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Vector Packet Processing
sixrd.c
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1 /*
2  * sixrd.c - 6RD specific functions (RFC5969)
3  *
4  * Copyright (c) 2018 Cisco and/or its affiliates.
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 /**
19  * This code supports the following sixrd modes:
20  *
21  * 32 EA bits (Complete IPv4 address is embedded):
22  * ea_bits_len = 32
23  * IPv4 suffix is embedded:
24  * ea_bits_len = < 32
25  * No embedded address bits (1:1 mode):
26  * ea_bits_len = 0
27  */
28 
29 #include "ipip.h"
30 #include <vlibapi/api.h>
31 #include <vlibmemory/api.h>
32 #include <vnet/adj/adj.h>
33 #include <vnet/adj/adj_delegate.h>
34 #include <vnet/adj/adj_midchain.h>
35 #include <vnet/dpo/lookup_dpo.h>
36 #include <vnet/fib/fib_table.h>
37 #include <vnet/fib/ip6_fib.h>
38 #include <vnet/plugin/plugin.h>
39 
41 
42 /**
43  * Adj delegate data
44  */
45 typedef struct sixrd_adj_delegate_t_
46 {
52 
53 /**
54  * Pool of delegate structs
55  */
57 
58 /**
59  * Adj delegate registered type
60  */
62 
63 /**
64  * FIB node registered type
65  */
67 
68 static inline sixrd_adj_delegate_t *
70 {
71  if (ad == NULL)
72  return (NULL);
73  return (pool_elt_at_index (sixrd_adj_delegate_pool, ad->ad_index));
74 }
75 
76 static inline const sixrd_adj_delegate_t *
78 {
79  if (ad == NULL)
80  {
81  return (NULL);
82  }
83  return (pool_elt_at_index (sixrd_adj_delegate_pool, ad->ad_index));
84 }
85 
86 static void
88  const void *data)
89 {
91  ip6_header_t *ip6 = vlib_buffer_get_current (b0) + sizeof (ip4_header_t);
92  const ipip_tunnel_t *t = data;
93 
94  ip4->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
95  ip4->dst_address.as_u32 =
97  ip4->checksum = ip4_header_checksum (ip4);
98 }
99 
100 static void
102  const void *data)
103 {
104  const ipip_tunnel_t *t = data;
106  ip4->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
107  ip4->dst_address.as_u32 =
108  sixrd_get_addr_net (t, adj->sub_type.nbr.next_hop.as_u64[0]);
109  ip4->checksum = ip4_header_checksum (ip4);
110 }
111 
112 static u8 *
114  vnet_link_t link_type, const void *dst_address)
115 {
116  u8 *rewrite = NULL;
117  ipip_tunnel_t *t;
118 
119  t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
120  if (!t)
121  return 0;
122 
123  vec_validate (rewrite, sizeof (ip4_header_t) - 1);
124  ip4_header_t *ip4 = (ip4_header_t *) rewrite;
125  ip4->ip_version_and_header_length = 0x45;
126  ip4->ttl = 64;
127  ip4->protocol = IP_PROTOCOL_IPV6;
128  /* fixup ip4 header length and checksum after-the-fact */
129  ip4->src_address.as_u32 = t->tunnel_src.ip4.as_u32;
130  ip4->dst_address.as_u32 = 0;
131  ip4->checksum = ip4_header_checksum (ip4);
132 
133  return rewrite;
134 }
135 
136 static void
137 ip6ip_tunnel_stack (adj_index_t ai, u32 fib_entry_index)
138 {
139  ip_adjacency_t *adj = adj_get (ai);
140  ipip_tunnel_t *t;
141  u32 sw_if_index = adj->rewrite_header.sw_if_index;
142 
143  t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
144  if (!t)
145  return;
146 
147  /*
148  * find the adjacency that is contributed by the FIB entry
149  * that this tunnel resolves via, and use it as the next adj
150  * in the midchain
151  */
154  {
157  (fib_entry_index));
158  }
159  else
160  {
162  }
163 }
164 
165 static void
167 {
168  dpo_id_t dpo = DPO_INVALID;
169  ip_adjacency_t *adj = adj_get (ai);
170  u32 sw_if_index = adj->rewrite_header.sw_if_index;
171 
173  if (!t)
174  return;
175 
179  adj_nbr_midchain_stack (ai, &dpo);
180  dpo_reset (&dpo);
181 }
182 
183 static void
185 {
186  ip_adjacency_t *adj = adj_get (ai);
188 
189  /* Not our tunnel */
190  if (!t)
191  return;
193  {
195  sixrd_build_rewrite (vnm, sw_if_index,
197  (ai), NULL));
198  sixrd_tunnel_stack (ai, t->fib_index);
199  }
200  else
201  {
202  sixrd_adj_delegate_t *sixrd_ad;
203  ip4_address_t da4;
204 
205  da4.as_u32 =
206  sixrd_get_addr_net (t, adj->sub_type.nbr.next_hop.as_u64[0]);
207 
208  fib_prefix_t pfx = {
210  .fp_len = 32,
211  .fp_addr = {
212  .ip4 = da4,
213  }
214  ,
215  };
216 
218  sixrd_build_rewrite (vnm, sw_if_index,
220  (ai), NULL));
221 
222  sixrd_ad =
224  if (sixrd_ad == NULL)
225  {
226  pool_get (sixrd_adj_delegate_pool, sixrd_ad);
228  sixrd_ad->adj_index = ai;
229  sixrd_ad->sixrd_fib_entry_index =
232  sixrd_ad->sixrd_sibling =
235  sixrd_ad - sixrd_adj_delegate_pool);
236 
238  sixrd_ad - sixrd_adj_delegate_pool);
239 
241  }
242  }
243 }
244 
245 clib_error_t *
247 {
248  /* Always up */
249  vnet_hw_interface_set_flags (vnm, hw_if_index,
251  return /* no error */ 0;
252 }
253 
254 /* *INDENT-OFF* */
255 VNET_HW_INTERFACE_CLASS(sixrd_hw_interface_class) = {
256  .name = "ip6ip-6rd",
257  .build_rewrite = sixrd_build_rewrite,
258  .update_adjacency = sixrd_update_adj,
259 };
260 
261 VNET_DEVICE_CLASS(sixrd_device_class) = {
262  .name = "ip6ip-6rd",
263  .admin_up_down_function = sixrd_interface_admin_up_down,
264 #ifdef SOON
265  .clear counter = 0;
266 #endif
267 }
268 ;
269 /* *INDENT-ON* */
270 
271 int
272 sixrd_add_tunnel (ip6_address_t * ip6_prefix, u8 ip6_prefix_len,
273  ip4_address_t * ip4_prefix, u8 ip4_prefix_len,
274  ip4_address_t * ip4_src, bool security_check,
275  u32 ip4_fib_index, u32 ip6_fib_index, u32 * sw_if_index)
276 {
278  ipip_tunnel_t *t;
279 
280  if ((ip6_prefix_len + 32 - ip4_prefix_len) > 64)
281  return VNET_API_ERROR_INVALID_VALUE;
282 
283  /* Tunnel already configured */
284  ip46_address_t src = ip46_address_initializer, dst =
286  ip_set (&src, ip4_src, true);
287  ipip_tunnel_key_t key = {
289  .fib_index = ip4_fib_index,
290  .src = src,
291  .dst = dst
292  };
293 
294  t = ipip_tunnel_db_find (&key);
295  if (t)
296  return VNET_API_ERROR_IF_ALREADY_EXISTS;
297 
298  /* Get tunnel index */
300  memset (t, 0, sizeof (*t));
301  u32 t_idx = t - gm->tunnels; /* tunnel index (or instance) */
302 
303  /* Init tunnel struct */
304  t->mode = IPIP_MODE_6RD;
305  t->sixrd.ip4_prefix.as_u32 = ip4_prefix->as_u32;
306  t->sixrd.ip4_prefix_len = ip4_prefix_len;
307  t->sixrd.ip6_prefix = *ip6_prefix;
308  t->sixrd.ip6_prefix_len = ip6_prefix_len;
309  t->sixrd.ip6_fib_index = ip6_fib_index;
310  t->tunnel_src = src;
311  t->sixrd.security_check = security_check;
312  t->sixrd.shift =
313  (ip4_prefix_len < 32) ? 64 - ip6_prefix_len - (32 - ip4_prefix_len) : 0;
314 
315  /* Create interface */
316  u32 hw_if_index =
317  vnet_register_interface (vnet_get_main (), sixrd_device_class.index,
318  t_idx,
319  sixrd_hw_interface_class.index, t_idx);
320 
321  /* Default the interface to up and enable IPv6 (payload) */
323  vnet_get_hw_interface (vnet_get_main (), hw_if_index);
324  t->hw_if_index = hw_if_index;
325  t->fib_index = ip4_fib_index;
326  t->sw_if_index = hi->sw_if_index;
327  t->dev_instance = t_idx;
328  t->user_instance = t_idx;
329 
331 
332  ipip_tunnel_db_add (t, &key);
333 
335  ~0);
336  gm->tunnel_index_by_sw_if_index[hi->sw_if_index] = t_idx;
337 
343 
344  /* Create IPv6 route/adjacency */
345  /* *INDENT-OFF* */
346  fib_prefix_t pfx6 = {
348  .fp_len = t->sixrd.ip6_prefix_len,
349  .fp_addr = {
350  .ip6 = t->sixrd.ip6_prefix,
351  },
352  };
353  /* *INDENT-ON* */
354 
356  fib_table_entry_update_one_path (ip6_fib_index, &pfx6, FIB_SOURCE_6RD,
358  &ADJ_BCAST_ADDR, t->sw_if_index, ~0, 1,
360 
361  *sw_if_index = t->sw_if_index;
362 
363  if (!gm->ip4_protocol_registered)
364  {
366  vlib_get_node_by_name (gm->vlib_main, (u8 *) "ipip4-input");
367  ASSERT (ipip4_input);
368  ip4_register_protocol (IP_PROTOCOL_IPV6, ipip4_input->index);
369  }
370  return 0;
371 }
372 
373 /*
374  * sixrd_del_tunnel
375  */
376 int
378 {
381 
382  if (!t)
383  {
384  clib_warning ("SIXRD tunnel delete: tunnel does not exist: %d",
385  sw_if_index);
386  return -1;
387  }
388 
389  /* *INDENT-OFF* */
390  fib_prefix_t pfx6 = {
392  .fp_len = t->sixrd.ip6_prefix_len,
393  .fp_addr = {
394  .ip6 = t->sixrd.ip6_prefix,
395  },
396  };
397  /* *INDENT-ON* */
398 
399  fib_table_entry_path_remove (t->sixrd.ip6_fib_index, &pfx6,
402  &ADJ_BCAST_ADDR, t->sw_if_index, ~0, 1,
405 
407  0 /* down */ );
410 
413  pool_put (gm->tunnels, t);
414 
415  return 0;
416 }
417 
418 static void
420 {
421  sixrd_adj_delegate_t *sixrd_ad;
422 
423  sixrd_ad = sixrd_adj_from_base (aed);
425  sixrd_ad->sixrd_sibling);
427  FIB_SOURCE_RR);
428  pool_put (sixrd_adj_delegate_pool, sixrd_ad);
429 }
430 
431 static u8 *
433 {
434  const sixrd_adj_delegate_t *sixrd_ad;
435 
436  sixrd_ad = sixrd_adj_from_const_base (aed);
437  s = format (s, "SIXRD:[fib-entry:%d]", sixrd_ad->sixrd_fib_entry_index);
438 
439  return (s);
440 }
441 
442 static void
444 {
445  /* top of the dependency tree, locks not managed here. */
446 }
447 
448 static sixrd_adj_delegate_t *
450 {
451  return ((sixrd_adj_delegate_t *) (((char *) node) -
453  sixrd_node)));
454 }
455 
459 {
460  sixrd_adj_delegate_t *sixrd_ad;
461 
462  sixrd_ad = sixrd_adj_delegate_from_fib_node (node);
463  ip6ip_tunnel_stack (sixrd_ad->adj_index, sixrd_ad->sixrd_fib_entry_index);
464 
466 }
467 
468 /**
469  * Function definition to get a FIB node from its index
470  */
471 static fib_node_t *
473 {
474  sixrd_adj_delegate_t *sixrd_ad;
475 
476  sixrd_ad = pool_elt_at_index (sixrd_adj_delegate_pool, index);
477 
478  return (&sixrd_ad->sixrd_node);
479 }
480 
481 /**
482  * VFT registered with the adjacency delegate
483  */
484 const static adj_delegate_vft_t sixrd_adj_delegate_vft = {
486  .adv_format = sixrd_adj_delegate_format,
487 };
488 
489 /**
490  * VFT registered with the FIB node for the adj delegate
491  */
492 const static fib_node_vft_t sixrd_fib_node_vft = {
494  .fnv_last_lock = sixrd_fib_node_last_lock_gone,
495  .fnv_back_walk = sixrd_fib_node_back_walk_notify,
496 };
497 
498 static clib_error_t *
500 {
501  clib_error_t *error = 0;
502 
503  /* Make sure the IPIP tunnel subsystem is initialised */
504  error = vlib_call_init_function (vm, ipip_init);
505 
507  adj_delegate_register_new_type (&sixrd_adj_delegate_vft);
508  sixrd_fib_node_type = fib_node_register_new_type (&sixrd_fib_node_vft);
509 
510  return error;
511 }
512 
514 
515 /*
516  * fd.io coding-style-patch-verification: ON
517  *
518  * Local Variables:
519  * eval: (c-set-style "gnu")
520  * End:
521  */
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:437
fib_protocol_t fp_proto
protocol type
Definition: fib_types.h:212
vmrglw vmrglh hi
void ipip_tunnel_db_remove(ipip_tunnel_t *t)
Definition: ipip.c:381
Recursive resolution source.
Definition: fib_entry.h:125
vl_api_address_t src
Definition: vxlan_gbp.api:33
static sixrd_adj_delegate_t * sixrd_adj_delegate_from_fib_node(fib_node_t *node)
Definition: sixrd.c:449
clib_error_t * sixrd_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: sixrd.c:246
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
Definition: interface.c:469
adj_delegate_adj_deleted_t adv_adj_deleted
Definition: adj_delegate.h:79
ip4_address_t src_address
Definition: ip4_packet.h:169
A representation of a IPIP tunnel.
Definition: ipip.h:70
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
struct ip_adjacency_t_::@45::@46 nbr
IP_LOOKUP_NEXT_ARP/IP_LOOKUP_NEXT_REWRITE.
void fib_node_init(fib_node_t *node, fib_node_type_t type)
Definition: fib_node.c:185
ip46_address_t tunnel_src
Definition: ipip.h:78
u32 fib_entry_child_add(fib_node_index_t fib_entry_index, fib_node_type_t child_type, fib_node_index_t child_index)
Definition: fib_entry.c:527
u64 as_u64[2]
Definition: ip6_packet.h:51
static void sixrd_fib_node_last_lock_gone(fib_node_t *node)
Definition: sixrd.c:443
static u8 * sixrd_build_rewrite(vnet_main_t *vnm, u32 sw_if_index, vnet_link_t link_type, const void *dst_address)
Definition: sixrd.c:113
void ip_set(ip46_address_t *dst, void *src, u8 is_ip4)
Definition: ip.c:90
vnet_link_t adj_get_link_type(adj_index_t ai)
Return the link type of the adjacency.
Definition: adj.c:400
#define NULL
Definition: clib.h:57
u32 index
Definition: node.h:288
Broadcasr Adjacency.
Definition: adj.h:85
IP unicast adjacency.
Definition: adj.h:185
union ip_adjacency_t_::@45 sub_type
enum fib_node_back_walk_rc_t_ fib_node_back_walk_rc_t
Return code from a back walk function.
const dpo_id_t * fib_entry_contribute_ip_forwarding(fib_node_index_t fib_entry_index)
Definition: fib_entry.c:478
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
fib_node_t sixrd_node
Definition: sixrd.c:48
void fib_entry_child_remove(fib_node_index_t fib_entry_index, u32 sibling_index)
Definition: fib_entry.c:538
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:64
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
static fib_node_t * sixrd_fib_node_get(fib_node_index_t index)
Function definition to get a FIB node from its index.
Definition: sixrd.c:472
VNET_HW_INTERFACE_CLASS(sixrd_hw_interface_class)
#define VNET_HW_INTERFACE_FLAG_LINK_UP
Definition: interface.h:494
void ip4_register_protocol(u32 protocol, u32 node_index)
Definition: ip4_forward.c:1684
Definition: fib_entry.h:277
static uword vlib_buffer_length_in_chain(vlib_main_t *vm, vlib_buffer_t *b)
Get length in bytes of the buffer chain.
Definition: buffer_funcs.h:263
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:228
u32 hw_if_index
Definition: ipip.h:81
bool ip4_protocol_registered
Definition: ipip.h:122
unsigned char u8
Definition: types.h:56
static void ip6ip_tunnel_stack(adj_index_t ai, u32 fib_entry_index)
Definition: sixrd.c:137
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
VNET_DEVICE_CLASS(sixrd_device_class)
static_always_inline u32 sixrd_get_addr_net(const ipip_tunnel_t *t, u64 dal)
Definition: ipip.h:134
fib_node_index_t fib_table_entry_update_one_path(u32 fib_index, const fib_prefix_t *prefix, fib_source_t source, fib_entry_flag_t flags, dpo_proto_t next_hop_proto, const ip46_address_t *next_hop, u32 next_hop_sw_if_index, u32 next_hop_fib_index, u32 next_hop_weight, fib_mpls_label_t *next_hop_labels, fib_route_path_flags_t path_flags)
Update the entry to have just one path.
Definition: fib_table.c:772
static ip_adjacency_t * adj_get(adj_index_t adj_index)
Get a pointer to an adjacency object from its index.
Definition: adj.h:380
static void sixrd_fixup(vlib_main_t *vm, ip_adjacency_t *adj, vlib_buffer_t *b0, const void *data)
Definition: sixrd.c:87
memset(h->entries, 0, sizeof(h->entries[0])*entries)
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
static uword ipip4_input(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
Definition: node.c:220
u32 user_instance
Definition: ipip.h:84
u32 sw_if_index
Definition: vxlan_gbp.api:39
static const sixrd_adj_delegate_t * sixrd_adj_from_const_base(const adj_delegate_t *ad)
Definition: sixrd.c:77
ip4_address_t dst_address
Definition: ip4_packet.h:169
Aggregrate type for a prefix.
Definition: fib_types.h:203
u32 * tunnel_index_by_sw_if_index
Definition: ipip.h:112
fib_node_index_t sixrd_fib_entry_index
Definition: sixrd.c:49
Adj delegate.
Definition: adj_delegate.h:44
unsigned int u32
Definition: types.h:88
ipip_transport_t transport
Definition: ipip.h:57
#define vlib_call_init_function(vm, x)
Definition: init.h:260
u32 vnet_register_interface(vnet_main_t *vnm, u32 dev_class_index, u32 dev_instance, u32 hw_class_index, u32 hw_instance)
Definition: interface.c:703
static sixrd_adj_delegate_t * sixrd_adj_delegate_pool
Pool of delegate structs.
Definition: sixrd.c:56
static u8 * sixrd_adj_delegate_format(const adj_delegate_t *aed, u8 *s)
Definition: sixrd.c:432
Definition: fib_entry.h:275
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
static fib_node_back_walk_rc_t sixrd_fib_node_back_walk_notify(fib_node_t *node, fib_node_back_walk_ctx_t *ctx)
Definition: sixrd.c:457
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:464
int adj_delegate_add(ip_adjacency_t *adj, adj_delegate_type_t adt, index_t adi)
Add a delegate to an adjacency.
Definition: adj_delegate.c:107
void ipip_tunnel_db_add(ipip_tunnel_t *t, ipip_tunnel_key_t *key)
Definition: ipip.c:371
static uword vnet_hw_interface_get_flags(vnet_main_t *vnm, u32 hw_if_index)
ipip_tunnel_t * ipip_tunnel_db_find(ipip_tunnel_key_t *key)
Definition: ipip.c:347
#define gm
Definition: dlmalloc.c:1217
long ctx[MAX_CONNS]
Definition: main.c:144
ipip_tunnel_t * ipip_tunnel_db_find_by_sw_if_index(u32 sw_if_index)
Definition: ipip.c:359
enum adj_delegate_type_t_ adj_delegate_type_t
A Delagate is a means to implement the Delagation design pattern; the extension of an object&#39;s functi...
ipip_tunnel_t * tunnels
Definition: ipip.h:110
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:205
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:274
Adj delegate data.
Definition: sixrd.c:45
static adj_delegate_type_t sixrd_adj_delegate_type
Adj delegate registered type.
Definition: sixrd.c:61
void lookup_dpo_add_or_lock_w_fib_index(fib_node_index_t fib_index, dpo_proto_t proto, lookup_cast_t cast, lookup_input_t input, lookup_table_t table_config, dpo_id_t *dpo)
Definition: lookup_dpo.c:133
An node in the FIB graph.
Definition: fib_node.h:289
void fib_table_unlock(u32 fib_index, fib_protocol_t proto, fib_source_t source)
Take a reference counting lock on the table.
Definition: fib_table.c:1236
#define ip46_address_initializer
Definition: ip6_packet.h:96
u32 flags
Definition: vhost_user.h:115
#define pool_get_aligned(P, E, A)
Allocate an object E from a pool P (general version).
Definition: pool.h:188
fib_node_index_t fib_table_entry_special_add(u32 fib_index, const fib_prefix_t *prefix, fib_source_t source, fib_entry_flag_t flags)
Add a &#39;special&#39; entry to the FIB.
Definition: fib_table.c:388
ipip_main_t ipip_main
Definition: ipip.c:28
vlib_main_t * vm
Definition: buffer.c:294
void fib_table_entry_delete_index(fib_node_index_t fib_entry_index, fib_source_t source)
Delete a FIB entry.
Definition: fib_table.c:877
vl_api_address_t dst
Definition: vxlan_gbp.api:34
index_t ad_index
The index passed by the provider to identify its delegate instance.
Definition: adj_delegate.h:60
From 6RD.
Definition: fib_entry.h:70
#define clib_warning(format, args...)
Definition: error.h:59
void adj_nbr_midchain_update_rewrite(adj_index_t adj_index, adj_midchain_fixup_t fixup, const void *fixup_data, adj_flags_t flags, u8 *rewrite)
adj_nbr_midchain_update_rewrite
Definition: adj_midchain.c:506
fib_node_get_t fnv_get
Definition: fib_node.h:277
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:30
u32 adj_index_t
An index for adjacencies.
Definition: adj_types.h:30
vlib_node_t * vlib_get_node_by_name(vlib_main_t *vm, u8 *name)
Definition: node.c:45
static void ip6ip_fixup(vlib_main_t *vm, ip_adjacency_t *adj, vlib_buffer_t *b0, const void *data)
Definition: sixrd.c:101
void fib_table_lock(u32 fib_index, fib_protocol_t proto, fib_source_t source)
Release a reference counting lock on the table.
Definition: fib_table.c:1265
Context passed between object during a back walk.
Definition: fib_node.h:202
u32 fib_index
Definition: ipip.h:80
#define ASSERT(truth)
void adj_nbr_midchain_stack(adj_index_t adj_index, const dpo_id_t *next)
adj_nbr_midchain_stack
Definition: adj_midchain.c:571
adj_delegate_type_t adj_delegate_register_new_type(const adj_delegate_vft_t *vft)
adj_delegate_register_new_type
Definition: adj_delegate.c:190
adj_delegate_t * adj_delegate_get(const ip_adjacency_t *adj, adj_delegate_type_t type)
Get a delegate from an adjacency.
Definition: adj_delegate.c:58
enum vnet_link_t_ vnet_link_t
Link Type: A description of the protocol of packets on the link.
struct sixrd_adj_delegate_t_ sixrd_adj_delegate_t
Adj delegate data.
int sixrd_add_tunnel(ip6_address_t *ip6_prefix, u8 ip6_prefix_len, ip4_address_t *ip4_prefix, u8 ip4_prefix_len, ip4_address_t *ip4_src, bool security_check, u32 ip4_fib_index, u32 ip6_fib_index, u32 *sw_if_index)
Definition: sixrd.c:272
vlib_node_registration_t ip4_sixrd_node
This code supports the following sixrd modes:
static void sixrd_update_adj(vnet_main_t *vnm, u32 sw_if_index, adj_index_t ai)
Definition: sixrd.c:184
static clib_error_t * sixrd_init(vlib_main_t *vm)
Definition: sixrd.c:499
void adj_nbr_midchain_unstack(adj_index_t adj_index)
adj_nbr_midchain_unstack
Definition: adj_midchain.c:549
static fib_node_type_t sixrd_fib_node_type
FIB node registered type.
Definition: sixrd.c:66
static sixrd_adj_delegate_t * sixrd_adj_from_base(adj_delegate_t *ad)
Definition: sixrd.c:69
void fib_table_entry_path_remove(u32 fib_index, const fib_prefix_t *prefix, fib_source_t source, dpo_proto_t next_hop_proto, const ip46_address_t *next_hop, u32 next_hop_sw_if_index, u32 next_hop_fib_index, u32 next_hop_weight, fib_route_path_flags_t path_flags)
remove one path to an entry (aka route) in the FIB.
Definition: fib_table.c:682
u32 sw_if_index
Definition: ipip.h:82
void vnet_delete_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
Definition: interface.c:913
struct _vlib_node_registration vlib_node_registration_t
ip_lookup_next_t lookup_next_index
Next hop after ip4-lookup.
Definition: adj.h:200
ipip_mode_t mode
Definition: ipip.h:75
#define DPO_INVALID
An initialiser for DPOs declared on the stack.
Definition: dpo.h:195
static clib_error_t * ipip_init(vlib_main_t *vm)
Definition: ipip.c:589
An ADJ delegate virtual function table.
Definition: adj_delegate.h:77
static void sixrd_tunnel_stack(adj_index_t ai, u32 fib_index)
Definition: sixrd.c:166
static void sixrd_adj_delegate_adj_deleted(adj_delegate_t *aed)
Definition: sixrd.c:419
void vnet_sw_interface_set_mtu(vnet_main_t *vnm, u32 sw_if_index, u32 mtu)
Definition: interface.c:605
A FIB graph nodes virtual function table.
Definition: fib_node.h:276
u32 dev_instance
Definition: ipip.h:83
enum fib_node_type_t_ fib_node_type_t
The types of nodes in a FIB graph.
int sixrd_del_tunnel(u32 sw_if_index)
Definition: sixrd.c:377
struct ipip_tunnel_t::@227::@230 sixrd
void dpo_reset(dpo_id_t *dpo)
reset a DPO ID The DPO will be unlocked.
Definition: dpo.c:231
clib_error_t * vnet_sw_interface_set_flags(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: interface.c:477
u8 ip_version_and_header_length
Definition: ip4_packet.h:137
#define vec_validate_init_empty(V, I, INIT)
Make sure vector is long enough for given index and initialize empty space (no header, unspecified alignment)
Definition: vec.h:486
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
vlib_main_t * vlib_main
Definition: ipip.h:116
static u16 ip4_header_checksum(ip4_header_t *i)
Definition: ip4_packet.h:246
const ip46_address_t ADJ_BCAST_ADDR
The special broadcast address (to construct a broadcast adjacency.
Definition: adj.c:41
void ip6_sw_interface_enable_disable(u32 sw_if_index, u32 is_enable)
Definition: ip6_forward.c:142
ip6_address_t dst_address
Definition: ip6_packet.h:378