FD.io VPP  v19.08-27-gf4dcae4
Vector Packet Processing
ip6.h
Go to the documentation of this file.
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/buffer.h>
44 #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>
51 #include <vppinfra/bihash_40_8.h>
53 #include <vnet/util/radix.h>
54 #include <vnet/util/throttle.h>
55 
56 /*
57  * Default size of the ip6 fib hash table
58  */
59 #define IP6_FIB_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
60 #define IP6_FIB_DEFAULT_HASH_MEMORY_SIZE (32<<20)
61 
62 typedef struct
63 {
68 
69 typedef struct
70 {
71  /* required for pool_get_aligned. */
72  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
73 
74  /* Table ID (hash key) for this FIB. */
76 
77  /* Index into FIB vector. */
79 } ip6_fib_t;
80 
81 typedef struct ip6_mfib_t
82 {
83  /* required for pool_get_aligned. */
84  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
85 
86  /* Table ID (hash key) for this FIB. */
88 
89  /* Index into FIB vector. */
91 } ip6_mfib_t;
92 
93 struct ip6_main_t;
94 
96  (struct ip6_main_t * im,
97  uword opaque,
100  u32 address_length, u32 if_address_index, u32 is_del);
101 
102 typedef struct
103 {
107 
108 typedef void (ip6_table_bind_function_t)
109  (struct ip6_main_t * im,
110  uword opaque, u32 sw_if_index, u32 new_fib_index, u32 old_fib_index);
111 
112 typedef struct
113 {
117 
118 /**
119  * Enumeration of the FIB table instance types
120  */
122 {
123  /**
124  * This table stores the routes that are used to forward traffic.
125  * The key is the prefix, the result the adjacnecy to forward on.
126  */
128  /**
129  * The table that stores ALL routes learned by the DP.
130  * Some of these routes may not be ready to install in forwarding
131  * at a given time.
132  * The key in this table is the prefix, the result is the fib_entry_t
133  */
136 
137 #define IP6_FIB_NUM_TABLES (IP6_FIB_TABLE_NON_FWDING+1)
138 
139 /**
140  * A represenation of a single IP6 table
141  */
143 {
144  /* The hash table */
145  clib_bihash_24_8_t ip6_hash;
146 
147  /* bitmap / refcounts / vector of mask widths to search */
150  i32 dst_address_length_refcounts[129];
152 
153 /**
154  * A represenation of a single IP6 mfib table
155  */
157 {
158  /* The hash table */
159  clib_bihash_40_8_t ip6_mhash;
160 
161  /* bitmap / refcounts / vector of mask widths to search */
164  i32 dst_address_length_refcounts[257];
166 
167 typedef struct ip6_main_t
168 {
169  /**
170  * The two FIB tables; fwding and non-fwding
171  */
173 
174  /**
175  * the single MFIB table
176  */
178 
180 
181  /* Pool of FIBs. */
183 
184  /* Pool of V6 FIBs. */
186 
187  /** Vector of MFIBs. */
189 
190  /* Network byte orders subnet mask for each prefix length */
191  ip6_address_t fib_masks[129];
192 
193  /* Table index indexed by software interface. */
195 
196  /** Table index indexed by software interface. */
198 
199  /* IP6 enabled count by software interface */
201 
202  /* Hash table mapping table id to fib index.
203  ID space is not necessarily dense; index space is dense. */
205 
206  /** Hash table mapping table id to multicast fib index.
207  ID space is not necessarily dense; index space is dense. */
209 
210  /* Hash table mapping interface rewrite adjacency index by sw if index. */
212 
213  /* Functions to call when interface address changes. */
216 
217  /** Functions to call when interface to table biding changes. */
219 
220  /* Template used to generate IP6 neighbor solicitation packets. */
222 
223  /* ip6 lookup table config parameters */
226 
227  /* Seed for Jenkins hash used to compute ip6 flow hash. */
229 
230  struct
231  {
232  /* TTL to use for host generated packets. */
234 
235  u8 pad[3];
236  } host_config;
237 
238  /* HBH processing enabled? */
240 
241  /** ND throttling */
243 } ip6_main_t;
244 
245 #define ND_THROTTLE_BITS 512
246 
247 /* Global ip6 main structure. */
248 extern ip6_main_t ip6_main;
249 
250 /* Global ip6 input node. Errors get attached to ip6 input node. */
258 
259 extern void ip6_forward_next_trace (vlib_main_t * vm,
260  vlib_node_runtime_t * node,
261  vlib_frame_t * frame,
262  vlib_rx_or_tx_t which_adj_index);
263 
266  const ip6_address_t * key,
267  const ip6_address_t * dest, uword dest_length)
268 {
269  int i;
270  for (i = 0; i < ARRAY_LEN (key->as_uword); i++)
271  {
272  if ((key->as_uword[i] ^ dest->as_uword[i]) & im->
273  fib_masks[dest_length].as_uword[i])
274  return 0;
275  }
276  return 1;
277 }
278 
281  ip6_address_t * key,
283 {
285  return ip6_destination_matches_route (im, key, a, ia->address_length);
286 }
287 
288 /* As above but allows for unaligned destinations (e.g. works right from IP header of packet). */
291  ip6_address_t * key,
292  ip6_address_t * dest,
293  uword dest_length)
294 {
295  int i;
296  for (i = 0; i < ARRAY_LEN (key->as_uword); i++)
297  {
298  if ((clib_mem_unaligned (&key->as_uword[i], uword) ^ dest->as_uword[i])
299  & im->fib_masks[dest_length].as_uword[i])
300  return 0;
301  }
302  return 1;
303 }
304 
305 extern int ip6_get_ll_address (u32 sw_if_index, ip6_address_t * addr);
306 
307 always_inline int
309  u32 sw_if_index,
310  const ip6_address_t * dst, ip6_address_t * src)
311 {
313  {
314  return ip6_get_ll_address (sw_if_index, src);
315  }
316  else
317  {
318  u32 if_add_index =
320  if (PREDICT_TRUE (if_add_index != ~0))
321  {
322  ip_interface_address_t *if_add =
323  pool_elt_at_index (lm->if_address_pool, if_add_index);
324  ip6_address_t *if_ip =
326  *src = *if_ip;
327  return (!0);
328  }
329  }
330 
331  src->as_u64[0] = 0;
332  src->as_u64[1] = 0;
333 
334  return (0);
335 }
336 
337 /* Find interface address which matches destination. */
340  ip6_address_t * dst,
341  u32 sw_if_index,
343  result_ia)
344 {
345  ip_lookup_main_t *lm = &im->lookup_main;
347  ip6_address_t *result = 0;
348 
349  /* *INDENT-OFF* */
350  foreach_ip_interface_address (lm, ia, sw_if_index,
351  1 /* honor unnumbered */,
352  ({
354  if (ip6_destination_matches_route (im, dst, a, ia->address_length))
355  {
356  result = a;
357  break;
358  }
359  }));
360  /* *INDENT-ON* */
361  if (result_ia)
362  *result_ia = result ? ia : 0;
363  return result;
364 }
365 
367  u32 sw_if_index,
368  ip6_address_t * address,
369  u32 address_length, u32 is_del);
370 void ip6_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable);
371 
372 /**
373  * @brie get first IPv6 interface address
374  */
376 
378 
380  u32 sw_if_index, u8 refresh);
381 
382 uword
384  u16 dst_port, u32 next_node_index);
385 
387  ip6_header_t * ip0,
388  int *bogus_lengthp);
389 
390 void ip6_register_protocol (u32 protocol, u32 node_index);
391 void ip6_unregister_protocol (u32 protocol);
392 void ip6_local_hop_by_hop_register_protocol (u32 protocol, u32 node_index);
393 
395 
397  u32 sw_if_index, u32 ai);
398 
399 always_inline void
401  u8 * mac)
402 {
403  ip->as_u64[0] = clib_host_to_net_u64 (0xFE80000000000000ULL);
404  /* Invert the "u" bit */
405  ip->as_u8[8] = mac[0] ^ (1 << 1);
406  ip->as_u8[9] = mac[1];
407  ip->as_u8[10] = mac[2];
408  ip->as_u8[11] = 0xFF;
409  ip->as_u8[12] = 0xFE;
410  ip->as_u8[13] = mac[3];
411  ip->as_u8[14] = mac[4];
412  ip->as_u8[15] = mac[5];
413 }
414 
415 always_inline void
417  ip6_address_t * ip)
418 {
419  /* Invert the previously inverted "u" bit */
420  mac[0] = ip->as_u8[8] ^ (1 << 1);
421  mac[1] = ip->as_u8[9];
422  mac[2] = ip->as_u8[10];
423  mac[3] = ip->as_u8[13];
424  mac[4] = ip->as_u8[14];
425  mac[5] = ip->as_u8[15];
426 }
427 
429  flow_hash_config_t flow_hash_config);
430 
431 clib_error_t *enable_ip6_interface (vlib_main_t * vm, u32 sw_if_index);
432 
434 
435 int ip6_interface_enabled (vlib_main_t * vm, u32 sw_if_index);
436 
438  u32 sw_if_index,
439  ip6_address_t * address);
440 
441 typedef int (*ip6_nd_change_event_cb_t) (u32 pool_index,
442  const mac_address_t * new_mac,
444  const ip6_address_t * address);
445 
448  u32 pid,
449  void *address_arg,
450  uword node_index,
451  uword type_opaque,
452  uword data, int is_add);
453 
454 int vnet_ip6_nd_term (vlib_main_t * vm,
455  vlib_node_runtime_t * node,
456  vlib_buffer_t * p0,
457  ethernet_header_t * eth,
458  ip6_header_t * ip, u32 sw_if_index, u16 bd_index);
459 
460 void send_ip6_na (vlib_main_t * vm, u32 sw_if_index);
462  const ip6_address_t * addr, u32 sw_if_index);
463 
464 u8 *format_ip6_forward_next_trace (u8 * s, va_list * args);
465 
467 
468 void ip6_punt_policer_add_del (u8 is_add, u32 policer_index);
469 void ip6_punt_redirect_add (u32 rx_sw_if_index,
470  u32 tx_sw_if_index, ip46_address_t * nh);
471 void ip6_punt_redirect_add_paths (u32 rx_sw_if_index,
473 void ip6_punt_redirect_del (u32 rx_sw_if_index);
474 
475 int vnet_set_ip6_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
476  u32 table_index);
478 
479 /* Compute flow hash. We'll use it to select which Sponge to use for this
480  flow. And other things. */
483  flow_hash_config_t flow_hash_config)
484 {
485  tcp_header_t *tcp;
486  u64 a, b, c;
487  u64 t1, t2;
488  uword is_tcp_udp = 0;
489  u8 protocol = ip->protocol;
490 
491  if (PREDICT_TRUE
492  ((ip->protocol == IP_PROTOCOL_TCP)
493  || (ip->protocol == IP_PROTOCOL_UDP)))
494  {
495  is_tcp_udp = 1;
496  tcp = (void *) (ip + 1);
497  }
498  else if (ip->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)
499  {
501  if ((hbh->protocol == IP_PROTOCOL_TCP) ||
502  (hbh->protocol == IP_PROTOCOL_UDP))
503  {
504  is_tcp_udp = 1;
505  tcp = (tcp_header_t *) ((u8 *) hbh + ((hbh->length + 1) << 3));
506  }
507  protocol = hbh->protocol;
508  }
509 
510  t1 = (ip->src_address.as_u64[0] ^ ip->src_address.as_u64[1]);
511  t1 = (flow_hash_config & IP_FLOW_HASH_SRC_ADDR) ? t1 : 0;
512 
513  t2 = (ip->dst_address.as_u64[0] ^ ip->dst_address.as_u64[1]);
514  t2 = (flow_hash_config & IP_FLOW_HASH_DST_ADDR) ? t2 : 0;
515 
516  a = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t2 : t1;
517  b = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t1 : t2;
518 
519  t1 = is_tcp_udp ? tcp->src : 0;
520  t2 = is_tcp_udp ? tcp->dst : 0;
521 
522  t1 = (flow_hash_config & IP_FLOW_HASH_SRC_PORT) ? t1 : 0;
523  t2 = (flow_hash_config & IP_FLOW_HASH_DST_PORT) ? t2 : 0;
524 
525  if (flow_hash_config & IP_FLOW_HASH_SYMMETRIC)
526  {
527  if (b < a)
528  {
529  c = a;
530  a = b;
531  b = c;
532  }
533  if (t2 < t1)
534  {
535  t2 += t1;
536  t1 = t2 - t1;
537  t2 = t2 - t1;
538  }
539  }
540 
541  b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? protocol : 0;
542  c = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ?
543  ((t1 << 16) | t2) : ((t2 << 16) | t1);
544 
545  hash_mix64 (a, b, c);
546  return (u32) c;
547 }
548 
549 /* ip6_locate_header
550  *
551  * This function is to search for the header specified by the protocol number
552  * in find_hdr_type.
553  * This is used to locate a specific IPv6 extension header
554  * or to find transport layer header.
555  * 1. If the find_hdr_type < 0 then it finds and returns the protocol number and
556  * offset stored in *offset of the transport or ESP header in the chain if
557  * found.
558  * 2. If a header with find_hdr_type > 0 protocol number is found then the
559  * offset is stored in *offset and protocol number of the header is
560  * returned.
561  * 3. If find_hdr_type is not found or packet is malformed or
562  * it is a non-first fragment -1 is returned.
563  */
564 always_inline int
566  ip6_header_t * ip0, int find_hdr_type, u32 * offset)
567 {
568  u8 next_proto = ip0->protocol;
569  u8 *next_header;
570  u8 done = 0;
571  u32 cur_offset;
572  u8 *temp_nxthdr = 0;
573  u32 exthdr_len = 0;
574 
575  next_header = ip6_next_header (ip0);
576  cur_offset = sizeof (ip6_header_t);
577  while (1)
578  {
579  done = (next_proto == find_hdr_type);
580  if (PREDICT_FALSE
581  (next_header >=
582  (u8 *) vlib_buffer_get_current (p0) + p0->current_length))
583  {
584  //A malicious packet could set an extension header with a too big size
585  return (-1);
586  }
587  if (done)
588  break;
589  if ((!ip6_ext_hdr (next_proto)) || next_proto == IP_PROTOCOL_IP6_NONXT)
590  {
591  if (find_hdr_type < 0)
592  break;
593  return -1;
594  }
595  if (next_proto == IP_PROTOCOL_IPV6_FRAGMENTATION)
596  {
597  ip6_frag_hdr_t *frag_hdr = (ip6_frag_hdr_t *) next_header;
598  u16 frag_off = ip6_frag_hdr_offset (frag_hdr);
599  /* Non first fragment return -1 */
600  if (frag_off)
601  return (-1);
602  exthdr_len = sizeof (ip6_frag_hdr_t);
603  temp_nxthdr = next_header + exthdr_len;
604  }
605  else if (next_proto == IP_PROTOCOL_IPSEC_AH)
606  {
607  exthdr_len =
608  ip6_ext_authhdr_len (((ip6_ext_header_t *) next_header));
609  temp_nxthdr = next_header + exthdr_len;
610  }
611  else
612  {
613  exthdr_len =
614  ip6_ext_header_len (((ip6_ext_header_t *) next_header));
615  temp_nxthdr = next_header + exthdr_len;
616  }
617  next_proto = ((ip6_ext_header_t *) next_header)->next_hdr;
618  next_header = temp_nxthdr;
619  cur_offset += exthdr_len;
620  }
621 
622  *offset = cur_offset;
623  return (next_proto);
624 }
625 
626 u8 *format_ip6_hop_by_hop_ext_hdr (u8 * s, va_list * args);
627 /*
628  * Hop-by-Hop handling
629  */
630 typedef struct
631 {
632  /* Array of function pointers to HBH option handling routines */
633  int (*options[256]) (vlib_buffer_t * b, ip6_header_t * ip,
635  u8 *(*trace[256]) (u8 * s, ip6_hop_by_hop_option_t * opt);
638 
640 
641 int ip6_hbh_register_option (u8 option,
642  int options (vlib_buffer_t * b,
643  ip6_header_t * ip,
645  u8 * trace (u8 * s,
646  ip6_hop_by_hop_option_t * opt));
647 int ip6_hbh_unregister_option (u8 option);
648 void ip6_hbh_set_next_override (uword next);
649 
650 /**
651  * Push IPv6 header to buffer
652  *
653  * @param vm - vlib_main
654  * @param b - buffer to write the header to
655  * @param src - source IP
656  * @param dst - destination IP
657  * @param prot - payload proto
658  *
659  * @return - pointer to start of IP header
660  */
661 always_inline void *
663  ip6_address_t * src, ip6_address_t * dst, int proto)
664 {
665  ip6_header_t *ip6h;
666  u16 payload_length;
667 
668  /* make some room */
669  ip6h = vlib_buffer_push_uninit (b, sizeof (ip6_header_t));
670 
672  clib_host_to_net_u32 (0x6 << 28);
673 
674  /* calculate ip6 payload length */
675  payload_length = vlib_buffer_length_in_chain (vm, b);
676  payload_length -= sizeof (*ip6h);
677 
678  ip6h->payload_length = clib_host_to_net_u16 (payload_length);
679 
680  ip6h->hop_limit = 0xff;
681  ip6h->protocol = proto;
683  sizeof (ip6h->src_address));
685  sizeof (ip6h->src_address));
686  b->flags |= VNET_BUFFER_F_IS_IP6;
687 
688  return ip6h;
689 }
690 
691 #endif /* included_ip_ip6_h */
692 
693 /*
694  * fd.io coding-style-patch-verification: ON
695  *
696  * Local Variables:
697  * eval: (c-set-style "gnu")
698  * End:
699  */
#define foreach_ip_interface_address(lm, a, sw_if_index, loop, body)
Definition: lookup.h:182
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:124
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:96
typedef address
Definition: ip_types.api:83
int ip6_address_compare(ip6_address_t *a1, ip6_address_t *a2)
Definition: ip46_cli.c:60
static vlib_cli_command_t trace
(constructor) VLIB_CLI_COMMAND (trace)
Definition: vlib_api_cli.c:870
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:2080
#define CLIB_CACHE_LINE_ALIGN_MARK(mark)
Definition: cache.h:60
ip6_fib_t * v6_fibs
Definition: ip6.h:185
vl_api_mac_address_t mac
Definition: l2.api:490
a
Definition: bitmap.h:538
void ip6_register_protocol(u32 protocol, u32 node_index)
Definition: ip6_forward.c:1447
#define IP_FLOW_HASH_SRC_PORT
Definition: lookup.h:64
u32 * mfib_index_by_sw_if_index
Table index indexed by software interface.
Definition: ip6.h:197
A representation of a path as described by a route producer.
Definition: fib_types.h:479
uword lookup_table_size
Definition: ip6.h:225
ip_interface_address_t * if_address_pool
Pool of addresses that are assigned to interfaces.
Definition: lookup.h:125
void ip6_hbh_set_next_override(uword next)
Definition: ip6_forward.c:2607
int vnet_set_ip6_classify_intfc(vlib_main_t *vm, u32 sw_if_index, u32 table_index)
Definition: ip6_forward.c:3003
vl_api_fib_path_nh_t nh
Definition: fib_types.api:126
void ip6_unregister_protocol(u32 protocol)
Definition: ip6_forward.c:1459
The table that stores ALL routes learned by the DP.
Definition: ip6.h:134
static void ip6_link_local_address_from_ethernet_mac_address(ip6_address_t *ip, u8 *mac)
Definition: ip6.h:400
#define PREDICT_TRUE(x)
Definition: clib.h:112
u32 flow_hash_seed
Definition: ip6.h:228
u8 as_u8[16]
Definition: ip6_packet.h:48
u64 as_u64[2]
Definition: ip6_packet.h:51
unsigned long u64
Definition: types.h:89
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:339
Definitions for all things IP (v4|v6) unicast and multicast lookup related.
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
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:2615
#define IP_FLOW_HASH_REVERSE_SRC_DST
Definition: lookup.h:66
int ip6_get_ll_address(u32 sw_if_index, ip6_address_t *addr)
u8 ttl
Definition: ip6.h:233
u8 * ip_enabled_by_sw_if_index
Definition: ip6.h:200
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:113
ip6_address_t * ip6_interface_first_address(ip6_main_t *im, u32 sw_if_index)
get first IPv6 interface address
Definition: ip6_forward.c:178
vlib_node_registration_t ip6_rewrite_node
(constructor) VLIB_REGISTER_NODE (ip6_rewrite_node)
Definition: ip6_forward.c:2088
vl_api_address_t src
Definition: gre.api:51
int i
#define IP_FLOW_HASH_DST_PORT
Definition: lookup.h:65
u8 data[128]
Definition: ipsec.api:249
struct ip6_mfib_t ip6_mfib_t
void send_ip6_na(vlib_main_t *vm, u32 sw_if_index)
void ip6_local_hop_by_hop_register_protocol(u32 protocol, u32 node_index)
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:366
struct _tcp_header tcp_header_t
ip6_address_t src_address
Definition: ip6_packet.h:383
u8 * prefix_lengths_in_search_order
Definition: ip6.h:149
unsigned char u8
Definition: types.h:56
uword as_uword[16/sizeof(uword)]
Definition: ip6_packet.h:52
u32 vrf_index
Definition: ip6.h:66
vlib_node_registration_t ip6_rewrite_mcast_node
(constructor) VLIB_REGISTER_NODE (ip6_rewrite_mcast_node)
Definition: ip6_forward.c:2110
vlib_packet_template_t discover_neighbor_packet_template
Definition: ip6.h:221
vlib_rx_or_tx_t
Definition: defs.h:44
int(* ip6_nd_change_event_cb_t)(u32 pool_index, const mac_address_t *new_mac, u32 sw_if_index, const ip6_address_t *address)
Definition: ip6.h:441
vlib_node_registration_t ip6_discover_neighbor_node
(constructor) VLIB_REGISTER_NODE (ip6_discover_neighbor_node)
u8 * format_ip6_hop_by_hop_ext_hdr(u8 *s, va_list *args)
Definition: ip6_forward.c:2172
clib_bihash_24_8_t ip6_hash
Definition: ip6.h:145
vl_api_interface_index_t sw_if_index
Definition: gre.api:50
#define IP_FLOW_HASH_DST_ADDR
Definition: lookup.h:62
#define always_inline
Definition: clib.h:98
void ip6_ethernet_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Definition: ip6_neighbor.c:609
ip6_hop_by_hop_main_t ip6_hop_by_hop_main
Definition: ip6_forward.c:2133
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:265
int ip6_interface_enabled(vlib_main_t *vm, u32 sw_if_index)
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:142
unsigned int u32
Definition: types.h:88
A represenation of a single IP6 mfib table.
Definition: ip6.h:156
clib_error_t * ip6_probe_neighbor(vlib_main_t *vm, ip6_address_t *dst, u32 sw_if_index, u8 refresh)
Definition: ip6_forward.c:1469
u32 lookup_table_nbuckets
Definition: ip6.h:224
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:109
int ip6_hbh_unregister_option(u8 option)
Definition: ip6_forward.c:2639
throttle_t nd_throttle
ND throttling.
Definition: ip6.h:242
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:514
uword * mfib_index_by_table_id
Hash table mapping table id to multicast fib index.
Definition: ip6.h:208
vlib_frame_t * data_callback(flow_report_main_t *frm, flow_report_t *fr, vlib_frame_t *f, u32 *to_next, u32 node_index)
vl_api_ip_proto_t protocol
Definition: punt.api:39
vlib_node_registration_t ip6_input_node
(constructor) VLIB_REGISTER_NODE (ip6_input_node)
Definition: ip6_input.c:230
unsigned short u16
Definition: types.h:57
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:229
vlib_node_registration_t ip6_glean_node
(constructor) VLIB_REGISTER_NODE (ip6_glean_node)
static u32 ip6_compute_flow_hash(const ip6_header_t *ip, flow_hash_config_t flow_hash_config)
Definition: ip6.h:482
ip6_table_bind_callback_t * table_bind_callbacks
Functions to call when interface to table biding changes.
Definition: ip6.h:218
#define PREDICT_FALSE(x)
Definition: clib.h:111
u32 index
Definition: ip6.h:78
A throttle Used in the data plane to decide if a given hash should be throttled, i.e.
Definition: throttle.h:28
ip6_add_del_interface_address_callback_t * add_del_interface_address_callbacks
Definition: ip6.h:215
Definition: ip6.h:81
#define ip6_ext_authhdr_len(p)
Definition: ip6_packet.h:547
uword * fib_index_by_table_id
Definition: ip6.h:204
#define ip6_ext_header_len(p)
Definition: ip6_packet.h:546
ip6_address_t fib_masks[129]
Definition: ip6.h:191
static int ip6_src_address_for_packet(ip_lookup_main_t *lm, u32 sw_if_index, const ip6_address_t *dst, ip6_address_t *src)
Definition: ip6.h:308
#define hash_mix64(a0, b0, c0)
Definition: hash.h:531
svmdb_client_t * c
Definition: ip6.h:69
This table stores the routes that are used to forward traffic.
Definition: ip6.h:127
void send_ip6_na_w_addr(vlib_main_t *vm, const ip6_address_t *addr, u32 sw_if_index)
u32 dst_address_length
Definition: ip6.h:65
u32 index
Definition: ip6.h:90
#define ARRAY_LEN(x)
Definition: clib.h:62
clib_error_t * enable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
u8 hbh_enabled
Definition: ip6.h:239
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:410
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:525
void ip6_punt_redirect_del(u32 rx_sw_if_index)
ip6_address_t addr
Definition: ip6.h:64
int vnet_add_del_ip6_nd_change_event(vnet_main_t *vnm, ip6_nd_change_event_cb_t data_callback, u32 pid, void *address_arg, uword node_index, uword type_opaque, uword data, int is_add)
#define IP_FLOW_HASH_SYMMETRIC
Definition: lookup.h:67
u32 * if_address_pool_index_by_sw_if_index
Head of doubly linked list of interface addresses for each software interface.
Definition: lookup.h:132
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:906
signed int i32
Definition: types.h:77
vlib_node_registration_t ip6_lookup_node
(constructor) VLIB_REGISTER_NODE (ip6_lookup_node)
Definition: ip6_forward.c:552
void ip6_punt_policer_add_del(u8 is_add, u32 policer_index)
#define ip6_frag_hdr_offset(hdr)
Definition: ip6_packet.h:598
#define IP6_FIB_NUM_TABLES
Definition: ip6.h:137
vlib buffer structure definition and a few select access methods.
#define IP_FLOW_HASH_SRC_ADDR
Flow hash configuration.
Definition: lookup.h:61
ip6_fib_table_instance_type_t_
Enumeration of the FIB table instance types.
Definition: ip6.h:121
serialize_function_t serialize_vnet_ip6_main
Definition: ip6.h:394
void ip6_punt_redirect_add_paths(u32 rx_sw_if_index, fib_route_path_t *paths)
ip6_main_t ip6_main
Definition: ip6_forward.c:2671
ip_lookup_main_t lookup_main
Definition: ip6.h:179
uword * non_empty_dst_address_length_bitmap
Definition: ip6.h:162
u16 * prefix_lengths_in_search_order
Definition: ip6.h:163
u32 table_id
Definition: ip6.h:87
struct ip6_main_t ip6_main_t
struct mfib_table_t_ * mfibs
Vector of MFIBs.
Definition: ip6.h:188
static uword ip6_address_is_link_local_unicast(const ip6_address_t *a)
Definition: ip6_packet.h:326
#define clib_mem_unaligned(pointer, type)
Definition: types.h:155
u32 flow_hash_config_t
A flow hash configuration is a mask of the flow hash options.
Definition: lookup.h:84
int vnet_set_ip6_flow_hash(u32 table_id, flow_hash_config_t flow_hash_config)
Definition: ip6_forward.c:2809
static int ip6_locate_header(vlib_buffer_t *p0, ip6_header_t *ip0, int find_hdr_type, u32 *offset)
Definition: ip6.h:565
vl_api_mfib_path_t paths[n_paths]
Definition: ip.api:458
static uword ip6_destination_matches_interface(ip6_main_t *im, ip6_address_t *key, ip_interface_address_t *ia)
Definition: ip6.h:280
struct _vlib_node_registration vlib_node_registration_t
template key/value backing page structure
Definition: bihash_doc.h:44
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:370
static void * vlib_buffer_push_uninit(vlib_buffer_t *b, u8 size)
Prepend uninitialized data to buffer.
Definition: buffer.h:335
struct ip6_mfib_table_instance_t_ ip6_mfib_table_instance_t
A represenation of a single IP6 mfib table.
u16 payload_length
Definition: ip6_packet.h:374
struct ip6_fib_table_instance_t_ ip6_fib_table_instance_t
A represenation of a single IP6 table.
vl_api_address_t ip
Definition: l2.api:489
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:662
serialize_function_t unserialize_vnet_ip6_main
Definition: ip6.h:394
u32 ip6_tcp_udp_icmp_validate_checksum(vlib_main_t *vm, vlib_buffer_t *p0)
Definition: ip6_forward.c:1004
static void ip6_ethernet_mac_address_from_link_local_address(u8 *mac, ip6_address_t *ip)
Definition: ip6.h:416
void( serialize_function_t)(serialize_main_t *m, va_list *va)
Definition: serialize.h:168
VLIB buffer representation.
Definition: buffer.h:102
u64 uword
Definition: types.h:112
typedef key
Definition: ipsec.api:245
uword * non_empty_dst_address_length_bitmap
Definition: ip6.h:148
clib_error_t * set_ip6_link_local_address(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *address)
uword * interface_route_adj_index_by_sw_if_index
Definition: ip6.h:211
ip6_mfib_table_instance_t ip6_mtable
the single MFIB table
Definition: ip6.h:177
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:814
u32 table_id
Definition: ip6.h:75
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:197
CLIB_CACHE_LINE_ALIGN_MARK(cacheline0)
u16 dst_port
Definition: udp.api:42
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:290
static void * ip_interface_address_get_address(ip_lookup_main_t *lm, ip_interface_address_t *a)
Definition: lookup.h:175
clib_error_t * disable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
struct fib_table_t_ * fibs
Definition: ip6.h:182
u32 * fib_index_by_sw_if_index
Definition: ip6.h:194
void ip6_sw_interface_enable_disable(u32 sw_if_index, u32 is_enable)
Definition: ip6_forward.c:146
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)
clib_bihash_40_8_t ip6_mhash
Definition: ip6.h:159
vl_api_fib_path_nh_proto_t proto
Definition: fib_types.api:125
ip6_address_t dst_address
Definition: ip6_packet.h:383
A protocol Independent FIB table.
Definition: fib_table.h:69
uword next_override
Definition: ip6.h:636
u8 * format_ip6_forward_next_trace(u8 *s, va_list *args)
Definition: ip6_forward.c:762