FD.io VPP  v19.04.4-rc0-5-ge88582fac
Vector Packet Processing
gtpu.c
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1 /*
2  *------------------------------------------------------------------
3  * Copyright (c) 2017 Intel and/or its affiliates.
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at:
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  *------------------------------------------------------------------
16  */
17 #include <stdint.h>
18 #include <net/if.h>
19 #include <sys/ioctl.h>
20 #include <inttypes.h>
21 
22 #include <vlib/vlib.h>
23 #include <vlib/unix/unix.h>
24 #include <vnet/ethernet/ethernet.h>
25 #include <vnet/fib/fib_entry.h>
26 #include <vnet/fib/fib_table.h>
27 #include <vnet/mfib/mfib_table.h>
28 #include <vnet/adj/adj_mcast.h>
29 #include <vnet/dpo/dpo.h>
30 #include <vnet/plugin/plugin.h>
31 #include <vpp/app/version.h>
32 #include <gtpu/gtpu.h>
33 
34 
36 
37 /* *INDENT-OFF* */
38 VNET_FEATURE_INIT (ip4_gtpu_bypass, static) = {
39  .arc_name = "ip4-unicast",
40  .node_name = "ip4-gtpu-bypass",
41  .runs_before = VNET_FEATURES ("ip4-lookup"),
42 };
43 
44 VNET_FEATURE_INIT (ip6_gtpu_bypass, static) = {
45  .arc_name = "ip6-unicast",
46  .node_name = "ip6-gtpu-bypass",
47  .runs_before = VNET_FEATURES ("ip6-lookup"),
48 };
49 /* *INDENT-on* */
50 
51 u8 * format_gtpu_encap_trace (u8 * s, va_list * args)
52 {
53  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
54  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
56  = va_arg (*args, gtpu_encap_trace_t *);
57 
58  s = format (s, "GTPU encap to gtpu_tunnel%d teid %d",
59  t->tunnel_index, t->teid);
60  return s;
61 }
62 
63 static u8 *
64 format_decap_next (u8 * s, va_list * args)
65 {
66  u32 next_index = va_arg (*args, u32);
67 
68  switch (next_index)
69  {
70  case GTPU_INPUT_NEXT_DROP:
71  return format (s, "drop");
72  case GTPU_INPUT_NEXT_L2_INPUT:
73  return format (s, "l2");
74  case GTPU_INPUT_NEXT_IP4_INPUT:
75  return format (s, "ip4");
76  case GTPU_INPUT_NEXT_IP6_INPUT:
77  return format (s, "ip6");
78  default:
79  return format (s, "index %d", next_index);
80  }
81  return s;
82 }
83 
84 u8 *
85 format_gtpu_tunnel (u8 * s, va_list * args)
86 {
87  gtpu_tunnel_t *t = va_arg (*args, gtpu_tunnel_t *);
88  gtpu_main_t *ngm = &gtpu_main;
89 
90  s = format (s, "[%d] src %U dst %U teid %d fib-idx %d sw-if-idx %d ",
91  t - ngm->tunnels,
94  t->teid, t->encap_fib_index, t->sw_if_index);
95 
96  s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index);
97  s = format (s, "decap-next-%U ", format_decap_next, t->decap_next_index);
98 
100  s = format (s, "mcast-sw-if-idx %d ", t->mcast_sw_if_index);
101 
102  return s;
103 }
104 
105 static u8 *
106 format_gtpu_name (u8 * s, va_list * args)
107 {
108  u32 dev_instance = va_arg (*args, u32);
109  return format (s, "gtpu_tunnel%d", dev_instance);
110 }
111 
112 static clib_error_t *
114 {
115  u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
117  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
118 
119  return /* no error */ 0;
120 }
121 
122 /* *INDENT-OFF* */
123 VNET_DEVICE_CLASS (gtpu_device_class,static) = {
124  .name = "GTPU",
125  .format_device_name = format_gtpu_name,
126  .format_tx_trace = format_gtpu_encap_trace,
127  .admin_up_down_function = gtpu_interface_admin_up_down,
128 };
129 /* *INDENT-ON* */
130 
131 static u8 *
132 format_gtpu_header_with_length (u8 * s, va_list * args)
133 {
134  u32 dev_instance = va_arg (*args, u32);
135  s = format (s, "unimplemented dev %u", dev_instance);
136  return s;
137 }
138 
139 /* *INDENT-OFF* */
140 VNET_HW_INTERFACE_CLASS (gtpu_hw_class) =
141 {
142  .name = "GTPU",
143  .format_header = format_gtpu_header_with_length,
144  .build_rewrite = default_build_rewrite,
146 };
147 /* *INDENT-ON* */
148 
149 static void
151 {
152  dpo_id_t dpo = DPO_INVALID;
153  u32 encap_index = ip46_address_is_ip4 (&t->dst) ?
154  gtpu4_encap_node.index : gtpu6_encap_node.index;
157 
158  fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
159  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
160  dpo_reset (&dpo);
161 }
162 
163 static gtpu_tunnel_t *
165 {
166  return ((gtpu_tunnel_t *) (((char *) node) -
168 }
169 
170 /**
171  * Function definition to backwalk a FIB node -
172  * Here we will restack the new dpo of GTPU DIP to encap node.
173  */
176 {
179 }
180 
181 /**
182  * Function definition to get a FIB node from its index
183  */
184 static fib_node_t *
186 {
187  gtpu_tunnel_t *t;
188  gtpu_main_t *gtm = &gtpu_main;
189 
190  t = pool_elt_at_index (gtm->tunnels, index);
191 
192  return (&t->node);
193 }
194 
195 /**
196  * Function definition to inform the FIB node that its last lock has gone.
197  */
198 static void
200 {
201  /*
202  * The GTPU tunnel is a root of the graph. As such
203  * it never has children and thus is never locked.
204  */
205  ASSERT (0);
206 }
207 
208 /*
209  * Virtual function table registered by GTPU tunnels
210  * for participation in the FIB object graph.
211  */
212 const static fib_node_vft_t gtpu_vft = {
214  .fnv_last_lock = gtpu_tunnel_last_lock_gone,
215  .fnv_back_walk = gtpu_tunnel_back_walk,
216 };
217 
218 
219 #define foreach_copy_field \
220 _(teid) \
221 _(mcast_sw_if_index) \
222 _(encap_fib_index) \
223 _(decap_next_index) \
224 _(src) \
225 _(dst)
226 
227 static void
229 {
230  union
231  {
232  ip4_gtpu_header_t *h4;
233  ip6_gtpu_header_t *h6;
234  u8 *rw;
235  } r =
236  {
237  .rw = 0};
238  int len = is_ip6 ? sizeof *r.h6 : sizeof *r.h4;
239 
241 
242  udp_header_t *udp;
243  gtpu_header_t *gtpu;
244  /* Fixed portion of the (outer) ip header */
245  if (!is_ip6)
246  {
247  ip4_header_t *ip = &r.h4->ip4;
248  udp = &r.h4->udp;
249  gtpu = &r.h4->gtpu;
250  ip->ip_version_and_header_length = 0x45;
251  ip->ttl = 254;
252  ip->protocol = IP_PROTOCOL_UDP;
253 
254  ip->src_address = t->src.ip4;
255  ip->dst_address = t->dst.ip4;
256 
257  /* we fix up the ip4 header length and checksum after-the-fact */
258  ip->checksum = ip4_header_checksum (ip);
259  }
260  else
261  {
262  ip6_header_t *ip = &r.h6->ip6;
263  udp = &r.h6->udp;
264  gtpu = &r.h6->gtpu;
266  clib_host_to_net_u32 (6 << 28);
267  ip->hop_limit = 255;
268  ip->protocol = IP_PROTOCOL_UDP;
269 
270  ip->src_address = t->src.ip6;
271  ip->dst_address = t->dst.ip6;
272  }
273 
274  /* UDP header, randomize src port on something, maybe? */
275  udp->src_port = clib_host_to_net_u16 (2152);
276  udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_GTPU);
277 
278  /* GTPU header */
280  gtpu->type = GTPU_TYPE_GTPU;
281  gtpu->teid = clib_host_to_net_u32 (t->teid);
282 
283  t->rewrite = r.rw;
284  /* Now only support 8-byte gtpu header. TBD */
285  _vec_len (t->rewrite) = sizeof (ip4_gtpu_header_t) - 4;
286 
287  return;
288 }
289 
290 static bool
291 gtpu_decap_next_is_valid (gtpu_main_t * gtm, u32 is_ip6, u32 decap_next_index)
292 {
293  vlib_main_t *vm = gtm->vlib_main;
294  u32 input_idx = (!is_ip6) ? gtpu4_input_node.index : gtpu6_input_node.index;
295  vlib_node_runtime_t *r = vlib_node_get_runtime (vm, input_idx);
296 
297  return decap_next_index < r->n_next_nodes;
298 }
299 
300 static uword
301 vtep_addr_ref (ip46_address_t * ip)
302 {
303  uword *vtep = ip46_address_is_ip4 (ip) ?
304  hash_get (gtpu_main.vtep4, ip->ip4.as_u32) :
305  hash_get_mem (gtpu_main.vtep6, &ip->ip6);
306  if (vtep)
307  return ++(*vtep);
308  ip46_address_is_ip4 (ip) ?
309  hash_set (gtpu_main.vtep4, ip->ip4.as_u32, 1) :
310  hash_set_mem_alloc (&gtpu_main.vtep6, &ip->ip6, 1);
311  return 1;
312 }
313 
314 static uword
315 vtep_addr_unref (ip46_address_t * ip)
316 {
317  uword *vtep = ip46_address_is_ip4 (ip) ?
318  hash_get (gtpu_main.vtep4, ip->ip4.as_u32) :
319  hash_get_mem (gtpu_main.vtep6, &ip->ip6);
320  ASSERT (vtep);
321  if (--(*vtep) != 0)
322  return *vtep;
323  ip46_address_is_ip4 (ip) ?
324  hash_unset (gtpu_main.vtep4, ip->ip4.as_u32) :
325  hash_unset_mem_free (&gtpu_main.vtep6, &ip->ip6);
326  return 0;
327 }
328 
329 typedef CLIB_PACKED (union
330  {
331  struct
332  {
333  fib_node_index_t mfib_entry_index;
334  adj_index_t mcast_adj_index;
335  }; u64 as_u64;
336  }) mcast_shared_t;
337 
338 static inline mcast_shared_t
339 mcast_shared_get (ip46_address_t * ip)
340 {
342  uword *p = hash_get_mem (gtpu_main.mcast_shared, ip);
343  ASSERT (p);
344  return (mcast_shared_t)
345  {
346  .as_u64 = *p};
347 }
348 
349 static inline void
350 mcast_shared_add (ip46_address_t * dst, fib_node_index_t mfei, adj_index_t ai)
351 {
352  mcast_shared_t new_ep = {
353  .mcast_adj_index = ai,
354  .mfib_entry_index = mfei,
355  };
356 
357  hash_set_mem_alloc (&gtpu_main.mcast_shared, dst, new_ep.as_u64);
358 }
359 
360 static inline void
361 mcast_shared_remove (ip46_address_t * dst)
362 {
363  mcast_shared_t ep = mcast_shared_get (dst);
364 
365  adj_unlock (ep.mcast_adj_index);
366  mfib_table_entry_delete_index (ep.mfib_entry_index, MFIB_SOURCE_GTPU);
367 
368  hash_unset_mem_free (&gtpu_main.mcast_shared, dst);
369 }
370 
372  (vnet_gtpu_add_del_tunnel_args_t * a, u32 * sw_if_indexp)
373 {
374  gtpu_main_t *gtm = &gtpu_main;
375  gtpu_tunnel_t *t = 0;
376  vnet_main_t *vnm = gtm->vnet_main;
377  uword *p;
378  u32 hw_if_index = ~0;
379  u32 sw_if_index = ~0;
380  gtpu4_tunnel_key_t key4;
381  gtpu6_tunnel_key_t key6;
382  u32 is_ip6 = a->is_ip6;
383 
384  if (!is_ip6)
385  {
386  key4.src = a->dst.ip4.as_u32; /* decap src in key is encap dst in config */
387  key4.teid = clib_host_to_net_u32 (a->teid);
388  p = hash_get (gtm->gtpu4_tunnel_by_key, key4.as_u64);
389  }
390  else
391  {
392  key6.src = a->dst.ip6;
393  key6.teid = clib_host_to_net_u32 (a->teid);
394  p = hash_get_mem (gtm->gtpu6_tunnel_by_key, &key6);
395  }
396 
397  if (a->is_add)
398  {
399  l2input_main_t *l2im = &l2input_main;
400 
401  /* adding a tunnel: tunnel must not already exist */
402  if (p)
403  return VNET_API_ERROR_TUNNEL_EXIST;
404 
405  /*if not set explicitly, default to l2 */
406  if (a->decap_next_index == ~0)
407  a->decap_next_index = GTPU_INPUT_NEXT_L2_INPUT;
408  if (!gtpu_decap_next_is_valid (gtm, is_ip6, a->decap_next_index))
409  return VNET_API_ERROR_INVALID_DECAP_NEXT;
410 
412  clib_memset (t, 0, sizeof (*t));
413 
414  /* copy from arg structure */
415 #define _(x) t->x = a->x;
417 #undef _
418 
419  ip_udp_gtpu_rewrite (t, is_ip6);
420 
421  /* copy the key */
422  if (is_ip6)
424  t - gtm->tunnels);
425  else
426  hash_set (gtm->gtpu4_tunnel_by_key, key4.as_u64, t - gtm->tunnels);
427 
430  {
432  hw_if_index = gtm->free_gtpu_tunnel_hw_if_indices
434  _vec_len (gtm->free_gtpu_tunnel_hw_if_indices) -= 1;
435 
436  hi = vnet_get_hw_interface (vnm, hw_if_index);
437  hi->dev_instance = t - gtm->tunnels;
438  hi->hw_instance = hi->dev_instance;
439 
440  /* clear old stats of freed tunnel before reuse */
441  sw_if_index = hi->sw_if_index;
445  sw_if_index);
448  sw_if_index);
451  sw_if_index);
453  }
454  else
455  {
456  hw_if_index = vnet_register_interface
457  (vnm, gtpu_device_class.index, t - gtm->tunnels,
458  gtpu_hw_class.index, t - gtm->tunnels);
459  hi = vnet_get_hw_interface (vnm, hw_if_index);
460  }
461 
462  /* Set gtpu tunnel output node */
463  u32 encap_index = !is_ip6 ?
464  gtpu4_encap_node.index : gtpu6_encap_node.index;
465  vnet_set_interface_output_node (vnm, hw_if_index, encap_index);
466 
467  t->hw_if_index = hw_if_index;
468  t->sw_if_index = sw_if_index = hi->sw_if_index;
469 
471  ~0);
473 
474  /* setup l2 input config with l2 feature and bd 0 to drop packet */
475  vec_validate (l2im->configs, sw_if_index);
476  l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
477  l2im->configs[sw_if_index].bd_index = 0;
478 
479  vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
481  vnet_sw_interface_set_flags (vnm, sw_if_index,
483 
484  fib_node_init (&t->node, gtm->fib_node_type);
485  fib_prefix_t tun_dst_pfx;
487 
488  fib_prefix_from_ip46_addr (&t->dst, &tun_dst_pfx);
489  if (!ip46_address_is_multicast (&t->dst))
490  {
491  /* Unicast tunnel -
492  * source the FIB entry for the tunnel's destination
493  * and become a child thereof. The tunnel will then get poked
494  * when the forwarding for the entry updates, and the tunnel can
495  * re-stack accordingly
496  */
497  vtep_addr_ref (&t->src);
499  (t->encap_fib_index, &tun_dst_pfx, FIB_SOURCE_RR,
502  (t->fib_entry_index, gtm->fib_node_type, t - gtm->tunnels);
504  }
505  else
506  {
507  /* Multicast tunnel -
508  * as the same mcast group can be used for multiple mcast tunnels
509  * with different VNIs, create the output adjacency only if
510  * it does not already exist
511  */
512  fib_protocol_t fp = fib_ip_proto (is_ip6);
513 
514  if (vtep_addr_ref (&t->dst) == 1)
515  {
516  fib_node_index_t mfei;
517  adj_index_t ai;
518  fib_route_path_t path = {
519  .frp_proto = fib_proto_to_dpo (fp),
520  .frp_addr = zero_addr,
521  .frp_sw_if_index = 0xffffffff,
522  .frp_fib_index = ~0,
523  .frp_weight = 0,
524  .frp_flags = FIB_ROUTE_PATH_LOCAL,
525  };
526  const mfib_prefix_t mpfx = {
527  .fp_proto = fp,
528  .fp_len = (is_ip6 ? 128 : 32),
529  .fp_grp_addr = tun_dst_pfx.fp_addr,
530  };
531 
532  /*
533  * Setup the (*,G) to receive traffic on the mcast group
534  * - the forwarding interface is for-us
535  * - the accepting interface is that from the API
536  */
538  &mpfx,
540  &path, MFIB_ITF_FLAG_FORWARD);
541 
545  &mpfx,
547  &path,
549 
550  /*
551  * Create the mcast adjacency to send traffic to the group
552  */
553  ai = adj_mcast_add_or_lock (fp,
554  fib_proto_to_link (fp),
555  a->mcast_sw_if_index);
556 
557  /*
558  * create a new end-point
559  */
560  mcast_shared_add (&t->dst, mfei, ai);
561  }
562 
563  dpo_id_t dpo = DPO_INVALID;
564  mcast_shared_t ep = mcast_shared_get (&t->dst);
565 
566  /* Stack shared mcast dst mac addr rewrite on encap */
568  fib_proto_to_dpo (fp), ep.mcast_adj_index);
569 
570  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
571 
572  dpo_reset (&dpo);
573  flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
574  }
575 
576  vnet_get_sw_interface (vnet_get_main (), sw_if_index)->flood_class =
577  flood_class;
578  }
579  else
580  {
581  /* deleting a tunnel: tunnel must exist */
582  if (!p)
583  return VNET_API_ERROR_NO_SUCH_ENTRY;
584 
585  t = pool_elt_at_index (gtm->tunnels, p[0]);
586  sw_if_index = t->sw_if_index;
587 
588  vnet_sw_interface_set_flags (vnm, t->sw_if_index, 0 /* down */ );
591 
592  /* make sure tunnel is removed from l2 bd or xconnect */
593  set_int_l2_mode (gtm->vlib_main, vnm, MODE_L3, t->sw_if_index, 0,
594  L2_BD_PORT_TYPE_NORMAL, 0, 0);
596 
598 
599  if (!is_ip6)
600  hash_unset (gtm->gtpu4_tunnel_by_key, key4.as_u64);
601  else
603 
604  if (!ip46_address_is_multicast (&t->dst))
605  {
606  vtep_addr_unref (&t->src);
609  }
610  else if (vtep_addr_unref (&t->dst) == 0)
611  {
612  mcast_shared_remove (&t->dst);
613  }
614 
615  fib_node_deinit (&t->node);
616  vec_free (t->rewrite);
617  pool_put (gtm->tunnels, t);
618  }
619 
620  if (sw_if_indexp)
621  *sw_if_indexp = sw_if_index;
622 
623  return 0;
624 }
625 
626 static uword
627 get_decap_next_for_node (u32 node_index, u32 ipv4_set)
628 {
629  gtpu_main_t *gtm = &gtpu_main;
630  vlib_main_t *vm = gtm->vlib_main;
631  uword input_node = (ipv4_set) ? gtpu4_input_node.index :
632  gtpu6_input_node.index;
633 
634  return vlib_node_add_next (vm, input_node, node_index);
635 }
636 
637 static uword
638 unformat_decap_next (unformat_input_t * input, va_list * args)
639 {
640  u32 *result = va_arg (*args, u32 *);
641  u32 ipv4_set = va_arg (*args, int);
642  gtpu_main_t *gtm = &gtpu_main;
643  vlib_main_t *vm = gtm->vlib_main;
644  u32 node_index;
645  u32 tmp;
646 
647  if (unformat (input, "l2"))
648  *result = GTPU_INPUT_NEXT_L2_INPUT;
649  else if (unformat (input, "ip4"))
650  *result = GTPU_INPUT_NEXT_IP4_INPUT;
651  else if (unformat (input, "ip6"))
652  *result = GTPU_INPUT_NEXT_IP6_INPUT;
653  else if (unformat (input, "node %U", unformat_vlib_node, vm, &node_index))
654  *result = get_decap_next_for_node (node_index, ipv4_set);
655  else if (unformat (input, "%d", &tmp))
656  *result = tmp;
657  else
658  return 0;
659 
660  return 1;
661 }
662 
663 static clib_error_t *
665  unformat_input_t * input,
666  vlib_cli_command_t * cmd)
667 {
668  unformat_input_t _line_input, *line_input = &_line_input;
669  ip46_address_t src, dst;
670  u8 is_add = 1;
671  u8 src_set = 0;
672  u8 dst_set = 0;
673  u8 grp_set = 0;
674  u8 ipv4_set = 0;
675  u8 ipv6_set = 0;
676  u32 encap_fib_index = 0;
677  u32 mcast_sw_if_index = ~0;
678  u32 decap_next_index = GTPU_INPUT_NEXT_L2_INPUT;
679  u32 teid = 0;
680  u32 tmp;
681  int rv;
682  vnet_gtpu_add_del_tunnel_args_t _a, *a = &_a;
683  u32 tunnel_sw_if_index;
684  clib_error_t *error = NULL;
685 
686  /* Cant "universally zero init" (={0}) due to GCC bug 53119 */
687  clib_memset (&src, 0, sizeof src);
688  clib_memset (&dst, 0, sizeof dst);
689 
690  /* Get a line of input. */
691  if (!unformat_user (input, unformat_line_input, line_input))
692  return 0;
693 
694  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
695  {
696  if (unformat (line_input, "del"))
697  {
698  is_add = 0;
699  }
700  else if (unformat (line_input, "src %U",
701  unformat_ip4_address, &src.ip4))
702  {
703  src_set = 1;
704  ipv4_set = 1;
705  }
706  else if (unformat (line_input, "dst %U",
707  unformat_ip4_address, &dst.ip4))
708  {
709  dst_set = 1;
710  ipv4_set = 1;
711  }
712  else if (unformat (line_input, "src %U",
713  unformat_ip6_address, &src.ip6))
714  {
715  src_set = 1;
716  ipv6_set = 1;
717  }
718  else if (unformat (line_input, "dst %U",
719  unformat_ip6_address, &dst.ip6))
720  {
721  dst_set = 1;
722  ipv6_set = 1;
723  }
724  else if (unformat (line_input, "group %U %U",
725  unformat_ip4_address, &dst.ip4,
727  vnet_get_main (), &mcast_sw_if_index))
728  {
729  grp_set = dst_set = 1;
730  ipv4_set = 1;
731  }
732  else if (unformat (line_input, "group %U %U",
733  unformat_ip6_address, &dst.ip6,
735  vnet_get_main (), &mcast_sw_if_index))
736  {
737  grp_set = dst_set = 1;
738  ipv6_set = 1;
739  }
740  else if (unformat (line_input, "encap-vrf-id %d", &tmp))
741  {
742  encap_fib_index = fib_table_find (fib_ip_proto (ipv6_set), tmp);
743  if (encap_fib_index == ~0)
744  {
745  error =
746  clib_error_return (0, "nonexistent encap-vrf-id %d", tmp);
747  goto done;
748  }
749  }
750  else if (unformat (line_input, "decap-next %U", unformat_decap_next,
751  &decap_next_index, ipv4_set))
752  ;
753  else if (unformat (line_input, "teid %d", &teid))
754  ;
755  else
756  {
757  error = clib_error_return (0, "parse error: '%U'",
758  format_unformat_error, line_input);
759  goto done;
760  }
761  }
762 
763  if (src_set == 0)
764  {
765  error = clib_error_return (0, "tunnel src address not specified");
766  goto done;
767  }
768 
769  if (dst_set == 0)
770  {
771  error = clib_error_return (0, "tunnel dst address not specified");
772  goto done;
773  }
774 
775  if (grp_set && !ip46_address_is_multicast (&dst))
776  {
777  error = clib_error_return (0, "tunnel group address not multicast");
778  goto done;
779  }
780 
781  if (grp_set == 0 && ip46_address_is_multicast (&dst))
782  {
783  error = clib_error_return (0, "dst address must be unicast");
784  goto done;
785  }
786 
787  if (grp_set && mcast_sw_if_index == ~0)
788  {
789  error = clib_error_return (0, "tunnel nonexistent multicast device");
790  goto done;
791  }
792 
793  if (ipv4_set && ipv6_set)
794  {
795  error = clib_error_return (0, "both IPv4 and IPv6 addresses specified");
796  goto done;
797  }
798 
799  if (ip46_address_cmp (&src, &dst) == 0)
800  {
801  error = clib_error_return (0, "src and dst addresses are identical");
802  goto done;
803  }
804 
805  if (decap_next_index == ~0)
806  {
807  error = clib_error_return (0, "next node not found");
808  goto done;
809  }
810 
811  clib_memset (a, 0, sizeof (*a));
812 
813  a->is_add = is_add;
814  a->is_ip6 = ipv6_set;
815 
816 #define _(x) a->x = x;
818 #undef _
819 
820  rv = vnet_gtpu_add_del_tunnel (a, &tunnel_sw_if_index);
821 
822  switch (rv)
823  {
824  case 0:
825  if (is_add)
827  vnet_get_main (), tunnel_sw_if_index);
828  break;
829 
830  case VNET_API_ERROR_TUNNEL_EXIST:
831  error = clib_error_return (0, "tunnel already exists...");
832  goto done;
833 
834  case VNET_API_ERROR_NO_SUCH_ENTRY:
835  error = clib_error_return (0, "tunnel does not exist...");
836  goto done;
837 
838  default:
839  error = clib_error_return
840  (0, "vnet_gtpu_add_del_tunnel returned %d", rv);
841  goto done;
842  }
843 
844 done:
845  unformat_free (line_input);
846 
847  return error;
848 }
849 
850 /*?
851  * Add or delete a GTPU Tunnel.
852  *
853  * GTPU provides the features needed to allow L2 bridge domains (BDs)
854  * to span multiple servers. This is done by building an L2 overlay on
855  * top of an L3 network underlay using GTPU tunnels.
856  *
857  * This makes it possible for servers to be co-located in the same data
858  * center or be separated geographically as long as they are reachable
859  * through the underlay L3 network.
860  *
861  * You can refer to this kind of L2 overlay bridge domain as a GTPU
862  * (Virtual eXtensible VLAN) segment.
863  *
864  * @cliexpar
865  * Example of how to create a GTPU Tunnel:
866  * @cliexcmd{create gtpu tunnel src 10.0.3.1 dst 10.0.3.3 teid 13 encap-vrf-id 7}
867  * Example of how to delete a GTPU Tunnel:
868  * @cliexcmd{create gtpu tunnel src 10.0.3.1 dst 10.0.3.3 teid 13 del}
869  ?*/
870 /* *INDENT-OFF* */
871 VLIB_CLI_COMMAND (create_gtpu_tunnel_command, static) = {
872  .path = "create gtpu tunnel",
873  .short_help =
874  "create gtpu tunnel src <local-vtep-addr>"
875  " {dst <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} teid <nn>"
876  " [encap-vrf-id <nn>] [decap-next [l2|ip4|ip6|node <name>]] [del]",
877  .function = gtpu_add_del_tunnel_command_fn,
878 };
879 /* *INDENT-ON* */
880 
881 static clib_error_t *
883  unformat_input_t * input,
884  vlib_cli_command_t * cmd)
885 {
886  gtpu_main_t *gtm = &gtpu_main;
887  gtpu_tunnel_t *t;
888 
889  if (pool_elts (gtm->tunnels) == 0)
890  vlib_cli_output (vm, "No gtpu tunnels configured...");
891 
892  pool_foreach (t, gtm->tunnels, (
893  {
894  vlib_cli_output (vm, "%U",
895  format_gtpu_tunnel, t);
896  }
897  ));
898 
899  return 0;
900 }
901 
902 /*?
903  * Display all the GTPU Tunnel entries.
904  *
905  * @cliexpar
906  * Example of how to display the GTPU Tunnel entries:
907  * @cliexstart{show gtpu tunnel}
908  * [0] src 10.0.3.1 dst 10.0.3.3 teid 13 encap_fib_index 0 sw_if_index 5 decap_next l2
909  * @cliexend
910  ?*/
911 /* *INDENT-OFF* */
912 VLIB_CLI_COMMAND (show_gtpu_tunnel_command, static) = {
913  .path = "show gtpu tunnel",
914  .short_help = "show gtpu tunnel",
915  .function = show_gtpu_tunnel_command_fn,
916 };
917 /* *INDENT-ON* */
918 
919 void
921 {
922  if (is_ip6)
923  vnet_feature_enable_disable ("ip6-unicast", "ip6-gtpu-bypass",
924  sw_if_index, is_enable, 0, 0);
925  else
926  vnet_feature_enable_disable ("ip4-unicast", "ip4-gtpu-bypass",
927  sw_if_index, is_enable, 0, 0);
928 }
929 
930 static clib_error_t *
932  unformat_input_t * input, vlib_cli_command_t * cmd)
933 {
934  unformat_input_t _line_input, *line_input = &_line_input;
935  vnet_main_t *vnm = vnet_get_main ();
936  clib_error_t *error = 0;
937  u32 sw_if_index, is_enable;
938 
939  sw_if_index = ~0;
940  is_enable = 1;
941 
942  if (!unformat_user (input, unformat_line_input, line_input))
943  return 0;
944 
945  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
946  {
947  if (unformat_user
948  (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
949  ;
950  else if (unformat (line_input, "del"))
951  is_enable = 0;
952  else
953  {
954  error = unformat_parse_error (line_input);
955  goto done;
956  }
957  }
958 
959  if (~0 == sw_if_index)
960  {
961  error = clib_error_return (0, "unknown interface `%U'",
962  format_unformat_error, line_input);
963  goto done;
964  }
965 
966  vnet_int_gtpu_bypass_mode (sw_if_index, is_ip6, is_enable);
967 
968 done:
969  unformat_free (line_input);
970 
971  return error;
972 }
973 
974 static clib_error_t *
976  unformat_input_t * input, vlib_cli_command_t * cmd)
977 {
978  return set_ip_gtpu_bypass (0, input, cmd);
979 }
980 
981 /*?
982  * This command adds the 'ip4-gtpu-bypass' graph node for a given interface.
983  * By adding the IPv4 gtpu-bypass graph node to an interface, the node checks
984  * for and validate input gtpu packet and bypass ip4-lookup, ip4-local,
985  * ip4-udp-lookup nodes to speedup gtpu packet forwarding. This node will
986  * cause extra overhead to for non-gtpu packets which is kept at a minimum.
987  *
988  * @cliexpar
989  * @parblock
990  * Example of graph node before ip4-gtpu-bypass is enabled:
991  * @cliexstart{show vlib graph ip4-gtpu-bypass}
992  * Name Next Previous
993  * ip4-gtpu-bypass error-drop [0]
994  * gtpu4-input [1]
995  * ip4-lookup [2]
996  * @cliexend
997  *
998  * Example of how to enable ip4-gtpu-bypass on an interface:
999  * @cliexcmd{set interface ip gtpu-bypass GigabitEthernet2/0/0}
1000  *
1001  * Example of graph node after ip4-gtpu-bypass is enabled:
1002  * @cliexstart{show vlib graph ip4-gtpu-bypass}
1003  * Name Next Previous
1004  * ip4-gtpu-bypass error-drop [0] ip4-input
1005  * gtpu4-input [1] ip4-input-no-checksum
1006  * ip4-lookup [2]
1007  * @cliexend
1008  *
1009  * Example of how to display the feature enabled on an interface:
1010  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1011  * IP feature paths configured on GigabitEthernet2/0/0...
1012  * ...
1013  * ipv4 unicast:
1014  * ip4-gtpu-bypass
1015  * ip4-lookup
1016  * ...
1017  * @cliexend
1018  *
1019  * Example of how to disable ip4-gtpu-bypass on an interface:
1020  * @cliexcmd{set interface ip gtpu-bypass GigabitEthernet2/0/0 del}
1021  * @endparblock
1022 ?*/
1023 /* *INDENT-OFF* */
1024 VLIB_CLI_COMMAND (set_interface_ip_gtpu_bypass_command, static) = {
1025  .path = "set interface ip gtpu-bypass",
1026  .function = set_ip4_gtpu_bypass,
1027  .short_help = "set interface ip gtpu-bypass <interface> [del]",
1028 };
1029 /* *INDENT-ON* */
1030 
1031 static clib_error_t *
1033  unformat_input_t * input, vlib_cli_command_t * cmd)
1034 {
1035  return set_ip_gtpu_bypass (1, input, cmd);
1036 }
1037 
1038 /*?
1039  * This command adds the 'ip6-gtpu-bypass' graph node for a given interface.
1040  * By adding the IPv6 gtpu-bypass graph node to an interface, the node checks
1041  * for and validate input gtpu packet and bypass ip6-lookup, ip6-local,
1042  * ip6-udp-lookup nodes to speedup gtpu packet forwarding. This node will
1043  * cause extra overhead to for non-gtpu packets which is kept at a minimum.
1044  *
1045  * @cliexpar
1046  * @parblock
1047  * Example of graph node before ip6-gtpu-bypass is enabled:
1048  * @cliexstart{show vlib graph ip6-gtpu-bypass}
1049  * Name Next Previous
1050  * ip6-gtpu-bypass error-drop [0]
1051  * gtpu6-input [1]
1052  * ip6-lookup [2]
1053  * @cliexend
1054  *
1055  * Example of how to enable ip6-gtpu-bypass on an interface:
1056  * @cliexcmd{set interface ip6 gtpu-bypass GigabitEthernet2/0/0}
1057  *
1058  * Example of graph node after ip6-gtpu-bypass is enabled:
1059  * @cliexstart{show vlib graph ip6-gtpu-bypass}
1060  * Name Next Previous
1061  * ip6-gtpu-bypass error-drop [0] ip6-input
1062  * gtpu6-input [1] ip4-input-no-checksum
1063  * ip6-lookup [2]
1064  * @cliexend
1065  *
1066  * Example of how to display the feature enabled on an interface:
1067  * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1068  * IP feature paths configured on GigabitEthernet2/0/0...
1069  * ...
1070  * ipv6 unicast:
1071  * ip6-gtpu-bypass
1072  * ip6-lookup
1073  * ...
1074  * @cliexend
1075  *
1076  * Example of how to disable ip6-gtpu-bypass on an interface:
1077  * @cliexcmd{set interface ip6 gtpu-bypass GigabitEthernet2/0/0 del}
1078  * @endparblock
1079 ?*/
1080 /* *INDENT-OFF* */
1081 VLIB_CLI_COMMAND (set_interface_ip6_gtpu_bypass_command, static) = {
1082  .path = "set interface ip6 gtpu-bypass",
1083  .function = set_ip6_gtpu_bypass,
1084  .short_help = "set interface ip gtpu-bypass <interface> [del]",
1085 };
1086 /* *INDENT-ON* */
1087 
1088 clib_error_t *
1090 {
1091  gtpu_main_t *gtm = &gtpu_main;
1092 
1093  gtm->vnet_main = vnet_get_main ();
1094  gtm->vlib_main = vm;
1095 
1096  /* initialize the ip6 hash */
1098  sizeof (gtpu6_tunnel_key_t),
1099  sizeof (uword));
1100  gtm->vtep6 = hash_create_mem (0, sizeof (ip6_address_t), sizeof (uword));
1101  gtm->mcast_shared = hash_create_mem (0,
1102  sizeof (ip46_address_t),
1103  sizeof (mcast_shared_t));
1104 
1105  udp_register_dst_port (vm, UDP_DST_PORT_GTPU,
1106  gtpu4_input_node.index, /* is_ip4 */ 1);
1107  udp_register_dst_port (vm, UDP_DST_PORT_GTPU6,
1108  gtpu6_input_node.index, /* is_ip4 */ 0);
1109 
1110  gtm->fib_node_type = fib_node_register_new_type (&gtpu_vft);
1111 
1112  return 0;
1113 }
1114 
1116 
1117 /* *INDENT-OFF* */
1118 VLIB_PLUGIN_REGISTER () = {
1119  .version = VPP_BUILD_VER,
1120  .description = "GPRS Tunnelling Protocol, User Data (GTPv1-U)",
1121 };
1122 /* *INDENT-ON* */
1123 
1124 /*
1125  * fd.io coding-style-patch-verification: ON
1126  *
1127  * Local Variables:
1128  * eval: (c-set-style "gnu")
1129  * End:
1130  */
vlib_main_t * vlib_main
Definition: gtpu.h:232
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:439
vlib_node_registration_t gtpu4_encap_node
(constructor) VLIB_REGISTER_NODE (gtpu4_encap_node)
Definition: gtpu_encap.c:662
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 ...
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
clib_error_t * gtpu_init(vlib_main_t *vm)
Definition: gtpu.c:1089
Recursive resolution source.
Definition: fib_entry.h:125
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
#define CLIB_UNUSED(x)
Definition: clib.h:82
vnet_main_t * vnet_main
Definition: gtpu.h:233
#define hash_unset(h, key)
Definition: hash.h:261
static uword get_decap_next_for_node(u32 node_index, u32 ipv4_set)
Definition: gtpu.c:627
A representation of a path as described by a route producer.
Definition: fib_types.h:476
ip4_address_t src_address
Definition: ip4_packet.h:170
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
u32 teid
Definition: gtpu.h:59
u32 teid
Definition: gtpu.h:138
#define GTPU_TYPE_GTPU
Definition: gtpu.h:77
vnet_interface_main_t interface_main
Definition: vnet.h:56
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:565
unsigned long u64
Definition: types.h:89
u32 * tunnel_index_by_sw_if_index
Definition: gtpu.h:221
#define NULL
Definition: clib.h:58
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
fib_node_type_t fib_node_type
Node type for registering to fib changes.
Definition: gtpu.h:226
enum fib_node_back_walk_rc_t_ fib_node_back_walk_rc_t
Return code from a back walk function.
#define foreach_copy_field
Definition: gtpu.c:219
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
static uword vtep_addr_unref(ip46_address_t *ip)
Definition: gtpu.c:315
u32 mcast_sw_if_index
Definition: vxlan_gbp.api:40
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:576
#define GTPU_PT_GTP
Definition: gtpu.h:76
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:522
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
VNET_FEATURE_INIT(ip4_gtpu_bypass, static)
static void gtpu_tunnel_restack_dpo(gtpu_tunnel_t *t)
Definition: gtpu.c:150
#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:481
unformat_function_t unformat_vnet_sw_interface
vl_api_ip4_address_t dst
Definition: ipsec_gre.api:39
#define vec_validate_aligned(V, I, A)
Make sure vector is long enough for given index (no header, specified alignment)
Definition: vec.h:450
uword * vtep4
Definition: gtpu.h:211
typedef CLIB_PACKED(union { struct { fib_node_index_t mfib_entry_index;adj_index_t mcast_adj_index;};u64 as_u64;})
Definition: gtpu.c:329
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:1092
unsigned char u8
Definition: types.h:56
fib_node_type_t fib_node_register_new_type(const fib_node_vft_t *vft)
Create a new FIB node type and Register the function table for it.
Definition: fib_node.c:80
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 u8 * format_decap_next(u8 *s, va_list *args)
Definition: gtpu.c:64
static fib_node_t * gtpu_tunnel_fib_node_get(fib_node_index_t index)
Function definition to get a FIB node from its index.
Definition: gtpu.c:185
u8 * format_gtpu_encap_trace(u8 *s, va_list *args)
Definition: gtpu.c:51
VNET_DEVICE_CLASS(gtpu_device_class, static)
static u8 * format_gtpu_name(u8 *s, va_list *args)
Definition: gtpu.c:106
vnet_flood_class_t flood_class
Definition: interface.h:709
VNET_HW_INTERFACE_CLASS(gtpu_hw_class)
static gtpu_tunnel_t * gtpu_tunnel_from_fib_node(fib_node_t *node)
Definition: gtpu.c:164
dpo_id_t next_dpo
Definition: gtpu.h:135
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:493
unformat_function_t unformat_ip4_address
Definition: format.h:70
u32 frp_sw_if_index
The interface.
Definition: fib_types.h:511
int vnet_gtpu_add_del_tunnel(vnet_gtpu_add_del_tunnel_args_t *a, u32 *sw_if_indexp)
Definition: gtpu.c:372
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
ip46_address_t src
Definition: gtpu.h:141
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
ip4_address_t dst_address
Definition: ip4_packet.h:170
vlib_combined_counter_main_t * combined_sw_if_counters
Definition: interface.h:824
Aggregrate type for a prefix.
Definition: fib_types.h:203
static clib_error_t * show_gtpu_tunnel_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: gtpu.c:882
#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
unsigned int u32
Definition: types.h:88
u32 fib_table_find(fib_protocol_t proto, u32 table_id)
Get the index of the FIB for a Table-ID.
Definition: fib_table.c:1064
gtpu_main_t gtpu_main
Definition: gtpu.c:35
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
static u8 * format_gtpu_header_with_length(u8 *s, va_list *args)
Definition: gtpu.c:132
u8 * format_gtpu_tunnel(u8 *s, va_list *args)
Definition: gtpu.c:85
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
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:514
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:285
u32 decap_next_index
Definition: gtpu.h:148
ip46_address_t fp_addr
The address type is not deriveable from the fp_addr member.
Definition: fib_types.h:226
uword * vtep6
Definition: gtpu.h:212
long ctx[MAX_CONNS]
Definition: main.c:144
struct _unformat_input_t unformat_input_t
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:286
#define GTPU_V1_VER
Definition: gtpu.h:74
#define PREDICT_FALSE(x)
Definition: clib.h:111
vnet_sw_interface_flags_t flags
Definition: interface.h:684
vlib_simple_counter_main_t * sw_if_counters
Definition: interface.h:823
static uword vtep_addr_ref(ip46_address_t *ip)
Definition: gtpu.c:301
vl_api_ip4_address_t src
Definition: ipsec_gre.api:38
static fib_node_back_walk_rc_t gtpu_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 GTPU DIP to encap no...
Definition: gtpu.c:175
An node in the FIB graph.
Definition: fib_node.h:291
static clib_error_t * gtpu_add_del_tunnel_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: gtpu.c:664
ip46_address_t dst
Definition: gtpu.h:142
u8 len
Definition: ip_types.api:49
#define ip46_address_is_ip4(ip46)
Definition: ip6_packet.h:88
unformat_function_t unformat_ip6_address
Definition: format.h:91
#define pool_get_aligned(P, E, A)
Allocate an object E from a pool P with alignment A.
Definition: pool.h:230
u8 type
Definition: gtpu.h:57
static void ip_udp_gtpu_rewrite(gtpu_tunnel_t *t, bool is_ip6)
Definition: gtpu.c:228
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
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
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
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:341
vnet_flood_class_t
Definition: interface.h:625
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:279
static void vnet_interface_counter_unlock(vnet_interface_main_t *im)
Definition: interface.h:855
static void mcast_shared_remove(ip46_address_t *dst)
Definition: gtpu.c:361
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:30
u32 sw_if_index
Definition: gtpu.h:154
u32 adj_index_t
An index for adjacencies.
Definition: adj_types.h:30
void fib_prefix_from_ip46_addr(const ip46_address_t *addr, fib_prefix_t *pfx)
Host prefix from ip.
Definition: fib_types.c:80
void dpo_set(dpo_id_t *dpo, dpo_type_t type, dpo_proto_t proto, index_t index)
Set/create a DPO ID The DPO will be locked.
Definition: dpo.c:185
u32 sibling_index
The tunnel is a child of the FIB entry for its destination.
Definition: gtpu.h:175
Aggregrate type for a prefix.
Definition: mfib_types.h:24
static bool gtpu_decap_next_is_valid(gtpu_main_t *gtm, u32 is_ip6, u32 decap_next_index)
Definition: gtpu.c:291
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:1557
Context passed between object during a back walk.
Definition: fib_node.h:204
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:155
u32 * free_gtpu_tunnel_hw_if_indices
Definition: gtpu.h:218
static void vnet_interface_counter_lock(vnet_interface_main_t *im)
Definition: interface.h:847
static clib_error_t * set_ip4_gtpu_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: gtpu.c:975
#define ASSERT(truth)
fib_node_index_t fib_entry_index
Definition: gtpu.h:166
fib_node_t node
Linkage into the FIB object graph.
Definition: gtpu.h:160
u8 is_add
Definition: ipsec_gre.api:36
u32 hw_if_index
Definition: gtpu.h:155
static void gtpu_tunnel_last_lock_gone(fib_node_t *node)
Function definition to inform the FIB node that its last lock has gone.
Definition: gtpu.c:199
u32 set_int_l2_mode(vlib_main_t *vm, vnet_main_t *vnet_main, u32 mode, u32 sw_if_index, u32 bd_index, l2_bd_port_type_t port_type, u32 shg, u32 xc_sw_if_index)
Set the subinterface to run in l2 or l3 mode.
Definition: l2_input.c:589
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:577
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:139
void vnet_int_gtpu_bypass_mode(u32 sw_if_index, u8 is_ip6, u8 is_enable)
Definition: gtpu.c:920
u32 encap_fib_index
Definition: gtpu.h:151
dpo_proto_t fib_proto_to_dpo(fib_protocol_t fib_proto)
Definition: fib_types.c:244
#define VNET_FEATURES(...)
Definition: feature.h:435
uword * gtpu4_tunnel_by_key
Definition: gtpu.h:206
u32 tunnel_index
Definition: gtpu.h:261
#define unformat_parse_error(input)
Definition: format.h:268
vlib_node_registration_t gtpu6_input_node
(constructor) VLIB_REGISTER_NODE (gtpu6_input_node)
Definition: gtpu_decap.c:828
static void mcast_shared_add(ip46_address_t *dst, fib_node_index_t mfei, adj_index_t ai)
Definition: gtpu.c:350
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
l2input_main_t l2input_main
Definition: l2_input.c:128
uword * mcast_shared
Definition: gtpu.h:215
index_t dpoi_index
the index of objects of that type
Definition: dpo.h:184
A for-us/local path.
Definition: fib_types.h:338
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
static fib_protocol_t fib_ip_proto(bool is_ip6)
Convert from boolean is_ip6 to FIB protocol.
Definition: fib_types.h:80
uword * gtpu6_tunnel_by_key
Definition: gtpu.h:207
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
static clib_error_t * set_ip6_gtpu_bypass(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: gtpu.c:1032
#define DPO_INVALID
An initialiser for DPOs declared on the stack.
Definition: dpo.h:195
vlib_node_registration_t gtpu6_encap_node
(constructor) VLIB_REGISTER_NODE (gtpu6_encap_node)
Definition: gtpu_encap.c:677
a point 2 point interface
Definition: interface.h:357
unformat_function_t unformat_vlib_node
Definition: node_funcs.h:1147
Bits Octets 8 7 6 5 4 3 2 1 1 Version PT (*) E S PN 2 Message Type 3 Length (1st Octet) 4 Length...
Definition: gtpu.h:54
#define hash_get_mem(h, key)
Definition: hash.h:269
static void hash_unset_mem_free(uword **h, void *key)
Definition: hash.h:295
static clib_error_t * set_ip_gtpu_bypass(u32 is_ip6, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: gtpu.c:931
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
gtpu_tunnel_t * tunnels
Definition: gtpu.h:203
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
u8 * rewrite
Definition: gtpu.h:132
void dpo_reset(dpo_id_t *dpo)
reset a DPO ID The DPO will be unlocked.
Definition: dpo.c:231
VLIB_PLUGIN_REGISTER()
u8 ver_flags
Definition: gtpu.h:56
vnet_link_t fib_proto_to_link(fib_protocol_t proto)
Convert from a protocol to a link type.
Definition: fib_types.c:278
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
static clib_error_t * gtpu_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: gtpu.c:113
#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
vlib_node_registration_t gtpu4_input_node
(constructor) VLIB_REGISTER_NODE (gtpu4_input_node)
Definition: gtpu_decap.c:808
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:762
static uword unformat_decap_next(unformat_input_t *input, va_list *args)
Definition: gtpu.c:638
static u16 ip4_header_checksum(ip4_header_t *i)
Definition: ip4_packet.h:247
const ip46_address_t zero_addr
Definition: lookup.c:319
u32 mcast_sw_if_index
Definition: gtpu.h:145
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
#define MODE_L3
Definition: l2_input.h:210
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128