FD.io VPP  v18.01.2-1-g9b554f3
Vector Packet Processing
ip6.h
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1 /*
2  * Copyright (c) 2016 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 /*
16  * ip/ip6.h: ip6 main include file
17  *
18  * Copyright (c) 2008 Eliot Dresselhaus
19  *
20  * Permission is hereby granted, free of charge, to any person obtaining
21  * a copy of this software and associated documentation files (the
22  * "Software"), to deal in the Software without restriction, including
23  * without limitation the rights to use, copy, modify, merge, publish,
24  * distribute, sublicense, and/or sell copies of the Software, and to
25  * permit persons to whom the Software is furnished to do so, subject to
26  * the following conditions:
27  *
28  * The above copyright notice and this permission notice shall be
29  * included in all copies or substantial portions of the Software.
30  *
31  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
38  */
39 
40 #ifndef included_ip_ip6_h
41 #define included_ip_ip6_h
42 
43 #include <vlib/mc.h>
44 #include <vlib/buffer.h>
45 #include <vnet/ethernet/packet.h>
46 #include <vnet/ip/ip6_packet.h>
48 #include <vnet/ip/lookup.h>
49 #include <stdbool.h>
50 #include <vppinfra/bihash_24_8.h>
52 #include <vnet/util/radix.h>
53 
54 /*
55  * Default size of the ip6 fib hash table
56  */
57 #define IP6_FIB_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
58 #define IP6_FIB_DEFAULT_HASH_MEMORY_SIZE (32<<20)
59 
60 typedef struct
61 {
66 
67 typedef struct
68 {
69  /* Table ID (hash key) for this FIB. */
71 
72  /* Index into FIB vector. */
74 } ip6_fib_t;
75 
76 typedef struct ip6_mfib_t
77 {
78  /* Table ID (hash key) for this FIB. */
80 
81  /* Index into FIB vector. */
83 
84  /*
85  * Pointer to the top of a radix tree.
86  * This cannot be realloc'd, hence it cannot be inlined with this table
87  */
89 } ip6_mfib_t;
90 
91 struct ip6_main_t;
92 
94  (struct ip6_main_t * im,
95  uword opaque,
96  u32 sw_if_index,
97  ip6_address_t * address,
98  u32 address_length, u32 if_address_index, u32 is_del);
99 
100 typedef struct
101 {
105 
106 typedef void (ip6_table_bind_function_t)
107  (struct ip6_main_t * im,
108  uword opaque, u32 sw_if_index, u32 new_fib_index, u32 old_fib_index);
109 
110 typedef struct
111 {
115 
116 /**
117  * Enumeration of the FIB table instance types
118  */
120 {
121  /**
122  * This table stores the routes that are used to forward traffic.
123  * The key is the prefix, the result the adjacnecy to forward on.
124  */
126  /**
127  * The table that stores ALL routes learned by the DP.
128  * Some of these routes may not be ready to install in forwarding
129  * at a given time.
130  * The key in this table is the prefix, the result is the fib_entry_t
131  */
134 
135 #define IP6_FIB_NUM_TABLES (IP6_FIB_TABLE_NON_FWDING+1)
136 
137 /**
138  * A represenation of a single IP6 table
139  */
141 {
142  /* The hash table */
143  BVT (clib_bihash) ip6_hash;
144 
145  /* bitmap / refcounts / vector of mask widths to search */
148  i32 dst_address_length_refcounts[129];
150 
151 typedef struct ip6_main_t
152 {
153  /**
154  * The two FIB tables; fwding and non-fwding
155  */
157 
159 
160  /* Pool of FIBs. */
162 
163  /* Pool of V6 FIBs. */
165 
166  /** Vector of MFIBs. */
168 
169  /* Network byte orders subnet mask for each prefix length */
170  ip6_address_t fib_masks[129];
171 
172  /* Table index indexed by software interface. */
174 
175  /** Table index indexed by software interface. */
177 
178  /* IP6 enabled count by software interface */
180 
181  /* Hash table mapping table id to fib index.
182  ID space is not necessarily dense; index space is dense. */
184 
185  /** Hash table mapping table id to multicast fib index.
186  ID space is not necessarily dense; index space is dense. */
188 
189  /* Hash table mapping interface rewrite adjacency index by sw if index. */
191 
192  /* Functions to call when interface address changes. */
195 
196  /** Functions to call when interface to table biding changes. */
198 
199  /* Template used to generate IP6 neighbor solicitation packets. */
201 
202  /* ip6 lookup table config parameters */
205 
206  /* Seed for Jenkins hash used to compute ip6 flow hash. */
208 
209  struct
210  {
211  /* TTL to use for host generated packets. */
213 
214  u8 pad[3];
215  } host_config;
216 
217  /* HBH processing enabled? */
219 } ip6_main_t;
220 
221 /* Global ip6 main structure. */
222 extern ip6_main_t ip6_main;
223 
224 /* Global ip6 input node. Errors get attached to ip6 input node. */
232 
233 extern void ip6_forward_next_trace (vlib_main_t * vm,
234  vlib_node_runtime_t * node,
235  vlib_frame_t * frame,
236  vlib_rx_or_tx_t which_adj_index);
237 
240  const ip6_address_t * key,
241  const ip6_address_t * dest, uword dest_length)
242 {
243  int i;
244  for (i = 0; i < ARRAY_LEN (key->as_uword); i++)
245  {
246  if ((key->as_uword[i] ^ dest->as_uword[i]) & im->
247  fib_masks[dest_length].as_uword[i])
248  return 0;
249  }
250  return 1;
251 }
252 
255  ip6_address_t * key,
257 {
259  return ip6_destination_matches_route (im, key, a, ia->address_length);
260 }
261 
262 /* As above but allows for unaligned destinations (e.g. works right from IP header of packet). */
265  ip6_address_t * key,
266  ip6_address_t * dest,
267  uword dest_length)
268 {
269  int i;
270  for (i = 0; i < ARRAY_LEN (key->as_uword); i++)
271  {
272  if ((clib_mem_unaligned (&key->as_uword[i], uword) ^ dest->as_uword[i])
273  & im->fib_masks[dest_length].as_uword[i])
274  return 0;
275  }
276  return 1;
277 }
278 
279 always_inline int
281  u32 sw_if_index, ip6_address_t * src)
282 {
283  u32 if_add_index = lm->if_address_pool_index_by_sw_if_index[sw_if_index];
284  if (PREDICT_TRUE (if_add_index != ~0))
285  {
286  ip_interface_address_t *if_add =
287  pool_elt_at_index (lm->if_address_pool, if_add_index);
288  ip6_address_t *if_ip = ip_interface_address_get_address (lm, if_add);
289  *src = *if_ip;
290  return (0);
291  }
292  else
293  {
294  src->as_u64[0] = 0;
295  src->as_u64[1] = 0;
296  }
297  return (!0);
298 }
299 
300 /* Find interface address which matches destination. */
303  ip6_address_t * dst,
304  u32 sw_if_index,
306  result_ia)
307 {
308  ip_lookup_main_t *lm = &im->lookup_main;
310  ip6_address_t *result = 0;
311 
312  /* *INDENT-OFF* */
313  foreach_ip_interface_address (lm, ia, sw_if_index,
314  1 /* honor unnumbered */,
315  ({
317  if (ip6_destination_matches_route (im, dst, a, ia->address_length))
318  {
319  result = a;
320  break;
321  }
322  }));
323  /* *INDENT-ON* */
324  if (result_ia)
325  *result_ia = result ? ia : 0;
326  return result;
327 }
328 
330  u32 sw_if_index,
331  ip6_address_t * address,
332  u32 address_length, u32 is_del);
333 void ip6_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable);
334 
335 /**
336  * @brie get first IPv6 interface address
337  */
339 
341 
343  u32 sw_if_index);
344 
345 uword
347  u16 dst_port, u32 next_node_index);
348 
350  ip6_header_t * ip0,
351  int *bogus_lengthp);
352 
353 void ip6_register_protocol (u32 protocol, u32 node_index);
354 
356 
358  u32 sw_if_index, u32 ai);
359 
360 
361 void
363  u8 * mac);
364 
365 void
367  ip6_address_t * ip);
368 
370  flow_hash_config_t flow_hash_config);
371 
372 clib_error_t *enable_ip6_interface (vlib_main_t * vm, u32 sw_if_index);
373 
375 
376 int ip6_interface_enabled (vlib_main_t * vm, u32 sw_if_index);
377 
379  u32 sw_if_index,
380  ip6_address_t * address);
381 
383  void *data_callback,
384  u32 pid,
385  void *address_arg,
386  uword node_index,
387  uword type_opaque,
388  uword data, int is_add);
389 
390 int vnet_ip6_nd_term (vlib_main_t * vm,
391  vlib_node_runtime_t * node,
392  vlib_buffer_t * p0,
393  ethernet_header_t * eth,
394  ip6_header_t * ip, u32 sw_if_index, u16 bd_index);
395 
397 
398 u8 *format_ip6_forward_next_trace (u8 * s, va_list * args);
399 
401 
402 void ip6_punt_policer_add_del (u8 is_add, u32 policer_index);
403 void ip6_punt_redirect_add (u32 rx_sw_if_index,
404  u32 tx_sw_if_index, ip46_address_t * nh);
405 void ip6_punt_redirect_del (u32 rx_sw_if_index);
406 
407 int vnet_set_ip6_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
408  u32 table_index);
410 
411 /* Compute flow hash. We'll use it to select which Sponge to use for this
412  flow. And other things. */
415  flow_hash_config_t flow_hash_config)
416 {
417  tcp_header_t *tcp;
418  u64 a, b, c;
419  u64 t1, t2;
420  uword is_tcp_udp = 0;
421  u8 protocol = ip->protocol;
422 
423  if (PREDICT_TRUE
424  ((ip->protocol == IP_PROTOCOL_TCP)
425  || (ip->protocol == IP_PROTOCOL_UDP)))
426  {
427  is_tcp_udp = 1;
428  tcp = (void *) (ip + 1);
429  }
430  else if (ip->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)
431  {
433  if ((hbh->protocol == IP_PROTOCOL_TCP) ||
434  (hbh->protocol == IP_PROTOCOL_UDP))
435  {
436  is_tcp_udp = 1;
437  tcp = (tcp_header_t *) ((u8 *) hbh + ((hbh->length + 1) << 3));
438  }
439  protocol = hbh->protocol;
440  }
441 
442  t1 = (ip->src_address.as_u64[0] ^ ip->src_address.as_u64[1]);
443  t1 = (flow_hash_config & IP_FLOW_HASH_SRC_ADDR) ? t1 : 0;
444 
445  t2 = (ip->dst_address.as_u64[0] ^ ip->dst_address.as_u64[1]);
446  t2 = (flow_hash_config & IP_FLOW_HASH_DST_ADDR) ? t2 : 0;
447 
448  a = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t2 : t1;
449  b = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t1 : t2;
450  b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? protocol : 0;
451 
452  t1 = is_tcp_udp ? tcp->src : 0;
453  t2 = is_tcp_udp ? tcp->dst : 0;
454 
455  t1 = (flow_hash_config & IP_FLOW_HASH_SRC_PORT) ? t1 : 0;
456  t2 = (flow_hash_config & IP_FLOW_HASH_DST_PORT) ? t2 : 0;
457 
458  c = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ?
459  ((t1 << 16) | t2) : ((t2 << 16) | t1);
460 
461  hash_mix64 (a, b, c);
462  return (u32) c;
463 }
464 
465 /* ip6_locate_header
466  *
467  * This function is to search for the header specified by the protocol number
468  * in find_hdr_type.
469  * This is used to locate a specific IPv6 extension header
470  * or to find transport layer header.
471  * 1. If the find_hdr_type < 0 then it finds and returns the protocol number and
472  * offset stored in *offset of the transport or ESP header in the chain if
473  * found.
474  * 2. If a header with find_hdr_type > 0 protocol number is found then the
475  * offset is stored in *offset and protocol number of the header is
476  * returned.
477  * 3. If find_hdr_type is not found or packet is malformed or
478  * it is a non-first fragment -1 is returned.
479  */
480 always_inline int
482  ip6_header_t * ip0, int find_hdr_type, u32 * offset)
483 {
484  u8 next_proto = ip0->protocol;
485  u8 *next_header;
486  u8 done = 0;
487  u32 cur_offset;
488  u8 *temp_nxthdr = 0;
489  u32 exthdr_len = 0;
490 
491  next_header = ip6_next_header (ip0);
492  cur_offset = sizeof (ip6_header_t);
493  while (1)
494  {
495  done = (next_proto == find_hdr_type);
496  if (PREDICT_FALSE
497  (next_header >=
498  (u8 *) vlib_buffer_get_current (p0) + p0->current_length))
499  {
500  //A malicious packet could set an extension header with a too big size
501  return (-1);
502  }
503  if (done)
504  break;
505  if ((!ip6_ext_hdr (next_proto)) || next_proto == IP_PROTOCOL_IP6_NONXT)
506  {
507  if (find_hdr_type < 0)
508  break;
509  return -1;
510  }
511  if (next_proto == IP_PROTOCOL_IPV6_FRAGMENTATION)
512  {
513  ip6_frag_hdr_t *frag_hdr = (ip6_frag_hdr_t *) next_header;
514  u16 frag_off = ip6_frag_hdr_offset (frag_hdr);
515  /* Non first fragment return -1 */
516  if (frag_off)
517  return (-1);
518  exthdr_len = sizeof (ip6_frag_hdr_t);
519  temp_nxthdr = next_header + exthdr_len;
520  }
521  else if (next_proto == IP_PROTOCOL_IPSEC_AH)
522  {
523  exthdr_len =
524  ip6_ext_authhdr_len (((ip6_ext_header_t *) next_header));
525  temp_nxthdr = next_header + exthdr_len;
526  }
527  else
528  {
529  exthdr_len =
530  ip6_ext_header_len (((ip6_ext_header_t *) next_header));
531  temp_nxthdr = next_header + exthdr_len;
532  }
533  next_proto = ((ip6_ext_header_t *) next_header)->next_hdr;
534  next_header = temp_nxthdr;
535  cur_offset += exthdr_len;
536  }
537 
538  *offset = cur_offset;
539  return (next_proto);
540 }
541 
542 u8 *format_ip6_hop_by_hop_ext_hdr (u8 * s, va_list * args);
543 /*
544  * Hop-by-Hop handling
545  */
546 typedef struct
547 {
548  /* Array of function pointers to HBH option handling routines */
549  int (*options[256]) (vlib_buffer_t * b, ip6_header_t * ip,
551  u8 *(*trace[256]) (u8 * s, ip6_hop_by_hop_option_t * opt);
554 
556 
557 int ip6_hbh_register_option (u8 option,
558  int options (vlib_buffer_t * b,
559  ip6_header_t * ip,
561  u8 * trace (u8 * s,
562  ip6_hop_by_hop_option_t * opt));
563 int ip6_hbh_unregister_option (u8 option);
564 void ip6_hbh_set_next_override (uword next);
565 
566 /**
567  * Push IPv6 header to buffer
568  *
569  * @param vm - vlib_main
570  * @param b - buffer to write the header to
571  * @param src - source IP
572  * @param dst - destination IP
573  * @param prot - payload proto
574  *
575  * @return - pointer to start of IP header
576  */
577 always_inline void *
579  ip6_address_t * src, ip6_address_t * dst, int proto)
580 {
581  ip6_header_t *ip6h;
582  u16 payload_length;
583 
584  /* make some room */
585  ip6h = vlib_buffer_push_uninit (b, sizeof (ip6_header_t));
586 
588  clib_host_to_net_u32 (0x6 << 28);
589 
590  /* calculate ip6 payload length */
591  payload_length = vlib_buffer_length_in_chain (vm, b);
592  payload_length -= sizeof (*ip6h);
593 
594  ip6h->payload_length = clib_host_to_net_u16 (payload_length);
595 
596  ip6h->hop_limit = 0xff;
597  ip6h->protocol = proto;
598  clib_memcpy (ip6h->src_address.as_u8, src->as_u8,
599  sizeof (ip6h->src_address));
600  clib_memcpy (ip6h->dst_address.as_u8, dst->as_u8,
601  sizeof (ip6h->src_address));
602  b->flags |= VNET_BUFFER_F_IS_IP6;
603 
604  return ip6h;
605 }
606 
607 #endif /* included_ip_ip6_h */
608 
609 /*
610  * fd.io coding-style-patch-verification: ON
611  *
612  * Local Variables:
613  * eval: (c-set-style "gnu")
614  * End:
615  */
#define foreach_ip_interface_address(lm, a, sw_if_index, loop, body)
Definition: lookup.h:179
void( ip6_add_del_interface_address_function_t)(struct ip6_main_t *im, uword opaque, u32 sw_if_index, ip6_address_t *address, u32 address_length, u32 if_address_index, u32 is_del)
Definition: ip6.h:94
vmrglw vmrglh hi
int ip6_address_compare(ip6_address_t *a1, ip6_address_t *a2)
Definition: ip46_cli.c:58
u8 pad[3]
log2 (size of the packing page block)
Definition: bihash_doc.h:61
vlib_node_registration_t ip6_midchain_node
(constructor) VLIB_REGISTER_NODE (ip6_midchain_node)
Definition: ip6_forward.c:2413
sll srl srl sll sra u16x4 i
Definition: vector_sse2.h:337
ip6_fib_t * v6_fibs
Definition: ip6.h:164
a
Definition: bitmap.h:516
void ip6_register_protocol(u32 protocol, u32 node_index)
Definition: ip6_forward.c:1656
#define IP_FLOW_HASH_SRC_PORT
Definition: lookup.h:64
static vlib_cli_command_t trace
(constructor) VLIB_CLI_COMMAND (trace)
Definition: memory_vlib.c:1679
u32 * mfib_index_by_sw_if_index
Table index indexed by software interface.
Definition: ip6.h:176
uword lookup_table_size
Definition: ip6.h:204
ip_interface_address_t * if_address_pool
Pool of addresses that are assigned to interfaces.
Definition: lookup.h:122
void ip6_hbh_set_next_override(uword next)
Definition: ip6_forward.c:2945
int vnet_set_ip6_classify_intfc(vlib_main_t *vm, u32 sw_if_index, u32 table_index)
Definition: ip6_forward.c:3363
The table that stores ALL routes learned by the DP.
Definition: ip6.h:132
#define PREDICT_TRUE(x)
Definition: clib.h:106
u32 flow_hash_seed
Definition: ip6.h:207
u8 as_u8[16]
Definition: ip6_packet.h:48
u64 as_u64[2]
Definition: ip6_packet.h:51
static ip6_address_t * ip6_interface_address_matching_destination(ip6_main_t *im, ip6_address_t *dst, u32 sw_if_index, ip_interface_address_t **result_ia)
Definition: ip6.h:302
Definitions for all things IP (v4|v6) unicast and multicast lookup related.
int vnet_add_del_ip6_nd_change_event(vnet_main_t *vnm, void *data_callback, u32 pid, void *address_arg, uword node_index, uword type_opaque, uword data, int is_add)
int ip6_hbh_register_option(u8 option, int options(vlib_buffer_t *b, ip6_header_t *ip, ip6_hop_by_hop_option_t *opt), u8 *trace(u8 *s, ip6_hop_by_hop_option_t *opt))
Definition: ip6_forward.c:2953
#define IP_FLOW_HASH_REVERSE_SRC_DST
Definition: lookup.h:66
u8 ttl
Definition: ip6.h:212
u8 * ip_enabled_by_sw_if_index
Definition: ip6.h:179
ip6_address_t * ip6_interface_first_address(ip6_main_t *im, u32 sw_if_index)
get first IPv6 interface address
Definition: ip6_forward.c:448
vlib_node_registration_t ip6_rewrite_node
(constructor) VLIB_REGISTER_NODE (ip6_rewrite_node)
Definition: ip6_forward.c:2426
struct _vlib_node_registration vlib_node_registration_t
#define IP_FLOW_HASH_DST_PORT
Definition: lookup.h:65
struct ip6_mfib_t ip6_mfib_t
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:107
struct _tcp_header tcp_header_t
ip6_address_t src_address
Definition: ip6_packet.h:341
u8 * prefix_lengths_in_search_order
Definition: ip6.h:147
uword as_uword[16/sizeof(uword)]
Definition: ip6_packet.h:52
u32 vrf_index
Definition: ip6.h:64
vlib_node_registration_t ip6_rewrite_mcast_node
(constructor) VLIB_REGISTER_NODE (ip6_rewrite_mcast_node)
Definition: ip6_forward.c:2444
vlib_packet_template_t discover_neighbor_packet_template
Definition: ip6.h:200
vlib_rx_or_tx_t
Definition: defs.h:44
vlib_node_registration_t ip6_discover_neighbor_node
(constructor) VLIB_REGISTER_NODE (ip6_discover_neighbor_node)
Definition: ip6_forward.c:1894
u8 * format_ip6_hop_by_hop_ext_hdr(u8 *s, va_list *args)
Definition: ip6_forward.c:2509
#define IP_FLOW_HASH_DST_ADDR
Definition: lookup.h:62
#define always_inline
Definition: clib.h:92
void ip6_ethernet_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Definition: ip6_neighbor.c:558
static BVT(clib_bihash)
Definition: adj_nbr.c:26
ip6_hop_by_hop_main_t ip6_hop_by_hop_main
Definition: ip6_forward.c:2472
static uword ip6_destination_matches_route(const ip6_main_t *im, const ip6_address_t *key, const ip6_address_t *dest, uword dest_length)
Definition: ip6.h:239
int i32
Definition: types.h:81
int ip6_interface_enabled(vlib_main_t *vm, u32 sw_if_index)
unsigned long u64
Definition: types.h:89
uword ip6_udp_register_listener(vlib_main_t *vm, u16 dst_port, u32 next_node_index)
A represenation of a single IP6 table.
Definition: ip6.h:140
clib_error_t * ip6_probe_neighbor(vlib_main_t *vm, ip6_address_t *dst, u32 sw_if_index)
Definition: ip6_forward.c:1930
u32 lookup_table_nbuckets
Definition: ip6.h:203
void( ip6_table_bind_function_t)(struct ip6_main_t *im, uword opaque, u32 sw_if_index, u32 new_fib_index, u32 old_fib_index)
Definition: ip6.h:107
int ip6_hbh_unregister_option(u8 option)
Definition: ip6_forward.c:2977
static int ip6_src_address_for_packet(ip_lookup_main_t *lm, u32 sw_if_index, ip6_address_t *src)
Definition: ip6.h:280
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:459
uword * mfib_index_by_table_id
Hash table mapping table id to multicast fib index.
Definition: ip6.h:187
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:72
vlib_node_registration_t ip6_input_node
(constructor) VLIB_REGISTER_NODE (ip6_input_node)
Definition: ip6_input.c:228
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:195
void ip6_ethernet_mac_address_from_link_local_address(u8 *mac, ip6_address_t *ip)
Definition: ip6_forward.c:3119
vlib_node_registration_t ip6_glean_node
(constructor) VLIB_REGISTER_NODE (ip6_glean_node)
Definition: ip6_forward.c:1912
static u32 ip6_compute_flow_hash(const ip6_header_t *ip, flow_hash_config_t flow_hash_config)
Definition: ip6.h:414
ip6_table_bind_callback_t * table_bind_callbacks
Functions to call when interface to table biding changes.
Definition: ip6.h:197
#define PREDICT_FALSE(x)
Definition: clib.h:105
u32 index
Definition: ip6.h:73
ip6_add_del_interface_address_callback_t * add_del_interface_address_callbacks
Definition: ip6.h:194
Definition: ip6.h:76
#define ip6_ext_authhdr_len(p)
Definition: ip6_packet.h:468
void ip6_link_local_address_from_ethernet_mac_address(ip6_address_t *ip, u8 *mac)
Definition: ip6_forward.c:3103
uword * fib_index_by_table_id
Definition: ip6.h:183
#define ip6_ext_header_len(p)
Definition: ip6_packet.h:467
void send_ip6_na(vlib_main_t *vm, vnet_hw_interface_t *hi)
ip6_address_t fib_masks[129]
Definition: ip6.h:170
#define hash_mix64(a0, b0, c0)
Definition: hash.h:530
svmdb_client_t * c
Definition: ip6.h:67
struct radix_node_head * rhead
Definition: ip6.h:88
This table stores the routes that are used to forward traffic.
Definition: ip6.h:125
#define clib_memcpy(a, b, c)
Definition: string.h:75
u32 dst_address_length
Definition: ip6.h:63
u32 index
Definition: ip6.h:82
#define ARRAY_LEN(x)
Definition: clib.h:59
clib_error_t * enable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
u8 hbh_enabled
Definition: ip6.h:218
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:351
void ip6_punt_redirect_add(u32 rx_sw_if_index, u32 tx_sw_if_index, ip46_address_t *nh)
static u8 ip6_ext_hdr(u8 nexthdr)
Definition: ip6_packet.h:455
void ip6_punt_redirect_del(u32 rx_sw_if_index)
ip6_address_t addr
Definition: ip6.h:62
u32 * if_address_pool_index_by_sw_if_index
Head of doubly linked list of interface addresses for each software interface.
Definition: lookup.h:129
u16 ip6_tcp_udp_icmp_compute_checksum(vlib_main_t *vm, vlib_buffer_t *p0, ip6_header_t *ip0, int *bogus_lengthp)
Definition: ip6_forward.c:1133
vlib_node_registration_t ip6_lookup_node
(constructor) VLIB_REGISTER_NODE (ip6_lookup_node)
Definition: ip6_forward.c:735
void ip6_punt_policer_add_del(u8 is_add, u32 policer_index)
#define ip6_frag_hdr_offset(hdr)
Definition: ip6_packet.h:519
#define IP6_FIB_NUM_TABLES
Definition: ip6.h:135
vlib buffer structure definition and a few select access methods.
#define IP_FLOW_HASH_SRC_ADDR
Flow hash configuration.
Definition: lookup.h:61
unsigned int u32
Definition: types.h:88
ip6_fib_table_instance_type_t_
Enumeration of the FIB table instance types.
Definition: ip6.h:119
serialize_function_t serialize_vnet_ip6_main
Definition: ip6.h:355
ip6_main_t ip6_main
Definition: ip6_forward.c:3009
ip_lookup_main_t lookup_main
Definition: ip6.h:158
u32 table_id
Definition: ip6.h:79
struct ip6_main_t ip6_main_t
struct mfib_table_t_ * mfibs
Vector of MFIBs.
Definition: ip6.h:167
u32 flow_hash_config_t
A flow hash configuration is a mask of the flow hash options.
Definition: lookup.h:82
int vnet_set_ip6_flow_hash(u32 table_id, flow_hash_config_t flow_hash_config)
Definition: ip6_forward.c:3171
static int ip6_locate_header(vlib_buffer_t *p0, ip6_header_t *ip0, int find_hdr_type, u32 *offset)
Definition: ip6.h:481
u64 uword
Definition: types.h:112
static uword ip6_destination_matches_interface(ip6_main_t *im, ip6_address_t *key, ip_interface_address_t *ia)
Definition: ip6.h:254
template key/value backing page structure
Definition: bihash_doc.h:44
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:328
static void * vlib_buffer_push_uninit(vlib_buffer_t *b, u8 size)
Prepend uninitialized data to buffer.
Definition: buffer.h:292
unsigned short u16
Definition: types.h:57
u16 payload_length
Definition: ip6_packet.h:332
struct ip6_fib_table_instance_t_ ip6_fib_table_instance_t
A represenation of a single IP6 table.
static void * vlib_buffer_push_ip6(vlib_main_t *vm, vlib_buffer_t *b, ip6_address_t *src, ip6_address_t *dst, int proto)
Push IPv6 header to buffer.
Definition: ip6.h:578
serialize_function_t unserialize_vnet_ip6_main
Definition: ip6.h:355
u32 ip6_tcp_udp_icmp_validate_checksum(vlib_main_t *vm, vlib_buffer_t *p0)
Definition: ip6_forward.c:1209
void( serialize_function_t)(serialize_main_t *m, va_list *va)
Definition: serialize.h:168
unsigned char u8
Definition: types.h:56
uword * non_empty_dst_address_length_bitmap
Definition: ip6.h:146
clib_error_t * set_ip6_link_local_address(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *address)
#define clib_mem_unaligned(pointer, type)
Definition: types.h:155
uword * interface_route_adj_index_by_sw_if_index
Definition: ip6.h:190
vlib_node_registration_t ip6_rewrite_local_node
A protocol Independent IP multicast FIB table.
Definition: mfib_table.h:35
#define IP_FLOW_HASH_PROTO
Definition: lookup.h:63
void ip6_forward_next_trace(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, vlib_rx_or_tx_t which_adj_index)
Definition: ip6_forward.c:1041
u32 table_id
Definition: ip6.h:70
clib_error_t * ip6_add_del_interface_address(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *address, u32 address_length, u32 is_del)
Definition: ip6_forward.c:467
static uword ip6_unaligned_destination_matches_route(ip6_main_t *im, ip6_address_t *key, ip6_address_t *dest, uword dest_length)
Definition: ip6.h:264
static void * ip_interface_address_get_address(ip_lookup_main_t *lm, ip_interface_address_t *a)
Definition: lookup.h:172
clib_error_t * disable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index, VLIB_BUFFER_IS_TRACED: trace this buffer.
Definition: buffer.h:75
struct fib_table_t_ * fibs
Definition: ip6.h:161
u32 * fib_index_by_sw_if_index
Definition: ip6.h:173
void ip6_sw_interface_enable_disable(u32 sw_if_index, u32 is_enable)
Definition: ip6_forward.c:416
enum ip6_fib_table_instance_type_t_ ip6_fib_table_instance_type_t
Enumeration of the FIB table instance types.
int vnet_ip6_nd_term(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_buffer_t *p0, ethernet_header_t *eth, ip6_header_t *ip, u32 sw_if_index, u16 bd_index)
ip6_address_t dst_address
Definition: ip6_packet.h:341
A protocol Independent FIB table.
Definition: fib_table.h:35
uword next_override
Definition: ip6.h:552
u8 * format_ip6_forward_next_trace(u8 *s, va_list *args)
Definition: ip6_forward.c:991