 1);
767  }
768  else if (unformat (line_input, "dst %U",
770  {
771  dst_set = 1;
772  ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1);
773  }
774  else if (unformat (line_input, "group %U %U",
777  vnet_get_main (), &mcast_sw_if_index))
778  {
779  grp_set = dst_set = 1;
780  ip46_address_is_ip4 (&dst) ? (ipv4_set = 1) : (ipv6_set = 1);
781  }
782  else if (unformat (line_input, "encap-vrf-id %d", &table_id))
783  {
784  encap_fib_index =
785  fib_table_find (fib_ip_proto (ipv6_set), table_id);
786  }
787  else if (unformat (line_input, "decap-next %U", unformat_decap_next,
788  &decap_next_index, ipv4_set))
789  ;
790  else if (unformat (line_input, "vni %d", &vni))
791  ;
792  else
793  {
794  parse_error = clib_error_return (0, "parse error: '%U'",
795  format_unformat_error, line_input);
796  break;
797  }
798  }
799 
800  unformat_free (line_input);
801 
802  if (parse_error)
803  return parse_error;
804 
805  if (encap_fib_index == ~0)
806  return clib_error_return (0, "nonexistent encap-vrf-id %d", table_id);
807 
808  if (src_set == 0)
809  return clib_error_return (0, "tunnel src address not specified");
810 
811  if (dst_set == 0)
812  return clib_error_return (0, "tunnel dst address not specified");
813 
814  if (grp_set && !ip46_address_is_multicast (&dst))
815  return clib_error_return (0, "tunnel group address not multicast");
816 
817  if (grp_set == 0 && ip46_address_is_multicast (&dst))
818  return clib_error_return (0, "dst address must be unicast");
819 
820  if (grp_set && mcast_sw_if_index == ~0)
821  return clib_error_return (0, "tunnel nonexistent multicast device");
822 
823  if (ipv4_set && ipv6_set)
824  return clib_error_return (0, "both IPv4 and IPv6 addresses specified");
825 
826  if (ip46_address_cmp (&src, &dst) == 0)
827  return clib_error_return (0, "src and dst addresses are identical");
828 
829  if (decap_next_index == ~0)
830  return clib_error_return (0, "next node not found");
831 
832  if (vni == 0)
833  return clib_error_return (0, "vni not specified");
834 
835  if (vni >> 24)
836  return clib_error_return (0, "vni %d out of range", vni);
837 
839  .is_add = is_add,
840  .is_ip6 = ipv6_set,
841  .instance = instance,
842 #define _(x) .x = x,
844 #undef _
845  };
846 
847  u32 tunnel_sw_if_index;
848  int rv = vnet_vxlan_gbp_tunnel_add_del (&a, &tunnel_sw_if_index);
849 
850  switch (rv)
851  {
852  case 0:
853  if (is_add)
855  vnet_get_main (), tunnel_sw_if_index);
856  break;
857 
858  case VNET_API_ERROR_TUNNEL_EXIST:
859  return clib_error_return (0, "tunnel already exists...");
860 
861  case VNET_API_ERROR_NO_SUCH_ENTRY:
862  return clib_error_return (0, "tunnel does not exist...");
863 
864  case VNET_API_ERROR_INSTANCE_IN_USE:
865  return clib_error_return (0, "Instance is in use");
866 
867  default:
868  return clib_error_return
869  (0, "vnet_vxlan_gbp_tunnel_add_del returned %d", rv);
870  }
871 
872  return 0;
873 }
874 
875 /*?
876  * Add or delete a VXLAN Tunnel.
877  *
878  * VXLAN provides the features needed to allow L2 bridge domains (BDs)
879  * to span multiple servers. This is done by building an L2 overlay on
880  * top of an L3 network underlay using VXLAN tunnels.
881  *
882  * This makes it possible for servers to be co-located in the same data
883  * center or be separated geographically as long as they are reachable
884  * through the underlay L3 network.
885  *
886  * You can refer to this kind of L2 overlay bridge domain as a VXLAN
887  * (Virtual eXtensible VLAN) segment.
888  *
889  * @cliexpar
890  * Example of how to create a VXLAN Tunnel:
891  * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 encap-vrf-id 7}
892  * Example of how to create a VXLAN Tunnel with a known name, vxlan_gbp_tunnel42:
893  * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 dst 10.0.3.3 instance 42}
894  * Example of how to create a multicast VXLAN Tunnel with a known name, vxlan_gbp_tunnel23:
895  * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 group 239.1.1.1 GigabitEthernet0/8/0 instance 23}
896  * Example of how to delete a VXLAN Tunnel:
897  * @cliexcmd{create vxlan_gbp tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 del}
898  ?*/
899 /* *INDENT-OFF* */
900 VLIB_CLI_COMMAND (create_vxlan_gbp_tunnel_command, static) = {
901  .path = "create vxlan-gbp tunnel",
902  .short_help =
903  "create vxlan-gbp tunnel src <local-vtep-addr>"
904  " {dst <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>"
905  " [instance <id>]"
906  " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [del]",
908 };
909 /* *INDENT-ON* */
910 
911 static clib_error_t *
913  unformat_input_t * input,
914  vlib_cli_command_t * cmd)
915 {
918  int raw = 0;
919 
921  {
922  if (unformat (input, "raw"))
923  raw = 1;
924  else
925  return clib_error_return (0, "parse error: '%U'",
926  format_unformat_error, input);
927  }
928 
929  if (pool_elts (vxm->tunnels) == 0)
930  vlib_cli_output (vm, "No vxlan-gbp tunnels configured...");
931 
932 /* *INDENT-OFF* */
933  pool_foreach (t, vxm->tunnels,
934  ({
935  vlib_cli_output (vm, "%U", format_vxlan_gbp_tunnel, t);
936  }));
937 /* *INDENT-ON* */
938 
939  if (raw)
940  {
941  vlib_cli_output (vm, "Raw IPv4 Hash Table:\n%U\n",
942  format_bihash_16_8, &vxm->vxlan4_gbp_tunnel_by_key,
943  1 /* verbose */ );
944  vlib_cli_output (vm, "Raw IPv6 Hash Table:\n%U\n",
945  format_bihash_24_8, &vxm->vxlan6_gbp_tunnel_by_key,
946  1 /* verbose */ );
947  }
948 
949  return 0;
950 }
951 
952 /*?
953  * Display all the VXLAN Tunnel entries.
954  *
955  * @cliexpar
956  * Example of how to display the VXLAN Tunnel entries:
957  * @cliexstart{show vxlan_gbp tunnel}
958  * [0] src 10.0.3.1 dst 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2
959  * @cliexend
960  ?*/
961 /* *INDENT-OFF* */
962 VLIB_CLI_COMMAND (show_vxlan_gbp_tunnel_command, static) = {
963  .path = "show vxlan-gbp tunnel",
964  .short_help = "show vxlan-gbp tunnel [raw]",
966 };
967 /* *INDENT-ON* */
968 
969 
970 void
972 {
973  if (is_ip6)
974  vnet_feature_enable_disable ("ip6-unicast", "ip6-vxlan-gbp-bypass",
975  sw_if_index, is_enable, 0, 0);
976  else
977  vnet_feature_enable_disable ("ip4-unicast", "ip4-vxlan-gbp-bypass",
978  sw_if_index, is_enable, 0, 0);
979 }
980 
981 
982 static clib_error_t *
984  unformat_input_t * input, vlib_cli_command_t * cmd)
985 {
986  unformat_input_t _line_input, *line_input = &_line_input;
987  vnet_main_t *vnm = vnet_get_main ();
988  clib_error_t *error = 0;
989  u32 sw_if_index, is_enable;
990 
991  sw_if_index = ~0;
992  is_enable = 1;
993 
994  if (!unformat_user (input, unformat_line_input, line_input))
995  return 0;
996 
997  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
998  {
999  if (unformat_user
1000  (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
1001  ;
1002  else if (unformat (line_input, "del"))
1003  is_enable = 0;
1004  else
1005  {
1006  error = unformat_parse_error (line_input);
1007  goto done;
1008  }
1009  }
1010 
1011  if (~0 == sw_if_index)
1012  {
1013  error = clib_error_return (0, "unknown interface `%U'",
1014  format_unformat_error, line_input);
1015  goto done;
1016  }
1017 
1018  vnet_int_vxlan_gbp_bypass_mode (sw_if_index, is_ip6, is_enable);
1019 
1020 done:
1021  unformat_free (line_input);
1022 
1023  return error;
1024 }
1025 
1026 static clib_error_t *
1028  unformat_input_t * input, vlib_cli_command_t * cmd)
1029 {
1030  return set_ip_vxlan_gbp_bypass (0, input, cmd);
1031 }
1032 
1033 /*?
1034  * This command adds the 'ip4-vxlan-gbp-bypass' graph node for a given interface.
1035  * By adding the IPv4 vxlan_gbp-bypass graph node to an interface, the node checks
1036  * for and validate input vxlan_gbp packet and bypass ip4-lookup, ip4-local,
1037  * ip4-udp-lookup nodes to speedup vxlan_gbp packet forwarding. This node will
1038  * cause extra overhead to for non-vxlan_gbp packets which is kept at a minimum.
1039  *
1040  * @cliexpar
1041  * @parblock
1042  * Example of graph node before ip4-vxlan_gbp-bypass is enabled:
1043  * @cliexstart{show vlib graph ip4-vxlan_gbp-bypass}
1044  * Name Next Previous
1045  * ip4-vxlan-gbp-bypass error-drop [0]
1046  * vxlan4-gbp-input [1]
1047  * ip4-lookup [2]
1048  * @cliexend
1049  *
1050  * Example of how to enable ip4-vxlan-gbp-bypass on an interface:
1051  * @cliexcmd{set interface ip vxlan-gbp-bypass GigabitEthernet2/0/0}
1052  *
1053  * Example of graph node after ip4-vxlan-gbp-bypass is enabled:
1054  * @cliexstart{show vlib graph ip4-vxlan-gbp-bypass}
1055  * Name Next Previous
1056  * ip4-vxlan-gbp-bypass error-drop [0] ip4-input
1057  * vxlan4-gbp-input [1] ip4-input-no-checksum
1058  * ip4-lookup [2]
1059  * @cliexend
1060  *
1061  * Example of how to display the feature enabled on an interface:
1062  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1063  * IP feature paths configured on GigabitEthernet2/0/0...
1064  * ...
1065  * ipv4 unicast:
1066  * ip4-vxlan-gbp-bypass
1067  * ip4-lookup
1068  * ...
1069  * @cliexend
1070  *
1071  * Example of how to disable ip4-vxlan-gbp-bypass on an interface:
1072  * @cliexcmd{set interface ip vxlan-gbp-bypass GigabitEthernet2/0/0 del}
1073  * @endparblock
1074 ?*/
1075 /* *INDENT-OFF* */
1076 VLIB_CLI_COMMAND (set_interface_ip_vxlan_gbp_bypass_command, static) = {
1077  .path = "set interface ip vxlan-gbp-bypass",
1078  .function = set_ip4_vxlan_gbp_bypass,
1079  .short_help = "set interface ip vxlan-gbp-bypass <interface> [del]",
1080 };
1081 /* *INDENT-ON* */
1082 
1083 static clib_error_t *
1085  unformat_input_t * input, vlib_cli_command_t * cmd)
1086 {
1087  return set_ip_vxlan_gbp_bypass (1, input, cmd);
1088 }
1089 
1090 /*?
1091  * This command adds the 'ip6-vxlan-gbp-bypass' graph node for a given interface.
1092  * By adding the IPv6 vxlan-gbp-bypass graph node to an interface, the node checks
1093  * for and validate input vxlan_gbp packet and bypass ip6-lookup, ip6-local,
1094  * ip6-udp-lookup nodes to speedup vxlan_gbp packet forwarding. This node will
1095  * cause extra overhead to for non-vxlan packets which is kept at a minimum.
1096  *
1097  * @cliexpar
1098  * @parblock
1099  * Example of graph node before ip6-vxlan-gbp-bypass is enabled:
1100  * @cliexstart{show vlib graph ip6-vxlan-gbp-bypass}
1101  * Name Next Previous
1102  * ip6-vxlan-gbp-bypass error-drop [0]
1103  * vxlan6-gbp-input [1]
1104  * ip6-lookup [2]
1105  * @cliexend
1106  *
1107  * Example of how to enable ip6-vxlan-gbp-bypass on an interface:
1108  * @cliexcmd{set interface ip6 vxlan-gbp-bypass GigabitEthernet2/0/0}
1109  *
1110  * Example of graph node after ip6-vxlan-gbp-bypass is enabled:
1111  * @cliexstart{show vlib graph ip6-vxlan-gbp-bypass}
1112  * Name Next Previous
1113  * ip6-vxlan-gbp-bypass error-drop [0] ip6-input
1114  * vxlan6-gbp-input [1] ip4-input-no-checksum
1115  * ip6-lookup [2]
1116  * @cliexend
1117  *
1118  * Example of how to display the feature enabled on an interface:
1119  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1120  * IP feature paths configured on GigabitEthernet2/0/0...
1121  * ...
1122  * ipv6 unicast:
1123  * ip6-vxlan-gbp-bypass
1124  * ip6-lookup
1125  * ...
1126  * @cliexend
1127  *
1128  * Example of how to disable ip6-vxlan-gbp-bypass on an interface:
1129  * @cliexcmd{set interface ip6 vxlan-gbp-bypass GigabitEthernet2/0/0 del}
1130  * @endparblock
1131 ?*/
1132 /* *INDENT-OFF* */
1133 VLIB_CLI_COMMAND (set_interface_ip6_vxlan_gbp_bypass_command, static) = {
1134  .path = "set interface ip6 vxlan-gbp-bypass",
1135  .function = set_ip6_vxlan_gbp_bypass,
1136  .short_help = "set interface ip vxlan-gbp-bypass <interface> [del]",
1137 };
1138 /* *INDENT-ON* */
1139 
1140 #define VXLAN_GBP_HASH_NUM_BUCKETS (2 * 1024)
1141 #define VXLAN_GBP_HASH_MEMORY_SIZE (1 << 20)
1142 
1143 clib_error_t *
1145 {
1147  clib_error_t *error;
1148 
1149  vxm->vnet_main = vnet_get_main ();
1150  vxm->vlib_main = vm;
1151 
1152  if ((error = vlib_call_init_function (vm, punt_init)))
1153  return (error);
1154 
1155  /* initialize the ip6 hash */
1156  clib_bihash_init_16_8 (&vxm->vxlan4_gbp_tunnel_by_key, "vxlan4-gbp",
1159  clib_bihash_init_24_8 (&vxm->vxlan6_gbp_tunnel_by_key, "vxlan6-gbp",
1162  vxm->vtep6 = hash_create_mem (0, sizeof (ip6_address_t), sizeof (uword));
1163  vxm->mcast_shared = hash_create_mem (0,
1164  sizeof (ip46_address_t),
1165  sizeof (mcast_shared_t));
1166 
1168 
1169  punt_hdl = vlib_punt_client_register ("vxlan-gbp");
1170 
1171  vlib_punt_reason_alloc (punt_hdl,
1172  "VXLAN-GBP-no-such-v4-tunnel",
1174  vlib_punt_reason_alloc (punt_hdl,
1175  "VXLAN-GBP-no-such-v6-tunnel",
1177 
1178  return (error);
1179 }
1180 
1182 
1183 /*
1184  * fd.io coding-style-patch-verification: ON
1185  *
1186  * Local Variables:
1187  * eval: (c-set-style "gnu")
1188  * End:
1189  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:439
u32 sw_if_index
Definition: ipsec_gre.api:37
void vnet_set_interface_output_node(vnet_main_t *vnm, u32 hw_if_index, u32 node_index)
Set interface output node - for interface registered without its output/tx nodes created because its ...
u16 lb_n_buckets
number of buckets in the load-balance.
Definition: load_balance.h:116
void dpo_stack_from_node(u32 child_node_index, dpo_id_t *dpo, const dpo_id_t *parent)
Stack one DPO object on another, and thus establish a child parent relationship.
Definition: dpo.c: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:325
Recursive resolution source.
Definition: fib_entry.h:125
#define VXLAN_GBP_HASH_MEMORY_SIZE
Definition: vxlan_gbp.c:1141
Contribute an object that is to be used to forward IP6 packets.
Definition: fib_types.h:113
#define hash_set(h, key, value)
Definition: hash.h:255
l2_input_config_t * configs
Definition: l2_input.h:61
u32 flags
Definition: vhost_user.h:115
static 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:912
static void vxlan_gbp_set_header(vxlan_gbp_header_t *h, u32 vni)
clib_bihash_24_8_t vxlan6_gbp_tunnel_by_key
Definition: vxlan_gbp.h:170
#define hash_unset(h, key)
Definition: hash.h:261
VNET_HW_INTERFACE_CLASS(vxlan_gbp_hw_class)
VNET_DEVICE_CLASS(vxlan_gbp_device_class, static)
A representation of a path as described by a route producer.
Definition: fib_types.h:470
ip4_address_t src_address
Definition: ip4_packet.h:170
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:555
clib_error_t * vxlan_gbp_init(vlib_main_t *vm)
Definition: vxlan_gbp.c:1144
unsigned long u64
Definition: types.h:89
static vlib_punt_hdl_t punt_hdl
Definition: vxlan_gbp.c:31
#define NULL
Definition: clib.h:58
enum fib_node_back_walk_rc_t_ fib_node_back_walk_rc_t
Return code from a back walk function.
void fib_entry_contribute_forwarding(fib_node_index_t fib_entry_index, fib_forward_chain_type_t fct, dpo_id_t *dpo)
Definition: fib_entry.c:447
int vnet_vxlan_gbp_tunnel_add_del(vnet_vxlan_gbp_tunnel_add_del_args_t *a, u32 *sw_if_indexp)
Definition: vxlan_gbp.c:383
static void mcast_shared_remove(ip46_address_t *dst)
Definition: vxlan_gbp.c:336
#define vnet_rewrite_set_data(rw, data, data_bytes)
Definition: rewrite.h:138
u32 mcast_sw_if_index
Definition: vxlan_gbp.api:40
vlib_node_registration_t vxlan4_gbp_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan4_gbp_encap_node)
Definition: encap.c:501
void vxlan_gbp_unregister_udp_ports(void)
Definition: vxlan_gbp.c:365
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:707
void fib_entry_child_remove(fib_node_index_t fib_entry_index, u32 sibling_index)
Definition: fib_entry.c:566
void dpo_copy(dpo_id_t *dst, const dpo_id_t *src)
atomic copy a data-plane object.
Definition: dpo.c:261
enum vxlan_gbp_tunnel_mode_t_ vxlan_gbp_tunnel_mode_t
int vlib_punt_hdl_t
Typedef for a client handle.
Definition: punt.h:40
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:194
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
clib_memset(h->entries, 0, sizeof(h->entries[0])*entries)
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:65
void fib_node_deinit(fib_node_t *node)
Definition: fib_node.c:197
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
dpo_proto_t frp_proto
The protocol of the address below.
Definition: fib_types.h:475
unformat_function_t unformat_vnet_sw_interface
static u8 * format_vxlan_gbp_name(u8 *s, va_list *args)
Definition: vxlan_gbp.c:75
int vlib_punt_reason_alloc(vlib_punt_hdl_t client, const char *reason_name, vlib_punt_reason_t *reason)
Allocate a new punt reason.
Definition: punt.c:370
vl_api_ip4_address_t dst
Definition: ipsec_gre.api:39
vlib_node_registration_t vxlan6_gbp_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan6_gbp_encap_node)
Definition: encap.c:515
ip6_address_t src_address
Definition: ip6_packet.h:385
#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:1122
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:274
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:113
vnet_flood_class_t flood_class
Definition: interface.h:709
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:493
u32 frp_sw_if_index
The interface.
Definition: fib_types.h:505
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
void mfib_table_entry_delete_index(fib_node_index_t mfib_entry_index, mfib_source_t source)
Delete a FIB entry.
Definition: mfib_table.c:464
static void vxlan_gbp_tunnel_restack_dpo(vxlan_gbp_tunnel_t *t)
Definition: vxlan_gbp.c:129
ip4_address_t dst_address
Definition: ip4_packet.h:170
Aggregrate type for a prefix.
Definition: fib_types.h:203
#define clib_error_return(e, args...)
Definition: error.h:99
fib_node_index_t mfib_table_entry_path_update(u32 fib_index, const mfib_prefix_t *prefix, mfib_source_t source, const fib_route_path_t *rpath, mfib_itf_flags_t itf_flags)
Add n paths to an entry (aka route) in the FIB.
Definition: mfib_table.c:290
void adj_unlock(adj_index_t adj_index)
Release a reference counting lock on the adjacency.
Definition: adj.c:318
vlib_main_t * vlib_main
Definition: vxlan_gbp.h:187
unsigned int u32
Definition: types.h:88
static void vxlan_gbp_rewrite(vxlan_gbp_tunnel_t *t, bool is_ip6)
Definition: vxlan_gbp.c:223
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
#define vlib_call_init_function(vm, x)
Definition: init.h:260
u32 vnet_register_interface(vnet_main_t *vnm, u32 dev_class_index, u32 dev_instance, u32 hw_class_index, u32 hw_instance)
Definition: interface.c:740
vlib_punt_hdl_t vlib_punt_client_register(const char *who)
Register a new clinet.
Definition: punt.c:140
uword * mcast_shared
Definition: vxlan_gbp.h:178
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:157
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:514
vlib_punt_reason_t punt_no_such_tunnel[FIB_PROTOCOL_IP_MAX]
Punt reasons for no such tunnel.
Definition: vxlan_gbp.h:196
void ip4_sw_interface_enable_disable(u32 sw_if_index, u32 is_enable)
Definition: ip4_forward.c:525
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:228
clib_bihash_16_8_t vxlan4_gbp_tunnel_by_key
Definition: vxlan_gbp.h:169
long ctx[MAX_CONNS]
Definition: main.c:144
dpo_id_t next_dpo
Definition: vxlan_gbp.h:76
struct _unformat_input_t unformat_input_t
static clib_error_t * set_ip6_vxlan_gbp_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan_gbp.c:1084
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:696
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:286
u32 sibling_index
The tunnel is a child of the FIB entry for its destination.
Definition: vxlan_gbp.h:125
The FIB DPO provieds;.
Definition: load_balance.h:106
#define PREDICT_FALSE(x)
Definition: clib.h:111
vnet_sw_interface_flags_t flags
Definition: interface.h:684
vl_api_ip4_address_t src
Definition: ipsec_gre.api:38
fib_node_type_t fn_type
The node&#39;s type.
Definition: fib_node.h:295
static clib_error_t * punt_init(vlib_main_t *vm)
Definition: punt.c:614
An node in the FIB graph.
Definition: fib_node.h:291
fib_node_index_t fib_entry_index
Definition: vxlan_gbp.h:116
u8 * format_vxlan_gbp_tunnel(u8 *s, va_list *args)
Definition: vxlan_gbp.c:53
#define ip46_address_initializer
Definition: ip6_packet.h:96
u8 len
Definition: ip_types.api:49
#define ip46_address_is_ip4(ip46)
Definition: ip6_packet.h:88
#define pool_get_aligned(P, E, A)
Allocate an object E from a pool P with alignment A.
Definition: pool.h:230
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:539
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
uword * instance_used
Definition: vxlan_gbp.h:191
vlib_main_t * vm
Definition: buffer.c:312
void fib_table_entry_delete_index(fib_node_index_t fib_entry_index, fib_source_t source)
Delete a FIB entry.
Definition: fib_table.c:877
u32 udp_ports_registered
Definition: vxlan_gbp.h:184
void udp_unregister_dst_port(vlib_main_t *vm, udp_dst_port_t dst_port, u8 is_ip4)
Definition: udp_local.c:522
vnet_flood_class_t
Definition: interface.h:625
fib_node_get_t fnv_get
Definition: fib_node.h:279
vlib_node_registration_t vxlan6_gbp_input_node
(constructor) VLIB_REGISTER_NODE (vxlan6_gbp_input_node)
Definition: decap.c:554
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:170
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:180
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:288
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
vl_api_vxlan_gbp_api_tunnel_mode_t mode
Definition: vxlan_gbp.api:44
Aggregrate type for a prefix.
Definition: mfib_types.h:24
u8 * default_build_rewrite(vnet_main_t *vnm, u32 sw_if_index, vnet_link_t link_type, const void *dst_address)
Return a complete, zero-length (aka dummy) rewrite.
Definition: interface.c:1556
void vxlan_gbp_register_udp_ports(void)
Definition: vxlan_gbp.c:347
Context passed between object during a back walk.
Definition: fib_node.h:204
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:155
ip46_address_t dst
Definition: vxlan_gbp.h:86
#define ASSERT(truth)
u8 is_add
Definition: ipsec_gre.api:36
static load_balance_t * load_balance_get(index_t lbi)
Definition: load_balance.h:219
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:303
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:983
enum fib_forward_chain_type_t_ fib_forward_chain_type_t
FIB output chain type.
fib_route_path_flags_t frp_flags
flags on the path
Definition: fib_types.h:571
int vnet_vxlan_gbp_tunnel_del(u32 sw_if_index)
Definition: vxlan_gbp.c:666
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:214
fib_node_t node
Linkage into the FIB object graph.
Definition: vxlan_gbp.h:110
unformat_function_t unformat_ip46_address
Definition: format.h:65
ip46_address_t src
Definition: vxlan_gbp.h:85
static clib_error_t * vxlan_gbp_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: vxlan_gbp.c:93
void vnet_delete_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
Definition: interface.c:951
#define unformat_parse_error(input)
Definition: format.h:268
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:372
fib_protocol_t fp_proto
protocol type
Definition: mfib_types.h:33
u8 * format_vxlan_gbp_tunnel_mode(u8 *s, va_list *args)
Definition: vxlan_gbp.c:36
l2input_main_t l2input_main
Definition: l2_input.c:128
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:728
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:1027
static fib_protocol_t fib_ip_proto(bool is_ip6)
Convert from boolean is_ip6 to FIB protocol.
Definition: fib_types.h:80
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, vnet_hw_interface_flags_t flags)
Definition: interface.c:504
u64 uword
Definition: types.h:112
static void unformat_free(unformat_input_t *i)
Definition: format.h:162
static void hash_set_mem_alloc(uword **h, void *key, uword v)
Definition: hash.h:279
u32 vni
Definition: vxlan_gbp.api:42
#define DPO_INVALID
An initialiser for DPOs declared on the stack.
Definition: dpo.h:195
vxlan_gbp_tunnel_t * tunnels
Definition: vxlan_gbp.h:166
unformat_function_t unformat_vlib_node
Definition: node_funcs.h:1177
#define hash_get_mem(h, key)
Definition: hash.h:269
static void hash_unset_mem_free(uword **h, void *key)
Definition: hash.h:295
A FIB graph nodes virtual function table.
Definition: fib_node.h:278
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
clib_error_t * vnet_sw_interface_set_flags(vnet_main_t *vnm, u32 sw_if_index, vnet_sw_interface_flags_t flags)
Definition: interface.c:513
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
void udp_register_dst_port(vlib_main_t *vm, udp_dst_port_t dst_port, u32 node_index, u8 is_ip4)
Definition: udp_local.c:484
u8 ip_version_and_header_length
Definition: ip4_packet.h:138
vxlan_gbp_tunnel_mode_t mode
Tunnel mode.
Definition: vxlan_gbp.h:105
#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:247
void ip6_sw_interface_enable_disable(u32 sw_if_index, u32 is_enable)
Definition: ip6_forward.c:146
void vnet_int_vxlan_gbp_bypass_mode(u32 sw_if_index, u8 is_ip6, u8 is_enable)
Definition: vxlan_gbp.c:971
const ip46_address_t zero_addr
Definition: lookup.c:319
#define VXLAN_GBP_HASH_NUM_BUCKETS
Definition: vxlan_gbp.c:1140
u32 * tunnel_index_by_sw_if_index
Definition: vxlan_gbp.h:181
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
int vnet_feature_enable_disable(const char *arc_name, const char *node_name, u32 sw_if_index, int enable_disable, void *feature_config, u32 n_feature_config_bytes)
Definition: feature.c:274
ip6_address_t dst_address
Definition: ip6_packet.h:385
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:170
vnet_main_t * vnet_main
Definition: vxlan_gbp.h:188
u8 * format_vxlan_gbp_encap_trace(u8 *s, va_list *args)
Definition: encap.c:58
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128