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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 
86  vlib_node_runtime_t * node,
87  vlib_frame_t * frame)
88 {
89  clib_warning ("you shouldn't be here, leaking buffers...");
90  return frame->n_vectors;
91 }
92 
93 static clib_error_t *
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 VNET_DEVICE_CLASS (vxlan_device_class,static) = {
104  .name = "VXLAN",
105  .format_device_name = format_vxlan_name,
106  .format_tx_trace = format_vxlan_encap_trace,
107  .tx_function = dummy_interface_tx,
108  .admin_up_down_function = vxlan_interface_admin_up_down,
109 };
110 
111 static u8 * format_vxlan_header_with_length (u8 * s, va_list * args)
112 {
113  u32 dev_instance = va_arg (*args, u32);
114  s = format (s, "unimplemented dev %u", dev_instance);
115  return s;
116 }
117 
118 VNET_HW_INTERFACE_CLASS (vxlan_hw_class) = {
119  .name = "VXLAN",
120  .format_header = format_vxlan_header_with_length,
121  .build_rewrite = default_build_rewrite,
122 };
123 
124 static void
126 {
127  dpo_id_t dpo = DPO_INVALID;
128  u32 encap_index = ip46_address_is_ip4(&t->dst) ?
129  vxlan4_encap_node.index : vxlan6_encap_node.index;
132 
133  fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
134  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
135  dpo_reset(&dpo);
136 }
137 
138 static vxlan_tunnel_t *
140 {
141 #if (CLIB_DEBUG > 0)
143 #endif
144  return ((vxlan_tunnel_t*) (((char*)node) -
146 }
147 
148 /**
149  * Function definition to backwalk a FIB node -
150  * Here we will restack the new dpo of VXLAN DIP to encap node.
151  */
155 {
158 }
159 
160 /**
161  * Function definition to get a FIB node from its index
162  */
163 static fib_node_t*
165 {
166  vxlan_tunnel_t * t;
167  vxlan_main_t * vxm = &vxlan_main;
168 
169  t = pool_elt_at_index(vxm->tunnels, index);
170 
171  return (&t->node);
172 }
173 
174 /**
175  * Function definition to inform the FIB node that its last lock has gone.
176  */
177 static void
179 {
180  /*
181  * The VXLAN tunnel is a root of the graph. As such
182  * it never has children and thus is never locked.
183  */
184  ASSERT(0);
185 }
186 
187 /*
188  * Virtual function table registered by VXLAN tunnels
189  * for participation in the FIB object graph.
190  */
191 const static fib_node_vft_t vxlan_vft = {
193  .fnv_last_lock = vxlan_tunnel_last_lock_gone,
194  .fnv_back_walk = vxlan_tunnel_back_walk,
195 };
196 
197 
198 #define foreach_copy_field \
199 _(vni) \
200 _(mcast_sw_if_index) \
201 _(encap_fib_index) \
202 _(decap_next_index) \
203 _(src) \
204 _(dst)
205 
206 static int
207 vxlan_rewrite (vxlan_tunnel_t * t, bool is_ip6)
208 {
209  union {
210  ip4_vxlan_header_t * h4;
211  ip6_vxlan_header_t * h6;
212  u8 *rw;
213  } r = { .rw = 0 };
214  int len = is_ip6 ? sizeof *r.h6 : sizeof *r.h4;
215 
217 
218  udp_header_t * udp;
219  vxlan_header_t * vxlan;
220  /* Fixed portion of the (outer) ip header */
221  if (!is_ip6)
222  {
223  ip4_header_t * ip = &r.h4->ip4;
224  udp = &r.h4->udp, vxlan = &r.h4->vxlan;
225  ip->ip_version_and_header_length = 0x45;
226  ip->ttl = 254;
227  ip->protocol = IP_PROTOCOL_UDP;
228 
229  ip->src_address = t->src.ip4;
230  ip->dst_address = t->dst.ip4;
231 
232  /* we fix up the ip4 header length and checksum after-the-fact */
233  ip->checksum = ip4_header_checksum (ip);
234  }
235  else
236  {
237  ip6_header_t * ip = &r.h6->ip6;
238  udp = &r.h6->udp, vxlan = &r.h6->vxlan;
239  ip->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32(6 << 28);
240  ip->hop_limit = 255;
241  ip->protocol = IP_PROTOCOL_UDP;
242 
243  ip->src_address = t->src.ip6;
244  ip->dst_address = t->dst.ip6;
245  }
246 
247  /* UDP header, randomize src port on something, maybe? */
248  udp->src_port = clib_host_to_net_u16 (4789);
249  udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_vxlan);
250 
251  /* VXLAN header */
252  vnet_set_vni_and_flags(vxlan, t->vni);
253 
254  t->rewrite = r.rw;
255  return (0);
256 }
257 
258 static bool
259 vxlan_decap_next_is_valid (vxlan_main_t * vxm, u32 is_ip6, u32 decap_next_index)
260 {
261  vlib_main_t * vm = vxm->vlib_main;
262  u32 input_idx = (!is_ip6) ? vxlan4_input_node.index : vxlan6_input_node.index;
263  vlib_node_runtime_t *r = vlib_node_get_runtime (vm, input_idx);
264 
265  return decap_next_index < r->n_next_nodes;
266 }
267 
268 static void
269 hash_set_key_copy (uword ** h, void * key, uword v) {
270  size_t ksz = hash_header(*h)->user;
271  void * copy = clib_mem_alloc (ksz);
272  clib_memcpy (copy, key, ksz);
273  hash_set_mem (*h, copy, v);
274 }
275 
276 static void
277 hash_unset_key_free (uword ** h, void * key) {
278  hash_pair_t * hp = hash_get_pair_mem (*h, key);
279  ASSERT (hp);
280  key = uword_to_pointer (hp->key, void *);
281  hash_unset_mem (*h, key);
282  clib_mem_free (key);
283 }
284 
285 static uword
286 vtep_addr_ref(ip46_address_t *ip)
287 {
288  uword *vtep = ip46_address_is_ip4(ip) ?
289  hash_get (vxlan_main.vtep4, ip->ip4.as_u32) :
290  hash_get_mem (vxlan_main.vtep6, &ip->ip6);
291  if (vtep)
292  return ++(*vtep);
293  ip46_address_is_ip4(ip) ?
294  hash_set (vxlan_main.vtep4, ip->ip4.as_u32, 1) :
295  hash_set_key_copy (&vxlan_main.vtep6, &ip->ip6, 1);
296  return 1;
297 }
298 
299 static uword
300 vtep_addr_unref(ip46_address_t *ip)
301 {
302  uword *vtep = ip46_address_is_ip4(ip) ?
303  hash_get (vxlan_main.vtep4, ip->ip4.as_u32) :
304  hash_get_mem (vxlan_main.vtep6, &ip->ip6);
305  ASSERT(vtep);
306  if (--(*vtep) != 0)
307  return *vtep;
308  ip46_address_is_ip4(ip) ?
309  hash_unset (vxlan_main.vtep4, ip->ip4.as_u32) :
310  hash_unset_key_free (&vxlan_main.vtep6, &ip->ip6);
311  return 0;
312 }
313 
314 typedef CLIB_PACKED(union {
315  struct {
316  fib_node_index_t mfib_entry_index;
317  adj_index_t mcast_adj_index;
318  };
319  u64 as_u64;
320 }) mcast_shared_t;
321 
322 static inline mcast_shared_t
323 mcast_shared_get(ip46_address_t * ip)
324 {
326  uword * p = hash_get_mem (vxlan_main.mcast_shared, ip);
327  ASSERT(p);
328  return (mcast_shared_t) { .as_u64 = *p };
329 }
330 
331 static inline void
332 mcast_shared_add(ip46_address_t *dst,
333  fib_node_index_t mfei,
334  adj_index_t ai)
335 {
336  mcast_shared_t new_ep = {
337  .mcast_adj_index = ai,
338  .mfib_entry_index = mfei,
339  };
340 
341  hash_set_key_copy (&vxlan_main.mcast_shared, dst, new_ep.as_u64);
342 }
343 
344 static inline void
345 mcast_shared_remove(ip46_address_t *dst)
346 {
347  mcast_shared_t ep = mcast_shared_get(dst);
348 
349  adj_unlock(ep.mcast_adj_index);
350  mfib_table_entry_delete_index(ep.mfib_entry_index,
352 
353  hash_unset_key_free (&vxlan_main.mcast_shared, dst);
354 }
355 
356 static inline fib_protocol_t
357 fib_ip_proto(bool is_ip6)
358 {
359  return (is_ip6) ? FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4;
360 }
361 
364 {
365  vxlan_main_t * vxm = &vxlan_main;
366  vxlan_tunnel_t *t = 0;
367  vnet_main_t * vnm = vxm->vnet_main;
368  uword * p;
369  u32 hw_if_index = ~0;
370  u32 sw_if_index = ~0;
371  int rv;
372  vxlan4_tunnel_key_t key4;
373  vxlan6_tunnel_key_t key6;
374  u32 is_ip6 = a->is_ip6;
375 
376  if (!is_ip6)
377  {
378  key4.src = a->dst.ip4.as_u32; /* decap src in key is encap dst in config */
379  key4.vni = clib_host_to_net_u32 (a->vni << 8);
380  p = hash_get (vxm->vxlan4_tunnel_by_key, key4.as_u64);
381  }
382  else
383  {
384  key6.src = a->dst.ip6;
385  key6.vni = clib_host_to_net_u32 (a->vni << 8);
386  p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6);
387  }
388 
389  if (a->is_add)
390  {
391  l2input_main_t * l2im = &l2input_main;
392 
393  /* adding a tunnel: tunnel must not already exist */
394  if (p)
395  return VNET_API_ERROR_TUNNEL_EXIST;
396 
397  /*if not set explicitly, default to l2 */
398  if(a->decap_next_index == ~0)
399  a->decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT;
400  if (!vxlan_decap_next_is_valid(vxm, is_ip6, a->decap_next_index))
401  return VNET_API_ERROR_INVALID_DECAP_NEXT;
402 
404  memset (t, 0, sizeof (*t));
405 
406  /* copy from arg structure */
407 #define _(x) t->x = a->x;
409 #undef _
410 
411  rv = vxlan_rewrite (t, is_ip6);
412  if (rv)
413  {
414  pool_put (vxm->tunnels, t);
415  return rv;
416  }
417 
418  /* copy the key */
419  if (is_ip6)
420  hash_set_key_copy (&vxm->vxlan6_tunnel_by_key, &key6, t - vxm->tunnels);
421  else
422  hash_set (vxm->vxlan4_tunnel_by_key, key4.as_u64, t - vxm->tunnels);
423 
426  {
428  hw_if_index = vxm->free_vxlan_tunnel_hw_if_indices
430  _vec_len (vxm->free_vxlan_tunnel_hw_if_indices) -= 1;
431 
432  hi = vnet_get_hw_interface (vnm, hw_if_index);
433  hi->dev_instance = t - vxm->tunnels;
434  hi->hw_instance = hi->dev_instance;
435 
436  /* clear old stats of freed tunnel before reuse */
437  sw_if_index = hi->sw_if_index;
444  (&im->sw_if_counters[VNET_INTERFACE_COUNTER_DROP], sw_if_index);
446  }
447  else
448  {
449  hw_if_index = vnet_register_interface
450  (vnm, vxlan_device_class.index, t - vxm->tunnels,
451  vxlan_hw_class.index, t - vxm->tunnels);
452  hi = vnet_get_hw_interface (vnm, hw_if_index);
453  }
454 
455  t->hw_if_index = hw_if_index;
456  t->sw_if_index = sw_if_index = hi->sw_if_index;
457 
459  vxm->tunnel_index_by_sw_if_index[sw_if_index] = t - vxm->tunnels;
460 
461  /* setup l2 input config with l2 feature and bd 0 to drop packet */
462  vec_validate (l2im->configs, sw_if_index);
463  l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
464  l2im->configs[sw_if_index].bd_index = 0;
465 
466  vnet_sw_interface_t * si = vnet_get_sw_interface (vnm, sw_if_index);
468  vnet_sw_interface_set_flags (vnm, sw_if_index,
470 
472  fib_prefix_t tun_dst_pfx;
473  u32 encap_index = !is_ip6 ?
474  vxlan4_encap_node.index : vxlan6_encap_node.index;
476 
477  fib_prefix_from_ip46_addr(&t->dst, &tun_dst_pfx);
478  if (!ip46_address_is_multicast(&t->dst))
479  {
480  /* Unicast tunnel -
481  * source the FIB entry for the tunnel's destination
482  * and become a child thereof. The tunnel will then get poked
483  * when the forwarding for the entry updates, and the tunnel can
484  * re-stack accordingly
485  */
486  vtep_addr_ref(&t->src);
488  (t->encap_fib_index, &tun_dst_pfx, FIB_SOURCE_RR,
493  }
494  else
495  {
496  /* Multicast tunnel -
497  * as the same mcast group can be used for mutiple mcast tunnels
498  * with different VNIs, create the output fib adjecency only if
499  * it does not already exist
500  */
501  fib_protocol_t fp = fib_ip_proto(is_ip6);
502 
503  if (vtep_addr_ref(&t->dst) == 1)
504  {
505  fib_node_index_t mfei;
506  adj_index_t ai;
507  fib_route_path_t path = {
508  .frp_proto = fp,
509  .frp_addr = zero_addr,
510  .frp_sw_if_index = 0xffffffff,
511  .frp_fib_index = ~0,
512  .frp_weight = 0,
513  .frp_flags = FIB_ROUTE_PATH_LOCAL,
514  };
515  const mfib_prefix_t mpfx = {
516  .fp_proto = fp,
517  .fp_len = (is_ip6 ? 128 : 32),
518  .fp_grp_addr = tun_dst_pfx.fp_addr,
519  };
520 
521  /*
522  * Setup the (*,G) to receive traffic on the mcast group
523  * - the forwarding interface is for-us
524  * - the accepting interface is that from the API
525  */
527  &mpfx,
529  &path,
531 
535  &mpfx,
537  &path,
539 
540  /*
541  * Create the mcast adjacency to send traffic to the group
542  */
543  ai = adj_mcast_add_or_lock(fp,
544  fib_proto_to_link(fp),
545  a->mcast_sw_if_index);
546 
547  /*
548  * create a new end-point
549  */
550  mcast_shared_add(&t->dst, mfei, ai);
551  }
552 
553  dpo_id_t dpo = DPO_INVALID;
554  mcast_shared_t ep = mcast_shared_get(&t->dst);
555 
556  /* Stack shared mcast dst mac addr rewrite on encap */
558  fib_proto_to_dpo(fp),
559  ep.mcast_adj_index);
560 
561  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
562  dpo_reset (&dpo);
563  flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
564  }
565 
566  /* Set vxlan tunnel output node */
567  hi->output_node_index = encap_index;
568 
569  vnet_get_sw_interface (vnet_get_main(), sw_if_index)->flood_class = flood_class;
570  }
571  else
572  {
573  /* deleting a tunnel: tunnel must exist */
574  if (!p)
575  return VNET_API_ERROR_NO_SUCH_ENTRY;
576 
577  t = pool_elt_at_index (vxm->tunnels, p[0]);
578 
579  sw_if_index = t->sw_if_index;
580  vnet_sw_interface_set_flags (vnm, t->sw_if_index, 0 /* down */);
583 
584  /* make sure tunnel is removed from l2 bd or xconnect */
585  set_int_l2_mode(vxm->vlib_main, vnm, MODE_L3, t->sw_if_index, 0, 0, 0, 0);
587 
589 
590  if (!is_ip6)
591  hash_unset (vxm->vxlan4_tunnel_by_key, key4.as_u64);
592  else
594 
595  if (!ip46_address_is_multicast(&t->dst))
596  {
597  vtep_addr_unref(&t->src);
600  }
601  else if (vtep_addr_unref(&t->dst) == 0)
602  {
604  }
605 
606  fib_node_deinit(&t->node);
607  vec_free (t->rewrite);
608  pool_put (vxm->tunnels, t);
609  }
610 
611  if (sw_if_indexp)
612  *sw_if_indexp = sw_if_index;
613 
614  return 0;
615 }
616 
617 static uword get_decap_next_for_node(u32 node_index, u32 ipv4_set)
618 {
619  vxlan_main_t * vxm = &vxlan_main;
620  vlib_main_t * vm = vxm->vlib_main;
621  uword input_node = (ipv4_set) ? vxlan4_input_node.index :
622  vxlan6_input_node.index;
623 
624  return vlib_node_add_next (vm, input_node, node_index);
625 }
626 
627 static uword unformat_decap_next (unformat_input_t * input, va_list * args)
628 {
629  u32 * result = va_arg (*args, u32 *);
630  u32 ipv4_set = va_arg (*args, int);
631  vxlan_main_t * vxm = &vxlan_main;
632  vlib_main_t * vm = vxm->vlib_main;
633  u32 node_index;
634  u32 tmp;
635 
636  if (unformat (input, "l2"))
637  *result = VXLAN_INPUT_NEXT_L2_INPUT;
638  else if (unformat (input, "node %U", unformat_vlib_node, vm, &node_index))
639  *result = get_decap_next_for_node(node_index, ipv4_set);
640  else if (unformat (input, "%d", &tmp))
641  *result = tmp;
642  else
643  return 0;
644  return 1;
645 }
646 
647 static clib_error_t *
649  unformat_input_t * input,
650  vlib_cli_command_t * cmd)
651 {
652  unformat_input_t _line_input, * line_input = &_line_input;
653  ip46_address_t src , dst;
654  u8 is_add = 1;
655  u8 src_set = 0;
656  u8 dst_set = 0;
657  u8 grp_set = 0;
658  u8 ipv4_set = 0;
659  u8 ipv6_set = 0;
660  u32 encap_fib_index = 0;
661  u32 mcast_sw_if_index = ~0;
662  u32 decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT;
663  u32 vni = 0;
664  u32 tmp;
665  int rv;
666  vnet_vxlan_add_del_tunnel_args_t _a, * a = &_a;
667  u32 tunnel_sw_if_index;
668  clib_error_t *error = NULL;
669 
670  /* Cant "universally zero init" (={0}) due to GCC bug 53119 */
671  memset(&src, 0, sizeof src);
672  memset(&dst, 0, sizeof dst);
673 
674  /* Get a line of input. */
675  if (! unformat_user (input, unformat_line_input, line_input))
676  return 0;
677 
678  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) {
679  if (unformat (line_input, "del"))
680  {
681  is_add = 0;
682  }
683  else if (unformat (line_input, "src %U",
684  unformat_ip4_address, &src.ip4))
685  {
686  src_set = 1;
687  ipv4_set = 1;
688  }
689  else if (unformat (line_input, "dst %U",
690  unformat_ip4_address, &dst.ip4))
691  {
692  dst_set = 1;
693  ipv4_set = 1;
694  }
695  else if (unformat (line_input, "src %U",
696  unformat_ip6_address, &src.ip6))
697  {
698  src_set = 1;
699  ipv6_set = 1;
700  }
701  else if (unformat (line_input, "dst %U",
702  unformat_ip6_address, &dst.ip6))
703  {
704  dst_set = 1;
705  ipv6_set = 1;
706  }
707  else if (unformat (line_input, "group %U %U",
708  unformat_ip4_address, &dst.ip4,
710  vnet_get_main(), &mcast_sw_if_index))
711  {
712  grp_set = dst_set = 1;
713  ipv4_set = 1;
714  }
715  else if (unformat (line_input, "group %U %U",
716  unformat_ip6_address, &dst.ip6,
718  vnet_get_main(), &mcast_sw_if_index))
719  {
720  grp_set = dst_set = 1;
721  ipv6_set = 1;
722  }
723  else if (unformat (line_input, "encap-vrf-id %d", &tmp))
724  {
725  encap_fib_index = fib_table_find (fib_ip_proto (ipv6_set), tmp);
726  if (encap_fib_index == ~0)
727  {
728  error = clib_error_return (0, "nonexistent encap-vrf-id %d", tmp);
729  goto done;
730  }
731  }
732  else if (unformat (line_input, "decap-next %U", unformat_decap_next,
733  &decap_next_index, ipv4_set))
734  ;
735  else if (unformat (line_input, "vni %d", &vni))
736  {
737  if (vni >> 24)
738  {
739  error = clib_error_return (0, "vni %d out of range", vni);
740  goto done;
741  }
742  }
743  else
744  {
745  error = clib_error_return (0, "parse error: '%U'",
746  format_unformat_error, line_input);
747  goto done;
748  }
749  }
750 
751  if (src_set == 0)
752  {
753  error = clib_error_return (0, "tunnel src address not specified");
754  goto done;
755  }
756 
757  if (dst_set == 0)
758  {
759  error = clib_error_return (0, "tunnel dst address not specified");
760  goto done;
761  }
762 
763  if (grp_set && !ip46_address_is_multicast(&dst))
764  {
765  error = clib_error_return (0, "tunnel group address not multicast");
766  goto done;
767  }
768 
769  if (grp_set == 0 && ip46_address_is_multicast(&dst))
770  {
771  error = clib_error_return (0, "dst address must be unicast");
772  goto done;
773  }
774 
775  if (grp_set && mcast_sw_if_index == ~0)
776  {
777  error = clib_error_return (0, "tunnel nonexistent multicast device");
778  goto done;
779  }
780 
781  if (ipv4_set && ipv6_set)
782  {
783  error = clib_error_return (0, "both IPv4 and IPv6 addresses specified");
784  goto done;
785  }
786 
787  if (ip46_address_cmp(&src, &dst) == 0)
788  {
789  error = clib_error_return (0, "src and dst addresses are identical");
790  goto done;
791  }
792 
793  if (decap_next_index == ~0)
794  {
795  error = clib_error_return (0, "next node not found");
796  goto done;
797  }
798 
799  if (vni == 0)
800  {
801  error = clib_error_return (0, "vni not specified");
802  goto done;
803  }
804 
805  memset (a, 0, sizeof (*a));
806 
807  a->is_add = is_add;
808  a->is_ip6 = ipv6_set;
809 
810 #define _(x) a->x = x;
812 #undef _
813 
814  rv = vnet_vxlan_add_del_tunnel (a, &tunnel_sw_if_index);
815 
816  switch(rv)
817  {
818  case 0:
819  if (is_add)
821  vnet_get_main(), tunnel_sw_if_index);
822  break;
823 
824  case VNET_API_ERROR_TUNNEL_EXIST:
825  error = clib_error_return (0, "tunnel already exists...");
826  goto done;
827 
828  case VNET_API_ERROR_NO_SUCH_ENTRY:
829  error = clib_error_return (0, "tunnel does not exist...");
830  goto done;
831 
832  default:
833  error = clib_error_return
834  (0, "vnet_vxlan_add_del_tunnel returned %d", rv);
835  goto done;
836  }
837 
838 done:
839  unformat_free (line_input);
840 
841  return error;
842 }
843 
844 /*?
845  * Add or delete a VXLAN Tunnel.
846  *
847  * VXLAN provides the features needed to allow L2 bridge domains (BDs)
848  * to span multiple servers. This is done by building an L2 overlay on
849  * top of an L3 network underlay using VXLAN tunnels.
850  *
851  * This makes it possible for servers to be co-located in the same data
852  * center or be separated geographically as long as they are reachable
853  * through the underlay L3 network.
854  *
855  * You can refer to this kind of L2 overlay bridge domain as a VXLAN
856  * (Virtual eXtensible VLAN) segment.
857  *
858  * @cliexpar
859  * Example of how to create a VXLAN Tunnel:
860  * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 encap-vrf-id 7}
861  * Example of how to delete a VXLAN Tunnel:
862  * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 del}
863  ?*/
864 /* *INDENT-OFF* */
865 VLIB_CLI_COMMAND (create_vxlan_tunnel_command, static) = {
866  .path = "create vxlan tunnel",
867  .short_help =
868  "create vxlan tunnel src <local-vtep-addr>"
869  " {dst <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>"
870  " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [del]",
872 };
873 /* *INDENT-ON* */
874 
875 static clib_error_t *
877  unformat_input_t * input,
878  vlib_cli_command_t * cmd)
879 {
880  vxlan_main_t * vxm = &vxlan_main;
881  vxlan_tunnel_t * t;
882 
883  if (pool_elts (vxm->tunnels) == 0)
884  vlib_cli_output (vm, "No vxlan tunnels configured...");
885 
886  pool_foreach (t, vxm->tunnels,
887  ({
888  vlib_cli_output (vm, "%U", format_vxlan_tunnel, t);
889  }));
890 
891  return 0;
892 }
893 
894 /*?
895  * Display all the VXLAN Tunnel entries.
896  *
897  * @cliexpar
898  * Example of how to display the VXLAN Tunnel entries:
899  * @cliexstart{show vxlan tunnel}
900  * [0] src 10.0.3.1 dst 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2
901  * @cliexend
902  ?*/
903 /* *INDENT-OFF* */
904 VLIB_CLI_COMMAND (show_vxlan_tunnel_command, static) = {
905  .path = "show vxlan tunnel",
906  .short_help = "show vxlan tunnel",
907  .function = show_vxlan_tunnel_command_fn,
908 };
909 /* *INDENT-ON* */
910 
911 
912 void vnet_int_vxlan_bypass_mode (u32 sw_if_index,
913  u8 is_ip6,
914  u8 is_enable)
915 {
916  if (is_ip6)
917  vnet_feature_enable_disable ("ip6-unicast", "ip6-vxlan-bypass",
918  sw_if_index, is_enable, 0, 0);
919  else
920  vnet_feature_enable_disable ("ip4-unicast", "ip4-vxlan-bypass",
921  sw_if_index, is_enable, 0, 0);
922 }
923 
924 
925 static clib_error_t *
927  unformat_input_t * input,
928  vlib_cli_command_t * cmd)
929 {
930  unformat_input_t _line_input, * line_input = &_line_input;
931  vnet_main_t * vnm = vnet_get_main();
932  clib_error_t * error = 0;
933  u32 sw_if_index, is_enable;
934 
935  sw_if_index = ~0;
936  is_enable = 1;
937 
938  if (! unformat_user (input, unformat_line_input, line_input))
939  return 0;
940 
941  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
942  {
943  if (unformat_user (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
944  ;
945  else if (unformat (line_input, "del"))
946  is_enable = 0;
947  else
948  {
949  error = unformat_parse_error (line_input);
950  goto done;
951  }
952  }
953 
954  if (~0 == sw_if_index)
955  {
956  error = clib_error_return (0, "unknown interface `%U'",
957  format_unformat_error, line_input);
958  goto done;
959  }
960 
961  vnet_int_vxlan_bypass_mode (sw_if_index, is_ip6, is_enable);
962 
963  done:
964  unformat_free (line_input);
965 
966  return error;
967 }
968 
969 static clib_error_t *
971  unformat_input_t * input,
972  vlib_cli_command_t * cmd)
973 {
974  return set_ip_vxlan_bypass (0, input, cmd);
975 }
976 
977 /*?
978  * This command adds the 'ip4-vxlan-bypass' graph node for a given interface.
979  * By adding the IPv4 vxlan-bypass graph node to an interface, the node checks
980  * for and validate input vxlan packet and bypass ip4-lookup, ip4-local,
981  * ip4-udp-lookup nodes to speedup vxlan packet forwarding. This node will
982  * cause extra overhead to for non-vxlan packets which is kept at a minimum.
983  *
984  * @cliexpar
985  * @parblock
986  * Example of graph node before ip4-vxlan-bypass is enabled:
987  * @cliexstart{show vlib graph ip4-vxlan-bypass}
988  * Name Next Previous
989  * ip4-vxlan-bypass error-drop [0]
990  * vxlan4-input [1]
991  * ip4-lookup [2]
992  * @cliexend
993  *
994  * Example of how to enable ip4-vxlan-bypass on an interface:
995  * @cliexcmd{set interface ip vxlan-bypass GigabitEthernet2/0/0}
996  *
997  * Example of graph node after ip4-vxlan-bypass is enabled:
998  * @cliexstart{show vlib graph ip4-vxlan-bypass}
999  * Name Next Previous
1000  * ip4-vxlan-bypass error-drop [0] ip4-input
1001  * vxlan4-input [1] ip4-input-no-checksum
1002  * ip4-lookup [2]
1003  * @cliexend
1004  *
1005  * Example of how to display the feature enabed on an interface:
1006  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1007  * IP feature paths configured on GigabitEthernet2/0/0...
1008  * ...
1009  * ipv4 unicast:
1010  * ip4-vxlan-bypass
1011  * ip4-lookup
1012  * ...
1013  * @cliexend
1014  *
1015  * Example of how to disable ip4-vxlan-bypass on an interface:
1016  * @cliexcmd{set interface ip vxlan-bypass GigabitEthernet2/0/0 del}
1017  * @endparblock
1018 ?*/
1019 /* *INDENT-OFF* */
1020 VLIB_CLI_COMMAND (set_interface_ip_vxlan_bypass_command, static) = {
1021  .path = "set interface ip vxlan-bypass",
1022  .function = set_ip4_vxlan_bypass,
1023  .short_help = "set interface ip vxlan-bypass <interface> [del]",
1024 };
1025 /* *INDENT-ON* */
1026 
1027 static clib_error_t *
1029  unformat_input_t * input,
1030  vlib_cli_command_t * cmd)
1031 {
1032  return set_ip_vxlan_bypass (1, input, cmd);
1033 }
1034 
1035 /*?
1036  * This command adds the 'ip6-vxlan-bypass' graph node for a given interface.
1037  * By adding the IPv6 vxlan-bypass graph node to an interface, the node checks
1038  * for and validate input vxlan packet and bypass ip6-lookup, ip6-local,
1039  * ip6-udp-lookup nodes to speedup vxlan packet forwarding. This node will
1040  * cause extra overhead to for non-vxlan packets which is kept at a minimum.
1041  *
1042  * @cliexpar
1043  * @parblock
1044  * Example of graph node before ip6-vxlan-bypass is enabled:
1045  * @cliexstart{show vlib graph ip6-vxlan-bypass}
1046  * Name Next Previous
1047  * ip6-vxlan-bypass error-drop [0]
1048  * vxlan6-input [1]
1049  * ip6-lookup [2]
1050  * @cliexend
1051  *
1052  * Example of how to enable ip6-vxlan-bypass on an interface:
1053  * @cliexcmd{set interface ip6 vxlan-bypass GigabitEthernet2/0/0}
1054  *
1055  * Example of graph node after ip6-vxlan-bypass is enabled:
1056  * @cliexstart{show vlib graph ip6-vxlan-bypass}
1057  * Name Next Previous
1058  * ip6-vxlan-bypass error-drop [0] ip6-input
1059  * vxlan6-input [1] ip4-input-no-checksum
1060  * ip6-lookup [2]
1061  * @cliexend
1062  *
1063  * Example of how to display the feature enabed on an interface:
1064  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1065  * IP feature paths configured on GigabitEthernet2/0/0...
1066  * ...
1067  * ipv6 unicast:
1068  * ip6-vxlan-bypass
1069  * ip6-lookup
1070  * ...
1071  * @cliexend
1072  *
1073  * Example of how to disable ip6-vxlan-bypass on an interface:
1074  * @cliexcmd{set interface ip6 vxlan-bypass GigabitEthernet2/0/0 del}
1075  * @endparblock
1076 ?*/
1077 /* *INDENT-OFF* */
1078 VLIB_CLI_COMMAND (set_interface_ip6_vxlan_bypass_command, static) = {
1079  .path = "set interface ip6 vxlan-bypass",
1080  .function = set_ip6_vxlan_bypass,
1081  .short_help = "set interface ip vxlan-bypass <interface> [del]",
1082 };
1083 /* *INDENT-ON* */
1084 
1086 {
1087  vxlan_main_t * vxm = &vxlan_main;
1088 
1089  vxm->vnet_main = vnet_get_main();
1090  vxm->vlib_main = vm;
1091 
1092  /* initialize the ip6 hash */
1094  sizeof(vxlan6_tunnel_key_t),
1095  sizeof(uword));
1096  vxm->vtep6 = hash_create_mem(0,
1097  sizeof(ip6_address_t),
1098  sizeof(uword));
1099  vxm->mcast_shared = hash_create_mem(0,
1100  sizeof(ip46_address_t),
1101  sizeof(mcast_shared_t));
1102 
1103  udp_register_dst_port (vm, UDP_DST_PORT_vxlan,
1104  vxlan4_input_node.index, /* is_ip4 */ 1);
1105  udp_register_dst_port (vm, UDP_DST_PORT_vxlan6,
1106  vxlan6_input_node.index, /* is_ip4 */ 0);
1107 
1109 
1110  return 0;
1111 }
1112 
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:436
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:431
vmrglw vmrglh hi
fib_protocol_t frp_proto
The protocol of the address below.
Definition: fib_types.h:341
any user
Definition: hash.h:85
Recursive resolution source.
Definition: fib_entry.h:109
Contribute an object that is to be used to forward IP6 packets.
Definition: fib_types.h:85
#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:537
#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:336
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:46
vnet_interface_main_t interface_main
Definition: vnet.h:56
clib_error_t * vxlan_init(vlib_main_t *vm)
Definition: vxlan.c:1085
void fib_node_init(fib_node_t *node, fib_node_type_t type)
Definition: fib_node.c:183
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:489
static clib_error_t * set_ip6_vxlan_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:1028
static void hash_unset_key_free(uword **h, void *key)
Definition: vxlan.c:277
#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:394
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:345
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:500
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:522
static clib_error_t * set_ip4_vxlan_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: vxlan.c:970
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:81
#define hash_set_mem(h, key, value)
Definition: hash.h:274
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:62
void fib_node_deinit(fib_node_t *node)
Definition: fib_node.c:198
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
#define hash_get_pair_mem(h, key)
Definition: hash.h:271
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
unformat_function_t unformat_vnet_sw_interface
#define VNET_HW_INTERFACE_FLAG_LINK_UP
Definition: interface.h:397
#define vec_validate_aligned(V, I, A)
Make sure vector is long enough for given index (no header, specified alignment)
Definition: vec.h:447
static vxlan_tunnel_t * vxlan_tunnel_from_fib_node(fib_node_t *node)
Definition: vxlan.c:139
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:1081
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:876
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:153
enum fib_protocol_t_ fib_protocol_t
Protocol Type.
static void hash_set_key_copy(uword **h, void *key, uword v)
Definition: vxlan.c:269
void fib_node_register_type(fib_node_type_t type, const fib_node_vft_t *vft)
fib_node_register_type
Definition: fib_node.c:58
vnet_flood_class_t flood_class
Definition: interface.h:599
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:376
unformat_function_t unformat_ip4_address
Definition: format.h:76
u32 frp_sw_if_index
The interface.
Definition: fib_types.h:369
#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:653
Aggregrate type for a prefix.
Definition: fib_types.h:160
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:178
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:229
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:1025
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:648
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:688
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:517
Definition: fib_entry.h:233
unformat_function_t unformat_line_input
Definition: format.h:281
static hash_t * hash_header(void *v)
Definition: hash.h:110
The identity of a DPO is a combination of its type and its instance number/index of objects of that t...
Definition: dpo.h:152
#define hash_create_mem(elts, key_bytes, value_bytes)
Definition: hash.h:637
#define hash_get(h, key)
Definition: hash.h:248
static fib_protocol_t fib_ip_proto(bool is_ip6)
Definition: vxlan.c:357
u8 * rewrite
Definition: vxlan.h:70
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:397
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
#define hash_unset_mem(h, key)
Definition: hash.h:280
static clib_error_t * vxlan_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: vxlan.c:94
ip46_address_t fp_addr
The address type is not deriveable from the fp_addr member.
Definition: fib_types.h:183
uword * vxlan4_tunnel_by_key
Definition: vxlan.h:139
#define v
Definition: acl.c:320
struct _unformat_input_t unformat_input_t
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:241
vxlan_main_t vxlan_main
Definition: vxlan.c:41
vlib_simple_counter_main_t * sw_if_counters
Definition: interface.h:652
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:284
An node in the FIB graph.
Definition: fib_node.h:279
u8 * format_vxlan_encap_trace(u8 *s, va_list *args)
Definition: encap.c:49
#define uword_to_pointer(u, type)
Definition: types.h:136
static uword vtep_addr_unref(ip46_address_t *ip)
Definition: vxlan.c:300
#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:169
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:363
typedef CLIB_PACKED(union{struct{fib_node_index_t mfib_entry_index;adj_index_t mcast_adj_index;};u64 as_u64;})
Definition: vxlan.c:314
#define UNFORMAT_END_OF_INPUT
Definition: format.h:143
u16 n_vectors
Definition: node.h:345
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:858
static uword dummy_interface_tx(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: vxlan.c:85
u32 mcast_sw_if_index
Definition: vxlan.h:83
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:340
vnet_flood_class_t
Definition: interface.h:541
#define clib_warning(format, args...)
Definition: error.h:59
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:88
fib_node_get_t fnv_get
Definition: fib_node.h:267
#define clib_memcpy(a, b, c)
Definition: string.h:69
static void vnet_interface_counter_unlock(vnet_interface_main_t *im)
Definition: interface.h:678
#define VNET_SW_INTERFACE_FLAG_HIDDEN
Definition: interface.h:572
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:28
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:627
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:159
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:1404
Context passed between object during a back walk.
Definition: fib_node.h:192
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
static u8 * format_vxlan_header_with_length(u8 *s, va_list *args)
Definition: vxlan.c:111
static void vnet_interface_counter_lock(vnet_interface_main_t *im)
Definition: interface.h:670
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:560
static void vxlan_tunnel_restack_dpo(vxlan_tunnel_t *t)
Definition: vxlan.c:125
#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:332
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:164
static void clib_mem_free(void *p)
Definition: mem.h:176
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:387
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:617
u32 hw_if_index
Definition: vxlan.h:93
static void * clib_mem_alloc(uword size)
Definition: mem.h:109
static uword vtep_addr_ref(ip46_address_t *ip)
Definition: vxlan.c:286
u64 uword
Definition: types.h:112
#define foreach_copy_field
Definition: vxlan.c:198
#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:88
void vnet_int_vxlan_bypass_mode(u32 sw_if_index, u8 is_ip6, u8 is_enable)
Definition: vxlan.c:912
A for-us/local path.
Definition: fib_types.h:284
#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:926
fib_node_index_t fib_entry_index
Definition: vxlan.h:104
static void unformat_free(unformat_input_t *i)
Definition: format.h:161
u32 encap_fib_index
Definition: vxlan.h:89
#define DPO_INVALID
An initialiser for DPOs declared on the stack.
Definition: dpo.h:179
static int vxlan_rewrite(vxlan_tunnel_t *t, bool is_ip6)
Definition: vxlan.c:207
unformat_function_t unformat_vlib_node
Definition: node_funcs.h:1128
u32 * tunnel_index_by_sw_if_index
Definition: vxlan.h:154
#define hash_get_mem(h, key)
Definition: hash.h:268
A FIB graph nodes virtual function table.
Definition: fib_node.h:266
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:522
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:205
vlib_node_registration_t vxlan6_encap_node
(constructor) VLIB_REGISTER_NODE (vxlan6_encap_node)
Definition: encap.c:538
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:545
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:488
VNET_HW_INTERFACE_CLASS(vxlan_hw_class)
u8 ip_version_and_header_length
Definition: ip4_packet.h:132
u32 flags
Definition: vhost-user.h:76
#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:485
#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:259
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
uword key
Definition: hash.h:161
const ip46_address_t zero_addr
Definition: lookup.c:348
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:225
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:198
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:109