FD.io VPP  v19.01.3-6-g70449b9b9
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/buffer.h>
44 #include <vnet/ethernet/packet.h>
45 #include <vnet/ip/ip6_packet.h>
47 #include <vnet/ip/lookup.h>
48 #include <stdbool.h>
49 #include <vppinfra/bihash_24_8.h>
50 #include <vppinfra/bihash_40_8.h>
52 #include <vnet/util/radix.h>
53 #include <vnet/util/throttle.h>
54 
55 /*
56  * Default size of the ip6 fib hash table
57  */
58 #define IP6_FIB_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
59 #define IP6_FIB_DEFAULT_HASH_MEMORY_SIZE (32<<20)
60 
61 typedef struct
62 {
67 
68 typedef struct
69 {
70  /* required for pool_get_aligned. */
71  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
72 
73  /* Table ID (hash key) for this FIB. */
75 
76  /* Index into FIB vector. */
78 } ip6_fib_t;
79 
80 typedef struct ip6_mfib_t
81 {
82  /* required for pool_get_aligned. */
83  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
84 
85  /* Table ID (hash key) for this FIB. */
87 
88  /* Index into FIB vector. */
90 } ip6_mfib_t;
91 
92 struct ip6_main_t;
93 
95  (struct ip6_main_t * im,
96  uword opaque,
99  u32 address_length, u32 if_address_index, u32 is_del);
100 
101 typedef struct
102 {
106 
107 typedef void (ip6_table_bind_function_t)
108  (struct ip6_main_t * im,
109  uword opaque, u32 sw_if_index, u32 new_fib_index, u32 old_fib_index);
110 
111 typedef struct
112 {
116 
117 /**
118  * Enumeration of the FIB table instance types
119  */
121 {
122  /**
123  * This table stores the routes that are used to forward traffic.
124  * The key is the prefix, the result the adjacnecy to forward on.
125  */
127  /**
128  * The table that stores ALL routes learned by the DP.
129  * Some of these routes may not be ready to install in forwarding
130  * at a given time.
131  * The key in this table is the prefix, the result is the fib_entry_t
132  */
135 
136 #define IP6_FIB_NUM_TABLES (IP6_FIB_TABLE_NON_FWDING+1)
137 
138 /**
139  * A represenation of a single IP6 table
140  */
142 {
143  /* The hash table */
144  clib_bihash_24_8_t ip6_hash;
145 
146  /* bitmap / refcounts / vector of mask widths to search */
149  i32 dst_address_length_refcounts[129];
151 
152 /**
153  * A represenation of a single IP6 mfib table
154  */
156 {
157  /* The hash table */
158  clib_bihash_40_8_t ip6_mhash;
159 
160  /* bitmap / refcounts / vector of mask widths to search */
163  i32 dst_address_length_refcounts[257];
165 
166 typedef struct ip6_main_t
167 {
168  /**
169  * The two FIB tables; fwding and non-fwding
170  */
172 
173  /**
174  * the single MFIB table
175  */
177 
179 
180  /* Pool of FIBs. */
182 
183  /* Pool of V6 FIBs. */
185 
186  /** Vector of MFIBs. */
188 
189  /* Network byte orders subnet mask for each prefix length */
190  ip6_address_t fib_masks[129];
191 
192  /* Table index indexed by software interface. */
194 
195  /** Table index indexed by software interface. */
197 
198  /* IP6 enabled count by software interface */
200 
201  /* Hash table mapping table id to fib index.
202  ID space is not necessarily dense; index space is dense. */
204 
205  /** Hash table mapping table id to multicast fib index.
206  ID space is not necessarily dense; index space is dense. */
208 
209  /* Hash table mapping interface rewrite adjacency index by sw if index. */
211 
212  /* Functions to call when interface address changes. */
215 
216  /** Functions to call when interface to table biding changes. */
218 
219  /* Template used to generate IP6 neighbor solicitation packets. */
221 
222  /* ip6 lookup table config parameters */
225 
226  /* Seed for Jenkins hash used to compute ip6 flow hash. */
228 
229  struct
230  {
231  /* TTL to use for host generated packets. */
233 
234  u8 pad[3];
235  } host_config;
236 
237  /* HBH processing enabled? */
239 
240  /** ND throttling */
242 } ip6_main_t;
243 
244 #define ND_THROTTLE_BITS 512
245 
246 /* Global ip6 main structure. */
247 extern ip6_main_t ip6_main;
248 
249 /* Global ip6 input node. Errors get attached to ip6 input node. */
257 
258 extern void ip6_forward_next_trace (vlib_main_t * vm,
259  vlib_node_runtime_t * node,
260  vlib_frame_t * frame,
261  vlib_rx_or_tx_t which_adj_index);
262 
265  const ip6_address_t * key,
266  const ip6_address_t * dest, uword dest_length)
267 {
268  int i;
269  for (i = 0; i < ARRAY_LEN (key->as_uword); i++)
270  {
271  if ((key->as_uword[i] ^ dest->as_uword[i]) & im->
272  fib_masks[dest_length].as_uword[i])
273  return 0;
274  }
275  return 1;
276 }
277 
280  ip6_address_t * key,
282 {
284  return ip6_destination_matches_route (im, key, a, ia->address_length);
285 }
286 
287 /* As above but allows for unaligned destinations (e.g. works right from IP header of packet). */
290  ip6_address_t * key,
291  ip6_address_t * dest,
292  uword dest_length)
293 {
294  int i;
295  for (i = 0; i < ARRAY_LEN (key->as_uword); i++)
296  {
297  if ((clib_mem_unaligned (&key->as_uword[i], uword) ^ dest->as_uword[i])
298  & im->fib_masks[dest_length].as_uword[i])
299  return 0;
300  }
301  return 1;
302 }
303 
304 extern int ip6_get_ll_address (u32 sw_if_index, ip6_address_t * addr);
305 
306 always_inline int
308  u32 sw_if_index,
309  const ip6_address_t * dst, ip6_address_t * src)
310 {
312  {
313  return ip6_get_ll_address (sw_if_index, src);
314  }
315  else
316  {
317  u32 if_add_index =
319  if (PREDICT_TRUE (if_add_index != ~0))
320  {
321  ip_interface_address_t *if_add =
322  pool_elt_at_index (lm->if_address_pool, if_add_index);
323  ip6_address_t *if_ip =
325  *src = *if_ip;
326  return (!0);
327  }
328  }
329 
330  src->as_u64[0] = 0;
331  src->as_u64[1] = 0;
332 
333  return (0);
334 }
335 
336 /* Find interface address which matches destination. */
339  ip6_address_t * dst,
340  u32 sw_if_index,
342  result_ia)
343 {
344  ip_lookup_main_t *lm = &im->lookup_main;
346  ip6_address_t *result = 0;
347 
348  /* *INDENT-OFF* */
349  foreach_ip_interface_address (lm, ia, sw_if_index,
350  1 /* honor unnumbered */,
351  ({
353  if (ip6_destination_matches_route (im, dst, a, ia->address_length))
354  {
355  result = a;
356  break;
357  }
358  }));
359  /* *INDENT-ON* */
360  if (result_ia)
361  *result_ia = result ? ia : 0;
362  return result;
363 }
364 
366  u32 sw_if_index,
367  ip6_address_t * address,
368  u32 address_length, u32 is_del);
369 void ip6_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable);
370 
371 /**
372  * @brie get first IPv6 interface address
373  */
375 
377 
379  u32 sw_if_index, u8 refresh);
380 
381 uword
383  u16 dst_port, u32 next_node_index);
384 
386  ip6_header_t * ip0,
387  int *bogus_lengthp);
388 
389 void ip6_register_protocol (u32 protocol, u32 node_index);
390 
392 
394  u32 sw_if_index, u32 ai);
395 
396 
397 void
399  u8 * mac);
400 
401 void
403  ip6_address_t * ip);
404 
406  flow_hash_config_t flow_hash_config);
407 
408 clib_error_t *enable_ip6_interface (vlib_main_t * vm, u32 sw_if_index);
409 
411 
412 int ip6_interface_enabled (vlib_main_t * vm, u32 sw_if_index);
413 
415  u32 sw_if_index,
416  ip6_address_t * address);
417 
419  void *data_callback,
420  u32 pid,
421  void *address_arg,
422  uword node_index,
423  uword type_opaque,
424  uword data, int is_add);
425 
426 int vnet_ip6_nd_term (vlib_main_t * vm,
427  vlib_node_runtime_t * node,
428  vlib_buffer_t * p0,
429  ethernet_header_t * eth,
430  ip6_header_t * ip, u32 sw_if_index, u16 bd_index);
431 
432 void send_ip6_na (vlib_main_t * vm, u32 sw_if_index);
434  const ip6_address_t * addr, u32 sw_if_index);
435 
436 u8 *format_ip6_forward_next_trace (u8 * s, va_list * args);
437 
439 
440 void ip6_punt_policer_add_del (u8 is_add, u32 policer_index);
441 void ip6_punt_redirect_add (u32 rx_sw_if_index,
442  u32 tx_sw_if_index, ip46_address_t * nh);
443 void ip6_punt_redirect_del (u32 rx_sw_if_index);
444 
445 int vnet_set_ip6_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
446  u32 table_index);
448 
449 /* Compute flow hash. We'll use it to select which Sponge to use for this
450  flow. And other things. */
453  flow_hash_config_t flow_hash_config)
454 {
455  tcp_header_t *tcp;
456  u64 a, b, c;
457  u64 t1, t2;
458  uword is_tcp_udp = 0;
459  u8 protocol = ip->protocol;
460 
461  if (PREDICT_TRUE
462  ((ip->protocol == IP_PROTOCOL_TCP)
463  || (ip->protocol == IP_PROTOCOL_UDP)))
464  {
465  is_tcp_udp = 1;
466  tcp = (void *) (ip + 1);
467  }
468  else if (ip->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)
469  {
471  if ((hbh->protocol == IP_PROTOCOL_TCP) ||
472  (hbh->protocol == IP_PROTOCOL_UDP))
473  {
474  is_tcp_udp = 1;
475  tcp = (tcp_header_t *) ((u8 *) hbh + ((hbh->length + 1) << 3));
476  }
477  protocol = hbh->protocol;
478  }
479 
480  t1 = (ip->src_address.as_u64[0] ^ ip->src_address.as_u64[1]);
481  t1 = (flow_hash_config & IP_FLOW_HASH_SRC_ADDR) ? t1 : 0;
482 
483  t2 = (ip->dst_address.as_u64[0] ^ ip->dst_address.as_u64[1]);
484  t2 = (flow_hash_config & IP_FLOW_HASH_DST_ADDR) ? t2 : 0;
485 
486  a = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t2 : t1;
487  b = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t1 : t2;
488 
489  t1 = is_tcp_udp ? tcp->src : 0;
490  t2 = is_tcp_udp ? tcp->dst : 0;
491 
492  t1 = (flow_hash_config & IP_FLOW_HASH_SRC_PORT) ? t1 : 0;
493  t2 = (flow_hash_config & IP_FLOW_HASH_DST_PORT) ? t2 : 0;
494 
495  if (flow_hash_config & IP_FLOW_HASH_SYMMETRIC)
496  {
497  if (b < a)
498  {
499  c = a;
500  a = b;
501  b = c;
502  }
503  if (t2 < t1)
504  {
505  t2 += t1;
506  t1 = t2 - t1;
507  t2 = t2 - t1;
508  }
509  }
510 
511  b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? protocol : 0;
512  c = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ?
513  ((t1 << 16) | t2) : ((t2 << 16) | t1);
514 
515  hash_mix64 (a, b, c);
516  return (u32) c;
517 }
518 
519 /* ip6_locate_header
520  *
521  * This function is to search for the header specified by the protocol number
522  * in find_hdr_type.
523  * This is used to locate a specific IPv6 extension header
524  * or to find transport layer header.
525  * 1. If the find_hdr_type < 0 then it finds and returns the protocol number and
526  * offset stored in *offset of the transport or ESP header in the chain if
527  * found.
528  * 2. If a header with find_hdr_type > 0 protocol number is found then the
529  * offset is stored in *offset and protocol number of the header is
530  * returned.
531  * 3. If find_hdr_type is not found or packet is malformed or
532  * it is a non-first fragment -1 is returned.
533  */
534 always_inline int
536  ip6_header_t * ip0, int find_hdr_type, u32 * offset)
537 {
538  u8 next_proto = ip0->protocol;
539  u8 *next_header;
540  u8 done = 0;
541  u32 cur_offset;
542  u8 *temp_nxthdr = 0;
543  u32 exthdr_len = 0;
544 
545  next_header = ip6_next_header (ip0);
546  cur_offset = sizeof (ip6_header_t);
547  while (1)
548  {
549  done = (next_proto == find_hdr_type);
550  if (PREDICT_FALSE
551  (next_header >=
552  (u8 *) vlib_buffer_get_current (p0) + p0->current_length))
553  {
554  //A malicious packet could set an extension header with a too big size
555  return (-1);
556  }
557  if (done)
558  break;
559  if ((!ip6_ext_hdr (next_proto)) || next_proto == IP_PROTOCOL_IP6_NONXT)
560  {
561  if (find_hdr_type < 0)
562  break;
563  return -1;
564  }
565  if (next_proto == IP_PROTOCOL_IPV6_FRAGMENTATION)
566  {
567  ip6_frag_hdr_t *frag_hdr = (ip6_frag_hdr_t *) next_header;
568  u16 frag_off = ip6_frag_hdr_offset (frag_hdr);
569  /* Non first fragment return -1 */
570  if (frag_off)
571  return (-1);
572  exthdr_len = sizeof (ip6_frag_hdr_t);
573  temp_nxthdr = next_header + exthdr_len;
574  }
575  else if (next_proto == IP_PROTOCOL_IPSEC_AH)
576  {
577  exthdr_len =
578  ip6_ext_authhdr_len (((ip6_ext_header_t *) next_header));
579  temp_nxthdr = next_header + exthdr_len;
580  }
581  else
582  {
583  exthdr_len =
584  ip6_ext_header_len (((ip6_ext_header_t *) next_header));
585  temp_nxthdr = next_header + exthdr_len;
586  }
587  next_proto = ((ip6_ext_header_t *) next_header)->next_hdr;
588  next_header = temp_nxthdr;
589  cur_offset += exthdr_len;
590  }
591 
592  *offset = cur_offset;
593  return (next_proto);
594 }
595 
596 u8 *format_ip6_hop_by_hop_ext_hdr (u8 * s, va_list * args);
597 /*
598  * Hop-by-Hop handling
599  */
600 typedef struct
601 {
602  /* Array of function pointers to HBH option handling routines */
603  int (*options[256]) (vlib_buffer_t * b, ip6_header_t * ip,
605  u8 *(*trace[256]) (u8 * s, ip6_hop_by_hop_option_t * opt);
608 
610 
611 int ip6_hbh_register_option (u8 option,
612  int options (vlib_buffer_t * b,
613  ip6_header_t * ip,
615  u8 * trace (u8 * s,
616  ip6_hop_by_hop_option_t * opt));
617 int ip6_hbh_unregister_option (u8 option);
618 void ip6_hbh_set_next_override (uword next);
619 
620 /**
621  * Push IPv6 header to buffer
622  *
623  * @param vm - vlib_main
624  * @param b - buffer to write the header to
625  * @param src - source IP
626  * @param dst - destination IP
627  * @param prot - payload proto
628  *
629  * @return - pointer to start of IP header
630  */
631 always_inline void *
633  ip6_address_t * src, ip6_address_t * dst, int proto)
634 {
635  ip6_header_t *ip6h;
636  u16 payload_length;
637 
638  /* make some room */
639  ip6h = vlib_buffer_push_uninit (b, sizeof (ip6_header_t));
640 
642  clib_host_to_net_u32 (0x6 << 28);
643 
644  /* calculate ip6 payload length */
645  payload_length = vlib_buffer_length_in_chain (vm, b);
646  payload_length -= sizeof (*ip6h);
647 
648  ip6h->payload_length = clib_host_to_net_u16 (payload_length);
649 
650  ip6h->hop_limit = 0xff;
651  ip6h->protocol = proto;
653  sizeof (ip6h->src_address));
655  sizeof (ip6h->src_address));
656  b->flags |= VNET_BUFFER_F_IS_IP6;
657 
658  return ip6h;
659 }
660 
661 #endif /* included_ip_ip6_h */
662 
663 /*
664  * fd.io coding-style-patch-verification: ON
665  *
666  * Local Variables:
667  * eval: (c-set-style "gnu")
668  * End:
669  */
#define foreach_ip_interface_address(lm, a, sw_if_index, loop, body)
Definition: lookup.h:182
typedef address
Definition: ip_types.api:30
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:862
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:2023
#define CLIB_CACHE_LINE_ALIGN_MARK(mark)
Definition: cache.h:60
vl_api_address_t src
Definition: vxlan_gbp.api:32
ip6_fib_t * v6_fibs
Definition: ip6.h:184
a
Definition: bitmap.h:538
void ip6_register_protocol(u32 protocol, u32 node_index)
Definition: ip6_forward.c:1461
#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:196
uword lookup_table_size
Definition: ip6.h:224
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:2560
int vnet_set_ip6_classify_intfc(vlib_main_t *vm, u32 sw_if_index, u32 table_index)
Definition: ip6_forward.c:2981
The table that stores ALL routes learned by the DP.
Definition: ip6.h:133
#define PREDICT_TRUE(x)
Definition: clib.h:112
u32 flow_hash_seed
Definition: ip6.h:227
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:338
Definitions for all things IP (v4|v6) unicast and multicast lookup related.
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
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:2568
#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:232
u8 * ip_enabled_by_sw_if_index
Definition: ip6.h:199
ip6_address_t * ip6_interface_first_address(ip6_main_t *im, u32 sw_if_index)
get first IPv6 interface address
Definition: ip6_forward.c:174
vlib_node_registration_t ip6_rewrite_node
(constructor) VLIB_REGISTER_NODE (ip6_rewrite_node)
Definition: ip6_forward.c:2034
int i
#define IP_FLOW_HASH_DST_PORT
Definition: lookup.h:65
void() serialize_function_t(serialize_main_t *m, va_list *va)
Definition: serialize.h:168
struct ip6_mfib_t ip6_mfib_t
void send_ip6_na(vlib_main_t *vm, u32 sw_if_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:267
struct _tcp_header tcp_header_t
ip6_address_t src_address
Definition: ip6_packet.h:378
u8 * prefix_lengths_in_search_order
Definition: ip6.h:148
unsigned char u8
Definition: types.h:56
uword as_uword[16/sizeof(uword)]
Definition: ip6_packet.h:52
u32 vrf_index
Definition: ip6.h:65
vlib_node_registration_t ip6_rewrite_mcast_node
(constructor) VLIB_REGISTER_NODE (ip6_rewrite_mcast_node)
Definition: ip6_forward.c:2061
vlib_packet_template_t discover_neighbor_packet_template
Definition: ip6.h:220
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)
u8 * format_ip6_hop_by_hop_ext_hdr(u8 *s, va_list *args)
Definition: ip6_forward.c:2124
clib_bihash_24_8_t ip6_hash
Definition: ip6.h:144
#define IP_FLOW_HASH_DST_ADDR
Definition: lookup.h:62
u32 sw_if_index
Definition: vxlan_gbp.api:37
#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:624
ip6_hop_by_hop_main_t ip6_hop_by_hop_main
Definition: ip6_forward.c:2087
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:264
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:141
unsigned int u32
Definition: types.h:88
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:95
A represenation of a single IP6 mfib table.
Definition: ip6.h:155
clib_error_t * ip6_probe_neighbor(vlib_main_t *vm, ip6_address_t *dst, u32 sw_if_index, u8 refresh)
Definition: ip6_forward.c:1473
u32 lookup_table_nbuckets
Definition: ip6.h:223
int ip6_hbh_unregister_option(u8 option)
Definition: ip6_forward.c:2592
throttle_t nd_throttle
ND throttling.
Definition: ip6.h:241
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:511
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:108
uword * mfib_index_by_table_id
Hash table mapping table id to multicast fib index.
Definition: ip6.h:207
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:114
u8 address_length
Definition: ip_types.api:37
vlib_node_registration_t ip6_input_node
(constructor) VLIB_REGISTER_NODE (ip6_input_node)
Definition: ip6_input.c:228
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:214
void ip6_ethernet_mac_address_from_link_local_address(u8 *mac, ip6_address_t *ip)
Definition: ip6_forward.c:2737
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:452
ip6_table_bind_callback_t * table_bind_callbacks
Functions to call when interface to table biding changes.
Definition: ip6.h:217
#define PREDICT_FALSE(x)
Definition: clib.h:111
u32 index
Definition: ip6.h:77
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:214
Definition: ip6.h:80
#define ip6_ext_authhdr_len(p)
Definition: ip6_packet.h:522
void ip6_link_local_address_from_ethernet_mac_address(ip6_address_t *ip, u8 *mac)
Definition: ip6_forward.c:2721
uword * fib_index_by_table_id
Definition: ip6.h:203
#define ip6_ext_header_len(p)
Definition: ip6_packet.h:521
ip6_address_t fib_masks[129]
Definition: ip6.h:190
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:307
#define hash_mix64(a0, b0, c0)
Definition: hash.h:531
svmdb_client_t * c
Definition: ip6.h:68
This table stores the routes that are used to forward traffic.
Definition: ip6.h:126
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:64
u32 index
Definition: ip6.h:89
#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:238
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:405
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:509
void ip6_punt_redirect_del(u32 rx_sw_if_index)
ip6_address_t addr
Definition: ip6.h:63
#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:944
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:546
void ip6_punt_policer_add_del(u8 is_add, u32 policer_index)
#define ip6_frag_hdr_offset(hdr)
Definition: ip6_packet.h:573
#define IP6_FIB_NUM_TABLES
Definition: ip6.h:136
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:120
serialize_function_t serialize_vnet_ip6_main
Definition: ip6.h:391
ip6_main_t ip6_main
Definition: ip6_forward.c:2624
ip_lookup_main_t lookup_main
Definition: ip6.h:178
uword * non_empty_dst_address_length_bitmap
Definition: ip6.h:161
u16 * prefix_lengths_in_search_order
Definition: ip6.h:162
u32 table_id
Definition: ip6.h:86
struct ip6_main_t ip6_main_t
struct mfib_table_t_ * mfibs
Vector of MFIBs.
Definition: ip6.h:187
static uword ip6_address_is_link_local_unicast(const ip6_address_t *a)
Definition: ip6_packet.h:321
#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:2789
static int ip6_locate_header(vlib_buffer_t *p0, ip6_header_t *ip0, int find_hdr_type, u32 *offset)
Definition: ip6.h:535
static uword ip6_destination_matches_interface(ip6_main_t *im, ip6_address_t *key, ip_interface_address_t *ia)
Definition: ip6.h:279
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:365
static void * vlib_buffer_push_uninit(vlib_buffer_t *b, u8 size)
Prepend uninitialized data to buffer.
Definition: buffer.h:320
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:369
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:632
serialize_function_t unserialize_vnet_ip6_main
Definition: ip6.h:391
u32 ip6_tcp_udp_icmp_validate_checksum(vlib_main_t *vm, vlib_buffer_t *p0)
Definition: ip6_forward.c:1020
u64 uword
Definition: types.h:112
uword * non_empty_dst_address_length_bitmap
Definition: ip6.h:147
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:210
ip6_mfib_table_instance_t ip6_mtable
the single MFIB table
Definition: ip6.h:176
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:852
u32 table_id
Definition: ip6.h:74
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:193
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:289
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)
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:117
struct fib_table_t_ * fibs
Definition: ip6.h:181
vl_api_mac_address_t mac
Definition: gbp.api:118
u32 * fib_index_by_sw_if_index
Definition: ip6.h:193
void ip6_sw_interface_enable_disable(u32 sw_if_index, u32 is_enable)
Definition: ip6_forward.c:142
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:158
ip6_address_t dst_address
Definition: ip6_packet.h:378
A protocol Independent FIB table.
Definition: fib_table.h:69
uword next_override
Definition: ip6.h:606
u8 * format_ip6_forward_next_trace(u8 *s, va_list *args)
Definition: ip6_forward.c:802