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Vector Packet Processing
ip6_neighbor.c
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1 /*
2  * ip/ip6_neighbor.c: IP6 neighbor handling
3  *
4  * Copyright (c) 2010 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 #include <vnet/ip/ip.h>
19 #include <vnet/ip/ip6_neighbor.h>
20 #include <vnet/ethernet/ethernet.h>
21 #include <vppinfra/mhash.h>
22 #include <vppinfra/md5.h>
23 #include <vnet/adj/adj.h>
24 #include <vnet/adj/adj_mcast.h>
25 #include <vnet/fib/fib_table.h>
26 #include <vnet/fib/ip6_fib.h>
27 #include <vnet/mfib/ip6_mfib.h>
28 
29 /**
30  * @file
31  * @brief IPv6 Neighbor Adjacency and Neighbor Discovery.
32  *
33  * The files contains the API and CLI code for managing IPv6 neighbor
34  * adjacency tables and neighbor discovery logic.
35  */
36 
37 /* can't use sizeof link_layer_address, that's 8 */
38 #define ETHER_MAC_ADDR_LEN 6
39 
40 /* advertised prefix option */
41 typedef struct
42 {
43  /* basic advertised information */
44  ip6_address_t prefix;
45  u8 prefix_len;
46  int adv_on_link_flag;
47  int adv_autonomous_flag;
48  u32 adv_valid_lifetime_in_secs;
49  u32 adv_pref_lifetime_in_secs;
50 
51  /* advertised values are computed from these times if decrementing */
52  f64 valid_lifetime_expires;
53  f64 pref_lifetime_expires;
54 
55  /* local information */
56  int enabled;
57  int deprecated_prefix_flag;
58  int decrement_lifetime_flag;
59 
60 #define MIN_ADV_VALID_LIFETIME 7203 /* seconds */
61 #define DEF_ADV_VALID_LIFETIME 2592000
62 #define DEF_ADV_PREF_LIFETIME 604800
63 
64  /* extensions are added here, mobile, DNS etc.. */
65 } ip6_radv_prefix_t;
66 
67 
68 typedef struct
69 {
70  /* group information */
71  u8 type;
72  ip6_address_t mcast_address;
73  u16 num_sources;
74  ip6_address_t *mcast_source_address_pool;
75 } ip6_mldp_group_t;
76 
77 /* configured router advertisement information per ipv6 interface */
78 typedef struct
79 {
80 
81  /* advertised config information, zero means unspecified */
82  u8 curr_hop_limit;
83  int adv_managed_flag;
84  int adv_other_flag;
85  u16 adv_router_lifetime_in_sec;
86  u32 adv_neighbor_reachable_time_in_msec;
87  u32 adv_time_in_msec_between_retransmitted_neighbor_solicitations;
88 
89  /* mtu option */
90  u32 adv_link_mtu;
91 
92  /* source link layer option */
93  u8 link_layer_address[8];
94  u8 link_layer_addr_len;
95 
96  /* prefix option */
97  ip6_radv_prefix_t *adv_prefixes_pool;
98 
99  /* Hash table mapping address to index in interface advertised prefix pool. */
100  mhash_t address_to_prefix_index;
101 
102  /* MLDP group information */
103  ip6_mldp_group_t *mldp_group_pool;
104 
105  /* Hash table mapping address to index in mldp address pool. */
106  mhash_t address_to_mldp_index;
107 
108  /* local information */
109  u32 sw_if_index;
110  int send_radv; /* radv on/off on this interface - set by config */
111  int cease_radv; /* we are ceasing to send - set byf config */
112  int send_unicast;
113  int adv_link_layer_address;
114  int prefix_option;
115  int failed_device_check;
116  int all_routers_mcast;
117  u32 seed;
118  u64 randomizer;
119  int ref_count;
120  adj_index_t mcast_adj_index;
121 
122  /* timing information */
123 #define DEF_MAX_RADV_INTERVAL 200
124 #define DEF_MIN_RADV_INTERVAL .75 * DEF_MAX_RADV_INTERVAL
125 #define DEF_CURR_HOP_LIMIT 64
126 #define DEF_DEF_RTR_LIFETIME 3 * DEF_MAX_RADV_INTERVAL
127 #define MAX_DEF_RTR_LIFETIME 9000
128 
129 #define MAX_INITIAL_RTR_ADVERT_INTERVAL 16 /* seconds */
130 #define MAX_INITIAL_RTR_ADVERTISEMENTS 3 /*transmissions */
131 #define MIN_DELAY_BETWEEN_RAS 3 /* seconds */
132 #define MAX_DELAY_BETWEEN_RAS 1800 /* seconds */
133 #define MAX_RA_DELAY_TIME .5 /* seconds */
134 
135  f64 max_radv_interval;
136  f64 min_radv_interval;
137  f64 min_delay_between_radv;
138  f64 max_delay_between_radv;
139  f64 max_rtr_default_lifetime;
140 
141  f64 last_radv_time;
142  f64 last_multicast_time;
143  f64 next_multicast_time;
144 
145 
146  u32 initial_adverts_count;
147  f64 initial_adverts_interval;
148  u32 initial_adverts_sent;
149 
150  /* stats */
151  u32 n_advertisements_sent;
152  u32 n_solicitations_rcvd;
153  u32 n_solicitations_dropped;
154 
155  /* Link local address to use (defaults to underlying physical for logical interfaces */
156  ip6_address_t link_local_address;
157 } ip6_radv_t;
158 
159 typedef struct
160 {
161  u32 next_index;
162  uword node_index;
163  uword type_opaque;
164  uword data;
165  /* Used for nd event notification only */
166  void *data_callback;
167  u32 pid;
168 } pending_resolution_t;
169 
170 
171 typedef struct
172 {
173  /* Hash tables mapping name to opcode. */
174  uword *opcode_by_name;
175 
176  /* lite beer "glean" adjacency handling */
177  mhash_t pending_resolutions_by_address;
178  pending_resolution_t *pending_resolutions;
179 
180  /* Mac address change notification */
181  mhash_t mac_changes_by_address;
182  pending_resolution_t *mac_changes;
183 
184  u32 *neighbor_input_next_index_by_hw_if_index;
185 
186  ip6_neighbor_t *neighbor_pool;
187 
188  mhash_t neighbor_index_by_key;
189 
190  u32 *if_radv_pool_index_by_sw_if_index;
191 
192  ip6_radv_t *if_radv_pool;
193 
194  /* Neighbor attack mitigation */
195  u32 limit_neighbor_cache_size;
196  u32 neighbor_delete_rotor;
197 
198 } ip6_neighbor_main_t;
199 
200 /* ipv6 neighbor discovery - timer/event types */
201 typedef enum
202 {
203  ICMP6_ND_EVENT_INIT,
204 } ip6_icmp_neighbor_discovery_event_type_t;
205 
206 typedef union
207 {
208  u32 add_del_swindex;
209  struct
210  {
211  u32 up_down_swindex;
212  u32 fib_index;
213  } up_down_event;
214 } ip6_icmp_neighbor_discovery_event_data_t;
215 
216 static ip6_neighbor_main_t ip6_neighbor_main;
217 static ip6_address_t ip6a_zero; /* ip6 address 0 */
218 
219 static u8 *
220 format_ip6_neighbor_ip6_entry (u8 * s, va_list * va)
221 {
222  vlib_main_t *vm = va_arg (*va, vlib_main_t *);
223  ip6_neighbor_t *n = va_arg (*va, ip6_neighbor_t *);
224  vnet_main_t *vnm = vnet_get_main ();
225  vnet_sw_interface_t *si;
226  u8 *flags = 0;
227 
228  if (!n)
229  return format (s, "%=12s%=20s%=6s%=20s%=40s", "Time", "Address", "Flags",
230  "Link layer", "Interface");
231 
232  if (n->flags & IP6_NEIGHBOR_FLAG_DYNAMIC)
233  flags = format (flags, "D");
234 
235  if (n->flags & IP6_NEIGHBOR_FLAG_STATIC)
236  flags = format (flags, "S");
237 
238  if (n->flags & IP6_NEIGHBOR_FLAG_NO_FIB_ENTRY)
239  flags = format (flags, "N");
240 
241  si = vnet_get_sw_interface (vnm, n->key.sw_if_index);
242  s = format (s, "%=12U%=20U%=6s%=20U%=40U",
243  format_vlib_cpu_time, vm, n->cpu_time_last_updated,
244  format_ip6_address, &n->key.ip6_address,
245  flags ? (char *) flags : "",
246  format_ethernet_address, n->link_layer_address,
247  format_vnet_sw_interface_name, vnm, si);
248 
249  vec_free (flags);
250  return s;
251 }
252 
253 static clib_error_t *
254 ip6_neighbor_sw_interface_up_down (vnet_main_t * vnm,
255  u32 sw_if_index, u32 flags)
256 {
257  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
258  ip6_neighbor_t *n;
259 
260  if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
261  {
262  u32 i, *to_delete = 0;
263 
264  /* *INDENT-OFF* */
265  pool_foreach (n, nm->neighbor_pool,
266  ({
267  if (n->key.sw_if_index == sw_if_index)
268  vec_add1 (to_delete, n - nm->neighbor_pool);
269  }));
270  /* *INDENT-ON* */
271 
272  for (i = 0; i < vec_len (to_delete); i++)
273  {
274  n = pool_elt_at_index (nm->neighbor_pool, to_delete[i]);
275  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
276  fib_table_entry_delete_index (n->fib_entry_index, FIB_SOURCE_ADJ);
277  pool_put (nm->neighbor_pool, n);
278  }
279 
280  vec_free (to_delete);
281  }
282 
283  return 0;
284 }
285 
286 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (ip6_neighbor_sw_interface_up_down);
287 
288 static void
289 unset_random_neighbor_entry (void)
290 {
291  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
292  vnet_main_t *vnm = vnet_get_main ();
293  vlib_main_t *vm = vnm->vlib_main;
294  ip6_neighbor_t *e;
295  u32 index;
296 
297  index = pool_next_index (nm->neighbor_pool, nm->neighbor_delete_rotor);
298  nm->neighbor_delete_rotor = index;
299 
300  /* Try again from elt 0, could happen if an intfc goes down */
301  if (index == ~0)
302  {
303  index = pool_next_index (nm->neighbor_pool, nm->neighbor_delete_rotor);
304  nm->neighbor_delete_rotor = index;
305  }
306 
307  /* Nothing left in the pool */
308  if (index == ~0)
309  return;
310 
311  e = pool_elt_at_index (nm->neighbor_pool, index);
312 
313  vnet_unset_ip6_ethernet_neighbor (vm, e->key.sw_if_index,
314  &e->key.ip6_address,
315  e->link_layer_address,
316  ETHER_MAC_ADDR_LEN);
317 }
318 
319 typedef struct
320 {
321  u8 is_add;
322  u8 is_static;
323  u8 is_no_fib_entry;
324  u8 link_layer_address[6];
325  u32 sw_if_index;
326  ip6_address_t addr;
327 } ip6_neighbor_set_unset_rpc_args_t;
328 
329 static void ip6_neighbor_set_unset_rpc_callback
330  (ip6_neighbor_set_unset_rpc_args_t * a);
331 
332 static void set_unset_ip6_neighbor_rpc
333  (vlib_main_t * vm,
334  u32 sw_if_index,
335  ip6_address_t * a, u8 * link_layer_address, int is_add, int is_static,
336  int is_no_fib_entry)
337 {
338  ip6_neighbor_set_unset_rpc_args_t args;
339  void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
340 
341  args.sw_if_index = sw_if_index;
342  args.is_add = is_add;
343  args.is_static = is_static;
344  args.is_no_fib_entry = is_no_fib_entry;
345  clib_memcpy (&args.addr, a, sizeof (*a));
346  if (NULL != link_layer_address)
347  clib_memcpy (args.link_layer_address, link_layer_address, 6);
348 
349  vl_api_rpc_call_main_thread (ip6_neighbor_set_unset_rpc_callback,
350  (u8 *) & args, sizeof (args));
351 }
352 
353 static void
354 ip6_nbr_probe (ip_adjacency_t * adj)
355 {
356  icmp6_neighbor_solicitation_header_t *h;
357  vnet_main_t *vnm = vnet_get_main ();
358  ip6_main_t *im = &ip6_main;
359  ip_interface_address_t *ia;
360  ip6_address_t *dst, *src;
361  vnet_hw_interface_t *hi;
362  vnet_sw_interface_t *si;
363  vlib_buffer_t *b;
364  int bogus_length;
365  vlib_main_t *vm;
366  u32 bi = 0;
367 
368  vm = vlib_get_main ();
369 
370  si = vnet_get_sw_interface (vnm, adj->rewrite_header.sw_if_index);
371  dst = &adj->sub_type.nbr.next_hop.ip6;
372 
373  if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
374  {
375  return;
376  }
377  src = ip6_interface_address_matching_destination (im, dst,
378  adj->rewrite_header.
379  sw_if_index, &ia);
380  if (!src)
381  {
382  return;
383  }
384 
385  h = vlib_packet_template_get_packet (vm,
386  &im->discover_neighbor_packet_template,
387  &bi);
388 
389  hi = vnet_get_sup_hw_interface (vnm, adj->rewrite_header.sw_if_index);
390 
391  h->ip.dst_address.as_u8[13] = dst->as_u8[13];
392  h->ip.dst_address.as_u8[14] = dst->as_u8[14];
393  h->ip.dst_address.as_u8[15] = dst->as_u8[15];
394  h->ip.src_address = src[0];
395  h->neighbor.target_address = dst[0];
396 
397  clib_memcpy (h->link_layer_option.ethernet_address,
398  hi->hw_address, vec_len (hi->hw_address));
399 
400  h->neighbor.icmp.checksum =
401  ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h->ip, &bogus_length);
402  ASSERT (bogus_length == 0);
403 
404  b = vlib_get_buffer (vm, bi);
405  vnet_buffer (b)->sw_if_index[VLIB_RX] =
406  vnet_buffer (b)->sw_if_index[VLIB_TX] = adj->rewrite_header.sw_if_index;
407 
408  /* Add encapsulation string for software interface (e.g. ethernet header). */
409  vnet_rewrite_one_header (adj[0], h, sizeof (ethernet_header_t));
410  vlib_buffer_advance (b, -adj->rewrite_header.data_bytes);
411 
412  {
413  vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index);
414  u32 *to_next = vlib_frame_vector_args (f);
415  to_next[0] = bi;
416  f->n_vectors = 1;
417  vlib_put_frame_to_node (vm, hi->output_node_index, f);
418  }
419 }
420 
421 static void
422 ip6_nd_mk_complete (adj_index_t ai, ip6_neighbor_t * nbr)
423 {
424  adj_nbr_update_rewrite (ai, ADJ_NBR_REWRITE_FLAG_COMPLETE,
425  ethernet_build_rewrite (vnet_get_main (),
426  nbr->key.sw_if_index,
427  adj_get_link_type (ai),
428  nbr->link_layer_address));
429 }
430 
431 static void
432 ip6_nd_mk_incomplete (adj_index_t ai)
433 {
434  ip_adjacency_t *adj = adj_get (ai);
435 
436  adj_nbr_update_rewrite (ai,
437  ADJ_NBR_REWRITE_FLAG_INCOMPLETE,
438  ethernet_build_rewrite (vnet_get_main (),
439  adj->rewrite_header.
440  sw_if_index,
441  adj_get_link_type (ai),
442  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
443 }
444 
445 #define IP6_NBR_MK_KEY(k, sw_if_index, addr) \
446 { \
447  k.sw_if_index = sw_if_index; \
448  k.ip6_address = *addr; \
449  k.pad = 0; \
450 }
451 
452 static ip6_neighbor_t *
453 ip6_nd_find (u32 sw_if_index, const ip6_address_t * addr)
454 {
455  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
456  ip6_neighbor_t *n = NULL;
457  ip6_neighbor_key_t k;
458  uword *p;
459 
460  IP6_NBR_MK_KEY (k, sw_if_index, addr);
461 
462  p = mhash_get (&nm->neighbor_index_by_key, &k);
463  if (p)
464  {
465  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
466  }
467 
468  return (n);
469 }
470 
471 static adj_walk_rc_t
472 ip6_nd_mk_complete_walk (adj_index_t ai, void *ctx)
473 {
474  ip6_neighbor_t *nbr = ctx;
475 
476  ip6_nd_mk_complete (ai, nbr);
477 
478  return (ADJ_WALK_RC_CONTINUE);
479 }
480 
481 static adj_walk_rc_t
482 ip6_nd_mk_incomplete_walk (adj_index_t ai, void *ctx)
483 {
484  ip6_nd_mk_incomplete (ai);
485 
486  return (ADJ_WALK_RC_CONTINUE);
487 }
488 
489 void
490 ip6_ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
491 {
492  ip6_neighbor_t *nbr;
493  ip_adjacency_t *adj;
494 
495  adj = adj_get (ai);
496 
497  nbr = ip6_nd_find (sw_if_index, &adj->sub_type.nbr.next_hop.ip6);
498 
499  switch (adj->lookup_next_index)
500  {
501  case IP_LOOKUP_NEXT_ARP:
502  case IP_LOOKUP_NEXT_GLEAN:
503  if (NULL != nbr)
504  {
505  adj_nbr_walk_nh6 (sw_if_index, &nbr->key.ip6_address,
506  ip6_nd_mk_complete_walk, nbr);
507  }
508  else
509  {
510  /*
511  * no matching ND entry.
512  * construct the rewrite required to for an ND packet, and stick
513  * that in the adj's pipe to smoke.
514  */
515  adj_nbr_update_rewrite (ai,
516  ADJ_NBR_REWRITE_FLAG_INCOMPLETE,
517  ethernet_build_rewrite (vnm,
518  sw_if_index,
519  VNET_LINK_IP6,
520  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
521 
522  /*
523  * since the FIB has added this adj for a route, it makes sense it may
524  * want to forward traffic sometime soon. Let's send a speculative ND.
525  * just one. If we were to do periodically that wouldn't be bad either,
526  * but that's more code than i'm prepared to write at this time for
527  * relatively little reward.
528  */
529  ip6_nbr_probe (adj);
530  }
531  break;
532  case IP_LOOKUP_NEXT_MCAST:
533  /*
534  * Construct a partial rewrite from the known ethernet mcast dest MAC
535  */
536  adj_mcast_update_rewrite
537  (ai,
538  ethernet_build_rewrite (vnm,
539  sw_if_index,
540  adj->ia_link,
541  ethernet_ip6_mcast_dst_addr ()));
542 
543  /*
544  * Complete the remaining fields of the adj's rewrite to direct the
545  * complete of the rewrite at switch time by copying in the IP
546  * dst address's bytes.
547  * Ofset is 12 bytes from the end of the MAC header - which is 2
548  * bytes into the desintation address. And we write 4 bytes.
549  */
550  adj->rewrite_header.dst_mcast_offset = 12;
551  adj->rewrite_header.dst_mcast_n_bytes = 4;
552 
553  break;
554 
555  case IP_LOOKUP_NEXT_DROP:
556  case IP_LOOKUP_NEXT_PUNT:
557  case IP_LOOKUP_NEXT_LOCAL:
558  case IP_LOOKUP_NEXT_REWRITE:
559  case IP_LOOKUP_NEXT_LOAD_BALANCE:
560  case IP_LOOKUP_NEXT_MIDCHAIN:
561  case IP_LOOKUP_NEXT_ICMP_ERROR:
562  case IP_LOOKUP_N_NEXT:
563  ASSERT (0);
564  break;
565  }
566 }
567 
568 int
569 vnet_set_ip6_ethernet_neighbor (vlib_main_t * vm,
570  u32 sw_if_index,
571  ip6_address_t * a,
572  u8 * link_layer_address,
573  uword n_bytes_link_layer_address,
574  int is_static, int is_no_fib_entry)
575 {
576  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
577  ip6_neighbor_key_t k;
578  ip6_neighbor_t *n = 0;
579  int make_new_nd_cache_entry = 1;
580  uword *p;
581  u32 next_index;
582  pending_resolution_t *pr, *mc;
583 
584  if (os_get_cpu_number ())
585  {
586  set_unset_ip6_neighbor_rpc (vm, sw_if_index, a, link_layer_address,
587  1 /* set new neighbor */ , is_static,
588  is_no_fib_entry);
589  return 0;
590  }
591 
592  k.sw_if_index = sw_if_index;
593  k.ip6_address = a[0];
594  k.pad = 0;
595 
596  p = mhash_get (&nm->neighbor_index_by_key, &k);
597  if (p)
598  {
599  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
600  /* Refuse to over-write static neighbor entry. */
601  if (!is_static && (n->flags & IP6_NEIGHBOR_FLAG_STATIC))
602  return -2;
603  make_new_nd_cache_entry = 0;
604  }
605 
606  if (make_new_nd_cache_entry)
607  {
608  pool_get (nm->neighbor_pool, n);
609  mhash_set (&nm->neighbor_index_by_key, &k, n - nm->neighbor_pool,
610  /* old value */ 0);
611  n->key = k;
612 
613  clib_memcpy (n->link_layer_address,
614  link_layer_address, n_bytes_link_layer_address);
615 
616  /*
617  * create the adj-fib. the entry in the FIB table for and to the peer.
618  */
619  if (!is_no_fib_entry)
620  {
621  fib_prefix_t pfx = {
622  .fp_len = 128,
623  .fp_proto = FIB_PROTOCOL_IP6,
624  .fp_addr.ip6 = k.ip6_address,
625  };
626  u32 fib_index;
627 
628  fib_index = ip6_main.fib_index_by_sw_if_index[n->key.sw_if_index];
629  n->fib_entry_index =
630  fib_table_entry_update_one_path (fib_index, &pfx,
631  FIB_SOURCE_ADJ,
632  FIB_ENTRY_FLAG_NONE,
633  FIB_PROTOCOL_IP6, &pfx.fp_addr,
634  n->key.sw_if_index, ~0, 1, NULL,
635  FIB_ROUTE_PATH_FLAG_NONE);
636  n->flags |= IP6_NEIGHBOR_FLAG_NO_FIB_ENTRY;
637  }
638  }
639  else
640  {
641  /*
642  * prevent a DoS attack from the data-plane that
643  * spams us with no-op updates to the MAC address
644  */
645  if (0 == memcmp (n->link_layer_address,
646  link_layer_address, n_bytes_link_layer_address))
647  return -1;
648 
649  clib_memcpy (n->link_layer_address,
650  link_layer_address, n_bytes_link_layer_address);
651  }
652 
653  /* Update time stamp and flags. */
654  n->cpu_time_last_updated = clib_cpu_time_now ();
655  if (is_static)
656  n->flags |= IP6_NEIGHBOR_FLAG_STATIC;
657  else
658  n->flags |= IP6_NEIGHBOR_FLAG_DYNAMIC;
659 
660  adj_nbr_walk_nh6 (sw_if_index,
661  &n->key.ip6_address, ip6_nd_mk_complete_walk, n);
662 
663  /* Customer(s) waiting for this address to be resolved? */
664  p = mhash_get (&nm->pending_resolutions_by_address, a);
665  if (p)
666  {
667  next_index = p[0];
668 
669  while (next_index != (u32) ~ 0)
670  {
671  pr = pool_elt_at_index (nm->pending_resolutions, next_index);
672  vlib_process_signal_event (vm, pr->node_index,
673  pr->type_opaque, pr->data);
674  next_index = pr->next_index;
675  pool_put (nm->pending_resolutions, pr);
676  }
677 
678  mhash_unset (&nm->pending_resolutions_by_address, a, 0);
679  }
680 
681  /* Customer(s) requesting ND event for this address? */
682  p = mhash_get (&nm->mac_changes_by_address, a);
683  if (p)
684  {
685  next_index = p[0];
686 
687  while (next_index != (u32) ~ 0)
688  {
689  int (*fp) (u32, u8 *, u32, ip6_address_t *);
690  int rv = 1;
691  mc = pool_elt_at_index (nm->mac_changes, next_index);
692  fp = mc->data_callback;
693 
694  /* Call the user's data callback, return 1 to suppress dup events */
695  if (fp)
696  rv =
697  (*fp) (mc->data, link_layer_address, sw_if_index, &ip6a_zero);
698  /*
699  * Signal the resolver process, as long as the user
700  * says they want to be notified
701  */
702  if (rv == 0)
703  vlib_process_signal_event (vm, mc->node_index,
704  mc->type_opaque, mc->data);
705  next_index = mc->next_index;
706  }
707  }
708 
709  return 0;
710 }
711 
712 int
713 vnet_unset_ip6_ethernet_neighbor (vlib_main_t * vm,
714  u32 sw_if_index,
715  ip6_address_t * a,
716  u8 * link_layer_address,
717  uword n_bytes_link_layer_address)
718 {
719  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
720  ip6_neighbor_key_t k;
721  ip6_neighbor_t *n;
722  uword *p;
723  int rv = 0;
724 
725  if (os_get_cpu_number ())
726  {
727  set_unset_ip6_neighbor_rpc (vm, sw_if_index, a, link_layer_address,
728  0 /* unset */ , 0, 0);
729  return 0;
730  }
731 
732  k.sw_if_index = sw_if_index;
733  k.ip6_address = a[0];
734  k.pad = 0;
735 
736  p = mhash_get (&nm->neighbor_index_by_key, &k);
737  if (p == 0)
738  {
739  rv = -1;
740  goto out;
741  }
742 
743  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
744  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
745 
746  adj_nbr_walk_nh6 (sw_if_index,
747  &n->key.ip6_address, ip6_nd_mk_incomplete_walk, NULL);
748 
749  fib_table_entry_delete_index (n->fib_entry_index, FIB_SOURCE_ADJ);
750  pool_put (nm->neighbor_pool, n);
751 
752 out:
753  return rv;
754 }
755 
756 static void ip6_neighbor_set_unset_rpc_callback
757  (ip6_neighbor_set_unset_rpc_args_t * a)
758 {
759  vlib_main_t *vm = vlib_get_main ();
760  if (a->is_add)
761  vnet_set_ip6_ethernet_neighbor (vm, a->sw_if_index, &a->addr,
762  a->link_layer_address, 6, a->is_static,
763  a->is_no_fib_entry);
764  else
765  vnet_unset_ip6_ethernet_neighbor (vm, a->sw_if_index, &a->addr,
766  a->link_layer_address, 6);
767 }
768 
769 static int
770 ip6_neighbor_sort (void *a1, void *a2)
771 {
772  vnet_main_t *vnm = vnet_get_main ();
773  ip6_neighbor_t *n1 = a1, *n2 = a2;
774  int cmp;
775  cmp = vnet_sw_interface_compare (vnm, n1->key.sw_if_index,
776  n2->key.sw_if_index);
777  if (!cmp)
778  cmp = ip6_address_compare (&n1->key.ip6_address, &n2->key.ip6_address);
779  return cmp;
780 }
781 
782 ip6_neighbor_t *
783 ip6_neighbors_entries (u32 sw_if_index)
784 {
785  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
786  ip6_neighbor_t *n, *ns = 0;
787 
788  /* *INDENT-OFF* */
789  pool_foreach (n, nm->neighbor_pool,
790  ({
791  if (sw_if_index != ~0 && n->key.sw_if_index != sw_if_index)
792  continue;
793  vec_add1 (ns, n[0]);
794  }));
795  /* *INDENT-ON* */
796 
797  if (ns)
798  vec_sort_with_function (ns, ip6_neighbor_sort);
799  return ns;
800 }
801 
802 static clib_error_t *
803 show_ip6_neighbors (vlib_main_t * vm,
804  unformat_input_t * input, vlib_cli_command_t * cmd)
805 {
806  vnet_main_t *vnm = vnet_get_main ();
807  ip6_neighbor_t *n, *ns;
808  clib_error_t *error = 0;
809  u32 sw_if_index;
810 
811  /* Filter entries by interface if given. */
812  sw_if_index = ~0;
813  (void) unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index);
814 
815  ns = ip6_neighbors_entries (sw_if_index);
816  if (ns)
817  {
818  vlib_cli_output (vm, "%U", format_ip6_neighbor_ip6_entry, vm, 0);
819  vec_foreach (n, ns)
820  {
821  vlib_cli_output (vm, "%U", format_ip6_neighbor_ip6_entry, vm, n);
822  }
823  vec_free (ns);
824  }
825 
826  return error;
827 }
828 
829 /*?
830  * This command is used to display the adjacent IPv6 hosts found via
831  * neighbor discovery. Optionally, limit the output to the specified
832  * interface.
833  *
834  * @cliexpar
835  * Example of how to display the IPv6 neighbor adjacency table:
836  * @cliexstart{show ip6 neighbors}
837  * Time Address Flags Link layer Interface
838  * 34.0910 ::a:1:1:0:7 02:fe:6a:07:39:6f GigabitEthernet2/0/0
839  * 173.2916 ::b:5:1:c:2 02:fe:50:62:3a:94 GigabitEthernet2/0/0
840  * 886.6654 ::1:1:c:0:9 S 02:fe:e4:45:27:5b GigabitEthernet3/0/0
841  * @cliexend
842  * Example of how to display the IPv6 neighbor adjacency table for given interface:
843  * @cliexstart{show ip6 neighbors GigabitEthernet2/0/0}
844  * Time Address Flags Link layer Interface
845  * 34.0910 ::a:1:1:0:7 02:fe:6a:07:39:6f GigabitEthernet2/0/0
846  * 173.2916 ::b:5:1:c:2 02:fe:50:62:3a:94 GigabitEthernet2/0/0
847  * @cliexend
848 ?*/
849 /* *INDENT-OFF* */
850 VLIB_CLI_COMMAND (show_ip6_neighbors_command, static) = {
851  .path = "show ip6 neighbors",
852  .function = show_ip6_neighbors,
853  .short_help = "show ip6 neighbors [<interface>]",
854 };
855 /* *INDENT-ON* */
856 
857 static clib_error_t *
858 set_ip6_neighbor (vlib_main_t * vm,
859  unformat_input_t * input, vlib_cli_command_t * cmd)
860 {
861  vnet_main_t *vnm = vnet_get_main ();
862  ip6_address_t addr;
863  u8 mac_address[6];
864  int addr_valid = 0;
865  int is_del = 0;
866  int is_static = 0;
867  int is_no_fib_entry = 0;
868  u32 sw_if_index;
869 
870  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
871  {
872  /* intfc, ip6-address, mac-address */
873  if (unformat (input, "%U %U %U",
874  unformat_vnet_sw_interface, vnm, &sw_if_index,
875  unformat_ip6_address, &addr,
876  unformat_ethernet_address, mac_address))
877  addr_valid = 1;
878 
879  else if (unformat (input, "delete") || unformat (input, "del"))
880  is_del = 1;
881  else if (unformat (input, "static"))
882  is_static = 1;
883  else if (unformat (input, "no-fib-entry"))
884  is_no_fib_entry = 1;
885  else
886  break;
887  }
888 
889  if (!addr_valid)
890  return clib_error_return (0, "Missing interface, ip6 or hw address");
891 
892  if (!is_del)
893  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index, &addr,
894  mac_address, sizeof (mac_address),
895  is_static, is_no_fib_entry);
896  else
897  vnet_unset_ip6_ethernet_neighbor (vm, sw_if_index, &addr,
898  mac_address, sizeof (mac_address));
899  return 0;
900 }
901 
902 /*?
903  * This command is used to manually add an entry to the IPv6 neighbor
904  * adjacency table. Optionally, the entry can be added as static. It is
905  * also used to remove an entry from the table. Use the '<em>show ip6
906  * neighbors</em>' command to display all learned and manually entered entries.
907  *
908  * @cliexpar
909  * Example of how to add a static entry to the IPv6 neighbor adjacency table:
910  * @cliexcmd{set ip6 neighbor GigabitEthernet2/0/0 ::1:1:c:0:9 02:fe:e4:45:27:5b static}
911  * Example of how to delete an entry from the IPv6 neighbor adjacency table:
912  * @cliexcmd{set ip6 neighbor del GigabitEthernet2/0/0 ::1:1:c:0:9 02:fe:e4:45:27:5b}
913 ?*/
914 /* *INDENT-OFF* */
915 VLIB_CLI_COMMAND (set_ip6_neighbor_command, static) =
916 {
917  .path = "set ip6 neighbor",
918  .function = set_ip6_neighbor,
919  .short_help = "set ip6 neighbor [del] <interface> <ip6-address> <mac-address> [static]",
920 };
921 /* *INDENT-ON* */
922 
923 typedef enum
924 {
925  ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP,
926  ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY,
927  ICMP6_NEIGHBOR_SOLICITATION_N_NEXT,
928 } icmp6_neighbor_solicitation_or_advertisement_next_t;
929 
930 static_always_inline uword
931 icmp6_neighbor_solicitation_or_advertisement (vlib_main_t * vm,
932  vlib_node_runtime_t * node,
933  vlib_frame_t * frame,
934  uword is_solicitation)
935 {
936  vnet_main_t *vnm = vnet_get_main ();
937  ip6_main_t *im = &ip6_main;
938  uword n_packets = frame->n_vectors;
939  u32 *from, *to_next;
940  u32 n_left_from, n_left_to_next, next_index, n_advertisements_sent;
941  icmp6_neighbor_discovery_option_type_t option_type;
942  vlib_node_runtime_t *error_node =
943  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
944  int bogus_length;
945 
946  from = vlib_frame_vector_args (frame);
947  n_left_from = n_packets;
948  next_index = node->cached_next_index;
949 
950  if (node->flags & VLIB_NODE_FLAG_TRACE)
951  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
952  /* stride */ 1,
953  sizeof (icmp6_input_trace_t));
954 
955  option_type =
956  (is_solicitation
957  ? ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address
958  : ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address);
959  n_advertisements_sent = 0;
960 
961  while (n_left_from > 0)
962  {
963  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
964 
965  while (n_left_from > 0 && n_left_to_next > 0)
966  {
967  vlib_buffer_t *p0;
968  ip6_header_t *ip0;
969  icmp6_neighbor_solicitation_or_advertisement_header_t *h0;
970  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *o0;
971  u32 bi0, options_len0, sw_if_index0, next0, error0;
972  u32 ip6_sadd_link_local, ip6_sadd_unspecified;
973  int is_rewrite0;
974  u32 ni0;
975 
976  bi0 = to_next[0] = from[0];
977 
978  from += 1;
979  to_next += 1;
980  n_left_from -= 1;
981  n_left_to_next -= 1;
982 
983  p0 = vlib_get_buffer (vm, bi0);
984  ip0 = vlib_buffer_get_current (p0);
985  h0 = ip6_next_header (ip0);
986  options_len0 =
987  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
988 
989  error0 = ICMP6_ERROR_NONE;
990  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
991  ip6_sadd_link_local =
992  ip6_address_is_link_local_unicast (&ip0->src_address);
993  ip6_sadd_unspecified =
994  ip6_address_is_unspecified (&ip0->src_address);
995 
996  /* Check that source address is unspecified, link-local or else on-link. */
997  if (!ip6_sadd_unspecified && !ip6_sadd_link_local)
998  {
999  u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
1000 
1001  if (ADJ_INDEX_INVALID != src_adj_index0)
1002  {
1003  ip_adjacency_t *adj0 =
1004  ip_get_adjacency (&im->lookup_main, src_adj_index0);
1005 
1006  /* Allow all realistic-looking rewrite adjacencies to pass */
1007  ni0 = adj0->lookup_next_index;
1008  is_rewrite0 = (ni0 >= IP_LOOKUP_NEXT_ARP) &&
1009  (ni0 < IP6_LOOKUP_N_NEXT);
1010 
1011  error0 = ((adj0->rewrite_header.sw_if_index != sw_if_index0
1012  || !is_rewrite0)
1013  ?
1014  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_NOT_ON_LINK
1015  : error0);
1016  }
1017  else
1018  {
1019  error0 =
1020  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_NOT_ON_LINK;
1021  }
1022  }
1023 
1024  o0 = (void *) (h0 + 1);
1025  o0 = ((options_len0 == 8 && o0->header.type == option_type
1026  && o0->header.n_data_u64s == 1) ? o0 : 0);
1027 
1028  /* If src address unspecified or link local, donot learn neighbor MAC */
1029  if (PREDICT_TRUE (error0 == ICMP6_ERROR_NONE && o0 != 0 &&
1030  !ip6_sadd_unspecified && !ip6_sadd_link_local))
1031  {
1032  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1033  if (nm->limit_neighbor_cache_size &&
1034  pool_elts (nm->neighbor_pool) >=
1035  nm->limit_neighbor_cache_size)
1036  unset_random_neighbor_entry ();
1037  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index0,
1038  is_solicitation ?
1039  &ip0->src_address :
1040  &h0->target_address,
1041  o0->ethernet_address,
1042  sizeof (o0->ethernet_address),
1043  0, 0);
1044  }
1045 
1046  if (is_solicitation && error0 == ICMP6_ERROR_NONE)
1047  {
1048  /* Check that target address is local to this router. */
1049  fib_node_index_t fei;
1050  u32 fib_index;
1051 
1052  fib_index =
1053  ip6_fib_table_get_index_for_sw_if_index (sw_if_index0);
1054 
1055  if (~0 == fib_index)
1056  {
1057  error0 = ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1058  }
1059  else
1060  {
1061  fei = ip6_fib_table_lookup_exact_match (fib_index,
1062  &h0->target_address,
1063  128);
1064 
1065  if (FIB_NODE_INDEX_INVALID == fei)
1066  {
1067  /* The target address is not in the FIB */
1068  error0 =
1069  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1070  }
1071  else
1072  {
1073  if (FIB_ENTRY_FLAG_LOCAL &
1074  fib_entry_get_flags_for_source (fei,
1075  FIB_SOURCE_INTERFACE))
1076  {
1077  /* It's an address that belongs to one of our interfaces
1078  * that's good. */
1079  }
1080  else
1081  if (fib_entry_is_sourced
1082  (fei, FIB_SOURCE_IP6_ND_PROXY))
1083  {
1084  /* The address was added by IPv6 Proxy ND config.
1085  * We should only respond to these if the NS arrived on
1086  * the link that has a matching covering prefix */
1087  }
1088  else
1089  {
1090  error0 =
1091  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1092  }
1093  }
1094  }
1095  }
1096 
1097  if (is_solicitation)
1098  next0 = (error0 != ICMP6_ERROR_NONE
1099  ? ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP
1100  : ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY);
1101  else
1102  {
1103  next0 = 0;
1104  error0 = error0 == ICMP6_ERROR_NONE ?
1105  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_RX : error0;
1106  }
1107 
1108  if (is_solicitation && error0 == ICMP6_ERROR_NONE)
1109  {
1110  vnet_sw_interface_t *sw_if0;
1111  ethernet_interface_t *eth_if0;
1112  ethernet_header_t *eth0;
1113 
1114  /* dst address is either source address or the all-nodes mcast addr */
1115  if (!ip6_sadd_unspecified)
1116  ip0->dst_address = ip0->src_address;
1117  else
1118  ip6_set_reserved_multicast_address (&ip0->dst_address,
1119  IP6_MULTICAST_SCOPE_link_local,
1120  IP6_MULTICAST_GROUP_ID_all_hosts);
1121 
1122  ip0->src_address = h0->target_address;
1123  ip0->hop_limit = 255;
1124  h0->icmp.type = ICMP6_neighbor_advertisement;
1125 
1126  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1127  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1128  eth_if0 =
1129  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1130  if (eth_if0 && o0)
1131  {
1132  clib_memcpy (o0->ethernet_address, eth_if0->address, 6);
1133  o0->header.type =
1134  ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
1135  }
1136 
1137  h0->advertisement_flags = clib_host_to_net_u32
1138  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
1139  | ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
1140 
1141  h0->icmp.checksum = 0;
1142  h0->icmp.checksum =
1143  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0,
1144  &bogus_length);
1145  ASSERT (bogus_length == 0);
1146 
1147  /* Reuse current MAC header, copy SMAC to DMAC and
1148  * interface MAC to SMAC */
1149  vlib_buffer_advance (p0, -ethernet_buffer_header_size (p0));
1150  eth0 = vlib_buffer_get_current (p0);
1151  clib_memcpy (eth0->dst_address, eth0->src_address, 6);
1152  if (eth_if0)
1153  clib_memcpy (eth0->src_address, eth_if0->address, 6);
1154 
1155  /* Setup input and output sw_if_index for packet */
1156  ASSERT (vnet_buffer (p0)->sw_if_index[VLIB_RX] == sw_if_index0);
1157  vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0;
1158  vnet_buffer (p0)->sw_if_index[VLIB_RX] =
1159  vnet_main.local_interface_sw_if_index;
1160 
1161  n_advertisements_sent++;
1162  }
1163 
1164  p0->error = error_node->errors[error0];
1165 
1166  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1167  to_next, n_left_to_next,
1168  bi0, next0);
1169  }
1170 
1171  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1172  }
1173 
1174  /* Account for advertisements sent. */
1175  vlib_error_count (vm, error_node->node_index,
1176  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_TX,
1177  n_advertisements_sent);
1178 
1179  return frame->n_vectors;
1180 }
1181 
1182 /* for "syslogging" - use elog for now */
1183 #define foreach_log_level \
1184  _ (DEBUG, "DEBUG") \
1185  _ (INFO, "INFORMATION") \
1186  _ (NOTICE, "NOTICE") \
1187  _ (WARNING, "WARNING") \
1188  _ (ERR, "ERROR") \
1189  _ (CRIT, "CRITICAL") \
1190  _ (ALERT, "ALERT") \
1191  _ (EMERG, "EMERGENCY")
1192 
1193 typedef enum
1194 {
1195 #define _(f,s) LOG_##f,
1196  foreach_log_level
1197 #undef _
1198 } log_level_t;
1199 
1200 static char *log_level_strings[] = {
1201 #define _(f,s) s,
1202  foreach_log_level
1203 #undef _
1204 };
1205 
1206 static int logmask = 1 << LOG_DEBUG;
1207 
1208 static void
1209 ip6_neighbor_syslog (vlib_main_t * vm, int priority, char *fmt, ...)
1210 {
1211  /* just use elog for now */
1212  u8 *what;
1213  va_list va;
1214 
1215  if ((priority > LOG_EMERG) || !(logmask & (1 << priority)))
1216  return;
1217 
1218  va_start (va, fmt);
1219  if (fmt)
1220  {
1221  what = va_format (0, fmt, &va);
1222 
1223  ELOG_TYPE_DECLARE (e) =
1224  {
1225  .format = "ip6 nd: (%s): %s",.format_args = "T4T4",};
1226  struct
1227  {
1228  u32 s[2];
1229  } *ed;
1230  ed = ELOG_DATA (&vm->elog_main, e);
1231  ed->s[0] = elog_string (&vm->elog_main, log_level_strings[priority]);
1232  ed->s[1] = elog_string (&vm->elog_main, (char *) what);
1233  }
1234  va_end (va);
1235  return;
1236 }
1237 
1238 /* ipv6 neighbor discovery - router advertisements */
1239 typedef enum
1240 {
1241  ICMP6_ROUTER_SOLICITATION_NEXT_DROP,
1242  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW,
1243  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX,
1244  ICMP6_ROUTER_SOLICITATION_N_NEXT,
1245 } icmp6_router_solicitation_or_advertisement_next_t;
1246 
1247 static_always_inline uword
1248 icmp6_router_solicitation (vlib_main_t * vm,
1249  vlib_node_runtime_t * node, vlib_frame_t * frame)
1250 {
1251  vnet_main_t *vnm = vnet_get_main ();
1252  ip6_main_t *im = &ip6_main;
1253  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1254  uword n_packets = frame->n_vectors;
1255  u32 *from, *to_next;
1256  u32 n_left_from, n_left_to_next, next_index;
1257  u32 n_advertisements_sent = 0;
1258  int bogus_length;
1259 
1260  icmp6_neighbor_discovery_option_type_t option_type;
1261 
1262  vlib_node_runtime_t *error_node =
1263  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1264 
1265  from = vlib_frame_vector_args (frame);
1266  n_left_from = n_packets;
1267  next_index = node->cached_next_index;
1268 
1269  if (node->flags & VLIB_NODE_FLAG_TRACE)
1270  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1271  /* stride */ 1,
1272  sizeof (icmp6_input_trace_t));
1273 
1274  /* source may append his LL address */
1275  option_type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
1276 
1277  while (n_left_from > 0)
1278  {
1279  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1280 
1281  while (n_left_from > 0 && n_left_to_next > 0)
1282  {
1283  vlib_buffer_t *p0;
1284  ip6_header_t *ip0;
1285  ip6_radv_t *radv_info = 0;
1286 
1287  icmp6_neighbor_discovery_header_t *h0;
1288  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *o0;
1289 
1290  u32 bi0, options_len0, sw_if_index0, next0, error0;
1291  u32 is_solicitation = 1, is_dropped = 0;
1292  u32 is_unspecified, is_link_local;
1293 
1294  bi0 = to_next[0] = from[0];
1295 
1296  from += 1;
1297  to_next += 1;
1298  n_left_from -= 1;
1299  n_left_to_next -= 1;
1300 
1301  p0 = vlib_get_buffer (vm, bi0);
1302  ip0 = vlib_buffer_get_current (p0);
1303  h0 = ip6_next_header (ip0);
1304  options_len0 =
1305  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1306  is_unspecified = ip6_address_is_unspecified (&ip0->src_address);
1307  is_link_local =
1308  ip6_address_is_link_local_unicast (&ip0->src_address);
1309 
1310  error0 = ICMP6_ERROR_NONE;
1311  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1312 
1313  /* check if solicitation (not from nd_timer node) */
1314  if (ip6_address_is_unspecified (&ip0->dst_address))
1315  is_solicitation = 0;
1316 
1317  /* Check that source address is unspecified, link-local or else on-link. */
1318  if (!is_unspecified && !is_link_local)
1319  {
1320  u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
1321 
1322  if (ADJ_INDEX_INVALID != src_adj_index0)
1323  {
1324  ip_adjacency_t *adj0 = ip_get_adjacency (&im->lookup_main,
1325  src_adj_index0);
1326 
1327  error0 = (adj0->rewrite_header.sw_if_index != sw_if_index0
1328  ?
1329  ICMP6_ERROR_ROUTER_SOLICITATION_SOURCE_NOT_ON_LINK
1330  : error0);
1331  }
1332  else
1333  {
1334  error0 = ICMP6_ERROR_ROUTER_SOLICITATION_SOURCE_NOT_ON_LINK;
1335  }
1336  }
1337 
1338  /* check for source LL option and process */
1339  o0 = (void *) (h0 + 1);
1340  o0 = ((options_len0 == 8
1341  && o0->header.type == option_type
1342  && o0->header.n_data_u64s == 1) ? o0 : 0);
1343 
1344  /* if src address unspecified IGNORE any options */
1345  if (PREDICT_TRUE (error0 == ICMP6_ERROR_NONE && o0 != 0 &&
1346  !is_unspecified && !is_link_local))
1347  {
1348  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1349  if (nm->limit_neighbor_cache_size &&
1350  pool_elts (nm->neighbor_pool) >=
1351  nm->limit_neighbor_cache_size)
1352  unset_random_neighbor_entry ();
1353 
1354  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index0,
1355  &ip0->src_address,
1356  o0->ethernet_address,
1357  sizeof (o0->ethernet_address),
1358  0, 0);
1359  }
1360 
1361  /* default is to drop */
1362  next0 = ICMP6_ROUTER_SOLICITATION_NEXT_DROP;
1363 
1364  if (error0 == ICMP6_ERROR_NONE)
1365  {
1366  vnet_sw_interface_t *sw_if0;
1367  ethernet_interface_t *eth_if0;
1368  u32 adj_index0;
1369 
1370  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1371  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1372  eth_if0 =
1373  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1374 
1375  /* only support ethernet interface type for now */
1376  error0 =
1377  (!eth_if0) ? ICMP6_ERROR_ROUTER_SOLICITATION_UNSUPPORTED_INTF
1378  : error0;
1379 
1380  if (error0 == ICMP6_ERROR_NONE)
1381  {
1382  u32 ri;
1383 
1384  /* adjust the sizeof the buffer to just include the ipv6 header */
1385  p0->current_length -=
1386  (options_len0 +
1387  sizeof (icmp6_neighbor_discovery_header_t));
1388 
1389  /* look up the radv_t information for this interface */
1390  vec_validate_init_empty
1391  (nm->if_radv_pool_index_by_sw_if_index, sw_if_index0, ~0);
1392 
1393  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
1394 
1395  if (ri != ~0)
1396  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
1397 
1398  error0 =
1399  ((!radv_info) ?
1400  ICMP6_ERROR_ROUTER_SOLICITATION_RADV_NOT_CONFIG :
1401  error0);
1402 
1403  if (error0 == ICMP6_ERROR_NONE)
1404  {
1405  f64 now = vlib_time_now (vm);
1406 
1407  /* for solicited adverts - need to rate limit */
1408  if (is_solicitation)
1409  {
1410  if (0 != radv_info->last_radv_time &&
1411  (now - radv_info->last_radv_time) <
1412  MIN_DELAY_BETWEEN_RAS)
1413  is_dropped = 1;
1414  else
1415  radv_info->last_radv_time = now;
1416  }
1417 
1418  /* send now */
1419  icmp6_router_advertisement_header_t rh;
1420 
1421  rh.icmp.type = ICMP6_router_advertisement;
1422  rh.icmp.code = 0;
1423  rh.icmp.checksum = 0;
1424 
1425  rh.current_hop_limit = radv_info->curr_hop_limit;
1426  rh.router_lifetime_in_sec =
1427  clib_host_to_net_u16
1428  (radv_info->adv_router_lifetime_in_sec);
1429  rh.
1430  time_in_msec_between_retransmitted_neighbor_solicitations
1431  =
1432  clib_host_to_net_u32 (radv_info->
1433  adv_time_in_msec_between_retransmitted_neighbor_solicitations);
1434  rh.neighbor_reachable_time_in_msec =
1435  clib_host_to_net_u32 (radv_info->
1436  adv_neighbor_reachable_time_in_msec);
1437 
1438  rh.flags =
1439  (radv_info->adv_managed_flag) ?
1440  ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP :
1441  0;
1442  rh.flags |=
1443  ((radv_info->adv_other_flag) ?
1444  ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP :
1445  0);
1446 
1447 
1448  u16 payload_length =
1449  sizeof (icmp6_router_advertisement_header_t);
1450 
1451  vlib_buffer_add_data (vm,
1452  p0->free_list_index,
1453  bi0,
1454  (void *) &rh,
1455  sizeof
1456  (icmp6_router_advertisement_header_t));
1457 
1458  if (radv_info->adv_link_layer_address)
1459  {
1460  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
1461  h;
1462 
1463  h.header.type =
1464  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
1465  h.header.n_data_u64s = 1;
1466 
1467  /* copy ll address */
1468  clib_memcpy (&h.ethernet_address[0],
1469  eth_if0->address, 6);
1470 
1471  vlib_buffer_add_data (vm,
1472  p0->free_list_index,
1473  bi0,
1474  (void *) &h,
1475  sizeof
1476  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t));
1477 
1478  payload_length +=
1479  sizeof
1480  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t);
1481  }
1482 
1483  /* add MTU option */
1484  if (radv_info->adv_link_mtu)
1485  {
1486  icmp6_neighbor_discovery_mtu_option_t h;
1487 
1488  h.unused = 0;
1489  h.mtu =
1490  clib_host_to_net_u32 (radv_info->adv_link_mtu);
1491  h.header.type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_mtu;
1492  h.header.n_data_u64s = 1;
1493 
1494  payload_length +=
1495  sizeof (icmp6_neighbor_discovery_mtu_option_t);
1496 
1497  vlib_buffer_add_data (vm,
1498  p0->free_list_index,
1499  bi0,
1500  (void *) &h,
1501  sizeof
1502  (icmp6_neighbor_discovery_mtu_option_t));
1503  }
1504 
1505  /* add advertised prefix options */
1506  ip6_radv_prefix_t *pr_info;
1507 
1508  /* *INDENT-OFF* */
1509  pool_foreach (pr_info, radv_info->adv_prefixes_pool,
1510  ({
1511  if(pr_info->enabled &&
1512  (!pr_info->decrement_lifetime_flag
1513  || (pr_info->pref_lifetime_expires >0)))
1514  {
1515  /* advertise this prefix */
1516  icmp6_neighbor_discovery_prefix_information_option_t h;
1517 
1518  h.header.type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_prefix_information;
1519  h.header.n_data_u64s = (sizeof(icmp6_neighbor_discovery_prefix_information_option_t) >> 3);
1520 
1521  h.dst_address_length = pr_info->prefix_len;
1522 
1523  h.flags = (pr_info->adv_on_link_flag) ? ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_FLAG_ON_LINK : 0;
1524  h.flags |= (pr_info->adv_autonomous_flag) ? ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_AUTO : 0;
1525 
1526  if(radv_info->cease_radv && pr_info->deprecated_prefix_flag)
1527  {
1528  h.valid_time = clib_host_to_net_u32(MIN_ADV_VALID_LIFETIME);
1529  h.preferred_time = 0;
1530  }
1531  else
1532  {
1533  if(pr_info->decrement_lifetime_flag)
1534  {
1535  pr_info->adv_valid_lifetime_in_secs = ((pr_info->valid_lifetime_expires > now)) ?
1536  (pr_info->valid_lifetime_expires - now) : 0;
1537 
1538  pr_info->adv_pref_lifetime_in_secs = ((pr_info->pref_lifetime_expires > now)) ?
1539  (pr_info->pref_lifetime_expires - now) : 0;
1540  }
1541 
1542  h.valid_time = clib_host_to_net_u32(pr_info->adv_valid_lifetime_in_secs);
1543  h.preferred_time = clib_host_to_net_u32(pr_info->adv_pref_lifetime_in_secs) ;
1544  }
1545  h.unused = 0;
1546 
1547  clib_memcpy(&h.dst_address, &pr_info->prefix, sizeof(ip6_address_t));
1548 
1549  payload_length += sizeof( icmp6_neighbor_discovery_prefix_information_option_t);
1550 
1551  vlib_buffer_add_data (vm,
1552  p0->free_list_index,
1553  bi0,
1554  (void *)&h, sizeof(icmp6_neighbor_discovery_prefix_information_option_t));
1555 
1556  }
1557  }));
1558  /* *INDENT-ON* */
1559 
1560  /* add additional options before here */
1561 
1562  /* finish building the router advertisement... */
1563  if (!is_unspecified && radv_info->send_unicast)
1564  {
1565  ip0->dst_address = ip0->src_address;
1566  }
1567  else
1568  {
1569  /* target address is all-nodes mcast addr */
1570  ip6_set_reserved_multicast_address
1571  (&ip0->dst_address,
1572  IP6_MULTICAST_SCOPE_link_local,
1573  IP6_MULTICAST_GROUP_ID_all_hosts);
1574  }
1575 
1576  /* source address MUST be the link-local address */
1577  ip0->src_address = radv_info->link_local_address;
1578 
1579  ip0->hop_limit = 255;
1580  ip0->payload_length =
1581  clib_host_to_net_u16 (payload_length);
1582 
1583  icmp6_router_advertisement_header_t *rh0 =
1584  (icmp6_router_advertisement_header_t *) (ip0 + 1);
1585  rh0->icmp.checksum =
1586  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0,
1587  &bogus_length);
1588  ASSERT (bogus_length == 0);
1589 
1590  /* setup output if and adjacency */
1591  vnet_buffer (p0)->sw_if_index[VLIB_RX] =
1592  vnet_main.local_interface_sw_if_index;
1593 
1594  if (is_solicitation)
1595  {
1596  ethernet_header_t *eth0;
1597  /* Reuse current MAC header, copy SMAC to DMAC and
1598  * interface MAC to SMAC */
1599  vlib_buffer_reset (p0);
1600  eth0 = vlib_buffer_get_current (p0);
1601  clib_memcpy (eth0->dst_address, eth0->src_address,
1602  6);
1603  clib_memcpy (eth0->src_address, eth_if0->address,
1604  6);
1605  next0 =
1606  is_dropped ? next0 :
1607  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX;
1608  vnet_buffer (p0)->sw_if_index[VLIB_TX] =
1609  sw_if_index0;
1610  }
1611  else
1612  {
1613  adj_index0 = radv_info->mcast_adj_index;
1614  if (adj_index0 == 0)
1615  error0 = ICMP6_ERROR_DST_LOOKUP_MISS;
1616  else
1617  {
1618  next0 =
1619  is_dropped ? next0 :
1620  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW;
1621  vnet_buffer (p0)->ip.adj_index[VLIB_TX] =
1622  adj_index0;
1623  }
1624  }
1625  p0->flags |= VNET_BUFFER_LOCALLY_ORIGINATED;
1626 
1627  radv_info->n_solicitations_dropped += is_dropped;
1628  radv_info->n_solicitations_rcvd += is_solicitation;
1629 
1630  if ((error0 == ICMP6_ERROR_NONE) && !is_dropped)
1631  {
1632  radv_info->n_advertisements_sent++;
1633  n_advertisements_sent++;
1634  }
1635  }
1636  }
1637  }
1638 
1639  p0->error = error_node->errors[error0];
1640 
1641  if (error0 != ICMP6_ERROR_NONE)
1642  vlib_error_count (vm, error_node->node_index, error0, 1);
1643 
1644  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1645  to_next, n_left_to_next,
1646  bi0, next0);
1647 
1648  }
1649 
1650  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1651  }
1652 
1653  /* Account for router advertisements sent. */
1654  vlib_error_count (vm, error_node->node_index,
1655  ICMP6_ERROR_ROUTER_ADVERTISEMENTS_TX,
1656  n_advertisements_sent);
1657 
1658  return frame->n_vectors;
1659 }
1660 
1661  /* validate advertised info for consistancy (see RFC-4861 section 6.2.7) - log any inconsistencies, packet will always be dropped */
1662 static_always_inline uword
1663 icmp6_router_advertisement (vlib_main_t * vm,
1664  vlib_node_runtime_t * node, vlib_frame_t * frame)
1665 {
1666  vnet_main_t *vnm = vnet_get_main ();
1667  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1668  uword n_packets = frame->n_vectors;
1669  u32 *from, *to_next;
1670  u32 n_left_from, n_left_to_next, next_index;
1671  u32 n_advertisements_rcvd = 0;
1672 
1673  vlib_node_runtime_t *error_node =
1674  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1675 
1676  from = vlib_frame_vector_args (frame);
1677  n_left_from = n_packets;
1678  next_index = node->cached_next_index;
1679 
1680  if (node->flags & VLIB_NODE_FLAG_TRACE)
1681  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1682  /* stride */ 1,
1683  sizeof (icmp6_input_trace_t));
1684 
1685  while (n_left_from > 0)
1686  {
1687  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1688 
1689  while (n_left_from > 0 && n_left_to_next > 0)
1690  {
1691  vlib_buffer_t *p0;
1692  ip6_header_t *ip0;
1693  ip6_radv_t *radv_info = 0;
1694  icmp6_router_advertisement_header_t *h0;
1695  u32 bi0, options_len0, sw_if_index0, next0, error0;
1696 
1697  bi0 = to_next[0] = from[0];
1698 
1699  from += 1;
1700  to_next += 1;
1701  n_left_from -= 1;
1702  n_left_to_next -= 1;
1703 
1704  p0 = vlib_get_buffer (vm, bi0);
1705  ip0 = vlib_buffer_get_current (p0);
1706  h0 = ip6_next_header (ip0);
1707  options_len0 =
1708  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1709 
1710  error0 = ICMP6_ERROR_NONE;
1711  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1712 
1713  /* Check that source address is link-local */
1714  error0 = (!ip6_address_is_link_local_unicast (&ip0->src_address)) ?
1715  ICMP6_ERROR_ROUTER_ADVERTISEMENT_SOURCE_NOT_LINK_LOCAL : error0;
1716 
1717  /* default is to drop */
1718  next0 = ICMP6_ROUTER_SOLICITATION_NEXT_DROP;
1719 
1720  n_advertisements_rcvd++;
1721 
1722  if (error0 == ICMP6_ERROR_NONE)
1723  {
1724  vnet_sw_interface_t *sw_if0;
1725  ethernet_interface_t *eth_if0;
1726 
1727  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1728  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1729  eth_if0 =
1730  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1731 
1732  /* only support ethernet interface type for now */
1733  error0 =
1734  (!eth_if0) ? ICMP6_ERROR_ROUTER_SOLICITATION_UNSUPPORTED_INTF
1735  : error0;
1736 
1737  if (error0 == ICMP6_ERROR_NONE)
1738  {
1739  u32 ri;
1740 
1741  /* look up the radv_t information for this interface */
1742  vec_validate_init_empty
1743  (nm->if_radv_pool_index_by_sw_if_index, sw_if_index0, ~0);
1744 
1745  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
1746 
1747  if (ri != ~0)
1748  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
1749 
1750  error0 =
1751  ((!radv_info) ?
1752  ICMP6_ERROR_ROUTER_SOLICITATION_RADV_NOT_CONFIG :
1753  error0);
1754 
1755  if (error0 == ICMP6_ERROR_NONE)
1756  {
1757  /* validate advertised information */
1758  if ((h0->current_hop_limit && radv_info->curr_hop_limit)
1759  && (h0->current_hop_limit !=
1760  radv_info->curr_hop_limit))
1761  {
1762  ip6_neighbor_syslog (vm, LOG_WARNING,
1763  "our AdvCurHopLimit on %U doesn't agree with %U",
1764  format_vnet_sw_if_index_name,
1765  vnm, sw_if_index0,
1766  format_ip6_address,
1767  &ip0->src_address);
1768  }
1769 
1770  if ((h0->flags &
1771  ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP)
1772  != radv_info->adv_managed_flag)
1773  {
1774  ip6_neighbor_syslog (vm, LOG_WARNING,
1775  "our AdvManagedFlag on %U doesn't agree with %U",
1776  format_vnet_sw_if_index_name,
1777  vnm, sw_if_index0,
1778  format_ip6_address,
1779  &ip0->src_address);
1780  }
1781 
1782  if ((h0->flags &
1783  ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP)
1784  != radv_info->adv_other_flag)
1785  {
1786  ip6_neighbor_syslog (vm, LOG_WARNING,
1787  "our AdvOtherConfigFlag on %U doesn't agree with %U",
1788  format_vnet_sw_if_index_name,
1789  vnm, sw_if_index0,
1790  format_ip6_address,
1791  &ip0->src_address);
1792  }
1793 
1794  if ((h0->
1795  time_in_msec_between_retransmitted_neighbor_solicitations
1796  && radv_info->
1797  adv_time_in_msec_between_retransmitted_neighbor_solicitations)
1798  && (h0->
1799  time_in_msec_between_retransmitted_neighbor_solicitations
1800  !=
1801  clib_host_to_net_u32 (radv_info->
1802  adv_time_in_msec_between_retransmitted_neighbor_solicitations)))
1803  {
1804  ip6_neighbor_syslog (vm, LOG_WARNING,
1805  "our AdvRetransTimer on %U doesn't agree with %U",
1806  format_vnet_sw_if_index_name,
1807  vnm, sw_if_index0,
1808  format_ip6_address,
1809  &ip0->src_address);
1810  }
1811 
1812  if ((h0->neighbor_reachable_time_in_msec &&
1813  radv_info->adv_neighbor_reachable_time_in_msec) &&
1814  (h0->neighbor_reachable_time_in_msec !=
1815  clib_host_to_net_u32
1816  (radv_info->adv_neighbor_reachable_time_in_msec)))
1817  {
1818  ip6_neighbor_syslog (vm, LOG_WARNING,
1819  "our AdvReachableTime on %U doesn't agree with %U",
1820  format_vnet_sw_if_index_name,
1821  vnm, sw_if_index0,
1822  format_ip6_address,
1823  &ip0->src_address);
1824  }
1825 
1826  /* check for MTU or prefix options or .. */
1827  u8 *opt_hdr = (u8 *) (h0 + 1);
1828  while (options_len0 > 0)
1829  {
1830  icmp6_neighbor_discovery_option_header_t *o0 =
1831  (icmp6_neighbor_discovery_option_header_t *)
1832  opt_hdr;
1833  int opt_len = o0->n_data_u64s << 3;
1834  icmp6_neighbor_discovery_option_type_t option_type =
1835  o0->type;
1836 
1837  if (options_len0 < 2)
1838  {
1839  ip6_neighbor_syslog (vm, LOG_ERR,
1840  "malformed RA packet on %U from %U",
1841  format_vnet_sw_if_index_name,
1842  vnm, sw_if_index0,
1843  format_ip6_address,
1844  &ip0->src_address);
1845  break;
1846  }
1847 
1848  if (opt_len == 0)
1849  {
1850  ip6_neighbor_syslog (vm, LOG_ERR,
1851  " zero length option in RA on %U from %U",
1852  format_vnet_sw_if_index_name,
1853  vnm, sw_if_index0,
1854  format_ip6_address,
1855  &ip0->src_address);
1856  break;
1857  }
1858  else if (opt_len > options_len0)
1859  {
1860  ip6_neighbor_syslog (vm, LOG_ERR,
1861  "option length in RA packet greater than total length on %U from %U",
1862  format_vnet_sw_if_index_name,
1863  vnm, sw_if_index0,
1864  format_ip6_address,
1865  &ip0->src_address);
1866  break;
1867  }
1868 
1869  options_len0 -= opt_len;
1870  opt_hdr += opt_len;
1871 
1872  switch (option_type)
1873  {
1874  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_mtu:
1875  {
1876  icmp6_neighbor_discovery_mtu_option_t *h =
1877  (icmp6_neighbor_discovery_mtu_option_t
1878  *) (o0);
1879 
1880  if (opt_len < sizeof (*h))
1881  break;
1882 
1883  if ((h->mtu && radv_info->adv_link_mtu) &&
1884  (h->mtu !=
1885  clib_host_to_net_u32
1886  (radv_info->adv_link_mtu)))
1887  {
1888  ip6_neighbor_syslog (vm, LOG_WARNING,
1889  "our AdvLinkMTU on %U doesn't agree with %U",
1890  format_vnet_sw_if_index_name,
1891  vnm, sw_if_index0,
1892  format_ip6_address,
1893  &ip0->src_address);
1894  }
1895  }
1896  break;
1897 
1898  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_prefix_information:
1899  {
1900  icmp6_neighbor_discovery_prefix_information_option_t
1901  * h =
1902  (icmp6_neighbor_discovery_prefix_information_option_t
1903  *) (o0);
1904 
1905  /* validate advertised prefix options */
1906  ip6_radv_prefix_t *pr_info;
1907  u32 preferred, valid;
1908 
1909  if (opt_len < sizeof (*h))
1910  break;
1911 
1912  preferred =
1913  clib_net_to_host_u32 (h->preferred_time);
1914  valid = clib_net_to_host_u32 (h->valid_time);
1915 
1916  /* look for matching prefix - if we our advertising it, it better be consistant */
1917  /* *INDENT-OFF* */
1918  pool_foreach (pr_info, radv_info->adv_prefixes_pool,
1919  ({
1920 
1921  ip6_address_t mask;
1922  ip6_address_mask_from_width(&mask, pr_info->prefix_len);
1923 
1924  if(pr_info->enabled &&
1925  (pr_info->prefix_len == h->dst_address_length) &&
1926  ip6_address_is_equal_masked (&pr_info->prefix, &h->dst_address, &mask))
1927  {
1928  /* found it */
1929  if(!pr_info->decrement_lifetime_flag &&
1930  valid != pr_info->adv_valid_lifetime_in_secs)
1931  {
1932  ip6_neighbor_syslog(vm, LOG_WARNING,
1933  "our ADV validlifetime on %U for %U does not agree with %U",
1934  format_vnet_sw_if_index_name, vnm, sw_if_index0,format_ip6_address, &pr_info->prefix,
1935  format_ip6_address, &h->dst_address);
1936  }
1937  if(!pr_info->decrement_lifetime_flag &&
1938  preferred != pr_info->adv_pref_lifetime_in_secs)
1939  {
1940  ip6_neighbor_syslog(vm, LOG_WARNING,
1941  "our ADV preferredlifetime on %U for %U does not agree with %U",
1942  format_vnet_sw_if_index_name, vnm, sw_if_index0,format_ip6_address, &pr_info->prefix,
1943  format_ip6_address, &h->dst_address);
1944  }
1945  }
1946  break;
1947  }));
1948  /* *INDENT-ON* */
1949  break;
1950  }
1951  default:
1952  /* skip this one */
1953  break;
1954  }
1955  }
1956  }
1957  }
1958  }
1959 
1960  p0->error = error_node->errors[error0];
1961 
1962  if (error0 != ICMP6_ERROR_NONE)
1963  vlib_error_count (vm, error_node->node_index, error0, 1);
1964 
1965  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1966  to_next, n_left_to_next,
1967  bi0, next0);
1968  }
1969 
1970  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1971  }
1972 
1973  /* Account for router advertisements sent. */
1974  vlib_error_count (vm, error_node->node_index,
1975  ICMP6_ERROR_ROUTER_ADVERTISEMENTS_RX,
1976  n_advertisements_rcvd);
1977 
1978  return frame->n_vectors;
1979 }
1980 
1981 /**
1982  * @brief Add a multicast Address to the advertised MLD set
1983  */
1984 static void
1985 ip6_neighbor_add_mld_prefix (ip6_radv_t * radv_info, ip6_address_t * addr)
1986 {
1987  ip6_mldp_group_t *mcast_group_info;
1988  uword *p;
1989 
1990  /* lookup mldp info for this interface */
1991  p = mhash_get (&radv_info->address_to_mldp_index, &addr);
1992  mcast_group_info =
1993  p ? pool_elt_at_index (radv_info->mldp_group_pool, p[0]) : 0;
1994 
1995  /* add address */
1996  if (!mcast_group_info)
1997  {
1998  /* add */
1999  u32 mi;
2000  pool_get (radv_info->mldp_group_pool, mcast_group_info);
2001 
2002  mi = mcast_group_info - radv_info->mldp_group_pool;
2003  mhash_set (&radv_info->address_to_mldp_index, &addr, mi, /* old_value */
2004  0);
2005 
2006  mcast_group_info->type = 4;
2007  mcast_group_info->mcast_source_address_pool = 0;
2008  mcast_group_info->num_sources = 0;
2009  clib_memcpy (&mcast_group_info->mcast_address, &addr,
2010  sizeof (ip6_address_t));
2011  }
2012 }
2013 
2014 /**
2015  * @brief Delete a multicast Address from the advertised MLD set
2016  */
2017 static void
2018 ip6_neighbor_del_mld_prefix (ip6_radv_t * radv_info, ip6_address_t * addr)
2019 {
2020  ip6_mldp_group_t *mcast_group_info;
2021  uword *p;
2022 
2023  p = mhash_get (&radv_info->address_to_mldp_index, &addr);
2024  mcast_group_info =
2025  p ? pool_elt_at_index (radv_info->mldp_group_pool, p[0]) : 0;
2026 
2027  if (mcast_group_info)
2028  {
2029  mhash_unset (&radv_info->address_to_mldp_index, &addr,
2030  /* old_value */ 0);
2031  pool_put (radv_info->mldp_group_pool, mcast_group_info);
2032  }
2033 }
2034 
2035 /**
2036  * @brief Add a multicast Address to the advertised MLD set
2037  */
2038 static void
2039 ip6_neighbor_add_mld_grp (ip6_radv_t * a,
2040  ip6_multicast_address_scope_t scope,
2041  ip6_multicast_link_local_group_id_t group)
2042 {
2043  ip6_address_t addr;
2044 
2045  ip6_set_reserved_multicast_address (&addr, scope, group);
2046 
2047  ip6_neighbor_add_mld_prefix (a, &addr);
2048 }
2049 
2050 /**
2051  * @brief create and initialize router advertisement parameters with default
2052  * values for this intfc
2053  */
2054 static u32
2055 ip6_neighbor_sw_interface_add_del (vnet_main_t * vnm,
2056  u32 sw_if_index, u32 is_add)
2057 {
2058  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2059  ip6_radv_t *a = 0;
2060  u32 ri = ~0;
2061  vnet_sw_interface_t *sw_if0;
2062  ethernet_interface_t *eth_if0 = 0;
2063 
2064  /* lookup radv container - ethernet interfaces only */
2065  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
2066  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
2067  eth_if0 = ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
2068 
2069  if (!eth_if0)
2070  return ri;
2071 
2072  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2073  ~0);
2074  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2075 
2076  if (ri != ~0)
2077  {
2078  a = pool_elt_at_index (nm->if_radv_pool, ri);
2079 
2080  if (!is_add)
2081  {
2082  ip6_radv_prefix_t *p;
2083  ip6_mldp_group_t *m;
2084 
2085  /* release the lock on the interface's mcast adj */
2086  adj_unlock (a->mcast_adj_index);
2087 
2088  /* clean up prefix and MDP pools */
2089  /* *INDENT-OFF* */
2090  pool_flush(p, a->adv_prefixes_pool,
2091  ({
2092  mhash_unset (&a->address_to_prefix_index, &p->prefix, 0);
2093  }));
2094  pool_flush (m, a->mldp_group_pool,
2095  ({
2096  mhash_unset (&a->address_to_mldp_index, &m->mcast_address, 0);
2097  }));
2098  /* *INDENT-ON* */
2099 
2100  pool_free (a->mldp_group_pool);
2101  pool_free (a->adv_prefixes_pool);
2102 
2103  mhash_free (&a->address_to_prefix_index);
2104  mhash_free (&a->address_to_mldp_index);
2105 
2106  pool_put (nm->if_radv_pool, a);
2107  nm->if_radv_pool_index_by_sw_if_index[sw_if_index] = ~0;
2108  ri = ~0;
2109  }
2110  }
2111  else
2112  {
2113  if (is_add)
2114  {
2115  vnet_hw_interface_t *hw_if0;
2116 
2117  hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index);
2118 
2119  pool_get (nm->if_radv_pool, a);
2120 
2121  ri = a - nm->if_radv_pool;
2122  nm->if_radv_pool_index_by_sw_if_index[sw_if_index] = ri;
2123 
2124  /* initialize default values (most of which are zero) */
2125  memset (a, 0, sizeof (a[0]));
2126 
2127  a->sw_if_index = sw_if_index;
2128  a->max_radv_interval = DEF_MAX_RADV_INTERVAL;
2129  a->min_radv_interval = DEF_MIN_RADV_INTERVAL;
2130  a->curr_hop_limit = DEF_CURR_HOP_LIMIT;
2131  a->adv_router_lifetime_in_sec = DEF_DEF_RTR_LIFETIME;
2132 
2133  /* send ll address source address option */
2134  a->adv_link_layer_address = 1;
2135 
2136  a->min_delay_between_radv = MIN_DELAY_BETWEEN_RAS;
2137  a->max_delay_between_radv = MAX_DELAY_BETWEEN_RAS;
2138  a->max_rtr_default_lifetime = MAX_DEF_RTR_LIFETIME;
2139  a->seed = (u32) clib_cpu_time_now ();
2140  (void) random_u32 (&a->seed);
2141  a->randomizer = clib_cpu_time_now ();
2142  (void) random_u64 (&a->randomizer);
2143 
2144  a->initial_adverts_count = MAX_INITIAL_RTR_ADVERTISEMENTS;
2145  a->initial_adverts_sent = a->initial_adverts_count - 1;
2146  a->initial_adverts_interval = MAX_INITIAL_RTR_ADVERT_INTERVAL;
2147 
2148  /* deafult is to send */
2149  a->send_radv = 1;
2150 
2151  /* fill in radv_info for this interface that will be needed later */
2152  a->adv_link_mtu = hw_if0->max_l3_packet_bytes[VLIB_RX];
2153 
2154  clib_memcpy (a->link_layer_address, eth_if0->address, 6);
2155 
2156  /* fill in default link-local address (this may be overridden) */
2157  ip6_link_local_address_from_ethernet_address
2158  (&a->link_local_address, eth_if0->address);
2159 
2160  mhash_init (&a->address_to_prefix_index, sizeof (uword),
2161  sizeof (ip6_address_t));
2162  mhash_init (&a->address_to_mldp_index, sizeof (uword),
2163  sizeof (ip6_address_t));
2164 
2165  a->mcast_adj_index = adj_mcast_add_or_lock (FIB_PROTOCOL_IP6,
2166  VNET_LINK_IP6,
2167  sw_if_index);
2168 
2169  /* add multicast groups we will always be reporting */
2170  ip6_neighbor_add_mld_grp (a,
2171  IP6_MULTICAST_SCOPE_link_local,
2172  IP6_MULTICAST_GROUP_ID_all_hosts);
2173  ip6_neighbor_add_mld_grp (a,
2174  IP6_MULTICAST_SCOPE_link_local,
2175  IP6_MULTICAST_GROUP_ID_all_routers);
2176  ip6_neighbor_add_mld_grp (a,
2177  IP6_MULTICAST_SCOPE_link_local,
2178  IP6_MULTICAST_GROUP_ID_mldv2_routers);
2179  }
2180  }
2181  return ri;
2182 }
2183 
2184 /* send an mldpv2 report */
2185 static void
2186 ip6_neighbor_send_mldpv2_report (u32 sw_if_index)
2187 {
2188  vnet_main_t *vnm = vnet_get_main ();
2189  vlib_main_t *vm = vnm->vlib_main;
2190  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2191  vnet_sw_interface_t *sw_if0;
2192  ethernet_interface_t *eth_if0;
2193  u32 ri;
2194  int bogus_length;
2195 
2196  ip6_radv_t *radv_info;
2197  u16 payload_length;
2198  vlib_buffer_t *b0;
2199  ip6_header_t *ip0;
2200  u32 *to_next;
2201  vlib_frame_t *f;
2202  u32 bo0;
2203  u32 n_to_alloc = 1;
2204  u32 n_allocated;
2205 
2206  icmp6_multicast_listener_report_header_t *rh0;
2207  icmp6_multicast_listener_report_packet_t *rp0;
2208 
2209  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
2210  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
2211  eth_if0 = ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
2212 
2213  if (!eth_if0 || !vnet_sw_interface_is_admin_up (vnm, sw_if_index))
2214  return;
2215 
2216  /* look up the radv_t information for this interface */
2217  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2218  ~0);
2219 
2220  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2221 
2222  if (ri == ~0)
2223  return;
2224 
2225  /* send report now - build a mldpv2 report packet */
2226  n_allocated = vlib_buffer_alloc_from_free_list (vm,
2227  &bo0,
2228  n_to_alloc,
2229  VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
2230  if (PREDICT_FALSE (n_allocated == 0))
2231  {
2232  clib_warning ("buffer allocation failure");
2233  return;
2234  }
2235 
2236  b0 = vlib_get_buffer (vm, bo0);
2237 
2238  /* adjust the sizeof the buffer to just include the ipv6 header */
2239  b0->current_length = sizeof (icmp6_multicast_listener_report_packet_t);
2240 
2241  payload_length = sizeof (icmp6_multicast_listener_report_header_t);
2242 
2243  b0->error = ICMP6_ERROR_NONE;
2244 
2245  rp0 = vlib_buffer_get_current (b0);
2246  ip0 = (ip6_header_t *) & rp0->ip;
2247  rh0 = (icmp6_multicast_listener_report_header_t *) & rp0->report_hdr;
2248 
2249  memset (rp0, 0x0, sizeof (icmp6_multicast_listener_report_packet_t));
2250 
2251  ip0->ip_version_traffic_class_and_flow_label =
2252  clib_host_to_net_u32 (0x6 << 28);
2253 
2254  ip0->protocol = IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS;
2255  /* for DEBUG - vnet driver won't seem to emit router alerts */
2256  /* ip0->protocol = IP_PROTOCOL_ICMP6; */
2257  ip0->hop_limit = 1;
2258 
2259  rh0->icmp.type = ICMP6_multicast_listener_report_v2;
2260 
2261  /* source address MUST be the link-local address */
2262  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
2263  ip0->src_address = radv_info->link_local_address;
2264 
2265  /* destination is all mldpv2 routers */
2266  ip6_set_reserved_multicast_address (&ip0->dst_address,
2267  IP6_MULTICAST_SCOPE_link_local,
2268  IP6_MULTICAST_GROUP_ID_mldv2_routers);
2269 
2270  /* add reports here */
2271  ip6_mldp_group_t *m;
2272  int num_addr_records = 0;
2273  icmp6_multicast_address_record_t rr;
2274 
2275  /* fill in the hop-by-hop extension header (router alert) info */
2276  rh0->ext_hdr.next_hdr = IP_PROTOCOL_ICMP6;
2277  rh0->ext_hdr.n_data_u64s = 0;
2278 
2279  rh0->alert.type = IP6_MLDP_ALERT_TYPE;
2280  rh0->alert.len = 2;
2281  rh0->alert.value = 0;
2282 
2283  rh0->pad.type = 1;
2284  rh0->pad.len = 0;
2285 
2286  rh0->icmp.checksum = 0;
2287 
2288  /* *INDENT-OFF* */
2289  pool_foreach (m, radv_info->mldp_group_pool,
2290  ({
2291  rr.type = m->type;
2292  rr.aux_data_len_u32s = 0;
2293  rr.num_sources = clib_host_to_net_u16 (m->num_sources);
2294  clib_memcpy(&rr.mcast_addr, &m->mcast_address, sizeof(ip6_address_t));
2295 
2296  num_addr_records++;
2297 
2298  vlib_buffer_add_data
2299  (vm, b0->free_list_index, bo0,
2300  (void *)&rr, sizeof(icmp6_multicast_address_record_t));
2301 
2302  payload_length += sizeof( icmp6_multicast_address_record_t);
2303  }));
2304  /* *INDENT-ON* */
2305 
2306  rh0->rsvd = 0;
2307  rh0->num_addr_records = clib_host_to_net_u16 (num_addr_records);
2308 
2309  /* update lengths */
2310  ip0->payload_length = clib_host_to_net_u16 (payload_length);
2311 
2312  rh0->icmp.checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
2313  &bogus_length);
2314  ASSERT (bogus_length == 0);
2315 
2316  /*
2317  * OK to override w/ no regard for actual FIB, because
2318  * ip6-rewrite only looks at the adjacency.
2319  */
2320  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
2321  vnet_main.local_interface_sw_if_index;
2322 
2323  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = radv_info->mcast_adj_index;
2324  b0->flags |= VNET_BUFFER_LOCALLY_ORIGINATED;
2325 
2326  vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "ip6-rewrite-mcast");
2327 
2328  f = vlib_get_frame_to_node (vm, node->index);
2329  to_next = vlib_frame_vector_args (f);
2330  to_next[0] = bo0;
2331  f->n_vectors = 1;
2332 
2333  vlib_put_frame_to_node (vm, node->index, f);
2334  return;
2335 }
2336 
2337 /* *INDENT-OFF* */
2338 VLIB_REGISTER_NODE (ip6_icmp_router_solicitation_node,static) =
2339 {
2340  .function = icmp6_router_solicitation,
2341  .name = "icmp6-router-solicitation",
2342 
2343  .vector_size = sizeof (u32),
2344 
2345  .format_trace = format_icmp6_input_trace,
2346 
2347  .n_next_nodes = ICMP6_ROUTER_SOLICITATION_N_NEXT,
2348  .next_nodes = {
2349  [ICMP6_ROUTER_SOLICITATION_NEXT_DROP] = "error-drop",
2350  [ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW] = "ip6-rewrite-mcast",
2351  [ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX] = "interface-output",
2352  },
2353 };
2354 /* *INDENT-ON* */
2355 
2356 /* send a RA or update the timer info etc.. */
2357 static uword
2358 ip6_neighbor_process_timer_event (vlib_main_t * vm,
2359  vlib_node_runtime_t * node,
2360  vlib_frame_t * frame)
2361 {
2362  vnet_main_t *vnm = vnet_get_main ();
2363  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2364  ip6_radv_t *radv_info;
2365  vlib_frame_t *f = 0;
2366  u32 n_this_frame = 0;
2367  u32 n_left_to_next = 0;
2368  u32 *to_next = 0;
2369  u32 bo0;
2370  icmp6_router_solicitation_header_t *h0;
2371  vlib_buffer_t *b0;
2372  f64 now = vlib_time_now (vm);
2373 
2374  /* Interface ip6 radv info list */
2375  /* *INDENT-OFF* */
2376  pool_foreach (radv_info, nm->if_radv_pool,
2377  ({
2378  if( !vnet_sw_interface_is_admin_up (vnm, radv_info->sw_if_index))
2379  {
2380  radv_info->initial_adverts_sent = radv_info->initial_adverts_count-1;
2381  radv_info->next_multicast_time = now;
2382  radv_info->last_multicast_time = now;
2383  radv_info->last_radv_time = 0;
2384  radv_info->all_routers_mcast = 0;
2385  continue;
2386  }
2387 
2388  /* Make sure that we've joined the all-routers multicast group */
2389  if(!radv_info->all_routers_mcast)
2390  {
2391  /* send MDLP_REPORT_EVENT message */
2392  ip6_neighbor_send_mldpv2_report(radv_info->sw_if_index);
2393  radv_info->all_routers_mcast = 1;
2394  }
2395 
2396  /* is it time to send a multicast RA on this interface? */
2397  if(radv_info->send_radv && (now >= radv_info->next_multicast_time))
2398  {
2399  u32 n_to_alloc = 1;
2400  u32 n_allocated;
2401 
2402  f64 rfn = (radv_info->max_radv_interval - radv_info->min_radv_interval) *
2403  random_f64 (&radv_info->seed) + radv_info->min_radv_interval;
2404 
2405  /* multicast send - compute next multicast send time */
2406  if( radv_info->initial_adverts_sent > 0)
2407  {
2408  radv_info->initial_adverts_sent--;
2409  if(rfn > radv_info-> initial_adverts_interval)
2410  rfn = radv_info-> initial_adverts_interval;
2411 
2412  /* check to see if we are ceasing to send */
2413  if( radv_info->initial_adverts_sent == 0)
2414  if(radv_info->cease_radv)
2415  radv_info->send_radv = 0;
2416  }
2417 
2418  radv_info->next_multicast_time = rfn + now;
2419  radv_info->last_multicast_time = now;
2420 
2421  /* send advert now - build a "solicted" router advert with unspecified source address */
2422  n_allocated = vlib_buffer_alloc_from_free_list
2423  (vm, &bo0, n_to_alloc, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
2424 
2425  if (PREDICT_FALSE(n_allocated == 0))
2426  {
2427  clib_warning ("buffer allocation failure");
2428  continue;
2429  }
2430  b0 = vlib_get_buffer (vm, bo0);
2431  b0->current_length = sizeof( icmp6_router_solicitation_header_t);
2432  b0->error = ICMP6_ERROR_NONE;
2433  vnet_buffer (b0)->sw_if_index[VLIB_RX] = radv_info->sw_if_index;
2434 
2435  h0 = vlib_buffer_get_current (b0);
2436 
2437  memset (h0, 0, sizeof (icmp6_router_solicitation_header_t));
2438 
2439  h0->ip.ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (0x6 << 28);
2440  h0->ip.payload_length = clib_host_to_net_u16 (sizeof (icmp6_router_solicitation_header_t)
2441  - STRUCT_OFFSET_OF (icmp6_router_solicitation_header_t, neighbor));
2442  h0->ip.protocol = IP_PROTOCOL_ICMP6;
2443  h0->ip.hop_limit = 255;
2444 
2445  /* set src/dst address as "unspecified" this marks this packet as internally generated rather than recieved */
2446  h0->ip.src_address.as_u64[0] = 0;
2447  h0->ip.src_address.as_u64[1] = 0;
2448 
2449  h0->ip.dst_address.as_u64[0] = 0;
2450  h0->ip.dst_address.as_u64[1] = 0;
2451 
2452  h0->neighbor.icmp.type = ICMP6_router_solicitation;
2453 
2454  if (PREDICT_FALSE(f == 0))
2455  {
2456  f = vlib_get_frame_to_node (vm, ip6_icmp_router_solicitation_node.index);
2457  to_next = vlib_frame_vector_args (f);
2458  n_left_to_next = VLIB_FRAME_SIZE;
2459  n_this_frame = 0;
2460  }
2461 
2462  n_this_frame++;
2463  n_left_to_next--;
2464  to_next[0] = bo0;
2465  to_next += 1;
2466 
2467  if (PREDICT_FALSE(n_left_to_next == 0))
2468  {
2469  f->n_vectors = n_this_frame;
2470  vlib_put_frame_to_node (vm, ip6_icmp_router_solicitation_node.index, f);
2471  f = 0;
2472  }
2473  }
2474  }));
2475  /* *INDENT-ON* */
2476 
2477  if (f)
2478  {
2479  ASSERT (n_this_frame);
2480  f->n_vectors = n_this_frame;
2481  vlib_put_frame_to_node (vm, ip6_icmp_router_solicitation_node.index, f);
2482  }
2483  return 0;
2484 }
2485 
2486 static uword
2487 ip6_icmp_neighbor_discovery_event_process (vlib_main_t * vm,
2488  vlib_node_runtime_t * node,
2489  vlib_frame_t * frame)
2490 {
2491  uword event_type;
2492  ip6_icmp_neighbor_discovery_event_data_t *event_data;
2493 
2494  /* init code here */
2495 
2496  while (1)
2497  {
2498  vlib_process_wait_for_event_or_clock (vm, 1. /* seconds */ );
2499 
2500  event_data = vlib_process_get_event_data (vm, &event_type);
2501 
2502  if (!event_data)
2503  {
2504  /* No events found: timer expired. */
2505  /* process interface list and send RAs as appropriate, update timer info */
2506  ip6_neighbor_process_timer_event (vm, node, frame);
2507  }
2508  else
2509  {
2510  switch (event_type)
2511  {
2512 
2513  case ICMP6_ND_EVENT_INIT:
2514  break;
2515 
2516  case ~0:
2517  break;
2518 
2519  default:
2520  ASSERT (0);
2521  }
2522 
2523  if (event_data)
2524  _vec_len (event_data) = 0;
2525  }
2526  }
2527  return frame->n_vectors;
2528 }
2529 
2530 /* *INDENT-OFF* */
2531 VLIB_REGISTER_NODE (ip6_icmp_router_advertisement_node,static) =
2532 {
2533  .function = icmp6_router_advertisement,
2534  .name = "icmp6-router-advertisement",
2535 
2536  .vector_size = sizeof (u32),
2537 
2538  .format_trace = format_icmp6_input_trace,
2539 
2540  .n_next_nodes = 1,
2541  .next_nodes = {
2542  [0] = "error-drop",
2543  },
2544 };
2545 /* *INDENT-ON* */
2546 
2547 vlib_node_registration_t ip6_icmp_neighbor_discovery_event_node = {
2548 
2549  .function = ip6_icmp_neighbor_discovery_event_process,
2550  .name = "ip6-icmp-neighbor-discovery-event-process",
2551  .type = VLIB_NODE_TYPE_PROCESS,
2552 };
2553 
2554 static uword
2555 icmp6_neighbor_solicitation (vlib_main_t * vm,
2556  vlib_node_runtime_t * node, vlib_frame_t * frame)
2557 {
2558  return icmp6_neighbor_solicitation_or_advertisement (vm, node, frame,
2559  /* is_solicitation */
2560  1);
2561 }
2562 
2563 static uword
2564 icmp6_neighbor_advertisement (vlib_main_t * vm,
2565  vlib_node_runtime_t * node,
2566  vlib_frame_t * frame)
2567 {
2568  return icmp6_neighbor_solicitation_or_advertisement (vm, node, frame,
2569  /* is_solicitation */
2570  0);
2571 }
2572 
2573 /* *INDENT-OFF* */
2574 VLIB_REGISTER_NODE (ip6_icmp_neighbor_solicitation_node,static) =
2575 {
2576  .function = icmp6_neighbor_solicitation,
2577  .name = "icmp6-neighbor-solicitation",
2578 
2579  .vector_size = sizeof (u32),
2580 
2581  .format_trace = format_icmp6_input_trace,
2582 
2583  .n_next_nodes = ICMP6_NEIGHBOR_SOLICITATION_N_NEXT,
2584  .next_nodes = {
2585  [ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP] = "error-drop",
2586  [ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY] = "interface-output",
2587  },
2588 };
2589 /* *INDENT-ON* */
2590 
2591 /* *INDENT-OFF* */
2592 VLIB_REGISTER_NODE (ip6_icmp_neighbor_advertisement_node,static) =
2593 {
2594  .function = icmp6_neighbor_advertisement,
2595  .name = "icmp6-neighbor-advertisement",
2596 
2597  .vector_size = sizeof (u32),
2598 
2599  .format_trace = format_icmp6_input_trace,
2600 
2601  .n_next_nodes = 1,
2602  .next_nodes = {
2603  [0] = "error-drop",
2604  },
2605 };
2606 /* *INDENT-ON* */
2607 
2608 /* API support functions */
2609 int
2610 ip6_neighbor_ra_config (vlib_main_t * vm, u32 sw_if_index,
2611  u8 suppress, u8 managed, u8 other,
2612  u8 ll_option, u8 send_unicast, u8 cease,
2613  u8 use_lifetime, u32 lifetime,
2614  u32 initial_count, u32 initial_interval,
2615  u32 max_interval, u32 min_interval, u8 is_no)
2616 {
2617  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2618  int error;
2619  u32 ri;
2620 
2621  /* look up the radv_t information for this interface */
2622  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2623  ~0);
2624  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2625  error = (ri != ~0) ? 0 : VNET_API_ERROR_INVALID_SW_IF_INDEX;
2626 
2627  if (!error)
2628  {
2629 
2630  ip6_radv_t *radv_info;
2631  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
2632 
2633  if ((max_interval != 0) && (min_interval == 0))
2634  min_interval = .75 * max_interval;
2635 
2636  max_interval =
2637  (max_interval !=
2638  0) ? ((is_no) ? DEF_MAX_RADV_INTERVAL : max_interval) :
2639  radv_info->max_radv_interval;
2640  min_interval =
2641  (min_interval !=
2642  0) ? ((is_no) ? DEF_MIN_RADV_INTERVAL : min_interval) :
2643  radv_info->min_radv_interval;
2644  lifetime =
2645  (use_lifetime !=
2646  0) ? ((is_no) ? DEF_DEF_RTR_LIFETIME : lifetime) :
2647  radv_info->adv_router_lifetime_in_sec;
2648 
2649  if (lifetime)
2650  {
2651  if (lifetime > MAX_DEF_RTR_LIFETIME)
2652  lifetime = MAX_DEF_RTR_LIFETIME;
2653 
2654  if (lifetime <= max_interval)
2655  return VNET_API_ERROR_INVALID_VALUE;
2656  }
2657 
2658  if (min_interval != 0)
2659  {
2660  if ((min_interval > .75 * max_interval) || (min_interval < 3))
2661  return VNET_API_ERROR_INVALID_VALUE;
2662  }
2663 
2664  if ((initial_count > MAX_INITIAL_RTR_ADVERTISEMENTS) ||
2665  (initial_interval > MAX_INITIAL_RTR_ADVERT_INTERVAL))
2666  return VNET_API_ERROR_INVALID_VALUE;
2667 
2668  /*
2669  if "flag" is set and is_no is true then restore default value else set value corresponding to "flag"
2670  if "flag" is clear don't change corresponding value
2671  */
2672  radv_info->send_radv =
2673  (suppress != 0) ? ((is_no != 0) ? 1 : 0) : radv_info->send_radv;
2674  radv_info->adv_managed_flag =
2675  (managed != 0) ? ((is_no) ? 0 : 1) : radv_info->adv_managed_flag;
2676  radv_info->adv_other_flag =
2677  (other != 0) ? ((is_no) ? 0 : 1) : radv_info->adv_other_flag;
2678  radv_info->adv_link_layer_address =
2679  (ll_option !=
2680  0) ? ((is_no) ? 1 : 0) : radv_info->adv_link_layer_address;
2681  radv_info->send_unicast =
2682  (send_unicast != 0) ? ((is_no) ? 0 : 1) : radv_info->send_unicast;
2683  radv_info->cease_radv =
2684  (cease != 0) ? ((is_no) ? 0 : 1) : radv_info->cease_radv;
2685 
2686  radv_info->min_radv_interval = min_interval;
2687  radv_info->max_radv_interval = max_interval;
2688  radv_info->adv_router_lifetime_in_sec = lifetime;
2689 
2690  radv_info->initial_adverts_count =
2691  (initial_count !=
2692  0) ? ((is_no) ? MAX_INITIAL_RTR_ADVERTISEMENTS : initial_count) :
2693  radv_info->initial_adverts_count;
2694  radv_info->initial_adverts_interval =
2695  (initial_interval !=
2696  0) ? ((is_no) ? MAX_INITIAL_RTR_ADVERT_INTERVAL : initial_interval) :
2697  radv_info->initial_adverts_interval;
2698 
2699  /* restart */
2700  if ((cease != 0) && (is_no))
2701  radv_info->send_radv = 1;
2702 
2703  radv_info->initial_adverts_sent = radv_info->initial_adverts_count - 1;
2704  radv_info->next_multicast_time = vlib_time_now (vm);
2705  radv_info->last_multicast_time = vlib_time_now (vm);
2706  radv_info->last_radv_time = 0;
2707  }
2708  return (error);
2709 }
2710 
2711 int
2712 ip6_neighbor_ra_prefix (vlib_main_t * vm, u32 sw_if_index,
2713  ip6_address_t * prefix_addr, u8 prefix_len,
2714  u8 use_default, u32 val_lifetime, u32 pref_lifetime,
2715  u8 no_advertise, u8 off_link, u8 no_autoconfig,
2716  u8 no_onlink, u8 is_no)
2717 {
2718  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2719  int error;
2720 
2721  u32 ri;
2722 
2723  /* look up the radv_t information for this interface */
2724  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2725  ~0);
2726 
2727  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2728 
2729  error = (ri != ~0) ? 0 : VNET_API_ERROR_INVALID_SW_IF_INDEX;
2730 
2731  if (!error)
2732  {
2733  f64 now = vlib_time_now (vm);
2734  ip6_radv_t *radv_info;
2735  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
2736 
2737  /* prefix info add, delete or update */
2738  ip6_radv_prefix_t *prefix;
2739 
2740  /* lookup prefix info for this address on this interface */
2741  uword *p = mhash_get (&radv_info->address_to_prefix_index, prefix_addr);
2742 
2743  prefix = p ? pool_elt_at_index (radv_info->adv_prefixes_pool, p[0]) : 0;
2744 
2745  if (is_no)
2746  {
2747  /* delete */
2748  if (!prefix)
2749  return VNET_API_ERROR_INVALID_VALUE; /* invalid prefix */
2750 
2751  if (prefix->prefix_len != prefix_len)
2752  return VNET_API_ERROR_INVALID_VALUE_2;
2753 
2754  /* FIXME - Should the DP do this or the CP ? */
2755  /* do specific delete processing here before returning */
2756  /* try to remove from routing table */
2757 
2758  mhash_unset (&radv_info->address_to_prefix_index, prefix_addr,
2759  /* old_value */ 0);
2760  pool_put (radv_info->adv_prefixes_pool, prefix);
2761 
2762  radv_info->initial_adverts_sent =
2763  radv_info->initial_adverts_count - 1;
2764  radv_info->next_multicast_time = vlib_time_now (vm);
2765  radv_info->last_multicast_time = vlib_time_now (vm);
2766  radv_info->last_radv_time = 0;
2767  return (error);
2768  }
2769 
2770  /* adding or changing */
2771  if (!prefix)
2772  {
2773  /* add */
2774  u32 pi;
2775  pool_get (radv_info->adv_prefixes_pool, prefix);
2776  pi = prefix - radv_info->adv_prefixes_pool;
2777  mhash_set (&radv_info->address_to_prefix_index, prefix_addr, pi,
2778  /* old_value */ 0);
2779 
2780  memset (prefix, 0x0, sizeof (ip6_radv_prefix_t));
2781 
2782  prefix->prefix_len = prefix_len;
2783  clib_memcpy (&prefix->prefix, prefix_addr, sizeof (ip6_address_t));
2784 
2785  /* initialize default values */
2786  prefix->adv_on_link_flag = 1; /* L bit set */
2787  prefix->adv_autonomous_flag = 1; /* A bit set */
2788  prefix->adv_valid_lifetime_in_secs = DEF_ADV_VALID_LIFETIME;
2789  prefix->adv_pref_lifetime_in_secs = DEF_ADV_PREF_LIFETIME;
2790  prefix->enabled = 1;
2791  prefix->decrement_lifetime_flag = 1;
2792  prefix->deprecated_prefix_flag = 1;
2793 
2794  if (off_link == 0)
2795  {
2796  /* FIXME - Should the DP do this or the CP ? */
2797  /* insert prefix into routing table as a connected prefix */
2798  }
2799 
2800  if (use_default)
2801  goto restart;
2802  }
2803  else
2804  {
2805 
2806  if (prefix->prefix_len != prefix_len)
2807  return VNET_API_ERROR_INVALID_VALUE_2;
2808 
2809  if (off_link != 0)
2810  {
2811  /* FIXME - Should the DP do this or the CP ? */
2812  /* remove from routing table if already there */
2813  }
2814  }
2815 
2816  if ((val_lifetime == ~0) || (pref_lifetime == ~0))
2817  {
2818  prefix->adv_valid_lifetime_in_secs = ~0;
2819  prefix->adv_pref_lifetime_in_secs = ~0;
2820  prefix->decrement_lifetime_flag = 0;
2821  }
2822  else
2823  {
2824  prefix->adv_valid_lifetime_in_secs = val_lifetime;;
2825  prefix->adv_pref_lifetime_in_secs = pref_lifetime;
2826  }
2827 
2828  /* copy remaining */
2829  prefix->enabled = !(no_advertise != 0);
2830  prefix->adv_on_link_flag = !((off_link != 0) || (no_onlink != 0));
2831  prefix->adv_autonomous_flag = !(no_autoconfig != 0);
2832 
2833  restart:
2834  /* restart */
2835  /* fill in the expiration times */
2836  prefix->valid_lifetime_expires =
2837  now + prefix->adv_valid_lifetime_in_secs;
2838  prefix->pref_lifetime_expires = now + prefix->adv_pref_lifetime_in_secs;
2839 
2840  radv_info->initial_adverts_sent = radv_info->initial_adverts_count - 1;
2841  radv_info->next_multicast_time = vlib_time_now (vm);
2842  radv_info->last_multicast_time = vlib_time_now (vm);
2843  radv_info->last_radv_time = 0;
2844  }
2845  return (error);
2846 }
2847 
2848 clib_error_t *
2849 ip6_neighbor_cmd (vlib_main_t * vm, unformat_input_t * main_input,
2850  vlib_cli_command_t * cmd)
2851 {
2852  vnet_main_t *vnm = vnet_get_main ();
2853  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2854  clib_error_t *error = 0;
2855  u8 is_no = 0;
2856  u8 suppress = 0, managed = 0, other = 0;
2857  u8 suppress_ll_option = 0, send_unicast = 0, cease = 0;
2858  u8 use_lifetime = 0;
2859  u32 sw_if_index, ra_lifetime = 0, ra_initial_count =
2860  0, ra_initial_interval = 0;
2861  u32 ra_max_interval = 0, ra_min_interval = 0;
2862 
2863  unformat_input_t _line_input, *line_input = &_line_input;
2864  vnet_sw_interface_t *sw_if0;
2865 
2866  int add_radv_info = 1;
2867  __attribute__ ((unused)) ip6_radv_t *radv_info = 0;
2868  ip6_address_t ip6_addr;
2869  u32 addr_len;
2870 
2871 
2872  /* Get a line of input. */
2873  if (!unformat_user (main_input, unformat_line_input, line_input))
2874  return 0;
2875 
2876  /* get basic radv info for this interface */
2877  if (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
2878  {
2879 
2880  if (unformat_user (line_input,
2881  unformat_vnet_sw_interface, vnm, &sw_if_index))
2882  {
2883  u32 ri;
2884  ethernet_interface_t *eth_if0 = 0;
2885 
2886  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
2887  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
2888  eth_if0 =
2889  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
2890 
2891  if (!eth_if0)
2892  {
2893  error =
2894  clib_error_return (0, "Interface must be of ethernet type");
2895  goto done;
2896  }
2897 
2898  /* look up the radv_t information for this interface */
2899  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
2900  sw_if_index, ~0);
2901 
2902  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2903 
2904  if (ri != ~0)
2905  {
2906  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
2907  }
2908  else
2909  {
2910  error = clib_error_return (0, "unknown interface %U'",
2911  format_unformat_error, line_input);
2912  goto done;
2913  }
2914  }
2915  else
2916  {
2917  error = clib_error_return (0, "invalid interface name %U'",
2918  format_unformat_error, line_input);
2919  goto done;
2920  }
2921  }
2922 
2923  /* get the rest of the command */
2924  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
2925  {
2926  if (unformat (line_input, "no"))
2927  is_no = 1;
2928  else if (unformat (line_input, "prefix %U/%d",
2929  unformat_ip6_address, &ip6_addr, &addr_len))
2930  {
2931  add_radv_info = 0;
2932  break;
2933  }
2934  else if (unformat (line_input, "ra-managed-config-flag"))
2935  {
2936  managed = 1;
2937  break;
2938  }
2939  else if (unformat (line_input, "ra-other-config-flag"))
2940  {
2941  other = 1;
2942  break;
2943  }
2944  else if (unformat (line_input, "ra-suppress") ||
2945  unformat (line_input, "ra-surpress"))
2946  {
2947  suppress = 1;
2948  break;
2949  }
2950  else if (unformat (line_input, "ra-suppress-link-layer") ||
2951  unformat (line_input, "ra-surpress-link-layer"))
2952  {
2953  suppress_ll_option = 1;
2954  break;
2955  }
2956  else if (unformat (line_input, "ra-send-unicast"))
2957  {
2958  send_unicast = 1;
2959  break;
2960  }
2961  else if (unformat (line_input, "ra-lifetime"))
2962  {
2963  if (!unformat (line_input, "%d", &ra_lifetime))
2964  {
2965  error = unformat_parse_error (line_input);
2966  goto done;
2967  }
2968  use_lifetime = 1;
2969  break;
2970  }
2971  else if (unformat (line_input, "ra-initial"))
2972  {
2973  if (!unformat
2974  (line_input, "%d %d", &ra_initial_count, &ra_initial_interval))
2975  {
2976  error = unformat_parse_error (line_input);
2977  goto done;
2978  }
2979  break;
2980  }
2981  else if (unformat (line_input, "ra-interval"))
2982  {
2983  if (!unformat (line_input, "%d", &ra_max_interval))
2984  {
2985  error = unformat_parse_error (line_input);
2986  goto done;
2987  }
2988 
2989  if (!unformat (line_input, "%d", &ra_min_interval))
2990  ra_min_interval = 0;
2991  break;
2992  }
2993  else if (unformat (line_input, "ra-cease"))
2994  {
2995  cease = 1;
2996  break;
2997  }
2998  else
2999  {
3000  error = unformat_parse_error (line_input);
3001  goto done;
3002  }
3003  }
3004 
3005  if (add_radv_info)
3006  {
3007  ip6_neighbor_ra_config (vm, sw_if_index,
3008  suppress, managed, other,
3009  suppress_ll_option, send_unicast, cease,
3010  use_lifetime, ra_lifetime,
3011  ra_initial_count, ra_initial_interval,
3012  ra_max_interval, ra_min_interval, is_no);
3013  }
3014  else
3015  {
3016  u32 valid_lifetime_in_secs = 0;
3017  u32 pref_lifetime_in_secs = 0;
3018  u8 use_prefix_default_values = 0;
3019  u8 no_advertise = 0;
3020  u8 off_link = 0;
3021  u8 no_autoconfig = 0;
3022  u8 no_onlink = 0;
3023 
3024  /* get the rest of the command */
3025  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3026  {
3027  if (unformat (line_input, "default"))
3028  {
3029  use_prefix_default_values = 1;
3030  break;
3031  }
3032  else if (unformat (line_input, "infinite"))
3033  {
3034  valid_lifetime_in_secs = ~0;
3035  pref_lifetime_in_secs = ~0;
3036  break;
3037  }
3038  else if (unformat (line_input, "%d %d", &valid_lifetime_in_secs,
3039  &pref_lifetime_in_secs))
3040  break;
3041  else
3042  break;
3043  }
3044 
3045 
3046  /* get the rest of the command */
3047  while (!use_prefix_default_values &&
3048  unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3049  {
3050  if (unformat (line_input, "no-advertise"))
3051  no_advertise = 1;
3052  else if (unformat (line_input, "off-link"))
3053  off_link = 1;
3054  else if (unformat (line_input, "no-autoconfig"))
3055  no_autoconfig = 1;
3056  else if (unformat (line_input, "no-onlink"))
3057  no_onlink = 1;
3058  else
3059  {
3060  error = unformat_parse_error (line_input);
3061  goto done;
3062  }
3063  }
3064 
3065  ip6_neighbor_ra_prefix (vm, sw_if_index,
3066  &ip6_addr, addr_len,
3067  use_prefix_default_values,
3068  valid_lifetime_in_secs,
3069  pref_lifetime_in_secs,
3070  no_advertise,
3071  off_link, no_autoconfig, no_onlink, is_no);
3072  }
3073 
3074 done:
3075  unformat_free (line_input);
3076 
3077  return error;
3078 }
3079 
3080 static void
3081 ip6_print_addrs (vlib_main_t * vm, u32 * addrs)
3082 {
3083  ip_lookup_main_t *lm = &ip6_main.lookup_main;
3084  u32 i;
3085 
3086  for (i = 0; i < vec_len (addrs); i++)
3087  {
3088  ip_interface_address_t *a =
3089  pool_elt_at_index (lm->if_address_pool, addrs[i]);
3090  ip6_address_t *address = ip_interface_address_get_address (lm, a);
3091 
3092  vlib_cli_output (vm, "\t\t%U/%d",
3093  format_ip6_address, address, a->address_length);
3094  }
3095 }
3096 
3097 static clib_error_t *
3098 show_ip6_interface_cmd (vlib_main_t * vm,
3099  unformat_input_t * input, vlib_cli_command_t * cmd)
3100 {
3101  vnet_main_t *vnm = vnet_get_main ();
3102  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3103  clib_error_t *error = 0;
3104  u32 sw_if_index;
3105 
3106  sw_if_index = ~0;
3107 
3108  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
3109  {
3110  u32 ri;
3111 
3112  /* look up the radv_t information for this interface */
3113  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
3114  sw_if_index, ~0);
3115 
3116  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3117 
3118  if (ri != ~0)
3119  {
3120  ip_lookup_main_t *lm = &ip6_main.lookup_main;
3121  ip6_radv_t *radv_info;
3122  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3123 
3124  vlib_cli_output (vm, "%U is admin %s\n",
3125  format_vnet_sw_interface_name, vnm,
3126  vnet_get_sw_interface (vnm, sw_if_index),
3127  (vnet_sw_interface_is_admin_up (vnm, sw_if_index) ?
3128  "up" : "down"));
3129 
3130  u32 ai;
3131  u32 *link_scope = 0, *global_scope = 0;
3132  u32 *local_scope = 0, *unknown_scope = 0;
3133  ip_interface_address_t *a;
3134 
3135  vec_validate_init_empty (lm->if_address_pool_index_by_sw_if_index,
3136  sw_if_index, ~0);
3137  ai = lm->if_address_pool_index_by_sw_if_index[sw_if_index];
3138 
3139  while (ai != (u32) ~ 0)
3140  {
3141  a = pool_elt_at_index (lm->if_address_pool, ai);
3142  ip6_address_t *address =
3143  ip_interface_address_get_address (lm, a);
3144 
3145  if (ip6_address_is_link_local_unicast (address))
3146  vec_add1 (link_scope, ai);
3147  else if (ip6_address_is_global_unicast (address))
3148  vec_add1 (global_scope, ai);
3149  else if (ip6_address_is_local_unicast (address))
3150  vec_add1 (local_scope, ai);
3151  else
3152  vec_add1 (unknown_scope, ai);
3153 
3154  ai = a->next_this_sw_interface;
3155  }
3156 
3157  if (vec_len (link_scope))
3158  {
3159  vlib_cli_output (vm, "\tLink-local address(es):\n");
3160  ip6_print_addrs (vm, link_scope);
3161  vec_free (link_scope);
3162  }
3163 
3164  if (vec_len (local_scope))
3165  {
3166  vlib_cli_output (vm, "\tLocal unicast address(es):\n");
3167  ip6_print_addrs (vm, local_scope);
3168  vec_free (local_scope);
3169  }
3170 
3171  if (vec_len (global_scope))
3172  {
3173  vlib_cli_output (vm, "\tGlobal unicast address(es):\n");
3174  ip6_print_addrs (vm, global_scope);
3175  vec_free (global_scope);
3176  }
3177 
3178  if (vec_len (unknown_scope))
3179  {
3180  vlib_cli_output (vm, "\tOther-scope address(es):\n");
3181  ip6_print_addrs (vm, unknown_scope);
3182  vec_free (unknown_scope);
3183  }
3184 
3185  vlib_cli_output (vm, "\tJoined group address(es):\n");
3186  ip6_mldp_group_t *m;
3187  /* *INDENT-OFF* */
3188  pool_foreach (m, radv_info->mldp_group_pool,
3189  ({
3190  vlib_cli_output (vm, "\t\t%U\n", format_ip6_address,
3191  &m->mcast_address);
3192  }));
3193  /* *INDENT-ON* */
3194 
3195  vlib_cli_output (vm, "\tAdvertised Prefixes:\n");
3196  ip6_radv_prefix_t *p;
3197  /* *INDENT-OFF* */
3198  pool_foreach (p, radv_info->adv_prefixes_pool,
3199  ({
3200  vlib_cli_output (vm, "\t\tprefix %U, length %d\n",
3201  format_ip6_address, &p->prefix, p->prefix_len);
3202  }));
3203  /* *INDENT-ON* */
3204 
3205  vlib_cli_output (vm, "\tMTU is %d\n", radv_info->adv_link_mtu);
3206  vlib_cli_output (vm, "\tICMP error messages are unlimited\n");
3207  vlib_cli_output (vm, "\tICMP redirects are disabled\n");
3208  vlib_cli_output (vm, "\tICMP unreachables are not sent\n");
3209  vlib_cli_output (vm, "\tND DAD is disabled\n");
3210  //vlib_cli_output (vm, "\tND reachable time is %d milliseconds\n",);
3211  vlib_cli_output (vm, "\tND advertised reachable time is %d\n",
3212  radv_info->adv_neighbor_reachable_time_in_msec);
3213  vlib_cli_output (vm,
3214  "\tND advertised retransmit interval is %d (msec)\n",
3215  radv_info->
3216  adv_time_in_msec_between_retransmitted_neighbor_solicitations);
3217 
3218  u32 ra_interval = radv_info->max_radv_interval;
3219  u32 ra_interval_min = radv_info->min_radv_interval;
3220  vlib_cli_output (vm,
3221  "\tND router advertisements are sent every %d seconds (min interval is %d)\n",
3222  ra_interval, ra_interval_min);
3223  vlib_cli_output (vm,
3224  "\tND router advertisements live for %d seconds\n",
3225  radv_info->adv_router_lifetime_in_sec);
3226  vlib_cli_output (vm,
3227  "\tHosts %s stateless autoconfig for addresses\n",
3228  (radv_info->adv_managed_flag) ? "use" :
3229  " don't use");
3230  vlib_cli_output (vm, "\tND router advertisements sent %d\n",
3231  radv_info->n_advertisements_sent);
3232  vlib_cli_output (vm, "\tND router solicitations received %d\n",
3233  radv_info->n_solicitations_rcvd);
3234  vlib_cli_output (vm, "\tND router solicitations dropped %d\n",
3235  radv_info->n_solicitations_dropped);
3236  }
3237  else
3238  {
3239  error = clib_error_return (0, "IPv6 not enabled on interface",
3240  format_unformat_error, input);
3241 
3242  }
3243  }
3244  return error;
3245 }
3246 
3247 /*?
3248  * This command is used to display various IPv6 attributes on a given
3249  * interface.
3250  *
3251  * @cliexpar
3252  * Example of how to display IPv6 settings:
3253  * @cliexstart{show ip6 interface GigabitEthernet2/0/0}
3254  * GigabitEthernet2/0/0 is admin up
3255  * Link-local address(es):
3256  * fe80::ab8/64
3257  * Joined group address(es):
3258  * ff02::1
3259  * ff02::2
3260  * ff02::16
3261  * ff02::1:ff00:ab8
3262  * Advertised Prefixes:
3263  * prefix fe80::fe:28ff:fe9c:75b3, length 64
3264  * MTU is 1500
3265  * ICMP error messages are unlimited
3266  * ICMP redirects are disabled
3267  * ICMP unreachables are not sent
3268  * ND DAD is disabled
3269  * ND advertised reachable time is 0
3270  * ND advertised retransmit interval is 0 (msec)
3271  * ND router advertisements are sent every 200 seconds (min interval is 150)
3272  * ND router advertisements live for 600 seconds
3273  * Hosts use stateless autoconfig for addresses
3274  * ND router advertisements sent 19336
3275  * ND router solicitations received 0
3276  * ND router solicitations dropped 0
3277  * @cliexend
3278  * Example of output if IPv6 is not enabled on the interface:
3279  * @cliexstart{show ip6 interface GigabitEthernet2/0/0}
3280  * show ip6 interface: IPv6 not enabled on interface
3281  * @cliexend
3282 ?*/
3283 /* *INDENT-OFF* */
3284 VLIB_CLI_COMMAND (show_ip6_interface_command, static) =
3285 {
3286  .path = "show ip6 interface",
3287  .function = show_ip6_interface_cmd,
3288  .short_help = "show ip6 interface <interface>",
3289 };
3290 /* *INDENT-ON* */
3291 
3292 clib_error_t *
3293 disable_ip6_interface (vlib_main_t * vm, u32 sw_if_index)
3294 {
3295  clib_error_t *error = 0;
3296  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3297  u32 ri;
3298 
3299  /* look up the radv_t information for this interface */
3300  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
3301  ~0);
3302  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3303 
3304  /* if not created - do nothing */
3305  if (ri != ~0)
3306  {
3307  vnet_main_t *vnm = vnet_get_main ();
3308  ip6_radv_t *radv_info;
3309 
3310  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3311 
3312  /* check radv_info ref count for other ip6 addresses on this interface */
3313  /* This implicitly excludes the link local address */
3314  if (radv_info->ref_count == 0)
3315  {
3316  /* essentially "disables" ipv6 on this interface */
3317  error = ip6_add_del_interface_address (vm, sw_if_index,
3318  &radv_info->
3319  link_local_address, 128,
3320  1 /* is_del */ );
3321 
3322  ip6_neighbor_sw_interface_add_del (vnm, sw_if_index,
3323  0 /* is_add */ );
3324  ip6_mfib_interface_enable_disable (sw_if_index, 0);
3325  }
3326  }
3327  return error;
3328 }
3329 
3330 int
3331 ip6_interface_enabled (vlib_main_t * vm, u32 sw_if_index)
3332 {
3333  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3334  u32 ri = ~0;
3335 
3336  /* look up the radv_t information for this interface */
3337  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
3338  ~0);
3339 
3340  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3341 
3342  return ri != ~0;
3343 }
3344 
3345 clib_error_t *
3346 enable_ip6_interface (vlib_main_t * vm, u32 sw_if_index)
3347 {
3348  clib_error_t *error = 0;
3349  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3350  u32 ri;
3351  int is_add = 1;
3352 
3353  /* look up the radv_t information for this interface */
3354  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
3355  ~0);
3356 
3357  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3358 
3359  /* if not created yet */
3360  if (ri == ~0)
3361  {
3362  vnet_main_t *vnm = vnet_get_main ();
3363  vnet_sw_interface_t *sw_if0;
3364 
3365  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
3366  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
3367  {
3368  ethernet_interface_t *eth_if0;
3369 
3370  eth_if0 =
3371  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
3372  if (eth_if0)
3373  {
3374  /* create radv_info. for this interface. This holds all the info needed for router adverts */
3375  ri =
3376  ip6_neighbor_sw_interface_add_del (vnm, sw_if_index, is_add);
3377 
3378  if (ri != ~0)
3379  {
3380  ip6_radv_t *radv_info;
3381  ip6_address_t link_local_address;
3382 
3383  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3384 
3385  ip6_link_local_address_from_ethernet_mac_address
3386  (&link_local_address, eth_if0->address);
3387 
3388  sw_if0 = vnet_get_sw_interface (vnm, sw_if_index);
3389  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_SUB)
3390  {
3391  /* make up an interface id */
3392  md5_context_t m;
3393  u8 digest[16];
3394 
3395  link_local_address.as_u64[0] = radv_info->randomizer;
3396 
3397  md5_init (&m);
3398  md5_add (&m, &link_local_address, 16);
3399  md5_finish (&m, digest);
3400 
3401  clib_memcpy (&link_local_address, digest, 16);
3402 
3403  radv_info->randomizer = link_local_address.as_u64[0];
3404 
3405  link_local_address.as_u64[0] =
3406  clib_host_to_net_u64 (0xFE80000000000000ULL);
3407  /* clear u bit */
3408  link_local_address.as_u8[8] &= 0xfd;
3409  }
3410 
3411  ip6_mfib_interface_enable_disable (sw_if_index, 1);
3412 
3413  /* essentially "enables" ipv6 on this interface */
3414  error = ip6_add_del_interface_address (vm, sw_if_index,
3415  &link_local_address,
3416  128
3417  /* address width */ ,
3418  0 /* is_del */ );
3419 
3420  if (error)
3421  ip6_neighbor_sw_interface_add_del (vnm, sw_if_index,
3422  !is_add);
3423  else
3424  {
3425  radv_info->link_local_address = link_local_address;
3426  }
3427  }
3428  }
3429  }
3430  }
3431  return error;
3432 }
3433 
3434 static clib_error_t *
3435 enable_ip6_interface_cmd (vlib_main_t * vm,
3436  unformat_input_t * input, vlib_cli_command_t * cmd)
3437 {
3438  vnet_main_t *vnm = vnet_get_main ();
3439  clib_error_t *error = 0;
3440  u32 sw_if_index;
3441 
3442  sw_if_index = ~0;
3443 
3444  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
3445  {
3446  enable_ip6_interface (vm, sw_if_index);
3447  }
3448  else
3449  {
3450  error = clib_error_return (0, "unknown interface\n'",
3451  format_unformat_error, input);
3452 
3453  }
3454  return error;
3455 }
3456 
3457 /*?
3458  * This command is used to enable IPv6 on a given interface.
3459  *
3460  * @cliexpar
3461  * Example of how enable IPv6 on a given interface:
3462  * @cliexcmd{enable ip6 interface GigabitEthernet2/0/0}
3463 ?*/
3464 /* *INDENT-OFF* */
3465 VLIB_CLI_COMMAND (enable_ip6_interface_command, static) =
3466 {
3467  .path = "enable ip6 interface",
3468  .function = enable_ip6_interface_cmd,
3469  .short_help = "enable ip6 interface <interface>",
3470 };
3471 /* *INDENT-ON* */
3472 
3473 static clib_error_t *
3474 disable_ip6_interface_cmd (vlib_main_t * vm,
3475  unformat_input_t * input, vlib_cli_command_t * cmd)
3476 {
3477  vnet_main_t *vnm = vnet_get_main ();
3478  clib_error_t *error = 0;
3479  u32 sw_if_index;
3480 
3481  sw_if_index = ~0;
3482 
3483  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
3484  {
3485  error = disable_ip6_interface (vm, sw_if_index);
3486  }
3487  else
3488  {
3489  error = clib_error_return (0, "unknown interface\n'",
3490  format_unformat_error, input);
3491 
3492  }
3493  return error;
3494 }
3495 
3496 /*?
3497  * This command is used to disable IPv6 on a given interface.
3498  *
3499  * @cliexpar
3500  * Example of how disable IPv6 on a given interface:
3501  * @cliexcmd{disable ip6 interface GigabitEthernet2/0/0}
3502 ?*/
3503 /* *INDENT-OFF* */
3504 VLIB_CLI_COMMAND (disable_ip6_interface_command, static) =
3505 {
3506  .path = "disable ip6 interface",
3507  .function = disable_ip6_interface_cmd,
3508  .short_help = "disable ip6 interface <interface>",
3509 };
3510 /* *INDENT-ON* */
3511 
3512 /*?
3513  * This command is used to configure the neighbor discovery
3514  * parameters on a given interface. Use the '<em>show ip6 interface</em>'
3515  * command to display some of the current neighbor discovery parameters
3516  * on a given interface. This command has three formats:
3517  *
3518  *
3519  * <b>Format 1 - Router Advertisement Options:</b> (Only one can be entered in a single command)
3520  *
3521  * '<em><b>ip6 nd <interface> [no] [ra-managed-config-flag] | [ra-other-config-flag] | [ra-suppress] | [ra-suppress-link-layer] | [ra-send-unicast] | [ra-lifetime <lifetime>] | [ra-initial <cnt> <interval>] | [ra-interval <max-interval> [<min-interval>]] | [ra-cease]</b></em>'
3522  *
3523  * Where:
3524  *
3525  * <em>[no] ra-managed-config-flag</em> - Advertises in ICMPv6
3526  * router-advertisement messages to use stateful address
3527  * auto-configuration to obtain address information (sets the M-bit).
3528  * Default is the M-bit is not set and the '<em>no</em>' option
3529  * returns it to this default state.
3530  *
3531  * <em>[no] ra-other-config-flag</em> - Indicates in ICMPv6
3532  * router-advertisement messages that hosts use stateful auto
3533  * configuration to obtain nonaddress related information (sets
3534  * the O-bit). Default is the O-bit is not set and the '<em>no</em>'
3535  * option returns it to this default state.
3536  *
3537  * <em>[no] ra-suppress</em> - Disables sending ICMPv6 router-advertisement
3538  * messages. The '<em>no</em>' option implies to enable sending ICMPv6
3539  * router-advertisement messages.
3540  *
3541  * <em>[no] ra-suppress-link-layer</em> - Indicates not to include the
3542  * optional source link-layer address in the ICMPv6 router-advertisement
3543  * messages. Default is to include the optional source link-layer address
3544  * and the '<em>no</em>' option returns it to this default state.
3545  *
3546  * <em>[no] ra-send-unicast</em> - Use the source address of the
3547  * router-solicitation message if availiable. The default is to use
3548  * multicast address of all nodes, and the '<em>no</em>' option returns
3549  * it to this default state.
3550  *
3551  * <em>[no] ra-lifetime <lifetime></em> - Advertises the lifetime of a
3552  * default router in ICMPv6 router-advertisement messages. The range is
3553  * from 0 to 9000 seconds. '<em><lifetime></em>' must be greater than
3554  * '<em><max-interval></em>'. The default value is 600 seconds and the
3555  * '<em>no</em>' option returns it to this default value.
3556  *
3557  * <em>[no] ra-initial <cnt> <interval></em> - Number of initial ICMPv6
3558  * router-advertisement messages sent and the interval between each
3559  * message. Range for count is 1 - 3 and default is 3. Range for interval
3560  * is 1 to 16 seconds, and default is 16 seconds. The '<em>no</em>' option
3561  * returns both to their default value.
3562  *
3563  * <em>[no] ra-interval <max-interval> [<min-interval>]</em> - Configures the
3564  * interval between sending ICMPv6 router-advertisement messages. The
3565  * range for max-interval is from 4 to 200 seconds. min-interval can not
3566  * be more than 75% of max-interval. If not set, min-interval will be
3567  * set to 75% of max-interval. The range for min-interval is from 3 to
3568  * 150 seconds. The '<em>no</em>' option returns both to their default
3569  * value.
3570  *
3571  * <em>[no] ra-cease</em> - Cease sending ICMPv6 router-advertisement messages.
3572  * The '<em>no</em>' options implies to start (or restart) sending
3573  * ICMPv6 router-advertisement messages.
3574  *
3575  *
3576  * <b>Format 2 - Prefix Options:</b>
3577  *
3578  * '<em><b>ip6 nd <interface> [no] prefix <ip6-address>/<width> [<valid-lifetime> <pref-lifetime> | infinite] [no-advertise] [off-link] [no-autoconfig] [no-onlink]</b></em>'
3579  *
3580  * Where:
3581  *
3582  * <em>no</em> - All additional flags are ignored and the prefix is deleted.
3583  *
3584  * <em><valid-lifetime> <pref-lifetime></em> - '<em><valid-lifetime></em>' is the
3585  * length of time in seconds during what the prefix is valid for the purpose of
3586  * on-link determination. Range is 7203 to 2592000 seconds and default is 2592000
3587  * seconds (30 days). '<em><pref-lifetime></em>' is the prefered-lifetime and is the
3588  * length of time in seconds during what addresses generated from the prefix remain
3589  * preferred. Range is 0 to 604800 seconds and default is 604800 seconds (7 days).
3590  *
3591  * <em>infinite</em> - Both '<em><valid-lifetime></em>' and '<em><<pref-lifetime></em>'
3592  * are inifinte, no timeout.
3593  *
3594  * <em>no-advertise</em> - Do not send full router address in prefix
3595  * advertisement. Default is to advertise (i.e. - This flag is off by default).
3596  *
3597  * <em>off-link</em> - Prefix is off-link, clear L-bit in packet. Default is on-link
3598  * (i.e. - This flag is off and L-bit in packet is set by default and this prefix can
3599  * be used for on-link determination). '<em>no-onlink</em>' also controls the L-bit.
3600  *
3601  * <em>no-autoconfig</em> - Do not use prefix for autoconfiguration, clear A-bit in packet.
3602  * Default is autoconfig (i.e. - This flag is off and A-bit in packet is set by default.
3603  *
3604  * <em>no-onlink</em> - Do not use prefix for onlink determination, clear L-bit in packet.
3605  * Default is on-link (i.e. - This flag is off and L-bit in packet is set by default and
3606  * this prefix can be used for on-link determination). '<em>off-link</em>' also controls
3607  * the L-bit.
3608  *
3609  *
3610  * <b>Format 3: - Default of Prefix:</b>
3611  *
3612  * '<em><b>ip6 nd <interface> [no] prefix <ip6-address>/<width> default</b></em>'
3613  *
3614  * When a new prefix is added (or existing one is being overwritten) <em>default</em>
3615  * uses default values for the prefix. If <em>no</em> is used, the <em>default</em>
3616  * is ignored and the prefix is deleted.
3617  *
3618  *
3619  * @cliexpar
3620  * Example of how set a router advertisement option:
3621  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 ra-interval 100 20}
3622  * Example of how to add a prefix:
3623  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 prefix fe80::fe:28ff:fe9c:75b3/64 infinite no-advertise}
3624  * Example of how to delete a prefix:
3625  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 no prefix fe80::fe:28ff:fe9c:75b3/64}
3626 ?*/
3627 /* *INDENT-OFF* */
3628 VLIB_CLI_COMMAND (ip6_nd_command, static) =
3629 {
3630  .path = "ip6 nd",
3631  .short_help = "ip6 nd <interface> ...",
3632  .function = ip6_neighbor_cmd,
3633 };
3634 /* *INDENT-ON* */
3635 
3636 clib_error_t *
3637 set_ip6_link_local_address (vlib_main_t * vm,
3638  u32 sw_if_index, ip6_address_t * address)
3639 {
3640  clib_error_t *error = 0;
3641  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3642  u32 ri;
3643  ip6_radv_t *radv_info;
3644  vnet_main_t *vnm = vnet_get_main ();
3645 
3646  if (!ip6_address_is_link_local_unicast (address))
3647  {
3648  vnm->api_errno = VNET_API_ERROR_ADDRESS_NOT_LINK_LOCAL;
3649  return (error = clib_error_return (0, "address not link-local",
3650  format_unformat_error));
3651  }
3652 
3653  /* call enable ipv6 */
3654  enable_ip6_interface (vm, sw_if_index);
3655 
3656  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3657 
3658  if (ri != ~0)
3659  {
3660  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3661 
3662  /* save if link local address (overwrite default) */
3663 
3664  /* delete the old one */
3665  error = ip6_add_del_interface_address (vm, sw_if_index,
3666  &radv_info->link_local_address,
3667  128, 1 /* is_del */ );
3668 
3669  if (!error)
3670  {
3671  /* add the new one */
3672  error = ip6_add_del_interface_address (vm, sw_if_index,
3673  address, 128,
3674  0 /* is_del */ );
3675 
3676  if (!error)
3677  {
3678  radv_info->link_local_address = *address;
3679  }
3680  }
3681  }
3682  else
3683  {
3684  vnm->api_errno = VNET_API_ERROR_IP6_NOT_ENABLED;
3685  error = clib_error_return (0, "ip6 not enabled for interface",
3686  format_unformat_error);
3687  }
3688  return error;
3689 }
3690 
3691 clib_error_t *
3692 set_ip6_link_local_address_cmd (vlib_main_t * vm,
3693  unformat_input_t * input,
3694  vlib_cli_command_t * cmd)
3695 {
3696  vnet_main_t *vnm = vnet_get_main ();
3697  clib_error_t *error = 0;
3698  u32 sw_if_index;
3699  ip6_address_t ip6_addr;
3700 
3701  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
3702  {
3703  /* get the rest of the command */
3704  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
3705  {
3706  if (unformat (input, "%U", unformat_ip6_address, &ip6_addr))
3707  break;
3708  else
3709  return (unformat_parse_error (input));
3710  }
3711  }
3712  error = set_ip6_link_local_address (vm, sw_if_index, &ip6_addr);
3713  return error;
3714 }
3715 
3716 /*?
3717  * This command is used to assign an IPv6 Link-local address to an
3718  * interface. This command will enable IPv6 on an interface if it
3719  * is not already enabled. Use the '<em>show ip6 interface</em>' command
3720  * to display the assigned Link-local address.
3721  *
3722  * @cliexpar
3723  * Example of how to assign an IPv6 Link-local address to an interface:
3724  * @cliexcmd{set ip6 link-local address GigabitEthernet2/0/0 FE80::AB8}
3725 ?*/
3726 /* *INDENT-OFF* */
3727 VLIB_CLI_COMMAND (set_ip6_link_local_address_command, static) =
3728 {
3729  .path = "set ip6 link-local address",
3730  .short_help = "set ip6 link-local address <interface> <ip6-address>",
3731  .function = set_ip6_link_local_address_cmd,
3732 };
3733 /* *INDENT-ON* */
3734 
3735 /**
3736  * @brief callback when an interface address is added or deleted
3737  */
3738 static void
3739 ip6_neighbor_add_del_interface_address (ip6_main_t * im,
3740  uword opaque,
3741  u32 sw_if_index,
3742  ip6_address_t * address,
3743  u32 address_length,
3744  u32 if_address_index, u32 is_delete)
3745 {
3746  vnet_main_t *vnm = vnet_get_main ();
3747  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3748  u32 ri;
3749  vlib_main_t *vm = vnm->vlib_main;
3750  ip6_radv_t *radv_info;
3751  ip6_address_t a;
3752 
3753  /* create solicited node multicast address for this interface adddress */
3754  ip6_set_solicited_node_multicast_address (&a, 0);
3755 
3756  a.as_u8[0xd] = address->as_u8[0xd];
3757  a.as_u8[0xe] = address->as_u8[0xe];
3758  a.as_u8[0xf] = address->as_u8[0xf];
3759 
3760  if (!is_delete)
3761  {
3762  /* try to create radv_info - does nothing if ipv6 already enabled */
3763  enable_ip6_interface (vm, sw_if_index);
3764 
3765  /* look up the radv_t information for this interface */
3766  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
3767  sw_if_index, ~0);
3768  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3769  if (ri != ~0)
3770  {
3771  /* get radv_info */
3772  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3773 
3774  /* add address */
3775  if (!ip6_address_is_link_local_unicast (address))
3776  radv_info->ref_count++;
3777 
3778  ip6_neighbor_add_mld_prefix (radv_info, &a);
3779  }
3780  }
3781  else
3782  {
3783 
3784  /* delete */
3785  /* look up the radv_t information for this interface */
3786  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
3787  sw_if_index, ~0);
3788  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3789 
3790  if (ri != ~0)
3791  {
3792  /* get radv_info */
3793  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3794 
3795  ip6_neighbor_del_mld_prefix (radv_info, &a);
3796 
3797  /* if interface up send MLDP "report" */
3798  radv_info->all_routers_mcast = 0;
3799 
3800  /* add address */
3801  if (!ip6_address_is_link_local_unicast (address))
3802  radv_info->ref_count--;
3803  }
3804  /* Ensure that IPv6 is disabled, and LL removed after ref_count reaches 0 */
3805  disable_ip6_interface (vm, sw_if_index);
3806  }
3807 }
3808 
3809 clib_error_t *
3810 ip6_set_neighbor_limit (u32 neighbor_limit)
3811 {
3812  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3813 
3814  nm->limit_neighbor_cache_size = neighbor_limit;
3815  return 0;
3816 }
3817 
3818 static clib_error_t *
3819 ip6_neighbor_init (vlib_main_t * vm)
3820 {
3821  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3822  ip6_main_t *im = &ip6_main;
3823 
3824  mhash_init (&nm->neighbor_index_by_key,
3825  /* value size */ sizeof (uword),
3826  /* key size */ sizeof (ip6_neighbor_key_t));
3827 
3828  icmp6_register_type (vm, ICMP6_neighbor_solicitation,
3829  ip6_icmp_neighbor_solicitation_node.index);
3830  icmp6_register_type (vm, ICMP6_neighbor_advertisement,
3831  ip6_icmp_neighbor_advertisement_node.index);
3832  icmp6_register_type (vm, ICMP6_router_solicitation,
3833  ip6_icmp_router_solicitation_node.index);
3834  icmp6_register_type (vm, ICMP6_router_advertisement,
3835  ip6_icmp_router_advertisement_node.index);
3836 
3837  /* handler node for ip6 neighbor discovery events and timers */
3838  vlib_register_node (vm, &ip6_icmp_neighbor_discovery_event_node);
3839 
3840  /* add call backs */
3841  ip6_add_del_interface_address_callback_t cb;
3842  memset (&cb, 0x0, sizeof (ip6_add_del_interface_address_callback_t));
3843 
3844  /* when an interface address changes... */
3845  cb.function = ip6_neighbor_add_del_interface_address;
3846  cb.function_opaque = 0;
3847  vec_add1 (im->add_del_interface_address_callbacks, cb);
3848 
3849  mhash_init (&nm->pending_resolutions_by_address,
3850  /* value size */ sizeof (uword),
3851  /* key size */ sizeof (ip6_address_t));
3852 
3853  mhash_init (&nm->mac_changes_by_address,
3854  /* value size */ sizeof (uword),
3855  /* key size */ sizeof (ip6_address_t));
3856 
3857  /* default, configurable */
3858  nm->limit_neighbor_cache_size = 50000;
3859 
3860 #if 0
3861  /* $$$$ Hack fix for today */
3862  vec_validate_init_empty
3863  (im->discover_neighbor_next_index_by_hw_if_index, 32, 0 /* drop */ );
3864 #endif
3865 
3866  return 0;
3867 }
3868 
3869 VLIB_INIT_FUNCTION (ip6_neighbor_init);
3870 
3871 
3872 void
3873 vnet_register_ip6_neighbor_resolution_event (vnet_main_t * vnm,
3874  void *address_arg,
3875  uword node_index,
3876  uword type_opaque, uword data)
3877 {
3878  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3879  ip6_address_t *address = address_arg;
3880  uword *p;
3881  pending_resolution_t *pr;
3882 
3883  pool_get (nm->pending_resolutions, pr);
3884 
3885  pr->next_index = ~0;
3886  pr->node_index = node_index;
3887  pr->type_opaque = type_opaque;
3888  pr->data = data;
3889 
3890  p = mhash_get (&nm->pending_resolutions_by_address, address);
3891  if (p)
3892  {
3893  /* Insert new resolution at the head of the list */
3894  pr->next_index = p[0];
3895  mhash_unset (&nm->pending_resolutions_by_address, address, 0);
3896  }
3897 
3898  mhash_set (&nm->pending_resolutions_by_address, address,
3899  pr - nm->pending_resolutions, 0 /* old value */ );
3900 }
3901 
3902 int
3903 vnet_add_del_ip6_nd_change_event (vnet_main_t * vnm,
3904  void *data_callback,
3905  u32 pid,
3906  void *address_arg,
3907  uword node_index,
3908  uword type_opaque, uword data, int is_add)
3909 {
3910  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3911  ip6_address_t *address = address_arg;
3912  uword *p;
3913  pending_resolution_t *mc;
3914  void (*fp) (u32, u8 *) = data_callback;
3915 
3916  if (is_add)
3917  {
3918  pool_get (nm->mac_changes, mc);
3919 
3920  mc->next_index = ~0;
3921  mc->node_index = node_index;
3922  mc->type_opaque = type_opaque;
3923  mc->data = data;
3924  mc->data_callback = data_callback;
3925  mc->pid = pid;
3926 
3927  p = mhash_get (&nm->mac_changes_by_address, address);
3928  if (p)
3929  {
3930  /* Insert new resolution at the head of the list */
3931  mc->next_index = p[0];
3932  mhash_unset (&nm->mac_changes_by_address, address, 0);
3933  }
3934 
3935  mhash_set (&nm->mac_changes_by_address, address,
3936  mc - nm->mac_changes, 0);
3937  return 0;
3938  }
3939  else
3940  {
3941  u32 index;
3942  pending_resolution_t *mc_last = 0;
3943 
3944  p = mhash_get (&nm->mac_changes_by_address, address);
3945  if (p == 0)
3946  return VNET_API_ERROR_NO_SUCH_ENTRY;
3947 
3948  index = p[0];
3949 
3950  while (index != (u32) ~ 0)
3951  {
3952  mc = pool_elt_at_index (nm->mac_changes, index);
3953  if (mc->node_index == node_index &&
3954  mc->type_opaque == type_opaque && mc->pid == pid)
3955  {
3956  /* Clients may need to clean up pool entries, too */
3957  if (fp)
3958  (*fp) (mc->data, 0 /* no new mac addrs */ );
3959  if (index == p[0])
3960  {
3961  mhash_unset (&nm->mac_changes_by_address, address, 0);
3962  if (mc->next_index != ~0)
3963  mhash_set (&nm->mac_changes_by_address, address,
3964  mc->next_index, 0);
3965  pool_put (nm->mac_changes, mc);
3966  return 0;
3967  }
3968  else
3969  {
3970  ASSERT (mc_last);
3971  mc_last->next_index = mc->next_index;
3972  pool_put (nm->mac_changes, mc);
3973  return 0;
3974  }
3975  }
3976  mc_last = mc;
3977  index = mc->next_index;
3978  }
3979 
3980  return VNET_API_ERROR_NO_SUCH_ENTRY;
3981  }
3982 }
3983 
3984 int
3985 vnet_ip6_nd_term (vlib_main_t * vm,
3986  vlib_node_runtime_t * node,
3987  vlib_buffer_t * p0,
3988  ethernet_header_t * eth,
3989  ip6_header_t * ip, u32 sw_if_index, u16 bd_index)
3990 {
3991  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3992  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3993  pending_resolution_t *mc;
3994 
3995  ndh = ip6_next_header (ip);
3996  if (ndh->icmp.type != ICMP6_neighbor_solicitation &&
3997  ndh->icmp.type != ICMP6_neighbor_advertisement)
3998  return 0;
3999 
4000  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
4001  (p0->flags & VLIB_BUFFER_IS_TRACED)))
4002  {
4003  u8 *t0 = vlib_add_trace (vm, node, p0,
4004  sizeof (icmp6_input_trace_t));
4005  clib_memcpy (t0, ip, sizeof (icmp6_input_trace_t));
4006  }
4007 
4008  /* Check if anyone want ND events for L2 BDs */
4009  uword *p = mhash_get (&nm->mac_changes_by_address, &ip6a_zero);
4010  if (p && !ip6_address_is_link_local_unicast (&ip->src_address))
4011  {
4012  u32 next_index = p[0];
4013  while (next_index != (u32) ~ 0)
4014  {
4015  int (*fp) (u32, u8 *, u32, ip6_address_t *);
4016  int rv = 1;
4017  mc = pool_elt_at_index (nm->mac_changes, next_index);
4018  fp = mc->data_callback;
4019  /* Call the callback, return 1 to suppress dup events */
4020  if (fp)
4021  rv = (*fp) (mc->data,
4022  eth->src_address, sw_if_index, &ip->src_address);
4023  /* Signal the resolver process */
4024  if (rv == 0)
4025  vlib_process_signal_event (vm, mc->node_index,
4026  mc->type_opaque, mc->data);
4027  next_index = mc->next_index;
4028  }
4029  }
4030 
4031  /* Check if MAC entry exsist for solicited target IP */
4032  if (ndh->icmp.type == ICMP6_neighbor_solicitation)
4033  {
4034  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
4035  l2_bridge_domain_t *bd_config;
4036  u8 *macp;
4037 
4038  opt = (void *) (ndh + 1);
4039  if ((opt->header.type !=
4040  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address) ||
4041  (opt->header.n_data_u64s != 1))
4042  return 0; /* source link layer address option not present */
4043 
4044  bd_config = vec_elt_at_index (l2input_main.bd_configs, bd_index);
4045  macp =
4046  (u8 *) hash_get_mem (bd_config->mac_by_ip6, &ndh->target_address);
4047  if (macp)
4048  { /* found ip-mac entry, generate eighbor advertisement response */
4049  int bogus_length;
4050  vlib_node_runtime_t *error_node =
4051  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
4052  ip->dst_address = ip->src_address;
4053  ip->src_address = ndh->target_address;
4054  ip->hop_limit = 255;
4055  opt->header.type =
4056  ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
4057  clib_memcpy (opt->ethernet_address, macp, 6);
4058  ndh->icmp.type = ICMP6_neighbor_advertisement;
4059  ndh->advertisement_flags = clib_host_to_net_u32
4060  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
4061  ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
4062  ndh->icmp.checksum = 0;
4063  ndh->icmp.checksum =
4064  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip, &bogus_length);
4065  clib_memcpy (eth->dst_address, eth->src_address, 6);
4066  clib_memcpy (eth->src_address, macp, 6);
4067  vlib_error_count (vm, error_node->node_index,
4068  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_TX, 1);
4069  return 1;
4070  }
4071  }
4072 
4073  return 0;
4074 
4075 }
4076 
4077 int
4078 ip6_neighbor_proxy_add_del (u32 sw_if_index, ip6_address_t * addr, u8 is_del)
4079 {
4080  u32 fib_index;
4081 
4082  fib_prefix_t pfx = {
4083  .fp_len = 128,
4084  .fp_proto = FIB_PROTOCOL_IP6,
4085  .fp_addr = {
4086  .ip6 = *addr,
4087  },
4088  };
4089  ip46_address_t nh = {
4090  .ip6 = *addr,
4091  };
4092 
4093  fib_index = ip6_fib_table_get_index_for_sw_if_index (sw_if_index);
4094 
4095  if (~0 == fib_index)
4096  return VNET_API_ERROR_NO_SUCH_FIB;
4097 
4098  if (is_del)
4099  {
4100  fib_table_entry_path_remove (fib_index,
4101  &pfx,
4102  FIB_SOURCE_IP6_ND_PROXY,
4103  FIB_PROTOCOL_IP6,
4104  &nh,
4105  sw_if_index,
4106  ~0, 1, FIB_ROUTE_PATH_FLAG_NONE);
4107  /* flush the ND cache of this address if it's there */
4108  vnet_unset_ip6_ethernet_neighbor (vlib_get_main (),
4109  sw_if_index, addr, NULL, 0);
4110  }
4111  else
4112  {
4113  fib_table_entry_path_add (fib_index,
4114  &pfx,
4115  FIB_SOURCE_IP6_ND_PROXY,
4116  FIB_ENTRY_FLAG_NONE,
4117  FIB_PROTOCOL_IP6,
4118  &nh,
4119  sw_if_index,
4120  ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
4121  }
4122  return (0);
4123 }
4124 
4125 static clib_error_t *
4126 set_ip6_nd_proxy_cmd (vlib_main_t * vm,
4127  unformat_input_t * input, vlib_cli_command_t * cmd)
4128 {
4129  vnet_main_t *vnm = vnet_get_main ();
4130  clib_error_t *error = 0;
4131  ip6_address_t addr;
4132  u32 sw_if_index;
4133  u8 is_del = 0;
4134 
4135  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4136  {
4137  /* get the rest of the command */
4138  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
4139  {
4140  if (unformat (input, "%U", unformat_ip6_address, &addr))
4141  break;
4142  else if (unformat (input, "delete") || unformat (input, "del"))
4143  is_del = 1;
4144  else
4145  return (unformat_parse_error (input));
4146  }
4147  }
4148 
4149  ip6_neighbor_proxy_add_del (sw_if_index, &addr, is_del);
4150 
4151  return error;
4152 }
4153 
4154 /* *INDENT-OFF* */
4155 VLIB_CLI_COMMAND (set_ip6_nd_proxy_command, static) =
4156 {
4157  .path = "set ip6 nd proxy",
4158  .short_help = "set ip6 nd proxy <HOST> <INTERFACE>",
4159  .function = set_ip6_nd_proxy_cmd,
4160 };
4161 /* *INDENT-ON* */
4162 
4163 void
4164 ethernet_ndp_change_mac (u32 sw_if_index)
4165 {
4166  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4167  ip6_neighbor_t *n;
4168 
4169  /* *INDENT-OFF* */
4170  pool_foreach (n, nm->neighbor_pool,
4171  ({
4172  if (n->key.sw_if_index == sw_if_index)
4173  {
4174  adj_nbr_walk_nh6 (sw_if_index,
4175  &n->key.ip6_address,
4176  ip6_nd_mk_complete_walk, n);
4177  }
4178  }));
4179  /* *INDENT-ON* */
4180 }
4181 
4182 /*
4183  * fd.io coding-style-patch-verification: ON
4184  *
4185  * Local Variables:
4186  * eval: (c-set-style "gnu")
4187  * End:
4188  */
ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
#define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
IP_LOOKUP_NEXT_LOAD_BALANCE
This packets follow a load-balance.
Definition: lookup.h:86
fib_table_entry_update_one_path
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, fib_protocol_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, 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:716
ip6_neighbor_main_t::if_radv_pool
ip6_radv_t * if_radv_pool
Definition: ip6_neighbor.c:192
MIN_DELAY_BETWEEN_RAS
#define MIN_DELAY_BETWEEN_RAS
Definition: ip6_neighbor.c:131
vnet_rewrite_one_header
#define vnet_rewrite_one_header(rw0, p0, most_likely_size)
Definition: rewrite.h:283
DEF_DEF_RTR_LIFETIME
#define DEF_DEF_RTR_LIFETIME
Definition: ip6_neighbor.c:126
ip_interface_address_t
Definition: lookup.h:294
vlib_get_frame_to_node
vlib_frame_t * vlib_get_frame_to_node(vlib_main_t *vm, u32 to_node_index)
Definition: main.c:187
ip6_nd_mk_incomplete
static void ip6_nd_mk_incomplete(adj_index_t ai)
Definition: ip6_neighbor.c:432
hi
vmrglw vmrglh hi
Definition: vector_altivec.h:119
pool_next_index
#define pool_next_index(P, I)
Return next occupied pool index after i, useful for safe iteration.
Definition: pool.h:405
mhash_t
Definition: mhash.h:46
md5_finish
void md5_finish(md5_context_t *c, u8 *digest)
Definition: md5.c:290
VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST
#define VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST
Definition: rewrite.h:315
icmp6_router_solicitation_or_advertisement_next_t
icmp6_router_solicitation_or_advertisement_next_t
Definition: ip6_neighbor.c:1239
md5_context_t
Definition: md5.h:29
ip6_radv_t::n_solicitations_rcvd
u32 n_solicitations_rcvd
Definition: ip6_neighbor.c:152
unset_random_neighbor_entry
static void unset_random_neighbor_entry(void)
Definition: ip6_neighbor.c:289
ip6_neighbor_syslog
static void ip6_neighbor_syslog(vlib_main_t *vm, int priority, char *fmt,...)
Definition: ip6_neighbor.c:1209
i
sll srl srl sll sra u16x4 i
Definition: vector_sse2.h:343
ip6_radv_t::ref_count
int ref_count
Definition: ip6_neighbor.c:119
pending_resolution_t
Definition: arp.c:59
ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP
#define ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP
vlib_buffer_reset
static void vlib_buffer_reset(vlib_buffer_t *b)
Reset current header & length to state they were in when packet was received.
Definition: buffer.h:215
ip6_icmp_neighbor_solicitation_node
static vlib_node_registration_t ip6_icmp_neighbor_solicitation_node
(constructor) VLIB_REGISTER_NODE (ip6_icmp_neighbor_solicitation_node)
Definition: ip6_neighbor.c:2574
vlib_process_wait_for_event_or_clock
static f64 vlib_process_wait_for_event_or_clock(vlib_main_t *vm, f64 dt)
Suspend a cooperative multi-tasking thread Waits for an event, or for the indicated number of seconds...
Definition: node_funcs.h:683
a
a
Definition: bitmap.h:516
ip6_neighbor_ra_prefix
int ip6_neighbor_ra_prefix(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *prefix_addr, u8 prefix_len, u8 use_default, u32 val_lifetime, u32 pref_lifetime, u8 no_advertise, u8 off_link, u8 no_autoconfig, u8 no_onlink, u8 is_no)
Definition: ip6_neighbor.c:2712
ADJ_NBR_REWRITE_FLAG_INCOMPLETE
An indication that the rewrite is incomplete, i.e.
Definition: adj_nbr.h:90
ip6_nbr_probe
static void ip6_nbr_probe(ip_adjacency_t *adj)
Definition: ip6_neighbor.c:354
ip6_neighbor_init
static clib_error_t * ip6_neighbor_init(vlib_main_t *vm)
Definition: ip6_neighbor.c:3819
ip6_radv_t::last_radv_time
f64 last_radv_time
Definition: ip6_neighbor.c:141
ip_lookup_main_t::if_address_pool
ip_interface_address_t * if_address_pool
Pool of addresses that are assigned to interfaces.
Definition: lookup.h:337
ADJ_NBR_REWRITE_FLAG_COMPLETE
An indication that the rewrite is complete, i.e.
Definition: adj_nbr.h:98
vnet_get_main
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
ADJ_WALK_RC_CONTINUE
Definition: adj_types.h:44
vnet_get_sup_hw_interface
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
Definition: interface_funcs.h:82
log_level_strings
static char * log_level_strings[]
Definition: ip6_neighbor.c:1200
ip6_multicast_address_scope_t
ip6_multicast_address_scope_t
Definition: ip6_packet.h:130
ip_adjacency_t_::nbr
struct ip_adjacency_t_::@138::@139 nbr
IP_LOOKUP_NEXT_ARP/IP_LOOKUP_NEXT_REWRITE.
ip6_neighbor_set_unset_rpc_args_t
Definition: ip6_neighbor.c:319
ip6_nd_mk_complete
static void ip6_nd_mk_complete(adj_index_t ai, ip6_neighbor_t *nbr)
Definition: ip6_neighbor.c:422
ip6_neighbor_main_t::neighbor_index_by_key
mhash_t neighbor_index_by_key
Definition: ip6_neighbor.c:188
vlib_buffer_t::free_list_index
u32 free_list_index
Buffer free list that this buffer was allocated from and will be freed to.
Definition: buffer.h:99
PREDICT_TRUE
#define PREDICT_TRUE(x)
Definition: clib.h:98
ip6_neighbor_del_mld_prefix
static void ip6_neighbor_del_mld_prefix(ip6_radv_t *radv_info, ip6_address_t *addr)
Delete a multicast Address from the advertised MLD set.
Definition: ip6_neighbor.c:2018
ip6_address_t::as_u8
u8 as_u8[16]
Definition: ip6_packet.h:48
ip6_address_t::as_u64
u64 as_u64[2]
Definition: ip6_packet.h:51
ip6_radv_prefix_t::adv_autonomous_flag
int adv_autonomous_flag
Definition: ip6_neighbor.c:47
set_ip6_nd_proxy_cmd
static clib_error_t * set_ip6_nd_proxy_cmd(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:4126
ip6_radv_t::send_unicast
int send_unicast
Definition: ip6_neighbor.c:112
ip6_radv_prefix_t::prefix
ip6_address_t prefix
Definition: ip6_neighbor.c:44
vlib_error_count
static void vlib_error_count(vlib_main_t *vm, uword node_index, uword counter, uword increment)
Definition: error_funcs.h:57
ip6_radv_t::randomizer
u64 randomizer
Definition: ip6_neighbor.c:118
ip6_interface_address_matching_destination
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:284
ip6_address_is_local_unicast
static uword ip6_address_is_local_unicast(ip6_address_t *a)
Definition: ip6_packet.h:303
ip6_radv_t::last_multicast_time
f64 last_multicast_time
Definition: ip6_neighbor.c:142
md5_init
void md5_init(md5_context_t *c)
Definition: md5.c:211
adj_get_link_type
vnet_link_t adj_get_link_type(adj_index_t ai)
Return the link type of the adjacency.
Definition: adj.c:340
NULL
#define NULL
Definition: clib.h:55
mhash_unset
uword mhash_unset(mhash_t *h, void *key, uword *old_value)
Definition: mhash.c:353
vlib_node_t::index
u32 index
Definition: node.h:237
vlib_time_now
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:185
ip6_radv_t::adv_prefixes_pool
ip6_radv_prefix_t * adv_prefixes_pool
Definition: ip6_neighbor.c:97
ip_adjacency_t_
IP unicast adjacency.
Definition: lookup.h:193
ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW
Definition: ip6_neighbor.c:1242
ip6_mldp_group_t
Definition: ip6_neighbor.c:68
ethernet_buffer_header_size
#define ethernet_buffer_header_size(b)
Determine the size of the Ethernet headers of the current frame in the buffer.
Definition: ethernet.h:390
vlib_put_next_frame
void vlib_put_next_frame(vlib_main_t *vm, vlib_node_runtime_t *r, u32 next_index, u32 n_vectors_left)
Release pointer to next frame vector data.
Definition: main.c:459
ethernet_header_t::src_address
u8 src_address[6]
Definition: packet.h:54
ip6_address_is_global_unicast
static uword ip6_address_is_global_unicast(ip6_address_t *a)
Definition: ip6_packet.h:310
ip6_neighbors_entries
ip6_neighbor_t * ip6_neighbors_entries(u32 sw_if_index)
Definition: ip6_neighbor.c:783
ip6_neighbor_main_t::pending_resolutions
pending_resolution_t * pending_resolutions
Definition: ip6_neighbor.c:178
set_ip6_neighbor_command
static vlib_cli_command_t set_ip6_neighbor_command
(constructor) VLIB_CLI_COMMAND (set_ip6_neighbor_command)
Definition: ip6_neighbor.c:915
ip_interface_address_t::address_length
u16 address_length
Definition: lookup.h:306
ip6_mldp_group_t::num_sources
u16 num_sources
Definition: ip6_neighbor.c:73
ETHER_MAC_ADDR_LEN
#define ETHER_MAC_ADDR_LEN
Definition: ip6_neighbor.c:38
vec_add1
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:522
vnet_sw_interface_compare
word vnet_sw_interface_compare(vnet_main_t *vnm, uword sw_if_index0, uword sw_if_index1)
Definition: interface.c:1102
clib_cpu_time_now
static u64 clib_cpu_time_now(void)
Definition: time.h:73
IP6_NBR_MK_KEY
#define IP6_NBR_MK_KEY(k, sw_if_index, addr)
Definition: ip6_neighbor.c:445
logmask
static int logmask
Definition: ip6_neighbor.c:1206
vlib_node_registration_t
struct _vlib_node_registration vlib_node_registration_t
ip6_header_t::hop_limit
u8 hop_limit
Definition: ip6_packet.h:338
fib_table_entry_path_remove
void fib_table_entry_path_remove(u32 fib_index, const fib_prefix_t *prefix, fib_source_t source, fib_protocol_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:625
ip6_neighbor_proxy_add_del
int ip6_neighbor_proxy_add_del(u32 sw_if_index, ip6_address_t *addr, u8 is_del)
Definition: ip6_neighbor.c:4078
unformat_user
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:982
STRUCT_OFFSET_OF
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:62
ip6_radv_prefix_t::adv_pref_lifetime_in_secs
u32 adv_pref_lifetime_in_secs
Definition: ip6_neighbor.c:49
DEF_ADV_PREF_LIFETIME
#define DEF_ADV_PREF_LIFETIME
Definition: ip6_neighbor.c:62
vnet_get_sw_interface
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
Definition: interface_funcs.h:50
vnet_sw_interface_t
Definition: interface.h:529
format
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:418
va_format
u8 * va_format(u8 *s, const char *fmt, va_list *va)
Definition: format.c:386
ip_adjacency_t_::sub_type
union ip_adjacency_t_::@138 sub_type
format_vlib_cpu_time
format_function_t format_vlib_cpu_time
Definition: node_funcs.h:1106
unformat_vnet_sw_interface
unformat_function_t unformat_vnet_sw_interface
Definition: interface_funcs.h:287
ip6_fib.h
random_u64
static u64 random_u64(u64 *seed)
64-bit random number generator Again, constants courtesy of Donald Knuth.
Definition: random.h:126
ip6_radv_t::cease_radv
int cease_radv
Definition: ip6_neighbor.c:111
vnet_add_del_ip6_nd_change_event
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)
Definition: ip6_neighbor.c:3903
ip6_radv_t::adv_neighbor_reachable_time_in_msec
u32 adv_neighbor_reachable_time_in_msec
Definition: ip6_neighbor.c:86
ip6_radv_t
Definition: ip6_neighbor.c:78
vlib_node_runtime_t::errors
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:418
pool_get
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:200
ip6_neighbor_set_unset_rpc_args_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.c:325
IP_LOOKUP_NEXT_MCAST
Multicast Adjacency.
Definition: lookup.h:95
ip6_header_t::src_address
ip6_address_t src_address
Definition: ip6_packet.h:341
ip6_radv_t::send_radv
int send_radv
Definition: ip6_neighbor.c:110
format_vnet_sw_if_index_name
format_function_t format_vnet_sw_if_index_name
Definition: interface_funcs.h:283
vlib_frame_t
Definition: node.h:332
pending_resolution_t::data_callback
void * data_callback
Definition: arp.c:66
disable_ip6_interface
clib_error_t * disable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:3293
IP_LOOKUP_NEXT_DROP
Adjacency to drop this packet.
Definition: lookup.h:63
ip_adjacency_t_::ia_link
vnet_link_t ia_link
Definition: lookup.h:214
ip6_neighbor_process_timer_event
static uword ip6_neighbor_process_timer_event(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ip6_neighbor.c:2358
ip6_main_t::discover_neighbor_packet_template
vlib_packet_template_t discover_neighbor_packet_template
Definition: ip6.h:187
ip6_neighbor_t::flags
ip6_neighbor_flags_t flags
Definition: ip6_neighbor.h:42
adj_mcast_update_rewrite
void adj_mcast_update_rewrite(adj_index_t adj_index, u8 *rewrite)
adj_mcast_update_rewrite
Definition: adj_mcast.c:102
vlib_node_runtime_t
Definition: node.h:412
ethernet_main
ethernet_main_t ethernet_main
Definition: ethernet.h:273
ip6_fib_table_lookup_exact_match
fib_node_index_t ip6_fib_table_lookup_exact_match(u32 fib_index, const ip6_address_t *addr, u32 len)
Definition: ip6_fib.c:239
ip6_print_addrs
static void ip6_print_addrs(vlib_main_t *vm, u32 *addrs)
Definition: ip6_neighbor.c:3081
adj_get
static ip_adjacency_t * adj_get(adj_index_t adj_index)
Get a pointer to an adjacency object from its index.
Definition: adj.h:128
ICMP6_ROUTER_SOLICITATION_NEXT_DROP
Definition: ip6_neighbor.c:1241
vnet_hw_interface_t::hw_address
u8 * hw_address
Definition: interface.h:410
static_always_inline
#define static_always_inline
Definition: clib.h:85
format_ethernet_address
u8 * format_ethernet_address(u8 *s, va_list *args)
Definition: format.c:44
vlib_packet_template_get_packet
void * vlib_packet_template_get_packet(vlib_main_t *vm, vlib_packet_template_t *t, u32 *bi_result)
Definition: buffer.c:818
pool_foreach
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:376
VLIB_INIT_FUNCTION
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
vnet_main_t::local_interface_sw_if_index
u32 local_interface_sw_if_index
Definition: vnet.h:55
VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION
VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(ip6_neighbor_sw_interface_up_down)
IP_LOOKUP_NEXT_ICMP_ERROR
This packets needs to go to ICMP error.
Definition: lookup.h:92
ip6_radv_t::link_layer_addr_len
u8 link_layer_addr_len
Definition: ip6_neighbor.c:94
ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE
#define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE
ethernet_header_t::dst_address
u8 dst_address[6]
Definition: packet.h:53
ip6_neighbor_set_unset_rpc_args_t::is_add
u8 is_add
Definition: ip6_neighbor.c:321
adj_walk_rc_t
enum adj_walk_rc_t_ adj_walk_rc_t
return codes from a adjacency walker callback function
disable_ip6_interface_cmd
static clib_error_t * disable_ip6_interface_cmd(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:3474
format_ip6_neighbor_ip6_entry
static u8 * format_ip6_neighbor_ip6_entry(u8 *s, va_list *va)
Definition: ip6_neighbor.c:220
ip6_icmp_neighbor_discovery_event_process
static uword ip6_icmp_neighbor_discovery_event_process(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ip6_neighbor.c:2487
show_ip6_neighbors
static clib_error_t * show_ip6_neighbors(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:803
vnet_set_ip6_ethernet_neighbor
int vnet_set_ip6_ethernet_neighbor(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *a, u8 *link_layer_address, uword n_bytes_link_layer_address, int is_static, int is_no_fib_entry)
Definition: ip6_neighbor.c:569
DEF_ADV_VALID_LIFETIME
#define DEF_ADV_VALID_LIFETIME
Definition: ip6_neighbor.c:61
ip6_radv_t::address_to_mldp_index
mhash_t address_to_mldp_index
Definition: ip6_neighbor.c:106
vec_elt_at_index
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
Definition: vec_bootstrap.h:174
vnet_get_sup_sw_interface
static vnet_sw_interface_t * vnet_get_sup_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
Definition: interface_funcs.h:73
fib_prefix_t_
Aggregrate type for a prefix.
Definition: fib_types.h:160
IP_LOOKUP_NEXT_PUNT
Adjacency to punt this packet.
Definition: lookup.h:65
clib_error_return
#define clib_error_return(e, args...)
Definition: error.h:111
ip6_src_lookup_for_packet
static u32 ip6_src_lookup_for_packet(ip6_main_t *im, vlib_buffer_t *b, ip6_header_t *i)
return the DPO that the LB stacks on.
Definition: ip6_fib.h:73
vl_api_rpc_call_main_thread
void vl_api_rpc_call_main_thread(void *fp, u8 *data, u32 data_length)
Definition: memory_vlib.c:1327
ICMP6_ROUTER_SOLICITATION_N_NEXT
Definition: ip6_neighbor.c:1244
u64
unsigned long u64
Definition: types.h:89
adj_unlock
void adj_unlock(adj_index_t adj_index)
Release a reference counting lock on the adjacency.
Definition: adj.c:215
set_ip6_link_local_address
clib_error_t * set_ip6_link_local_address(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *address)
Definition: ip6_neighbor.c:3637
ip6_radv_t::max_radv_interval
f64 max_radv_interval
Definition: ip6_neighbor.c:135
IP_LOOKUP_NEXT_LOCAL
This packet is for one of our own IP addresses.
Definition: lookup.h:68
ip6_icmp_neighbor_discovery_event_data_t::fib_index
u32 fib_index
Definition: ip6_neighbor.c:212
set_ip6_neighbor
static clib_error_t * set_ip6_neighbor(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:858
ip6_neighbor_main_t::neighbor_input_next_index_by_hw_if_index
u32 * neighbor_input_next_index_by_hw_if_index
Definition: ip6_neighbor.c:184
vnet_ip6_nd_term
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)
Definition: ip6_neighbor.c:3985
fib_prefix_t_::fp_len
u16 fp_len
The mask length.
Definition: fib_types.h:164
ethernet_ip6_mcast_dst_addr
const u8 * ethernet_ip6_mcast_dst_addr(void)
Definition: interface.c:65
IP_LOOKUP_NEXT_GLEAN
This packet matches an "interface route" and packets need to be passed to ARP to find rewrite string ...
Definition: lookup.h:78
ip6_fib_table_get_index_for_sw_if_index
u32 ip6_fib_table_get_index_for_sw_if_index(u32 sw_if_index)
Definition: ip6_fib.c:392
ip6_neighbor_main_t::opcode_by_name
uword * opcode_by_name
Definition: ip6_neighbor.c:174
MAX_DELAY_BETWEEN_RAS
#define MAX_DELAY_BETWEEN_RAS
Definition: ip6_neighbor.c:132
FIB_ENTRY_FLAG_NONE
Definition: fib_entry.h:227
unformat_line_input
unformat_function_t unformat_line_input
Definition: format.h:281
fib_table_entry_path_add
fib_node_index_t fib_table_entry_path_add(u32 fib_index, const fib_prefix_t *prefix, fib_source_t source, fib_entry_flag_t flags, fib_protocol_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, mpls_label_t *next_hop_labels, fib_route_path_flags_t path_flags)
Add one path to an entry (aka route) in the FIB.
Definition: fib_table.c:477
ip6_radv_t::max_delay_between_radv
f64 max_delay_between_radv
Definition: ip6_neighbor.c:138
ip6_radv_t::adv_time_in_msec_between_retransmitted_neighbor_solicitations
u32 adv_time_in_msec_between_retransmitted_neighbor_solicitations
Definition: ip6_neighbor.c:87
pool_flush
#define pool_flush(VAR, POOL, BODY)
Remove all elemenets from a pool in a safe way.
Definition: pool.h:433
vnet_main_t::api_errno
vnet_api_error_t api_errno
Definition: vnet.h:77
FIB_ENTRY_FLAG_LOCAL
Definition: fib_entry.h:232
ip6_radv_prefix_t::pref_lifetime_expires
f64 pref_lifetime_expires
Definition: ip6_neighbor.c:53
format_vnet_sw_interface_name
format_function_t format_vnet_sw_interface_name
Definition: interface_funcs.h:281
ip6_neighbor_key_t
Definition: ip6_neighbor.h:24
ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX
Definition: ip6_neighbor.c:1243
ip6_header_t::protocol
u8 protocol
Definition: ip6_packet.h:335
ADJ_INDEX_INVALID
#define ADJ_INDEX_INVALID
Invalid ADJ index - used when no adj is known likewise blazoned capitals INVALID speak volumes where ...
Definition: adj_types.h:36
pool_elt_at_index
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:397
vnet_main_t::vlib_main
vlib_main_t * vlib_main
Definition: vnet.h:79
ip6_radv_t::min_radv_interval
f64 min_radv_interval
Definition: ip6_neighbor.c:136
vnet_register_ip6_neighbor_resolution_event
void vnet_register_ip6_neighbor_resolution_event(vnet_main_t *vnm, void *address_arg, uword node_index, uword type_opaque, uword data)
Definition: ip6_neighbor.c:3873
vlib_buffer_t::current_length
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:71
vlib_process_signal_event
static void vlib_process_signal_event(vlib_main_t *vm, uword node_index, uword type_opaque, uword data)
Definition: node_funcs.h:930
FIB_SOURCE_ADJ
Adjacency source.
Definition: fib_entry.h:92
fib_prefix_t_::fp_addr
ip46_address_t fp_addr
The address type is not deriveable from the fp_addr member.
Definition: fib_types.h:183
pending_resolution_t::type_opaque
uword type_opaque
Definition: arp.c:63
ip6_neighbor_add_mld_grp
static void ip6_neighbor_add_mld_grp(ip6_radv_t *a, ip6_multicast_address_scope_t scope, ip6_multicast_link_local_group_id_t group)
Add a multicast Address to the advertised MLD set.
Definition: ip6_neighbor.c:2039
ethernet_interface::address
u8 address[6]
Definition: ethernet.h:128
vnet_unset_ip6_ethernet_neighbor
int vnet_unset_ip6_ethernet_neighbor(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *a, u8 *link_layer_address, uword n_bytes_link_layer_address)
Definition: ip6_neighbor.c:713
set_unset_ip6_neighbor_rpc
static void set_unset_ip6_neighbor_rpc(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *a, u8 *link_layer_address, int is_add, int is_static, int is_no_fib_entry)
Definition: ip6_neighbor.c:333
ip6_radv_t::all_routers_mcast
int all_routers_mcast
Definition: ip6_neighbor.c:116
unformat_input_t
struct _unformat_input_t unformat_input_t
enable_ip6_interface_cmd
static clib_error_t * enable_ip6_interface_cmd(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:3435
os_get_cpu_number
uword os_get_cpu_number(void)
Definition: unix-misc.c:224
DEF_MAX_RADV_INTERVAL
#define DEF_MAX_RADV_INTERVAL
Definition: ip6_neighbor.c:123
IP6_MLDP_ALERT_TYPE
#define IP6_MLDP_ALERT_TYPE
ip6_radv_t::link_layer_address
u8 link_layer_address[8]
Definition: ip6_neighbor.c:93
ip6_radv_t::next_multicast_time
f64 next_multicast_time
Definition: ip6_neighbor.c:143
vlib_buffer_get_current
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:188
VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX
#define VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX
Definition: buffer.h:390
ip6_neighbor_main_t::limit_neighbor_cache_size
u32 limit_neighbor_cache_size
Definition: ip6_neighbor.c:195
pool_put
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:241
foreach_log_level
#define foreach_log_level
Definition: ip6_neighbor.c:1183
icmp6_neighbor_discovery_option_type_t
enum icmp6_neighbor_discovery_option_type icmp6_neighbor_discovery_option_type_t
ELOG_DATA
#define ELOG_DATA(em, f)
Definition: elog.h:392
ip6_address_compare
int ip6_address_compare(ip6_address_t *a1, ip6_address_t *a2)
Definition: ip46_cli.c:58
PREDICT_FALSE
#define PREDICT_FALSE(x)
Definition: clib.h:97
vnet_main
vnet_main_t vnet_main
Definition: misc.c:43
VLIB_FRAME_SIZE
#define VLIB_FRAME_SIZE
Definition: node.h:328
ip6_radv_t::adv_other_flag
int adv_other_flag
Definition: ip6_neighbor.c:84
vlib_node_runtime_t::node_index
u32 node_index
Node index.
Definition: node.h:436
ip6_radv_t::address_to_prefix_index
mhash_t address_to_prefix_index
Definition: ip6_neighbor.c:100
vlib_validate_buffer_enqueue_x1
#define vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, bi0, next0)
Finish enqueueing one buffer forward in the graph.
Definition: buffer_node.h:216
mhash_set
static uword mhash_set(mhash_t *h, void *key, uword new_value, uword *old_value)
Definition: mhash.h:117
vlib_get_next_frame
#define vlib_get_next_frame(vm, node, next_index, vectors, n_vectors_left)
Get pointer to next frame vector data by (vlib_node_runtime_t, next_index).
Definition: node_funcs.h:350
ip6_main_t::add_del_interface_address_callbacks
ip6_add_del_interface_address_callback_t * add_del_interface_address_callbacks
Definition: ip6.h:184
ip6_neighbor.h
vlib_buffer_t::error
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:113
IP6_NEIGHBOR_FLAG_DYNAMIC
Definition: ip6_neighbor.h:34
ip6_link_local_address_from_ethernet_mac_address
void ip6_link_local_address_from_ethernet_mac_address(ip6_address_t *ip, u8 *mac)
Definition: ip6_forward.c:3035
ip6_neighbor_add_mld_prefix
static void ip6_neighbor_add_mld_prefix(ip6_radv_t *radv_info, ip6_address_t *addr)
Add a multicast Address to the advertised MLD set.
Definition: ip6_neighbor.c:1985
ip6_radv_t::failed_device_check
int failed_device_check
Definition: ip6_neighbor.c:115
FIB_ROUTE_PATH_FLAG_NONE
Definition: fib_types.h:272
ip6_icmp_input_node
vlib_node_registration_t ip6_icmp_input_node
(constructor) VLIB_REGISTER_NODE (ip6_icmp_input_node)
Definition: icmp6.c:240
unformat_ip6_address
unformat_function_t unformat_ip6_address
Definition: format.h:94
pool_free
#define pool_free(p)
Free a pool.
Definition: pool.h:290
ip6_radv_t::mldp_group_pool
ip6_mldp_group_t * mldp_group_pool
Definition: ip6_neighbor.c:103
icmp6_neighbor_solicitation_or_advertisement
static_always_inline uword icmp6_neighbor_solicitation_or_advertisement(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, uword is_solicitation)
Definition: ip6_neighbor.c:931
enable_ip6_interface
clib_error_t * enable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:3346
ip6_mfib_interface_enable_disable
void ip6_mfib_interface_enable_disable(u32 sw_if_index, int is_enable)
Add/remove the interface from the accepting list of the special MFIB entries.
Definition: ip6_mfib.c:258
icmp6_neighbor_solicitation_or_advertisement_next_t
icmp6_neighbor_solicitation_or_advertisement_next_t
Definition: ip6_neighbor.c:923
ip6_radv_t::adv_managed_flag
int adv_managed_flag
Definition: ip6_neighbor.c:83
ip6_main_t
Definition: ip6.h:144
icmp6_neighbor_advertisement
static uword icmp6_neighbor_advertisement(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ip6_neighbor.c:2564
fib_entry_is_sourced
int fib_entry_is_sourced(fib_node_index_t fib_entry_index, fib_source_t source)
Definition: fib_entry_src.c:104
ip6_radv_t::n_solicitations_dropped
u32 n_solicitations_dropped
Definition: ip6_neighbor.c:153
vlib_buffer_add_data
u32 vlib_buffer_add_data(vlib_main_t *vm, u32 free_list_index, u32 buffer_index, void *data, u32 n_data_bytes)
Definition: buffer.c:856
FIB_PROTOCOL_IP6
Definition: fib_types.h:36
UNFORMAT_END_OF_INPUT
#define UNFORMAT_END_OF_INPUT
Definition: format.h:143
mhash_init
void mhash_init(mhash_t *h, uword n_value_bytes, uword n_key_bytes)
Definition: mhash.c:168
VNET_BUFFER_LOCALLY_ORIGINATED
#define VNET_BUFFER_LOCALLY_ORIGINATED
Definition: buffer.h:68
vlib_frame_t::n_vectors
u16 n_vectors
Definition: node.h:344
format_ip6_address
format_function_t format_ip6_address
Definition: format.h:95
ip6a_zero
static ip6_address_t ip6a_zero
Definition: ip6_neighbor.c:217
vm
vlib_main_t * vm
Definition: buffer.c:276
h
vec_header_t h
Definition: buffer.c:275
fib_table_entry_delete_index
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:821
vnet_hw_interface_t
Definition: interface.h:372
ip6_mldp_group_t::mcast_address
ip6_address_t mcast_address
Definition: ip6_neighbor.c:72
ip6_mfib.h
log_level_t
log_level_t
Definition: ip6_neighbor.c:1193
vec_free
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:340
ip6_radv_t::curr_hop_limit
u8 curr_hop_limit
Definition: ip6_neighbor.c:82
ICMP6_NEIGHBOR_SOLICITATION_N_NEXT
Definition: ip6_neighbor.c:927
ICMP6_ND_EVENT_INIT
Definition: ip6_neighbor.c:203
clib_warning
#define clib_warning(format, args...)
Definition: error.h:59
VLIB_BUFFER_IS_TRACED
#define VLIB_BUFFER_IS_TRACED
Definition: buffer.h:85
ip6_mldp_group_t::mcast_source_address_pool
ip6_address_t * mcast_source_address_pool
Definition: ip6_neighbor.c:74
vlib_node_get_runtime
static vlib_node_runtime_t * vlib_node_get_runtime(vlib_main_t *vm, u32 node_index)
Get node runtime by node index.
Definition: node_funcs.h:88
vlib_buffer_t
Definition: buffer.h:61
clib_memcpy
#define clib_memcpy(a, b, c)
Definition: string.h:69
ip_lookup_main_t
Definition: lookup.h:328
ip6_icmp_neighbor_discovery_event_data_t::up_down_swindex
u32 up_down_swindex
Definition: ip6_neighbor.c:211
DEF_CURR_HOP_LIMIT
#define DEF_CURR_HOP_LIMIT
Definition: ip6_neighbor.c:125
vlib_buffer_alloc_from_free_list
static u32 vlib_buffer_alloc_from_free_list(vlib_main_t *vm, u32 *buffers, u32 n_buffers, u32 free_list_index)
Allocate buffers from specific freelist into supplied array.
Definition: buffer_funcs.h:269
vlib_main_t::elog_main
elog_main_t elog_main
Definition: main.h:141
ip6_radv_t::adv_link_layer_address
int adv_link_layer_address
Definition: ip6_neighbor.c:113
fib_node_index_t
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:28
pending_resolution_t::pid
u32 pid
Definition: arp.c:67
ethernet_header_t
Definition: packet.h:50
show_ip6_neighbors_command
static vlib_cli_command_t show_ip6_neighbors_command
(constructor) VLIB_CLI_COMMAND (show_ip6_neighbors_command)
Definition: ip6_neighbor.c:850
ip6_neighbor_t::fib_entry_index
fib_node_index_t fib_entry_index
Definition: ip6_neighbor.h:44
adj_index_t
u32 adj_index_t
An index for adjacencies.
Definition: adj_types.h:30
l2_bridge_domain_t::mac_by_ip6
uword * mac_by_ip6
Definition: l2_bd.h:84
ELOG_TYPE_DECLARE
#define ELOG_TYPE_DECLARE(f)
Definition: elog.h:350
vlib_get_node_by_name
vlib_node_t * vlib_get_node_by_name(vlib_main_t *vm, u8 *name)
Definition: node.c:45
IP_LOOKUP_NEXT_ARP
This packet matches an "incomplete adjacency" and packets need to be passed to ARP to find rewrite st...
Definition: lookup.h:73
md5_add
void md5_add(md5_context_t *c, void *data, int data_bytes)
Definition: md5.c:235
ip6_neighbor_t::cpu_time_last_updated
u64 cpu_time_last_updated
Definition: ip6_neighbor.h:43
ip6_next_header
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:345
ip6_neighbor_set_unset_rpc_args_t::is_no_fib_entry
u8 is_no_fib_entry
Definition: ip6_neighbor.c:323
fib_table.h
VLIB_CLI_COMMAND
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
ip6_radv_t::initial_adverts_count
u32 initial_adverts_count
Definition: ip6_neighbor.c:146
ip_lookup_main_t::if_address_pool_index_by_sw_if_index
u32 * if_address_pool_index_by_sw_if_index
Head of doubly linked list of interface addresses for each software interface.
Definition: lookup.h:344
vnet_main_t
Definition: vnet.h:52
ip6_tcp_udp_icmp_compute_checksum
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:1139
ip6_add_del_interface_address_callback_t::function
ip6_add_del_interface_address_function_t * function
Definition: ip6.h:105
ip6_radv_prefix_t::valid_lifetime_expires
f64 valid_lifetime_expires
Definition: ip6_neighbor.c:52
MAX_INITIAL_RTR_ADVERTISEMENTS
#define MAX_INITIAL_RTR_ADVERTISEMENTS
Definition: ip6_neighbor.c:130
vlib_node_runtime_t::cached_next_index
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:455
ip6_radv_t::link_local_address
ip6_address_t link_local_address
Definition: ip6_neighbor.c:156
VNET_SW_INTERFACE_FLAG_ADMIN_UP
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:536
vnet_hw_interface_t::max_l3_packet_bytes
u32 max_l3_packet_bytes[VLIB_N_RX_TX]
Definition: interface.h:451
unformat_ethernet_address
uword unformat_ethernet_address(unformat_input_t *input, va_list *args)
Definition: format.c:227
ASSERT
#define ASSERT(truth)
Definition: error_bootstrap.h:69
vnet_sw_interface_t::flags
u16 flags
Definition: interface.h:533
ip6_radv_prefix_t::enabled
int enabled
Definition: ip6_neighbor.c:56
u32
unsigned int u32
Definition: types.h:88
ip6_neighbor_main_t::neighbor_delete_rotor
u32 neighbor_delete_rotor
Definition: ip6_neighbor.c:196
l2_bridge_domain_t
Definition: l2_bd.h:55
ip6_radv_t::prefix_option
int prefix_option
Definition: ip6_neighbor.c:114
mhash_get
static uword * mhash_get(mhash_t *h, const void *key)
Definition: mhash.h:110
ip6_neighbor_key_t::ip6_address
ip6_address_t ip6_address
Definition: ip6_neighbor.h:26
ip6_neighbor_main_t
Definition: ip6_neighbor.c:171
ip6_main
ip6_main_t ip6_main
Definition: ip6_forward.c:2846
ip6_main_t::lookup_main
ip_lookup_main_t lookup_main
Definition: ip6.h:151
ip6_add_del_interface_address_callback_t::function_opaque
uword function_opaque
Definition: ip6.h:106
ip6_neighbor_key_t::pad
u32 pad
Definition: ip6_neighbor.h:28
ip6_radv_t::n_advertisements_sent
u32 n_advertisements_sent
Definition: ip6_neighbor.c:151
ip6_radv_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.c:109
mhash_free
static void mhash_free(mhash_t *h)
Definition: mhash.h:149
show_ip6_interface_cmd
static clib_error_t * show_ip6_interface_cmd(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:3098
ip6_neighbor_key_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.h:27
vlib_register_node
u32 vlib_register_node(vlib_main_t *vm, vlib_node_registration_t *r)
Definition: node.c:449
ip6_neighbor_set_unset_rpc_args_t::is_static
u8 is_static
Definition: ip6_neighbor.c:322
ip6_radv_prefix_t
Definition: ip6_neighbor.c:41
ip6_header_t
Definition: ip6_packet.h:325
IP_LOOKUP_NEXT_MIDCHAIN
This packets follow a mid-chain adjacency.
Definition: lookup.h:89
ip6_radv_t::min_delay_between_radv
f64 min_delay_between_radv
Definition: ip6_neighbor.c:137
ip6_radv_prefix_t::adv_on_link_flag
int adv_on_link_flag
Definition: ip6_neighbor.c:46
DEF_MIN_RADV_INTERVAL
#define DEF_MIN_RADV_INTERVAL
Definition: ip6_neighbor.c:124
ip6_neighbor_set_unset_rpc_args_t::link_layer_address
u8 link_layer_address[6]
Definition: ip6_neighbor.c:324
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static_always_inline uword icmp6_router_solicitation(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ip6_neighbor.c:1248
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static int ip6_neighbor_sort(void *a1, void *a2)
Definition: ip6_neighbor.c:770
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ip6_neighbor_main_t::if_radv_pool_index_by_sw_if_index
u32 * if_radv_pool_index_by_sw_if_index
Definition: ip6_neighbor.c:190
ip6_radv_t::adv_router_lifetime_in_sec
u16 adv_router_lifetime_in_sec
Definition: ip6_neighbor.c:85
vlib_buffer_advance
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:201
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u32 hw_if_index
Definition: interface.h:566
VLIB_NODE_FLAG_TRACE
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:259
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int deprecated_prefix_flag
Definition: ip6_neighbor.c:57
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ip6_multicast_link_local_group_id_t
Definition: ip6_packet.h:137
ethernet_interface
Definition: ethernet.h:109
ip6_add_del_interface_address_callback_t
Definition: ip6.h:103
FIB_SOURCE_INTERFACE
Route added as a result of interface configuration.
Definition: fib_entry.h:50
IP6_NEIGHBOR_FLAG_NO_FIB_ENTRY
Definition: ip6_neighbor.h:35
ip6_neighbor_main_t::pending_resolutions_by_address
mhash_t pending_resolutions_by_address
Definition: ip6_neighbor.c:177
icmp6_neighbor_solicitation
static uword icmp6_neighbor_solicitation(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ip6_neighbor.c:2555
ip6_nd_mk_incomplete_walk
static adj_walk_rc_t ip6_nd_mk_incomplete_walk(adj_index_t ai, void *ctx)
Definition: ip6_neighbor.c:482
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u32 next_index
Definition: arp.c:61
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static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:23
vnet_sw_interface_is_admin_up
static uword vnet_sw_interface_is_admin_up(vnet_main_t *vnm, u32 sw_if_index)
Definition: interface_funcs.h:179
uword
u64 uword
Definition: types.h:112
vlib_add_trace
static void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
Definition: trace_funcs.h:55
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Definition: error.h:75
unformat_parse_error
#define unformat_parse_error(input)
Definition: format.h:267
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u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:328
ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP
Definition: ip6_neighbor.c:925
ethernet_ndp_change_mac
void ethernet_ndp_change_mac(u32 sw_if_index)
Definition: ip6_neighbor.c:4164
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fib_entry_flag_t fib_entry_get_flags_for_source(fib_node_index_t fib_entry_index, fib_source_t source)
Definition: fib_entry_src.c:1390
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static vlib_node_registration_t ip6_icmp_router_solicitation_node
(constructor) VLIB_REGISTER_NODE (ip6_icmp_router_solicitation_node)
Definition: ip6_neighbor.c:2338
VLIB_TX
Definition: defs.h:47
vlib_trace_frame_buffers_only
void vlib_trace_frame_buffers_only(vlib_main_t *vm, vlib_node_runtime_t *node, u32 *buffers, uword n_buffers, uword next_buffer_stride, uword n_buffer_data_bytes_in_trace)
Definition: trace.c:45
set_ip6_link_local_address_cmd
clib_error_t * set_ip6_link_local_address_cmd(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:3692
ip6_neighbor_send_mldpv2_report
static void ip6_neighbor_send_mldpv2_report(u32 sw_if_index)
Definition: ip6_neighbor.c:2186
u16
unsigned short u16
Definition: types.h:57
l2input_main
l2input_main_t l2input_main
Definition: l2_input.c:88
ip6_icmp_neighbor_discovery_event_node
vlib_node_registration_t ip6_icmp_neighbor_discovery_event_node
Definition: ip6_neighbor.c:2547
IP6_NEIGHBOR_FLAG_STATIC
Definition: ip6_neighbor.h:33
ip6_header_t::payload_length
u16 payload_length
Definition: ip6_packet.h:332
vlib_process_get_event_data
static void * vlib_process_get_event_data(vlib_main_t *vm, uword *return_event_type_opaque)
Definition: node_funcs.h:473
ip6_neighbor_set_unset_rpc_callback
static void ip6_neighbor_set_unset_rpc_callback(ip6_neighbor_set_unset_rpc_args_t *a)
Definition: ip6_neighbor.c:757
ethernet_get_interface
ethernet_interface_t * ethernet_get_interface(ethernet_main_t *em, u32 hw_if_index)
Definition: interface.c:672
ip6_set_solicited_node_multicast_address
static void ip6_set_solicited_node_multicast_address(ip6_address_t *a, u32 id)
Definition: ip6_packet.h:168
FIB_NODE_INDEX_INVALID
#define FIB_NODE_INDEX_INVALID
Definition: fib_types.h:29
ip6_neighbor_t::key
ip6_neighbor_key_t key
Definition: ip6_neighbor.h:40
ip6_address_is_link_local_unicast
static uword ip6_address_is_link_local_unicast(ip6_address_t *a)
Definition: ip6_packet.h:296
elog_string
u32 elog_string(elog_main_t *em, char *fmt,...)
Definition: elog.c:525
icmp6_register_type
void icmp6_register_type(vlib_main_t *vm, icmp6_type_t type, u32 node_index)
Definition: icmp6.c:803
vec_len
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
Definition: vec_bootstrap.h:142
f64
double f64
Definition: types.h:142
u8
unsigned char u8
Definition: types.h:56
ip_adjacency_t_::lookup_next_index
ip_lookup_next_t lookup_next_index
Definition: lookup.h:204
icmp6_input_trace_t
Definition: icmp6.h:59
vlib_main_t
Definition: main.h:59
vec_sort_with_function
#define vec_sort_with_function(vec, f)
Sort a vector using the supplied element comparison function.
Definition: vec.h:960
unformat_free
static void unformat_free(unformat_input_t *i)
Definition: format.h:161
ip6_neighbor_ra_config
int ip6_neighbor_ra_config(vlib_main_t *vm, u32 sw_if_index, u8 suppress, u8 managed, u8 other, u8 ll_option, u8 send_unicast, u8 cease, u8 use_lifetime, u32 lifetime, u32 initial_count, u32 initial_interval, u32 max_interval, u32 min_interval, u8 is_no)
Definition: ip6_neighbor.c:2610
vlib_node_t
Definition: node.h:215
ip6_neighbor_add_del_interface_address
static void ip6_neighbor_add_del_interface_address(ip6_main_t *im, uword opaque, u32 sw_if_index, ip6_address_t *address, u32 address_length, u32 if_address_index, u32 is_delete)
callback when an interface address is added or deleted
Definition: ip6_neighbor.c:3739
vlib_frame_vector_args
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:253
vlib_cli_command_t
Definition: cli.h:91
ethernet_build_rewrite
u8 * ethernet_build_rewrite(vnet_main_t *vnm, u32 sw_if_index, vnet_link_t link_type, const void *dst_address)
build a rewrite string to use for sending packets of type &#39;link_type&#39; to &#39;dst_address&#39; ...
Definition: interface.c:79
l2input_main_t::bd_configs
l2_bridge_domain_t * bd_configs
Definition: l2_input.h:72
ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP
#define ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP
ip6_radv_prefix_t::decrement_lifetime_flag
int decrement_lifetime_flag
Definition: ip6_neighbor.c:58
hash_get_mem
#define hash_get_mem(h, key)
Definition: hash.h:268
ip6_neighbor_set_unset_rpc_args_t::addr
ip6_address_t addr
Definition: ip6_neighbor.c:326
ip6_neighbor_sw_interface_add_del
static u32 ip6_neighbor_sw_interface_add_del(vnet_main_t *vnm, u32 sw_if_index, u32 is_add)
create and initialize router advertisement parameters with default values for this intfc ...
Definition: ip6_neighbor.c:2055
ip6_icmp_neighbor_advertisement_node
static vlib_node_registration_t ip6_icmp_neighbor_advertisement_node
(constructor) VLIB_REGISTER_NODE (ip6_icmp_neighbor_advertisement_node)
Definition: ip6_neighbor.c:2592
vnet_buffer
#define vnet_buffer(b)
Definition: buffer.h:294
ip6_neighbor_sw_interface_up_down
static clib_error_t * ip6_neighbor_sw_interface_up_down(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: ip6_neighbor.c:254
ip6_radv_t::initial_adverts_interval
f64 initial_adverts_interval
Definition: ip6_neighbor.c:147
random_u32
static u32 random_u32(u32 *seed)
32-bit random number generator
Definition: random.h:69
format_unformat_error
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
VLIB_REGISTER_NODE
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:143
vnet_sw_interface_t::type
vnet_sw_interface_type_t type
Definition: interface.h:531
ip6_radv_t::mcast_adj_index
adj_index_t mcast_adj_index
Definition: ip6_neighbor.c:120
pending_resolution_t::node_index
uword node_index
Definition: arp.c:62
ip6_icmp_neighbor_discovery_event_type_t
ip6_icmp_neighbor_discovery_event_type_t
Definition: ip6_neighbor.c:201
vnet_hw_interface_t::output_node_index
u32 output_node_index
Definition: interface.h:414
adj_mcast_add_or_lock
adj_index_t adj_mcast_add_or_lock(fib_protocol_t proto, vnet_link_t link_type, u32 sw_if_index)
Mcast Adjacency.
Definition: adj_mcast.c:51
IP_LOOKUP_NEXT_REWRITE
This packet is to be rewritten and forwarded to the next processing node.
Definition: lookup.h:83
vec_foreach
#define vec_foreach(var, vec)
Vector iterator.
Definition: vec_bootstrap.h:184
ip6_address_is_unspecified
static uword ip6_address_is_unspecified(ip6_address_t *a)
Definition: ip6_packet.h:277
ip6_ethernet_update_adjacency
void ip6_ethernet_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Definition: ip6_neighbor.c:490
ip6_neighbor_t
Definition: ip6_neighbor.h:38
vlib_node_runtime_t::flags
u16 flags
Copy of main node flags.
Definition: node.h:449
ip6_radv_prefix_t::adv_valid_lifetime_in_secs
u32 adv_valid_lifetime_in_secs
Definition: ip6_neighbor.c:48
ip6_add_del_interface_address
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:447
addr
vhost_vring_addr_t addr
Definition: vhost-user.h:84
vlib_put_frame_to_node
void vlib_put_frame_to_node(vlib_main_t *vm, u32 to_node_index, vlib_frame_t *f)
Definition: main.c:196
ip6_mldp_group_t::type
u8 type
Definition: ip6_neighbor.c:71
ip6_radv_t::initial_adverts_sent
u32 initial_adverts_sent
Definition: ip6_neighbor.c:148
ip_interface_address_get_address
static void * ip_interface_address_get_address(ip_lookup_main_t *lm, ip_interface_address_t *a)
Definition: lookup.h:410
ip6_nd_find
static ip6_neighbor_t * ip6_nd_find(u32 sw_if_index, const ip6_address_t *addr)
Definition: ip6_neighbor.c:453
ip6_neighbor_main_t::mac_changes_by_address
mhash_t mac_changes_by_address
Definition: ip6_neighbor.c:181
ip6_link_local_address_from_ethernet_address
static void ip6_link_local_address_from_ethernet_address(ip6_address_t *a, u8 *ethernet_address)
Definition: ip6_packet.h:180
ip6_nd_mk_complete_walk
static adj_walk_rc_t ip6_nd_mk_complete_walk(adj_index_t ai, void *ctx)
Definition: ip6_neighbor.c:472
MAX_INITIAL_RTR_ADVERT_INTERVAL
#define MAX_INITIAL_RTR_ADVERT_INTERVAL
Definition: ip6_neighbor.c:129
flags
u32 flags
Definition: vhost-user.h:78
vec_validate_init_empty
#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:485
vlib_buffer_t::flags
u32 flags
buffer flags: VLIB_BUFFER_IS_TRACED: trace this buffer.
Definition: buffer.h:74
ip6_neighbor_cmd
clib_error_t * ip6_neighbor_cmd(vlib_main_t *vm, unformat_input_t *main_input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:2849
ip6_radv_t::max_rtr_default_lifetime
f64 max_rtr_default_lifetime
Definition: ip6_neighbor.c:139
ip6_icmp_router_advertisement_node
static vlib_node_registration_t ip6_icmp_router_advertisement_node
(constructor) VLIB_REGISTER_NODE (ip6_icmp_router_advertisement_node)
Definition: ip6_neighbor.c:2531
ip6_neighbor_main_t::neighbor_pool
ip6_neighbor_t * neighbor_pool
Definition: ip6_neighbor.c:186
adj_nbr_update_rewrite
void adj_nbr_update_rewrite(adj_index_t adj_index, adj_nbr_rewrite_flag_t flags, u8 *rewrite)
adj_nbr_update_rewrite
Definition: adj_nbr.c:293
vlib_cli_output
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:577
ip6_main_t::fib_index_by_sw_if_index
u32 * fib_index_by_sw_if_index
Definition: ip6.h:163
vlib_get_buffer
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:57
ip6_neighbor_t::link_layer_address
u8 link_layer_address[8]
Definition: ip6_neighbor.h:41
pending_resolution_t::data
uword data
Definition: arp.c:64
icmp6_router_advertisement
static_always_inline uword icmp6_router_advertisement(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ip6_neighbor.c:1663
ip6_address_t
Definition: ip6_packet.h:46
unformat
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:971
MAX_DEF_RTR_LIFETIME
#define MAX_DEF_RTR_LIFETIME
Definition: ip6_neighbor.c:127
ip6_radv_t::adv_link_mtu
u32 adv_link_mtu
Definition: ip6_neighbor.c:90
VLIB_RX
Definition: defs.h:46
ip6_neighbor_main
static ip6_neighbor_main_t ip6_neighbor_main
Definition: ip6_neighbor.c:216
ip6_neighbor_main_t::mac_changes
pending_resolution_t * mac_changes
Definition: ip6_neighbor.c:182
ip6_radv_t::seed
u32 seed
Definition: ip6_neighbor.c:117
ip6_header_t::dst_address
ip6_address_t dst_address
Definition: ip6_packet.h:341
ip6_interface_enabled
int ip6_interface_enabled(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:3331
unformat_check_input
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:169
ip6_set_reserved_multicast_address
static void ip6_set_reserved_multicast_address(ip6_address_t *a, ip6_multicast_address_scope_t scope, u16 id)
Definition: ip6_packet.h:158
ip_get_adjacency
static ip_adjacency_t * ip_get_adjacency(ip_lookup_main_t *lm, u32 adj_index)
Definition: lookup.h:377
ip6_icmp_neighbor_discovery_event_data_t::add_del_swindex
u32 add_del_swindex
Definition: ip6_neighbor.c:208
FIB_SOURCE_IP6_ND_PROXY
IPv6 Proxy ND.
Definition: fib_entry.h:86
ip_interface_address_t::next_this_sw_interface
u32 next_this_sw_interface
Definition: lookup.h:313
ip6_icmp_neighbor_discovery_event_data_t
Definition: ip6_neighbor.c:206
ip6_set_neighbor_limit
clib_error_t * ip6_set_neighbor_limit(u32 neighbor_limit)
Definition: ip6_neighbor.c:3810
ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY
Definition: ip6_neighbor.c:926
format_icmp6_input_trace
format_function_t format_icmp6_input_trace
Definition: icmp6.h:64
ip6_radv_prefix_t::prefix_len
u8 prefix_len
Definition: ip6_neighbor.c:45
adj_nbr_walk_nh6
void adj_nbr_walk_nh6(u32 sw_if_index, const ip6_address_t *addr, adj_walk_cb_t cb, void *ctx)
Walk adjacencies on a link with a given v6 next-hop.
Definition: adj_nbr.c:645
pool_elts
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:109