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Vector Packet Processing
vxlan.c
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1 /*
2  * Copyright (c) 2015 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 #include <vnet/vxlan/vxlan.h>
16 #include <vnet/ip/format.h>
17 #include <vnet/fib/fib_entry.h>
18 #include <vnet/fib/fib_table.h>
19 #include <vnet/mfib/mfib_table.h>
20 #include <vnet/adj/adj_mcast.h>
21 #include <vnet/interface.h>
22 #include <vlib/vlib.h>
23 
24 /**
25  * @file
26  * @brief VXLAN.
27  *
28  * VXLAN provides the features needed to allow L2 bridge domains (BDs)
29  * to span multiple servers. This is done by building an L2 overlay on
30  * top of an L3 network underlay using VXLAN tunnels.
31  *
32  * This makes it possible for servers to be co-located in the same data
33  * center or be separated geographically as long as they are reachable
34  * through the underlay L3 network.
35  *
36  * You can refer to this kind of L2 overlay bridge domain as a VXLAN
37  * (Virtual eXtensible VLAN) segment.
38  */
39 
40 
42 
43 static u8 * format_decap_next (u8 * s, va_list * args)
44 {
45  u32 next_index = va_arg (*args, u32);
46 
47  switch (next_index)
48  {
49  case VXLAN_INPUT_NEXT_DROP:
50  return format (s, "drop");
51  case VXLAN_INPUT_NEXT_L2_INPUT:
52  return format (s, "l2");
53  default:
54  return format (s, "index %d", next_index);
55  }
56  return s;
57 }
58 
59 u8 * format_vxlan_tunnel (u8 * s, va_list * args)
60 {
61  vxlan_tunnel_t * t = va_arg (*args, vxlan_tunnel_t *);
62  vxlan_main_t * ngm = &vxlan_main;
63 
64  s = format (s, "[%d] src %U dst %U vni %d sw_if_index %d ",
65  t - ngm->tunnels,
68  t->vni, t->sw_if_index);
69 
71  s = format (s, "mcast_sw_if_index %d ", t->mcast_sw_if_index);
72 
73  s = format (s, "encap_fib_index %d fib_entry_index %d decap_next %U\n",
76  return s;
77 }
78 
79 static u8 * format_vxlan_name (u8 * s, va_list * args)
80 {
81  u32 dev_instance = va_arg (*args, u32);
82  return format (s, "vxlan_tunnel%d", dev_instance);
83 }
84 
85 static clib_error_t *
87 {
88  u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
90  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
91 
92  return /* no error */ 0;
93 }
94 
95 VNET_DEVICE_CLASS (vxlan_device_class,static) = {
96  .name = "VXLAN",
97  .format_device_name = format_vxlan_name,
98  .format_tx_trace = format_vxlan_encap_trace,
99  .admin_up_down_function = vxlan_interface_admin_up_down,
100 };
101 
102 static u8 * format_vxlan_header_with_length (u8 * s, va_list * args)
103 {
104  u32 dev_instance = va_arg (*args, u32);
105  s = format (s, "unimplemented dev %u", dev_instance);
106  return s;
107 }
108 
109 VNET_HW_INTERFACE_CLASS (vxlan_hw_class) = {
110  .name = "VXLAN",
111  .format_header = format_vxlan_header_with_length,
112  .build_rewrite = default_build_rewrite,
113 };
114 
115 static void
117 {
118  dpo_id_t dpo = DPO_INVALID;
119  u32 encap_index = ip46_address_is_ip4(&t->dst) ?
120  vxlan4_encap_node.index : vxlan6_encap_node.index;
123 
124  fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
125  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
126  dpo_reset(&dpo);
127 }
128 
129 static vxlan_tunnel_t *
131 {
133  return ((vxlan_tunnel_t*) (((char*)node) -
135 }
136 
137 /**
138  * Function definition to backwalk a FIB node -
139  * Here we will restack the new dpo of VXLAN DIP to encap node.
140  */
144 {
147 }
148 
149 /**
150  * Function definition to get a FIB node from its index
151  */
152 static fib_node_t*
154 {
155  vxlan_tunnel_t * t;
156  vxlan_main_t * vxm = &vxlan_main;
157 
158  t = pool_elt_at_index(vxm->tunnels, index);
159 
160  return (&t->node);
161 }
162 
163 /**
164  * Function definition to inform the FIB node that its last lock has gone.
165  */
166 static void
168 {
169  /*
170  * The VXLAN tunnel is a root of the graph. As such
171  * it never has children and thus is never locked.
172  */
173  ASSERT(0);
174 }
175 
176 /*
177  * Virtual function table registered by VXLAN tunnels
178  * for participation in the FIB object graph.
179  */
180 const static fib_node_vft_t vxlan_vft = {
182  .fnv_last_lock = vxlan_tunnel_last_lock_gone,
183  .fnv_back_walk = vxlan_tunnel_back_walk,
184 };
185 
186 
187 #define foreach_copy_field \
188 _(vni) \
189 _(mcast_sw_if_index) \
190 _(encap_fib_index) \
191 _(decap_next_index) \
192 _(src) \
193 _(dst)
194 
195 static int
196 vxlan_rewrite (vxlan_tunnel_t * t, bool is_ip6)
197 {
198  union {
199  ip4_vxlan_header_t * h4;
200  ip6_vxlan_header_t * h6;
201  u8 *rw;
202  } r = { .rw = 0 };
203  int len = is_ip6 ? sizeof *r.h6 : sizeof *r.h4;
204 
206 
207  udp_header_t * udp;
208  vxlan_header_t * vxlan;
209  /* Fixed portion of the (outer) ip header */
210  if (!is_ip6)
211  {
212  ip4_header_t * ip = &r.h4->ip4;
213  udp = &r.h4->udp, vxlan = &r.h4->vxlan;
214  ip->ip_version_and_header_length = 0x45;
215  ip->ttl = 254;
216  ip->protocol = IP_PROTOCOL_UDP;
217 
218  ip->src_address = t->src.ip4;
219  ip->dst_address = t->dst.ip4;
220 
221  /* we fix up the ip4 header length and checksum after-the-fact */
222  ip->checksum = ip4_header_checksum (ip);
223  }
224  else
225  {
226  ip6_header_t * ip = &r.h6->ip6;
227  udp = &r.h6->udp, vxlan = &r.h6->vxlan;
228  ip->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32(6 << 28);
229  ip->hop_limit = 255;
230  ip->protocol = IP_PROTOCOL_UDP;
231 
232  ip->src_address = t->src.ip6;
233  ip->dst_address = t->dst.ip6;
234  }
235 
236  /* UDP header, randomize src port on something, maybe? */
237  udp->src_port = clib_host_to_net_u16 (4789);
238  udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_vxlan);
239 
240  /* VXLAN header */
241  vnet_set_vni_and_flags(vxlan, t->vni);
242 
243  t->rewrite = r.rw;
244  return (0);
245 }
246 
247 static bool
248 vxlan_decap_next_is_valid (vxlan_main_t * vxm, u32 is_ip6, u32 decap_next_index)
249 {
250  vlib_main_t * vm = vxm->vlib_main;
251  u32 input_idx = (!is_ip6) ? vxlan4_input_node.index : vxlan6_input_node.index;
252  vlib_node_runtime_t *r = vlib_node_get_runtime (vm, input_idx);
253 
254  return decap_next_index < r->n_next_nodes;
255 }
256 
257 static uword
258 vtep_addr_ref(ip46_address_t *ip)
259 {
260  uword *vtep = ip46_address_is_ip4(ip) ?
261  hash_get (vxlan_main.vtep4, ip->ip4.as_u32) :
262  hash_get_mem (vxlan_main.vtep6, &ip->ip6);
263  if (vtep)
264  return ++(*vtep);
265  ip46_address_is_ip4(ip) ?
266  hash_set (vxlan_main.vtep4, ip->ip4.as_u32, 1) :
267  hash_set_mem_alloc (&vxlan_main.vtep6, &ip->ip6, 1);
268  return 1;
269 }
270 
271 static uword
272 vtep_addr_unref(ip46_address_t *ip)
273 {
274  uword *vtep = ip46_address_is_ip4(ip) ?
275  hash_get (vxlan_main.vtep4, ip->ip4.as_u32) :
276  hash_get_mem (vxlan_main.vtep6, &ip->ip6);
277  ASSERT(vtep);
278  if (--(*vtep) != 0)
279  return *vtep;
280  ip46_address_is_ip4(ip) ?
281  hash_unset (vxlan_main.vtep4, ip->ip4.as_u32) :
282  hash_unset_mem_free (&vxlan_main.vtep6, &ip->ip6);
283  return 0;
284 }
285 
286 typedef CLIB_PACKED(union {
287  struct {
288  fib_node_index_t mfib_entry_index;
289  adj_index_t mcast_adj_index;
290  };
291  u64 as_u64;
292 }) mcast_shared_t;
293 
294 static inline mcast_shared_t
295 mcast_shared_get(ip46_address_t * ip)
296 {
298  uword * p = hash_get_mem (vxlan_main.mcast_shared, ip);
299  ASSERT(p);
300  return (mcast_shared_t) { .as_u64 = *p };
301 }
302 
303 static inline void
304 mcast_shared_add(ip46_address_t *dst,
305  fib_node_index_t mfei,
306  adj_index_t ai)
307 {
308  mcast_shared_t new_ep = {
309  .mcast_adj_index = ai,
310  .mfib_entry_index = mfei,
311  };
312 
313  hash_set_mem_alloc (&vxlan_main.mcast_shared, dst, new_ep.as_u64);
314 }
315 
316 static inline void
317 mcast_shared_remove(ip46_address_t *dst)
318 {
319  mcast_shared_t ep = mcast_shared_get(dst);
320 
321  adj_unlock(ep.mcast_adj_index);
322  mfib_table_entry_delete_index(ep.mfib_entry_index,
324 
325  hash_unset_mem_free (&vxlan_main.mcast_shared, dst);
326 }
327 
328 static inline fib_protocol_t
329 fib_ip_proto(bool is_ip6)
330 {
331  return (is_ip6) ? FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4;
332 }
333 
336 {
337  vxlan_main_t * vxm = &vxlan_main;
338  vxlan_tunnel_t *t = 0;
339  vnet_main_t * vnm = vxm->vnet_main;
340  uword * p;
341  u32 hw_if_index = ~0;
342  u32 sw_if_index = ~0;
343  int rv;
344  vxlan4_tunnel_key_t key4;
345  vxlan6_tunnel_key_t key6;
346  u32 is_ip6 = a->is_ip6;
347 
348  if (!is_ip6)
349  {
350  key4.src = a->dst.ip4.as_u32; /* decap src in key is encap dst in config */
351  key4.vni = clib_host_to_net_u32 (a->vni << 8);
352  p = hash_get (vxm->vxlan4_tunnel_by_key, key4.as_u64);
353  }
354  else
355  {
356  key6.src = a->dst.ip6;
357  key6.vni = clib_host_to_net_u32 (a->vni << 8);
358  p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6);
359  }
360 
361  if (a->is_add)
362  {
363  l2input_main_t * l2im = &l2input_main;
364 
365  /* adding a tunnel: tunnel must not already exist */
366  if (p)
367  return VNET_API_ERROR_TUNNEL_EXIST;
368 
369  /*if not set explicitly, default to l2 */
370  if(a->decap_next_index == ~0)
371  a->decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT;
372  if (!vxlan_decap_next_is_valid(vxm, is_ip6, a->decap_next_index))
373  return VNET_API_ERROR_INVALID_DECAP_NEXT;
374 
376  memset (t, 0, sizeof (*t));
377 
378  /* copy from arg structure */
379 #define _(x) t->x = a->x;
381 #undef _
382 
383  rv = vxlan_rewrite (t, is_ip6);
384  if (rv)
385  {
386  pool_put (vxm->tunnels, t);
387  return rv;
388  }
389 
390  /* copy the key */
391  if (is_ip6)
393  t - vxm->tunnels);
394  else
395  hash_set (vxm->vxlan4_tunnel_by_key, key4.as_u64, t - vxm->tunnels);
396 
399  {
401  hw_if_index = vxm->free_vxlan_tunnel_hw_if_indices
403  _vec_len (vxm->free_vxlan_tunnel_hw_if_indices) -= 1;
404 
405  hi = vnet_get_hw_interface (vnm, hw_if_index);
406  hi->dev_instance = t - vxm->tunnels;
407  hi->hw_instance = hi->dev_instance;
408 
409  /* clear old stats of freed tunnel before reuse */
410  sw_if_index = hi->sw_if_index;
417  (&im->sw_if_counters[VNET_INTERFACE_COUNTER_DROP], sw_if_index);
419  }
420  else
421  {
422  hw_if_index = vnet_register_interface
423  (vnm, vxlan_device_class.index, t - vxm->tunnels,
424  vxlan_hw_class.index, t - vxm->tunnels);
425  hi = vnet_get_hw_interface (vnm, hw_if_index);
426  }
427 
428  /* Set vxlan tunnel output node */
429  u32 encap_index = !is_ip6 ?
430  vxlan4_encap_node.index : vxlan6_encap_node.index;
431  vnet_set_interface_output_node (vnm, hw_if_index, encap_index);
432 
433  t->hw_if_index = hw_if_index;
434  t->sw_if_index = sw_if_index = hi->sw_if_index;
435 
437  vxm->tunnel_index_by_sw_if_index[sw_if_index] = t - vxm->tunnels;
438 
439  /* setup l2 input config with l2 feature and bd 0 to drop packet */
440  vec_validate (l2im->configs, sw_if_index);
441  l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
442  l2im->configs[sw_if_index].bd_index = 0;
443 
444  vnet_sw_interface_t * si = vnet_get_sw_interface (vnm, sw_if_index);
446  vnet_sw_interface_set_flags (vnm, sw_if_index,
448 
450  fib_prefix_t tun_dst_pfx;
452 
453  fib_prefix_from_ip46_addr(&t->dst, &tun_dst_pfx);
454  if (!ip46_address_is_multicast(&t->dst))
455  {
456  /* Unicast tunnel -
457  * source the FIB entry for the tunnel's destination
458  * and become a child thereof. The tunnel will then get poked
459  * when the forwarding for the entry updates, and the tunnel can
460  * re-stack accordingly
461  */
462  vtep_addr_ref(&t->src);
464  (t->encap_fib_index, &tun_dst_pfx, FIB_SOURCE_RR,
469  }
470  else
471  {
472  /* Multicast tunnel -
473  * as the same mcast group can be used for mutiple mcast tunnels
474  * with different VNIs, create the output fib adjecency only if
475  * it does not already exist
476  */
477  fib_protocol_t fp = fib_ip_proto(is_ip6);
478 
479  if (vtep_addr_ref(&t->dst) == 1)
480  {
481  fib_node_index_t mfei;
482  adj_index_t ai;
483  fib_route_path_t path = {
485  .frp_addr = zero_addr,
486  .frp_sw_if_index = 0xffffffff,
487  .frp_fib_index = ~0,
488  .frp_weight = 0,
489  .frp_flags = FIB_ROUTE_PATH_LOCAL,
490  };
491  const mfib_prefix_t mpfx = {
492  .fp_proto = fp,
493  .fp_len = (is_ip6 ? 128 : 32),
494  .fp_grp_addr = tun_dst_pfx.fp_addr,
495  };
496 
497  /*
498  * Setup the (*,G) to receive traffic on the mcast group
499  * - the forwarding interface is for-us
500  * - the accepting interface is that from the API
501  */
503  &mpfx,
505  &path,
507 
511  &mpfx,
513  &path,
515 
516  /*
517  * Create the mcast adjacency to send traffic to the group
518  */
519  ai = adj_mcast_add_or_lock(fp,
520  fib_proto_to_link(fp),
521  a->mcast_sw_if_index);
522 
523  /*
524  * create a new end-point
525  */
526  mcast_shared_add(&t->dst, mfei, ai);
527  }
528 
529  dpo_id_t dpo = DPO_INVALID;
530  mcast_shared_t ep = mcast_shared_get(&t->dst);
531 
532  /* Stack shared mcast dst mac addr rewrite on encap */
534  fib_proto_to_dpo(fp),
535  ep.mcast_adj_index);
536 
537  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
538  dpo_reset (&dpo);
539  flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
540  }
541 
542  vnet_get_sw_interface (vnet_get_main(), sw_if_index)->flood_class = flood_class;
543  }
544  else
545  {
546  /* deleting a tunnel: tunnel must exist */
547  if (!p)
548  return VNET_API_ERROR_NO_SUCH_ENTRY;
549 
550  t = pool_elt_at_index (vxm->tunnels, p[0]);
551 
552  sw_if_index = t->sw_if_index;
553  vnet_sw_interface_set_flags (vnm, t->sw_if_index, 0 /* down */);
556 
557  /* make sure tunnel is removed from l2 bd or xconnect */
558  set_int_l2_mode(vxm->vlib_main, vnm, MODE_L3, t->sw_if_index, 0, 0, 0, 0);
560 
562 
563  if (!is_ip6)
564  hash_unset (vxm->vxlan4_tunnel_by_key, key4.as_u64);
565  else
567 
568  if (!ip46_address_is_multicast(&t->dst))
569  {
570  vtep_addr_unref(&t->src);
573  }
574  else if (vtep_addr_unref(&t->dst) == 0)
575  {
577  }
578 
579  fib_node_deinit(&t->node);
580  vec_free (t->rewrite);
581  pool_put (vxm->tunnels, t);
582  }
583 
584  if (sw_if_indexp)
585  *sw_if_indexp = sw_if_index;
586 
587  return 0;
588 }
589 
590 static uword get_decap_next_for_node(u32 node_index, u32 ipv4_set)
591 {
592  vxlan_main_t * vxm = &vxlan_main;
593  vlib_main_t * vm = vxm->vlib_main;
594  uword input_node = (ipv4_set) ? vxlan4_input_node.index :
595  vxlan6_input_node.index;
596 
597  return vlib_node_add_next (vm, input_node, node_index);
598 }
599 
600 static uword unformat_decap_next (unformat_input_t * input, va_list * args)
601 {
602  u32 * result = va_arg (*args, u32 *);
603  u32 ipv4_set = va_arg (*args, int);
604  vxlan_main_t * vxm = &vxlan_main;
605  vlib_main_t * vm = vxm->vlib_main;
606  u32 node_index;
607  u32 tmp;
608 
609  if (unformat (input, "l2"))
610  *result = VXLAN_INPUT_NEXT_L2_INPUT;
611  else if (unformat (input, "node %U", unformat_vlib_node, vm, &node_index))
612  *result = get_decap_next_for_node(node_index, ipv4_set);
613  else if (unformat (input, "%d", &tmp))
614  *result = tmp;
615  else
616  return 0;
617  return 1;
618 }
619 
620 static clib_error_t *
622  unformat_input_t * input,
623  vlib_cli_command_t * cmd)
624 {
625  unformat_input_t _line_input, * line_input = &_line_input;
626  ip46_address_t src , dst;
627  u8 is_add = 1;
628  u8 src_set = 0;
629  u8 dst_set = 0;
630  u8 grp_set = 0;
631  u8 ipv4_set = 0;
632  u8 ipv6_set = 0;
633  u32 encap_fib_index = 0;
634  u32 mcast_sw_if_index = ~0;
635  u32 decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT;
636  u32 vni = 0;
637  u32 tmp;
638  int rv;
639  vnet_vxlan_add_del_tunnel_args_t _a, * a = &_a;
640  u32 tunnel_sw_if_index;
641  clib_error_t *error = NULL;
642 
643  /* Cant "universally zero init" (={0}) due to GCC bug 53119 */
644  memset(&src, 0, sizeof src);
645  memset(&dst, 0, sizeof dst);
646 
647  /* Get a line of input. */
648  if (! unformat_user (input, unformat_line_input, line_input))
649  return 0;
650 
651  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) {
652  if (unformat (line_input, "del"))
653  {
654  is_add = 0;
655  }
656  else if (unformat (line_input, "src %U",
657  unformat_ip4_address, &src.ip4))
658  {
659  src_set = 1;
660  ipv4_set = 1;
661  }
662  else if (unformat (line_input, "dst %U",
663  unformat_ip4_address, &dst.ip4))
664  {
665  dst_set = 1;
666  ipv4_set = 1;
667  }
668  else if (unformat (line_input, "src %U",
669  unformat_ip6_address, &src.ip6))
670  {
671  src_set = 1;
672  ipv6_set = 1;
673  }
674  else if (unformat (line_input, "dst %U",
675  unformat_ip6_address, &dst.ip6))
676  {
677  dst_set = 1;
678  ipv6_set = 1;
679  }
680  else if (unformat (line_input, "group %U %U",
681  unformat_ip4_address, &dst.ip4,
683  vnet_get_main(), &mcast_sw_if_index))
684  {
685  grp_set = dst_set = 1;
686  ipv4_set = 1;
687  }
688  else if (unformat (line_input, "group %U %U",
689  unformat_ip6_address, &dst.ip6,
691  vnet_get_main(), &mcast_sw_if_index))
692  {
693  grp_set = dst_set = 1;
694  ipv6_set = 1;
695  }
696  else if (unformat (line_input, "encap-vrf-id %d", &tmp))
697  {
698  encap_fib_index = fib_table_find (fib_ip_proto (ipv6_set), tmp);
699  if (encap_fib_index == ~0)
700  {
701  error = clib_error_return (0, "nonexistent encap-vrf-id %d", tmp);
702  goto done;
703  }
704  }
705  else if (unformat (line_input, "decap-next %U", unformat_decap_next,
706  &decap_next_index, ipv4_set))
707  ;
708  else if (unformat (line_input, "vni %d", &vni))
709  {
710  if (vni >> 24)
711  {
712  error = clib_error_return (0, "vni %d out of range", vni);
713  goto done;
714  }
715  }
716  else
717  {
718  error = clib_error_return (0, "parse error: '%U'",
719  format_unformat_error, line_input);
720  goto done;
721  }
722  }
723 
724  if (src_set == 0)
725  {
726  error = clib_error_return (0, "tunnel src address not specified");
727  goto done;
728  }
729 
730  if (dst_set == 0)
731  {
732  error = clib_error_return (0, "tunnel dst address not specified");
733  goto done;
734  }
735 
736  if (grp_set && !ip46_address_is_multicast(&dst))
737  {
738  error = clib_error_return (0, "tunnel group address not multicast");
739  goto done;
740  }
741 
742  if (grp_set == 0 && ip46_address_is_multicast(&dst))
743  {
744  error = clib_error_return (0, "dst address must be unicast");
745  goto done;
746  }
747 
748  if (grp_set && mcast_sw_if_index == ~0)
749  {
750  error = clib_error_return (0, "tunnel nonexistent multicast device");
751  goto done;
752  }
753 
754  if (ipv4_set && ipv6_set)
755  {
756  error = clib_error_return (0, "both IPv4 and IPv6 addresses specified");
757  goto done;
758  }
759 
760  if (ip46_address_cmp(&src, &dst) == 0)
761  {
762  error = clib_error_return (0, "src and dst addresses are identical");
763  goto done;
764  }
765 
766  if (decap_next_index == ~0)
767  {
768  error = clib_error_return (0, "next node not found");
769  goto done;
770  }
771 
772  if (vni == 0)
773  {
774  error = clib_error_return (0, "vni not specified");
775  goto done;
776  }
777 
778  memset (a, 0, sizeof (*a));
779 
780  a->is_add = is_add;
781  a->is_ip6 = ipv6_set;
782 
783 #define _(x) a->x = x;
785 #undef _
786 
787  rv = vnet_vxlan_add_del_tunnel (a, &tunnel_sw_if_index);
788 
789  switch(rv)
790  {
791  case 0:
792  if (is_add)
794  vnet_get_main(), tunnel_sw_if_index);
795  break;
796 
797  case VNET_API_ERROR_TUNNEL_EXIST:
798  error = clib_error_return (0, "tunnel already exists...");
799  goto done;
800 
801  case VNET_API_ERROR_NO_SUCH_ENTRY:
802  error = clib_error_return (0, "tunnel does not exist...");
803  goto done;
804 
805  default:
806  error = clib_error_return
807  (0, "vnet_vxlan_add_del_tunnel returned %d", rv);
808  goto done;
809  }
810 
811 done:
812  unformat_free (line_input);
813 
814  return error;
815 }
816 
817 /*?
818  * Add or delete a VXLAN Tunnel.
819  *
820  * VXLAN provides the features needed to allow L2 bridge domains (BDs)
821  * to span multiple servers. This is done by building an L2 overlay on
822  * top of an L3 network underlay using VXLAN tunnels.
823  *
824  * This makes it possible for servers to be co-located in the same data
825  * center or be separated geographically as long as they are reachable
826  * through the underlay L3 network.
827  *
828  * You can refer to this kind of L2 overlay bridge domain as a VXLAN
829  * (Virtual eXtensible VLAN) segment.
830  *
831  * @cliexpar
832  * Example of how to create a VXLAN Tunnel:
833  * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 encap-vrf-id 7}
834  * Example of how to delete a VXLAN Tunnel:
835  * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 del}
836  ?*/
837 /* *INDENT-OFF* */
838 VLIB_CLI_COMMAND (create_vxlan_tunnel_command, static) = {
839  .path = "create vxlan tunnel",
840  .short_help =
841  "create vxlan tunnel src <local-vtep-addr>"
842  " {dst <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>"
843  " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [del]",
845 };
846 /* *INDENT-ON* */
847 
848 static clib_error_t *
850  unformat_input_t * input,
851  vlib_cli_command_t * cmd)
852 {
853  vxlan_main_t * vxm = &vxlan_main;
854  vxlan_tunnel_t * t;
855 
856  if (pool_elts (vxm->tunnels) == 0)
857  vlib_cli_output (vm, "No vxlan tunnels configured...");
858 
859  pool_foreach (t, vxm->tunnels,
860  ({
861  vlib_cli_output (vm, "%U", format_vxlan_tunnel, t);
862  }));
863 
864  return 0;
865 }
866 
867 /*?
868  * Display all the VXLAN Tunnel entries.
869  *
870  * @cliexpar
871  * Example of how to display the VXLAN Tunnel entries:
872  * @cliexstart{show vxlan tunnel}
873  * [0] src 10.0.3.1 dst 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2
874  * @cliexend
875  ?*/
876 /* *INDENT-OFF* */
877 VLIB_CLI_COMMAND (show_vxlan_tunnel_command, static) = {
878  .path = "show vxlan tunnel",
879  .short_help = "show vxlan tunnel",
880  .function = show_vxlan_tunnel_command_fn,
881 };
882 /* *INDENT-ON* */
883 
884 
885 void vnet_int_vxlan_bypass_mode (u32 sw_if_index,
886  u8 is_ip6,
887  u8 is_enable)
888 {
889  if (is_ip6)
890  vnet_feature_enable_disable ("ip6-unicast", "ip6-vxlan-bypass",
891  sw_if_index, is_enable, 0, 0);
892  else
893  vnet_feature_enable_disable ("ip4-unicast", "ip4-vxlan-bypass",
894  sw_if_index, is_enable, 0, 0);
895 }
896 
897 
898 static clib_error_t *
900  unformat_input_t * input,
901  vlib_cli_command_t * cmd)
902 {
903  unformat_input_t _line_input, * line_input = &_line_input;
904  vnet_main_t * vnm = vnet_get_main();
905  clib_error_t * error = 0;
906  u32 sw_if_index, is_enable;
907 
908  sw_if_index = ~0;
909  is_enable = 1;
910 
911  if (! unformat_user (input, unformat_line_input, line_input))
912  return 0;
913 
914  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
915  {
916  if (unformat_user (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
917  ;
918  else if (unformat (line_input, "del"))
919  is_enable = 0;
920  else
921  {
922  error = unformat_parse_error (line_input);
923  goto done;
924  }
925  }
926 
927  if (~0 == sw_if_index)
928  {
929  error = clib_error_return (0, "unknown interface `%U'",
930  format_unformat_error, line_input);
931  goto done;
932  }
933 
934  vnet_int_vxlan_bypass_mode (sw_if_index, is_ip6, is_enable);
935 
936  done:
937  unformat_free (line_input);
938 
939  return error;
940 }
941 
942 static clib_error_t *
944  unformat_input_t * input,
945  vlib_cli_command_t * cmd)
946 {
947  return set_ip_vxlan_bypass (0, input, cmd);
948 }
949 
950 /*?
951  * This command adds the 'ip4-vxlan-bypass' graph node for a given interface.
952  * By adding the IPv4 vxlan-bypass graph node to an interface, the node checks
953  * for and validate input vxlan packet and bypass ip4-lookup, ip4-local,
954  * ip4-udp-lookup nodes to speedup vxlan packet forwarding. This node will
955  * cause extra overhead to for non-vxlan packets which is kept at a minimum.
956  *
957  * @cliexpar
958  * @parblock
959  * Example of graph node before ip4-vxlan-bypass is enabled:
960  * @cliexstart{show vlib graph ip4-vxlan-bypass}
961  * Name Next Previous
962  * ip4-vxlan-bypass error-drop [0]
963  * vxlan4-input [1]
964  * ip4-lookup [2]
965  * @cliexend
966  *
967  * Example of how to enable ip4-vxlan-bypass on an interface:
968  * @cliexcmd{set interface ip vxlan-bypass GigabitEthernet2/0/0}
969  *
970  * Example of graph node after ip4-vxlan-bypass is enabled:
971  * @cliexstart{show vlib graph ip4-vxlan-bypass}
972  * Name Next Previous
973  * ip4-vxlan-bypass error-drop [0] ip4-input
974  * vxlan4-input [1] ip4-input-no-checksum
975  * ip4-lookup [2]
976  * @cliexend
977  *
978  * Example of how to display the feature enabed on an interface:
979  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
980  * IP feature paths configured on GigabitEthernet2/0/0...
981  * ...
982  * ipv4 unicast:
983  * ip4-vxlan-bypass
984  * ip4-lookup
985  * ...
986  * @cliexend
987  *
988  * Example of how to disable ip4-vxlan-bypass on an interface:
989  * @cliexcmd{set interface ip vxlan-bypass GigabitEthernet2/0/0 del}
990  * @endparblock
991 ?*/
992 /* *INDENT-OFF* */
993 VLIB_CLI_COMMAND (set_interface_ip_vxlan_bypass_command, static) = {
994  .path = "set interface ip vxlan-bypass",
995  .function = set_ip4_vxlan_bypass,
996  .short_help = "set interface ip vxlan-bypass <interface> [del]",
997 };
998 /* *INDENT-ON* */
999 
1000 static clib_error_t *
1002  unformat_input_t * input,
1003  vlib_cli_command_t * cmd)
1004 {
1005  return set_ip_vxlan_bypass (1, input, cmd);
1006 }
1007 
1008 /*?
1009  * This command adds the 'ip6-vxlan-bypass' graph node for a given interface.
1010  * By adding the IPv6 vxlan-bypass graph node to an interface, the node checks
1011  * for and validate input vxlan packet and bypass ip6-lookup, ip6-local,
1012  * ip6-udp-lookup nodes to speedup vxlan packet forwarding. This node will
1013  * cause extra overhead to for non-vxlan packets which is kept at a minimum.
1014  *
1015  * @cliexpar
1016  * @parblock
1017  * Example of graph node before ip6-vxlan-bypass is enabled:
1018  * @cliexstart{show vlib graph ip6-vxlan-bypass}
1019  * Name Next Previous
1020  * ip6-vxlan-bypass error-drop [0]
1021  * vxlan6-input [1]
1022  * ip6-lookup [2]
1023  * @cliexend
1024  *
1025  * Example of how to enable ip6-vxlan-bypass on an interface:
1026  * @cliexcmd{set interface ip6 vxlan-bypass GigabitEthernet2/0/0}
1027  *
1028  * Example of graph node after ip6-vxlan-bypass is enabled:
1029  * @cliexstart{show vlib graph ip6-vxlan-bypass}
1030  * Name Next Previous
1031  * ip6-vxlan-bypass error-drop [0] ip6-input
1032  * vxlan6-input [1] ip4-input-no-checksum
1033  * ip6-lookup [2]
1034  * @cliexend
1035  *
1036  * Example of how to display the feature enabed on an interface:
1037  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1038  * IP feature paths configured on GigabitEthernet2/0/0...
1039  * ...
1040  * ipv6 unicast:
1041  * ip6-vxlan-bypass
1042  * ip6-lookup
1043  * ...
1044  * @cliexend
1045  *
1046  * Example of how to disable ip6-vxlan-bypass on an interface:
1047  * @cliexcmd{set interface ip6 vxlan-bypass GigabitEthernet2/0/0 del}
1048  * @endparblock
1049 ?*/
1050 /* *INDENT-OFF* */
1051 VLIB_CLI_COMMAND (set_interface_ip6_vxlan_bypass_command, static) = {
1052  .path = "set interface ip6 vxlan-bypass",
1053  .function = set_ip6_vxlan_bypass,
1054  .short_help = "set interface ip vxlan-bypass <interface> [del]",
1055 };
1056 /* *INDENT-ON* */
1057 
1059 {
1060  vxlan_main_t * vxm = &vxlan_main;
1061 
1062  vxm->vnet_main = vnet_get_main();
1063  vxm->vlib_main = vm;
1064 
1065  /* initialize the ip6 hash */
1067  sizeof(vxlan6_tunnel_key_t),
1068  sizeof(uword));
1069  vxm->vtep6 = hash_create_mem(0,
1070  sizeof(ip6_address_t),
1071  sizeof(uword));
1072  vxm->mcast_shared = hash_create_mem(0,
1073  sizeof(ip46_address_t),
1074  sizeof(mcast_shared_t));
1075 
1076  udp_register_dst_port (vm, UDP_DST_PORT_vxlan,
1077  vxlan4_input_node.index, /* is_ip4 */ 1);
1078  udp_register_dst_port (vm, UDP_DST_PORT_vxlan6,
1079  vxlan6_input_node.index, /* is_ip4 */ 0);
1080 
1082 
1083  return 0;
1084 }
1085 
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:432
void vnet_set_interface_output_node(vnet_main_t *vnm, u32 hw_if_index, u32 node_index)
Set interface output node - for interface registered without its output/tx nodes created because its ...
void dpo_stack_from_node(u32 child_node_index, dpo_id_t *dpo, const dpo_id_t *parent)
Stack one DPO object on another, and thus establish a child parent relationship.
Definition: dpo.c:485
vmrglw vmrglh hi
Recursive resolution source.
Definition: fib_entry.h:117
Contribute an object that is to be used to forward IP6 packets.
Definition: fib_types.h:92
#define hash_set(h, key, value)
Definition: hash.h:254
l2_input_config_t * configs
Definition: l2_input.h:66
u32 sibling_index
The tunnel is a child of the FIB entry for its desintion.
Definition: vxlan.h:113
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:538
#define hash_unset(h, key)
Definition: hash.h:260
static uword ip46_address_is_multicast(ip46_address_t *a)
Definition: ip6_packet.h:151
A representation of a path as described by a route producer.
Definition: fib_types.h:377
ip4_address_t src_address
Definition: ip4_packet.h:164
uword * vtep6
Definition: vxlan.h:145
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
vnet_interface_main_t interface_main
Definition: vnet.h:56
clib_error_t * vxlan_init(vlib_main_t *vm)
Definition: vxlan.c:1058
void fib_node_init(fib_node_t *node, fib_node_type_t type)
Definition: fib_node.c:185
u64 as_u64
Definition: bihash_doc.h:63
vlib_node_registration_t vxlan4_input_node
(constructor) VLIB_REGISTER_NODE (vxlan4_input_node)
Definition: decap.c:22
u32 fib_entry_child_add(fib_node_index_t fib_entry_index, fib_node_type_t child_type, fib_node_index_t child_index)
Definition: fib_entry.c:503
static clib_error_t * set_ip6_vxlan_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:1001
#define NULL
Definition: clib.h:55
enum fib_node_back_walk_rc_t_ fib_node_back_walk_rc_t
Return code from a back walk function.
void fib_entry_contribute_forwarding(fib_node_index_t fib_entry_index, fib_forward_chain_type_t fct, dpo_id_t *dpo)
Definition: fib_entry.c:408
uword * mcast_shared
Definition: vxlan.h:148
ip46_address_t dst
Definition: vxlan.h:80
static void mcast_shared_remove(ip46_address_t *dst)
Definition: vxlan.c:317
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
void fib_entry_child_remove(fib_node_index_t fib_entry_index, u32 sibling_index)
Definition: fib_entry.c:514
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:518
static clib_error_t * set_ip4_vxlan_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:943
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:88
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:62
void fib_node_deinit(fib_node_t *node)
Definition: fib_node.c:197
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
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:382
unformat_function_t unformat_vnet_sw_interface
#define VNET_HW_INTERFACE_FLAG_LINK_UP
Definition: interface.h:394
#define vec_validate_aligned(V, I, A)
Make sure vector is long enough for given index (no header, specified alignment)
Definition: vec.h:443
static vxlan_tunnel_t * vxlan_tunnel_from_fib_node(fib_node_t *node)
Definition: vxlan.c:130
ip6_address_t src_address
Definition: ip6_packet.h:341
#define ip46_address_cmp(ip46_1, ip46_2)
Definition: ip6_packet.h:80
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:1108
static clib_error_t * show_vxlan_tunnel_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:849
static fib_node_back_walk_rc_t vxlan_tunnel_back_walk(fib_node_t *node, fib_node_back_walk_ctx_t *ctx)
Function definition to backwalk a FIB node - Here we will restack the new dpo of VXLAN DIP to encap n...
Definition: vxlan.c:142
enum fib_protocol_t_ fib_protocol_t
Protocol Type.
void fib_node_register_type(fib_node_type_t type, const fib_node_vft_t *vft)
fib_node_register_type
Definition: fib_node.c:60
vnet_flood_class_t flood_class
Definition: interface.h:618
vnet_main_t * vnet_main
Definition: vxlan.h:158
VNET_DEVICE_CLASS(vxlan_device_class, static)
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:438
unformat_function_t unformat_ip4_address
Definition: format.h:76
u32 frp_sw_if_index
The interface.
Definition: fib_types.h:412
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
void mfib_table_entry_delete_index(fib_node_index_t mfib_entry_index, mfib_source_t source)
Delete a FIB entry.
Definition: mfib_table.c:380
ip4_address_t dst_address
Definition: ip4_packet.h:164
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:672
Aggregrate type for a prefix.
Definition: fib_types.h:172
static void vxlan_tunnel_last_lock_gone(fib_node_t *node)
Function definition to inform the FIB node that its last lock has gone.
Definition: vxlan.c:167
vlib_main_t * vlib_main
Definition: vxlan.h:157
#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
unsigned long u64
Definition: types.h:89
void adj_unlock(adj_index_t adj_index)
Release a reference counting lock on the adjacency.
Definition: adj.c:239
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:1028
static clib_error_t * vxlan_add_del_tunnel_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:621
fib_node_t node
Linkage into the FIB object graph.
Definition: vxlan.h:98
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:689
u32 set_int_l2_mode(vlib_main_t *vm, vnet_main_t *vnet_main, u32 mode, u32 sw_if_index, u32 bd_index, u32 bvi, u32 shg, u32 xc_sw_if_index)
Set the subinterface to run in l2 or l3 mode.
Definition: l2_input.c:565
Definition: fib_entry.h:238
unformat_function_t unformat_line_input
Definition: format.h:281
The identity of a DPO is a combination of its type and its instance number/index of objects of that t...
Definition: dpo.h:166
#define hash_create_mem(elts, key_bytes, value_bytes)
Definition: hash.h:660
#define hash_get(h, key)
Definition: hash.h:248
static fib_protocol_t fib_ip_proto(bool is_ip6)
Definition: vxlan.c:329
u8 * rewrite
Definition: vxlan.h:70
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:459
static void vlib_zero_combined_counter(vlib_combined_counter_main_t *cm, u32 index)
Clear a combined counter Clears the set of per-thread counters.
Definition: counter.h:276
static clib_error_t * vxlan_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: vxlan.c:86
ip46_address_t fp_addr
The address type is not deriveable from the fp_addr member.
Definition: fib_types.h:195
uword * vxlan4_tunnel_by_key
Definition: vxlan.h:139
struct _unformat_input_t unformat_input_t
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:271
vxlan_main_t vxlan_main
Definition: vxlan.c:41
vlib_simple_counter_main_t * sw_if_counters
Definition: interface.h:671
vlib_node_registration_t vxlan6_input_node
(constructor) VLIB_REGISTER_NODE (vxlan6_input_node)
Definition: decap.c:23
fib_node_type_t fn_type
The node&#39;s type.
Definition: fib_node.h:290
An node in the FIB graph.
Definition: fib_node.h:286
u8 * format_vxlan_encap_trace(u8 *s, va_list *args)
Definition: encap.c:49
static uword vtep_addr_unref(ip46_address_t *ip)
Definition: vxlan.c:272
#define ip46_address_is_ip4(ip46)
Definition: ip6_packet.h:76
unformat_function_t unformat_ip6_address
Definition: format.h:94
#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:371
int vnet_vxlan_add_del_tunnel(vnet_vxlan_add_del_tunnel_args_t *a, u32 *sw_if_indexp)
Definition: vxlan.c:335
typedef CLIB_PACKED(union{struct{fib_node_index_t mfib_entry_index;adj_index_t mcast_adj_index;};u64 as_u64;})
Definition: vxlan.c:286
#define UNFORMAT_END_OF_INPUT
Definition: format.h:143
vlib_main_t * vm
Definition: buffer.c:283
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:860
u32 mcast_sw_if_index
Definition: vxlan.h:83
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:336
vnet_flood_class_t
Definition: interface.h:557
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:274
static void vnet_interface_counter_unlock(vnet_interface_main_t *im)
Definition: interface.h:697
#define VNET_SW_INTERFACE_FLAG_HIDDEN
Definition: interface.h:588
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:29
static void vnet_set_vni_and_flags(vxlan_header_t *h, u32 vni)
Definition: vxlan_packet.h:62
u32 adj_index_t
An index for adjacencies.
Definition: adj_types.h:30
static uword unformat_decap_next(unformat_input_t *input, va_list *args)
Definition: vxlan.c:600
u32 decap_next_index
Definition: vxlan.h:86
void fib_prefix_from_ip46_addr(const ip46_address_t *addr, fib_prefix_t *pfx)
Host prefix from ip.
Definition: fib_types.c:54
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:182
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:1424
Context passed between object during a back walk.
Definition: fib_node.h:199
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
static u8 * format_vxlan_header_with_length(u8 *s, va_list *args)
Definition: vxlan.c:102
static void vnet_interface_counter_lock(vnet_interface_main_t *im)
Definition: interface.h:689
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:576
static void vxlan_tunnel_restack_dpo(vxlan_tunnel_t *t)
Definition: vxlan.c:116
#define ASSERT(truth)
unsigned int u32
Definition: types.h:88
static void mcast_shared_add(ip46_address_t *dst, fib_node_index_t mfei, adj_index_t ai)
Definition: vxlan.c:304
long ctx[MAX_CONNS]
Definition: main.c:122
static fib_node_t * vxlan_tunnel_fib_node_get(fib_node_index_t index)
Function definition to get a FIB node from its index.
Definition: vxlan.c:153
uword * vtep4
Definition: vxlan.h:144
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:469
uword * vxlan6_tunnel_by_key
Definition: vxlan.h:140
u32 sw_if_index
Definition: vxlan.h:92
static void vlib_zero_simple_counter(vlib_simple_counter_main_t *cm, u32 index)
Clear a simple counter Clears the set of per-thread u16 counters, and the u64 counter.
Definition: counter.h:123
dpo_proto_t fib_proto_to_dpo(fib_protocol_t fib_proto)
Definition: fib_types.c:211
static uword get_decap_next_for_node(u32 node_index, u32 ipv4_set)
Definition: vxlan.c:590
u32 hw_if_index
Definition: vxlan.h:93
static uword vtep_addr_ref(ip46_address_t *ip)
Definition: vxlan.c:258
u64 uword
Definition: types.h:112
#define foreach_copy_field
Definition: vxlan.c:187
#define unformat_parse_error(input)
Definition: format.h:267
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:328
fib_protocol_t fp_proto
protocol type
Definition: mfib_types.h:33
l2input_main_t l2input_main
Definition: l2_input.c:113
void vnet_int_vxlan_bypass_mode(u32 sw_if_index, u8 is_ip6, u8 is_enable)
Definition: vxlan.c:885
A for-us/local path.
Definition: fib_types.h:301
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
unsigned char u8
Definition: types.h:56
static clib_error_t * set_ip_vxlan_bypass(u32 is_ip6, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:899
fib_node_index_t fib_entry_index
Definition: vxlan.h:104
static void unformat_free(unformat_input_t *i)
Definition: format.h:161
static void hash_set_mem_alloc(uword **h, void *key, uword v)
Definition: hash.h:278
u32 encap_fib_index
Definition: vxlan.h:89
#define DPO_INVALID
An initialiser for DPOs declared on the stack.
Definition: dpo.h:193
static int vxlan_rewrite(vxlan_tunnel_t *t, bool is_ip6)
Definition: vxlan.c:196
unformat_function_t unformat_vlib_node
Definition: node_funcs.h:1155
u32 * tunnel_index_by_sw_if_index
Definition: vxlan.h:154
#define hash_get_mem(h, key)
Definition: hash.h:268
static void hash_unset_mem_free(uword **h, void *key)
Definition: hash.h:294
A FIB graph nodes virtual function table.
Definition: fib_node.h:273
static u8 * format_decap_next(u8 *s, va_list *args)
Definition: vxlan.c:43
vlib_node_registration_t vxlan4_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan4_encap_node)
Definition: encap.c:591
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:228
vlib_node_registration_t vxlan6_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan6_encap_node)
Definition: encap.c:607
vnet_link_t fib_proto_to_link(fib_protocol_t proto)
Convert from a protocol to a link type.
Definition: fib_types.c:245
clib_error_t * vnet_sw_interface_set_flags(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: interface.c:546
dpo_id_t next_dpo
Definition: vxlan.h:73
void udp_register_dst_port(vlib_main_t *vm, udp_dst_port_t dst_port, u32 node_index, u8 is_ip4)
Definition: udp_local.c:492
VNET_HW_INTERFACE_CLASS(vxlan_hw_class)
u8 ip_version_and_header_length
Definition: ip4_packet.h:132
u32 flags
Definition: vhost-user.h:77
#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:481
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:67
static bool vxlan_decap_next_is_valid(vxlan_main_t *vxm, u32 is_ip6, u32 decap_next_index)
Definition: vxlan.c:248
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:680
static u16 ip4_header_checksum(ip4_header_t *i)
Definition: ip4_packet.h:239
vxlan_tunnel_t * tunnels
Definition: vxlan.h:136
u32 * free_vxlan_tunnel_hw_if_indices
Definition: vxlan.h:151
const ip46_address_t zero_addr
Definition: lookup.c:359
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
ip46_address_t src
Definition: vxlan.h:79
u8 * format_vxlan_tunnel(u8 *s, va_list *args)
Definition: vxlan.c:59
static u8 * format_vxlan_name(u8 *s, va_list *args)
Definition: vxlan.c:79
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:229
ip6_address_t dst_address
Definition: ip6_packet.h:341
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:169
#define MODE_L3
Definition: l2_input.h:202
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128