FD.io VPP  v19.04.2-12-g66b1689
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 <vnet/adj/adj.h>
23 #include <vnet/adj/adj_mcast.h>
24 #include <vnet/fib/fib_table.h>
25 #include <vnet/fib/ip6_fib.h>
26 #include <vnet/mfib/ip6_mfib.h>
27 #include <vnet/ip/ip6_ll_table.h>
28 #include <vnet/l2/l2_input.h>
29 #include <vlibmemory/api.h>
30 
31 /**
32  * @file
33  * @brief IPv6 Neighbor Adjacency and Neighbor Discovery.
34  *
35  * The files contains the API and CLI code for managing IPv6 neighbor
36  * adjacency tables and neighbor discovery logic.
37  */
38 
39 /* can't use sizeof link_layer_address, that's 8 */
40 #define ETHER_MAC_ADDR_LEN 6
41 
42 /* advertised prefix option */
43 typedef struct
44 {
45  /* basic advertised information */
46  ip6_address_t prefix;
47  u8 prefix_len;
48  int adv_on_link_flag;
49  int adv_autonomous_flag;
50  u32 adv_valid_lifetime_in_secs;
51  u32 adv_pref_lifetime_in_secs;
52 
53  /* advertised values are computed from these times if decrementing */
54  f64 valid_lifetime_expires;
55  f64 pref_lifetime_expires;
56 
57  /* local information */
58  int enabled;
59  int deprecated_prefix_flag;
60  int decrement_lifetime_flag;
61 
62 #define MIN_ADV_VALID_LIFETIME 7203 /* seconds */
63 #define DEF_ADV_VALID_LIFETIME 2592000
64 #define DEF_ADV_PREF_LIFETIME 604800
65 
66  /* extensions are added here, mobile, DNS etc.. */
67 } ip6_radv_prefix_t;
68 
69 
70 typedef struct
71 {
72  /* group information */
73  u8 type;
74  ip6_address_t mcast_address;
75  u16 num_sources;
76  ip6_address_t *mcast_source_address_pool;
77 } ip6_mldp_group_t;
78 
79 /* configured router advertisement information per ipv6 interface */
80 typedef struct
81 {
82 
83  /* advertised config information, zero means unspecified */
84  u8 curr_hop_limit;
85  int adv_managed_flag;
86  int adv_other_flag;
87  u16 adv_router_lifetime_in_sec;
88  u32 adv_neighbor_reachable_time_in_msec;
89  u32 adv_time_in_msec_between_retransmitted_neighbor_solicitations;
90 
91  /* mtu option */
92  u32 adv_link_mtu;
93 
94  /* source link layer option */
95  u8 link_layer_address[8];
96  u8 link_layer_addr_len;
97 
98  /* prefix option */
99  ip6_radv_prefix_t *adv_prefixes_pool;
100 
101  /* Hash table mapping address to index in interface advertised prefix pool. */
102  mhash_t address_to_prefix_index;
103 
104  /* MLDP group information */
105  ip6_mldp_group_t *mldp_group_pool;
106 
107  /* Hash table mapping address to index in mldp address pool. */
108  mhash_t address_to_mldp_index;
109 
110  /* local information */
111  u32 sw_if_index;
112  int send_radv; /* radv on/off on this interface - set by config */
113  int cease_radv; /* we are ceasing to send - set byf config */
114  int send_unicast;
115  int adv_link_layer_address;
116  int prefix_option;
117  int failed_device_check;
118  int all_routers_mcast;
119  u32 seed;
120  u64 randomizer;
121  int ref_count;
122  adj_index_t mcast_adj_index;
123 
124  /* timing information */
125 #define DEF_MAX_RADV_INTERVAL 200
126 #define DEF_MIN_RADV_INTERVAL .75 * DEF_MAX_RADV_INTERVAL
127 #define DEF_CURR_HOP_LIMIT 64
128 #define DEF_DEF_RTR_LIFETIME 3 * DEF_MAX_RADV_INTERVAL
129 #define MAX_DEF_RTR_LIFETIME 9000
130 
131 #define MAX_INITIAL_RTR_ADVERT_INTERVAL 16 /* seconds */
132 #define MAX_INITIAL_RTR_ADVERTISEMENTS 3 /*transmissions */
133 #define MIN_DELAY_BETWEEN_RAS 3 /* seconds */
134 #define MAX_DELAY_BETWEEN_RAS 1800 /* seconds */
135 #define MAX_RA_DELAY_TIME .5 /* seconds */
136 
137  f64 max_radv_interval;
138  f64 min_radv_interval;
139  f64 min_delay_between_radv;
140  f64 max_delay_between_radv;
141  f64 max_rtr_default_lifetime;
142 
143  f64 last_radv_time;
144  f64 last_multicast_time;
145  f64 next_multicast_time;
146 
147 
148  u32 initial_adverts_count;
149  f64 initial_adverts_interval;
150  u32 initial_adverts_sent;
151 
152  /* stats */
153  u32 n_advertisements_sent;
154  u32 n_solicitations_rcvd;
155  u32 n_solicitations_dropped;
156 
157  /* Link local address to use (defaults to underlying physical for logical interfaces */
158  ip6_address_t link_local_address;
159 
160  /* router solicitations sending state */
161  u8 keep_sending_rs; /* when true then next fields are valid */
162  icmp6_send_router_solicitation_params_t params;
163  f64 sleep_interval;
164  f64 due_time;
165  u32 n_left;
166  f64 start_time;
167  vlib_buffer_t *buffer;
168 } ip6_radv_t;
169 
170 typedef struct
171 {
172  u32 next_index;
173  uword node_index;
174  uword type_opaque;
175  uword data;
176  /* Used for nd event notification only */
177  ip6_nd_change_event_cb_t data_callback;
178  u32 pid;
179 } pending_resolution_t;
180 
181 
182 typedef struct
183 {
184  /* Hash tables mapping name to opcode. */
185  uword *opcode_by_name;
186 
187  /* lite beer "glean" adjacency handling */
188  mhash_t pending_resolutions_by_address;
189  pending_resolution_t *pending_resolutions;
190 
191  /* Mac address change notification */
192  mhash_t mac_changes_by_address;
193  pending_resolution_t *mac_changes;
194 
195  u32 *neighbor_input_next_index_by_hw_if_index;
196 
197  ip6_neighbor_t *neighbor_pool;
198 
199  mhash_t neighbor_index_by_key;
200 
201  u32 *if_radv_pool_index_by_sw_if_index;
202 
203  ip6_radv_t *if_radv_pool;
204 
205  /* Neighbor attack mitigation */
206  u32 limit_neighbor_cache_size;
207  u32 neighbor_delete_rotor;
208 
209  /* Wildcard nd report publisher */
210  uword wc_ip6_nd_publisher_node;
211  uword wc_ip6_nd_publisher_et;
212 
213  /* Router advertisement report publisher */
214  uword ip6_ra_publisher_node;
215  uword ip6_ra_publisher_et;
216 } ip6_neighbor_main_t;
217 
218 /* ipv6 neighbor discovery - timer/event types */
219 typedef enum
220 {
221  ICMP6_ND_EVENT_INIT,
222 } ip6_icmp_neighbor_discovery_event_type_t;
223 
224 typedef union
225 {
226  u32 add_del_swindex;
227  struct
228  {
229  u32 up_down_swindex;
230  u32 fib_index;
231  } up_down_event;
232 } ip6_icmp_neighbor_discovery_event_data_t;
233 
234 static ip6_neighbor_main_t ip6_neighbor_main;
235 ip6_neighbor_public_main_t ip6_neighbor_public_main;
236 static ip6_address_t ip6a_zero; /* ip6 address 0 */
237 
238 static void wc_nd_signal_report (wc_nd_report_t * r);
239 static void ra_signal_report (ra_report_t * r);
240 
241 ip6_address_t
242 ip6_neighbor_get_link_local_address (u32 sw_if_index)
243 {
244  static ip6_address_t empty_address = { {0} };
245  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
246  ip6_radv_t *radv_info;
247  u32 ri = ~0;
248 
249  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) > sw_if_index)
250  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
251  if (ri == ~0)
252  {
253  clib_warning ("IPv6 is not enabled for sw_if_index %d", sw_if_index);
254  return empty_address;
255  }
256  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
257  if (radv_info == NULL)
258  {
259  clib_warning ("Internal error");
260  return empty_address;
261  }
262  return radv_info->link_local_address;
263 }
264 
265 /**
266  * @brief publish wildcard arp event
267  * @param sw_if_index The interface on which the ARP entries are acted
268  */
269 static int
270 vnet_nd_wc_publish (u32 sw_if_index,
271  const mac_address_t * mac, const ip6_address_t * ip6)
272 {
273  wc_nd_report_t r = {
274  .sw_if_index = sw_if_index,
275  .ip6 = *ip6,
276  .mac = *mac,
277  };
278 
279  vl_api_rpc_call_main_thread (wc_nd_signal_report, (u8 *) & r, sizeof r);
280  return 0;
281 }
282 
283 static void
284 wc_nd_signal_report (wc_nd_report_t * r)
285 {
286  vlib_main_t *vm = vlib_get_main ();
287  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
288  uword ni = nm->wc_ip6_nd_publisher_node;
289  uword et = nm->wc_ip6_nd_publisher_et;
290 
291  if (ni == (uword) ~ 0)
292  return;
293  wc_nd_report_t *q =
294  vlib_process_signal_event_data (vm, ni, et, 1, sizeof *q);
295 
296  *q = *r;
297 }
298 
299 void
300 wc_nd_set_publisher_node (uword node_index, uword event_type)
301 {
302  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
303  nm->wc_ip6_nd_publisher_node = node_index;
304  nm->wc_ip6_nd_publisher_et = event_type;
305 }
306 
307 static int
308 ra_publish (ra_report_t * r)
309 {
310  void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
311  vl_api_rpc_call_main_thread (ra_signal_report, (u8 *) r, sizeof *r);
312  return 0;
313 }
314 
315 static void
316 ra_signal_report (ra_report_t * r)
317 {
318  vlib_main_t *vm = vlib_get_main ();
319  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
320  uword ni = nm->ip6_ra_publisher_node;
321  uword et = nm->ip6_ra_publisher_et;
322 
323  if (ni == (uword) ~ 0)
324  return;
325  ra_report_t *q = vlib_process_signal_event_data (vm, ni, et, 1, sizeof *q);
326 
327  *q = *r;
328 }
329 
330 void
331 ra_set_publisher_node (uword node_index, uword event_type)
332 {
333  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
334  nm->ip6_ra_publisher_node = node_index;
335  nm->ip6_ra_publisher_et = event_type;
336 }
337 
338 static u8 *
339 format_ip6_neighbor_ip6_entry (u8 * s, va_list * va)
340 {
341  vlib_main_t *vm = va_arg (*va, vlib_main_t *);
342  ip6_neighbor_t *n = va_arg (*va, ip6_neighbor_t *);
343  vnet_main_t *vnm = vnet_get_main ();
344  vnet_sw_interface_t *si;
345  u8 *flags = 0;
346 
347  if (!n)
348  return format (s, "%=12s%=45s%=6s%=20s%=40s", "Time", "Address", "Flags",
349  "Link layer", "Interface");
350 
351  if (n->flags & IP_NEIGHBOR_FLAG_DYNAMIC)
352  flags = format (flags, "D");
353 
354  if (n->flags & IP_NEIGHBOR_FLAG_STATIC)
355  flags = format (flags, "S");
356 
357  if (n->flags & IP_NEIGHBOR_FLAG_NO_FIB_ENTRY)
358  flags = format (flags, "N");
359 
360  si = vnet_get_sw_interface (vnm, n->key.sw_if_index);
361  s = format (s, "%=12U%=45U%=6s%=20U%=40U",
362  format_vlib_time, vm, n->time_last_updated,
363  format_ip6_address, &n->key.ip6_address,
364  flags ? (char *) flags : "",
365  format_mac_address_t, &n->mac,
366  format_vnet_sw_interface_name, vnm, si);
367 
368  vec_free (flags);
369  return s;
370 }
371 
372 static void
373 ip6_neighbor_adj_fib_remove (ip6_neighbor_t * n, u32 fib_index)
374 {
375  if (FIB_NODE_INDEX_INVALID != n->fib_entry_index)
376  {
377  if (ip6_address_is_link_local_unicast (&n->key.ip6_address))
378  {
379  ip6_ll_prefix_t pfx = {
380  .ilp_addr = n->key.ip6_address,
381  .ilp_sw_if_index = n->key.sw_if_index,
382  };
383  ip6_ll_table_entry_delete (&pfx);
384  }
385  else
386  {
387  fib_prefix_t pfx = {
388  .fp_len = 128,
389  .fp_proto = FIB_PROTOCOL_IP6,
390  .fp_addr.ip6 = n->key.ip6_address,
391  };
392  fib_table_entry_path_remove (fib_index,
393  &pfx,
394  FIB_SOURCE_ADJ,
395  DPO_PROTO_IP6,
396  &pfx.fp_addr,
397  n->key.sw_if_index, ~0,
398  1, FIB_ROUTE_PATH_FLAG_NONE);
399  }
400  }
401 }
402 
403 typedef struct
404 {
405  u8 is_add;
406  ip_neighbor_flags_t flags;
407  mac_address_t mac;
408  u32 sw_if_index;
409  ip6_address_t addr;
410 } ip6_neighbor_set_unset_rpc_args_t;
411 
412 static void ip6_neighbor_set_unset_rpc_callback
413  (ip6_neighbor_set_unset_rpc_args_t * a);
414 
415 static void set_unset_ip6_neighbor_rpc
416  (vlib_main_t * vm,
417  u32 sw_if_index,
418  const ip6_address_t * a,
419  const mac_address_t * mac, int is_add, ip_neighbor_flags_t flags)
420 {
421  ip6_neighbor_set_unset_rpc_args_t args;
422  void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
423 
424  args.sw_if_index = sw_if_index;
425  args.is_add = is_add;
426  args.flags = flags;
427  ip6_address_copy (&args.addr, a);
428  mac_address_copy (&args.mac, mac);
429 
430  vl_api_rpc_call_main_thread (ip6_neighbor_set_unset_rpc_callback,
431  (u8 *) & args, sizeof (args));
432 }
433 
434 static void
435 ip6_nbr_probe (ip_adjacency_t * adj)
436 {
437  icmp6_neighbor_solicitation_header_t *h;
438  vnet_main_t *vnm = vnet_get_main ();
439  ip6_main_t *im = &ip6_main;
440  ip_interface_address_t *ia;
441  ip6_address_t *dst, *src;
442  vnet_hw_interface_t *hi;
443  vnet_sw_interface_t *si;
444  vlib_buffer_t *b;
445  int bogus_length;
446  vlib_main_t *vm;
447  u32 bi = 0;
448 
449  vm = vlib_get_main ();
450 
451  si = vnet_get_sw_interface (vnm, adj->rewrite_header.sw_if_index);
452  dst = &adj->sub_type.nbr.next_hop.ip6;
453 
454  if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
455  {
456  return;
457  }
458  src = ip6_interface_address_matching_destination (im, dst,
459  adj->rewrite_header.
460  sw_if_index, &ia);
461  if (!src)
462  {
463  return;
464  }
465 
466  h = vlib_packet_template_get_packet (vm,
467  &im->discover_neighbor_packet_template,
468  &bi);
469  if (!h)
470  return;
471 
472  hi = vnet_get_sup_hw_interface (vnm, adj->rewrite_header.sw_if_index);
473 
474  h->ip.dst_address.as_u8[13] = dst->as_u8[13];
475  h->ip.dst_address.as_u8[14] = dst->as_u8[14];
476  h->ip.dst_address.as_u8[15] = dst->as_u8[15];
477  h->ip.src_address = src[0];
478  h->neighbor.target_address = dst[0];
479 
480  clib_memcpy (h->link_layer_option.ethernet_address,
481  hi->hw_address, vec_len (hi->hw_address));
482 
483  h->neighbor.icmp.checksum =
484  ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h->ip, &bogus_length);
485  ASSERT (bogus_length == 0);
486 
487  b = vlib_get_buffer (vm, bi);
488  vnet_buffer (b)->sw_if_index[VLIB_RX] =
489  vnet_buffer (b)->sw_if_index[VLIB_TX] = adj->rewrite_header.sw_if_index;
490 
491  /* Add encapsulation string for software interface (e.g. ethernet header). */
492  vnet_rewrite_one_header (adj[0], h, sizeof (ethernet_header_t));
493  vlib_buffer_advance (b, -adj->rewrite_header.data_bytes);
494 
495  {
496  vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index);
497  u32 *to_next = vlib_frame_vector_args (f);
498  to_next[0] = bi;
499  f->n_vectors = 1;
500  vlib_put_frame_to_node (vm, hi->output_node_index, f);
501  }
502 }
503 
504 static void
505 ip6_nd_mk_complete (adj_index_t ai, ip6_neighbor_t * nbr)
506 {
507  adj_nbr_update_rewrite (ai, ADJ_NBR_REWRITE_FLAG_COMPLETE,
508  ethernet_build_rewrite (vnet_get_main (),
509  nbr->key.sw_if_index,
510  adj_get_link_type (ai),
511  nbr->mac.bytes));
512 }
513 
514 static void
515 ip6_nd_mk_incomplete (adj_index_t ai)
516 {
517  ip_adjacency_t *adj = adj_get (ai);
518 
519  adj_nbr_update_rewrite (ai,
520  ADJ_NBR_REWRITE_FLAG_INCOMPLETE,
521  ethernet_build_rewrite (vnet_get_main (),
522  adj->rewrite_header.
523  sw_if_index,
524  adj_get_link_type (ai),
525  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
526 }
527 
528 #define IP6_NBR_MK_KEY(k, sw_if_index, addr) \
529 { \
530  k.sw_if_index = sw_if_index; \
531  k.ip6_address = *addr; \
532  k.pad = 0; \
533 }
534 
535 static ip6_neighbor_t *
536 ip6_nd_find (u32 sw_if_index, const ip6_address_t * addr)
537 {
538  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
539  ip6_neighbor_t *n = NULL;
540  ip6_neighbor_key_t k;
541  uword *p;
542 
543  IP6_NBR_MK_KEY (k, sw_if_index, addr);
544 
545  p = mhash_get (&nm->neighbor_index_by_key, &k);
546  if (p)
547  {
548  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
549  }
550 
551  return (n);
552 }
553 
554 static adj_walk_rc_t
555 ip6_nd_mk_complete_walk (adj_index_t ai, void *ctx)
556 {
557  ip6_neighbor_t *nbr = ctx;
558 
559  ip6_nd_mk_complete (ai, nbr);
560 
561  return (ADJ_WALK_RC_CONTINUE);
562 }
563 
564 static adj_walk_rc_t
565 ip6_nd_mk_incomplete_walk (adj_index_t ai, void *ctx)
566 {
567  ip6_nd_mk_incomplete (ai);
568 
569  return (ADJ_WALK_RC_CONTINUE);
570 }
571 
572 static clib_error_t *
573 ip6_neighbor_sw_interface_up_down (vnet_main_t * vnm,
574  u32 sw_if_index, u32 flags)
575 {
576  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
577  ip6_neighbor_t *n;
578  u32 i, *to_delete = 0;
579 
580  /* *INDENT-OFF* */
581  pool_foreach (n, nm->neighbor_pool,
582  ({
583  if (n->key.sw_if_index == sw_if_index)
584  vec_add1 (to_delete, n - nm->neighbor_pool);
585  }));
586  /* *INDENT-ON* */
587 
588  if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
589  {
590  for (i = 0; i < vec_len (to_delete); i++)
591  {
592  n = pool_elt_at_index (nm->neighbor_pool, to_delete[i]);
593  adj_nbr_walk_nh6 (n->key.sw_if_index, &n->key.ip6_address,
594  ip6_nd_mk_complete_walk, n);
595  }
596  }
597  else
598  {
599  for (i = 0; i < vec_len (to_delete); i++)
600  {
601  n = pool_elt_at_index (nm->neighbor_pool, to_delete[i]);
602  adj_nbr_walk_nh6 (n->key.sw_if_index, &n->key.ip6_address,
603  ip6_nd_mk_incomplete_walk, NULL);
604  if (n->flags & IP_NEIGHBOR_FLAG_STATIC)
605  continue;
606  ip6_neighbor_adj_fib_remove (n,
607  ip6_fib_table_get_index_for_sw_if_index
608  (n->key.sw_if_index));
609  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
610  pool_put (nm->neighbor_pool, n);
611  }
612  }
613 
614  vec_free (to_delete);
615  return 0;
616 }
617 
618 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (ip6_neighbor_sw_interface_up_down);
619 
620 void
621 ip6_ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
622 {
623  ip6_neighbor_t *nbr;
624  ip_adjacency_t *adj;
625 
626  adj = adj_get (ai);
627 
628  nbr = ip6_nd_find (sw_if_index, &adj->sub_type.nbr.next_hop.ip6);
629 
630  switch (adj->lookup_next_index)
631  {
632  case IP_LOOKUP_NEXT_GLEAN:
633  adj_glean_update_rewrite (ai);
634  break;
635  case IP_LOOKUP_NEXT_ARP:
636  if (NULL != nbr)
637  {
638  adj_nbr_walk_nh6 (sw_if_index, &nbr->key.ip6_address,
639  ip6_nd_mk_complete_walk, nbr);
640  }
641  else
642  {
643  /*
644  * no matching ND entry.
645  * construct the rewrite required to for an ND packet, and stick
646  * that in the adj's pipe to smoke.
647  */
648  adj_nbr_update_rewrite (ai,
649  ADJ_NBR_REWRITE_FLAG_INCOMPLETE,
650  ethernet_build_rewrite (vnm,
651  sw_if_index,
652  VNET_LINK_IP6,
653  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
654 
655  /*
656  * since the FIB has added this adj for a route, it makes sense it may
657  * want to forward traffic sometime soon. Let's send a speculative ND.
658  * just one. If we were to do periodically that wouldn't be bad either,
659  * but that's more code than i'm prepared to write at this time for
660  * relatively little reward.
661  */
662  ip6_nbr_probe (adj);
663  }
664  break;
665  case IP_LOOKUP_NEXT_BCAST:
666  adj_nbr_update_rewrite (ai,
667  ADJ_NBR_REWRITE_FLAG_COMPLETE,
668  ethernet_build_rewrite (vnm,
669  sw_if_index,
670  VNET_LINK_IP6,
671  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
672  break;
673  case IP_LOOKUP_NEXT_MCAST:
674  {
675  /*
676  * Construct a partial rewrite from the known ethernet mcast dest MAC
677  */
678  u8 *rewrite;
679  u8 offset;
680 
681  rewrite = ethernet_build_rewrite (vnm,
682  sw_if_index,
683  adj->ia_link,
684  ethernet_ip6_mcast_dst_addr ());
685 
686  /*
687  * Complete the remaining fields of the adj's rewrite to direct the
688  * complete of the rewrite at switch time by copying in the IP
689  * dst address's bytes.
690  * Ofset is 2 bytes into the destintation address.
691  */
692  offset = vec_len (rewrite) - 2;
693  adj_mcast_update_rewrite (ai, rewrite, offset);
694 
695  break;
696  }
697  case IP_LOOKUP_NEXT_DROP:
698  case IP_LOOKUP_NEXT_PUNT:
699  case IP_LOOKUP_NEXT_LOCAL:
700  case IP_LOOKUP_NEXT_REWRITE:
701  case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
702  case IP_LOOKUP_NEXT_MIDCHAIN:
703  case IP_LOOKUP_NEXT_ICMP_ERROR:
704  case IP_LOOKUP_N_NEXT:
705  ASSERT (0);
706  break;
707  }
708 }
709 
710 
711 static void
712 ip6_neighbor_adj_fib_add (ip6_neighbor_t * n, u32 fib_index)
713 {
714  if (ip6_address_is_link_local_unicast (&n->key.ip6_address))
715  {
716  ip6_ll_prefix_t pfx = {
717  .ilp_addr = n->key.ip6_address,
718  .ilp_sw_if_index = n->key.sw_if_index,
719  };
720  n->fib_entry_index =
721  ip6_ll_table_entry_update (&pfx, FIB_ROUTE_PATH_FLAG_NONE);
722  }
723  else
724  {
725  fib_prefix_t pfx = {
726  .fp_len = 128,
727  .fp_proto = FIB_PROTOCOL_IP6,
728  .fp_addr.ip6 = n->key.ip6_address,
729  };
730 
731  n->fib_entry_index =
732  fib_table_entry_path_add (fib_index, &pfx, FIB_SOURCE_ADJ,
733  FIB_ENTRY_FLAG_ATTACHED,
734  DPO_PROTO_IP6, &pfx.fp_addr,
735  n->key.sw_if_index, ~0, 1, NULL,
736  FIB_ROUTE_PATH_FLAG_NONE);
737  }
738 }
739 
740 static ip6_neighbor_t *
741 force_reuse_neighbor_entry (void)
742 {
743  ip6_neighbor_t *n;
744  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
745  u32 count = 0;
746  u32 index = pool_next_index (nm->neighbor_pool, nm->neighbor_delete_rotor);
747  if (index == ~0) /* Try again from elt 0 */
748  index = pool_next_index (nm->neighbor_pool, index);
749 
750  /* Find a non-static random entry to free up for reuse */
751  do
752  {
753  if ((count++ == 100) || (index == ~0))
754  return NULL; /* give up after 100 entries */
755  n = pool_elt_at_index (nm->neighbor_pool, index);
756  nm->neighbor_delete_rotor = index;
757  index = pool_next_index (nm->neighbor_pool, index);
758  }
759  while (n->flags & IP_NEIGHBOR_FLAG_STATIC);
760 
761  /* Remove ARP entry from its interface and update fib */
762  adj_nbr_walk_nh6 (n->key.sw_if_index,
763  &n->key.ip6_address, ip6_nd_mk_incomplete_walk, NULL);
764  ip6_neighbor_adj_fib_remove
765  (n, ip6_fib_table_get_index_for_sw_if_index (n->key.sw_if_index));
766  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
767 
768  return n;
769 }
770 
771 int
772 vnet_set_ip6_ethernet_neighbor (vlib_main_t * vm,
773  u32 sw_if_index,
774  const ip6_address_t * a,
775  const mac_address_t * mac,
776  ip_neighbor_flags_t flags)
777 {
778  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
779  ip6_neighbor_key_t k;
780  ip6_neighbor_t *n = 0;
781  int make_new_nd_cache_entry = 1;
782  uword *p;
783  u32 next_index;
784  pending_resolution_t *pr, *mc;
785 
786  if (vlib_get_thread_index ())
787  {
788  set_unset_ip6_neighbor_rpc (vm, sw_if_index, a, mac, 1, flags);
789  return 0;
790  }
791 
792  k.sw_if_index = sw_if_index;
793  k.ip6_address = a[0];
794  k.pad = 0;
795 
796  p = mhash_get (&nm->neighbor_index_by_key, &k);
797  if (p)
798  {
799  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
800  /* Refuse to over-write static neighbor entry. */
801  if (!(flags & IP_NEIGHBOR_FLAG_STATIC) &&
802  (n->flags & IP_NEIGHBOR_FLAG_STATIC))
803  {
804  /* if MAC address match, still check to send event */
805  if (0 == mac_address_cmp (&n->mac, mac))
806  goto check_customers;
807  return -2;
808  }
809  make_new_nd_cache_entry = 0;
810  }
811 
812  if (make_new_nd_cache_entry)
813  {
814  if (nm->limit_neighbor_cache_size &&
815  pool_elts (nm->neighbor_pool) >= nm->limit_neighbor_cache_size)
816  {
817  n = force_reuse_neighbor_entry ();
818  if (NULL == n)
819  return -2;
820  }
821  else
822  pool_get (nm->neighbor_pool, n);
823 
824  mhash_set (&nm->neighbor_index_by_key, &k, n - nm->neighbor_pool,
825  /* old value */ 0);
826  n->key = k;
827  n->fib_entry_index = FIB_NODE_INDEX_INVALID;
828 
829  mac_address_copy (&n->mac, mac);
830 
831  /*
832  * create the adj-fib. the entry in the FIB table for and to the peer.
833  */
834  if (!(flags & IP_NEIGHBOR_FLAG_NO_FIB_ENTRY))
835  {
836  ip6_neighbor_adj_fib_add
837  (n, ip6_fib_table_get_index_for_sw_if_index (n->key.sw_if_index));
838  }
839  else
840  {
841  n->flags |= IP_NEIGHBOR_FLAG_NO_FIB_ENTRY;
842  }
843  }
844  else
845  {
846  /*
847  * prevent a DoS attack from the data-plane that
848  * spams us with no-op updates to the MAC address
849  */
850  if (0 == mac_address_cmp (&n->mac, mac))
851  {
852  n->time_last_updated = vlib_time_now (vm);
853  goto check_customers;
854  }
855 
856  mac_address_copy (&n->mac, mac);
857  }
858 
859  /* Update time stamp and flags. */
860  n->time_last_updated = vlib_time_now (vm);
861  if (flags & IP_NEIGHBOR_FLAG_STATIC)
862  {
863  n->flags |= IP_NEIGHBOR_FLAG_STATIC;
864  n->flags &= ~IP_NEIGHBOR_FLAG_DYNAMIC;
865  }
866  else
867  {
868  n->flags |= IP_NEIGHBOR_FLAG_DYNAMIC;
869  n->flags &= ~IP_NEIGHBOR_FLAG_STATIC;
870  }
871 
872  adj_nbr_walk_nh6 (sw_if_index,
873  &n->key.ip6_address, ip6_nd_mk_complete_walk, n);
874 
875 check_customers:
876  /* Customer(s) waiting for this address to be resolved? */
877  p = mhash_get (&nm->pending_resolutions_by_address, a);
878  if (p)
879  {
880  next_index = p[0];
881 
882  while (next_index != (u32) ~ 0)
883  {
884  pr = pool_elt_at_index (nm->pending_resolutions, next_index);
885  vlib_process_signal_event (vm, pr->node_index,
886  pr->type_opaque, pr->data);
887  next_index = pr->next_index;
888  pool_put (nm->pending_resolutions, pr);
889  }
890 
891  mhash_unset (&nm->pending_resolutions_by_address, (void *) a, 0);
892  }
893 
894  /* Customer(s) requesting ND event for this address? */
895  p = mhash_get (&nm->mac_changes_by_address, a);
896  if (p)
897  {
898  next_index = p[0];
899 
900  while (next_index != (u32) ~ 0)
901  {
902  int rv = 1;
903 
904  mc = pool_elt_at_index (nm->mac_changes, next_index);
905 
906  /* Call the user's data callback, return 1 to suppress dup events */
907  if (mc->data_callback)
908  rv = (mc->data_callback) (mc->data, mac, sw_if_index, &ip6a_zero);
909  /*
910  * Signal the resolver process, as long as the user
911  * says they want to be notified
912  */
913  if (rv == 0)
914  vlib_process_signal_event (vm, mc->node_index,
915  mc->type_opaque, mc->data);
916  next_index = mc->next_index;
917  }
918  }
919 
920  return 0;
921 }
922 
923 int
924 vnet_unset_ip6_ethernet_neighbor (vlib_main_t * vm,
925  u32 sw_if_index, const ip6_address_t * a)
926 {
927  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
928  ip6_neighbor_key_t k;
929  ip6_neighbor_t *n;
930  uword *p;
931  int rv = 0;
932 
933  if (vlib_get_thread_index ())
934  {
935  set_unset_ip6_neighbor_rpc (vm, sw_if_index, a, NULL, 0,
936  IP_NEIGHBOR_FLAG_NONE);
937  return 0;
938  }
939 
940  k.sw_if_index = sw_if_index;
941  k.ip6_address = a[0];
942  k.pad = 0;
943 
944  p = mhash_get (&nm->neighbor_index_by_key, &k);
945  if (p == 0)
946  {
947  rv = -1;
948  goto out;
949  }
950 
951  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
952 
953  adj_nbr_walk_nh6 (sw_if_index,
954  &n->key.ip6_address, ip6_nd_mk_incomplete_walk, NULL);
955  ip6_neighbor_adj_fib_remove
956  (n, ip6_fib_table_get_index_for_sw_if_index (sw_if_index));
957 
958  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
959  pool_put (nm->neighbor_pool, n);
960 
961 out:
962  return rv;
963 }
964 
965 static void ip6_neighbor_set_unset_rpc_callback
966  (ip6_neighbor_set_unset_rpc_args_t * a)
967 {
968  vlib_main_t *vm = vlib_get_main ();
969  if (a->is_add)
970  vnet_set_ip6_ethernet_neighbor (vm, a->sw_if_index, &a->addr,
971  &a->mac, a->flags);
972  else
973  vnet_unset_ip6_ethernet_neighbor (vm, a->sw_if_index, &a->addr);
974 }
975 
976 static int
977 ip6_neighbor_sort (void *a1, void *a2)
978 {
979  vnet_main_t *vnm = vnet_get_main ();
980  ip6_neighbor_t *n1 = a1, *n2 = a2;
981  int cmp;
982  cmp = vnet_sw_interface_compare (vnm, n1->key.sw_if_index,
983  n2->key.sw_if_index);
984  if (!cmp)
985  cmp = ip6_address_compare (&n1->key.ip6_address, &n2->key.ip6_address);
986  return cmp;
987 }
988 
989 ip6_neighbor_t *
990 ip6_neighbors_pool (void)
991 {
992  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
993  return nm->neighbor_pool;
994 }
995 
996 ip6_neighbor_t *
997 ip6_neighbors_entries (u32 sw_if_index)
998 {
999  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1000  ip6_neighbor_t *n, *ns = NULL;
1001 
1002  /* *INDENT-OFF* */
1003  pool_foreach (n, nm->neighbor_pool,
1004  ({
1005  if (sw_if_index != ~0 && n->key.sw_if_index != sw_if_index)
1006  continue;
1007  vec_add1 (ns, n[0]);
1008  }));
1009  /* *INDENT-ON* */
1010 
1011  if (ns)
1012  vec_sort_with_function (ns, ip6_neighbor_sort);
1013  return ns;
1014 }
1015 
1016 static clib_error_t *
1017 show_ip6_neighbors (vlib_main_t * vm,
1018  unformat_input_t * input, vlib_cli_command_t * cmd)
1019 {
1020  vnet_main_t *vnm = vnet_get_main ();
1021  ip6_neighbor_t *n, *ns;
1022  clib_error_t *error = 0;
1023  u32 sw_if_index;
1024  int verbose = 0;
1025 
1026  if (unformat (input, "verbose"))
1027  verbose = 1;
1028 
1029  /* Filter entries by interface if given. */
1030  sw_if_index = ~0;
1031  (void) unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index);
1032 
1033  ns = ip6_neighbors_entries (sw_if_index);
1034  if (ns)
1035  {
1036  /*
1037  * Show the entire table if it's not too big, otherwise just
1038  * show the size of the table.
1039  */
1040  if (vec_len (ns) < 50)
1041  verbose = 1;
1042  if (verbose)
1043  {
1044  vlib_cli_output (vm, "%U", format_ip6_neighbor_ip6_entry, vm, 0);
1045  vec_foreach (n, ns)
1046  {
1047  vlib_cli_output (vm, "%U", format_ip6_neighbor_ip6_entry, vm, n);
1048  }
1049  }
1050  else
1051  vlib_cli_output
1052  (vm, "There are %u ip6 neighbors, "
1053  "'show ip6 neighbors verbose' to display the entire table...",
1054  vec_len (ns));
1055  vec_free (ns);
1056  }
1057  else
1058  vlib_cli_output (vm, "No ip6 neighbors");
1059 
1060  return error;
1061 }
1062 
1063 /*?
1064  * This command is used to display the adjacent IPv6 hosts found via
1065  * neighbor discovery. Optionally, limit the output to the specified
1066  * interface.
1067  *
1068  * @cliexpar
1069  * Example of how to display the IPv6 neighbor adjacency table:
1070  * @cliexstart{show ip6 neighbors}
1071  * Time Address Flags Link layer Interface
1072  * 34.0910 ::a:1:1:0:7 02:fe:6a:07:39:6f GigabitEthernet2/0/0
1073  * 173.2916 ::b:5:1:c:2 02:fe:50:62:3a:94 GigabitEthernet2/0/0
1074  * 886.6654 ::1:1:c:0:9 S 02:fe:e4:45:27:5b GigabitEthernet3/0/0
1075  * @cliexend
1076  * Example of how to display the IPv6 neighbor adjacency table for given interface:
1077  * @cliexstart{show ip6 neighbors GigabitEthernet2/0/0}
1078  * Time Address Flags Link layer Interface
1079  * 34.0910 ::a:1:1:0:7 02:fe:6a:07:39:6f GigabitEthernet2/0/0
1080  * 173.2916 ::b:5:1:c:2 02:fe:50:62:3a:94 GigabitEthernet2/0/0
1081  * @cliexend
1082 ?*/
1083 /* *INDENT-OFF* */
1084 VLIB_CLI_COMMAND (show_ip6_neighbors_command, static) = {
1085  .path = "show ip6 neighbors",
1086  .function = show_ip6_neighbors,
1087  .short_help = "show ip6 neighbors [<interface>]",
1088 };
1089 /* *INDENT-ON* */
1090 
1091 static clib_error_t *
1092 set_ip6_neighbor (vlib_main_t * vm,
1093  unformat_input_t * input, vlib_cli_command_t * cmd)
1094 {
1095  ip_neighbor_flags_t flags = IP_NEIGHBOR_FLAG_NONE;
1096  vnet_main_t *vnm = vnet_get_main ();
1097  ip6_address_t addr;
1098  mac_address_t mac;
1099  int addr_valid = 0;
1100  int is_del = 0;
1101  u32 sw_if_index;
1102 
1103  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1104  {
1105  /* intfc, ip6-address, mac-address */
1106  if (unformat (input, "%U %U %U",
1107  unformat_vnet_sw_interface, vnm, &sw_if_index,
1108  unformat_ip6_address, &addr,
1109  unformat_mac_address_t, &mac))
1110  addr_valid = 1;
1111 
1112  else if (unformat (input, "delete") || unformat (input, "del"))
1113  is_del = 1;
1114  else if (unformat (input, "static"))
1115  flags |= IP_NEIGHBOR_FLAG_STATIC;
1116  else if (unformat (input, "no-fib-entry"))
1117  flags |= IP_NEIGHBOR_FLAG_NO_FIB_ENTRY;
1118  else
1119  break;
1120  }
1121 
1122  if (!addr_valid)
1123  return clib_error_return (0, "Missing interface, ip6 or hw address");
1124 
1125  if (!is_del)
1126  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index, &addr, &mac, flags);
1127  else
1128  vnet_unset_ip6_ethernet_neighbor (vm, sw_if_index, &addr);
1129  return 0;
1130 }
1131 
1132 /*?
1133  * This command is used to manually add an entry to the IPv6 neighbor
1134  * adjacency table. Optionally, the entry can be added as static. It is
1135  * also used to remove an entry from the table. Use the '<em>show ip6
1136  * neighbors</em>' command to display all learned and manually entered entries.
1137  *
1138  * @cliexpar
1139  * Example of how to add a static entry to the IPv6 neighbor adjacency table:
1140  * @cliexcmd{set ip6 neighbor GigabitEthernet2/0/0 ::1:1:c:0:9 02:fe:e4:45:27:5b static}
1141  * Example of how to delete an entry from the IPv6 neighbor adjacency table:
1142  * @cliexcmd{set ip6 neighbor del GigabitEthernet2/0/0 ::1:1:c:0:9 02:fe:e4:45:27:5b}
1143 ?*/
1144 /* *INDENT-OFF* */
1145 VLIB_CLI_COMMAND (set_ip6_neighbor_command, static) =
1146 {
1147  .path = "set ip6 neighbor",
1148  .function = set_ip6_neighbor,
1149  .short_help = "set ip6 neighbor [del] <interface> <ip6-address> <mac-address> [static]",
1150 };
1151 /* *INDENT-ON* */
1152 
1153 typedef enum
1154 {
1155  ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP,
1156  ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY,
1157  ICMP6_NEIGHBOR_SOLICITATION_N_NEXT,
1158 } icmp6_neighbor_solicitation_or_advertisement_next_t;
1159 
1160 static_always_inline uword
1161 icmp6_neighbor_solicitation_or_advertisement (vlib_main_t * vm,
1162  vlib_node_runtime_t * node,
1163  vlib_frame_t * frame,
1164  uword is_solicitation)
1165 {
1166  vnet_main_t *vnm = vnet_get_main ();
1167  ip6_main_t *im = &ip6_main;
1168  uword n_packets = frame->n_vectors;
1169  u32 *from, *to_next;
1170  u32 n_left_from, n_left_to_next, next_index, n_advertisements_sent;
1171  icmp6_neighbor_discovery_option_type_t option_type;
1172  vlib_node_runtime_t *error_node =
1173  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1174  int bogus_length;
1175 
1176  from = vlib_frame_vector_args (frame);
1177  n_left_from = n_packets;
1178  next_index = node->cached_next_index;
1179 
1180  if (node->flags & VLIB_NODE_FLAG_TRACE)
1181  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1182  /* stride */ 1,
1183  sizeof (icmp6_input_trace_t));
1184 
1185  option_type =
1186  (is_solicitation
1187  ? ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address
1188  : ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address);
1189  n_advertisements_sent = 0;
1190 
1191  while (n_left_from > 0)
1192  {
1193  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1194 
1195  while (n_left_from > 0 && n_left_to_next > 0)
1196  {
1197  vlib_buffer_t *p0;
1198  ip6_header_t *ip0;
1199  icmp6_neighbor_solicitation_or_advertisement_header_t *h0;
1200  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *o0;
1201  u32 bi0, options_len0, sw_if_index0, next0, error0;
1202  u32 ip6_sadd_link_local, ip6_sadd_unspecified;
1203  int is_rewrite0;
1204  u32 ni0;
1205 
1206  bi0 = to_next[0] = from[0];
1207 
1208  from += 1;
1209  to_next += 1;
1210  n_left_from -= 1;
1211  n_left_to_next -= 1;
1212 
1213  p0 = vlib_get_buffer (vm, bi0);
1214  ip0 = vlib_buffer_get_current (p0);
1215  h0 = ip6_next_header (ip0);
1216  options_len0 =
1217  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1218 
1219  error0 = ICMP6_ERROR_NONE;
1220  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1221  ip6_sadd_link_local =
1222  ip6_address_is_link_local_unicast (&ip0->src_address);
1223  ip6_sadd_unspecified =
1224  ip6_address_is_unspecified (&ip0->src_address);
1225 
1226  /* Check that source address is unspecified, link-local or else on-link. */
1227  if (!ip6_sadd_unspecified && !ip6_sadd_link_local)
1228  {
1229  u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
1230 
1231  if (ADJ_INDEX_INVALID != src_adj_index0)
1232  {
1233  ip_adjacency_t *adj0 = adj_get (src_adj_index0);
1234 
1235  /* Allow all realistic-looking rewrite adjacencies to pass */
1236  ni0 = adj0->lookup_next_index;
1237  is_rewrite0 = (ni0 >= IP_LOOKUP_NEXT_ARP) &&
1238  (ni0 < IP6_LOOKUP_N_NEXT);
1239 
1240  error0 = ((adj0->rewrite_header.sw_if_index != sw_if_index0
1241  || !is_rewrite0)
1242  ?
1243  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_NOT_ON_LINK
1244  : error0);
1245  }
1246  else
1247  {
1248  error0 =
1249  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_NOT_ON_LINK;
1250  }
1251  }
1252 
1253  o0 = (void *) (h0 + 1);
1254  o0 = ((options_len0 == 8 && o0->header.type == option_type
1255  && o0->header.n_data_u64s == 1) ? o0 : 0);
1256 
1257  /* If src address unspecified or link local, donot learn neighbor MAC */
1258  if (PREDICT_TRUE (error0 == ICMP6_ERROR_NONE && o0 != 0 &&
1259  !ip6_sadd_unspecified))
1260  {
1261  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index0,
1262  is_solicitation ?
1263  &ip0->src_address :
1264  &h0->target_address,
1265  (mac_address_t *)
1266  o0->ethernet_address,
1267  IP_NEIGHBOR_FLAG_NONE);
1268  }
1269 
1270  if (is_solicitation && error0 == ICMP6_ERROR_NONE)
1271  {
1272  /* Check that target address is local to this router. */
1273  fib_node_index_t fei;
1274  u32 fib_index;
1275 
1276  fib_index =
1277  ip6_fib_table_get_index_for_sw_if_index (sw_if_index0);
1278 
1279  if (~0 == fib_index)
1280  {
1281  error0 = ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1282  }
1283  else
1284  {
1285  if (ip6_address_is_link_local_unicast (&h0->target_address))
1286  {
1287  fei = ip6_fib_table_lookup_exact_match
1288  (ip6_ll_fib_get (sw_if_index0),
1289  &h0->target_address, 128);
1290  }
1291  else
1292  {
1293  fei = ip6_fib_table_lookup_exact_match (fib_index,
1294  &h0->target_address,
1295  128);
1296  }
1297 
1298  if (FIB_NODE_INDEX_INVALID == fei)
1299  {
1300  /* The target address is not in the FIB */
1301  error0 =
1302  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1303  }
1304  else
1305  {
1306  if (FIB_ENTRY_FLAG_LOCAL &
1307  fib_entry_get_flags_for_source (fei,
1308  FIB_SOURCE_INTERFACE))
1309  {
1310  /* It's an address that belongs to one of our interfaces
1311  * that's good. */
1312  }
1313  else
1314  if (fib_entry_is_sourced
1315  (fei, FIB_SOURCE_IP6_ND_PROXY) ||
1316  fib_entry_is_sourced (fei, FIB_SOURCE_IP6_ND))
1317  {
1318  /* The address was added by IPv6 Proxy ND config.
1319  * We should only respond to these if the NS arrived on
1320  * the link that has a matching covering prefix */
1321  }
1322  else
1323  {
1324  error0 =
1325  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1326  }
1327  }
1328  }
1329  }
1330 
1331  if (is_solicitation)
1332  next0 = (error0 != ICMP6_ERROR_NONE
1333  ? ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP
1334  : ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY);
1335  else
1336  {
1337  next0 = 0;
1338  error0 = error0 == ICMP6_ERROR_NONE ?
1339  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_RX : error0;
1340  }
1341 
1342  if (is_solicitation && error0 == ICMP6_ERROR_NONE)
1343  {
1344  vnet_sw_interface_t *sw_if0;
1345  ethernet_interface_t *eth_if0;
1346  ethernet_header_t *eth0;
1347 
1348  /* dst address is either source address or the all-nodes mcast addr */
1349  if (!ip6_sadd_unspecified)
1350  ip0->dst_address = ip0->src_address;
1351  else
1352  ip6_set_reserved_multicast_address (&ip0->dst_address,
1353  IP6_MULTICAST_SCOPE_link_local,
1354  IP6_MULTICAST_GROUP_ID_all_hosts);
1355 
1356  ip0->src_address = h0->target_address;
1357  ip0->hop_limit = 255;
1358  h0->icmp.type = ICMP6_neighbor_advertisement;
1359 
1360  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1361  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1362  eth_if0 =
1363  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1364  if (eth_if0 && o0)
1365  {
1366  clib_memcpy (o0->ethernet_address, eth_if0->address, 6);
1367  o0->header.type =
1368  ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
1369  }
1370 
1371  h0->advertisement_flags = clib_host_to_net_u32
1372  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
1373  | ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
1374 
1375  h0->icmp.checksum = 0;
1376  h0->icmp.checksum =
1377  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0,
1378  &bogus_length);
1379  ASSERT (bogus_length == 0);
1380 
1381  /* Reuse current MAC header, copy SMAC to DMAC and
1382  * interface MAC to SMAC */
1383  vlib_buffer_advance (p0, -ethernet_buffer_header_size (p0));
1384  eth0 = vlib_buffer_get_current (p0);
1385  clib_memcpy (eth0->dst_address, eth0->src_address, 6);
1386  if (eth_if0)
1387  clib_memcpy (eth0->src_address, eth_if0->address, 6);
1388 
1389  /* Setup input and output sw_if_index for packet */
1390  ASSERT (vnet_buffer (p0)->sw_if_index[VLIB_RX] == sw_if_index0);
1391  vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0;
1392  vnet_buffer (p0)->sw_if_index[VLIB_RX] =
1393  vnet_main.local_interface_sw_if_index;
1394 
1395  n_advertisements_sent++;
1396  }
1397 
1398  p0->error = error_node->errors[error0];
1399 
1400  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1401  to_next, n_left_to_next,
1402  bi0, next0);
1403  }
1404 
1405  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1406  }
1407 
1408  /* Account for advertisements sent. */
1409  vlib_error_count (vm, error_node->node_index,
1410  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_TX,
1411  n_advertisements_sent);
1412 
1413  return frame->n_vectors;
1414 }
1415 
1416 /* for "syslogging" - use elog for now */
1417 #define foreach_log_level \
1418  _ (DEBUG, "DEBUG") \
1419  _ (INFO, "INFORMATION") \
1420  _ (NOTICE, "NOTICE") \
1421  _ (WARNING, "WARNING") \
1422  _ (ERR, "ERROR") \
1423  _ (CRIT, "CRITICAL") \
1424  _ (ALERT, "ALERT") \
1425  _ (EMERG, "EMERGENCY")
1426 
1427 typedef enum
1428 {
1429 #define _(f,s) LOG_##f,
1430  foreach_log_level
1431 #undef _
1432 } log_level_t;
1433 
1434 static char *log_level_strings[] = {
1435 #define _(f,s) s,
1436  foreach_log_level
1437 #undef _
1438 };
1439 
1440 static int logmask = 1 << LOG_DEBUG;
1441 
1442 static void
1443 ip6_neighbor_syslog (vlib_main_t * vm, int priority, char *fmt, ...)
1444 {
1445  /* just use elog for now */
1446  u8 *what;
1447  va_list va;
1448 
1449  if ((priority > LOG_EMERG) || !(logmask & (1 << priority)))
1450  return;
1451 
1452  va_start (va, fmt);
1453  if (fmt)
1454  {
1455  what = va_format (0, fmt, &va);
1456 
1457  ELOG_TYPE_DECLARE (e) =
1458  {
1459  .format = "ip6 nd: (%s): %s",.format_args = "T4T4",};
1460  struct
1461  {
1462  u32 s[2];
1463  } *ed;
1464  ed = ELOG_DATA (&vm->elog_main, e);
1465  ed->s[0] = elog_string (&vm->elog_main, log_level_strings[priority]);
1466  ed->s[1] = elog_string (&vm->elog_main, (char *) what);
1467  }
1468  va_end (va);
1469  return;
1470 }
1471 
1472 clib_error_t *
1473 call_ip6_neighbor_callbacks (void *data,
1474  _vnet_ip6_neighbor_function_list_elt_t * elt)
1475 {
1476  clib_error_t *error = 0;
1477 
1478  while (elt)
1479  {
1480  error = elt->fp (data);
1481  if (error)
1482  return error;
1483  elt = elt->next_ip6_neighbor_function;
1484  }
1485 
1486  return error;
1487 }
1488 
1489 /* ipv6 neighbor discovery - router advertisements */
1490 typedef enum
1491 {
1492  ICMP6_ROUTER_SOLICITATION_NEXT_DROP,
1493  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW,
1494  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX,
1495  ICMP6_ROUTER_SOLICITATION_N_NEXT,
1496 } icmp6_router_solicitation_or_advertisement_next_t;
1497 
1498 static_always_inline uword
1499 icmp6_router_solicitation (vlib_main_t * vm,
1500  vlib_node_runtime_t * node, vlib_frame_t * frame)
1501 {
1502  vnet_main_t *vnm = vnet_get_main ();
1503  ip6_main_t *im = &ip6_main;
1504  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1505  uword n_packets = frame->n_vectors;
1506  u32 *from, *to_next;
1507  u32 n_left_from, n_left_to_next, next_index;
1508  u32 n_advertisements_sent = 0;
1509  int bogus_length;
1510 
1511  icmp6_neighbor_discovery_option_type_t option_type;
1512 
1513  vlib_node_runtime_t *error_node =
1514  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1515 
1516  from = vlib_frame_vector_args (frame);
1517  n_left_from = n_packets;
1518  next_index = node->cached_next_index;
1519 
1520  if (node->flags & VLIB_NODE_FLAG_TRACE)
1521  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1522  /* stride */ 1,
1523  sizeof (icmp6_input_trace_t));
1524 
1525  /* source may append his LL address */
1526  option_type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
1527 
1528  while (n_left_from > 0)
1529  {
1530  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1531 
1532  while (n_left_from > 0 && n_left_to_next > 0)
1533  {
1534  vlib_buffer_t *p0;
1535  ip6_header_t *ip0;
1536  ip6_radv_t *radv_info = 0;
1537 
1538  icmp6_neighbor_discovery_header_t *h0;
1539  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *o0;
1540 
1541  u32 bi0, options_len0, sw_if_index0, next0, error0;
1542  u32 is_solicitation = 1, is_dropped = 0;
1543  u32 is_unspecified, is_link_local;
1544 
1545  bi0 = to_next[0] = from[0];
1546 
1547  from += 1;
1548  to_next += 1;
1549  n_left_from -= 1;
1550  n_left_to_next -= 1;
1551 
1552  p0 = vlib_get_buffer (vm, bi0);
1553  ip0 = vlib_buffer_get_current (p0);
1554  h0 = ip6_next_header (ip0);
1555  options_len0 =
1556  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1557  is_unspecified = ip6_address_is_unspecified (&ip0->src_address);
1558  is_link_local =
1559  ip6_address_is_link_local_unicast (&ip0->src_address);
1560 
1561  error0 = ICMP6_ERROR_NONE;
1562  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1563 
1564  /* check if solicitation (not from nd_timer node) */
1565  if (ip6_address_is_unspecified (&ip0->dst_address))
1566  is_solicitation = 0;
1567 
1568  /* Check that source address is unspecified, link-local or else on-link. */
1569  if (!is_unspecified && !is_link_local)
1570  {
1571  u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
1572 
1573  if (ADJ_INDEX_INVALID != src_adj_index0)
1574  {
1575  ip_adjacency_t *adj0 = adj_get (src_adj_index0);
1576 
1577  error0 = (adj0->rewrite_header.sw_if_index != sw_if_index0
1578  ?
1579  ICMP6_ERROR_ROUTER_SOLICITATION_SOURCE_NOT_ON_LINK
1580  : error0);
1581  }
1582  else
1583  {
1584  error0 = ICMP6_ERROR_ROUTER_SOLICITATION_SOURCE_NOT_ON_LINK;
1585  }
1586  }
1587 
1588  /* check for source LL option and process */
1589  o0 = (void *) (h0 + 1);
1590  o0 = ((options_len0 == 8
1591  && o0->header.type == option_type
1592  && o0->header.n_data_u64s == 1) ? o0 : 0);
1593 
1594  /* if src address unspecified IGNORE any options */
1595  if (PREDICT_TRUE (error0 == ICMP6_ERROR_NONE && o0 != 0 &&
1596  !is_unspecified && !is_link_local))
1597  {
1598  vnet_set_ip6_ethernet_neighbor
1599  (vm, sw_if_index0,
1600  &ip0->src_address,
1601  (mac_address_t *) o0->ethernet_address,
1602  IP_NEIGHBOR_FLAG_NONE);
1603  }
1604 
1605  /* default is to drop */
1606  next0 = ICMP6_ROUTER_SOLICITATION_NEXT_DROP;
1607 
1608  if (error0 == ICMP6_ERROR_NONE)
1609  {
1610  vnet_sw_interface_t *sw_if0;
1611  ethernet_interface_t *eth_if0;
1612  u32 adj_index0;
1613 
1614  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1615  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1616  eth_if0 =
1617  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1618 
1619  /* only support ethernet interface type for now */
1620  error0 =
1621  (!eth_if0) ? ICMP6_ERROR_ROUTER_SOLICITATION_UNSUPPORTED_INTF
1622  : error0;
1623 
1624  if (error0 == ICMP6_ERROR_NONE)
1625  {
1626  u32 ri;
1627 
1628  /* adjust the sizeof the buffer to just include the ipv6 header */
1629  p0->current_length -=
1630  (options_len0 +
1631  sizeof (icmp6_neighbor_discovery_header_t));
1632 
1633  /* look up the radv_t information for this interface */
1634  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) >
1635  sw_if_index0)
1636  {
1637  ri =
1638  nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
1639 
1640  if (ri != ~0)
1641  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
1642  }
1643 
1644  error0 =
1645  ((!radv_info) ?
1646  ICMP6_ERROR_ROUTER_SOLICITATION_RADV_NOT_CONFIG :
1647  error0);
1648 
1649  if (error0 == ICMP6_ERROR_NONE)
1650  {
1651  f64 now = vlib_time_now (vm);
1652 
1653  /* for solicited adverts - need to rate limit */
1654  if (is_solicitation)
1655  {
1656  if (0 != radv_info->last_radv_time &&
1657  (now - radv_info->last_radv_time) <
1658  MIN_DELAY_BETWEEN_RAS)
1659  is_dropped = 1;
1660  else
1661  radv_info->last_radv_time = now;
1662  }
1663 
1664  /* send now */
1665  icmp6_router_advertisement_header_t rh;
1666 
1667  rh.icmp.type = ICMP6_router_advertisement;
1668  rh.icmp.code = 0;
1669  rh.icmp.checksum = 0;
1670 
1671  rh.current_hop_limit = radv_info->curr_hop_limit;
1672  rh.router_lifetime_in_sec =
1673  clib_host_to_net_u16
1674  (radv_info->adv_router_lifetime_in_sec);
1675  rh.
1676  time_in_msec_between_retransmitted_neighbor_solicitations
1677  =
1678  clib_host_to_net_u32 (radv_info->
1679  adv_time_in_msec_between_retransmitted_neighbor_solicitations);
1680  rh.neighbor_reachable_time_in_msec =
1681  clib_host_to_net_u32 (radv_info->
1682  adv_neighbor_reachable_time_in_msec);
1683 
1684  rh.flags =
1685  (radv_info->adv_managed_flag) ?
1686  ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP :
1687  0;
1688  rh.flags |=
1689  ((radv_info->adv_other_flag) ?
1690  ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP :
1691  0);
1692 
1693 
1694  u16 payload_length =
1695  sizeof (icmp6_router_advertisement_header_t);
1696 
1697  if (vlib_buffer_add_data
1698  (vm, &bi0, (void *) &rh,
1699  sizeof (icmp6_router_advertisement_header_t)))
1700  {
1701  /* buffer allocation failed, drop the pkt */
1702  error0 = ICMP6_ERROR_ALLOC_FAILURE;
1703  goto drop0;
1704  }
1705 
1706  if (radv_info->adv_link_layer_address)
1707  {
1708  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
1709  h;
1710 
1711  h.header.type =
1712  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
1713  h.header.n_data_u64s = 1;
1714 
1715  /* copy ll address */
1716  clib_memcpy (&h.ethernet_address[0],
1717  eth_if0->address, 6);
1718 
1719  if (vlib_buffer_add_data
1720  (vm, &bi0, (void *) &h,
1721  sizeof
1722  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t)))
1723  {
1724  error0 = ICMP6_ERROR_ALLOC_FAILURE;
1725  goto drop0;
1726  }
1727 
1728  payload_length +=
1729  sizeof
1730  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t);
1731  }
1732 
1733  /* add MTU option */
1734  if (radv_info->adv_link_mtu)
1735  {
1736  icmp6_neighbor_discovery_mtu_option_t h;
1737 
1738  h.unused = 0;
1739  h.mtu =
1740  clib_host_to_net_u32 (radv_info->adv_link_mtu);
1741  h.header.type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_mtu;
1742  h.header.n_data_u64s = 1;
1743 
1744  payload_length +=
1745  sizeof (icmp6_neighbor_discovery_mtu_option_t);
1746 
1747  if (vlib_buffer_add_data
1748  (vm, &bi0, (void *) &h,
1749  sizeof
1750  (icmp6_neighbor_discovery_mtu_option_t)))
1751  {
1752  error0 = ICMP6_ERROR_ALLOC_FAILURE;
1753  goto drop0;
1754  }
1755  }
1756 
1757  /* add advertised prefix options */
1758  ip6_radv_prefix_t *pr_info;
1759 
1760  /* *INDENT-OFF* */
1761  pool_foreach (pr_info, radv_info->adv_prefixes_pool,
1762  ({
1763  if(pr_info->enabled &&
1764  (!pr_info->decrement_lifetime_flag
1765  || (pr_info->pref_lifetime_expires >0)))
1766  {
1767  /* advertise this prefix */
1768  icmp6_neighbor_discovery_prefix_information_option_t h;
1769 
1770  h.header.type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_prefix_information;
1771  h.header.n_data_u64s = (sizeof(icmp6_neighbor_discovery_prefix_information_option_t) >> 3);
1772 
1773  h.dst_address_length = pr_info->prefix_len;
1774 
1775  h.flags = (pr_info->adv_on_link_flag) ? ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_FLAG_ON_LINK : 0;
1776  h.flags |= (pr_info->adv_autonomous_flag) ? ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_AUTO : 0;
1777 
1778  if(radv_info->cease_radv && pr_info->deprecated_prefix_flag)
1779  {
1780  h.valid_time = clib_host_to_net_u32(MIN_ADV_VALID_LIFETIME);
1781  h.preferred_time = 0;
1782  }
1783  else
1784  {
1785  if(pr_info->decrement_lifetime_flag)
1786  {
1787  pr_info->adv_valid_lifetime_in_secs = ((pr_info->valid_lifetime_expires > now)) ?
1788  (pr_info->valid_lifetime_expires - now) : 0;
1789 
1790  pr_info->adv_pref_lifetime_in_secs = ((pr_info->pref_lifetime_expires > now)) ?
1791  (pr_info->pref_lifetime_expires - now) : 0;
1792  }
1793 
1794  h.valid_time = clib_host_to_net_u32(pr_info->adv_valid_lifetime_in_secs);
1795  h.preferred_time = clib_host_to_net_u32(pr_info->adv_pref_lifetime_in_secs) ;
1796  }
1797  h.unused = 0;
1798 
1799  clib_memcpy(&h.dst_address, &pr_info->prefix, sizeof(ip6_address_t));
1800 
1801  payload_length += sizeof( icmp6_neighbor_discovery_prefix_information_option_t);
1802 
1803  if (vlib_buffer_add_data
1804  (vm, &bi0, (void *)&h,
1805  sizeof(icmp6_neighbor_discovery_prefix_information_option_t)))
1806  {
1807  error0 = ICMP6_ERROR_ALLOC_FAILURE;
1808  goto drop0;
1809  }
1810 
1811  }
1812  }));
1813  /* *INDENT-ON* */
1814 
1815  /* add additional options before here */
1816 
1817  /* finish building the router advertisement... */
1818  if (!is_unspecified && radv_info->send_unicast)
1819  {
1820  ip0->dst_address = ip0->src_address;
1821  }
1822  else
1823  {
1824  /* target address is all-nodes mcast addr */
1825  ip6_set_reserved_multicast_address
1826  (&ip0->dst_address,
1827  IP6_MULTICAST_SCOPE_link_local,
1828  IP6_MULTICAST_GROUP_ID_all_hosts);
1829  }
1830 
1831  /* source address MUST be the link-local address */
1832  ip0->src_address = radv_info->link_local_address;
1833 
1834  ip0->hop_limit = 255;
1835  ip0->payload_length =
1836  clib_host_to_net_u16 (payload_length);
1837 
1838  icmp6_router_advertisement_header_t *rh0 =
1839  (icmp6_router_advertisement_header_t *) (ip0 + 1);
1840  rh0->icmp.checksum =
1841  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0,
1842  &bogus_length);
1843  ASSERT (bogus_length == 0);
1844 
1845  /* setup output if and adjacency */
1846  vnet_buffer (p0)->sw_if_index[VLIB_RX] =
1847  vnet_main.local_interface_sw_if_index;
1848 
1849  if (is_solicitation)
1850  {
1851  ethernet_header_t *eth0;
1852  /* Reuse current MAC header, copy SMAC to DMAC and
1853  * interface MAC to SMAC */
1854  vlib_buffer_reset (p0);
1855  eth0 = vlib_buffer_get_current (p0);
1856  clib_memcpy (eth0->dst_address, eth0->src_address,
1857  6);
1858  clib_memcpy (eth0->src_address, eth_if0->address,
1859  6);
1860  next0 =
1861  is_dropped ? next0 :
1862  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX;
1863  vnet_buffer (p0)->sw_if_index[VLIB_TX] =
1864  sw_if_index0;
1865  }
1866  else
1867  {
1868  adj_index0 = radv_info->mcast_adj_index;
1869  if (adj_index0 == 0)
1870  error0 = ICMP6_ERROR_DST_LOOKUP_MISS;
1871  else
1872  {
1873  next0 =
1874  is_dropped ? next0 :
1875  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW;
1876  vnet_buffer (p0)->ip.adj_index[VLIB_TX] =
1877  adj_index0;
1878  }
1879  }
1880  p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
1881 
1882  radv_info->n_solicitations_dropped += is_dropped;
1883  radv_info->n_solicitations_rcvd += is_solicitation;
1884 
1885  if ((error0 == ICMP6_ERROR_NONE) && !is_dropped)
1886  {
1887  radv_info->n_advertisements_sent++;
1888  n_advertisements_sent++;
1889  }
1890  }
1891  }
1892  }
1893 
1894  drop0:
1895  p0->error = error_node->errors[error0];
1896 
1897  if (error0 != ICMP6_ERROR_NONE)
1898  vlib_error_count (vm, error_node->node_index, error0, 1);
1899 
1900  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1901  to_next, n_left_to_next,
1902  bi0, next0);
1903 
1904  }
1905 
1906  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1907  }
1908 
1909  /* Account for router advertisements sent. */
1910  vlib_error_count (vm, error_node->node_index,
1911  ICMP6_ERROR_ROUTER_ADVERTISEMENTS_TX,
1912  n_advertisements_sent);
1913 
1914  return frame->n_vectors;
1915 }
1916 
1917  /* validate advertised info for consistancy (see RFC-4861 section 6.2.7) - log any inconsistencies, packet will always be dropped */
1918 static_always_inline uword
1919 icmp6_router_advertisement (vlib_main_t * vm,
1920  vlib_node_runtime_t * node, vlib_frame_t * frame)
1921 {
1922  vnet_main_t *vnm = vnet_get_main ();
1923  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1924  uword n_packets = frame->n_vectors;
1925  u32 *from, *to_next;
1926  u32 n_left_from, n_left_to_next, next_index;
1927  u32 n_advertisements_rcvd = 0;
1928 
1929  vlib_node_runtime_t *error_node =
1930  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1931 
1932  from = vlib_frame_vector_args (frame);
1933  n_left_from = n_packets;
1934  next_index = node->cached_next_index;
1935 
1936  if (node->flags & VLIB_NODE_FLAG_TRACE)
1937  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1938  /* stride */ 1,
1939  sizeof (icmp6_input_trace_t));
1940 
1941  while (n_left_from > 0)
1942  {
1943  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1944 
1945  while (n_left_from > 0 && n_left_to_next > 0)
1946  {
1947  vlib_buffer_t *p0;
1948  ip6_header_t *ip0;
1949  ip6_radv_t *radv_info = 0;
1950  icmp6_router_advertisement_header_t *h0;
1951  u32 bi0, options_len0, sw_if_index0, next0, error0;
1952 
1953  bi0 = to_next[0] = from[0];
1954 
1955  from += 1;
1956  to_next += 1;
1957  n_left_from -= 1;
1958  n_left_to_next -= 1;
1959 
1960  p0 = vlib_get_buffer (vm, bi0);
1961  ip0 = vlib_buffer_get_current (p0);
1962  h0 = ip6_next_header (ip0);
1963  options_len0 =
1964  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1965 
1966  error0 = ICMP6_ERROR_NONE;
1967  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1968 
1969  /* Check that source address is link-local */
1970  error0 = (!ip6_address_is_link_local_unicast (&ip0->src_address)) ?
1971  ICMP6_ERROR_ROUTER_ADVERTISEMENT_SOURCE_NOT_LINK_LOCAL : error0;
1972 
1973  /* default is to drop */
1974  next0 = ICMP6_ROUTER_SOLICITATION_NEXT_DROP;
1975 
1976  n_advertisements_rcvd++;
1977 
1978  if (error0 == ICMP6_ERROR_NONE)
1979  {
1980  vnet_sw_interface_t *sw_if0;
1981  ethernet_interface_t *eth_if0;
1982 
1983  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1984  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1985  eth_if0 =
1986  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1987 
1988  /* only support ethernet interface type for now */
1989  error0 =
1990  (!eth_if0) ? ICMP6_ERROR_ROUTER_SOLICITATION_UNSUPPORTED_INTF
1991  : error0;
1992 
1993  if (error0 == ICMP6_ERROR_NONE)
1994  {
1995  u32 ri;
1996 
1997  /* look up the radv_t information for this interface */
1998  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) >
1999  sw_if_index0)
2000  {
2001  ri =
2002  nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
2003 
2004  if (ri != ~0)
2005  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
2006  }
2007 
2008  error0 =
2009  ((!radv_info) ?
2010  ICMP6_ERROR_ROUTER_SOLICITATION_RADV_NOT_CONFIG :
2011  error0);
2012 
2013  if (error0 == ICMP6_ERROR_NONE)
2014  {
2015  radv_info->keep_sending_rs = 0;
2016 
2017  ra_report_t r;
2018 
2019  r.sw_if_index = sw_if_index0;
2020  memcpy (&r.router_address, &ip0->src_address, 16);
2021  r.current_hop_limit = h0->current_hop_limit;
2022  r.flags = h0->flags;
2023  r.router_lifetime_in_sec =
2024  clib_net_to_host_u16 (h0->router_lifetime_in_sec);
2025  r.neighbor_reachable_time_in_msec =
2026  clib_net_to_host_u32
2027  (h0->neighbor_reachable_time_in_msec);
2028  r.time_in_msec_between_retransmitted_neighbor_solicitations = clib_net_to_host_u32 (h0->time_in_msec_between_retransmitted_neighbor_solicitations);
2029  r.prefixes = 0;
2030 
2031  /* validate advertised information */
2032  if ((h0->current_hop_limit && radv_info->curr_hop_limit)
2033  && (h0->current_hop_limit !=
2034  radv_info->curr_hop_limit))
2035  {
2036  ip6_neighbor_syslog (vm, LOG_WARNING,
2037  "our AdvCurHopLimit on %U doesn't agree with %U",
2038  format_vnet_sw_if_index_name,
2039  vnm, sw_if_index0,
2040  format_ip6_address,
2041  &ip0->src_address);
2042  }
2043 
2044  if ((h0->flags &
2045  ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP)
2046  != radv_info->adv_managed_flag)
2047  {
2048  ip6_neighbor_syslog (vm, LOG_WARNING,
2049  "our AdvManagedFlag on %U doesn't agree with %U",
2050  format_vnet_sw_if_index_name,
2051  vnm, sw_if_index0,
2052  format_ip6_address,
2053  &ip0->src_address);
2054  }
2055 
2056  if ((h0->flags &
2057  ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP)
2058  != radv_info->adv_other_flag)
2059  {
2060  ip6_neighbor_syslog (vm, LOG_WARNING,
2061  "our AdvOtherConfigFlag on %U doesn't agree with %U",
2062  format_vnet_sw_if_index_name,
2063  vnm, sw_if_index0,
2064  format_ip6_address,
2065  &ip0->src_address);
2066  }
2067 
2068  if ((h0->
2069  time_in_msec_between_retransmitted_neighbor_solicitations
2070  && radv_info->
2071  adv_time_in_msec_between_retransmitted_neighbor_solicitations)
2072  && (h0->
2073  time_in_msec_between_retransmitted_neighbor_solicitations
2074  !=
2075  clib_host_to_net_u32 (radv_info->
2076  adv_time_in_msec_between_retransmitted_neighbor_solicitations)))
2077  {
2078  ip6_neighbor_syslog (vm, LOG_WARNING,
2079  "our AdvRetransTimer on %U doesn't agree with %U",
2080  format_vnet_sw_if_index_name,
2081  vnm, sw_if_index0,
2082  format_ip6_address,
2083  &ip0->src_address);
2084  }
2085 
2086  if ((h0->neighbor_reachable_time_in_msec &&
2087  radv_info->adv_neighbor_reachable_time_in_msec) &&
2088  (h0->neighbor_reachable_time_in_msec !=
2089  clib_host_to_net_u32
2090  (radv_info->adv_neighbor_reachable_time_in_msec)))
2091  {
2092  ip6_neighbor_syslog (vm, LOG_WARNING,
2093  "our AdvReachableTime on %U doesn't agree with %U",
2094  format_vnet_sw_if_index_name,
2095  vnm, sw_if_index0,
2096  format_ip6_address,
2097  &ip0->src_address);
2098  }
2099 
2100  /* check for MTU or prefix options or .. */
2101  u8 *opt_hdr = (u8 *) (h0 + 1);
2102  while (options_len0 > 0)
2103  {
2104  icmp6_neighbor_discovery_option_header_t *o0 =
2105  (icmp6_neighbor_discovery_option_header_t *)
2106  opt_hdr;
2107  int opt_len = o0->n_data_u64s << 3;
2108  icmp6_neighbor_discovery_option_type_t option_type =
2109  o0->type;
2110 
2111  if (options_len0 < 2)
2112  {
2113  ip6_neighbor_syslog (vm, LOG_ERR,
2114  "malformed RA packet on %U from %U",
2115  format_vnet_sw_if_index_name,
2116  vnm, sw_if_index0,
2117  format_ip6_address,
2118  &ip0->src_address);
2119  break;
2120  }
2121 
2122  if (opt_len == 0)
2123  {
2124  ip6_neighbor_syslog (vm, LOG_ERR,
2125  " zero length option in RA on %U from %U",
2126  format_vnet_sw_if_index_name,
2127  vnm, sw_if_index0,
2128  format_ip6_address,
2129  &ip0->src_address);
2130  break;
2131  }
2132  else if (opt_len > options_len0)
2133  {
2134  ip6_neighbor_syslog (vm, LOG_ERR,
2135  "option length in RA packet greater than total length on %U from %U",
2136  format_vnet_sw_if_index_name,
2137  vnm, sw_if_index0,
2138  format_ip6_address,
2139  &ip0->src_address);
2140  break;
2141  }
2142 
2143  options_len0 -= opt_len;
2144  opt_hdr += opt_len;
2145 
2146  switch (option_type)
2147  {
2148  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address:
2149  {
2150  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
2151  * h =
2152  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
2153  *) (o0);
2154 
2155  if (opt_len < sizeof (*h))
2156  break;
2157 
2158  memcpy (r.slla, h->ethernet_address, 6);
2159  }
2160  break;
2161 
2162  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_mtu:
2163  {
2164  icmp6_neighbor_discovery_mtu_option_t *h =
2165  (icmp6_neighbor_discovery_mtu_option_t
2166  *) (o0);
2167 
2168  if (opt_len < sizeof (*h))
2169  break;
2170 
2171  r.mtu = clib_net_to_host_u32 (h->mtu);
2172 
2173  if ((h->mtu && radv_info->adv_link_mtu) &&
2174  (h->mtu !=
2175  clib_host_to_net_u32
2176  (radv_info->adv_link_mtu)))
2177  {
2178  ip6_neighbor_syslog (vm, LOG_WARNING,
2179  "our AdvLinkMTU on %U doesn't agree with %U",
2180  format_vnet_sw_if_index_name,
2181  vnm, sw_if_index0,
2182  format_ip6_address,
2183  &ip0->src_address);
2184  }
2185  }
2186  break;
2187 
2188  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_prefix_information:
2189  {
2190  icmp6_neighbor_discovery_prefix_information_option_t
2191  * h =
2192  (icmp6_neighbor_discovery_prefix_information_option_t
2193  *) (o0);
2194 
2195  /* validate advertised prefix options */
2196  ip6_radv_prefix_t *pr_info;
2197  u32 preferred, valid;
2198 
2199  if (opt_len < sizeof (*h))
2200  break;
2201 
2202  vec_validate (r.prefixes,
2203  vec_len (r.prefixes));
2204  ra_report_prefix_info_t *prefix =
2205  vec_elt_at_index (r.prefixes,
2206  vec_len (r.prefixes) - 1);
2207 
2208  preferred =
2209  clib_net_to_host_u32 (h->preferred_time);
2210  valid = clib_net_to_host_u32 (h->valid_time);
2211 
2212  prefix->preferred_time = preferred;
2213  prefix->valid_time = valid;
2214  prefix->flags = h->flags & 0xc0;
2215  prefix->prefix.fp_len = h->dst_address_length;
2216  prefix->prefix.fp_addr.ip6 = h->dst_address;
2217  prefix->prefix.fp_proto = FIB_PROTOCOL_IP6;
2218 
2219  /* look for matching prefix - if we our advertising it, it better be consistant */
2220  /* *INDENT-OFF* */
2221  pool_foreach (pr_info, radv_info->adv_prefixes_pool,
2222  ({
2223 
2224  ip6_address_t mask;
2225  ip6_address_mask_from_width(&mask, pr_info->prefix_len);
2226 
2227  if(pr_info->enabled &&
2228  (pr_info->prefix_len == h->dst_address_length) &&
2229  ip6_address_is_equal_masked (&pr_info->prefix, &h->dst_address, &mask))
2230  {
2231  /* found it */
2232  if(!pr_info->decrement_lifetime_flag &&
2233  valid != pr_info->adv_valid_lifetime_in_secs)
2234  {
2235  ip6_neighbor_syslog(vm, LOG_WARNING,
2236  "our ADV validlifetime on %U for %U does not agree with %U",
2237  format_vnet_sw_if_index_name, vnm, sw_if_index0,format_ip6_address, &pr_info->prefix,
2238  format_ip6_address, &h->dst_address);
2239  }
2240  if(!pr_info->decrement_lifetime_flag &&
2241  preferred != pr_info->adv_pref_lifetime_in_secs)
2242  {
2243  ip6_neighbor_syslog(vm, LOG_WARNING,
2244  "our ADV preferredlifetime on %U for %U does not agree with %U",
2245  format_vnet_sw_if_index_name, vnm, sw_if_index0,format_ip6_address, &pr_info->prefix,
2246  format_ip6_address, &h->dst_address);
2247  }
2248  }
2249  break;
2250  }));
2251  /* *INDENT-ON* */
2252  break;
2253  }
2254  default:
2255  /* skip this one */
2256  break;
2257  }
2258  }
2259  ra_publish (&r);
2260  }
2261  }
2262  }
2263 
2264  p0->error = error_node->errors[error0];
2265 
2266  if (error0 != ICMP6_ERROR_NONE)
2267  vlib_error_count (vm, error_node->node_index, error0, 1);
2268 
2269  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
2270  to_next, n_left_to_next,
2271  bi0, next0);
2272  }
2273 
2274  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
2275  }
2276 
2277  /* Account for router advertisements received. */
2278  vlib_error_count (vm, error_node->node_index,
2279  ICMP6_ERROR_ROUTER_ADVERTISEMENTS_RX,
2280  n_advertisements_rcvd);
2281 
2282  return frame->n_vectors;
2283 }
2284 
2285 static inline f64
2286 random_f64_from_to (f64 from, f64 to)
2287 {
2288  static u32 seed = 0;
2289  static u8 seed_set = 0;
2290  if (!seed_set)
2291  {
2292  seed = random_default_seed ();
2293  seed_set = 1;
2294  }
2295  return random_f64 (&seed) * (to - from) + from;
2296 }
2297 
2298 static inline u8
2299 get_mac_address (u32 sw_if_index, u8 * address)
2300 {
2301  vnet_main_t *vnm = vnet_get_main ();
2302  vnet_hw_interface_t *hw_if = vnet_get_sup_hw_interface (vnm, sw_if_index);
2303  if (!hw_if->hw_address)
2304  return 1;
2305  clib_memcpy (address, hw_if->hw_address, 6);
2306  return 0;
2307 }
2308 
2309 static inline vlib_buffer_t *
2310 create_buffer_for_rs (vlib_main_t * vm, ip6_radv_t * radv_info)
2311 {
2312  u32 bi0;
2313  vlib_buffer_t *p0;
2314  icmp6_router_solicitation_header_t *rh;
2315  u16 payload_length;
2316  int bogus_length;
2317  u32 sw_if_index;
2318 
2319  sw_if_index = radv_info->sw_if_index;
2320 
2321  if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
2322  {
2323  clib_warning ("buffer allocation failure");
2324  return 0;
2325  }
2326 
2327  p0 = vlib_get_buffer (vm, bi0);
2328  VLIB_BUFFER_TRACE_TRAJECTORY_INIT (p0);
2329  p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
2330 
2331  vnet_buffer (p0)->sw_if_index[VLIB_RX] = sw_if_index;
2332  vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index;
2333 
2334  vnet_buffer (p0)->ip.adj_index[VLIB_TX] = radv_info->mcast_adj_index;
2335 
2336  rh = vlib_buffer_get_current (p0);
2337  p0->current_length = sizeof (*rh);
2338 
2339  rh->neighbor.icmp.type = ICMP6_router_solicitation;
2340  rh->neighbor.icmp.code = 0;
2341  rh->neighbor.icmp.checksum = 0;
2342  rh->neighbor.reserved_must_be_zero = 0;
2343 
2344  rh->link_layer_option.header.type =
2345  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
2346  if (0 != get_mac_address (sw_if_index,
2347  rh->link_layer_option.ethernet_address))
2348  {
2349  clib_warning ("interface with sw_if_index %u has no mac address",
2350  sw_if_index);
2351  vlib_buffer_free (vm, &bi0, 1);
2352  return 0;
2353  }
2354  rh->link_layer_option.header.n_data_u64s = 1;
2355 
2356  payload_length = sizeof (rh->neighbor) + sizeof (u64);
2357 
2358  rh->ip.ip_version_traffic_class_and_flow_label =
2359  clib_host_to_net_u32 (0x6 << 28);
2360  rh->ip.payload_length = clib_host_to_net_u16 (payload_length);
2361  rh->ip.protocol = IP_PROTOCOL_ICMP6;
2362  rh->ip.hop_limit = 255;
2363  rh->ip.src_address = radv_info->link_local_address;
2364  /* set address ff02::2 */
2365  rh->ip.dst_address.as_u64[0] = clib_host_to_net_u64 (0xff02ULL << 48);
2366  rh->ip.dst_address.as_u64[1] = clib_host_to_net_u64 (2);
2367 
2368  rh->neighbor.icmp.checksum = ip6_tcp_udp_icmp_compute_checksum (vm, p0,
2369  &rh->ip,
2370  &bogus_length);
2371 
2372  return p0;
2373 }
2374 
2375 static inline void
2376 stop_sending_rs (vlib_main_t * vm, ip6_radv_t * ra)
2377 {
2378  u32 bi0;
2379 
2380  ra->keep_sending_rs = 0;
2381  if (ra->buffer)
2382  {
2383  bi0 = vlib_get_buffer_index (vm, ra->buffer);
2384  vlib_buffer_free (vm, &bi0, 1);
2385  ra->buffer = 0;
2386  }
2387 }
2388 
2389 static inline bool
2390 check_send_rs (vlib_main_t * vm, ip6_radv_t * radv_info, f64 current_time,
2391  f64 * due_time)
2392 {
2393  vlib_buffer_t *p0;
2394  vlib_frame_t *f;
2395  u32 *to_next;
2396  u32 next_index;
2397  vlib_buffer_t *c0;
2398  u32 ci0;
2399 
2400  icmp6_send_router_solicitation_params_t *params;
2401 
2402  if (!radv_info->keep_sending_rs)
2403  return false;
2404 
2405  params = &radv_info->params;
2406 
2407  if (radv_info->due_time > current_time)
2408  {
2409  *due_time = radv_info->due_time;
2410  return true;
2411  }
2412 
2413  p0 = radv_info->buffer;
2414 
2415  next_index = ip6_rewrite_mcast_node.index;
2416 
2417  c0 = vlib_buffer_copy (vm, p0);
2418  ci0 = vlib_get_buffer_index (vm, c0);
2419 
2420  f = vlib_get_frame_to_node (vm, next_index);
2421  to_next = vlib_frame_vector_args (f);
2422  to_next[0] = ci0;
2423  f->n_vectors = 1;
2424  vlib_put_frame_to_node (vm, next_index, f);
2425 
2426  if (params->mrc != 0 && --radv_info->n_left == 0)
2427  stop_sending_rs (vm, radv_info);
2428  else
2429  {
2430  radv_info->sleep_interval =
2431  (2 + random_f64_from_to (-0.1, 0.1)) * radv_info->sleep_interval;
2432  if (radv_info->sleep_interval > params->mrt)
2433  radv_info->sleep_interval =
2434  (1 + random_f64_from_to (-0.1, 0.1)) * params->mrt;
2435 
2436  radv_info->due_time = current_time + radv_info->sleep_interval;
2437 
2438  if (params->mrd != 0
2439  && current_time > radv_info->start_time + params->mrd)
2440  stop_sending_rs (vm, radv_info);
2441  else
2442  *due_time = radv_info->due_time;
2443  }
2444 
2445  return radv_info->keep_sending_rs;
2446 }
2447 
2448 static uword
2449 send_rs_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
2450  vlib_frame_t * f0)
2451 {
2452  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2453  ip6_radv_t *radv_info;
2454  uword *event_data = 0;
2455  f64 sleep_time = 1e9;
2456  f64 current_time;
2457  f64 due_time;
2458  f64 dt = 0;
2459 
2460  while (true)
2461  {
2462  vlib_process_wait_for_event_or_clock (vm, sleep_time);
2463  vlib_process_get_events (vm, &event_data);
2464  vec_reset_length (event_data);
2465 
2466  current_time = vlib_time_now (vm);
2467  do
2468  {
2469  due_time = current_time + 1e9;
2470  /* *INDENT-OFF* */
2471  pool_foreach (radv_info, nm->if_radv_pool,
2472  ({
2473  if (check_send_rs (vm, radv_info, current_time, &dt)
2474  && (dt < due_time))
2475  due_time = dt;
2476  }));
2477  /* *INDENT-ON* */
2478  current_time = vlib_time_now (vm);
2479  }
2480  while (due_time < current_time);
2481 
2482  sleep_time = due_time - current_time;
2483  }
2484 
2485  return 0;
2486 }
2487 
2488 /* *INDENT-OFF* */
2489 VLIB_REGISTER_NODE (send_rs_process_node) = {
2490  .function = send_rs_process,
2491  .type = VLIB_NODE_TYPE_PROCESS,
2492  .name = "send-rs-process",
2493 };
2494 /* *INDENT-ON* */
2495 
2496 void
2497 icmp6_send_router_solicitation (vlib_main_t * vm, u32 sw_if_index, u8 stop,
2498  icmp6_send_router_solicitation_params_t *
2499  params)
2500 {
2501  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2502  u32 rai;
2503  ip6_radv_t *ra = 0;
2504 
2505  ASSERT (~0 != sw_if_index);
2506 
2507  rai = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2508  ra = pool_elt_at_index (nm->if_radv_pool, rai);
2509 
2510  stop_sending_rs (vm, ra);
2511 
2512  if (!stop)
2513  {
2514  ra->keep_sending_rs = 1;
2515  ra->params = *params;
2516  ra->n_left = params->mrc;
2517  ra->start_time = vlib_time_now (vm);
2518  ra->sleep_interval = (1 + random_f64_from_to (-0.1, 0.1)) * params->irt;
2519  ra->due_time = 0; /* send first packet ASAP */
2520  ra->buffer = create_buffer_for_rs (vm, ra);
2521  if (!ra->buffer)
2522  ra->keep_sending_rs = 0;
2523  else
2524  vlib_process_signal_event (vm, send_rs_process_node.index, 1, 0);
2525  }
2526 }
2527 
2528 /**
2529  * @brief Add a multicast Address to the advertised MLD set
2530  */
2531 static void
2532 ip6_neighbor_add_mld_prefix (ip6_radv_t * radv_info, ip6_address_t * addr)
2533 {
2534  ip6_mldp_group_t *mcast_group_info;
2535  uword *p;
2536 
2537  /* lookup mldp info for this interface */
2538  p = mhash_get (&radv_info->address_to_mldp_index, addr);
2539  mcast_group_info =
2540  p ? pool_elt_at_index (radv_info->mldp_group_pool, p[0]) : 0;
2541 
2542  /* add address */
2543  if (!mcast_group_info)
2544  {
2545  /* add */
2546  u32 mi;
2547  pool_get (radv_info->mldp_group_pool, mcast_group_info);
2548 
2549  mi = mcast_group_info - radv_info->mldp_group_pool;
2550  mhash_set (&radv_info->address_to_mldp_index, addr, mi, /* old_value */
2551  0);
2552 
2553  mcast_group_info->type = 4;
2554  mcast_group_info->mcast_source_address_pool = 0;
2555  mcast_group_info->num_sources = 0;
2556  clib_memcpy (&mcast_group_info->mcast_address, addr,
2557  sizeof (ip6_address_t));
2558  }
2559 }
2560 
2561 /**
2562  * @brief Delete a multicast Address from the advertised MLD set
2563  */
2564 static void
2565 ip6_neighbor_del_mld_prefix (ip6_radv_t * radv_info, ip6_address_t * addr)
2566 {
2567  ip6_mldp_group_t *mcast_group_info;
2568  uword *p;
2569 
2570  p = mhash_get (&radv_info->address_to_mldp_index, &addr);
2571  mcast_group_info =
2572  p ? pool_elt_at_index (radv_info->mldp_group_pool, p[0]) : 0;
2573 
2574  if (mcast_group_info)
2575  {
2576  mhash_unset (&radv_info->address_to_mldp_index, &addr,
2577  /* old_value */ 0);
2578  pool_put (radv_info->mldp_group_pool, mcast_group_info);
2579  }
2580 }
2581 
2582 /**
2583  * @brief Add a multicast Address to the advertised MLD set
2584  */
2585 static void
2586 ip6_neighbor_add_mld_grp (ip6_radv_t * a,
2587  ip6_multicast_address_scope_t scope,
2588  ip6_multicast_link_local_group_id_t group)
2589 {
2590  ip6_address_t addr;
2591 
2592  ip6_set_reserved_multicast_address (&addr, scope, group);
2593 
2594  ip6_neighbor_add_mld_prefix (a, &addr);
2595 }
2596 
2597 /**
2598  * @brief create and initialize router advertisement parameters with default
2599  * values for this intfc
2600  */
2601 u32
2602 ip6_neighbor_sw_interface_add_del (vnet_main_t * vnm,
2603  u32 sw_if_index, u32 is_add)
2604 {
2605  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2606  ip6_radv_t *a = 0;
2607  u32 ri = ~0;
2608  vnet_sw_interface_t *sw_if0;
2609  ethernet_interface_t *eth_if0 = 0;
2610 
2611  /* lookup radv container - ethernet interfaces only */
2612  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
2613  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
2614  eth_if0 = ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
2615 
2616  if (!eth_if0)
2617  return ri;
2618 
2619  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2620  ~0);
2621  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2622 
2623  if (ri != ~0)
2624  {
2625  a = pool_elt_at_index (nm->if_radv_pool, ri);
2626 
2627  if (!is_add)
2628  {
2629  ip6_radv_prefix_t *p;
2630  ip6_mldp_group_t *m;
2631 
2632  /* release the lock on the interface's mcast adj */
2633  adj_unlock (a->mcast_adj_index);
2634 
2635  /* clean up prefix and MDP pools */
2636  /* *INDENT-OFF* */
2637  pool_flush(p, a->adv_prefixes_pool,
2638  ({
2639  mhash_unset (&a->address_to_prefix_index, &p->prefix, 0);
2640  }));
2641  pool_flush (m, a->mldp_group_pool,
2642  ({
2643  mhash_unset (&a->address_to_mldp_index, &m->mcast_address, 0);
2644  }));
2645  /* *INDENT-ON* */
2646 
2647  pool_free (a->mldp_group_pool);
2648  pool_free (a->adv_prefixes_pool);
2649 
2650  mhash_free (&a->address_to_prefix_index);
2651  mhash_free (&a->address_to_mldp_index);
2652 
2653  if (a->keep_sending_rs)
2654  a->keep_sending_rs = 0;
2655 
2656  pool_put (nm->if_radv_pool, a);
2657  nm->if_radv_pool_index_by_sw_if_index[sw_if_index] = ~0;
2658  ri = ~0;
2659  }
2660  }
2661  else
2662  {
2663  if (is_add)
2664  {
2665  pool_get (nm->if_radv_pool, a);
2666 
2667  ri = a - nm->if_radv_pool;
2668  nm->if_radv_pool_index_by_sw_if_index[sw_if_index] = ri;
2669 
2670  /* initialize default values (most of which are zero) */
2671  clib_memset (a, 0, sizeof (a[0]));
2672 
2673  a->sw_if_index = sw_if_index;
2674  a->max_radv_interval = DEF_MAX_RADV_INTERVAL;
2675  a->min_radv_interval = DEF_MIN_RADV_INTERVAL;
2676  a->curr_hop_limit = DEF_CURR_HOP_LIMIT;
2677  a->adv_router_lifetime_in_sec = DEF_DEF_RTR_LIFETIME;
2678 
2679  /* send ll address source address option */
2680  a->adv_link_layer_address = 1;
2681 
2682  a->min_delay_between_radv = MIN_DELAY_BETWEEN_RAS;
2683  a->max_delay_between_radv = MAX_DELAY_BETWEEN_RAS;
2684  a->max_rtr_default_lifetime = MAX_DEF_RTR_LIFETIME;
2685  a->seed = (u32) clib_cpu_time_now ();
2686  (void) random_u32 (&a->seed);
2687  a->randomizer = clib_cpu_time_now ();
2688  (void) random_u64 (&a->randomizer);
2689 
2690  a->initial_adverts_count = MAX_INITIAL_RTR_ADVERTISEMENTS;
2691  a->initial_adverts_sent = a->initial_adverts_count - 1;
2692  a->initial_adverts_interval = MAX_INITIAL_RTR_ADVERT_INTERVAL;
2693 
2694  /* deafult is to send */
2695  a->send_radv = 1;
2696 
2697  /* fill in radv_info for this interface that will be needed later */
2698  a->adv_link_mtu =
2699  vnet_sw_interface_get_mtu (vnm, sw_if_index, VNET_MTU_IP6);
2700 
2701  clib_memcpy (a->link_layer_address, eth_if0->address, 6);
2702 
2703  /* fill in default link-local address (this may be overridden) */
2704  ip6_link_local_address_from_ethernet_address
2705  (&a->link_local_address, eth_if0->address);
2706 
2707  mhash_init (&a->address_to_prefix_index, sizeof (uword),
2708  sizeof (ip6_address_t));
2709  mhash_init (&a->address_to_mldp_index, sizeof (uword),
2710  sizeof (ip6_address_t));
2711 
2712  a->mcast_adj_index = adj_mcast_add_or_lock (FIB_PROTOCOL_IP6,
2713  VNET_LINK_IP6,
2714  sw_if_index);
2715 
2716  a->keep_sending_rs = 0;
2717 
2718  /* add multicast groups we will always be reporting */
2719  ip6_neighbor_add_mld_grp (a,
2720  IP6_MULTICAST_SCOPE_link_local,
2721  IP6_MULTICAST_GROUP_ID_all_hosts);
2722  ip6_neighbor_add_mld_grp (a,
2723  IP6_MULTICAST_SCOPE_link_local,
2724  IP6_MULTICAST_GROUP_ID_all_routers);
2725  ip6_neighbor_add_mld_grp (a,
2726  IP6_MULTICAST_SCOPE_link_local,
2727  IP6_MULTICAST_GROUP_ID_mldv2_routers);
2728  }
2729  }
2730  return ri;
2731 }
2732 
2733 /* send an mldpv2 report */
2734 static void
2735 ip6_neighbor_send_mldpv2_report (u32 sw_if_index)
2736 {
2737  vnet_main_t *vnm = vnet_get_main ();
2738  vlib_main_t *vm = vnm->vlib_main;
2739  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2740  vnet_sw_interface_t *sw_if0;
2741  ethernet_interface_t *eth_if0;
2742  u32 ri;
2743  int bogus_length;
2744 
2745  ip6_radv_t *radv_info;
2746  u16 payload_length;
2747  vlib_buffer_t *b0;
2748  ip6_header_t *ip0;
2749  u32 *to_next;
2750  vlib_frame_t *f;
2751  u32 bo0;
2752  u32 n_to_alloc = 1;
2753  u32 n_allocated;
2754 
2755  icmp6_multicast_listener_report_header_t *rh0;
2756  icmp6_multicast_listener_report_packet_t *rp0;
2757 
2758  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
2759  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
2760  eth_if0 = ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
2761 
2762  if (!eth_if0 || !vnet_sw_interface_is_admin_up (vnm, sw_if_index))
2763  return;
2764 
2765  /* look up the radv_t information for this interface */
2766  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2767  ~0);
2768 
2769  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2770 
2771  if (ri == ~0)
2772  return;
2773 
2774  /* send report now - build a mldpv2 report packet */
2775  n_allocated = vlib_buffer_alloc (vm, &bo0, n_to_alloc);
2776  if (PREDICT_FALSE (n_allocated == 0))
2777  {
2778  alloc_fail:
2779  clib_warning ("buffer allocation failure");
2780  return;
2781  }
2782 
2783  b0 = vlib_get_buffer (vm, bo0);
2784 
2785  /* adjust the sizeof the buffer to just include the ipv6 header */
2786  b0->current_length = sizeof (icmp6_multicast_listener_report_packet_t);
2787 
2788  payload_length = sizeof (icmp6_multicast_listener_report_header_t);
2789 
2790  b0->error = ICMP6_ERROR_NONE;
2791 
2792  rp0 = vlib_buffer_get_current (b0);
2793  ip0 = (ip6_header_t *) & rp0->ip;
2794  rh0 = (icmp6_multicast_listener_report_header_t *) & rp0->report_hdr;
2795 
2796  clib_memset (rp0, 0x0, sizeof (icmp6_multicast_listener_report_packet_t));
2797 
2798  ip0->ip_version_traffic_class_and_flow_label =
2799  clib_host_to_net_u32 (0x6 << 28);
2800 
2801  ip0->protocol = IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS;
2802  /* for DEBUG - vnet driver won't seem to emit router alerts */
2803  /* ip0->protocol = IP_PROTOCOL_ICMP6; */
2804  ip0->hop_limit = 1;
2805 
2806  rh0->icmp.type = ICMP6_multicast_listener_report_v2;
2807 
2808  /* source address MUST be the link-local address */
2809  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
2810  ip0->src_address = radv_info->link_local_address;
2811 
2812  /* destination is all mldpv2 routers */
2813  ip6_set_reserved_multicast_address (&ip0->dst_address,
2814  IP6_MULTICAST_SCOPE_link_local,
2815  IP6_MULTICAST_GROUP_ID_mldv2_routers);
2816 
2817  /* add reports here */
2818  ip6_mldp_group_t *m;
2819  int num_addr_records = 0;
2820  icmp6_multicast_address_record_t rr;
2821 
2822  /* fill in the hop-by-hop extension header (router alert) info */
2823  rh0->ext_hdr.next_hdr = IP_PROTOCOL_ICMP6;
2824  rh0->ext_hdr.n_data_u64s = 0;
2825 
2826  rh0->alert.type = IP6_MLDP_ALERT_TYPE;
2827  rh0->alert.len = 2;
2828  rh0->alert.value = 0;
2829 
2830  rh0->pad.type = 1;
2831  rh0->pad.len = 0;
2832 
2833  rh0->icmp.checksum = 0;
2834 
2835  /* *INDENT-OFF* */
2836  pool_foreach (m, radv_info->mldp_group_pool,
2837  ({
2838  rr.type = m->type;
2839  rr.aux_data_len_u32s = 0;
2840  rr.num_sources = clib_host_to_net_u16 (m->num_sources);
2841  clib_memcpy(&rr.mcast_addr, &m->mcast_address, sizeof(ip6_address_t));
2842 
2843  num_addr_records++;
2844 
2845  if(vlib_buffer_add_data (vm, &bo0, (void *)&rr,
2846  sizeof(icmp6_multicast_address_record_t)))
2847  {
2848  vlib_buffer_free (vm, &bo0, 1);
2849  goto alloc_fail;
2850  }
2851 
2852  payload_length += sizeof( icmp6_multicast_address_record_t);
2853  }));
2854  /* *INDENT-ON* */
2855 
2856  rh0->rsvd = 0;
2857  rh0->num_addr_records = clib_host_to_net_u16 (num_addr_records);
2858 
2859  /* update lengths */
2860  ip0->payload_length = clib_host_to_net_u16 (payload_length);
2861 
2862  rh0->icmp.checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
2863  &bogus_length);
2864  ASSERT (bogus_length == 0);
2865 
2866  /*
2867  * OK to override w/ no regard for actual FIB, because
2868  * ip6-rewrite only looks at the adjacency.
2869  */
2870  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
2871  vnet_main.local_interface_sw_if_index;
2872 
2873  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = radv_info->mcast_adj_index;
2874  b0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
2875 
2876  vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "ip6-rewrite-mcast");
2877 
2878  f = vlib_get_frame_to_node (vm, node->index);
2879  to_next = vlib_frame_vector_args (f);
2880  to_next[0] = bo0;
2881  f->n_vectors = 1;
2882 
2883  vlib_put_frame_to_node (vm, node->index, f);
2884  return;
2885 }
2886 
2887 /* *INDENT-OFF* */
2888 VLIB_REGISTER_NODE (ip6_icmp_router_solicitation_node,static) =
2889 {
2890  .function = icmp6_router_solicitation,
2891  .name = "icmp6-router-solicitation",
2892 
2893  .vector_size = sizeof (u32),
2894 
2895  .format_trace = format_icmp6_input_trace,
2896 
2897  .n_next_nodes = ICMP6_ROUTER_SOLICITATION_N_NEXT,
2898  .next_nodes = {
2899  [ICMP6_ROUTER_SOLICITATION_NEXT_DROP] = "ip6-drop",
2900  [ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW] = "ip6-rewrite-mcast",
2901  [ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX] = "interface-output",
2902  },
2903 };
2904 /* *INDENT-ON* */
2905 
2906 /* send a RA or update the timer info etc.. */
2907 static uword
2908 ip6_neighbor_process_timer_event (vlib_main_t * vm,
2909  vlib_node_runtime_t * node,
2910  vlib_frame_t * frame)
2911 {
2912  vnet_main_t *vnm = vnet_get_main ();
2913  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2914  ip6_radv_t *radv_info;
2915  vlib_frame_t *f = 0;
2916  u32 n_this_frame = 0;
2917  u32 n_left_to_next = 0;
2918  u32 *to_next = 0;
2919  u32 bo0;
2920  icmp6_router_solicitation_header_t *h0;
2921  vlib_buffer_t *b0;
2922  f64 now = vlib_time_now (vm);
2923 
2924  /* Interface ip6 radv info list */
2925  /* *INDENT-OFF* */
2926  pool_foreach (radv_info, nm->if_radv_pool,
2927  ({
2928  if( !vnet_sw_interface_is_admin_up (vnm, radv_info->sw_if_index))
2929  {
2930  radv_info->initial_adverts_sent = radv_info->initial_adverts_count-1;
2931  radv_info->next_multicast_time = now;
2932  radv_info->last_multicast_time = now;
2933  radv_info->last_radv_time = 0;
2934  radv_info->all_routers_mcast = 0;
2935  continue;
2936  }
2937 
2938  /* Make sure that we've joined the all-routers multicast group */
2939  if(!radv_info->all_routers_mcast)
2940  {
2941  /* send MDLP_REPORT_EVENT message */
2942  ip6_neighbor_send_mldpv2_report(radv_info->sw_if_index);
2943  radv_info->all_routers_mcast = 1;
2944  }
2945 
2946  /* is it time to send a multicast RA on this interface? */
2947  if(radv_info->send_radv && (now >= radv_info->next_multicast_time))
2948  {
2949  u32 n_to_alloc = 1;
2950  u32 n_allocated;
2951 
2952  f64 rfn = (radv_info->max_radv_interval - radv_info->min_radv_interval) *
2953  random_f64 (&radv_info->seed) + radv_info->min_radv_interval;
2954 
2955  /* multicast send - compute next multicast send time */
2956  if( radv_info->initial_adverts_sent > 0)
2957  {
2958  radv_info->initial_adverts_sent--;
2959  if(rfn > radv_info-> initial_adverts_interval)
2960  rfn = radv_info-> initial_adverts_interval;
2961 
2962  /* check to see if we are ceasing to send */
2963  if( radv_info->initial_adverts_sent == 0)
2964  if(radv_info->cease_radv)
2965  radv_info->send_radv = 0;
2966  }
2967 
2968  radv_info->next_multicast_time = rfn + now;
2969  radv_info->last_multicast_time = now;
2970 
2971  /* send advert now - build a "solicted" router advert with unspecified source address */
2972  n_allocated = vlib_buffer_alloc (vm, &bo0, n_to_alloc);
2973 
2974  if (PREDICT_FALSE(n_allocated == 0))
2975  {
2976  clib_warning ("buffer allocation failure");
2977  continue;
2978  }
2979  b0 = vlib_get_buffer (vm, bo0);
2980  b0->current_length = sizeof( icmp6_router_solicitation_header_t);
2981  b0->error = ICMP6_ERROR_NONE;
2982  vnet_buffer (b0)->sw_if_index[VLIB_RX] = radv_info->sw_if_index;
2983 
2984  h0 = vlib_buffer_get_current (b0);
2985 
2986  clib_memset (h0, 0, sizeof (icmp6_router_solicitation_header_t));
2987 
2988  h0->ip.ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (0x6 << 28);
2989  h0->ip.payload_length = clib_host_to_net_u16 (sizeof (icmp6_router_solicitation_header_t)
2990  - STRUCT_OFFSET_OF (icmp6_router_solicitation_header_t, neighbor));
2991  h0->ip.protocol = IP_PROTOCOL_ICMP6;
2992  h0->ip.hop_limit = 255;
2993 
2994  /* set src/dst address as "unspecified" this marks this packet as internally generated rather than recieved */
2995  h0->ip.src_address.as_u64[0] = 0;
2996  h0->ip.src_address.as_u64[1] = 0;
2997 
2998  h0->ip.dst_address.as_u64[0] = 0;
2999  h0->ip.dst_address.as_u64[1] = 0;
3000 
3001  h0->neighbor.icmp.type = ICMP6_router_solicitation;
3002 
3003  if (PREDICT_FALSE(f == 0))
3004  {
3005  f = vlib_get_frame_to_node (vm, ip6_icmp_router_solicitation_node.index);
3006  to_next = vlib_frame_vector_args (f);
3007  n_left_to_next = VLIB_FRAME_SIZE;
3008  n_this_frame = 0;
3009  }
3010 
3011  n_this_frame++;
3012  n_left_to_next--;
3013  to_next[0] = bo0;
3014  to_next += 1;
3015 
3016  if (PREDICT_FALSE(n_left_to_next == 0))
3017  {
3018  f->n_vectors = n_this_frame;
3019  vlib_put_frame_to_node (vm, ip6_icmp_router_solicitation_node.index, f);
3020  f = 0;
3021  }
3022  }
3023  }));
3024  /* *INDENT-ON* */
3025 
3026  if (f)
3027  {
3028  ASSERT (n_this_frame);
3029  f->n_vectors = n_this_frame;
3030  vlib_put_frame_to_node (vm, ip6_icmp_router_solicitation_node.index, f);
3031  }
3032  return 0;
3033 }
3034 
3035 static uword
3036 ip6_icmp_neighbor_discovery_event_process (vlib_main_t * vm,
3037  vlib_node_runtime_t * node,
3038  vlib_frame_t * frame)
3039 {
3040  uword event_type;
3041  ip6_icmp_neighbor_discovery_event_data_t *event_data;
3042 
3043  /* init code here */
3044 
3045  while (1)
3046  {
3047  vlib_process_wait_for_event_or_clock (vm, 1. /* seconds */ );
3048 
3049  event_data = vlib_process_get_event_data (vm, &event_type);
3050 
3051  if (!event_data)
3052  {
3053  /* No events found: timer expired. */
3054  /* process interface list and send RAs as appropriate, update timer info */
3055  ip6_neighbor_process_timer_event (vm, node, frame);
3056  }
3057  else
3058  {
3059  switch (event_type)
3060  {
3061 
3062  case ICMP6_ND_EVENT_INIT:
3063  break;
3064 
3065  case ~0:
3066  break;
3067 
3068  default:
3069  ASSERT (0);
3070  }
3071 
3072  if (event_data)
3073  _vec_len (event_data) = 0;
3074  }
3075  }
3076  return frame->n_vectors;
3077 }
3078 
3079 /* *INDENT-OFF* */
3080 VLIB_REGISTER_NODE (ip6_icmp_router_advertisement_node,static) =
3081 {
3082  .function = icmp6_router_advertisement,
3083  .name = "icmp6-router-advertisement",
3084 
3085  .vector_size = sizeof (u32),
3086 
3087  .format_trace = format_icmp6_input_trace,
3088 
3089  .n_next_nodes = 1,
3090  .next_nodes = {
3091  [0] = "ip6-drop",
3092  },
3093 };
3094 /* *INDENT-ON* */
3095 
3096 vlib_node_registration_t ip6_icmp_neighbor_discovery_event_node = {
3097 
3098  .function = ip6_icmp_neighbor_discovery_event_process,
3099  .name = "ip6-icmp-neighbor-discovery-event-process",
3100  .type = VLIB_NODE_TYPE_PROCESS,
3101 };
3102 
3103 static uword
3104 icmp6_neighbor_solicitation (vlib_main_t * vm,
3105  vlib_node_runtime_t * node, vlib_frame_t * frame)
3106 {
3107  return icmp6_neighbor_solicitation_or_advertisement (vm, node, frame,
3108  /* is_solicitation */
3109  1);
3110 }
3111 
3112 static uword
3113 icmp6_neighbor_advertisement (vlib_main_t * vm,
3114  vlib_node_runtime_t * node,
3115  vlib_frame_t * frame)
3116 {
3117  return icmp6_neighbor_solicitation_or_advertisement (vm, node, frame,
3118  /* is_solicitation */
3119  0);
3120 }
3121 
3122 /* *INDENT-OFF* */
3123 VLIB_REGISTER_NODE (ip6_icmp_neighbor_solicitation_node,static) =
3124 {
3125  .function = icmp6_neighbor_solicitation,
3126  .name = "icmp6-neighbor-solicitation",
3127 
3128  .vector_size = sizeof (u32),
3129 
3130  .format_trace = format_icmp6_input_trace,
3131 
3132  .n_next_nodes = ICMP6_NEIGHBOR_SOLICITATION_N_NEXT,
3133  .next_nodes = {
3134  [ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP] = "ip6-drop",
3135  [ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY] = "interface-output",
3136  },
3137 };
3138 /* *INDENT-ON* */
3139 
3140 /* *INDENT-OFF* */
3141 VLIB_REGISTER_NODE (ip6_icmp_neighbor_advertisement_node,static) =
3142 {
3143  .function = icmp6_neighbor_advertisement,
3144  .name = "icmp6-neighbor-advertisement",
3145 
3146  .vector_size = sizeof (u32),
3147 
3148  .format_trace = format_icmp6_input_trace,
3149 
3150  .n_next_nodes = 1,
3151  .next_nodes = {
3152  [0] = "ip6-drop",
3153  },
3154 };
3155 /* *INDENT-ON* */
3156 
3157 typedef enum
3158 {
3159  IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
3160  IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX,
3161  IP6_DISCOVER_NEIGHBOR_N_NEXT,
3162 } ip6_discover_neighbor_next_t;
3163 
3164 typedef enum
3165 {
3166  IP6_DISCOVER_NEIGHBOR_ERROR_DROP,
3167  IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT,
3168  IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS,
3169 } ip6_discover_neighbor_error_t;
3170 
3171 static uword
3172 ip6_discover_neighbor_inline (vlib_main_t * vm,
3173  vlib_node_runtime_t * node,
3174  vlib_frame_t * frame, int is_glean)
3175 {
3176  vnet_main_t *vnm = vnet_get_main ();
3177  ip6_main_t *im = &ip6_main;
3178  ip_lookup_main_t *lm = &im->lookup_main;
3179  u32 *from, *to_next_drop;
3180  uword n_left_from, n_left_to_next_drop;
3181  u64 seed;
3182  u32 thread_index = vm->thread_index;
3183  int bogus_length;
3184  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3185 
3186  if (node->flags & VLIB_NODE_FLAG_TRACE)
3187  ip6_forward_next_trace (vm, node, frame, VLIB_TX);
3188 
3189  seed = throttle_seed (&im->nd_throttle, thread_index, vlib_time_now (vm));
3190 
3191  from = vlib_frame_vector_args (frame);
3192  n_left_from = frame->n_vectors;
3193 
3194  while (n_left_from > 0)
3195  {
3196  vlib_get_next_frame (vm, node, IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
3197  to_next_drop, n_left_to_next_drop);
3198 
3199  while (n_left_from > 0 && n_left_to_next_drop > 0)
3200  {
3201  u32 pi0, adj_index0, sw_if_index0, drop0, r0, next0;
3202  vnet_hw_interface_t *hw_if0;
3203  ip6_radv_t *radv_info;
3204  ip_adjacency_t *adj0;
3205  vlib_buffer_t *p0;
3206  ip6_header_t *ip0;
3207 
3208  pi0 = from[0];
3209 
3210  p0 = vlib_get_buffer (vm, pi0);
3211 
3212  adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
3213 
3214  ip0 = vlib_buffer_get_current (p0);
3215 
3216  adj0 = adj_get (adj_index0);
3217 
3218  if (!is_glean)
3219  {
3220  ip0->dst_address.as_u64[0] =
3221  adj0->sub_type.nbr.next_hop.ip6.as_u64[0];
3222  ip0->dst_address.as_u64[1] =
3223  adj0->sub_type.nbr.next_hop.ip6.as_u64[1];
3224  }
3225 
3226  sw_if_index0 = adj0->rewrite_header.sw_if_index;
3227  vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0;
3228 
3229  /* combine the address and interface for a hash */
3230  r0 = ip6_address_hash_to_u64 (&ip0->dst_address) ^ sw_if_index0;
3231 
3232  drop0 = throttle_check (&im->nd_throttle, thread_index, r0, seed);
3233 
3234  from += 1;
3235  n_left_from -= 1;
3236  to_next_drop[0] = pi0;
3237  to_next_drop += 1;
3238  n_left_to_next_drop -= 1;
3239 
3240  hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
3241 
3242  /* If the interface is link-down, drop the pkt */
3243  if (!(hw_if0->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
3244  drop0 = 1;
3245 
3246  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) > sw_if_index0)
3247  {
3248  u32 ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
3249 
3250  if (ri != ~0)
3251  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3252  else
3253  drop0 = 1;
3254  }
3255  else
3256  drop0 = 1;
3257 
3258  /*
3259  * the adj has been updated to a rewrite but the node the DPO that got
3260  * us here hasn't - yet. no big deal. we'll drop while we wait.
3261  */
3262  if (IP_LOOKUP_NEXT_REWRITE == adj0->lookup_next_index)
3263  drop0 = 1;
3264 
3265  p0->error =
3266  node->errors[drop0 ? IP6_DISCOVER_NEIGHBOR_ERROR_DROP
3267  : IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT];
3268 
3269  if (drop0)
3270  continue;
3271 
3272  {
3273  u32 bi0 = 0;
3274  icmp6_neighbor_solicitation_header_t *h0;
3275  vlib_buffer_t *b0;
3276 
3277  h0 = vlib_packet_template_get_packet
3278  (vm, &im->discover_neighbor_packet_template, &bi0);
3279  if (!h0)
3280  continue;
3281 
3282  /* copy the persistent fields from the original */
3283  b0 = vlib_get_buffer (vm, bi0);
3284  clib_memcpy_fast (b0->opaque2, p0->opaque2, sizeof (p0->opaque2));
3285 
3286  /*
3287  * Build ethernet header.
3288  * Choose source address based on destination lookup
3289  * adjacency.
3290  */
3291  if (!ip6_src_address_for_packet (lm,
3292  sw_if_index0,
3293  &ip0->dst_address,
3294  &h0->ip.src_address))
3295  {
3296  /* There is no address on the interface */
3297  p0->error =
3298  node->errors[IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS];
3299  vlib_buffer_free (vm, &bi0, 1);
3300  continue;
3301  }
3302 
3303  /*
3304  * Destination address is a solicited node multicast address.
3305  * We need to fill in
3306  * the low 24 bits with low 24 bits of target's address.
3307  */
3308  h0->ip.dst_address.as_u8[13] = ip0->dst_address.as_u8[13];
3309  h0->ip.dst_address.as_u8[14] = ip0->dst_address.as_u8[14];
3310  h0->ip.dst_address.as_u8[15] = ip0->dst_address.as_u8[15];
3311 
3312  h0->neighbor.target_address = ip0->dst_address;
3313 
3314  clib_memcpy (h0->link_layer_option.ethernet_address,
3315  hw_if0->hw_address, vec_len (hw_if0->hw_address));
3316 
3317  /* $$$$ appears we need this; why is the checksum non-zero? */
3318  h0->neighbor.icmp.checksum = 0;
3319  h0->neighbor.icmp.checksum =
3320  ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h0->ip,
3321  &bogus_length);
3322 
3323  ASSERT (bogus_length == 0);
3324 
3325  vlib_buffer_copy_trace_flag (vm, p0, bi0);
3326  vnet_buffer (b0)->sw_if_index[VLIB_TX]
3327  = vnet_buffer (p0)->sw_if_index[VLIB_TX];
3328 
3329  vnet_buffer (b0)->ip.adj_index[VLIB_TX] =
3330  radv_info->mcast_adj_index;
3331 
3332  b0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
3333  next0 = IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX;
3334 
3335  vlib_set_next_frame_buffer (vm, node, next0, bi0);
3336  }
3337  }
3338 
3339  vlib_put_next_frame (vm, node, IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
3340  n_left_to_next_drop);
3341  }
3342 
3343  return frame->n_vectors;
3344 }
3345 
3346 static uword
3347 ip6_discover_neighbor (vlib_main_t * vm,
3348  vlib_node_runtime_t * node, vlib_frame_t * frame)
3349 {
3350  return (ip6_discover_neighbor_inline (vm, node, frame, 0));
3351 }
3352 
3353 static uword
3354 ip6_glean (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
3355 {
3356  return (ip6_discover_neighbor_inline (vm, node, frame, 1));
3357 }
3358 
3359 static char *ip6_discover_neighbor_error_strings[] = {
3360  [IP6_DISCOVER_NEIGHBOR_ERROR_DROP] = "address overflow drops",
3361  [IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT] = "neighbor solicitations sent",
3362  [IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS]
3363  = "no source address for ND solicitation",
3364 };
3365 
3366 /* *INDENT-OFF* */
3367 VLIB_REGISTER_NODE (ip6_glean_node) =
3368 {
3369  .function = ip6_glean,
3370  .name = "ip6-glean",
3371  .vector_size = sizeof (u32),
3372  .format_trace = format_ip6_forward_next_trace,
3373  .n_errors = ARRAY_LEN (ip6_discover_neighbor_error_strings),
3374  .error_strings = ip6_discover_neighbor_error_strings,
3375  .n_next_nodes = IP6_DISCOVER_NEIGHBOR_N_NEXT,
3376  .next_nodes =
3377  {
3378  [IP6_DISCOVER_NEIGHBOR_NEXT_DROP] = "ip6-drop",
3379  [IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX] = "ip6-rewrite-mcast",
3380  },
3381 };
3382 VLIB_REGISTER_NODE (ip6_discover_neighbor_node) =
3383 {
3384  .function = ip6_discover_neighbor,
3385  .name = "ip6-discover-neighbor",
3386  .vector_size = sizeof (u32),
3387  .format_trace = format_ip6_forward_next_trace,
3388  .n_errors = ARRAY_LEN (ip6_discover_neighbor_error_strings),
3389  .error_strings = ip6_discover_neighbor_error_strings,
3390  .n_next_nodes = IP6_DISCOVER_NEIGHBOR_N_NEXT,
3391  .next_nodes =
3392  {
3393  [IP6_DISCOVER_NEIGHBOR_NEXT_DROP] = "ip6-drop",
3394  [IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX] = "ip6-rewrite-mcast",
3395  },
3396 };
3397 /* *INDENT-ON* */
3398 
3399 /* API support functions */
3400 int
3401 ip6_neighbor_ra_config (vlib_main_t * vm, u32 sw_if_index,
3402  u8 suppress, u8 managed, u8 other,
3403  u8 ll_option, u8 send_unicast, u8 cease,
3404  u8 use_lifetime, u32 lifetime,
3405  u32 initial_count, u32 initial_interval,
3406  u32 max_interval, u32 min_interval, u8 is_no)
3407 {
3408  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3409  int error;
3410  u32 ri;
3411 
3412  /* look up the radv_t information for this interface */
3413  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
3414  ~0);
3415  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3416  error = (ri != ~0) ? 0 : VNET_API_ERROR_INVALID_SW_IF_INDEX;
3417 
3418  if (!error)
3419  {
3420 
3421  ip6_radv_t *radv_info;
3422  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3423 
3424  if ((max_interval != 0) && (min_interval == 0))
3425  min_interval = .75 * max_interval;
3426 
3427  max_interval =
3428  (max_interval !=
3429  0) ? ((is_no) ? DEF_MAX_RADV_INTERVAL : max_interval) :
3430  radv_info->max_radv_interval;
3431  min_interval =
3432  (min_interval !=
3433  0) ? ((is_no) ? DEF_MIN_RADV_INTERVAL : min_interval) :
3434  radv_info->min_radv_interval;
3435  lifetime =
3436  (use_lifetime !=
3437  0) ? ((is_no) ? DEF_DEF_RTR_LIFETIME : lifetime) :
3438  radv_info->adv_router_lifetime_in_sec;
3439 
3440  if (lifetime)
3441  {
3442  if (lifetime > MAX_DEF_RTR_LIFETIME)
3443  lifetime = MAX_DEF_RTR_LIFETIME;
3444 
3445  if (lifetime <= max_interval)
3446  return VNET_API_ERROR_INVALID_VALUE;
3447  }
3448 
3449  if (min_interval != 0)
3450  {
3451  if ((min_interval > .75 * max_interval) || (min_interval < 3))
3452  return VNET_API_ERROR_INVALID_VALUE;
3453  }
3454 
3455  if ((initial_count > MAX_INITIAL_RTR_ADVERTISEMENTS) ||
3456  (initial_interval > MAX_INITIAL_RTR_ADVERT_INTERVAL))
3457  return VNET_API_ERROR_INVALID_VALUE;
3458 
3459  /*
3460  if "flag" is set and is_no is true then restore default value else set value corresponding to "flag"
3461  if "flag" is clear don't change corresponding value
3462  */
3463  radv_info->send_radv =
3464  (suppress != 0) ? ((is_no != 0) ? 1 : 0) : radv_info->send_radv;
3465  radv_info->adv_managed_flag =
3466  (managed != 0) ? ((is_no) ? 0 : 1) : radv_info->adv_managed_flag;
3467  radv_info->adv_other_flag =
3468  (other != 0) ? ((is_no) ? 0 : 1) : radv_info->adv_other_flag;
3469  radv_info->adv_link_layer_address =
3470  (ll_option !=
3471  0) ? ((is_no) ? 1 : 0) : radv_info->adv_link_layer_address;
3472  radv_info->send_unicast =
3473  (send_unicast != 0) ? ((is_no) ? 0 : 1) : radv_info->send_unicast;
3474  radv_info->cease_radv =
3475  (cease != 0) ? ((is_no) ? 0 : 1) : radv_info->cease_radv;
3476 
3477  radv_info->min_radv_interval = min_interval;
3478  radv_info->max_radv_interval = max_interval;
3479  radv_info->adv_router_lifetime_in_sec = lifetime;
3480 
3481  radv_info->initial_adverts_count =
3482  (initial_count !=
3483  0) ? ((is_no) ? MAX_INITIAL_RTR_ADVERTISEMENTS : initial_count) :
3484  radv_info->initial_adverts_count;
3485  radv_info->initial_adverts_interval =
3486  (initial_interval !=
3487  0) ? ((is_no) ? MAX_INITIAL_RTR_ADVERT_INTERVAL : initial_interval) :
3488  radv_info->initial_adverts_interval;
3489 
3490  /* restart */
3491  if ((cease != 0) && (is_no))
3492  radv_info->send_radv = 1;
3493 
3494  radv_info->initial_adverts_sent = radv_info->initial_adverts_count - 1;
3495  radv_info->next_multicast_time = vlib_time_now (vm);
3496  radv_info->last_multicast_time = vlib_time_now (vm);
3497  radv_info->last_radv_time = 0;
3498  }
3499  return (error);
3500 }
3501 
3502 int
3503 ip6_neighbor_ra_prefix (vlib_main_t * vm, u32 sw_if_index,
3504  ip6_address_t * prefix_addr, u8 prefix_len,
3505  u8 use_default, u32 val_lifetime, u32 pref_lifetime,
3506  u8 no_advertise, u8 off_link, u8 no_autoconfig,
3507  u8 no_onlink, u8 is_no)
3508 {
3509  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3510  int error;
3511 
3512  u32 ri;
3513 
3514  /* look up the radv_t information for this interface */
3515  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
3516  ~0);
3517 
3518  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3519 
3520  error = (ri != ~0) ? 0 : VNET_API_ERROR_INVALID_SW_IF_INDEX;
3521 
3522  if (!error)
3523  {
3524  f64 now = vlib_time_now (vm);
3525  ip6_radv_t *radv_info;
3526  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3527 
3528  /* prefix info add, delete or update */
3529  ip6_radv_prefix_t *prefix;
3530 
3531  /* lookup prefix info for this address on this interface */
3532  uword *p = mhash_get (&radv_info->address_to_prefix_index, prefix_addr);
3533 
3534  prefix = p ? pool_elt_at_index (radv_info->adv_prefixes_pool, p[0]) : 0;
3535 
3536  if (is_no)
3537  {
3538  /* delete */
3539  if (!prefix)
3540  return VNET_API_ERROR_INVALID_VALUE; /* invalid prefix */
3541 
3542  if (prefix->prefix_len != prefix_len)
3543  return VNET_API_ERROR_INVALID_VALUE_2;
3544 
3545  /* FIXME - Should the DP do this or the CP ? */
3546  /* do specific delete processing here before returning */
3547  /* try to remove from routing table */
3548 
3549  mhash_unset (&radv_info->address_to_prefix_index, prefix_addr,
3550  /* old_value */ 0);
3551  pool_put (radv_info->adv_prefixes_pool, prefix);
3552 
3553  radv_info->initial_adverts_sent =
3554  radv_info->initial_adverts_count - 1;
3555  radv_info->next_multicast_time = vlib_time_now (vm);
3556  radv_info->last_multicast_time = vlib_time_now (vm);
3557  radv_info->last_radv_time = 0;
3558  return (error);
3559  }
3560 
3561  /* adding or changing */
3562  if (!prefix)
3563  {
3564  /* add */
3565  u32 pi;
3566  pool_get (radv_info->adv_prefixes_pool, prefix);
3567  pi = prefix - radv_info->adv_prefixes_pool;
3568  mhash_set (&radv_info->address_to_prefix_index, prefix_addr, pi,
3569  /* old_value */ 0);
3570 
3571  clib_memset (prefix, 0x0, sizeof (ip6_radv_prefix_t));
3572 
3573  prefix->prefix_len = prefix_len;
3574  clib_memcpy (&prefix->prefix, prefix_addr, sizeof (ip6_address_t));
3575 
3576  /* initialize default values */
3577  prefix->adv_on_link_flag = 1; /* L bit set */
3578  prefix->adv_autonomous_flag = 1; /* A bit set */
3579  prefix->adv_valid_lifetime_in_secs = DEF_ADV_VALID_LIFETIME;
3580  prefix->adv_pref_lifetime_in_secs = DEF_ADV_PREF_LIFETIME;
3581  prefix->enabled = 1;
3582  prefix->decrement_lifetime_flag = 1;
3583  prefix->deprecated_prefix_flag = 1;
3584 
3585  if (off_link == 0)
3586  {
3587  /* FIXME - Should the DP do this or the CP ? */
3588  /* insert prefix into routing table as a connected prefix */
3589  }
3590 
3591  if (use_default)
3592  goto restart;
3593  }
3594  else
3595  {
3596 
3597  if (prefix->prefix_len != prefix_len)
3598  return VNET_API_ERROR_INVALID_VALUE_2;
3599 
3600  if (off_link != 0)
3601  {
3602  /* FIXME - Should the DP do this or the CP ? */
3603  /* remove from routing table if already there */
3604  }
3605  }
3606 
3607  if ((val_lifetime == ~0) || (pref_lifetime == ~0))
3608  {
3609  prefix->adv_valid_lifetime_in_secs = ~0;
3610  prefix->adv_pref_lifetime_in_secs = ~0;
3611  prefix->decrement_lifetime_flag = 0;
3612  }
3613  else
3614  {
3615  prefix->adv_valid_lifetime_in_secs = val_lifetime;;
3616  prefix->adv_pref_lifetime_in_secs = pref_lifetime;
3617  }
3618 
3619  /* copy remaining */
3620  prefix->enabled = !(no_advertise != 0);
3621  prefix->adv_on_link_flag = !((off_link != 0) || (no_onlink != 0));
3622  prefix->adv_autonomous_flag = !(no_autoconfig != 0);
3623 
3624  restart:
3625  /* restart */
3626  /* fill in the expiration times */
3627  prefix->valid_lifetime_expires =
3628  now + prefix->adv_valid_lifetime_in_secs;
3629  prefix->pref_lifetime_expires = now + prefix->adv_pref_lifetime_in_secs;
3630 
3631  radv_info->initial_adverts_sent = radv_info->initial_adverts_count - 1;
3632  radv_info->next_multicast_time = vlib_time_now (vm);
3633  radv_info->last_multicast_time = vlib_time_now (vm);
3634  radv_info->last_radv_time = 0;
3635  }
3636  return (error);
3637 }
3638 
3639 clib_error_t *
3640 ip6_neighbor_cmd (vlib_main_t * vm, unformat_input_t * main_input,
3641  vlib_cli_command_t * cmd)
3642 {
3643  vnet_main_t *vnm = vnet_get_main ();
3644  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3645  clib_error_t *error = 0;
3646  u8 is_no = 0;
3647  u8 suppress = 0, managed = 0, other = 0;
3648  u8 suppress_ll_option = 0, send_unicast = 0, cease = 0;
3649  u8 use_lifetime = 0;
3650  u32 sw_if_index, ra_lifetime = 0, ra_initial_count =
3651  0, ra_initial_interval = 0;
3652  u32 ra_max_interval = 0, ra_min_interval = 0;
3653 
3654  unformat_input_t _line_input, *line_input = &_line_input;
3655  vnet_sw_interface_t *sw_if0;
3656 
3657  int add_radv_info = 1;
3658  __attribute__ ((unused)) ip6_radv_t *radv_info = 0;
3659  ip6_address_t ip6_addr;
3660  u32 addr_len;
3661 
3662 
3663  /* Get a line of input. */
3664  if (!unformat_user (main_input, unformat_line_input, line_input))
3665  return 0;
3666 
3667  /* get basic radv info for this interface */
3668  if (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3669  {
3670 
3671  if (unformat_user (line_input,
3672  unformat_vnet_sw_interface, vnm, &sw_if_index))
3673  {
3674  u32 ri;
3675  ethernet_interface_t *eth_if0 = 0;
3676 
3677  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
3678  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
3679  eth_if0 =
3680  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
3681 
3682  if (!eth_if0)
3683  {
3684  error =
3685  clib_error_return (0, "Interface must be of ethernet type");
3686  goto done;
3687  }
3688 
3689  /* look up the radv_t information for this interface */
3690  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
3691  sw_if_index, ~0);
3692 
3693  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3694 
3695  if (ri != ~0)
3696  {
3697  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3698  }
3699  else
3700  {
3701  error = clib_error_return (0, "unknown interface %U'",
3702  format_unformat_error, line_input);
3703  goto done;
3704  }
3705  }
3706  else
3707  {
3708  error = clib_error_return (0, "invalid interface name %U'",
3709  format_unformat_error, line_input);
3710  goto done;
3711  }
3712  }
3713 
3714  /* get the rest of the command */
3715  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3716  {
3717  if (unformat (line_input, "no"))
3718  is_no = 1;
3719  else if (unformat (line_input, "prefix %U/%d",
3720  unformat_ip6_address, &ip6_addr, &addr_len))
3721  {
3722  add_radv_info = 0;
3723  break;
3724  }
3725  else if (unformat (line_input, "ra-managed-config-flag"))
3726  {
3727  managed = 1;
3728  break;
3729  }
3730  else if (unformat (line_input, "ra-other-config-flag"))
3731  {
3732  other = 1;
3733  break;
3734  }
3735  else if (unformat (line_input, "ra-suppress") ||
3736  unformat (line_input, "ra-surpress"))
3737  {
3738  suppress = 1;
3739  break;
3740  }
3741  else if (unformat (line_input, "ra-suppress-link-layer") ||
3742  unformat (line_input, "ra-surpress-link-layer"))
3743  {
3744  suppress_ll_option = 1;
3745  break;
3746  }
3747  else if (unformat (line_input, "ra-send-unicast"))
3748  {
3749  send_unicast = 1;
3750  break;
3751  }
3752  else if (unformat (line_input, "ra-lifetime"))
3753  {
3754  if (!unformat (line_input, "%d", &ra_lifetime))
3755  {
3756  error = unformat_parse_error (line_input);
3757  goto done;
3758  }
3759  use_lifetime = 1;
3760  break;
3761  }
3762  else if (unformat (line_input, "ra-initial"))
3763  {
3764  if (!unformat
3765  (line_input, "%d %d", &ra_initial_count, &ra_initial_interval))
3766  {
3767  error = unformat_parse_error (line_input);
3768  goto done;
3769  }
3770  break;
3771  }
3772  else if (unformat (line_input, "ra-interval"))
3773  {
3774  if (!unformat (line_input, "%d", &ra_max_interval))
3775  {
3776  error = unformat_parse_error (line_input);
3777  goto done;
3778  }
3779 
3780  if (!unformat (line_input, "%d", &ra_min_interval))
3781  ra_min_interval = 0;
3782  break;
3783  }
3784  else if (unformat (line_input, "ra-cease"))
3785  {
3786  cease = 1;
3787  break;
3788  }
3789  else
3790  {
3791  error = unformat_parse_error (line_input);
3792  goto done;
3793  }
3794  }
3795 
3796  if (add_radv_info)
3797  {
3798  ip6_neighbor_ra_config (vm, sw_if_index,
3799  suppress, managed, other,
3800  suppress_ll_option, send_unicast, cease,
3801  use_lifetime, ra_lifetime,
3802  ra_initial_count, ra_initial_interval,
3803  ra_max_interval, ra_min_interval, is_no);
3804  }
3805  else
3806  {
3807  u32 valid_lifetime_in_secs = 0;
3808  u32 pref_lifetime_in_secs = 0;
3809  u8 use_prefix_default_values = 0;
3810  u8 no_advertise = 0;
3811  u8 off_link = 0;
3812  u8 no_autoconfig = 0;
3813  u8 no_onlink = 0;
3814 
3815  /* get the rest of the command */
3816  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3817  {
3818  if (unformat (line_input, "default"))
3819  {
3820  use_prefix_default_values = 1;
3821  break;
3822  }
3823  else if (unformat (line_input, "infinite"))
3824  {
3825  valid_lifetime_in_secs = ~0;
3826  pref_lifetime_in_secs = ~0;
3827  break;
3828  }
3829  else if (unformat (line_input, "%d %d", &valid_lifetime_in_secs,
3830  &pref_lifetime_in_secs))
3831  break;
3832  else
3833  break;
3834  }
3835 
3836 
3837  /* get the rest of the command */
3838  while (!use_prefix_default_values &&
3839  unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3840  {
3841  if (unformat (line_input, "no-advertise"))
3842  no_advertise = 1;
3843  else if (unformat (line_input, "off-link"))
3844  off_link = 1;
3845  else if (unformat (line_input, "no-autoconfig"))
3846  no_autoconfig = 1;
3847  else if (unformat (line_input, "no-onlink"))
3848  no_onlink = 1;
3849  else
3850  {
3851  error = unformat_parse_error (line_input);
3852  goto done;
3853  }
3854  }
3855 
3856  ip6_neighbor_ra_prefix (vm, sw_if_index,
3857  &ip6_addr, addr_len,
3858  use_prefix_default_values,
3859  valid_lifetime_in_secs,
3860  pref_lifetime_in_secs,
3861  no_advertise,
3862  off_link, no_autoconfig, no_onlink, is_no);
3863  }
3864 
3865 done:
3866  unformat_free (line_input);
3867 
3868  return error;
3869 }
3870 
3871 static void
3872 ip6_print_addrs (vlib_main_t * vm, u32 * addrs)
3873 {
3874  ip_lookup_main_t *lm = &ip6_main.lookup_main;
3875  u32 i;
3876 
3877  for (i = 0; i < vec_len (addrs); i++)
3878  {
3879  ip_interface_address_t *a =
3880  pool_elt_at_index (lm->if_address_pool, addrs[i]);
3881  ip6_address_t *address = ip_interface_address_get_address (lm, a);
3882 
3883  vlib_cli_output (vm, "\t\t%U/%d",
3884  format_ip6_address, address, a->address_length);
3885  }
3886 }
3887 
3888 static clib_error_t *
3889 show_ip6_interface_cmd (vlib_main_t * vm,
3890  unformat_input_t * input, vlib_cli_command_t * cmd)
3891 {
3892  vnet_main_t *vnm = vnet_get_main ();
3893  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3894  clib_error_t *error = 0;
3895  u32 sw_if_index;
3896 
3897  sw_if_index = ~0;
3898 
3899  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
3900  {
3901  u32 ri;
3902 
3903  /* look up the radv_t information for this interface */
3904  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
3905  sw_if_index, ~0);
3906 
3907  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3908 
3909  if (ri != ~0)
3910  {
3911  ip_lookup_main_t *lm = &ip6_main.lookup_main;
3912  ip6_radv_t *radv_info;
3913  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3914 
3915  vlib_cli_output (vm, "%U is admin %s\n",
3916  format_vnet_sw_interface_name, vnm,
3917  vnet_get_sw_interface (vnm, sw_if_index),
3918  (vnet_sw_interface_is_admin_up (vnm, sw_if_index) ?
3919  "up" : "down"));
3920 
3921  u32 ai;
3922  u32 *link_scope = 0, *global_scope = 0;
3923  u32 *local_scope = 0, *unknown_scope = 0;
3924  ip_interface_address_t *a;
3925 
3926  vec_validate_init_empty (lm->if_address_pool_index_by_sw_if_index,
3927  sw_if_index, ~0);
3928  ai = lm->if_address_pool_index_by_sw_if_index[sw_if_index];
3929 
3930  while (ai != (u32) ~ 0)
3931  {
3932  a = pool_elt_at_index (lm->if_address_pool, ai);
3933  ip6_address_t *address =
3934  ip_interface_address_get_address (lm, a);
3935 
3936  if (ip6_address_is_link_local_unicast (address))
3937  vec_add1 (link_scope, ai);
3938  else if (ip6_address_is_global_unicast (address))
3939  vec_add1 (global_scope, ai);
3940  else if (ip6_address_is_local_unicast (address))
3941  vec_add1 (local_scope, ai);
3942  else
3943  vec_add1 (unknown_scope, ai);
3944 
3945  ai = a->next_this_sw_interface;
3946  }
3947 
3948  if (vec_len (link_scope))
3949  {
3950  vlib_cli_output (vm, "\tLink-local address(es):\n");
3951  ip6_print_addrs (vm, link_scope);
3952  vec_free (link_scope);
3953  }
3954 
3955  if (vec_len (local_scope))
3956  {
3957  vlib_cli_output (vm, "\tLocal unicast address(es):\n");
3958  ip6_print_addrs (vm, local_scope);
3959  vec_free (local_scope);
3960  }
3961 
3962  if (vec_len (global_scope))
3963  {
3964  vlib_cli_output (vm, "\tGlobal unicast address(es):\n");
3965  ip6_print_addrs (vm, global_scope);
3966  vec_free (global_scope);
3967  }
3968 
3969  if (vec_len (unknown_scope))
3970  {
3971  vlib_cli_output (vm, "\tOther-scope address(es):\n");
3972  ip6_print_addrs (vm, unknown_scope);
3973  vec_free (unknown_scope);
3974  }
3975 
3976  vlib_cli_output (vm, "\tLink-local address(es):\n");
3977  vlib_cli_output (vm, "\t\t%U\n", format_ip6_address,
3978  &radv_info->link_local_address);
3979 
3980  vlib_cli_output (vm, "\tJoined group address(es):\n");
3981  ip6_mldp_group_t *m;
3982  /* *INDENT-OFF* */
3983  pool_foreach (m, radv_info->mldp_group_pool,
3984  ({
3985  vlib_cli_output (vm, "\t\t%U\n", format_ip6_address,
3986  &m->mcast_address);
3987  }));
3988  /* *INDENT-ON* */
3989 
3990  vlib_cli_output (vm, "\tAdvertised Prefixes:\n");
3991  ip6_radv_prefix_t *p;
3992  /* *INDENT-OFF* */
3993  pool_foreach (p, radv_info->adv_prefixes_pool,
3994  ({
3995  vlib_cli_output (vm, "\t\tprefix %U, length %d\n",
3996  format_ip6_address, &p->prefix, p->prefix_len);
3997  }));
3998  /* *INDENT-ON* */
3999 
4000  vlib_cli_output (vm, "\tMTU is %d\n", radv_info->adv_link_mtu);
4001  vlib_cli_output (vm, "\tICMP error messages are unlimited\n");
4002  vlib_cli_output (vm, "\tICMP redirects are disabled\n");
4003  vlib_cli_output (vm, "\tICMP unreachables are not sent\n");
4004  vlib_cli_output (vm, "\tND DAD is disabled\n");
4005  //vlib_cli_output (vm, "\tND reachable time is %d milliseconds\n",);
4006  vlib_cli_output (vm, "\tND advertised reachable time is %d\n",
4007  radv_info->adv_neighbor_reachable_time_in_msec);
4008  vlib_cli_output (vm,
4009  "\tND advertised retransmit interval is %d (msec)\n",
4010  radv_info->
4011  adv_time_in_msec_between_retransmitted_neighbor_solicitations);
4012 
4013  u32 ra_interval = radv_info->max_radv_interval;
4014  u32 ra_interval_min = radv_info->min_radv_interval;
4015  vlib_cli_output (vm,
4016  "\tND router advertisements are sent every %d seconds (min interval is %d)\n",
4017  ra_interval, ra_interval_min);
4018  vlib_cli_output (vm,
4019  "\tND router advertisements live for %d seconds\n",
4020  radv_info->adv_router_lifetime_in_sec);
4021  vlib_cli_output (vm,
4022  "\tHosts %s stateless autoconfig for addresses\n",
4023  (radv_info->adv_managed_flag) ? "use" :
4024  " don't use");
4025  vlib_cli_output (vm, "\tND router advertisements sent %d\n",
4026  radv_info->n_advertisements_sent);
4027  vlib_cli_output (vm, "\tND router solicitations received %d\n",
4028  radv_info->n_solicitations_rcvd);
4029  vlib_cli_output (vm, "\tND router solicitations dropped %d\n",
4030  radv_info->n_solicitations_dropped);
4031  }
4032  else
4033  {
4034  error = clib_error_return (0, "IPv6 not enabled on interface",
4035  format_unformat_error, input);
4036 
4037  }
4038  }
4039  return error;
4040 }
4041 
4042 /*?
4043  * This command is used to display various IPv6 attributes on a given
4044  * interface.
4045  *
4046  * @cliexpar
4047  * Example of how to display IPv6 settings:
4048  * @cliexstart{show ip6 interface GigabitEthernet2/0/0}
4049  * GigabitEthernet2/0/0 is admin up
4050  * Link-local address(es):
4051  * fe80::ab8/64
4052  * Joined group address(es):
4053  * ff02::1
4054  * ff02::2
4055  * ff02::16
4056  * ff02::1:ff00:ab8
4057  * Advertised Prefixes:
4058  * prefix fe80::fe:28ff:fe9c:75b3, length 64
4059  * MTU is 1500
4060  * ICMP error messages are unlimited
4061  * ICMP redirects are disabled
4062  * ICMP unreachables are not sent
4063  * ND DAD is disabled
4064  * ND advertised reachable time is 0
4065  * ND advertised retransmit interval is 0 (msec)
4066  * ND router advertisements are sent every 200 seconds (min interval is 150)
4067  * ND router advertisements live for 600 seconds
4068  * Hosts use stateless autoconfig for addresses
4069  * ND router advertisements sent 19336
4070  * ND router solicitations received 0
4071  * ND router solicitations dropped 0
4072  * @cliexend
4073  * Example of output if IPv6 is not enabled on the interface:
4074  * @cliexstart{show ip6 interface GigabitEthernet2/0/0}
4075  * show ip6 interface: IPv6 not enabled on interface
4076  * @cliexend
4077 ?*/
4078 /* *INDENT-OFF* */
4079 VLIB_CLI_COMMAND (show_ip6_interface_command, static) =
4080 {
4081  .path = "show ip6 interface",
4082  .function = show_ip6_interface_cmd,
4083  .short_help = "show ip6 interface <interface>",
4084 };
4085 /* *INDENT-ON* */
4086 
4087 clib_error_t *
4088 disable_ip6_interface (vlib_main_t * vm, u32 sw_if_index)
4089 {
4090  clib_error_t *error = 0;
4091  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4092  u32 ri;
4093 
4094  /* look up the radv_t information for this interface */
4095  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
4096  ~0);
4097  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4098 
4099  /* if not created - do nothing */
4100  if (ri != ~0)
4101  {
4102  ip6_radv_t *radv_info;
4103 
4104  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4105 
4106  /* check radv_info ref count for other ip6 addresses on this interface */
4107  /* This implicitly excludes the link local address */
4108  if (radv_info->ref_count == 0)
4109  {
4110  /* essentially "disables" ipv6 on this interface */
4111  ip6_ll_prefix_t ilp = {
4112  .ilp_addr = radv_info->link_local_address,
4113  .ilp_sw_if_index = sw_if_index,
4114  };
4115  ip6_ll_table_entry_delete (&ilp);
4116  ip6_sw_interface_enable_disable (sw_if_index, 0);
4117  ip6_mfib_interface_enable_disable (sw_if_index, 0);
4118  ip6_neighbor_sw_interface_add_del (vnet_get_main (), sw_if_index,
4119  0);
4120  }
4121  }
4122  return error;
4123 }
4124 
4125 int
4126 ip6_interface_enabled (vlib_main_t * vm, u32 sw_if_index)
4127 {
4128  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4129  u32 ri = ~0;
4130 
4131  /* look up the radv_t information for this interface */
4132  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
4133  ~0);
4134 
4135  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4136 
4137  return ri != ~0;
4138 }
4139 
4140 clib_error_t *
4141 enable_ip6_interface (vlib_main_t * vm, u32 sw_if_index)
4142 {
4143  clib_error_t *error = 0;
4144  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4145  u32 ri;
4146  int is_add = 1;
4147 
4148  /* look up the radv_t information for this interface */
4149  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
4150  ~0);
4151 
4152  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4153 
4154  /* if not created yet */
4155  if (ri == ~0)
4156  {
4157  vnet_main_t *vnm = vnet_get_main ();
4158  vnet_sw_interface_t *sw_if0;
4159 
4160  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
4161  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
4162  {
4163  ethernet_interface_t *eth_if0;
4164 
4165  eth_if0 =
4166  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
4167  if (eth_if0)
4168  {
4169  /* create radv_info. for this interface. This holds all the info needed for router adverts */
4170  ri =
4171  ip6_neighbor_sw_interface_add_del (vnm, sw_if_index, is_add);
4172 
4173  if (ri != ~0)
4174  {
4175  ip6_radv_t *radv_info;
4176  ip6_address_t link_local_address;
4177 
4178  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4179 
4180  ip6_link_local_address_from_ethernet_mac_address
4181  (&link_local_address, eth_if0->address);
4182 
4183  sw_if0 = vnet_get_sw_interface (vnm, sw_if_index);
4184  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_SUB ||
4185  sw_if0->type == VNET_SW_INTERFACE_TYPE_PIPE ||
4186  sw_if0->type == VNET_SW_INTERFACE_TYPE_P2P)
4187  {
4188  /* make up an interface id */
4189  link_local_address.as_u64[1] =
4190  random_u64 (&radv_info->randomizer);
4191 
4192  link_local_address.as_u64[0] =
4193  clib_host_to_net_u64 (0xFE80000000000000ULL);
4194  /* clear u bit */
4195  link_local_address.as_u8[8] &= 0xfd;
4196  }
4197  {
4198  ip6_ll_prefix_t ilp = {
4199  .ilp_addr = link_local_address,
4200  .ilp_sw_if_index = sw_if_index,
4201  };
4202 
4203  ip6_ll_table_entry_update (&ilp, FIB_ROUTE_PATH_LOCAL);
4204  }
4205 
4206  /* essentially "enables" ipv6 on this interface */
4207  ip6_mfib_interface_enable_disable (sw_if_index, 1);
4208  ip6_sw_interface_enable_disable (sw_if_index, 1);
4209 
4210  if (!error)
4211  {
4212  radv_info->link_local_address = link_local_address;
4213  }
4214  }
4215  }
4216  }
4217  }
4218  return error;
4219 }
4220 
4221 int
4222 ip6_get_ll_address (u32 sw_if_index, ip6_address_t * addr)
4223 {
4224  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4225  ip6_radv_t *radv_info;
4226  u32 ri;
4227 
4228  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) <= sw_if_index)
4229  return 0;
4230 
4231  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4232 
4233  if (ri == ~0)
4234  return 0;
4235 
4236  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4237  *addr = radv_info->link_local_address;
4238 
4239  return (!0);
4240 }
4241 
4242 static clib_error_t *
4243 enable_ip6_interface_cmd (vlib_main_t * vm,
4244  unformat_input_t * input, vlib_cli_command_t * cmd)
4245 {
4246  vnet_main_t *vnm = vnet_get_main ();
4247  clib_error_t *error = 0;
4248  u32 sw_if_index;
4249 
4250  sw_if_index = ~0;
4251 
4252  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4253  {
4254  enable_ip6_interface (vm, sw_if_index);
4255  }
4256  else
4257  {
4258  error = clib_error_return (0, "unknown interface\n'",
4259  format_unformat_error, input);
4260 
4261  }
4262  return error;
4263 }
4264 
4265 /*?
4266  * This command is used to enable IPv6 on a given interface.
4267  *
4268  * @cliexpar
4269  * Example of how enable IPv6 on a given interface:
4270  * @cliexcmd{enable ip6 interface GigabitEthernet2/0/0}
4271 ?*/
4272 /* *INDENT-OFF* */
4273 VLIB_CLI_COMMAND (enable_ip6_interface_command, static) =
4274 {
4275  .path = "enable ip6 interface",
4276  .function = enable_ip6_interface_cmd,
4277  .short_help = "enable ip6 interface <interface>",
4278 };
4279 /* *INDENT-ON* */
4280 
4281 static clib_error_t *
4282 disable_ip6_interface_cmd (vlib_main_t * vm,
4283  unformat_input_t * input, vlib_cli_command_t * cmd)
4284 {
4285  vnet_main_t *vnm = vnet_get_main ();
4286  clib_error_t *error = 0;
4287  u32 sw_if_index;
4288 
4289  sw_if_index = ~0;
4290 
4291  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4292  {
4293  error = disable_ip6_interface (vm, sw_if_index);
4294  }
4295  else
4296  {
4297  error = clib_error_return (0, "unknown interface\n'",
4298  format_unformat_error, input);
4299 
4300  }
4301  return error;
4302 }
4303 
4304 /*?
4305  * This command is used to disable IPv6 on a given interface.
4306  *
4307  * @cliexpar
4308  * Example of how disable IPv6 on a given interface:
4309  * @cliexcmd{disable ip6 interface GigabitEthernet2/0/0}
4310 ?*/
4311 /* *INDENT-OFF* */
4312 VLIB_CLI_COMMAND (disable_ip6_interface_command, static) =
4313 {
4314  .path = "disable ip6 interface",
4315  .function = disable_ip6_interface_cmd,
4316  .short_help = "disable ip6 interface <interface>",
4317 };
4318 /* *INDENT-ON* */
4319 
4320 /*?
4321  * This command is used to configure the neighbor discovery
4322  * parameters on a given interface. Use the '<em>show ip6 interface</em>'
4323  * command to display some of the current neighbor discovery parameters
4324  * on a given interface. This command has three formats:
4325  *
4326  *
4327  * <b>Format 1 - Router Advertisement Options:</b> (Only one can be entered in a single command)
4328  *
4329  * '<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>'
4330  *
4331  * Where:
4332  *
4333  * <em>[no] ra-managed-config-flag</em> - Advertises in ICMPv6
4334  * router-advertisement messages to use stateful address
4335  * auto-configuration to obtain address information (sets the M-bit).
4336  * Default is the M-bit is not set and the '<em>no</em>' option
4337  * returns it to this default state.
4338  *
4339  * <em>[no] ra-other-config-flag</em> - Indicates in ICMPv6
4340  * router-advertisement messages that hosts use stateful auto
4341  * configuration to obtain nonaddress related information (sets
4342  * the O-bit). Default is the O-bit is not set and the '<em>no</em>'
4343  * option returns it to this default state.
4344  *
4345  * <em>[no] ra-suppress</em> - Disables sending ICMPv6 router-advertisement
4346  * messages. The '<em>no</em>' option implies to enable sending ICMPv6
4347  * router-advertisement messages.
4348  *
4349  * <em>[no] ra-suppress-link-layer</em> - Indicates not to include the
4350  * optional source link-layer address in the ICMPv6 router-advertisement
4351  * messages. Default is to include the optional source link-layer address
4352  * and the '<em>no</em>' option returns it to this default state.
4353  *
4354  * <em>[no] ra-send-unicast</em> - Use the source address of the
4355  * router-solicitation message if availiable. The default is to use
4356  * multicast address of all nodes, and the '<em>no</em>' option returns
4357  * it to this default state.
4358  *
4359  * <em>[no] ra-lifetime <lifetime></em> - Advertises the lifetime of a
4360  * default router in ICMPv6 router-advertisement messages. The range is
4361  * from 0 to 9000 seconds. '<em><lifetime></em>' must be greater than
4362  * '<em><max-interval></em>'. The default value is 600 seconds and the
4363  * '<em>no</em>' option returns it to this default value.
4364  *
4365  * <em>[no] ra-initial <cnt> <interval></em> - Number of initial ICMPv6
4366  * router-advertisement messages sent and the interval between each
4367  * message. Range for count is 1 - 3 and default is 3. Range for interval
4368  * is 1 to 16 seconds, and default is 16 seconds. The '<em>no</em>' option
4369  * returns both to their default value.
4370  *
4371  * <em>[no] ra-interval <max-interval> [<min-interval>]</em> - Configures the
4372  * interval between sending ICMPv6 router-advertisement messages. The
4373  * range for max-interval is from 4 to 200 seconds. min-interval can not
4374  * be more than 75% of max-interval. If not set, min-interval will be
4375  * set to 75% of max-interval. The range for min-interval is from 3 to
4376  * 150 seconds. The '<em>no</em>' option returns both to their default
4377  * value.
4378  *
4379  * <em>[no] ra-cease</em> - Cease sending ICMPv6 router-advertisement messages.
4380  * The '<em>no</em>' options implies to start (or restart) sending
4381  * ICMPv6 router-advertisement messages.
4382  *
4383  *
4384  * <b>Format 2 - Prefix Options:</b>
4385  *
4386  * '<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>'
4387  *
4388  * Where:
4389  *
4390  * <em>no</em> - All additional flags are ignored and the prefix is deleted.
4391  *
4392  * <em><valid-lifetime> <pref-lifetime></em> - '<em><valid-lifetime></em>' is the
4393  * length of time in seconds during what the prefix is valid for the purpose of
4394  * on-link determination. Range is 7203 to 2592000 seconds and default is 2592000
4395  * seconds (30 days). '<em><pref-lifetime></em>' is the prefered-lifetime and is the
4396  * length of time in seconds during what addresses generated from the prefix remain
4397  * preferred. Range is 0 to 604800 seconds and default is 604800 seconds (7 days).
4398  *
4399  * <em>infinite</em> - Both '<em><valid-lifetime></em>' and '<em><<pref-lifetime></em>'
4400  * are inifinte, no timeout.
4401  *
4402  * <em>no-advertise</em> - Do not send full router address in prefix
4403  * advertisement. Default is to advertise (i.e. - This flag is off by default).
4404  *
4405  * <em>off-link</em> - Prefix is off-link, clear L-bit in packet. Default is on-link
4406  * (i.e. - This flag is off and L-bit in packet is set by default and this prefix can
4407  * be used for on-link determination). '<em>no-onlink</em>' also controls the L-bit.
4408  *
4409  * <em>no-autoconfig</em> - Do not use prefix for autoconfiguration, clear A-bit in packet.
4410  * Default is autoconfig (i.e. - This flag is off and A-bit in packet is set by default.
4411  *
4412  * <em>no-onlink</em> - Do not use prefix for onlink determination, clear L-bit in packet.
4413  * Default is on-link (i.e. - This flag is off and L-bit in packet is set by default and
4414  * this prefix can be used for on-link determination). '<em>off-link</em>' also controls
4415  * the L-bit.
4416  *
4417  *
4418  * <b>Format 3: - Default of Prefix:</b>
4419  *
4420  * '<em><b>ip6 nd <interface> [no] prefix <ip6-address>/<width> default</b></em>'
4421  *
4422  * When a new prefix is added (or existing one is being overwritten) <em>default</em>
4423  * uses default values for the prefix. If <em>no</em> is used, the <em>default</em>
4424  * is ignored and the prefix is deleted.
4425  *
4426  *
4427  * @cliexpar
4428  * Example of how set a router advertisement option:
4429  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 ra-interval 100 20}
4430  * Example of how to add a prefix:
4431  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 prefix fe80::fe:28ff:fe9c:75b3/64 infinite no-advertise}
4432  * Example of how to delete a prefix:
4433  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 no prefix fe80::fe:28ff:fe9c:75b3/64}
4434 ?*/
4435 /* *INDENT-OFF* */
4436 VLIB_CLI_COMMAND (ip6_nd_command, static) =
4437 {
4438  .path = "ip6 nd",
4439  .short_help = "ip6 nd <interface> ...",
4440  .function = ip6_neighbor_cmd,
4441 };
4442 /* *INDENT-ON* */
4443 
4444 clib_error_t *
4445 ip6_neighbor_set_link_local_address (vlib_main_t * vm, u32 sw_if_index,
4446  ip6_address_t * address)
4447 {
4448  clib_error_t *error = 0;
4449  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4450  u32 ri;
4451  ip6_radv_t *radv_info;
4452  vnet_main_t *vnm = vnet_get_main ();
4453  ip6_ll_prefix_t pfx = { 0, };
4454 
4455  if (!ip6_address_is_link_local_unicast (address))
4456  return (error = clib_error_return (0, "address not link-local",
4457  format_unformat_error));
4458 
4459  /* call enable ipv6 */
4460  enable_ip6_interface (vm, sw_if_index);
4461 
4462  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4463 
4464  if (ri != ~0)
4465  {
4466  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4467 
4468  pfx.ilp_sw_if_index = sw_if_index;
4469 
4470  pfx.ilp_addr = radv_info->link_local_address;
4471  ip6_ll_table_entry_delete (&pfx);
4472 
4473  pfx.ilp_addr = *address;
4474  ip6_ll_table_entry_update (&pfx, FIB_ROUTE_PATH_LOCAL);
4475 
4476  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4477  radv_info->link_local_address = *address;
4478  }
4479  else
4480  {
4481  vnm->api_errno = VNET_API_ERROR_IP6_NOT_ENABLED;
4482  error = clib_error_return (0, "ip6 not enabled for interface",
4483  format_unformat_error);
4484  }
4485  return error;
4486 }
4487 
4488 /**
4489  * @brief callback when an interface address is added or deleted
4490  */
4491 static void
4492 ip6_neighbor_add_del_interface_address (ip6_main_t * im,
4493  uword opaque,
4494  u32 sw_if_index,
4495  ip6_address_t * address,
4496  u32 address_length,
4497  u32 if_address_index, u32 is_delete)
4498 {
4499  vnet_main_t *vnm = vnet_get_main ();
4500  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4501  u32 ri;
4502  vlib_main_t *vm = vnm->vlib_main;
4503  ip6_radv_t *radv_info;
4504  ip6_address_t a;
4505 
4506  /* create solicited node multicast address for this interface address */
4507  ip6_set_solicited_node_multicast_address (&a, 0);
4508 
4509  a.as_u8[0xd] = address->as_u8[0xd];
4510  a.as_u8[0xe] = address->as_u8[0xe];
4511  a.as_u8[0xf] = address->as_u8[0xf];
4512 
4513  if (!is_delete)
4514  {
4515  /* try to create radv_info - does nothing if ipv6 already enabled */
4516  enable_ip6_interface (vm, sw_if_index);
4517 
4518  /* look up the radv_t information for this interface */
4519  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
4520  sw_if_index, ~0);
4521  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4522  if (ri != ~0)
4523  {
4524  /* get radv_info */
4525  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4526 
4527  /* add address */
4528  if (!ip6_address_is_link_local_unicast (address))
4529  radv_info->ref_count++;
4530 
4531  ip6_neighbor_add_mld_prefix (radv_info, &a);
4532  }
4533  }
4534  else
4535  {
4536 
4537  /* delete */
4538  /* look up the radv_t information for this interface */
4539  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
4540  sw_if_index, ~0);
4541  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4542 
4543  if (ri != ~0)
4544  {
4545  /* get radv_info */
4546  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4547 
4548  ip6_neighbor_del_mld_prefix (radv_info, &a);
4549 
4550  /* if interface up send MLDP "report" */
4551  radv_info->all_routers_mcast = 0;
4552 
4553  /* add address */
4554  if (!ip6_address_is_link_local_unicast (address))
4555  radv_info->ref_count--;
4556  }
4557  /* Ensure that IPv6 is disabled, and LL removed after ref_count reaches 0 */
4558  disable_ip6_interface (vm, sw_if_index);
4559  }
4560 }
4561 
4562 clib_error_t *
4563 ip6_set_neighbor_limit (u32 neighbor_limit)
4564 {
4565  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4566 
4567  nm->limit_neighbor_cache_size = neighbor_limit;
4568  return 0;
4569 }
4570 
4571 static void
4572 ip6_neighbor_table_bind (ip6_main_t * im,
4573  uword opaque,
4574  u32 sw_if_index,
4575  u32 new_fib_index, u32 old_fib_index)
4576 {
4577  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4578  ip6_neighbor_t *n = NULL;
4579  u32 i, *to_re_add = 0;
4580 
4581  /* *INDENT-OFF* */
4582  pool_foreach (n, nm->neighbor_pool,
4583  ({
4584  if (n->key.sw_if_index == sw_if_index)
4585  vec_add1 (to_re_add, n - nm->neighbor_pool);
4586  }));
4587  /* *INDENT-ON* */
4588 
4589  for (i = 0; i < vec_len (to_re_add); i++)
4590  {
4591  n = pool_elt_at_index (nm->neighbor_pool, to_re_add[i]);
4592  ip6_neighbor_adj_fib_remove (n, old_fib_index);
4593  ip6_neighbor_adj_fib_add (n, new_fib_index);
4594  }
4595  vec_free (to_re_add);
4596 }
4597 
4598 static clib_error_t *
4599 ip6_neighbor_init (vlib_main_t * vm)
4600 {
4601  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4602  ip6_main_t *im = &ip6_main;
4603 
4604  mhash_init (&nm->neighbor_index_by_key,
4605  /* value size */ sizeof (uword),
4606  /* key size */ sizeof (ip6_neighbor_key_t));
4607 
4608  icmp6_register_type (vm, ICMP6_neighbor_solicitation,
4609  ip6_icmp_neighbor_solicitation_node.index);
4610  icmp6_register_type (vm, ICMP6_neighbor_advertisement,
4611  ip6_icmp_neighbor_advertisement_node.index);
4612  icmp6_register_type (vm, ICMP6_router_solicitation,
4613  ip6_icmp_router_solicitation_node.index);
4614  icmp6_register_type (vm, ICMP6_router_advertisement,
4615  ip6_icmp_router_advertisement_node.index);
4616 
4617  /* handler node for ip6 neighbor discovery events and timers */
4618  vlib_register_node (vm, &ip6_icmp_neighbor_discovery_event_node);
4619 
4620  /* add call backs */
4621  ip6_add_del_interface_address_callback_t cb;
4622  clib_memset (&cb, 0x0, sizeof (ip6_add_del_interface_address_callback_t));
4623 
4624  /* when an interface address changes... */
4625  cb.function = ip6_neighbor_add_del_interface_address;
4626  cb.function_opaque = 0;
4627  vec_add1 (im->add_del_interface_address_callbacks, cb);
4628 
4629  ip6_table_bind_callback_t cbt;
4630  cbt.function = ip6_neighbor_table_bind;
4631  cbt.function_opaque = 0;
4632  vec_add1 (im->table_bind_callbacks, cbt);
4633 
4634  mhash_init (&nm->pending_resolutions_by_address,
4635  /* value size */ sizeof (uword),
4636  /* key size */ sizeof (ip6_address_t));
4637 
4638  mhash_init (&nm->mac_changes_by_address,
4639  /* value size */ sizeof (uword),
4640  /* key size */ sizeof (ip6_address_t));
4641 
4642  /* default, configurable */
4643  nm->limit_neighbor_cache_size = 50000;
4644 
4645  nm->wc_ip6_nd_publisher_node = (uword) ~ 0;
4646 
4647  nm->ip6_ra_publisher_node = (uword) ~ 0;
4648 
4649 #if 0
4650  /* $$$$ Hack fix for today */
4651  vec_validate_init_empty
4652  (im->discover_neighbor_next_index_by_hw_if_index, 32, 0 /* drop */ );
4653 #endif
4654 
4655  return 0;
4656 }
4657 
4658 VLIB_INIT_FUNCTION (ip6_neighbor_init);
4659 
4660 
4661 void
4662 vnet_register_ip6_neighbor_resolution_event (vnet_main_t * vnm,
4663  void *address_arg,
4664  uword node_index,
4665  uword type_opaque, uword data)
4666 {
4667  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4668  ip6_address_t *address = address_arg;
4669  uword *p;
4670  pending_resolution_t *pr;
4671 
4672  pool_get (nm->pending_resolutions, pr);
4673 
4674  pr->next_index = ~0;
4675  pr->node_index = node_index;
4676  pr->type_opaque = type_opaque;
4677  pr->data = data;
4678 
4679  p = mhash_get (&nm->pending_resolutions_by_address, address);
4680  if (p)
4681  {
4682  /* Insert new resolution at the head of the list */
4683  pr->next_index = p[0];
4684  mhash_unset (&nm->pending_resolutions_by_address, address, 0);
4685  }
4686 
4687  mhash_set (&nm->pending_resolutions_by_address, address,
4688  pr - nm->pending_resolutions, 0 /* old value */ );
4689 }
4690 
4691 int
4692 vnet_add_del_ip6_nd_change_event (vnet_main_t * vnm,
4693  ip6_nd_change_event_cb_t data_callback,
4694  u32 pid,
4695  void *address_arg,
4696  uword node_index,
4697  uword type_opaque, uword data, int is_add)
4698 {
4699  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4700  ip6_address_t *address = address_arg;
4701 
4702  /* Try to find an existing entry */
4703  u32 *first = (u32 *) mhash_get (&nm->mac_changes_by_address, address);
4704  u32 *p = first;
4705  pending_resolution_t *mc;
4706  while (p && *p != ~0)
4707  {
4708  mc = pool_elt_at_index (nm->mac_changes, *p);
4709  if (mc->node_index == node_index && mc->type_opaque == type_opaque
4710  && mc->pid == pid)
4711  break;
4712  p = &mc->next_index;
4713  }
4714 
4715  int found = p && *p != ~0;
4716  if (is_add)
4717  {
4718  if (found)
4719  return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
4720 
4721  pool_get (nm->mac_changes, mc);
4722  /* *INDENT-OFF* */
4723  *mc = (pending_resolution_t)
4724  {
4725  .next_index = ~0,
4726  .node_index = node_index,
4727  .type_opaque = type_opaque,
4728  .data = data,
4729  .data_callback = data_callback,
4730  .pid = pid,
4731  };
4732  /* *INDENT-ON* */
4733 
4734  /* Insert new resolution at the end of the list */
4735  u32 new_idx = mc - nm->mac_changes;
4736  if (p)
4737  p[0] = new_idx;
4738  else
4739  mhash_set (&nm->mac_changes_by_address, address, new_idx, 0);
4740  }
4741  else
4742  {
4743  if (!found)
4744  return VNET_API_ERROR_NO_SUCH_ENTRY;
4745 
4746  /* Clients may need to clean up pool entries, too */
4747  if (data_callback)
4748  (data_callback) (mc->data, NULL /* no new mac addrs */ , 0, NULL);
4749 
4750  /* Remove the entry from the list and delete the entry */
4751  *p = mc->next_index;
4752  pool_put (nm->mac_changes, mc);
4753 
4754  /* Remove from hash if we deleted the last entry */
4755  if (*p == ~0 && p == first)
4756  mhash_unset (&nm->mac_changes_by_address, address, 0);
4757  }
4758  return 0;
4759 }
4760 
4761 int
4762 vnet_ip6_nd_term (vlib_main_t * vm,
4763  vlib_node_runtime_t * node,
4764  vlib_buffer_t * p0,
4765  ethernet_header_t * eth,
4766  ip6_header_t * ip, u32 sw_if_index, u16 bd_index)
4767 {
4768  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4769  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
4770  mac_address_t mac;
4771 
4772  mac_address_from_bytes (&mac, eth->src_address);
4773  ndh = ip6_next_header (ip);
4774  if (ndh->icmp.type != ICMP6_neighbor_solicitation &&
4775  ndh->icmp.type != ICMP6_neighbor_advertisement)
4776  return 0;
4777 
4778  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
4779  (p0->flags & VLIB_BUFFER_IS_TRACED)))
4780  {
4781  u8 *t0 = vlib_add_trace (vm, node, p0,
4782  sizeof (icmp6_input_trace_t));
4783  clib_memcpy (t0, ip, sizeof (icmp6_input_trace_t));
4784  }
4785 
4786  /* Check if anyone want ND events for L2 BDs */
4787  if (PREDICT_FALSE
4788  (nm->wc_ip6_nd_publisher_node != (uword) ~ 0
4789  && !ip6_address_is_link_local_unicast (&ip->src_address)))
4790  {
4791  vnet_nd_wc_publish (sw_if_index, &mac, &ip->src_address);
4792  }
4793 
4794  /* Check if MAC entry exsist for solicited target IP */
4795  if (ndh->icmp.type == ICMP6_neighbor_solicitation)
4796  {
4797  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
4798  l2_bridge_domain_t *bd_config;
4799  u8 *macp;
4800 
4801  opt = (void *) (ndh + 1);
4802  if ((opt->header.type !=
4803  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address) ||
4804  (opt->header.n_data_u64s != 1))
4805  return 0; /* source link layer address option not present */
4806 
4807  bd_config = vec_elt_at_index (l2input_main.bd_configs, bd_index);
4808  macp =
4809  (u8 *) hash_get_mem (bd_config->mac_by_ip6, &ndh->target_address);
4810  if (macp)
4811  { /* found ip-mac entry, generate eighbor advertisement response */
4812  int bogus_length;
4813  vlib_node_runtime_t *error_node =
4814  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
4815  ip->dst_address = ip->src_address;
4816  ip->src_address = ndh->target_address;
4817  ip->hop_limit = 255;
4818  opt->header.type =
4819  ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
4820  clib_memcpy (opt->ethernet_address, macp, 6);
4821  ndh->icmp.type = ICMP6_neighbor_advertisement;
4822  ndh->advertisement_flags = clib_host_to_net_u32
4823  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
4824  ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
4825  ndh->icmp.checksum = 0;
4826  ndh->icmp.checksum =
4827  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip, &bogus_length);
4828  clib_memcpy (eth->dst_address, eth->src_address, 6);
4829  clib_memcpy (eth->src_address, macp, 6);
4830  vlib_error_count (vm, error_node->node_index,
4831  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_TX, 1);
4832  return 1;
4833  }
4834  }
4835 
4836  return 0;
4837 
4838 }
4839 
4840 int
4841 ip6_neighbor_proxy_add_del (u32 sw_if_index, ip6_address_t * addr, u8 is_del)
4842 {
4843  u32 fib_index;
4844 
4845  fib_prefix_t pfx = {
4846  .fp_len = 128,
4847  .fp_proto = FIB_PROTOCOL_IP6,
4848  .fp_addr = {
4849  .ip6 = *addr,
4850  },
4851  };
4852  ip46_address_t nh = {
4853  .ip6 = *addr,
4854  };
4855 
4856  fib_index = ip6_fib_table_get_index_for_sw_if_index (sw_if_index);
4857 
4858  if (~0 == fib_index)
4859  return VNET_API_ERROR_NO_SUCH_FIB;
4860 
4861  if (is_del)
4862  {
4863  fib_table_entry_path_remove (fib_index,
4864  &pfx,
4865  FIB_SOURCE_IP6_ND_PROXY,
4866  DPO_PROTO_IP6,
4867  &nh,
4868  sw_if_index,
4869  ~0, 1, FIB_ROUTE_PATH_FLAG_NONE);
4870  /* flush the ND cache of this address if it's there */
4871  vnet_unset_ip6_ethernet_neighbor (vlib_get_main (), sw_if_index, addr);
4872  }
4873  else
4874  {
4875  fib_table_entry_path_add (fib_index,
4876  &pfx,
4877  FIB_SOURCE_IP6_ND_PROXY,
4878  FIB_ENTRY_FLAG_NONE,
4879  DPO_PROTO_IP6,
4880  &nh,
4881  sw_if_index,
4882  ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
4883  }
4884  return (0);
4885 }
4886 
4887 static clib_error_t *
4888 set_ip6_nd_proxy_cmd (vlib_main_t * vm,
4889  unformat_input_t * input, vlib_cli_command_t * cmd)
4890 {
4891  vnet_main_t *vnm = vnet_get_main ();
4892  clib_error_t *error = 0;
4893  ip6_address_t addr;
4894  u32 sw_if_index;
4895  u8 is_del = 0;
4896 
4897  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4898  {
4899  /* get the rest of the command */
4900  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
4901  {
4902  if (unformat (input, "%U", unformat_ip6_address, &addr))
4903  break;
4904  else if (unformat (input, "delete") || unformat (input, "del"))
4905  is_del = 1;
4906  else
4907  return (unformat_parse_error (input));
4908  }
4909  }
4910 
4911  ip6_neighbor_proxy_add_del (sw_if_index, &addr, is_del);
4912 
4913  return error;
4914 }
4915 
4916 /* *INDENT-OFF* */
4917 VLIB_CLI_COMMAND (set_ip6_nd_proxy_command, static) =
4918 {
4919  .path = "set ip6 nd proxy",
4920  .short_help = "set ip6 nd proxy <HOST> <INTERFACE>",
4921  .function = set_ip6_nd_proxy_cmd,
4922 };
4923 /* *INDENT-ON* */
4924 
4925 void
4926 ethernet_ndp_change_mac (u32 sw_if_index)
4927 {
4928  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4929  ip6_neighbor_t *n;
4930  adj_index_t ai;
4931 
4932  /* *INDENT-OFF* */
4933  pool_foreach (n, nm->neighbor_pool,
4934  ({
4935  if (n->key.sw_if_index == sw_if_index)
4936  {
4937  adj_nbr_walk_nh6 (sw_if_index,
4938  &n->key.ip6_address,
4939  ip6_nd_mk_complete_walk, n);
4940  }
4941  }));
4942  /* *INDENT-ON* */
4943 
4944  ai = adj_glean_get (FIB_PROTOCOL_IP6, sw_if_index);
4945 
4946  if (ADJ_INDEX_INVALID != ai)
4947  adj_glean_update_rewrite (ai);
4948 }
4949 
4950 void
4951 send_ip6_na (vlib_main_t * vm, u32 sw_if_index)
4952 {
4953  ip6_main_t *i6m = &ip6_main;
4954  ip6_address_t *ip6_addr = ip6_interface_first_address (i6m, sw_if_index);
4955 
4956  send_ip6_na_w_addr (vm, ip6_addr, sw_if_index);
4957 }
4958 
4959 void
4960 send_ip6_na_w_addr (vlib_main_t * vm,
4961  const ip6_address_t * ip6_addr, u32 sw_if_index)
4962 {
4963  ip6_main_t *i6m = &ip6_main;
4964  vnet_main_t *vnm = vnet_get_main ();
4965  u8 *rewrite, rewrite_len;
4966  vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
4967  u8 dst_address[6];
4968 
4969  if (ip6_addr)
4970  {
4971  clib_warning
4972  ("Sending unsolicitated NA IP6 address %U on sw_if_idex %d",
4973  format_ip6_address, ip6_addr, sw_if_index);
4974 
4975  /* Form unsolicited neighbor advertisement packet from NS pkt template */
4976  int bogus_length;
4977  u32 bi = 0;
4978  icmp6_neighbor_solicitation_header_t *h =
4979  vlib_packet_template_get_packet (vm,
4980  &i6m->discover_neighbor_packet_template,
4981  &bi);
4982  if (!h)
4983  return;
4984 
4985  ip6_set_reserved_multicast_address (&h->ip.dst_address,
4986  IP6_MULTICAST_SCOPE_link_local,
4987  IP6_MULTICAST_GROUP_ID_all_hosts);
4988  h->ip.src_address = ip6_addr[0];
4989  h->neighbor.icmp.type = ICMP6_neighbor_advertisement;
4990  h->neighbor.target_address = ip6_addr[0];
4991  h->neighbor.advertisement_flags = clib_host_to_net_u32
4992  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
4993  h->link_layer_option.header.type =
4994  ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
4995  clib_memcpy (h->link_layer_option.ethernet_address,
4996  hi->hw_address, vec_len (hi->hw_address));
4997  h->neighbor.icmp.checksum =
4998  ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h->ip, &bogus_length);
4999  ASSERT (bogus_length == 0);
5000 
5001  /* Setup MAC header with IP6 Etype and mcast DMAC */
5002  vlib_buffer_t *b = vlib_get_buffer (vm, bi);
5003  ip6_multicast_ethernet_address (dst_address,
5004  IP6_MULTICAST_GROUP_ID_all_hosts);
5005  rewrite =
5006  ethernet_build_rewrite (vnm, sw_if_index, VNET_LINK_IP6, dst_address);
5007  rewrite_len = vec_len (rewrite);
5008  vlib_buffer_advance (b, -rewrite_len);
5009  ethernet_header_t *e = vlib_buffer_get_current (b);
5010  clib_memcpy (e->dst_address, rewrite, rewrite_len);
5011  vec_free (rewrite);
5012 
5013  /* Send unsolicited ND advertisement packet out the specified interface */
5014  vnet_buffer (b)->sw_if_index[VLIB_RX] =
5015  vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index;
5016  vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index);
5017  u32 *to_next = vlib_frame_vector_args (f);
5018  to_next[0] = bi;
5019  f->n_vectors = 1;
5020  vlib_put_frame_to_node (vm, hi->output_node_index, f);
5021  }
5022 }
5023 
5024 /*
5025  * fd.io coding-style-patch-verification: ON
5026  *
5027  * Local Variables:
5028  * eval: (c-set-style "gnu")
5029  * End:
5030  */
ip6_radv_t::due_time
f64 due_time
Definition: ip6_neighbor.c:164
vlib_buffer_t::opaque2
u32 opaque2[14]
Definition: buffer.h:170
ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
#define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
vec_validate
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:439
ra_report_prefix_info_t
Definition: ip6_neighbor.h:113
sw_if_index
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Definition: ipsec_gre.api:37
ip6_neighbor_main_t::if_radv_pool
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Definition: ip6_neighbor.c:203
MIN_DELAY_BETWEEN_RAS
#define MIN_DELAY_BETWEEN_RAS
Definition: ip6_neighbor.c:133
ip6_neighbor_adj_fib_add
static void ip6_neighbor_adj_fib_add(ip6_neighbor_t *n, u32 fib_index)
Definition: ip6_neighbor.c:712
vnet_rewrite_one_header
#define vnet_rewrite_one_header(rw0, p0, most_likely_size)
Definition: rewrite.h:199
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u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index, VLIB_BUFFER_IS_TRACED: trace this buffer.
Definition: buffer.h:124
DEF_DEF_RTR_LIFETIME
#define DEF_DEF_RTR_LIFETIME
Definition: ip6_neighbor.c:128
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fib_protocol_t fp_proto
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Definition: fib_types.h:212
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Definition: lookup.h:90
ip6_nd_mk_incomplete
static void ip6_nd_mk_incomplete(adj_index_t ai)
Definition: ip6_neighbor.c:515
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vmrglw vmrglh hi
Definition: vector_altivec.h:99
pool_next_index
#define pool_next_index(P, I)
Return next occupied pool index after i, useful for safe iteration.
Definition: pool.h:522
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, dpo_proto_t next_hop_proto, const ip46_address_t *next_hop, u32 next_hop_sw_if_index, u32 next_hop_fib_index, u32 next_hop_weight, fib_mpls_label_t *next_hop_labels, fib_route_path_flags_t path_flags)
Add one path to an entry (aka route) in the FIB.
Definition: fib_table.c:522
mhash_t
Definition: mhash.h:46
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typedef address
Definition: ip_types.api:30
VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST
#define VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST
Definition: rewrite.h:224
icmp6_router_solicitation_or_advertisement_next_t
icmp6_router_solicitation_or_advertisement_next_t
Definition: ip6_neighbor.c:1490
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u32 n_solicitations_rcvd
Definition: ip6_neighbor.c:154
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ip6_discover_neighbor_next_t
Definition: ip6_neighbor.c:3157
ip6_neighbor_syslog
static void ip6_neighbor_syslog(vlib_main_t *vm, int priority, char *fmt,...)
Definition: ip6_neighbor.c:1443
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Definition: vhost_user.h:115
ip6_radv_t::ref_count
int ref_count
Definition: ip6_neighbor.c:121
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Definition: arp.c:62
ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP
#define ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP
random_default_seed
static uword random_default_seed(void)
Default random seed (unix/linux user-mode)
Definition: random.h:91
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:277
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:3123
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:703
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void send_ip6_na_w_addr(vlib_main_t *vm, const ip6_address_t *ip6_addr, u32 sw_if_index)
Definition: ip6_neighbor.c:4960
a
a
Definition: bitmap.h:538
ip6_neighbor_set_unset_rpc_args_t::flags
ip_neighbor_flags_t flags
Definition: ip6_neighbor.c:406
vlib_buffer_free
static void vlib_buffer_free(vlib_main_t *vm, u32 *buffers, u32 n_buffers)
Free buffers Frees the entire buffer chain for each buffer.
Definition: buffer_funcs.h:865
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:3503
ADJ_NBR_REWRITE_FLAG_INCOMPLETE
An indication that the rewrite is incomplete, i.e.
Definition: adj_nbr.h:90
ip6_neighbor_main_t::ip6_ra_publisher_node
uword ip6_ra_publisher_node
Definition: ip6_neighbor.c:214
ip6_nbr_probe
static void ip6_nbr_probe(ip_adjacency_t *adj)
Definition: ip6_neighbor.c:435
ip6_neighbor_set_link_local_address
clib_error_t * ip6_neighbor_set_link_local_address(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *address)
Definition: ip6_neighbor.c:4445
ip6_neighbor_init
static clib_error_t * ip6_neighbor_init(vlib_main_t *vm)
Definition: ip6_neighbor.c:4599
ip6_radv_t::last_radv_time
f64 last_radv_time
Definition: ip6_neighbor.c:143
vlib_set_next_frame_buffer
static void vlib_set_next_frame_buffer(vlib_main_t *vm, vlib_node_runtime_t *node, u32 next_index, u32 buffer_index)
Definition: node_funcs.h:401
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:125
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:47
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:92
log_level_strings
static char * log_level_strings[]
Definition: ip6_neighbor.c:1434
ip6_multicast_address_scope_t
ip6_multicast_address_scope_t
Definition: ip6_packet.h:157
ip6_neighbor_set_unset_rpc_args_t
Definition: ip6_neighbor.c:403
IP6_DISCOVER_NEIGHBOR_NEXT_DROP
Definition: ip6_neighbor.c:3159
stop_sending_rs
static void stop_sending_rs(vlib_main_t *vm, ip6_radv_t *ra)
Definition: ip6_neighbor.c:2376
ip6_nd_mk_complete
static void ip6_nd_mk_complete(adj_index_t ai, ip6_neighbor_t *nbr)
Definition: ip6_neighbor.c:505
ip6_neighbor_main_t::neighbor_index_by_key
mhash_t neighbor_index_by_key
Definition: ip6_neighbor.c:199
icmp6_send_router_solicitation
void icmp6_send_router_solicitation(vlib_main_t *vm, u32 sw_if_index, u8 stop, icmp6_send_router_solicitation_params_t *params)
Definition: ip6_neighbor.c:2497
ip6_link_local_address_from_ethernet_mac_address
static void ip6_link_local_address_from_ethernet_mac_address(ip6_address_t *ip, u8 *mac)
Definition: ip6.h:398
PREDICT_TRUE
#define PREDICT_TRUE(x)
Definition: clib.h:112
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:2565
ip6_table_bind_callback_t::function_opaque
uword function_opaque
Definition: ip6.h:115
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:49
u64
unsigned long u64
Definition: types.h:89
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:4888
ip6_radv_t::send_unicast
int send_unicast
Definition: ip6_neighbor.c:114
ip6_radv_prefix_t::prefix
ip6_address_t prefix
Definition: ip6_neighbor.c:46
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:120
pending_resolution_t::data_callback
ip6_nd_change_event_cb_t data_callback
Definition: ip6_neighbor.c:177
IP_LOOKUP_NEXT_MCAST
Multicast Adjacency.
Definition: adj.h:82
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:339
call_ip6_neighbor_callbacks
clib_error_t * call_ip6_neighbor_callbacks(void *data, _vnet_ip6_neighbor_function_list_elt_t *elt)
Definition: ip6_neighbor.c:1473
clib_memcpy_fast
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
ip6_radv_t::last_multicast_time
f64 last_multicast_time
Definition: ip6_neighbor.c:144
send_ip6_na
void send_ip6_na(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:4951
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:468
NULL
#define NULL
Definition: clib.h:58
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:279
vlib_time_now
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:255
IP_LOOKUP_NEXT_BCAST
Broadcasr Adjacency.
Definition: adj.h:85
IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX
Definition: ip6_neighbor.c:3160
ip6_radv_t::adv_prefixes_pool
ip6_radv_prefix_t * adv_prefixes_pool
Definition: ip6_neighbor.c:99
ip_adjacency_t_
IP unicast adjacency.
Definition: adj.h:221
ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW
Definition: ip6_neighbor.c:1493
ip6_mldp_group_t
Definition: ip6_neighbor.c:70
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:420
vlib_buffer_add_data
int vlib_buffer_add_data(vlib_main_t *vm, u32 *buffer_index, void *data, u32 n_data_bytes)
Definition: buffer.c:410
ethernet_header_t::src_address
u8 src_address[6]
Definition: packet.h:56
wc_nd_signal_report
static void wc_nd_signal_report(wc_nd_report_t *r)
Definition: ip6_neighbor.c:284
ip6_neighbors_entries
ip6_neighbor_t * ip6_neighbors_entries(u32 sw_if_index)
Definition: ip6_neighbor.c:997
ip6_neighbor_main_t::pending_resolutions
pending_resolution_t * pending_resolutions
Definition: ip6_neighbor.c:189
vlib_main_t::thread_index
u32 thread_index
Definition: main.h:197
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:1145
ip6_discover_neighbor_inline
static uword ip6_discover_neighbor_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int is_glean)
Definition: ip6_neighbor.c:3172
ip6_neighbor_t::mac
mac_address_t mac
Definition: ip6_neighbor.h:36
ip_interface_address_t::address_length
u16 address_length
Definition: lookup.h:99
vlib_buffer_t::current_length
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:113
IP_LOOKUP_NEXT_REWRITE
This packet is to be rewritten and forwarded to the next processing node.
Definition: adj.h:73
ip6_mldp_group_t::num_sources
u16 num_sources
Definition: ip6_neighbor.c:75
vec_add1
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:522
ip6_interface_first_address
ip6_address_t * ip6_interface_first_address(ip6_main_t *im, u32 sw_if_index)
get first IPv6 interface address
Definition: ip6_forward.c:178
vnet_sw_interface_compare
word vnet_sw_interface_compare(vnet_main_t *vnm, uword sw_if_index0, uword sw_if_index1)
Definition: interface.c:1186
clib_cpu_time_now
static u64 clib_cpu_time_now(void)
Definition: time.h:75
IP6_NBR_MK_KEY
#define IP6_NBR_MK_KEY(k, sw_if_index, addr)
Definition: ip6_neighbor.c:528
logmask
static int logmask
Definition: ip6_neighbor.c:1440
ip6_get_ll_address
int ip6_get_ll_address(u32 sw_if_index, ip6_address_t *addr)
Definition: ip6_neighbor.c:4222
ip6_header_t::hop_limit
u8 hop_limit
Definition: ip6_packet.h:382
i
int i
Definition: flowhash_template.h:376
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:4841
mac_address_copy
static_always_inline void mac_address_copy(mac_address_t *dst, const mac_address_t *src)
Definition: mac_address.h:128
adj_glean_get
adj_index_t adj_glean_get(fib_protocol_t proto, u32 sw_if_index)
Get an existing glean.
Definition: adj_glean.c:119
unformat_user
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:983
ip6_radv_t::n_left
u32 n_left
Definition: ip6_neighbor.c:165
clib_memset
clib_memset(h->entries, 0, sizeof(h->entries[0])*entries)
STRUCT_OFFSET_OF
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:65
ip6_radv_prefix_t::adv_pref_lifetime_in_secs
u32 adv_pref_lifetime_in_secs
Definition: ip6_neighbor.c:51
DEF_ADV_PREF_LIFETIME
#define DEF_ADV_PREF_LIFETIME
Definition: ip6_neighbor.c:64
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:58
vnet_sw_interface_t
Definition: interface.h:680
ip6_neighbor_sw_interface_add_del
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:2602
format
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
va_format
u8 * va_format(u8 *s, const char *fmt, va_list *va)
Definition: format.c:387
vnet_sw_interface_get_mtu
static u32 vnet_sw_interface_get_mtu(vnet_main_t *vnm, u32 sw_if_index, vnet_mtu_t af)
Definition: interface_funcs.h:312
ip6_address_is_local_unicast
static uword ip6_address_is_local_unicast(const ip6_address_t *a)
Definition: ip6_packet.h:335
unformat_vnet_sw_interface
unformat_function_t unformat_vnet_sw_interface
Definition: interface_funcs.h:435
ip6_fib.h
data
u8 data[128]
Definition: ipsec.api:248
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:113
dst
vl_api_ip4_address_t dst
Definition: ipsec_gre.api:39
IP_NEIGHBOR_FLAG_NONE
Definition: ip_neighbor.h:40
ip6_radv_t::adv_neighbor_reachable_time_in_msec
u32 adv_neighbor_reachable_time_in_msec
Definition: ip6_neighbor.c:88
ip6_radv_t
Definition: ip6_neighbor.c:80
ip6_neighbor_main_t::ip6_ra_publisher_et
uword ip6_ra_publisher_et
Definition: ip6_neighbor.c:215
vlib_node_runtime_t::errors
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:469
FIB_ENTRY_FLAG_ATTACHED
Definition: fib_entry.h:277
pool_get
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:236
ip6_neighbor_set_unset_rpc_args_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.c:408
addr
vhost_vring_addr_t addr
Definition: vhost_user.h:121
ip6_header_t::src_address
ip6_address_t src_address
Definition: ip6_packet.h:385
ip6_radv_t::send_radv
int send_radv
Definition: ip6_neighbor.c:112
format_vnet_sw_if_index_name
format_function_t format_vnet_sw_if_index_name
Definition: interface_funcs.h:431
ra_report_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.h:123
u8
unsigned char u8
Definition: types.h:56
vlib_frame_t
Definition: node.h:380
ip_adjacency_t_::nbr
struct ip_adjacency_t_::@46::@47 nbr
IP_LOOKUP_NEXT_ARP/IP_LOOKUP_NEXT_REWRITE.
vlib_buffer_copy
static vlib_buffer_t * vlib_buffer_copy(vlib_main_t *vm, vlib_buffer_t *b)
Definition: buffer_funcs.h:959
icmp6_send_router_solicitation_params_t::irt
u32 irt
Definition: ip6_neighbor.h:102
ra_report_prefix_info_t::preferred_time
u32 preferred_time
Definition: ip6_neighbor.h:118
disable_ip6_interface
clib_error_t * disable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:4088
vec_reset_length
#define vec_reset_length(v)
Reset vector length to zero NULL-pointer tolerant.
Definition: vec_bootstrap.h:149
f64
double f64
Definition: types.h:142
ip_adjacency_t_::ia_link
vnet_link_t ia_link
link/ether-type 1 bytes
Definition: adj.h:242
clib_memcpy
#define clib_memcpy(d, s, n)
Definition: string.h:180
wc_nd_report_t
Definition: ip6_neighbor.h:91
ip6_rewrite_mcast_node
vlib_node_registration_t ip6_rewrite_mcast_node
(constructor) VLIB_REGISTER_NODE (ip6_rewrite_mcast_node)
Definition: ip6_forward.c:2127
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:2908
IP_LOOKUP_NEXT_PUNT
Adjacency to punt this packet.
Definition: adj.h:55
ip6_main_t::discover_neighbor_packet_template
vlib_packet_template_t discover_neighbor_packet_template
Definition: ip6.h:221
create_buffer_for_rs
static vlib_buffer_t * create_buffer_for_rs(vlib_main_t *vm, ip6_radv_t *radv_info)
Definition: ip6_neighbor.c:2310
vlib_node_runtime_t
Definition: node.h:463
adj_glean_update_rewrite
void adj_glean_update_rewrite(adj_index_t adj_index)
adj_glean_update_rewrite
Definition: adj_glean.c:101
ethernet_main
ethernet_main_t ethernet_main
Definition: init.c:45
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:218
ip6_print_addrs
static void ip6_print_addrs(vlib_main_t *vm, u32 *addrs)
Definition: ip6_neighbor.c:3872
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:433
ICMP6_ROUTER_SOLICITATION_NEXT_DROP
Definition: ip6_neighbor.c:1492
ip6_nd_change_event_cb_t
int(* ip6_nd_change_event_cb_t)(u32 pool_index, const mac_address_t *new_mac, u32 sw_if_index, const ip6_address_t *address)
Definition: ip6.h:439
ip6_address_hash_to_u64
static u64 ip6_address_hash_to_u64(const ip6_address_t *a)
Definition: ip6_packet.h:364
vnet_hw_interface_t::hw_address
u8 * hw_address
Definition: interface.h:502
ip6_neighbors_pool
ip6_neighbor_t * ip6_neighbors_pool(void)
Definition: ip6_neighbor.c:990
l2_input.h
static_always_inline
#define static_always_inline
Definition: clib.h:99
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:389
pool_foreach
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:493
VLIB_INIT_FUNCTION
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
ip6_glean
static uword ip6_glean(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ip6_neighbor.c:3354
vlib_process_get_events
static uword vlib_process_get_events(vlib_main_t *vm, uword **data_vector)
Return the first event type which has occurred and a vector of per-event data of that type...
Definition: node_funcs.h:546
vnet_main_t::local_interface_sw_if_index
u32 local_interface_sw_if_index
Definition: vnet.h:54
VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION
VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(ip6_neighbor_sw_interface_up_down)
ip6_radv_t::link_layer_addr_len
u8 link_layer_addr_len
Definition: ip6_neighbor.c:96
ra_report_t
Definition: ip6_neighbor.h:121
ip6_neighbor_main_t::wc_ip6_nd_publisher_node
uword wc_ip6_nd_publisher_node
Definition: ip6_neighbor.c:210
ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE
#define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE
ip_neighbor_flags_t
enum ip_neighbor_flags_t_ ip_neighbor_flags_t
ethernet_header_t::dst_address
u8 dst_address[6]
Definition: packet.h:55
ip6_neighbor_set_unset_rpc_args_t::is_add
u8 is_add
Definition: ip6_neighbor.c:405
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:4282
format_ip6_neighbor_ip6_entry
static u8 * format_ip6_neighbor_ip6_entry(u8 *s, va_list *va)
Definition: ip6_neighbor.c:339
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:3036
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:1017
vnet_hw_interface_t::flags
vnet_hw_interface_flags_t flags
Definition: interface.h:494
DEF_ADV_VALID_LIFETIME
#define DEF_ADV_VALID_LIFETIME
Definition: ip6_neighbor.c:63
ip6_radv_t::start_time
f64 start_time
Definition: ip6_neighbor.c:166
ip6_radv_t::address_to_mldp_index
mhash_t address_to_mldp_index
Definition: ip6_neighbor.c:108
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:175
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:81
fib_prefix_t_
Aggregrate type for a prefix.
Definition: fib_types.h:203
vlib_get_frame_to_node
vlib_frame_t * vlib_get_frame_to_node(vlib_main_t *vm, u32 to_node_index)
Definition: main.c:189
clib_error_return
#define clib_error_return(e, args...)
Definition: error.h:99
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:119
vl_api_rpc_call_main_thread
void vl_api_rpc_call_main_thread(void *fp, u8 *data, u32 data_length)
Definition: vlib_api.c:623
ip6_neighbor_public_main_t
Definition: ip6_neighbor.h:143
ICMP6_ROUTER_SOLICITATION_N_NEXT
Definition: ip6_neighbor.c:1495
adj_unlock
void adj_unlock(adj_index_t adj_index)
Release a reference counting lock on the adjacency.
Definition: adj.c:318
u32
unsigned int u32
Definition: types.h:88
ip6_radv_t::max_radv_interval
f64 max_radv_interval
Definition: ip6_neighbor.c:137
ip6_link_local_address_from_ethernet_address
static void ip6_link_local_address_from_ethernet_address(ip6_address_t *a, const u8 *ethernet_address)
Definition: ip6_packet.h:214
ip6_icmp_neighbor_discovery_event_data_t::fib_index
u32 fib_index
Definition: ip6_neighbor.c:230
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:1092
ip6_neighbor_set_unset_rpc_args_t::mac
mac_address_t mac
Definition: ip6_neighbor.c:407
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:195
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:4762
fib_prefix_t_::fp_len
u16 fp_len
The mask length.
Definition: fib_types.h:207
ethernet_ip6_mcast_dst_addr
const u8 * ethernet_ip6_mcast_dst_addr(void)
Definition: interface.c:67
VLIB_FRAME_SIZE
#define VLIB_FRAME_SIZE
Definition: node.h:376
ra_signal_report
static void ra_signal_report(ra_report_t *r)
Definition: ip6_neighbor.c:316
random_f64_from_to
static f64 random_f64_from_to(f64 from, f64 to)
Definition: ip6_neighbor.c:2286
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:326
IP6_DISCOVER_NEIGHBOR_N_NEXT
Definition: ip6_neighbor.c:3161
ra_report_t::time_in_msec_between_retransmitted_neighbor_solicitations
u32 time_in_msec_between_retransmitted_neighbor_solicitations
Definition: ip6_neighbor.h:129
ra_report_prefix_info_t::prefix
fib_prefix_t prefix
Definition: ip6_neighbor.h:115
vlib_get_buffer_index
static u32 vlib_get_buffer_index(vlib_main_t *vm, void *p)
Translate buffer pointer into buffer index.
Definition: buffer_funcs.h:257
ip6_neighbor_main_t::opcode_by_name
uword * opcode_by_name
Definition: ip6_neighbor.c:185
ra_report_t::router_address
ip6_address_t router_address
Definition: ip6_neighbor.h:124
MAX_DELAY_BETWEEN_RAS
#define MAX_DELAY_BETWEEN_RAS
Definition: ip6_neighbor.c:134
FIB_ENTRY_FLAG_NONE
Definition: fib_entry.h:275
ip6_table_bind_callback_t
Definition: ip6.h:112
unformat_line_input
unformat_function_t unformat_line_input
Definition: format.h:282
first
static heap_elt_t * first(heap_header_t *h)
Definition: heap.c:59
ip6_main_t::nd_throttle
throttle_t nd_throttle
ND throttling.
Definition: ip6.h:242
ip6_radv_t::max_delay_between_radv
f64 max_delay_between_radv
Definition: ip6_neighbor.c:140
vlib_buffer_t::error
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:136
ip6_radv_t::adv_time_in_msec_between_retransmitted_neighbor_solicitations
u32 adv_time_in_msec_between_retransmitted_neighbor_solicitations
Definition: ip6_neighbor.c:89
pool_flush
#define pool_flush(VAR, POOL, BODY)
Remove all elements from a pool in a safe way.
Definition: pool.h:553
set_unset_ip6_neighbor_rpc
static void set_unset_ip6_neighbor_rpc(vlib_main_t *vm, u32 sw_if_index, const ip6_address_t *a, const mac_address_t *mac, int is_add, ip_neighbor_flags_t flags)
Definition: ip6_neighbor.c:416
vnet_main_t::api_errno
vnet_api_error_t api_errno
Definition: vnet.h:78
FIB_ENTRY_FLAG_LOCAL
Definition: fib_entry.h:280
ip6_radv_prefix_t::pref_lifetime_expires
f64 pref_lifetime_expires
Definition: ip6_neighbor.c:55
FIB_SOURCE_IP6_ND
IPv6 ND (seen in the link-local tables)
Definition: fib_entry.h:102
format_vnet_sw_interface_name
format_function_t format_vnet_sw_interface_name
Definition: interface_funcs.h:429
adj_mcast_update_rewrite
void adj_mcast_update_rewrite(adj_index_t adj_index, u8 *rewrite, u8 offset)
adj_mcast_update_rewrite
Definition: adj_mcast.c:102
ip6_neighbor_key_t
Definition: ip6_neighbor.h:26
ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX
Definition: ip6_neighbor.c:1494
ip6_header_t::protocol
u8 protocol
Definition: ip6_packet.h:379
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:514
mac_address_from_bytes
static_always_inline void mac_address_from_bytes(mac_address_t *mac, const u8 *bytes)
Definition: mac_address.h:92
vnet_main_t::vlib_main
vlib_main_t * vlib_main
Definition: vnet.h:80
ip6_radv_t::min_radv_interval
f64 min_radv_interval
Definition: ip6_neighbor.c:138
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:4662
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:964
FIB_SOURCE_ADJ
Adjacency source.
Definition: fib_entry.h:108
IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT
Definition: ip6_neighbor.c:3167
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:226
ra_report_t::neighbor_reachable_time_in_msec
u32 neighbor_reachable_time_in_msec
Definition: ip6_neighbor.h:128
pending_resolution_t::type_opaque
uword type_opaque
Definition: arp.c:66
data_callback
vlib_frame_t * data_callback(flow_report_main_t *frm, flow_report_t *fr, vlib_frame_t *f, u32 *to_next, u32 node_index)
Definition: nat_ipfix_logging.c:1780
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:2586
address_length
u8 address_length
Definition: ip_types.api:37
ethernet_interface::address
u8 address[6]
Definition: ethernet.h:156
vnet_nd_wc_publish
static int vnet_nd_wc_publish(u32 sw_if_index, const mac_address_t *mac, const ip6_address_t *ip6)
publish wildcard arp event
Definition: ip6_neighbor.c:270
ctx
long ctx[MAX_CONNS]
Definition: main.c:144
ip6_radv_t::all_routers_mcast
int all_routers_mcast
Definition: ip6_neighbor.c:118
unformat_input_t
struct _unformat_input_t unformat_input_t
u16
unsigned short u16
Definition: types.h:57
ip6_discover_neighbor_error_strings
static char * ip6_discover_neighbor_error_strings[]
Definition: ip6_neighbor.c:3359
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:4243
DEF_MAX_RADV_INTERVAL
#define DEF_MAX_RADV_INTERVAL
Definition: ip6_neighbor.c:125
IP6_MLDP_ALERT_TYPE
#define IP6_MLDP_ALERT_TYPE
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:198
ip6_radv_t::link_layer_address
u8 link_layer_address[8]
Definition: ip6_neighbor.c:95
ip6_radv_t::next_multicast_time
f64 next_multicast_time
Definition: ip6_neighbor.c:145
vlib_buffer_get_current
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:229
ip6_neighbor_main_t::limit_neighbor_cache_size
u32 limit_neighbor_cache_size
Definition: ip6_neighbor.c:206
ip6_ll_fib_get
u32 ip6_ll_fib_get(u32 sw_if_index)
For use in the data plane.
Definition: ip6_ll_table.c:28
pool_put
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:286
foreach_log_level
#define foreach_log_level
Definition: ip6_neighbor.c:1417
icmp6_neighbor_discovery_option_type_t
enum icmp6_neighbor_discovery_option_type icmp6_neighbor_discovery_option_type_t
vlib_process_signal_event_data
static void * vlib_process_signal_event_data(vlib_main_t *vm, uword node_index, uword type_opaque, uword n_data_elts, uword n_data_elt_bytes)
Definition: node_funcs.h:858
ELOG_DATA
#define ELOG_DATA(em, f)
Definition: elog.h:484
ip6_main_t::table_bind_callbacks
ip6_table_bind_callback_t * table_bind_callbacks
Functions to call when interface to table biding changes.
Definition: ip6.h:218
ip6_address_compare
int ip6_address_compare(ip6_address_t *a1, ip6_address_t *a2)
Definition: ip46_cli.c:60
throttle_seed
static u64 throttle_seed(throttle_t *t, u32 thread_index, f64 time_now)
Definition: throttle.h:41
PREDICT_FALSE
#define PREDICT_FALSE(x)
Definition: clib.h:111
IP_LOOKUP_NEXT_GLEAN
This packet matches an "interface route" and packets need to be passed to ARP to find rewrite string ...
Definition: adj.h:68
vnet_sw_interface_t::flags
vnet_sw_interface_flags_t flags
Definition: interface.h:684
vnet_main
vnet_main_t vnet_main
Definition: misc.c:43
ip6_discover_neighbor_error_t
ip6_discover_neighbor_error_t
Definition: ip6_neighbor.c:3164
ip6_radv_t::adv_other_flag
int adv_other_flag
Definition: ip6_neighbor.c:86
src
vl_api_ip4_address_t src
Definition: ipsec_gre.api:38
vlib_node_runtime_t::node_index
u32 node_index
Node index.
Definition: node.h:495
ip6_radv_t::address_to_prefix_index
mhash_t address_to_prefix_index
Definition: ip6_neighbor.c:102
ra_report_t::router_lifetime_in_sec
u16 router_lifetime_in_sec
Definition: ip6_neighbor.h:127
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:218
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:368
ra_report_t::prefixes
ra_report_prefix_info_t * prefixes
Definition: ip6_neighbor.h:132
mac_address_t_
Definition: mac_address.h:21
ip6_discover_neighbor
static uword ip6_discover_neighbor(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ip6_neighbor.c:3347
ra_report_prefix_info_t::valid_time
u32 valid_time
Definition: ip6_neighbor.h:117
ip6_main_t::add_del_interface_address_callbacks
ip6_add_del_interface_address_callback_t * add_del_interface_address_callbacks
Definition: ip6.h:215
ra_set_publisher_node
void ra_set_publisher_node(uword node_index, uword event_type)
Definition: ip6_neighbor.c:331
ip6_neighbor.h
vnet_add_del_ip6_nd_change_event
int vnet_add_del_ip6_nd_change_event(vnet_main_t *vnm, ip6_nd_change_event_cb_t data_callback, u32 pid, void *address_arg, uword node_index, uword type_opaque, uword data, int is_add)
Definition: ip6_neighbor.c:4692
unformat_mac_address_t
uword unformat_mac_address_t(unformat_input_t *input, va_list *args)
Definition: mac_address.c:37
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:2532
ip6_radv_t::failed_device_check
int failed_device_check
Definition: ip6_neighbor.c:117
FIB_ROUTE_PATH_FLAG_NONE
Definition: fib_types.h:320
priority
i32 priority
Definition: ipsec.api:91
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:91
wc_nd_report_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.h:93
pool_free
#define pool_free(p)
Free a pool.
Definition: pool.h:407
ip6_radv_t::mldp_group_pool
ip6_mldp_group_t * mldp_group_pool
Definition: ip6_neighbor.c:105
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:1161
wc_nd_set_publisher_node
void wc_nd_set_publisher_node(uword node_index, uword event_type)
Definition: ip6_neighbor.c:300
enable_ip6_interface
clib_error_t * enable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:4141
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:232
icmp6_neighbor_solicitation_or_advertisement_next_t
icmp6_neighbor_solicitation_or_advertisement_next_t
Definition: ip6_neighbor.c:1153
ip6_radv_t::adv_managed_flag
int adv_managed_flag
Definition: ip6_neighbor.c:85
ip6_main_t
Definition: ip6.h:167
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:3113
IP_LOOKUP_NEXT_ARP
This packet matches an "incomplete adjacency" and packets need to be passed to ARP to find rewrite st...
Definition: adj.h:63
ip6_src_address_for_packet
static int ip6_src_address_for_packet(ip_lookup_main_t *lm, u32 sw_if_index, const ip6_address_t *dst, ip6_address_t *src)
Definition: ip6.h:308
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:133
ip6_radv_t::n_solicitations_dropped
u32 n_solicitations_dropped
Definition: ip6_neighbor.c:155
IP_LOOKUP_NEXT_DROP
Adjacency to drop this packet.
Definition: adj.h:53
VLIB_REGISTER_NODE
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:169
FIB_PROTOCOL_IP6
Definition: fib_types.h:38
vlib_buffer_copy_trace_flag
static void vlib_buffer_copy_trace_flag(vlib_main_t *vm, vlib_buffer_t *b, u32 bi_target)
Definition: trace_funcs.h:147
UNFORMAT_END_OF_INPUT
#define UNFORMAT_END_OF_INPUT
Definition: format.h:144
mhash_init
void mhash_init(mhash_t *h, uword n_value_bytes, uword n_key_bytes)
Definition: mhash.c:168
get_mac_address
static u8 get_mac_address(u32 sw_if_index, u8 *address)
Definition: ip6_neighbor.c:2299
vlib_frame_t::n_vectors
u16 n_vectors
Definition: node.h:395
vlib_get_thread_index
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:212
format_ip6_address
format_function_t format_ip6_address
Definition: format.h:93
ip6a_zero
static ip6_address_t ip6a_zero
Definition: ip6_neighbor.c:236
vm
vlib_main_t * vm
Definition: buffer.c:312
ra_publish
static int ra_publish(ra_report_t *r)
Definition: ip6_neighbor.c:308
vnet_hw_interface_t
Definition: interface.h:488
ip6_mldp_group_t::mcast_address
ip6_address_t mcast_address
Definition: ip6_neighbor.c:74
ip6_mfib.h
ip6_neighbor_adj_fib_remove
static void ip6_neighbor_adj_fib_remove(ip6_neighbor_t *n, u32 fib_index)
Definition: ip6_neighbor.c:373
log_level_t
log_level_t
Definition: ip6_neighbor.c:1427
vec_free
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:341
icmp6_send_router_solicitation_params_t::mrt
u32 mrt
Definition: ip6_neighbor.h:103
IP_LOOKUP_NEXT_MCAST_MIDCHAIN
Multicast Midchain Adjacency.
Definition: adj.h:89
ip6_radv_t::curr_hop_limit
u8 curr_hop_limit
Definition: ip6_neighbor.c:84
ICMP6_NEIGHBOR_SOLICITATION_N_NEXT
Definition: ip6_neighbor.c:1157
ip6_radv_t::sleep_interval
f64 sleep_interval
Definition: ip6_neighbor.c:163
ICMP6_ND_EVENT_INIT
Definition: ip6_neighbor.c:221
clib_warning
#define clib_warning(format, args...)
Definition: error.h:59
ip6_mldp_group_t::mcast_source_address_pool
ip6_address_t * mcast_source_address_pool
Definition: ip6_neighbor.c:76
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:89
ip_lookup_main_t
Definition: lookup.h:122
ip6_neighbor_table_bind
static void ip6_neighbor_table_bind(ip6_main_t *im, uword opaque, u32 sw_if_index, u32 new_fib_index, u32 old_fib_index)
Definition: ip6_neighbor.c:4572
ip6_icmp_neighbor_discovery_event_data_t::up_down_swindex
u32 up_down_swindex
Definition: ip6_neighbor.c:229
DEF_CURR_HOP_LIMIT
#define DEF_CURR_HOP_LIMIT
Definition: ip6_neighbor.c:127
vlib_main_t::elog_main
elog_main_t elog_main
Definition: main.h:172
ip6_radv_t::adv_link_layer_address
int adv_link_layer_address
Definition: ip6_neighbor.c:115
fib_node_index_t
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:30
icmp6_send_router_solicitation_params_t
Definition: ip6_neighbor.h:100
pending_resolution_t::pid
u32 pid
Definition: arp.c:70
ethernet_header_t
Definition: packet.h:52
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:1084
ip6_neighbor_t::fib_entry_index
fib_node_index_t fib_entry_index
Definition: ip6_neighbor.h:39
adj_index_t
u32 adj_index_t
An index for adjacencies.
Definition: adj_types.h:30
ARRAY_LEN
#define ARRAY_LEN(x)
Definition: clib.h:62
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:465
l2_bridge_domain_t::mac_by_ip6
uword * mac_by_ip6
Definition: l2_bd.h:102
ELOG_TYPE_DECLARE
#define ELOG_TYPE_DECLARE(f)
Definition: elog.h:442
vlib_get_node_by_name
vlib_node_t * vlib_get_node_by_name(vlib_main_t *vm, u8 *name)
Definition: node.c:45
ra_report_t::mtu
u32 mtu
Definition: ip6_neighbor.h:131
check_send_rs
static bool check_send_rs(vlib_main_t *vm, ip6_radv_t *radv_info, f64 current_time, f64 *due_time)
Definition: ip6_neighbor.c:2390
IP_NEIGHBOR_FLAG_NO_FIB_ENTRY
Definition: ip_neighbor.h:43
ra_report_t::current_hop_limit
u8 current_hop_limit
Definition: ip6_neighbor.h:125
ip6_next_header
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:412
ip6_ll_table.h
ip6_ll_prefix_t_::ilp_addr
ip6_address_t ilp_addr
the IP6 address
Definition: ip6_ll_types.h:34
IP6_DISCOVER_NEIGHBOR_ERROR_DROP
Definition: ip6_neighbor.c:3166
fib_table.h
VLIB_CLI_COMMAND
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:155
ip6_radv_t::initial_adverts_count
u32 initial_adverts_count
Definition: ip6_neighbor.c:148
IP_LOOKUP_NEXT_MIDCHAIN
This packets follow a mid-chain adjacency.
Definition: adj.h:76
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:132
vnet_main_t
Definition: vnet.h:51
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:947
ip6_add_del_interface_address_callback_t::function
ip6_add_del_interface_address_function_t * function
Definition: ip6.h:104
mac_address_t_::bytes
u8 bytes[6]
Definition: mac_address.h:25
ip6_radv_prefix_t::valid_lifetime_expires
f64 valid_lifetime_expires
Definition: ip6_neighbor.c:54
MAX_INITIAL_RTR_ADVERTISEMENTS
#define MAX_INITIAL_RTR_ADVERTISEMENTS
Definition: ip6_neighbor.c:132
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:514
ip6_radv_t::link_local_address
ip6_address_t link_local_address
Definition: ip6_neighbor.c:158
ASSERT
#define ASSERT(truth)
Definition: error_bootstrap.h:69
ip6_radv_prefix_t::enabled
int enabled
Definition: ip6_neighbor.c:58
send_rs_process_node
vlib_node_registration_t send_rs_process_node
(constructor) VLIB_REGISTER_NODE (send_rs_process_node)
Definition: ip6_neighbor.c:2489
ip6_neighbor_main_t::neighbor_delete_rotor
u32 neighbor_delete_rotor
Definition: ip6_neighbor.c:207
l2_bridge_domain_t
Definition: l2_bd.h:63
ip6_radv_t::prefix_option
int prefix_option
Definition: ip6_neighbor.c:116
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:28
ip6_neighbor_main_t
Definition: ip6_neighbor.c:182
ip6_main
ip6_main_t ip6_main
Definition: ip6_forward.c:2688
ip6_main_t::lookup_main
ip_lookup_main_t lookup_main
Definition: ip6.h:179
ip6_add_del_interface_address_callback_t::function_opaque
uword function_opaque
Definition: ip6.h:105
ip6_neighbor_key_t::pad
u32 pad
Definition: ip6_neighbor.h:30
is_add
u8 is_add
Definition: ipsec_gre.api:36
ip6_radv_t::n_advertisements_sent
u32 n_advertisements_sent
Definition: ip6_neighbor.c:153
ip6_radv_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.c:111
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:3889
ip6_neighbor_key_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.h:29
IP_NEIGHBOR_FLAG_DYNAMIC
Definition: ip_neighbor.h:42
vlib_register_node
u32 vlib_register_node(vlib_main_t *vm, vlib_node_registration_t *r)
Definition: node.c:520
vnet_set_ip6_ethernet_neighbor
int vnet_set_ip6_ethernet_neighbor(vlib_main_t *vm, u32 sw_if_index, const ip6_address_t *a, const mac_address_t *mac, ip_neighbor_flags_t flags)
Definition: ip6_neighbor.c:772
ip6_radv_prefix_t
Definition: ip6_neighbor.c:43
ip6_header_t
Definition: ip6_packet.h:369
ip6_radv_t::min_delay_between_radv
f64 min_delay_between_radv
Definition: ip6_neighbor.c:139
ip6_radv_prefix_t::adv_on_link_flag
int adv_on_link_flag
Definition: ip6_neighbor.c:48
ip6_neighbor_main_t::wc_ip6_nd_publisher_et
uword wc_ip6_nd_publisher_et
Definition: ip6_neighbor.c:211
DEF_MIN_RADV_INTERVAL
#define DEF_MIN_RADV_INTERVAL
Definition: ip6_neighbor.c:126
icmp6_router_solicitation
static_always_inline uword icmp6_router_solicitation(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ip6_neighbor.c:1499
ip6_neighbor_sort
static int ip6_neighbor_sort(void *a1, void *a2)
Definition: ip6_neighbor.c:977
adj_mcast.h
send_rs_process
static uword send_rs_process(vlib_main_t *vm, vlib_node_runtime_t *rt, vlib_frame_t *f0)
Definition: ip6_neighbor.c:2449
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:201
ip6_radv_t::adv_router_lifetime_in_sec
u16 adv_router_lifetime_in_sec
Definition: ip6_neighbor.c:87
random_f64
static f64 random_f64(u32 *seed)
Generate f64 random number in the interval [0,1].
Definition: random.h:145
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:248
vnet_sw_interface_t::hw_if_index
u32 hw_if_index
Definition: interface.h:698
ip6_ll_prefix_t_
Aggregrate type for a prefix in the IPv6 Link-local table.
Definition: ip6_ll_types.h:24
count
size_t count
Definition: vapi.c:47
ip6_radv_prefix_t::deprecated_prefix_flag
int deprecated_prefix_flag
Definition: ip6_neighbor.c:59
ip6_neighbor_t::time_last_updated
f64 time_last_updated
Definition: ip6_neighbor.h:38
ra_report_t::flags
u8 flags
Definition: ip6_neighbor.h:126
ip6_multicast_link_local_group_id_t
ip6_multicast_link_local_group_id_t
Definition: ip6_packet.h:164
ip6_address_is_link_local_unicast
static uword ip6_address_is_link_local_unicast(const ip6_address_t *a)
Definition: ip6_packet.h:328
ethernet_interface
Definition: ethernet.h:136
ip6_add_del_interface_address_callback_t
Definition: ip6.h:102
FIB_SOURCE_INTERFACE
Route added as a result of interface configuration.
Definition: fib_entry.h:54
fib_table_entry_path_remove
void fib_table_entry_path_remove(u32 fib_index, const fib_prefix_t *prefix, fib_source_t source, dpo_proto_t next_hop_proto, const ip46_address_t *next_hop, u32 next_hop_sw_if_index, u32 next_hop_fib_index, u32 next_hop_weight, fib_route_path_flags_t path_flags)
remove one path to an entry (aka route) in the FIB.
Definition: fib_table.c:682
ip6_radv_t::keep_sending_rs
u8 keep_sending_rs
Definition: ip6_neighbor.c:161
ip6_neighbor_main_t::pending_resolutions_by_address
mhash_t pending_resolutions_by_address
Definition: ip6_neighbor.c:188
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:3104
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:565
pending_resolution_t::next_index
u32 next_index
Definition: arp.c:64
vlib_get_main
static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:23
IP_NEIGHBOR_FLAG_STATIC
Definition: ip_neighbor.h:41
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:264
ip6_radv_t::buffer
vlib_buffer_t * buffer
Definition: ip6_neighbor.c:167
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:57
ip6_radv_t::params
icmp6_send_router_solicitation_params_t params
Definition: ip6_neighbor.c:162
clib_error_t
Definition: clib_error.h:21
unformat_parse_error
#define unformat_parse_error(input)
Definition: format.h:268
ip6_neighbor_get_link_local_address
ip6_address_t ip6_neighbor_get_link_local_address(u32 sw_if_index)
Definition: ip6_neighbor.c:242
force_reuse_neighbor_entry
static ip6_neighbor_t * force_reuse_neighbor_entry(void)
Definition: ip6_neighbor.c:741
vlib_node_registration_t
struct _vlib_node_registration vlib_node_registration_t
ip6_header_t::ip_version_traffic_class_and_flow_label
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:372
ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP
Definition: ip6_neighbor.c:1155
ethernet_ndp_change_mac
void ethernet_ndp_change_mac(u32 sw_if_index)
Definition: ip6_neighbor.c:4926
ra_report_prefix_info_t::flags
u8 flags
Definition: ip6_neighbor.h:116
fib_entry_get_flags_for_source
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:1810
IP_LOOKUP_NEXT_ICMP_ERROR
This packets needs to go to ICMP error.
Definition: adj.h:79
IP_LOOKUP_NEXT_LOCAL
This packet is for one of our own IP addresses.
Definition: adj.h:58
ip6_icmp_router_solicitation_node
static vlib_node_registration_t ip6_icmp_router_solicitation_node
(constructor) VLIB_REGISTER_NODE (ip6_icmp_router_solicitation_node)
Definition: ip6_neighbor.c:2888
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:47
ip6_neighbor_send_mldpv2_report
static void ip6_neighbor_send_mldpv2_report(u32 sw_if_index)
Definition: ip6_neighbor.c:2735
l2input_main
l2input_main_t l2input_main
Definition: l2_input.c:128
ip6_icmp_neighbor_discovery_event_node
vlib_node_registration_t ip6_icmp_neighbor_discovery_event_node
Definition: ip6_neighbor.c:3096
ip6_header_t::payload_length
u16 payload_length
Definition: ip6_packet.h:376
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:493
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:966
ip6_address_is_global_unicast
static uword ip6_address_is_global_unicast(const ip6_address_t *a)
Definition: ip6_packet.h:342
ethernet_get_interface
ethernet_interface_t * ethernet_get_interface(ethernet_main_t *em, u32 hw_if_index)
Definition: interface.c:886
ip_adjacency_t_::sub_type
union ip_adjacency_t_::@46 sub_type
vnet_unset_ip6_ethernet_neighbor
int vnet_unset_ip6_ethernet_neighbor(vlib_main_t *vm, u32 sw_if_index, const ip6_address_t *a)
Definition: ip6_neighbor.c:924
ip6_set_solicited_node_multicast_address
static void ip6_set_solicited_node_multicast_address(ip6_address_t *a, u32 id)
Definition: ip6_packet.h:202
FIB_NODE_INDEX_INVALID
#define FIB_NODE_INDEX_INVALID
Definition: fib_types.h:31
ip6_neighbor_t::key
ip6_neighbor_key_t key
Definition: ip6_neighbor.h:35
FIB_ROUTE_PATH_LOCAL
A for-us/local path.
Definition: fib_types.h:332
icmp6_send_router_solicitation_params_t::mrc
u32 mrc
Definition: ip6_neighbor.h:104
elog_string
u32 elog_string(elog_main_t *em, char *fmt,...)
add a string to the event-log string table
Definition: elog.c:562
icmp6_register_type
void icmp6_register_type(vlib_main_t *vm, icmp6_type_t type, u32 node_index)
Definition: icmp6.c:750
vec_len
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
Definition: vec_bootstrap.h:143
ip_adjacency_t_::lookup_next_index
ip_lookup_next_t lookup_next_index
Next hop after ip4-lookup.
Definition: adj.h:236
icmp6_input_trace_t
Definition: icmp6.h:60
VLIB_BUFFER_TRACE_TRAJECTORY_INIT
#define VLIB_BUFFER_TRACE_TRAJECTORY_INIT(b)
Definition: buffer.h:451
vlib_main_t
Definition: main.h:68
vlib_buffer_t
VLIB buffer representation.
Definition: buffer.h:102
uword
u64 uword
Definition: types.h:112
ip6_neighbor_public_main
ip6_neighbor_public_main_t ip6_neighbor_public_main
Definition: ip6_neighbor.c:235
format_vlib_time
format_function_t format_vlib_time
Definition: node_funcs.h:1175
vec_sort_with_function
#define vec_sort_with_function(vec, f)
Sort a vector using the supplied element comparison function.
Definition: vec.h:980
unformat_free
static void unformat_free(unformat_input_t *i)
Definition: format.h:162
ra_report_t::slla
u8 slla[6]
Definition: ip6_neighbor.h:130
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:3401
vlib_node_t
Definition: node.h:257
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:4492
vlib_frame_vector_args
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:274
ip6_ll_prefix_t_::ilp_sw_if_index
u32 ilp_sw_if_index
The interface.
Definition: ip6_ll_types.h:29
ip6_table_bind_callback_t::function
ip6_table_bind_function_t * function
Definition: ip6.h:114
icmp6_send_router_solicitation_params_t::mrd
u32 mrd
Definition: ip6_neighbor.h:105
h
h
Definition: flowhash_template.h:372
vlib_cli_command_t
Definition: cli.h:91
ip6_ll_table_entry_delete
void ip6_ll_table_entry_delete(const ip6_ll_prefix_t *ilp)
Delete a IP6 link-local entry.
Definition: ip6_ll_table.c:139
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:81
ip6_address_copy
static void ip6_address_copy(ip6_address_t *dst, const ip6_address_t *src)
Definition: ip6_packet.h:185
l2input_main_t::bd_configs
l2_bridge_domain_t * bd_configs
Definition: l2_input.h:64
prefix
typedef prefix
Definition: ip_types.api:35
ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP
#define ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP
ip6_glean_node
vlib_node_registration_t ip6_glean_node
(constructor) VLIB_REGISTER_NODE (ip6_glean_node)
Definition: ip6_neighbor.c:3367
ip6_radv_prefix_t::decrement_lifetime_flag
int decrement_lifetime_flag
Definition: ip6_neighbor.c:60
hash_get_mem
#define hash_get_mem(h, key)
Definition: hash.h:269
ip6_neighbor_set_unset_rpc_args_t::addr
ip6_address_t addr
Definition: ip6_neighbor.c:409
offset
struct clib_bihash_value offset
template key/value backing page structure
ip6_address_is_unspecified
static uword ip6_address_is_unspecified(const ip6_address_t *a)
Definition: ip6_packet.h:312
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:3141
vnet_buffer
#define vnet_buffer(b)
Definition: buffer.h:369
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:573
ip6_radv_t::initial_adverts_interval
f64 initial_adverts_interval
Definition: ip6_neighbor.c:149
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
vnet_sw_interface_t::type
vnet_sw_interface_type_t type
Definition: interface.h:682
ip6_radv_t::mcast_adj_index
adj_index_t mcast_adj_index
Definition: ip6_neighbor.c:122
pending_resolution_t::node_index
uword node_index
Definition: arp.c:65
ip6_icmp_neighbor_discovery_event_type_t
ip6_icmp_neighbor_discovery_event_type_t
Definition: ip6_neighbor.c:219
format_mac_address_t
u8 * format_mac_address_t(u8 *s, va_list *args)
Definition: mac_address.c:27
ip6_neighbor_t::flags
ip_neighbor_flags_t flags
Definition: ip6_neighbor.h:37
vnet_hw_interface_t::output_node_index
u32 output_node_index
Definition: interface.h:506
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
ip6_discover_neighbor_node
vlib_node_registration_t ip6_discover_neighbor_node
(constructor) VLIB_REGISTER_NODE (ip6_discover_neighbor_node)
Definition: ip6_neighbor.c:3382
vec_foreach
#define vec_foreach(var, vec)
Vector iterator.
Definition: vec_bootstrap.h:185
pending_resolution_t::data_callback
arp_change_event_cb_t data_callback
Definition: arp.c:69
ip6_ethernet_update_adjacency
void ip6_ethernet_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Definition: ip6_neighbor.c:621
ip6_neighbor_t
Definition: ip6_neighbor.h:33
ip6_forward_next_trace
void ip6_forward_next_trace(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, vlib_rx_or_tx_t which_adj_index)
Definition: ip6_forward.c:855
vlib_node_runtime_t::flags
u16 flags
Copy of main node flags.
Definition: node.h:508
ip6_radv_prefix_t::adv_valid_lifetime_in_secs
u32 adv_valid_lifetime_in_secs
Definition: ip6_neighbor.c:50
ip6_multicast_ethernet_address
static void ip6_multicast_ethernet_address(u8 *ethernet_address, u32 group_id)
Definition: ip6_packet.h:231
ip6_mldp_group_t::type
u8 type
Definition: ip6_neighbor.c:73
ip6_radv_t::initial_adverts_sent
u32 initial_adverts_sent
Definition: ip6_neighbor.c:150
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:175
ip6_nd_find
static ip6_neighbor_t * ip6_nd_find(u32 sw_if_index, const ip6_address_t *addr)
Definition: ip6_neighbor.c:536
ip6_neighbor_main_t::mac_changes_by_address
mhash_t mac_changes_by_address
Definition: ip6_neighbor.c:192
mac_address_cmp
static_always_inline int mac_address_cmp(const mac_address_t *a, const mac_address_t *b)
Definition: mac_address.h:134
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:555
MAX_INITIAL_RTR_ADVERT_INTERVAL
#define MAX_INITIAL_RTR_ADVERT_INTERVAL
Definition: ip6_neighbor.c:131
VLIB_NODE_FLAG_TRACE
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:301
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:486
ip6_ll_table_entry_update
fib_node_index_t ip6_ll_table_entry_update(const ip6_ll_prefix_t *ilp, fib_route_path_flags_t flags)
Update an entry in the table.
Definition: ip6_ll_table.c:105
vlib_buffer_alloc
static u32 vlib_buffer_alloc(vlib_main_t *vm, u32 *buffers, u32 n_buffers)
Allocate buffers into supplied array.
Definition: buffer_funcs.h:612
IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS
Definition: ip6_neighbor.c:3168
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:3640
ip6_radv_t::max_rtr_default_lifetime
f64 max_rtr_default_lifetime
Definition: ip6_neighbor.c:141
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:3080
ip6_neighbor_main_t::neighbor_pool
ip6_neighbor_t * neighbor_pool
Definition: ip6_neighbor.c:197
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:298
mac
vl_api_mac_address_t mac
Definition: gbp.api:120
vlib_cli_output
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:762
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:85
pending_resolution_t::data
uword data
Definition: arp.c:67
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:1919
ip6_sw_interface_enable_disable
void ip6_sw_interface_enable_disable(u32 sw_if_index, u32 is_enable)
Definition: ip6_forward.c:146
ip6_address_t
Definition: ip6_packet.h:46
unformat
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:972
MAX_DEF_RTR_LIFETIME
#define MAX_DEF_RTR_LIFETIME
Definition: ip6_neighbor.c:129
ip6_radv_t::adv_link_mtu
u32 adv_link_mtu
Definition: ip6_neighbor.c:92
VLIB_RX
Definition: defs.h:46
ip6_neighbor_main
static ip6_neighbor_main_t ip6_neighbor_main
Definition: ip6_neighbor.c:234
ip6_neighbor_main_t::mac_changes
pending_resolution_t * mac_changes
Definition: ip6_neighbor.c:193
ip6_radv_t::seed
u32 seed
Definition: ip6_neighbor.c:119
ip6_header_t::dst_address
ip6_address_t dst_address
Definition: ip6_packet.h:385
ip6_interface_enabled
int ip6_interface_enabled(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:4126
unformat_check_input
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:170
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:192
ip6_icmp_neighbor_discovery_event_data_t::add_del_swindex
u32 add_del_swindex
Definition: ip6_neighbor.c:226
FIB_SOURCE_IP6_ND_PROXY
IPv6 Proxy ND.
Definition: fib_entry.h:98
ip_interface_address_t::next_this_sw_interface
u32 next_this_sw_interface
Definition: lookup.h:106
ip6_icmp_neighbor_discovery_event_data_t
Definition: ip6_neighbor.c:224
ip6_set_neighbor_limit
clib_error_t * ip6_set_neighbor_limit(u32 neighbor_limit)
Definition: ip6_neighbor.c:4563
ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY
Definition: ip6_neighbor.c:1156
format_icmp6_input_trace
format_function_t format_icmp6_input_trace
Definition: icmp6.h:65
throttle_check
static int throttle_check(throttle_t *t, u32 thread_index, u64 hash, u64 seed)
Definition: throttle.h:54
format_ip6_forward_next_trace
u8 * format_ip6_forward_next_trace(u8 *s, va_list *args)
Definition: ip6_forward.c:803
ip6_radv_prefix_t::prefix_len
u8 prefix_len
Definition: ip6_neighbor.c:47
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:626
pool_elts
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128