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Vector Packet Processing
ip6_neighbor.c
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1 /*
2  * ip/ip6_neighbor.c: IP6 neighbor handling
3  *
4  * Copyright (c) 2010 Cisco and/or its affiliates.
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #include <vnet/ip/ip.h>
19 #include <vnet/ip/ip6_neighbor.h>
20 #include <vnet/ethernet/ethernet.h>
21 #include <vppinfra/mhash.h>
22 #include <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 
30 /**
31  * @file
32  * @brief IPv6 Neighbor Adjacency and Neighbor Discovery.
33  *
34  * The files contains the API and CLI code for managing IPv6 neighbor
35  * adjacency tables and neighbor discovery logic.
36  */
37 
38 /* can't use sizeof link_layer_address, that's 8 */
39 #define ETHER_MAC_ADDR_LEN 6
40 
41 /* advertised prefix option */
42 typedef struct
43 {
44  /* basic advertised information */
45  ip6_address_t prefix;
46  u8 prefix_len;
47  int adv_on_link_flag;
48  int adv_autonomous_flag;
49  u32 adv_valid_lifetime_in_secs;
50  u32 adv_pref_lifetime_in_secs;
51 
52  /* advertised values are computed from these times if decrementing */
53  f64 valid_lifetime_expires;
54  f64 pref_lifetime_expires;
55 
56  /* local information */
57  int enabled;
58  int deprecated_prefix_flag;
59  int decrement_lifetime_flag;
60 
61 #define MIN_ADV_VALID_LIFETIME 7203 /* seconds */
62 #define DEF_ADV_VALID_LIFETIME 2592000
63 #define DEF_ADV_PREF_LIFETIME 604800
64 
65  /* extensions are added here, mobile, DNS etc.. */
66 } ip6_radv_prefix_t;
67 
68 
69 typedef struct
70 {
71  /* group information */
72  u8 type;
73  ip6_address_t mcast_address;
74  u16 num_sources;
75  ip6_address_t *mcast_source_address_pool;
76 } ip6_mldp_group_t;
77 
78 /* configured router advertisement information per ipv6 interface */
79 typedef struct
80 {
81 
82  /* advertised config information, zero means unspecified */
83  u8 curr_hop_limit;
84  int adv_managed_flag;
85  int adv_other_flag;
86  u16 adv_router_lifetime_in_sec;
87  u32 adv_neighbor_reachable_time_in_msec;
88  u32 adv_time_in_msec_between_retransmitted_neighbor_solicitations;
89 
90  /* mtu option */
91  u32 adv_link_mtu;
92 
93  /* source link layer option */
94  u8 link_layer_address[8];
95  u8 link_layer_addr_len;
96 
97  /* prefix option */
98  ip6_radv_prefix_t *adv_prefixes_pool;
99 
100  /* Hash table mapping address to index in interface advertised prefix pool. */
101  mhash_t address_to_prefix_index;
102 
103  /* MLDP group information */
104  ip6_mldp_group_t *mldp_group_pool;
105 
106  /* Hash table mapping address to index in mldp address pool. */
107  mhash_t address_to_mldp_index;
108 
109  /* local information */
110  u32 sw_if_index;
111  int send_radv; /* radv on/off on this interface - set by config */
112  int cease_radv; /* we are ceasing to send - set byf config */
113  int send_unicast;
114  int adv_link_layer_address;
115  int prefix_option;
116  int failed_device_check;
117  int all_routers_mcast;
118  u32 seed;
119  u64 randomizer;
120  int ref_count;
121  adj_index_t mcast_adj_index;
122 
123  /* timing information */
124 #define DEF_MAX_RADV_INTERVAL 200
125 #define DEF_MIN_RADV_INTERVAL .75 * DEF_MAX_RADV_INTERVAL
126 #define DEF_CURR_HOP_LIMIT 64
127 #define DEF_DEF_RTR_LIFETIME 3 * DEF_MAX_RADV_INTERVAL
128 #define MAX_DEF_RTR_LIFETIME 9000
129 
130 #define MAX_INITIAL_RTR_ADVERT_INTERVAL 16 /* seconds */
131 #define MAX_INITIAL_RTR_ADVERTISEMENTS 3 /*transmissions */
132 #define MIN_DELAY_BETWEEN_RAS 3 /* seconds */
133 #define MAX_DELAY_BETWEEN_RAS 1800 /* seconds */
134 #define MAX_RA_DELAY_TIME .5 /* seconds */
135 
136  f64 max_radv_interval;
137  f64 min_radv_interval;
138  f64 min_delay_between_radv;
139  f64 max_delay_between_radv;
140  f64 max_rtr_default_lifetime;
141 
142  f64 last_radv_time;
143  f64 last_multicast_time;
144  f64 next_multicast_time;
145 
146 
147  u32 initial_adverts_count;
148  f64 initial_adverts_interval;
149  u32 initial_adverts_sent;
150 
151  /* stats */
152  u32 n_advertisements_sent;
153  u32 n_solicitations_rcvd;
154  u32 n_solicitations_dropped;
155 
156  /* Link local address to use (defaults to underlying physical for logical interfaces */
157  ip6_address_t link_local_address;
158 
159  /* router solicitations sending state */
160  u8 keep_sending_rs; /* when true then next fields are valid */
161  icmp6_send_router_solicitation_params_t params;
162  f64 sleep_interval;
163  f64 due_time;
164  u32 n_left;
165  f64 start_time;
166  vlib_buffer_t *buffer;
167 } ip6_radv_t;
168 
169 typedef struct
170 {
171  u32 next_index;
172  uword node_index;
173  uword type_opaque;
174  uword data;
175  /* Used for nd event notification only */
176  void *data_callback;
177  u32 pid;
178 } pending_resolution_t;
179 
180 
181 typedef struct
182 {
183  /* Hash tables mapping name to opcode. */
184  uword *opcode_by_name;
185 
186  /* lite beer "glean" adjacency handling */
187  mhash_t pending_resolutions_by_address;
188  pending_resolution_t *pending_resolutions;
189 
190  /* Mac address change notification */
191  mhash_t mac_changes_by_address;
192  pending_resolution_t *mac_changes;
193 
194  u32 *neighbor_input_next_index_by_hw_if_index;
195 
196  ip6_neighbor_t *neighbor_pool;
197 
198  mhash_t neighbor_index_by_key;
199 
200  u32 *if_radv_pool_index_by_sw_if_index;
201 
202  ip6_radv_t *if_radv_pool;
203 
204  /* Neighbor attack mitigation */
205  u32 limit_neighbor_cache_size;
206  u32 neighbor_delete_rotor;
207 
208  /* Wildcard nd report publisher */
209  uword wc_ip6_nd_publisher_node;
210  uword wc_ip6_nd_publisher_et;
211 
212  /* Router advertisement report publisher */
213  uword ip6_ra_publisher_node;
214  uword ip6_ra_publisher_et;
215 } ip6_neighbor_main_t;
216 
217 /* ipv6 neighbor discovery - timer/event types */
218 typedef enum
219 {
220  ICMP6_ND_EVENT_INIT,
221 } ip6_icmp_neighbor_discovery_event_type_t;
222 
223 typedef union
224 {
225  u32 add_del_swindex;
226  struct
227  {
228  u32 up_down_swindex;
229  u32 fib_index;
230  } up_down_event;
231 } ip6_icmp_neighbor_discovery_event_data_t;
232 
233 static ip6_neighbor_main_t ip6_neighbor_main;
234 ip6_neighbor_public_main_t ip6_neighbor_public_main;
235 static ip6_address_t ip6a_zero; /* ip6 address 0 */
236 
237 static void wc_nd_signal_report (wc_nd_report_t * r);
238 static void ra_signal_report (ra_report_t * r);
239 
240 ip6_address_t
241 ip6_neighbor_get_link_local_address (u32 sw_if_index)
242 {
243  static ip6_address_t empty_address = { {0} };
244  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
245  ip6_radv_t *radv_info;
246  u32 ri;
247 
248  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
249  if (ri == ~0)
250  {
251  clib_warning ("IPv6 is not enabled for sw_if_index %d", sw_if_index);
252  return empty_address;
253  }
254  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
255  if (radv_info == NULL)
256  {
257  clib_warning ("Internal error");
258  return empty_address;
259  }
260  return radv_info->link_local_address;
261 }
262 
263 /**
264  * @brief publish wildcard arp event
265  * @param sw_if_index The interface on which the ARP entires are acted
266  */
267 static int
268 vnet_nd_wc_publish (u32 sw_if_index, u8 * mac, ip6_address_t * ip6)
269 {
270  wc_nd_report_t r = {
271  .sw_if_index = sw_if_index,
272  .ip6 = *ip6,
273  };
274  memcpy (r.mac, mac, sizeof r.mac);
275 
276  void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
277  vl_api_rpc_call_main_thread (wc_nd_signal_report, (u8 *) & r, sizeof r);
278  return 0;
279 }
280 
281 static void
282 wc_nd_signal_report (wc_nd_report_t * r)
283 {
284  vlib_main_t *vm = vlib_get_main ();
285  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
286  uword ni = nm->wc_ip6_nd_publisher_node;
287  uword et = nm->wc_ip6_nd_publisher_et;
288 
289  if (ni == (uword) ~ 0)
290  return;
291  wc_nd_report_t *q =
292  vlib_process_signal_event_data (vm, ni, et, 1, sizeof *q);
293 
294  *q = *r;
295 }
296 
297 void
298 wc_nd_set_publisher_node (uword node_index, uword event_type)
299 {
300  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
301  nm->wc_ip6_nd_publisher_node = node_index;
302  nm->wc_ip6_nd_publisher_et = event_type;
303 }
304 
305 static int
306 ra_publish (ra_report_t * r)
307 {
308  void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
309  vl_api_rpc_call_main_thread (ra_signal_report, (u8 *) r, sizeof *r);
310  return 0;
311 }
312 
313 static void
314 ra_signal_report (ra_report_t * r)
315 {
316  vlib_main_t *vm = vlib_get_main ();
317  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
318  uword ni = nm->ip6_ra_publisher_node;
319  uword et = nm->ip6_ra_publisher_et;
320 
321  if (ni == (uword) ~ 0)
322  return;
323  ra_report_t *q = vlib_process_signal_event_data (vm, ni, et, 1, sizeof *q);
324 
325  *q = *r;
326 }
327 
328 void
329 ra_set_publisher_node (uword node_index, uword event_type)
330 {
331  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
332  nm->ip6_ra_publisher_node = node_index;
333  nm->ip6_ra_publisher_et = event_type;
334 }
335 
336 static u8 *
337 format_ip6_neighbor_ip6_entry (u8 * s, va_list * va)
338 {
339  vlib_main_t *vm = va_arg (*va, vlib_main_t *);
340  ip6_neighbor_t *n = va_arg (*va, ip6_neighbor_t *);
341  vnet_main_t *vnm = vnet_get_main ();
342  vnet_sw_interface_t *si;
343  u8 *flags = 0;
344 
345  if (!n)
346  return format (s, "%=12s%=45s%=6s%=20s%=40s", "Time", "Address", "Flags",
347  "Link layer", "Interface");
348 
349  if (n->flags & IP6_NEIGHBOR_FLAG_DYNAMIC)
350  flags = format (flags, "D");
351 
352  if (n->flags & IP6_NEIGHBOR_FLAG_STATIC)
353  flags = format (flags, "S");
354 
355  if (n->flags & IP6_NEIGHBOR_FLAG_NO_FIB_ENTRY)
356  flags = format (flags, "N");
357 
358  si = vnet_get_sw_interface (vnm, n->key.sw_if_index);
359  s = format (s, "%=12U%=45U%=6s%=20U%=40U",
360  format_vlib_time, vm, n->time_last_updated,
361  format_ip6_address, &n->key.ip6_address,
362  flags ? (char *) flags : "",
363  format_ethernet_address, n->link_layer_address,
364  format_vnet_sw_interface_name, vnm, si);
365 
366  vec_free (flags);
367  return s;
368 }
369 
370 static void
371 ip6_neighbor_adj_fib_remove (ip6_neighbor_t * n, u32 fib_index)
372 {
373  if (FIB_NODE_INDEX_INVALID != n->fib_entry_index)
374  {
375  if (ip6_address_is_link_local_unicast (&n->key.ip6_address))
376  {
377  ip6_ll_prefix_t pfx = {
378  .ilp_addr = n->key.ip6_address,
379  .ilp_sw_if_index = n->key.sw_if_index,
380  };
381  ip6_ll_table_entry_delete (&pfx);
382  }
383  else
384  {
385  fib_prefix_t pfx = {
386  .fp_len = 128,
387  .fp_proto = FIB_PROTOCOL_IP6,
388  .fp_addr.ip6 = n->key.ip6_address,
389  };
390  fib_table_entry_path_remove (fib_index,
391  &pfx,
392  FIB_SOURCE_ADJ,
393  DPO_PROTO_IP6,
394  &pfx.fp_addr,
395  n->key.sw_if_index, ~0,
396  1, FIB_ROUTE_PATH_FLAG_NONE);
397  }
398  }
399 }
400 
401 typedef struct
402 {
403  u8 is_add;
404  u8 is_static;
405  u8 is_no_fib_entry;
406  u8 link_layer_address[6];
407  u32 sw_if_index;
408  ip6_address_t addr;
409 } ip6_neighbor_set_unset_rpc_args_t;
410 
411 static void ip6_neighbor_set_unset_rpc_callback
412  (ip6_neighbor_set_unset_rpc_args_t * a);
413 
414 static void set_unset_ip6_neighbor_rpc
415  (vlib_main_t * vm,
416  u32 sw_if_index,
417  const ip6_address_t * a,
418  const u8 * link_layer_address,
419  int is_add, int is_static, int is_no_fib_entry)
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.is_static = is_static;
427  args.is_no_fib_entry = is_no_fib_entry;
428  clib_memcpy (&args.addr, a, sizeof (*a));
429  if (NULL != link_layer_address)
430  clib_memcpy (args.link_layer_address, link_layer_address, 6);
431 
432  vl_api_rpc_call_main_thread (ip6_neighbor_set_unset_rpc_callback,
433  (u8 *) & args, sizeof (args));
434 }
435 
436 static void
437 ip6_nbr_probe (ip_adjacency_t * adj)
438 {
439  icmp6_neighbor_solicitation_header_t *h;
440  vnet_main_t *vnm = vnet_get_main ();
441  ip6_main_t *im = &ip6_main;
442  ip_interface_address_t *ia;
443  ip6_address_t *dst, *src;
444  vnet_hw_interface_t *hi;
445  vnet_sw_interface_t *si;
446  vlib_buffer_t *b;
447  int bogus_length;
448  vlib_main_t *vm;
449  u32 bi = 0;
450 
451  vm = vlib_get_main ();
452 
453  si = vnet_get_sw_interface (vnm, adj->rewrite_header.sw_if_index);
454  dst = &adj->sub_type.nbr.next_hop.ip6;
455 
456  if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
457  {
458  return;
459  }
460  src = ip6_interface_address_matching_destination (im, dst,
461  adj->rewrite_header.
462  sw_if_index, &ia);
463  if (!src)
464  {
465  return;
466  }
467 
468  h = vlib_packet_template_get_packet (vm,
469  &im->discover_neighbor_packet_template,
470  &bi);
471  if (!h)
472  return;
473 
474  hi = vnet_get_sup_hw_interface (vnm, adj->rewrite_header.sw_if_index);
475 
476  h->ip.dst_address.as_u8[13] = dst->as_u8[13];
477  h->ip.dst_address.as_u8[14] = dst->as_u8[14];
478  h->ip.dst_address.as_u8[15] = dst->as_u8[15];
479  h->ip.src_address = src[0];
480  h->neighbor.target_address = dst[0];
481 
482  clib_memcpy (h->link_layer_option.ethernet_address,
483  hi->hw_address, vec_len (hi->hw_address));
484 
485  h->neighbor.icmp.checksum =
486  ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h->ip, &bogus_length);
487  ASSERT (bogus_length == 0);
488 
489  b = vlib_get_buffer (vm, bi);
490  vnet_buffer (b)->sw_if_index[VLIB_RX] =
491  vnet_buffer (b)->sw_if_index[VLIB_TX] = adj->rewrite_header.sw_if_index;
492 
493  /* Add encapsulation string for software interface (e.g. ethernet header). */
494  vnet_rewrite_one_header (adj[0], h, sizeof (ethernet_header_t));
495  vlib_buffer_advance (b, -adj->rewrite_header.data_bytes);
496 
497  {
498  vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index);
499  u32 *to_next = vlib_frame_vector_args (f);
500  to_next[0] = bi;
501  f->n_vectors = 1;
502  vlib_put_frame_to_node (vm, hi->output_node_index, f);
503  }
504 }
505 
506 static void
507 ip6_nd_mk_complete (adj_index_t ai, ip6_neighbor_t * nbr)
508 {
509  adj_nbr_update_rewrite (ai, ADJ_NBR_REWRITE_FLAG_COMPLETE,
510  ethernet_build_rewrite (vnet_get_main (),
511  nbr->key.sw_if_index,
512  adj_get_link_type (ai),
513  nbr->link_layer_address));
514 }
515 
516 static void
517 ip6_nd_mk_incomplete (adj_index_t ai)
518 {
519  ip_adjacency_t *adj = adj_get (ai);
520 
521  adj_nbr_update_rewrite (ai,
522  ADJ_NBR_REWRITE_FLAG_INCOMPLETE,
523  ethernet_build_rewrite (vnet_get_main (),
524  adj->rewrite_header.
525  sw_if_index,
526  adj_get_link_type (ai),
527  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
528 }
529 
530 #define IP6_NBR_MK_KEY(k, sw_if_index, addr) \
531 { \
532  k.sw_if_index = sw_if_index; \
533  k.ip6_address = *addr; \
534  k.pad = 0; \
535 }
536 
537 static ip6_neighbor_t *
538 ip6_nd_find (u32 sw_if_index, const ip6_address_t * addr)
539 {
540  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
541  ip6_neighbor_t *n = NULL;
542  ip6_neighbor_key_t k;
543  uword *p;
544 
545  IP6_NBR_MK_KEY (k, sw_if_index, addr);
546 
547  p = mhash_get (&nm->neighbor_index_by_key, &k);
548  if (p)
549  {
550  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
551  }
552 
553  return (n);
554 }
555 
556 static adj_walk_rc_t
557 ip6_nd_mk_complete_walk (adj_index_t ai, void *ctx)
558 {
559  ip6_neighbor_t *nbr = ctx;
560 
561  ip6_nd_mk_complete (ai, nbr);
562 
563  return (ADJ_WALK_RC_CONTINUE);
564 }
565 
566 static adj_walk_rc_t
567 ip6_nd_mk_incomplete_walk (adj_index_t ai, void *ctx)
568 {
569  ip6_nd_mk_incomplete (ai);
570 
571  return (ADJ_WALK_RC_CONTINUE);
572 }
573 
574 static clib_error_t *
575 ip6_neighbor_sw_interface_up_down (vnet_main_t * vnm,
576  u32 sw_if_index, u32 flags)
577 {
578  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
579  ip6_neighbor_t *n;
580  u32 i, *to_delete = 0;
581 
582  /* *INDENT-OFF* */
583  pool_foreach (n, nm->neighbor_pool,
584  ({
585  if (n->key.sw_if_index == sw_if_index)
586  vec_add1 (to_delete, n - nm->neighbor_pool);
587  }));
588  /* *INDENT-ON* */
589 
590  if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
591  {
592  for (i = 0; i < vec_len (to_delete); i++)
593  {
594  n = pool_elt_at_index (nm->neighbor_pool, to_delete[i]);
595  adj_nbr_walk_nh6 (n->key.sw_if_index, &n->key.ip6_address,
596  ip6_nd_mk_complete_walk, n);
597  }
598  }
599  else
600  {
601  for (i = 0; i < vec_len (to_delete); i++)
602  {
603  n = pool_elt_at_index (nm->neighbor_pool, to_delete[i]);
604  adj_nbr_walk_nh6 (n->key.sw_if_index, &n->key.ip6_address,
605  ip6_nd_mk_incomplete_walk, NULL);
606  if (n->flags & IP6_NEIGHBOR_FLAG_STATIC)
607  continue;
608  ip6_neighbor_adj_fib_remove (n,
609  ip6_fib_table_get_index_for_sw_if_index
610  (n->key.sw_if_index));
611  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
612  pool_put (nm->neighbor_pool, n);
613  }
614  }
615 
616  vec_free (to_delete);
617  return 0;
618 }
619 
620 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (ip6_neighbor_sw_interface_up_down);
621 
622 void
623 ip6_ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
624 {
625  ip6_neighbor_t *nbr;
626  ip_adjacency_t *adj;
627 
628  adj = adj_get (ai);
629 
630  nbr = ip6_nd_find (sw_if_index, &adj->sub_type.nbr.next_hop.ip6);
631 
632  switch (adj->lookup_next_index)
633  {
634  case IP_LOOKUP_NEXT_GLEAN:
635  adj_glean_update_rewrite (ai);
636  break;
637  case IP_LOOKUP_NEXT_ARP:
638  if (NULL != nbr)
639  {
640  adj_nbr_walk_nh6 (sw_if_index, &nbr->key.ip6_address,
641  ip6_nd_mk_complete_walk, nbr);
642  }
643  else
644  {
645  /*
646  * no matching ND entry.
647  * construct the rewrite required to for an ND packet, and stick
648  * that in the adj's pipe to smoke.
649  */
650  adj_nbr_update_rewrite (ai,
651  ADJ_NBR_REWRITE_FLAG_INCOMPLETE,
652  ethernet_build_rewrite (vnm,
653  sw_if_index,
654  VNET_LINK_IP6,
655  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
656 
657  /*
658  * since the FIB has added this adj for a route, it makes sense it may
659  * want to forward traffic sometime soon. Let's send a speculative ND.
660  * just one. If we were to do periodically that wouldn't be bad either,
661  * but that's more code than i'm prepared to write at this time for
662  * relatively little reward.
663  */
664  ip6_nbr_probe (adj);
665  }
666  break;
667  case IP_LOOKUP_NEXT_BCAST:
668  adj_nbr_update_rewrite (ai,
669  ADJ_NBR_REWRITE_FLAG_COMPLETE,
670  ethernet_build_rewrite (vnm,
671  sw_if_index,
672  VNET_LINK_IP6,
673  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
674  break;
675  case IP_LOOKUP_NEXT_MCAST:
676  {
677  /*
678  * Construct a partial rewrite from the known ethernet mcast dest MAC
679  */
680  u8 *rewrite;
681  u8 offset;
682 
683  rewrite = ethernet_build_rewrite (vnm,
684  sw_if_index,
685  adj->ia_link,
686  ethernet_ip6_mcast_dst_addr ());
687 
688  /*
689  * Complete the remaining fields of the adj's rewrite to direct the
690  * complete of the rewrite at switch time by copying in the IP
691  * dst address's bytes.
692  * Ofset is 2 bytes into the desintation address.
693  */
694  offset = vec_len (rewrite) - 2;
695  adj_mcast_update_rewrite (ai, rewrite, offset);
696 
697  break;
698  }
699  case IP_LOOKUP_NEXT_DROP:
700  case IP_LOOKUP_NEXT_PUNT:
701  case IP_LOOKUP_NEXT_LOCAL:
702  case IP_LOOKUP_NEXT_REWRITE:
703  case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
704  case IP_LOOKUP_NEXT_MIDCHAIN:
705  case IP_LOOKUP_NEXT_ICMP_ERROR:
706  case IP_LOOKUP_N_NEXT:
707  ASSERT (0);
708  break;
709  }
710 }
711 
712 
713 static void
714 ip6_neighbor_adj_fib_add (ip6_neighbor_t * n, u32 fib_index)
715 {
716  if (ip6_address_is_link_local_unicast (&n->key.ip6_address))
717  {
718  ip6_ll_prefix_t pfx = {
719  .ilp_addr = n->key.ip6_address,
720  .ilp_sw_if_index = n->key.sw_if_index,
721  };
722  n->fib_entry_index =
723  ip6_ll_table_entry_update (&pfx, FIB_ROUTE_PATH_FLAG_NONE);
724  }
725  else
726  {
727  fib_prefix_t pfx = {
728  .fp_len = 128,
729  .fp_proto = FIB_PROTOCOL_IP6,
730  .fp_addr.ip6 = n->key.ip6_address,
731  };
732 
733  n->fib_entry_index =
734  fib_table_entry_path_add (fib_index, &pfx, FIB_SOURCE_ADJ,
735  FIB_ENTRY_FLAG_ATTACHED,
736  DPO_PROTO_IP6, &pfx.fp_addr,
737  n->key.sw_if_index, ~0, 1, NULL,
738  FIB_ROUTE_PATH_FLAG_NONE);
739  }
740 }
741 
742 static ip6_neighbor_t *
743 force_reuse_neighbor_entry (void)
744 {
745  ip6_neighbor_t *n;
746  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
747  u32 count = 0;
748  u32 index = pool_next_index (nm->neighbor_pool, nm->neighbor_delete_rotor);
749  if (index == ~0) /* Try again from elt 0 */
750  index = pool_next_index (nm->neighbor_pool, index);
751 
752  /* Find a non-static random entry to free up for reuse */
753  do
754  {
755  if ((count++ == 100) || (index == ~0))
756  return NULL; /* give up after 100 entries */
757  n = pool_elt_at_index (nm->neighbor_pool, index);
758  nm->neighbor_delete_rotor = index;
759  index = pool_next_index (nm->neighbor_pool, index);
760  }
761  while (n->flags & IP6_NEIGHBOR_FLAG_STATIC);
762 
763  /* Remove ARP entry from its interface and update fib */
764  adj_nbr_walk_nh6 (n->key.sw_if_index,
765  &n->key.ip6_address, ip6_nd_mk_incomplete_walk, NULL);
766  ip6_neighbor_adj_fib_remove
767  (n, ip6_fib_table_get_index_for_sw_if_index (n->key.sw_if_index));
768  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
769 
770  return n;
771 }
772 
773 int
774 vnet_set_ip6_ethernet_neighbor (vlib_main_t * vm,
775  u32 sw_if_index,
776  const ip6_address_t * a,
777  const u8 * link_layer_address,
778  uword n_bytes_link_layer_address,
779  int is_static, int is_no_fib_entry)
780 {
781  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
782  ip6_neighbor_key_t k;
783  ip6_neighbor_t *n = 0;
784  int make_new_nd_cache_entry = 1;
785  uword *p;
786  u32 next_index;
787  pending_resolution_t *pr, *mc;
788 
789  if (vlib_get_thread_index ())
790  {
791  set_unset_ip6_neighbor_rpc (vm, sw_if_index, a, link_layer_address,
792  1 /* set new neighbor */ , is_static,
793  is_no_fib_entry);
794  return 0;
795  }
796 
797  k.sw_if_index = sw_if_index;
798  k.ip6_address = a[0];
799  k.pad = 0;
800 
801  p = mhash_get (&nm->neighbor_index_by_key, &k);
802  if (p)
803  {
804  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
805  /* Refuse to over-write static neighbor entry. */
806  if (!is_static && (n->flags & IP6_NEIGHBOR_FLAG_STATIC))
807  {
808  /* if MAC address match, still check to send event */
809  if (0 == memcmp (n->link_layer_address,
810  link_layer_address, n_bytes_link_layer_address))
811  goto check_customers;
812  return -2;
813  }
814  make_new_nd_cache_entry = 0;
815  }
816 
817  if (make_new_nd_cache_entry)
818  {
819  if (nm->limit_neighbor_cache_size &&
820  pool_elts (nm->neighbor_pool) >= nm->limit_neighbor_cache_size)
821  {
822  n = force_reuse_neighbor_entry ();
823  if (NULL == n)
824  return -2;
825  }
826  else
827  pool_get (nm->neighbor_pool, n);
828 
829  mhash_set (&nm->neighbor_index_by_key, &k, n - nm->neighbor_pool,
830  /* old value */ 0);
831  n->key = k;
832  n->fib_entry_index = FIB_NODE_INDEX_INVALID;
833 
834  clib_memcpy (n->link_layer_address,
835  link_layer_address, n_bytes_link_layer_address);
836 
837  /*
838  * create the adj-fib. the entry in the FIB table for and to the peer.
839  */
840  if (!is_no_fib_entry)
841  {
842  ip6_neighbor_adj_fib_add
843  (n, ip6_fib_table_get_index_for_sw_if_index (n->key.sw_if_index));
844  }
845  else
846  {
847  n->flags |= IP6_NEIGHBOR_FLAG_NO_FIB_ENTRY;
848  }
849  }
850  else
851  {
852  /*
853  * prevent a DoS attack from the data-plane that
854  * spams us with no-op updates to the MAC address
855  */
856  if (0 == memcmp (n->link_layer_address,
857  link_layer_address, n_bytes_link_layer_address))
858  {
859  n->time_last_updated = vlib_time_now (vm);
860  goto check_customers;
861  }
862 
863  clib_memcpy (n->link_layer_address,
864  link_layer_address, n_bytes_link_layer_address);
865  }
866 
867  /* Update time stamp and flags. */
868  n->time_last_updated = vlib_time_now (vm);
869  if (is_static)
870  {
871  n->flags |= IP6_NEIGHBOR_FLAG_STATIC;
872  n->flags &= ~IP6_NEIGHBOR_FLAG_DYNAMIC;
873  }
874  else
875  {
876  n->flags |= IP6_NEIGHBOR_FLAG_DYNAMIC;
877  n->flags &= ~IP6_NEIGHBOR_FLAG_STATIC;
878  }
879 
880  adj_nbr_walk_nh6 (sw_if_index,
881  &n->key.ip6_address, ip6_nd_mk_complete_walk, n);
882 
883 check_customers:
884  /* Customer(s) waiting for this address to be resolved? */
885  p = mhash_get (&nm->pending_resolutions_by_address, a);
886  if (p)
887  {
888  next_index = p[0];
889 
890  while (next_index != (u32) ~ 0)
891  {
892  pr = pool_elt_at_index (nm->pending_resolutions, next_index);
893  vlib_process_signal_event (vm, pr->node_index,
894  pr->type_opaque, pr->data);
895  next_index = pr->next_index;
896  pool_put (nm->pending_resolutions, pr);
897  }
898 
899  mhash_unset (&nm->pending_resolutions_by_address, (void *) a, 0);
900  }
901 
902  /* Customer(s) requesting ND event for this address? */
903  p = mhash_get (&nm->mac_changes_by_address, a);
904  if (p)
905  {
906  next_index = p[0];
907 
908  while (next_index != (u32) ~ 0)
909  {
910  int (*fp) (u32, u8 *, u32, ip6_address_t *);
911  int rv = 1;
912  mc = pool_elt_at_index (nm->mac_changes, next_index);
913  fp = mc->data_callback;
914 
915  /* Call the user's data callback, return 1 to suppress dup events */
916  if (fp)
917  rv =
918  (*fp) (mc->data, (u8 *) link_layer_address, sw_if_index,
919  &ip6a_zero);
920  /*
921  * Signal the resolver process, as long as the user
922  * says they want to be notified
923  */
924  if (rv == 0)
925  vlib_process_signal_event (vm, mc->node_index,
926  mc->type_opaque, mc->data);
927  next_index = mc->next_index;
928  }
929  }
930 
931  return 0;
932 }
933 
934 int
935 vnet_unset_ip6_ethernet_neighbor (vlib_main_t * vm,
936  u32 sw_if_index, const ip6_address_t * a)
937 {
938  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
939  ip6_neighbor_key_t k;
940  ip6_neighbor_t *n;
941  uword *p;
942  int rv = 0;
943 
944  if (vlib_get_thread_index ())
945  {
946  set_unset_ip6_neighbor_rpc (vm, sw_if_index, a, NULL,
947  0 /* unset */ , 0, 0);
948  return 0;
949  }
950 
951  k.sw_if_index = sw_if_index;
952  k.ip6_address = a[0];
953  k.pad = 0;
954 
955  p = mhash_get (&nm->neighbor_index_by_key, &k);
956  if (p == 0)
957  {
958  rv = -1;
959  goto out;
960  }
961 
962  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
963 
964  adj_nbr_walk_nh6 (sw_if_index,
965  &n->key.ip6_address, ip6_nd_mk_incomplete_walk, NULL);
966  ip6_neighbor_adj_fib_remove
967  (n, ip6_fib_table_get_index_for_sw_if_index (sw_if_index));
968 
969  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
970  pool_put (nm->neighbor_pool, n);
971 
972 out:
973  return rv;
974 }
975 
976 static void ip6_neighbor_set_unset_rpc_callback
977  (ip6_neighbor_set_unset_rpc_args_t * a)
978 {
979  vlib_main_t *vm = vlib_get_main ();
980  if (a->is_add)
981  vnet_set_ip6_ethernet_neighbor (vm, a->sw_if_index, &a->addr,
982  a->link_layer_address, 6, a->is_static,
983  a->is_no_fib_entry);
984  else
985  vnet_unset_ip6_ethernet_neighbor (vm, a->sw_if_index, &a->addr);
986 }
987 
988 static int
989 ip6_neighbor_sort (void *a1, void *a2)
990 {
991  vnet_main_t *vnm = vnet_get_main ();
992  ip6_neighbor_t *n1 = a1, *n2 = a2;
993  int cmp;
994  cmp = vnet_sw_interface_compare (vnm, n1->key.sw_if_index,
995  n2->key.sw_if_index);
996  if (!cmp)
997  cmp = ip6_address_compare (&n1->key.ip6_address, &n2->key.ip6_address);
998  return cmp;
999 }
1000 
1001 ip6_neighbor_t *
1002 ip6_neighbors_pool (void)
1003 {
1004  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1005  return nm->neighbor_pool;
1006 }
1007 
1008 ip6_neighbor_t *
1009 ip6_neighbors_entries (u32 sw_if_index)
1010 {
1011  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1012  ip6_neighbor_t *n, *ns = 0;
1013 
1014  /* *INDENT-OFF* */
1015  pool_foreach (n, nm->neighbor_pool,
1016  ({
1017  if (sw_if_index != ~0 && n->key.sw_if_index != sw_if_index)
1018  continue;
1019  vec_add1 (ns, n[0]);
1020  }));
1021  /* *INDENT-ON* */
1022 
1023  if (ns)
1024  vec_sort_with_function (ns, ip6_neighbor_sort);
1025  return ns;
1026 }
1027 
1028 static clib_error_t *
1029 show_ip6_neighbors (vlib_main_t * vm,
1030  unformat_input_t * input, vlib_cli_command_t * cmd)
1031 {
1032  vnet_main_t *vnm = vnet_get_main ();
1033  ip6_neighbor_t *n, *ns;
1034  clib_error_t *error = 0;
1035  u32 sw_if_index;
1036 
1037  /* Filter entries by interface if given. */
1038  sw_if_index = ~0;
1039  (void) unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index);
1040 
1041  ns = ip6_neighbors_entries (sw_if_index);
1042  if (ns)
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  vec_free (ns);
1050  }
1051 
1052  return error;
1053 }
1054 
1055 /*?
1056  * This command is used to display the adjacent IPv6 hosts found via
1057  * neighbor discovery. Optionally, limit the output to the specified
1058  * interface.
1059  *
1060  * @cliexpar
1061  * Example of how to display the IPv6 neighbor adjacency table:
1062  * @cliexstart{show ip6 neighbors}
1063  * Time Address Flags Link layer Interface
1064  * 34.0910 ::a:1:1:0:7 02:fe:6a:07:39:6f GigabitEthernet2/0/0
1065  * 173.2916 ::b:5:1:c:2 02:fe:50:62:3a:94 GigabitEthernet2/0/0
1066  * 886.6654 ::1:1:c:0:9 S 02:fe:e4:45:27:5b GigabitEthernet3/0/0
1067  * @cliexend
1068  * Example of how to display the IPv6 neighbor adjacency table for given interface:
1069  * @cliexstart{show ip6 neighbors GigabitEthernet2/0/0}
1070  * Time Address Flags Link layer Interface
1071  * 34.0910 ::a:1:1:0:7 02:fe:6a:07:39:6f GigabitEthernet2/0/0
1072  * 173.2916 ::b:5:1:c:2 02:fe:50:62:3a:94 GigabitEthernet2/0/0
1073  * @cliexend
1074 ?*/
1075 /* *INDENT-OFF* */
1076 VLIB_CLI_COMMAND (show_ip6_neighbors_command, static) = {
1077  .path = "show ip6 neighbors",
1078  .function = show_ip6_neighbors,
1079  .short_help = "show ip6 neighbors [<interface>]",
1080 };
1081 /* *INDENT-ON* */
1082 
1083 static clib_error_t *
1084 set_ip6_neighbor (vlib_main_t * vm,
1085  unformat_input_t * input, vlib_cli_command_t * cmd)
1086 {
1087  vnet_main_t *vnm = vnet_get_main ();
1088  ip6_address_t addr;
1089  u8 mac_address[6];
1090  int addr_valid = 0;
1091  int is_del = 0;
1092  int is_static = 0;
1093  int is_no_fib_entry = 0;
1094  u32 sw_if_index;
1095 
1096  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1097  {
1098  /* intfc, ip6-address, mac-address */
1099  if (unformat (input, "%U %U %U",
1100  unformat_vnet_sw_interface, vnm, &sw_if_index,
1101  unformat_ip6_address, &addr,
1102  unformat_ethernet_address, mac_address))
1103  addr_valid = 1;
1104 
1105  else if (unformat (input, "delete") || unformat (input, "del"))
1106  is_del = 1;
1107  else if (unformat (input, "static"))
1108  is_static = 1;
1109  else if (unformat (input, "no-fib-entry"))
1110  is_no_fib_entry = 1;
1111  else
1112  break;
1113  }
1114 
1115  if (!addr_valid)
1116  return clib_error_return (0, "Missing interface, ip6 or hw address");
1117 
1118  if (!is_del)
1119  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index, &addr,
1120  mac_address, sizeof (mac_address),
1121  is_static, is_no_fib_entry);
1122  else
1123  vnet_unset_ip6_ethernet_neighbor (vm, sw_if_index, &addr);
1124  return 0;
1125 }
1126 
1127 /*?
1128  * This command is used to manually add an entry to the IPv6 neighbor
1129  * adjacency table. Optionally, the entry can be added as static. It is
1130  * also used to remove an entry from the table. Use the '<em>show ip6
1131  * neighbors</em>' command to display all learned and manually entered entries.
1132  *
1133  * @cliexpar
1134  * Example of how to add a static entry to the IPv6 neighbor adjacency table:
1135  * @cliexcmd{set ip6 neighbor GigabitEthernet2/0/0 ::1:1:c:0:9 02:fe:e4:45:27:5b static}
1136  * Example of how to delete an entry from the IPv6 neighbor adjacency table:
1137  * @cliexcmd{set ip6 neighbor del GigabitEthernet2/0/0 ::1:1:c:0:9 02:fe:e4:45:27:5b}
1138 ?*/
1139 /* *INDENT-OFF* */
1140 VLIB_CLI_COMMAND (set_ip6_neighbor_command, static) =
1141 {
1142  .path = "set ip6 neighbor",
1143  .function = set_ip6_neighbor,
1144  .short_help = "set ip6 neighbor [del] <interface> <ip6-address> <mac-address> [static]",
1145 };
1146 /* *INDENT-ON* */
1147 
1148 typedef enum
1149 {
1150  ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP,
1151  ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY,
1152  ICMP6_NEIGHBOR_SOLICITATION_N_NEXT,
1153 } icmp6_neighbor_solicitation_or_advertisement_next_t;
1154 
1155 static_always_inline uword
1156 icmp6_neighbor_solicitation_or_advertisement (vlib_main_t * vm,
1157  vlib_node_runtime_t * node,
1158  vlib_frame_t * frame,
1159  uword is_solicitation)
1160 {
1161  vnet_main_t *vnm = vnet_get_main ();
1162  ip6_main_t *im = &ip6_main;
1163  uword n_packets = frame->n_vectors;
1164  u32 *from, *to_next;
1165  u32 n_left_from, n_left_to_next, next_index, n_advertisements_sent;
1166  icmp6_neighbor_discovery_option_type_t option_type;
1167  vlib_node_runtime_t *error_node =
1168  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1169  int bogus_length;
1170 
1171  from = vlib_frame_vector_args (frame);
1172  n_left_from = n_packets;
1173  next_index = node->cached_next_index;
1174 
1175  if (node->flags & VLIB_NODE_FLAG_TRACE)
1176  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1177  /* stride */ 1,
1178  sizeof (icmp6_input_trace_t));
1179 
1180  option_type =
1181  (is_solicitation
1182  ? ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address
1183  : ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address);
1184  n_advertisements_sent = 0;
1185 
1186  while (n_left_from > 0)
1187  {
1188  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1189 
1190  while (n_left_from > 0 && n_left_to_next > 0)
1191  {
1192  vlib_buffer_t *p0;
1193  ip6_header_t *ip0;
1194  icmp6_neighbor_solicitation_or_advertisement_header_t *h0;
1195  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *o0;
1196  u32 bi0, options_len0, sw_if_index0, next0, error0;
1197  u32 ip6_sadd_link_local, ip6_sadd_unspecified;
1198  int is_rewrite0;
1199  u32 ni0;
1200 
1201  bi0 = to_next[0] = from[0];
1202 
1203  from += 1;
1204  to_next += 1;
1205  n_left_from -= 1;
1206  n_left_to_next -= 1;
1207 
1208  p0 = vlib_get_buffer (vm, bi0);
1209  ip0 = vlib_buffer_get_current (p0);
1210  h0 = ip6_next_header (ip0);
1211  options_len0 =
1212  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1213 
1214  error0 = ICMP6_ERROR_NONE;
1215  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1216  ip6_sadd_link_local =
1217  ip6_address_is_link_local_unicast (&ip0->src_address);
1218  ip6_sadd_unspecified =
1219  ip6_address_is_unspecified (&ip0->src_address);
1220 
1221  /* Check that source address is unspecified, link-local or else on-link. */
1222  if (!ip6_sadd_unspecified && !ip6_sadd_link_local)
1223  {
1224  u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
1225 
1226  if (ADJ_INDEX_INVALID != src_adj_index0)
1227  {
1228  ip_adjacency_t *adj0 = adj_get (src_adj_index0);
1229 
1230  /* Allow all realistic-looking rewrite adjacencies to pass */
1231  ni0 = adj0->lookup_next_index;
1232  is_rewrite0 = (ni0 >= IP_LOOKUP_NEXT_ARP) &&
1233  (ni0 < IP6_LOOKUP_N_NEXT);
1234 
1235  error0 = ((adj0->rewrite_header.sw_if_index != sw_if_index0
1236  || !is_rewrite0)
1237  ?
1238  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_NOT_ON_LINK
1239  : error0);
1240  }
1241  else
1242  {
1243  error0 =
1244  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_NOT_ON_LINK;
1245  }
1246  }
1247 
1248  o0 = (void *) (h0 + 1);
1249  o0 = ((options_len0 == 8 && o0->header.type == option_type
1250  && o0->header.n_data_u64s == 1) ? o0 : 0);
1251 
1252  /* If src address unspecified or link local, donot learn neighbor MAC */
1253  if (PREDICT_TRUE (error0 == ICMP6_ERROR_NONE && o0 != 0 &&
1254  !ip6_sadd_unspecified))
1255  {
1256  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index0,
1257  is_solicitation ?
1258  &ip0->src_address :
1259  &h0->target_address,
1260  o0->ethernet_address,
1261  sizeof (o0->ethernet_address),
1262  0, 0);
1263  }
1264 
1265  if (is_solicitation && error0 == ICMP6_ERROR_NONE)
1266  {
1267  /* Check that target address is local to this router. */
1268  fib_node_index_t fei;
1269  u32 fib_index;
1270 
1271  fib_index =
1272  ip6_fib_table_get_index_for_sw_if_index (sw_if_index0);
1273 
1274  if (~0 == fib_index)
1275  {
1276  error0 = ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1277  }
1278  else
1279  {
1280  if (ip6_address_is_link_local_unicast (&h0->target_address))
1281  {
1282  fei = ip6_fib_table_lookup_exact_match
1283  (ip6_ll_fib_get (sw_if_index0),
1284  &h0->target_address, 128);
1285  }
1286  else
1287  {
1288  fei = ip6_fib_table_lookup_exact_match (fib_index,
1289  &h0->target_address,
1290  128);
1291  }
1292 
1293  if (FIB_NODE_INDEX_INVALID == fei)
1294  {
1295  /* The target address is not in the FIB */
1296  error0 =
1297  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1298  }
1299  else
1300  {
1301  if (FIB_ENTRY_FLAG_LOCAL &
1302  fib_entry_get_flags_for_source (fei,
1303  FIB_SOURCE_INTERFACE))
1304  {
1305  /* It's an address that belongs to one of our interfaces
1306  * that's good. */
1307  }
1308  else
1309  if (fib_entry_is_sourced
1310  (fei, FIB_SOURCE_IP6_ND_PROXY) ||
1311  fib_entry_is_sourced (fei, FIB_SOURCE_IP6_ND))
1312  {
1313  /* The address was added by IPv6 Proxy ND config.
1314  * We should only respond to these if the NS arrived on
1315  * the link that has a matching covering prefix */
1316  }
1317  else
1318  {
1319  error0 =
1320  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1321  }
1322  }
1323  }
1324  }
1325 
1326  if (is_solicitation)
1327  next0 = (error0 != ICMP6_ERROR_NONE
1328  ? ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP
1329  : ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY);
1330  else
1331  {
1332  next0 = 0;
1333  error0 = error0 == ICMP6_ERROR_NONE ?
1334  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_RX : error0;
1335  }
1336 
1337  if (is_solicitation && error0 == ICMP6_ERROR_NONE)
1338  {
1339  vnet_sw_interface_t *sw_if0;
1340  ethernet_interface_t *eth_if0;
1341  ethernet_header_t *eth0;
1342 
1343  /* dst address is either source address or the all-nodes mcast addr */
1344  if (!ip6_sadd_unspecified)
1345  ip0->dst_address = ip0->src_address;
1346  else
1347  ip6_set_reserved_multicast_address (&ip0->dst_address,
1348  IP6_MULTICAST_SCOPE_link_local,
1349  IP6_MULTICAST_GROUP_ID_all_hosts);
1350 
1351  ip0->src_address = h0->target_address;
1352  ip0->hop_limit = 255;
1353  h0->icmp.type = ICMP6_neighbor_advertisement;
1354 
1355  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1356  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1357  eth_if0 =
1358  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1359  if (eth_if0 && o0)
1360  {
1361  clib_memcpy (o0->ethernet_address, eth_if0->address, 6);
1362  o0->header.type =
1363  ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
1364  }
1365 
1366  h0->advertisement_flags = clib_host_to_net_u32
1367  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
1368  | ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
1369 
1370  h0->icmp.checksum = 0;
1371  h0->icmp.checksum =
1372  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0,
1373  &bogus_length);
1374  ASSERT (bogus_length == 0);
1375 
1376  /* Reuse current MAC header, copy SMAC to DMAC and
1377  * interface MAC to SMAC */
1378  vlib_buffer_advance (p0, -ethernet_buffer_header_size (p0));
1379  eth0 = vlib_buffer_get_current (p0);
1380  clib_memcpy (eth0->dst_address, eth0->src_address, 6);
1381  if (eth_if0)
1382  clib_memcpy (eth0->src_address, eth_if0->address, 6);
1383 
1384  /* Setup input and output sw_if_index for packet */
1385  ASSERT (vnet_buffer (p0)->sw_if_index[VLIB_RX] == sw_if_index0);
1386  vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0;
1387  vnet_buffer (p0)->sw_if_index[VLIB_RX] =
1388  vnet_main.local_interface_sw_if_index;
1389 
1390  n_advertisements_sent++;
1391  }
1392 
1393  p0->error = error_node->errors[error0];
1394 
1395  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1396  to_next, n_left_to_next,
1397  bi0, next0);
1398  }
1399 
1400  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1401  }
1402 
1403  /* Account for advertisements sent. */
1404  vlib_error_count (vm, error_node->node_index,
1405  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_TX,
1406  n_advertisements_sent);
1407 
1408  return frame->n_vectors;
1409 }
1410 
1411 /* for "syslogging" - use elog for now */
1412 #define foreach_log_level \
1413  _ (DEBUG, "DEBUG") \
1414  _ (INFO, "INFORMATION") \
1415  _ (NOTICE, "NOTICE") \
1416  _ (WARNING, "WARNING") \
1417  _ (ERR, "ERROR") \
1418  _ (CRIT, "CRITICAL") \
1419  _ (ALERT, "ALERT") \
1420  _ (EMERG, "EMERGENCY")
1421 
1422 typedef enum
1423 {
1424 #define _(f,s) LOG_##f,
1425  foreach_log_level
1426 #undef _
1427 } log_level_t;
1428 
1429 static char *log_level_strings[] = {
1430 #define _(f,s) s,
1431  foreach_log_level
1432 #undef _
1433 };
1434 
1435 static int logmask = 1 << LOG_DEBUG;
1436 
1437 static void
1438 ip6_neighbor_syslog (vlib_main_t * vm, int priority, char *fmt, ...)
1439 {
1440  /* just use elog for now */
1441  u8 *what;
1442  va_list va;
1443 
1444  if ((priority > LOG_EMERG) || !(logmask & (1 << priority)))
1445  return;
1446 
1447  va_start (va, fmt);
1448  if (fmt)
1449  {
1450  what = va_format (0, fmt, &va);
1451 
1452  ELOG_TYPE_DECLARE (e) =
1453  {
1454  .format = "ip6 nd: (%s): %s",.format_args = "T4T4",};
1455  struct
1456  {
1457  u32 s[2];
1458  } *ed;
1459  ed = ELOG_DATA (&vm->elog_main, e);
1460  ed->s[0] = elog_string (&vm->elog_main, log_level_strings[priority]);
1461  ed->s[1] = elog_string (&vm->elog_main, (char *) what);
1462  }
1463  va_end (va);
1464  return;
1465 }
1466 
1467 clib_error_t *
1468 call_ip6_neighbor_callbacks (void *data,
1469  _vnet_ip6_neighbor_function_list_elt_t * elt)
1470 {
1471  clib_error_t *error = 0;
1472 
1473  while (elt)
1474  {
1475  error = elt->fp (data);
1476  if (error)
1477  return error;
1478  elt = elt->next_ip6_neighbor_function;
1479  }
1480 
1481  return error;
1482 }
1483 
1484 /* ipv6 neighbor discovery - router advertisements */
1485 typedef enum
1486 {
1487  ICMP6_ROUTER_SOLICITATION_NEXT_DROP,
1488  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW,
1489  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX,
1490  ICMP6_ROUTER_SOLICITATION_N_NEXT,
1491 } icmp6_router_solicitation_or_advertisement_next_t;
1492 
1493 static_always_inline uword
1494 icmp6_router_solicitation (vlib_main_t * vm,
1495  vlib_node_runtime_t * node, vlib_frame_t * frame)
1496 {
1497  vnet_main_t *vnm = vnet_get_main ();
1498  ip6_main_t *im = &ip6_main;
1499  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1500  uword n_packets = frame->n_vectors;
1501  u32 *from, *to_next;
1502  u32 n_left_from, n_left_to_next, next_index;
1503  u32 n_advertisements_sent = 0;
1504  int bogus_length;
1505 
1506  icmp6_neighbor_discovery_option_type_t option_type;
1507 
1508  vlib_node_runtime_t *error_node =
1509  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1510 
1511  from = vlib_frame_vector_args (frame);
1512  n_left_from = n_packets;
1513  next_index = node->cached_next_index;
1514 
1515  if (node->flags & VLIB_NODE_FLAG_TRACE)
1516  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1517  /* stride */ 1,
1518  sizeof (icmp6_input_trace_t));
1519 
1520  /* source may append his LL address */
1521  option_type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
1522 
1523  while (n_left_from > 0)
1524  {
1525  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1526 
1527  while (n_left_from > 0 && n_left_to_next > 0)
1528  {
1529  vlib_buffer_t *p0;
1530  ip6_header_t *ip0;
1531  ip6_radv_t *radv_info = 0;
1532 
1533  icmp6_neighbor_discovery_header_t *h0;
1534  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *o0;
1535 
1536  u32 bi0, options_len0, sw_if_index0, next0, error0;
1537  u32 is_solicitation = 1, is_dropped = 0;
1538  u32 is_unspecified, is_link_local;
1539 
1540  bi0 = to_next[0] = from[0];
1541 
1542  from += 1;
1543  to_next += 1;
1544  n_left_from -= 1;
1545  n_left_to_next -= 1;
1546 
1547  p0 = vlib_get_buffer (vm, bi0);
1548  ip0 = vlib_buffer_get_current (p0);
1549  h0 = ip6_next_header (ip0);
1550  options_len0 =
1551  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1552  is_unspecified = ip6_address_is_unspecified (&ip0->src_address);
1553  is_link_local =
1554  ip6_address_is_link_local_unicast (&ip0->src_address);
1555 
1556  error0 = ICMP6_ERROR_NONE;
1557  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1558 
1559  /* check if solicitation (not from nd_timer node) */
1560  if (ip6_address_is_unspecified (&ip0->dst_address))
1561  is_solicitation = 0;
1562 
1563  /* Check that source address is unspecified, link-local or else on-link. */
1564  if (!is_unspecified && !is_link_local)
1565  {
1566  u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
1567 
1568  if (ADJ_INDEX_INVALID != src_adj_index0)
1569  {
1570  ip_adjacency_t *adj0 = adj_get (src_adj_index0);
1571 
1572  error0 = (adj0->rewrite_header.sw_if_index != sw_if_index0
1573  ?
1574  ICMP6_ERROR_ROUTER_SOLICITATION_SOURCE_NOT_ON_LINK
1575  : error0);
1576  }
1577  else
1578  {
1579  error0 = ICMP6_ERROR_ROUTER_SOLICITATION_SOURCE_NOT_ON_LINK;
1580  }
1581  }
1582 
1583  /* check for source LL option and process */
1584  o0 = (void *) (h0 + 1);
1585  o0 = ((options_len0 == 8
1586  && o0->header.type == option_type
1587  && o0->header.n_data_u64s == 1) ? o0 : 0);
1588 
1589  /* if src address unspecified IGNORE any options */
1590  if (PREDICT_TRUE (error0 == ICMP6_ERROR_NONE && o0 != 0 &&
1591  !is_unspecified && !is_link_local))
1592  {
1593  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index0,
1594  &ip0->src_address,
1595  o0->ethernet_address,
1596  sizeof (o0->ethernet_address),
1597  0, 0);
1598  }
1599 
1600  /* default is to drop */
1601  next0 = ICMP6_ROUTER_SOLICITATION_NEXT_DROP;
1602 
1603  if (error0 == ICMP6_ERROR_NONE)
1604  {
1605  vnet_sw_interface_t *sw_if0;
1606  ethernet_interface_t *eth_if0;
1607  u32 adj_index0;
1608 
1609  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1610  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1611  eth_if0 =
1612  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1613 
1614  /* only support ethernet interface type for now */
1615  error0 =
1616  (!eth_if0) ? ICMP6_ERROR_ROUTER_SOLICITATION_UNSUPPORTED_INTF
1617  : error0;
1618 
1619  if (error0 == ICMP6_ERROR_NONE)
1620  {
1621  u32 ri;
1622 
1623  /* adjust the sizeof the buffer to just include the ipv6 header */
1624  p0->current_length -=
1625  (options_len0 +
1626  sizeof (icmp6_neighbor_discovery_header_t));
1627 
1628  /* look up the radv_t information for this interface */
1629  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) >
1630  sw_if_index0)
1631  {
1632  ri =
1633  nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
1634 
1635  if (ri != ~0)
1636  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
1637  }
1638 
1639  error0 =
1640  ((!radv_info) ?
1641  ICMP6_ERROR_ROUTER_SOLICITATION_RADV_NOT_CONFIG :
1642  error0);
1643 
1644  if (error0 == ICMP6_ERROR_NONE)
1645  {
1646  f64 now = vlib_time_now (vm);
1647 
1648  /* for solicited adverts - need to rate limit */
1649  if (is_solicitation)
1650  {
1651  if (0 != radv_info->last_radv_time &&
1652  (now - radv_info->last_radv_time) <
1653  MIN_DELAY_BETWEEN_RAS)
1654  is_dropped = 1;
1655  else
1656  radv_info->last_radv_time = now;
1657  }
1658 
1659  /* send now */
1660  icmp6_router_advertisement_header_t rh;
1661 
1662  rh.icmp.type = ICMP6_router_advertisement;
1663  rh.icmp.code = 0;
1664  rh.icmp.checksum = 0;
1665 
1666  rh.current_hop_limit = radv_info->curr_hop_limit;
1667  rh.router_lifetime_in_sec =
1668  clib_host_to_net_u16
1669  (radv_info->adv_router_lifetime_in_sec);
1670  rh.
1671  time_in_msec_between_retransmitted_neighbor_solicitations
1672  =
1673  clib_host_to_net_u32 (radv_info->
1674  adv_time_in_msec_between_retransmitted_neighbor_solicitations);
1675  rh.neighbor_reachable_time_in_msec =
1676  clib_host_to_net_u32 (radv_info->
1677  adv_neighbor_reachable_time_in_msec);
1678 
1679  rh.flags =
1680  (radv_info->adv_managed_flag) ?
1681  ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP :
1682  0;
1683  rh.flags |=
1684  ((radv_info->adv_other_flag) ?
1685  ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP :
1686  0);
1687 
1688 
1689  u16 payload_length =
1690  sizeof (icmp6_router_advertisement_header_t);
1691 
1692  vlib_buffer_add_data (vm,
1693  vlib_buffer_get_free_list_index
1694  (p0), bi0, (void *) &rh,
1695  sizeof
1696  (icmp6_router_advertisement_header_t));
1697 
1698  if (radv_info->adv_link_layer_address)
1699  {
1700  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
1701  h;
1702 
1703  h.header.type =
1704  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
1705  h.header.n_data_u64s = 1;
1706 
1707  /* copy ll address */
1708  clib_memcpy (&h.ethernet_address[0],
1709  eth_if0->address, 6);
1710 
1711  vlib_buffer_add_data (vm,
1712  vlib_buffer_get_free_list_index
1713  (p0), bi0, (void *) &h,
1714  sizeof
1715  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t));
1716 
1717  payload_length +=
1718  sizeof
1719  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t);
1720  }
1721 
1722  /* add MTU option */
1723  if (radv_info->adv_link_mtu)
1724  {
1725  icmp6_neighbor_discovery_mtu_option_t h;
1726 
1727  h.unused = 0;
1728  h.mtu =
1729  clib_host_to_net_u32 (radv_info->adv_link_mtu);
1730  h.header.type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_mtu;
1731  h.header.n_data_u64s = 1;
1732 
1733  payload_length +=
1734  sizeof (icmp6_neighbor_discovery_mtu_option_t);
1735 
1736  vlib_buffer_add_data (vm,
1737  vlib_buffer_get_free_list_index
1738  (p0), bi0, (void *) &h,
1739  sizeof
1740  (icmp6_neighbor_discovery_mtu_option_t));
1741  }
1742 
1743  /* add advertised prefix options */
1744  ip6_radv_prefix_t *pr_info;
1745 
1746  /* *INDENT-OFF* */
1747  pool_foreach (pr_info, radv_info->adv_prefixes_pool,
1748  ({
1749  if(pr_info->enabled &&
1750  (!pr_info->decrement_lifetime_flag
1751  || (pr_info->pref_lifetime_expires >0)))
1752  {
1753  /* advertise this prefix */
1754  icmp6_neighbor_discovery_prefix_information_option_t h;
1755 
1756  h.header.type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_prefix_information;
1757  h.header.n_data_u64s = (sizeof(icmp6_neighbor_discovery_prefix_information_option_t) >> 3);
1758 
1759  h.dst_address_length = pr_info->prefix_len;
1760 
1761  h.flags = (pr_info->adv_on_link_flag) ? ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_FLAG_ON_LINK : 0;
1762  h.flags |= (pr_info->adv_autonomous_flag) ? ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_AUTO : 0;
1763 
1764  if(radv_info->cease_radv && pr_info->deprecated_prefix_flag)
1765  {
1766  h.valid_time = clib_host_to_net_u32(MIN_ADV_VALID_LIFETIME);
1767  h.preferred_time = 0;
1768  }
1769  else
1770  {
1771  if(pr_info->decrement_lifetime_flag)
1772  {
1773  pr_info->adv_valid_lifetime_in_secs = ((pr_info->valid_lifetime_expires > now)) ?
1774  (pr_info->valid_lifetime_expires - now) : 0;
1775 
1776  pr_info->adv_pref_lifetime_in_secs = ((pr_info->pref_lifetime_expires > now)) ?
1777  (pr_info->pref_lifetime_expires - now) : 0;
1778  }
1779 
1780  h.valid_time = clib_host_to_net_u32(pr_info->adv_valid_lifetime_in_secs);
1781  h.preferred_time = clib_host_to_net_u32(pr_info->adv_pref_lifetime_in_secs) ;
1782  }
1783  h.unused = 0;
1784 
1785  clib_memcpy(&h.dst_address, &pr_info->prefix, sizeof(ip6_address_t));
1786 
1787  payload_length += sizeof( icmp6_neighbor_discovery_prefix_information_option_t);
1788 
1789  vlib_buffer_add_data (vm,
1790  vlib_buffer_get_free_list_index (p0),
1791  bi0,
1792  (void *)&h, sizeof(icmp6_neighbor_discovery_prefix_information_option_t));
1793 
1794  }
1795  }));
1796  /* *INDENT-ON* */
1797 
1798  /* add additional options before here */
1799 
1800  /* finish building the router advertisement... */
1801  if (!is_unspecified && radv_info->send_unicast)
1802  {
1803  ip0->dst_address = ip0->src_address;
1804  }
1805  else
1806  {
1807  /* target address is all-nodes mcast addr */
1808  ip6_set_reserved_multicast_address
1809  (&ip0->dst_address,
1810  IP6_MULTICAST_SCOPE_link_local,
1811  IP6_MULTICAST_GROUP_ID_all_hosts);
1812  }
1813 
1814  /* source address MUST be the link-local address */
1815  ip0->src_address = radv_info->link_local_address;
1816 
1817  ip0->hop_limit = 255;
1818  ip0->payload_length =
1819  clib_host_to_net_u16 (payload_length);
1820 
1821  icmp6_router_advertisement_header_t *rh0 =
1822  (icmp6_router_advertisement_header_t *) (ip0 + 1);
1823  rh0->icmp.checksum =
1824  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0,
1825  &bogus_length);
1826  ASSERT (bogus_length == 0);
1827 
1828  /* setup output if and adjacency */
1829  vnet_buffer (p0)->sw_if_index[VLIB_RX] =
1830  vnet_main.local_interface_sw_if_index;
1831 
1832  if (is_solicitation)
1833  {
1834  ethernet_header_t *eth0;
1835  /* Reuse current MAC header, copy SMAC to DMAC and
1836  * interface MAC to SMAC */
1837  vlib_buffer_reset (p0);
1838  eth0 = vlib_buffer_get_current (p0);
1839  clib_memcpy (eth0->dst_address, eth0->src_address,
1840  6);
1841  clib_memcpy (eth0->src_address, eth_if0->address,
1842  6);
1843  next0 =
1844  is_dropped ? next0 :
1845  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX;
1846  vnet_buffer (p0)->sw_if_index[VLIB_TX] =
1847  sw_if_index0;
1848  }
1849  else
1850  {
1851  adj_index0 = radv_info->mcast_adj_index;
1852  if (adj_index0 == 0)
1853  error0 = ICMP6_ERROR_DST_LOOKUP_MISS;
1854  else
1855  {
1856  next0 =
1857  is_dropped ? next0 :
1858  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW;
1859  vnet_buffer (p0)->ip.adj_index[VLIB_TX] =
1860  adj_index0;
1861  }
1862  }
1863  p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
1864 
1865  radv_info->n_solicitations_dropped += is_dropped;
1866  radv_info->n_solicitations_rcvd += is_solicitation;
1867 
1868  if ((error0 == ICMP6_ERROR_NONE) && !is_dropped)
1869  {
1870  radv_info->n_advertisements_sent++;
1871  n_advertisements_sent++;
1872  }
1873  }
1874  }
1875  }
1876 
1877  p0->error = error_node->errors[error0];
1878 
1879  if (error0 != ICMP6_ERROR_NONE)
1880  vlib_error_count (vm, error_node->node_index, error0, 1);
1881 
1882  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1883  to_next, n_left_to_next,
1884  bi0, next0);
1885 
1886  }
1887 
1888  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1889  }
1890 
1891  /* Account for router advertisements sent. */
1892  vlib_error_count (vm, error_node->node_index,
1893  ICMP6_ERROR_ROUTER_ADVERTISEMENTS_TX,
1894  n_advertisements_sent);
1895 
1896  return frame->n_vectors;
1897 }
1898 
1899  /* validate advertised info for consistancy (see RFC-4861 section 6.2.7) - log any inconsistencies, packet will always be dropped */
1900 static_always_inline uword
1901 icmp6_router_advertisement (vlib_main_t * vm,
1902  vlib_node_runtime_t * node, vlib_frame_t * frame)
1903 {
1904  vnet_main_t *vnm = vnet_get_main ();
1905  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1906  uword n_packets = frame->n_vectors;
1907  u32 *from, *to_next;
1908  u32 n_left_from, n_left_to_next, next_index;
1909  u32 n_advertisements_rcvd = 0;
1910 
1911  vlib_node_runtime_t *error_node =
1912  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1913 
1914  from = vlib_frame_vector_args (frame);
1915  n_left_from = n_packets;
1916  next_index = node->cached_next_index;
1917 
1918  if (node->flags & VLIB_NODE_FLAG_TRACE)
1919  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1920  /* stride */ 1,
1921  sizeof (icmp6_input_trace_t));
1922 
1923  while (n_left_from > 0)
1924  {
1925  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1926 
1927  while (n_left_from > 0 && n_left_to_next > 0)
1928  {
1929  vlib_buffer_t *p0;
1930  ip6_header_t *ip0;
1931  ip6_radv_t *radv_info = 0;
1932  icmp6_router_advertisement_header_t *h0;
1933  u32 bi0, options_len0, sw_if_index0, next0, error0;
1934 
1935  bi0 = to_next[0] = from[0];
1936 
1937  from += 1;
1938  to_next += 1;
1939  n_left_from -= 1;
1940  n_left_to_next -= 1;
1941 
1942  p0 = vlib_get_buffer (vm, bi0);
1943  ip0 = vlib_buffer_get_current (p0);
1944  h0 = ip6_next_header (ip0);
1945  options_len0 =
1946  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1947 
1948  error0 = ICMP6_ERROR_NONE;
1949  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1950 
1951  /* Check that source address is link-local */
1952  error0 = (!ip6_address_is_link_local_unicast (&ip0->src_address)) ?
1953  ICMP6_ERROR_ROUTER_ADVERTISEMENT_SOURCE_NOT_LINK_LOCAL : error0;
1954 
1955  /* default is to drop */
1956  next0 = ICMP6_ROUTER_SOLICITATION_NEXT_DROP;
1957 
1958  n_advertisements_rcvd++;
1959 
1960  if (error0 == ICMP6_ERROR_NONE)
1961  {
1962  vnet_sw_interface_t *sw_if0;
1963  ethernet_interface_t *eth_if0;
1964 
1965  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1966  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1967  eth_if0 =
1968  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1969 
1970  /* only support ethernet interface type for now */
1971  error0 =
1972  (!eth_if0) ? ICMP6_ERROR_ROUTER_SOLICITATION_UNSUPPORTED_INTF
1973  : error0;
1974 
1975  if (error0 == ICMP6_ERROR_NONE)
1976  {
1977  u32 ri;
1978 
1979  /* look up the radv_t information for this interface */
1980  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) >
1981  sw_if_index0)
1982  {
1983  ri =
1984  nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
1985 
1986  if (ri != ~0)
1987  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
1988  }
1989 
1990  error0 =
1991  ((!radv_info) ?
1992  ICMP6_ERROR_ROUTER_SOLICITATION_RADV_NOT_CONFIG :
1993  error0);
1994 
1995  if (error0 == ICMP6_ERROR_NONE)
1996  {
1997  radv_info->keep_sending_rs = 0;
1998 
1999  ra_report_t r;
2000 
2001  r.sw_if_index = sw_if_index0;
2002  memcpy (r.router_address, &ip0->src_address, 16);
2003  r.current_hop_limit = h0->current_hop_limit;
2004  r.flags = h0->flags;
2005  r.router_lifetime_in_sec =
2006  clib_net_to_host_u16 (h0->router_lifetime_in_sec);
2007  r.neighbor_reachable_time_in_msec =
2008  clib_net_to_host_u32
2009  (h0->neighbor_reachable_time_in_msec);
2010  r.time_in_msec_between_retransmitted_neighbor_solicitations = clib_net_to_host_u32 (h0->time_in_msec_between_retransmitted_neighbor_solicitations);
2011  r.prefixes = 0;
2012 
2013  /* validate advertised information */
2014  if ((h0->current_hop_limit && radv_info->curr_hop_limit)
2015  && (h0->current_hop_limit !=
2016  radv_info->curr_hop_limit))
2017  {
2018  ip6_neighbor_syslog (vm, LOG_WARNING,
2019  "our AdvCurHopLimit on %U doesn't agree with %U",
2020  format_vnet_sw_if_index_name,
2021  vnm, sw_if_index0,
2022  format_ip6_address,
2023  &ip0->src_address);
2024  }
2025 
2026  if ((h0->flags &
2027  ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP)
2028  != radv_info->adv_managed_flag)
2029  {
2030  ip6_neighbor_syslog (vm, LOG_WARNING,
2031  "our AdvManagedFlag on %U doesn't agree with %U",
2032  format_vnet_sw_if_index_name,
2033  vnm, sw_if_index0,
2034  format_ip6_address,
2035  &ip0->src_address);
2036  }
2037 
2038  if ((h0->flags &
2039  ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP)
2040  != radv_info->adv_other_flag)
2041  {
2042  ip6_neighbor_syslog (vm, LOG_WARNING,
2043  "our AdvOtherConfigFlag on %U doesn't agree with %U",
2044  format_vnet_sw_if_index_name,
2045  vnm, sw_if_index0,
2046  format_ip6_address,
2047  &ip0->src_address);
2048  }
2049 
2050  if ((h0->
2051  time_in_msec_between_retransmitted_neighbor_solicitations
2052  && radv_info->
2053  adv_time_in_msec_between_retransmitted_neighbor_solicitations)
2054  && (h0->
2055  time_in_msec_between_retransmitted_neighbor_solicitations
2056  !=
2057  clib_host_to_net_u32 (radv_info->
2058  adv_time_in_msec_between_retransmitted_neighbor_solicitations)))
2059  {
2060  ip6_neighbor_syslog (vm, LOG_WARNING,
2061  "our AdvRetransTimer 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->neighbor_reachable_time_in_msec &&
2069  radv_info->adv_neighbor_reachable_time_in_msec) &&
2070  (h0->neighbor_reachable_time_in_msec !=
2071  clib_host_to_net_u32
2072  (radv_info->adv_neighbor_reachable_time_in_msec)))
2073  {
2074  ip6_neighbor_syslog (vm, LOG_WARNING,
2075  "our AdvReachableTime on %U doesn't agree with %U",
2076  format_vnet_sw_if_index_name,
2077  vnm, sw_if_index0,
2078  format_ip6_address,
2079  &ip0->src_address);
2080  }
2081 
2082  /* check for MTU or prefix options or .. */
2083  u8 *opt_hdr = (u8 *) (h0 + 1);
2084  while (options_len0 > 0)
2085  {
2086  icmp6_neighbor_discovery_option_header_t *o0 =
2087  (icmp6_neighbor_discovery_option_header_t *)
2088  opt_hdr;
2089  int opt_len = o0->n_data_u64s << 3;
2090  icmp6_neighbor_discovery_option_type_t option_type =
2091  o0->type;
2092 
2093  if (options_len0 < 2)
2094  {
2095  ip6_neighbor_syslog (vm, LOG_ERR,
2096  "malformed RA packet on %U from %U",
2097  format_vnet_sw_if_index_name,
2098  vnm, sw_if_index0,
2099  format_ip6_address,
2100  &ip0->src_address);
2101  break;
2102  }
2103 
2104  if (opt_len == 0)
2105  {
2106  ip6_neighbor_syslog (vm, LOG_ERR,
2107  " zero length option in RA on %U from %U",
2108  format_vnet_sw_if_index_name,
2109  vnm, sw_if_index0,
2110  format_ip6_address,
2111  &ip0->src_address);
2112  break;
2113  }
2114  else if (opt_len > options_len0)
2115  {
2116  ip6_neighbor_syslog (vm, LOG_ERR,
2117  "option length in RA packet greater than total length on %U from %U",
2118  format_vnet_sw_if_index_name,
2119  vnm, sw_if_index0,
2120  format_ip6_address,
2121  &ip0->src_address);
2122  break;
2123  }
2124 
2125  options_len0 -= opt_len;
2126  opt_hdr += opt_len;
2127 
2128  switch (option_type)
2129  {
2130  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address:
2131  {
2132  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
2133  * h =
2134  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
2135  *) (o0);
2136 
2137  if (opt_len < sizeof (*h))
2138  break;
2139 
2140  memcpy (r.slla, h->ethernet_address, 6);
2141  }
2142  break;
2143 
2144  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_mtu:
2145  {
2146  icmp6_neighbor_discovery_mtu_option_t *h =
2147  (icmp6_neighbor_discovery_mtu_option_t
2148  *) (o0);
2149 
2150  if (opt_len < sizeof (*h))
2151  break;
2152 
2153  r.mtu = clib_net_to_host_u32 (h->mtu);
2154 
2155  if ((h->mtu && radv_info->adv_link_mtu) &&
2156  (h->mtu !=
2157  clib_host_to_net_u32
2158  (radv_info->adv_link_mtu)))
2159  {
2160  ip6_neighbor_syslog (vm, LOG_WARNING,
2161  "our AdvLinkMTU on %U doesn't agree with %U",
2162  format_vnet_sw_if_index_name,
2163  vnm, sw_if_index0,
2164  format_ip6_address,
2165  &ip0->src_address);
2166  }
2167  }
2168  break;
2169 
2170  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_prefix_information:
2171  {
2172  icmp6_neighbor_discovery_prefix_information_option_t
2173  * h =
2174  (icmp6_neighbor_discovery_prefix_information_option_t
2175  *) (o0);
2176 
2177  /* validate advertised prefix options */
2178  ip6_radv_prefix_t *pr_info;
2179  u32 preferred, valid;
2180 
2181  if (opt_len < sizeof (*h))
2182  break;
2183 
2184  vec_validate (r.prefixes,
2185  vec_len (r.prefixes));
2186  ra_report_prefix_info_t *prefix =
2187  vec_elt_at_index (r.prefixes,
2188  vec_len (r.prefixes) - 1);
2189 
2190  preferred =
2191  clib_net_to_host_u32 (h->preferred_time);
2192  valid = clib_net_to_host_u32 (h->valid_time);
2193 
2194  prefix->preferred_time = preferred;
2195  prefix->valid_time = valid;
2196  prefix->flags = h->flags & 0xc0;
2197  prefix->dst_address_length =
2198  h->dst_address_length;
2199  prefix->dst_address = h->dst_address;
2200 
2201  /* look for matching prefix - if we our advertising it, it better be consistant */
2202  /* *INDENT-OFF* */
2203  pool_foreach (pr_info, radv_info->adv_prefixes_pool,
2204  ({
2205 
2206  ip6_address_t mask;
2207  ip6_address_mask_from_width(&mask, pr_info->prefix_len);
2208 
2209  if(pr_info->enabled &&
2210  (pr_info->prefix_len == h->dst_address_length) &&
2211  ip6_address_is_equal_masked (&pr_info->prefix, &h->dst_address, &mask))
2212  {
2213  /* found it */
2214  if(!pr_info->decrement_lifetime_flag &&
2215  valid != pr_info->adv_valid_lifetime_in_secs)
2216  {
2217  ip6_neighbor_syslog(vm, LOG_WARNING,
2218  "our ADV validlifetime on %U for %U does not agree with %U",
2219  format_vnet_sw_if_index_name, vnm, sw_if_index0,format_ip6_address, &pr_info->prefix,
2220  format_ip6_address, &h->dst_address);
2221  }
2222  if(!pr_info->decrement_lifetime_flag &&
2223  preferred != pr_info->adv_pref_lifetime_in_secs)
2224  {
2225  ip6_neighbor_syslog(vm, LOG_WARNING,
2226  "our ADV preferredlifetime on %U for %U does not agree with %U",
2227  format_vnet_sw_if_index_name, vnm, sw_if_index0,format_ip6_address, &pr_info->prefix,
2228  format_ip6_address, &h->dst_address);
2229  }
2230  }
2231  break;
2232  }));
2233  /* *INDENT-ON* */
2234  break;
2235  }
2236  default:
2237  /* skip this one */
2238  break;
2239  }
2240  }
2241  ra_publish (&r);
2242  }
2243  }
2244  }
2245 
2246  p0->error = error_node->errors[error0];
2247 
2248  if (error0 != ICMP6_ERROR_NONE)
2249  vlib_error_count (vm, error_node->node_index, error0, 1);
2250 
2251  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
2252  to_next, n_left_to_next,
2253  bi0, next0);
2254  }
2255 
2256  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
2257  }
2258 
2259  /* Account for router advertisements received. */
2260  vlib_error_count (vm, error_node->node_index,
2261  ICMP6_ERROR_ROUTER_ADVERTISEMENTS_RX,
2262  n_advertisements_rcvd);
2263 
2264  return frame->n_vectors;
2265 }
2266 
2267 static inline f64
2268 random_f64_from_to (f64 from, f64 to)
2269 {
2270  static u32 seed = 0;
2271  static u8 seed_set = 0;
2272  if (!seed_set)
2273  {
2274  seed = random_default_seed ();
2275  seed_set = 1;
2276  }
2277  return random_f64 (&seed) * (to - from) + from;
2278 }
2279 
2280 static inline u8
2281 get_mac_address (u32 sw_if_index, u8 * address)
2282 {
2283  vnet_main_t *vnm = vnet_get_main ();
2284  vnet_hw_interface_t *hw_if = vnet_get_sup_hw_interface (vnm, sw_if_index);
2285  if (!hw_if->hw_address)
2286  return 1;
2287  clib_memcpy (address, hw_if->hw_address, 6);
2288  return 0;
2289 }
2290 
2291 static inline vlib_buffer_t *
2292 create_buffer_for_rs (vlib_main_t * vm, ip6_radv_t * radv_info)
2293 {
2294  u32 bi0;
2295  vlib_buffer_t *p0;
2296  vlib_buffer_free_list_t *fl;
2297  icmp6_router_solicitation_header_t *rh;
2298  u16 payload_length;
2299  int bogus_length;
2300  u32 sw_if_index;
2301 
2302  sw_if_index = radv_info->sw_if_index;
2303 
2304  if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
2305  {
2306  clib_warning ("buffer allocation failure");
2307  return 0;
2308  }
2309 
2310  p0 = vlib_get_buffer (vm, bi0);
2311  fl = vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
2312  vlib_buffer_init_for_free_list (p0, fl);
2313  VLIB_BUFFER_TRACE_TRAJECTORY_INIT (p0);
2314  p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
2315 
2316  vnet_buffer (p0)->sw_if_index[VLIB_RX] = sw_if_index;
2317  vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index;
2318 
2319  vnet_buffer (p0)->ip.adj_index[VLIB_TX] = radv_info->mcast_adj_index;
2320 
2321  rh = vlib_buffer_get_current (p0);
2322  p0->current_length = sizeof (*rh);
2323 
2324  rh->neighbor.icmp.type = ICMP6_router_solicitation;
2325  rh->neighbor.icmp.code = 0;
2326  rh->neighbor.icmp.checksum = 0;
2327  rh->neighbor.reserved_must_be_zero = 0;
2328 
2329  rh->link_layer_option.header.type =
2330  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
2331  if (0 != get_mac_address (sw_if_index,
2332  rh->link_layer_option.ethernet_address))
2333  {
2334  clib_warning ("interface with sw_if_index %u has no mac address",
2335  sw_if_index);
2336  vlib_buffer_free (vm, &bi0, 1);
2337  return 0;
2338  }
2339  rh->link_layer_option.header.n_data_u64s = 1;
2340 
2341  payload_length = sizeof (rh->neighbor) + sizeof (u64);
2342 
2343  rh->ip.ip_version_traffic_class_and_flow_label =
2344  clib_host_to_net_u32 (0x6 << 28);
2345  rh->ip.payload_length = clib_host_to_net_u16 (payload_length);
2346  rh->ip.protocol = IP_PROTOCOL_ICMP6;
2347  rh->ip.hop_limit = 255;
2348  rh->ip.src_address = radv_info->link_local_address;
2349  /* set address ff02::2 */
2350  rh->ip.dst_address.as_u64[0] = clib_host_to_net_u64 (0xff02L << 48);
2351  rh->ip.dst_address.as_u64[1] = clib_host_to_net_u64 (2);
2352 
2353  rh->neighbor.icmp.checksum = ip6_tcp_udp_icmp_compute_checksum (vm, p0,
2354  &rh->ip,
2355  &bogus_length);
2356 
2357  return p0;
2358 }
2359 
2360 static inline void
2361 stop_sending_rs (vlib_main_t * vm, ip6_radv_t * ra)
2362 {
2363  u32 bi0;
2364 
2365  ra->keep_sending_rs = 0;
2366  if (ra->buffer)
2367  {
2368  bi0 = vlib_get_buffer_index (vm, ra->buffer);
2369  vlib_buffer_free (vm, &bi0, 1);
2370  ra->buffer = 0;
2371  }
2372 }
2373 
2374 static inline bool
2375 check_send_rs (vlib_main_t * vm, ip6_radv_t * radv_info, f64 current_time,
2376  f64 * due_time)
2377 {
2378  vlib_buffer_t *p0;
2379  vlib_frame_t *f;
2380  u32 *to_next;
2381  u32 next_index;
2382  vlib_buffer_t *c0;
2383  u32 ci0;
2384 
2385  icmp6_send_router_solicitation_params_t *params;
2386 
2387  if (!radv_info->keep_sending_rs)
2388  return false;
2389 
2390  params = &radv_info->params;
2391 
2392  if (radv_info->due_time > current_time)
2393  {
2394  *due_time = radv_info->due_time;
2395  return true;
2396  }
2397 
2398  p0 = radv_info->buffer;
2399 
2400  next_index = ip6_rewrite_mcast_node.index;
2401 
2402  c0 = vlib_buffer_copy (vm, p0);
2403  ci0 = vlib_get_buffer_index (vm, c0);
2404 
2405  f = vlib_get_frame_to_node (vm, next_index);
2406  to_next = vlib_frame_vector_args (f);
2407  to_next[0] = ci0;
2408  f->n_vectors = 1;
2409  vlib_put_frame_to_node (vm, next_index, f);
2410 
2411  if (params->mrc != 0 && --radv_info->n_left == 0)
2412  stop_sending_rs (vm, radv_info);
2413  else
2414  {
2415  radv_info->sleep_interval =
2416  (2 + random_f64_from_to (-0.1, 0.1)) * radv_info->sleep_interval;
2417  if (radv_info->sleep_interval > params->mrt)
2418  radv_info->sleep_interval =
2419  (1 + random_f64_from_to (-0.1, 0.1)) * params->mrt;
2420 
2421  radv_info->due_time = current_time + radv_info->sleep_interval;
2422 
2423  if (params->mrd != 0
2424  && current_time > radv_info->start_time + params->mrd)
2425  stop_sending_rs (vm, radv_info);
2426  else
2427  *due_time = radv_info->due_time;
2428  }
2429 
2430  return radv_info->keep_sending_rs;
2431 }
2432 
2433 static uword
2434 send_rs_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
2435  vlib_frame_t * f0)
2436 {
2437  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2438  ip6_radv_t *radv_info;
2439  uword *event_data = 0;
2440  f64 sleep_time = 1e9;
2441  f64 current_time;
2442  f64 due_time;
2443  f64 dt = 0;
2444 
2445  while (true)
2446  {
2447  vlib_process_wait_for_event_or_clock (vm, sleep_time);
2448  vlib_process_get_events (vm, &event_data);
2449  vec_reset_length (event_data);
2450 
2451  current_time = vlib_time_now (vm);
2452  do
2453  {
2454  due_time = current_time + 1e9;
2455  /* *INDENT-OFF* */
2456  pool_foreach (radv_info, nm->if_radv_pool,
2457  ({
2458  if (check_send_rs (vm, radv_info, current_time, &dt)
2459  && (dt < due_time))
2460  due_time = dt;
2461  }));
2462  /* *INDENT-ON* */
2463  current_time = vlib_time_now (vm);
2464  }
2465  while (due_time < current_time);
2466 
2467  sleep_time = due_time - current_time;
2468  }
2469 
2470  return 0;
2471 }
2472 
2473 /* *INDENT-OFF* */
2474 VLIB_REGISTER_NODE (send_rs_process_node) = {
2475  .function = send_rs_process,
2476  .type = VLIB_NODE_TYPE_PROCESS,
2477  .name = "send-rs-process",
2478 };
2479 /* *INDENT-ON* */
2480 
2481 void
2482 icmp6_send_router_solicitation (vlib_main_t * vm, u32 sw_if_index, u8 stop,
2483  icmp6_send_router_solicitation_params_t *
2484  params)
2485 {
2486  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2487  u32 rai;
2488  ip6_radv_t *ra = 0;
2489 
2490  ASSERT (~0 != sw_if_index);
2491 
2492  rai = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2493  ra = pool_elt_at_index (nm->if_radv_pool, rai);
2494 
2495  stop_sending_rs (vm, ra);
2496 
2497  if (!stop)
2498  {
2499  ra->keep_sending_rs = 1;
2500  ra->params = *params;
2501  ra->n_left = params->mrc;
2502  ra->start_time = vlib_time_now (vm);
2503  ra->sleep_interval = (1 + random_f64_from_to (-0.1, 0.1)) * params->irt;
2504  ra->due_time = 0; /* send first packet ASAP */
2505  ra->buffer = create_buffer_for_rs (vm, ra);
2506  if (!ra->buffer)
2507  ra->keep_sending_rs = 0;
2508  else
2509  vlib_process_signal_event (vm, send_rs_process_node.index, 1, 0);
2510  }
2511 }
2512 
2513 /**
2514  * @brief Add a multicast Address to the advertised MLD set
2515  */
2516 static void
2517 ip6_neighbor_add_mld_prefix (ip6_radv_t * radv_info, ip6_address_t * addr)
2518 {
2519  ip6_mldp_group_t *mcast_group_info;
2520  uword *p;
2521 
2522  /* lookup mldp info for this interface */
2523  p = mhash_get (&radv_info->address_to_mldp_index, addr);
2524  mcast_group_info =
2525  p ? pool_elt_at_index (radv_info->mldp_group_pool, p[0]) : 0;
2526 
2527  /* add address */
2528  if (!mcast_group_info)
2529  {
2530  /* add */
2531  u32 mi;
2532  pool_get (radv_info->mldp_group_pool, mcast_group_info);
2533 
2534  mi = mcast_group_info - radv_info->mldp_group_pool;
2535  mhash_set (&radv_info->address_to_mldp_index, addr, mi, /* old_value */
2536  0);
2537 
2538  mcast_group_info->type = 4;
2539  mcast_group_info->mcast_source_address_pool = 0;
2540  mcast_group_info->num_sources = 0;
2541  clib_memcpy (&mcast_group_info->mcast_address, addr,
2542  sizeof (ip6_address_t));
2543  }
2544 }
2545 
2546 /**
2547  * @brief Delete a multicast Address from the advertised MLD set
2548  */
2549 static void
2550 ip6_neighbor_del_mld_prefix (ip6_radv_t * radv_info, ip6_address_t * addr)
2551 {
2552  ip6_mldp_group_t *mcast_group_info;
2553  uword *p;
2554 
2555  p = mhash_get (&radv_info->address_to_mldp_index, &addr);
2556  mcast_group_info =
2557  p ? pool_elt_at_index (radv_info->mldp_group_pool, p[0]) : 0;
2558 
2559  if (mcast_group_info)
2560  {
2561  mhash_unset (&radv_info->address_to_mldp_index, &addr,
2562  /* old_value */ 0);
2563  pool_put (radv_info->mldp_group_pool, mcast_group_info);
2564  }
2565 }
2566 
2567 /**
2568  * @brief Add a multicast Address to the advertised MLD set
2569  */
2570 static void
2571 ip6_neighbor_add_mld_grp (ip6_radv_t * a,
2572  ip6_multicast_address_scope_t scope,
2573  ip6_multicast_link_local_group_id_t group)
2574 {
2575  ip6_address_t addr;
2576 
2577  ip6_set_reserved_multicast_address (&addr, scope, group);
2578 
2579  ip6_neighbor_add_mld_prefix (a, &addr);
2580 }
2581 
2582 /**
2583  * @brief create and initialize router advertisement parameters with default
2584  * values for this intfc
2585  */
2586 u32
2587 ip6_neighbor_sw_interface_add_del (vnet_main_t * vnm,
2588  u32 sw_if_index, u32 is_add)
2589 {
2590  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2591  ip6_radv_t *a = 0;
2592  u32 ri = ~0;
2593  vnet_sw_interface_t *sw_if0;
2594  ethernet_interface_t *eth_if0 = 0;
2595 
2596  /* lookup radv container - ethernet interfaces only */
2597  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
2598  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
2599  eth_if0 = ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
2600 
2601  if (!eth_if0)
2602  return ri;
2603 
2604  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2605  ~0);
2606  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2607 
2608  if (ri != ~0)
2609  {
2610  a = pool_elt_at_index (nm->if_radv_pool, ri);
2611 
2612  if (!is_add)
2613  {
2614  ip6_radv_prefix_t *p;
2615  ip6_mldp_group_t *m;
2616 
2617  /* release the lock on the interface's mcast adj */
2618  adj_unlock (a->mcast_adj_index);
2619 
2620  /* clean up prefix and MDP pools */
2621  /* *INDENT-OFF* */
2622  pool_flush(p, a->adv_prefixes_pool,
2623  ({
2624  mhash_unset (&a->address_to_prefix_index, &p->prefix, 0);
2625  }));
2626  pool_flush (m, a->mldp_group_pool,
2627  ({
2628  mhash_unset (&a->address_to_mldp_index, &m->mcast_address, 0);
2629  }));
2630  /* *INDENT-ON* */
2631 
2632  pool_free (a->mldp_group_pool);
2633  pool_free (a->adv_prefixes_pool);
2634 
2635  mhash_free (&a->address_to_prefix_index);
2636  mhash_free (&a->address_to_mldp_index);
2637 
2638  if (a->keep_sending_rs)
2639  a->keep_sending_rs = 0;
2640 
2641  pool_put (nm->if_radv_pool, a);
2642  nm->if_radv_pool_index_by_sw_if_index[sw_if_index] = ~0;
2643  ri = ~0;
2644  }
2645  }
2646  else
2647  {
2648  if (is_add)
2649  {
2650  pool_get (nm->if_radv_pool, a);
2651 
2652  ri = a - nm->if_radv_pool;
2653  nm->if_radv_pool_index_by_sw_if_index[sw_if_index] = ri;
2654 
2655  /* initialize default values (most of which are zero) */
2656  memset (a, 0, sizeof (a[0]));
2657 
2658  a->sw_if_index = sw_if_index;
2659  a->max_radv_interval = DEF_MAX_RADV_INTERVAL;
2660  a->min_radv_interval = DEF_MIN_RADV_INTERVAL;
2661  a->curr_hop_limit = DEF_CURR_HOP_LIMIT;
2662  a->adv_router_lifetime_in_sec = DEF_DEF_RTR_LIFETIME;
2663 
2664  /* send ll address source address option */
2665  a->adv_link_layer_address = 1;
2666 
2667  a->min_delay_between_radv = MIN_DELAY_BETWEEN_RAS;
2668  a->max_delay_between_radv = MAX_DELAY_BETWEEN_RAS;
2669  a->max_rtr_default_lifetime = MAX_DEF_RTR_LIFETIME;
2670  a->seed = (u32) clib_cpu_time_now ();
2671  (void) random_u32 (&a->seed);
2672  a->randomizer = clib_cpu_time_now ();
2673  (void) random_u64 (&a->randomizer);
2674 
2675  a->initial_adverts_count = MAX_INITIAL_RTR_ADVERTISEMENTS;
2676  a->initial_adverts_sent = a->initial_adverts_count - 1;
2677  a->initial_adverts_interval = MAX_INITIAL_RTR_ADVERT_INTERVAL;
2678 
2679  /* deafult is to send */
2680  a->send_radv = 1;
2681 
2682  /* fill in radv_info for this interface that will be needed later */
2683  a->adv_link_mtu =
2684  vnet_sw_interface_get_mtu (vnm, sw_if_index, VNET_MTU_IP6);
2685 
2686  clib_memcpy (a->link_layer_address, eth_if0->address, 6);
2687 
2688  /* fill in default link-local address (this may be overridden) */
2689  ip6_link_local_address_from_ethernet_address
2690  (&a->link_local_address, eth_if0->address);
2691 
2692  mhash_init (&a->address_to_prefix_index, sizeof (uword),
2693  sizeof (ip6_address_t));
2694  mhash_init (&a->address_to_mldp_index, sizeof (uword),
2695  sizeof (ip6_address_t));
2696 
2697  a->mcast_adj_index = adj_mcast_add_or_lock (FIB_PROTOCOL_IP6,
2698  VNET_LINK_IP6,
2699  sw_if_index);
2700 
2701  a->keep_sending_rs = 0;
2702 
2703  /* add multicast groups we will always be reporting */
2704  ip6_neighbor_add_mld_grp (a,
2705  IP6_MULTICAST_SCOPE_link_local,
2706  IP6_MULTICAST_GROUP_ID_all_hosts);
2707  ip6_neighbor_add_mld_grp (a,
2708  IP6_MULTICAST_SCOPE_link_local,
2709  IP6_MULTICAST_GROUP_ID_all_routers);
2710  ip6_neighbor_add_mld_grp (a,
2711  IP6_MULTICAST_SCOPE_link_local,
2712  IP6_MULTICAST_GROUP_ID_mldv2_routers);
2713  }
2714  }
2715  return ri;
2716 }
2717 
2718 /* send an mldpv2 report */
2719 static void
2720 ip6_neighbor_send_mldpv2_report (u32 sw_if_index)
2721 {
2722  vnet_main_t *vnm = vnet_get_main ();
2723  vlib_main_t *vm = vnm->vlib_main;
2724  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2725  vnet_sw_interface_t *sw_if0;
2726  ethernet_interface_t *eth_if0;
2727  u32 ri;
2728  int bogus_length;
2729 
2730  ip6_radv_t *radv_info;
2731  u16 payload_length;
2732  vlib_buffer_t *b0;
2733  ip6_header_t *ip0;
2734  u32 *to_next;
2735  vlib_frame_t *f;
2736  u32 bo0;
2737  u32 n_to_alloc = 1;
2738  u32 n_allocated;
2739 
2740  icmp6_multicast_listener_report_header_t *rh0;
2741  icmp6_multicast_listener_report_packet_t *rp0;
2742 
2743  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
2744  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
2745  eth_if0 = ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
2746 
2747  if (!eth_if0 || !vnet_sw_interface_is_admin_up (vnm, sw_if_index))
2748  return;
2749 
2750  /* look up the radv_t information for this interface */
2751  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2752  ~0);
2753 
2754  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2755 
2756  if (ri == ~0)
2757  return;
2758 
2759  /* send report now - build a mldpv2 report packet */
2760  n_allocated = vlib_buffer_alloc_from_free_list (vm,
2761  &bo0,
2762  n_to_alloc,
2763  VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
2764  if (PREDICT_FALSE (n_allocated == 0))
2765  {
2766  clib_warning ("buffer allocation failure");
2767  return;
2768  }
2769 
2770  b0 = vlib_get_buffer (vm, bo0);
2771 
2772  /* adjust the sizeof the buffer to just include the ipv6 header */
2773  b0->current_length = sizeof (icmp6_multicast_listener_report_packet_t);
2774 
2775  payload_length = sizeof (icmp6_multicast_listener_report_header_t);
2776 
2777  b0->error = ICMP6_ERROR_NONE;
2778 
2779  rp0 = vlib_buffer_get_current (b0);
2780  ip0 = (ip6_header_t *) & rp0->ip;
2781  rh0 = (icmp6_multicast_listener_report_header_t *) & rp0->report_hdr;
2782 
2783  memset (rp0, 0x0, sizeof (icmp6_multicast_listener_report_packet_t));
2784 
2785  ip0->ip_version_traffic_class_and_flow_label =
2786  clib_host_to_net_u32 (0x6 << 28);
2787 
2788  ip0->protocol = IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS;
2789  /* for DEBUG - vnet driver won't seem to emit router alerts */
2790  /* ip0->protocol = IP_PROTOCOL_ICMP6; */
2791  ip0->hop_limit = 1;
2792 
2793  rh0->icmp.type = ICMP6_multicast_listener_report_v2;
2794 
2795  /* source address MUST be the link-local address */
2796  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
2797  ip0->src_address = radv_info->link_local_address;
2798 
2799  /* destination is all mldpv2 routers */
2800  ip6_set_reserved_multicast_address (&ip0->dst_address,
2801  IP6_MULTICAST_SCOPE_link_local,
2802  IP6_MULTICAST_GROUP_ID_mldv2_routers);
2803 
2804  /* add reports here */
2805  ip6_mldp_group_t *m;
2806  int num_addr_records = 0;
2807  icmp6_multicast_address_record_t rr;
2808 
2809  /* fill in the hop-by-hop extension header (router alert) info */
2810  rh0->ext_hdr.next_hdr = IP_PROTOCOL_ICMP6;
2811  rh0->ext_hdr.n_data_u64s = 0;
2812 
2813  rh0->alert.type = IP6_MLDP_ALERT_TYPE;
2814  rh0->alert.len = 2;
2815  rh0->alert.value = 0;
2816 
2817  rh0->pad.type = 1;
2818  rh0->pad.len = 0;
2819 
2820  rh0->icmp.checksum = 0;
2821 
2822  /* *INDENT-OFF* */
2823  pool_foreach (m, radv_info->mldp_group_pool,
2824  ({
2825  rr.type = m->type;
2826  rr.aux_data_len_u32s = 0;
2827  rr.num_sources = clib_host_to_net_u16 (m->num_sources);
2828  clib_memcpy(&rr.mcast_addr, &m->mcast_address, sizeof(ip6_address_t));
2829 
2830  num_addr_records++;
2831 
2832  vlib_buffer_add_data
2833  (vm, vlib_buffer_get_free_list_index (b0), bo0,
2834  (void *)&rr, sizeof(icmp6_multicast_address_record_t));
2835 
2836  payload_length += sizeof( icmp6_multicast_address_record_t);
2837  }));
2838  /* *INDENT-ON* */
2839 
2840  rh0->rsvd = 0;
2841  rh0->num_addr_records = clib_host_to_net_u16 (num_addr_records);
2842 
2843  /* update lengths */
2844  ip0->payload_length = clib_host_to_net_u16 (payload_length);
2845 
2846  rh0->icmp.checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
2847  &bogus_length);
2848  ASSERT (bogus_length == 0);
2849 
2850  /*
2851  * OK to override w/ no regard for actual FIB, because
2852  * ip6-rewrite only looks at the adjacency.
2853  */
2854  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
2855  vnet_main.local_interface_sw_if_index;
2856 
2857  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = radv_info->mcast_adj_index;
2858  b0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
2859 
2860  vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "ip6-rewrite-mcast");
2861 
2862  f = vlib_get_frame_to_node (vm, node->index);
2863  to_next = vlib_frame_vector_args (f);
2864  to_next[0] = bo0;
2865  f->n_vectors = 1;
2866 
2867  vlib_put_frame_to_node (vm, node->index, f);
2868  return;
2869 }
2870 
2871 /* *INDENT-OFF* */
2872 VLIB_REGISTER_NODE (ip6_icmp_router_solicitation_node,static) =
2873 {
2874  .function = icmp6_router_solicitation,
2875  .name = "icmp6-router-solicitation",
2876 
2877  .vector_size = sizeof (u32),
2878 
2879  .format_trace = format_icmp6_input_trace,
2880 
2881  .n_next_nodes = ICMP6_ROUTER_SOLICITATION_N_NEXT,
2882  .next_nodes = {
2883  [ICMP6_ROUTER_SOLICITATION_NEXT_DROP] = "ip6-drop",
2884  [ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW] = "ip6-rewrite-mcast",
2885  [ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX] = "interface-output",
2886  },
2887 };
2888 /* *INDENT-ON* */
2889 
2890 /* send a RA or update the timer info etc.. */
2891 static uword
2892 ip6_neighbor_process_timer_event (vlib_main_t * vm,
2893  vlib_node_runtime_t * node,
2894  vlib_frame_t * frame)
2895 {
2896  vnet_main_t *vnm = vnet_get_main ();
2897  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2898  ip6_radv_t *radv_info;
2899  vlib_frame_t *f = 0;
2900  u32 n_this_frame = 0;
2901  u32 n_left_to_next = 0;
2902  u32 *to_next = 0;
2903  u32 bo0;
2904  icmp6_router_solicitation_header_t *h0;
2905  vlib_buffer_t *b0;
2906  f64 now = vlib_time_now (vm);
2907 
2908  /* Interface ip6 radv info list */
2909  /* *INDENT-OFF* */
2910  pool_foreach (radv_info, nm->if_radv_pool,
2911  ({
2912  if( !vnet_sw_interface_is_admin_up (vnm, radv_info->sw_if_index))
2913  {
2914  radv_info->initial_adverts_sent = radv_info->initial_adverts_count-1;
2915  radv_info->next_multicast_time = now;
2916  radv_info->last_multicast_time = now;
2917  radv_info->last_radv_time = 0;
2918  radv_info->all_routers_mcast = 0;
2919  continue;
2920  }
2921 
2922  /* Make sure that we've joined the all-routers multicast group */
2923  if(!radv_info->all_routers_mcast)
2924  {
2925  /* send MDLP_REPORT_EVENT message */
2926  ip6_neighbor_send_mldpv2_report(radv_info->sw_if_index);
2927  radv_info->all_routers_mcast = 1;
2928  }
2929 
2930  /* is it time to send a multicast RA on this interface? */
2931  if(radv_info->send_radv && (now >= radv_info->next_multicast_time))
2932  {
2933  u32 n_to_alloc = 1;
2934  u32 n_allocated;
2935 
2936  f64 rfn = (radv_info->max_radv_interval - radv_info->min_radv_interval) *
2937  random_f64 (&radv_info->seed) + radv_info->min_radv_interval;
2938 
2939  /* multicast send - compute next multicast send time */
2940  if( radv_info->initial_adverts_sent > 0)
2941  {
2942  radv_info->initial_adverts_sent--;
2943  if(rfn > radv_info-> initial_adverts_interval)
2944  rfn = radv_info-> initial_adverts_interval;
2945 
2946  /* check to see if we are ceasing to send */
2947  if( radv_info->initial_adverts_sent == 0)
2948  if(radv_info->cease_radv)
2949  radv_info->send_radv = 0;
2950  }
2951 
2952  radv_info->next_multicast_time = rfn + now;
2953  radv_info->last_multicast_time = now;
2954 
2955  /* send advert now - build a "solicted" router advert with unspecified source address */
2956  n_allocated = vlib_buffer_alloc_from_free_list
2957  (vm, &bo0, n_to_alloc, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
2958 
2959  if (PREDICT_FALSE(n_allocated == 0))
2960  {
2961  clib_warning ("buffer allocation failure");
2962  continue;
2963  }
2964  b0 = vlib_get_buffer (vm, bo0);
2965  b0->current_length = sizeof( icmp6_router_solicitation_header_t);
2966  b0->error = ICMP6_ERROR_NONE;
2967  vnet_buffer (b0)->sw_if_index[VLIB_RX] = radv_info->sw_if_index;
2968 
2969  h0 = vlib_buffer_get_current (b0);
2970 
2971  memset (h0, 0, sizeof (icmp6_router_solicitation_header_t));
2972 
2973  h0->ip.ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (0x6 << 28);
2974  h0->ip.payload_length = clib_host_to_net_u16 (sizeof (icmp6_router_solicitation_header_t)
2975  - STRUCT_OFFSET_OF (icmp6_router_solicitation_header_t, neighbor));
2976  h0->ip.protocol = IP_PROTOCOL_ICMP6;
2977  h0->ip.hop_limit = 255;
2978 
2979  /* set src/dst address as "unspecified" this marks this packet as internally generated rather than recieved */
2980  h0->ip.src_address.as_u64[0] = 0;
2981  h0->ip.src_address.as_u64[1] = 0;
2982 
2983  h0->ip.dst_address.as_u64[0] = 0;
2984  h0->ip.dst_address.as_u64[1] = 0;
2985 
2986  h0->neighbor.icmp.type = ICMP6_router_solicitation;
2987 
2988  if (PREDICT_FALSE(f == 0))
2989  {
2990  f = vlib_get_frame_to_node (vm, ip6_icmp_router_solicitation_node.index);
2991  to_next = vlib_frame_vector_args (f);
2992  n_left_to_next = VLIB_FRAME_SIZE;
2993  n_this_frame = 0;
2994  }
2995 
2996  n_this_frame++;
2997  n_left_to_next--;
2998  to_next[0] = bo0;
2999  to_next += 1;
3000 
3001  if (PREDICT_FALSE(n_left_to_next == 0))
3002  {
3003  f->n_vectors = n_this_frame;
3004  vlib_put_frame_to_node (vm, ip6_icmp_router_solicitation_node.index, f);
3005  f = 0;
3006  }
3007  }
3008  }));
3009  /* *INDENT-ON* */
3010 
3011  if (f)
3012  {
3013  ASSERT (n_this_frame);
3014  f->n_vectors = n_this_frame;
3015  vlib_put_frame_to_node (vm, ip6_icmp_router_solicitation_node.index, f);
3016  }
3017  return 0;
3018 }
3019 
3020 static uword
3021 ip6_icmp_neighbor_discovery_event_process (vlib_main_t * vm,
3022  vlib_node_runtime_t * node,
3023  vlib_frame_t * frame)
3024 {
3025  uword event_type;
3026  ip6_icmp_neighbor_discovery_event_data_t *event_data;
3027 
3028  /* init code here */
3029 
3030  while (1)
3031  {
3032  vlib_process_wait_for_event_or_clock (vm, 1. /* seconds */ );
3033 
3034  event_data = vlib_process_get_event_data (vm, &event_type);
3035 
3036  if (!event_data)
3037  {
3038  /* No events found: timer expired. */
3039  /* process interface list and send RAs as appropriate, update timer info */
3040  ip6_neighbor_process_timer_event (vm, node, frame);
3041  }
3042  else
3043  {
3044  switch (event_type)
3045  {
3046 
3047  case ICMP6_ND_EVENT_INIT:
3048  break;
3049 
3050  case ~0:
3051  break;
3052 
3053  default:
3054  ASSERT (0);
3055  }
3056 
3057  if (event_data)
3058  _vec_len (event_data) = 0;
3059  }
3060  }
3061  return frame->n_vectors;
3062 }
3063 
3064 /* *INDENT-OFF* */
3065 VLIB_REGISTER_NODE (ip6_icmp_router_advertisement_node,static) =
3066 {
3067  .function = icmp6_router_advertisement,
3068  .name = "icmp6-router-advertisement",
3069 
3070  .vector_size = sizeof (u32),
3071 
3072  .format_trace = format_icmp6_input_trace,
3073 
3074  .n_next_nodes = 1,
3075  .next_nodes = {
3076  [0] = "ip6-drop",
3077  },
3078 };
3079 /* *INDENT-ON* */
3080 
3081 vlib_node_registration_t ip6_icmp_neighbor_discovery_event_node = {
3082 
3083  .function = ip6_icmp_neighbor_discovery_event_process,
3084  .name = "ip6-icmp-neighbor-discovery-event-process",
3085  .type = VLIB_NODE_TYPE_PROCESS,
3086 };
3087 
3088 static uword
3089 icmp6_neighbor_solicitation (vlib_main_t * vm,
3090  vlib_node_runtime_t * node, vlib_frame_t * frame)
3091 {
3092  return icmp6_neighbor_solicitation_or_advertisement (vm, node, frame,
3093  /* is_solicitation */
3094  1);
3095 }
3096 
3097 static uword
3098 icmp6_neighbor_advertisement (vlib_main_t * vm,
3099  vlib_node_runtime_t * node,
3100  vlib_frame_t * frame)
3101 {
3102  return icmp6_neighbor_solicitation_or_advertisement (vm, node, frame,
3103  /* is_solicitation */
3104  0);
3105 }
3106 
3107 /* *INDENT-OFF* */
3108 VLIB_REGISTER_NODE (ip6_icmp_neighbor_solicitation_node,static) =
3109 {
3110  .function = icmp6_neighbor_solicitation,
3111  .name = "icmp6-neighbor-solicitation",
3112 
3113  .vector_size = sizeof (u32),
3114 
3115  .format_trace = format_icmp6_input_trace,
3116 
3117  .n_next_nodes = ICMP6_NEIGHBOR_SOLICITATION_N_NEXT,
3118  .next_nodes = {
3119  [ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP] = "ip6-drop",
3120  [ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY] = "interface-output",
3121  },
3122 };
3123 /* *INDENT-ON* */
3124 
3125 /* *INDENT-OFF* */
3126 VLIB_REGISTER_NODE (ip6_icmp_neighbor_advertisement_node,static) =
3127 {
3128  .function = icmp6_neighbor_advertisement,
3129  .name = "icmp6-neighbor-advertisement",
3130 
3131  .vector_size = sizeof (u32),
3132 
3133  .format_trace = format_icmp6_input_trace,
3134 
3135  .n_next_nodes = 1,
3136  .next_nodes = {
3137  [0] = "ip6-drop",
3138  },
3139 };
3140 /* *INDENT-ON* */
3141 
3142 typedef enum
3143 {
3144  IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
3145  IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX,
3146  IP6_DISCOVER_NEIGHBOR_N_NEXT,
3147 } ip6_discover_neighbor_next_t;
3148 
3149 typedef enum
3150 {
3151  IP6_DISCOVER_NEIGHBOR_ERROR_DROP,
3152  IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT,
3153  IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS,
3154 } ip6_discover_neighbor_error_t;
3155 
3156 static uword
3157 ip6_discover_neighbor_inline (vlib_main_t * vm,
3158  vlib_node_runtime_t * node,
3159  vlib_frame_t * frame, int is_glean)
3160 {
3161  vnet_main_t *vnm = vnet_get_main ();
3162  ip6_main_t *im = &ip6_main;
3163  ip_lookup_main_t *lm = &im->lookup_main;
3164  u32 *from, *to_next_drop;
3165  uword n_left_from, n_left_to_next_drop;
3166  u64 seed;
3167  u32 thread_index = vm->thread_index;
3168  int bogus_length;
3169  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3170 
3171  if (node->flags & VLIB_NODE_FLAG_TRACE)
3172  ip6_forward_next_trace (vm, node, frame, VLIB_TX);
3173 
3174  seed = throttle_seed (&im->nd_throttle, thread_index, vlib_time_now (vm));
3175 
3176  from = vlib_frame_vector_args (frame);
3177  n_left_from = frame->n_vectors;
3178 
3179  while (n_left_from > 0)
3180  {
3181  vlib_get_next_frame (vm, node, IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
3182  to_next_drop, n_left_to_next_drop);
3183 
3184  while (n_left_from > 0 && n_left_to_next_drop > 0)
3185  {
3186  u32 pi0, adj_index0, sw_if_index0, drop0, r0, next0;
3187  vnet_hw_interface_t *hw_if0;
3188  ip6_radv_t *radv_info;
3189  ip_adjacency_t *adj0;
3190  vlib_buffer_t *p0;
3191  ip6_header_t *ip0;
3192 
3193  pi0 = from[0];
3194 
3195  p0 = vlib_get_buffer (vm, pi0);
3196 
3197  adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
3198 
3199  ip0 = vlib_buffer_get_current (p0);
3200 
3201  adj0 = adj_get (adj_index0);
3202 
3203  if (!is_glean)
3204  {
3205  ip0->dst_address.as_u64[0] =
3206  adj0->sub_type.nbr.next_hop.ip6.as_u64[0];
3207  ip0->dst_address.as_u64[1] =
3208  adj0->sub_type.nbr.next_hop.ip6.as_u64[1];
3209  }
3210 
3211  sw_if_index0 = adj0->rewrite_header.sw_if_index;
3212  vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0;
3213 
3214  /* combine the address and interface for a hash */
3215  r0 = ip6_address_hash_to_u64 (&ip0->dst_address) ^ sw_if_index0;
3216 
3217  drop0 = throttle_check (&im->nd_throttle, thread_index, r0, seed);
3218 
3219  from += 1;
3220  n_left_from -= 1;
3221  to_next_drop[0] = pi0;
3222  to_next_drop += 1;
3223  n_left_to_next_drop -= 1;
3224 
3225  hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
3226 
3227  /* If the interface is link-down, drop the pkt */
3228  if (!(hw_if0->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
3229  drop0 = 1;
3230 
3231  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) > sw_if_index0)
3232  {
3233  u32 ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
3234 
3235  if (ri != ~0)
3236  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3237  else
3238  drop0 = 1;
3239  }
3240  else
3241  drop0 = 1;
3242 
3243  /*
3244  * the adj has been updated to a rewrite but the node the DPO that got
3245  * us here hasn't - yet. no big deal. we'll drop while we wait.
3246  */
3247  if (IP_LOOKUP_NEXT_REWRITE == adj0->lookup_next_index)
3248  drop0 = 1;
3249 
3250  p0->error =
3251  node->errors[drop0 ? IP6_DISCOVER_NEIGHBOR_ERROR_DROP
3252  : IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT];
3253 
3254  if (drop0)
3255  continue;
3256 
3257  {
3258  u32 bi0 = 0;
3259  icmp6_neighbor_solicitation_header_t *h0;
3260  vlib_buffer_t *b0;
3261 
3262  h0 = vlib_packet_template_get_packet
3263  (vm, &im->discover_neighbor_packet_template, &bi0);
3264  if (!h0)
3265  continue;
3266 
3267  /*
3268  * Build ethernet header.
3269  * Choose source address based on destination lookup
3270  * adjacency.
3271  */
3272  if (!ip6_src_address_for_packet (lm,
3273  sw_if_index0,
3274  &ip0->dst_address,
3275  &h0->ip.src_address))
3276  {
3277  /* There is no address on the interface */
3278  p0->error =
3279  node->errors[IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS];
3280  vlib_buffer_free (vm, &bi0, 1);
3281  continue;
3282  }
3283 
3284  /*
3285  * Destination address is a solicited node multicast address.
3286  * We need to fill in
3287  * the low 24 bits with low 24 bits of target's address.
3288  */
3289  h0->ip.dst_address.as_u8[13] = ip0->dst_address.as_u8[13];
3290  h0->ip.dst_address.as_u8[14] = ip0->dst_address.as_u8[14];
3291  h0->ip.dst_address.as_u8[15] = ip0->dst_address.as_u8[15];
3292 
3293  h0->neighbor.target_address = ip0->dst_address;
3294 
3295  clib_memcpy (h0->link_layer_option.ethernet_address,
3296  hw_if0->hw_address, vec_len (hw_if0->hw_address));
3297 
3298  /* $$$$ appears we need this; why is the checksum non-zero? */
3299  h0->neighbor.icmp.checksum = 0;
3300  h0->neighbor.icmp.checksum =
3301  ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h0->ip,
3302  &bogus_length);
3303 
3304  ASSERT (bogus_length == 0);
3305 
3306  vlib_buffer_copy_trace_flag (vm, p0, bi0);
3307  b0 = vlib_get_buffer (vm, bi0);
3308  vnet_buffer (b0)->sw_if_index[VLIB_TX]
3309  = vnet_buffer (p0)->sw_if_index[VLIB_TX];
3310 
3311  vnet_buffer (b0)->ip.adj_index[VLIB_TX] =
3312  radv_info->mcast_adj_index;
3313 
3314  b0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
3315  next0 = IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX;
3316 
3317  vlib_set_next_frame_buffer (vm, node, next0, bi0);
3318  }
3319  }
3320 
3321  vlib_put_next_frame (vm, node, IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
3322  n_left_to_next_drop);
3323  }
3324 
3325  return frame->n_vectors;
3326 }
3327 
3328 static uword
3329 ip6_discover_neighbor (vlib_main_t * vm,
3330  vlib_node_runtime_t * node, vlib_frame_t * frame)
3331 {
3332  return (ip6_discover_neighbor_inline (vm, node, frame, 0));
3333 }
3334 
3335 static uword
3336 ip6_glean (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
3337 {
3338  return (ip6_discover_neighbor_inline (vm, node, frame, 1));
3339 }
3340 
3341 static char *ip6_discover_neighbor_error_strings[] = {
3342  [IP6_DISCOVER_NEIGHBOR_ERROR_DROP] = "address overflow drops",
3343  [IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT] = "neighbor solicitations sent",
3344  [IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS]
3345  = "no source address for ND solicitation",
3346 };
3347 
3348 /* *INDENT-OFF* */
3349 VLIB_REGISTER_NODE (ip6_glean_node) =
3350 {
3351  .function = ip6_glean,
3352  .name = "ip6-glean",
3353  .vector_size = sizeof (u32),
3354  .format_trace = format_ip6_forward_next_trace,
3355  .n_errors = ARRAY_LEN (ip6_discover_neighbor_error_strings),
3356  .error_strings = ip6_discover_neighbor_error_strings,
3357  .n_next_nodes = IP6_DISCOVER_NEIGHBOR_N_NEXT,
3358  .next_nodes =
3359  {
3360  [IP6_DISCOVER_NEIGHBOR_NEXT_DROP] = "ip6-drop",
3361  [IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX] = "ip6-rewrite-mcast",
3362  },
3363 };
3364 VLIB_REGISTER_NODE (ip6_discover_neighbor_node) =
3365 {
3366  .function = ip6_discover_neighbor,
3367  .name = "ip6-discover-neighbor",
3368  .vector_size = sizeof (u32),
3369  .format_trace = format_ip6_forward_next_trace,
3370  .n_errors = ARRAY_LEN (ip6_discover_neighbor_error_strings),
3371  .error_strings = ip6_discover_neighbor_error_strings,
3372  .n_next_nodes = IP6_DISCOVER_NEIGHBOR_N_NEXT,
3373  .next_nodes =
3374  {
3375  [IP6_DISCOVER_NEIGHBOR_NEXT_DROP] = "ip6-drop",
3376  [IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX] = "ip6-rewrite-mcast",
3377  },
3378 };
3379 /* *INDENT-ON* */
3380 
3381 /* API support functions */
3382 int
3383 ip6_neighbor_ra_config (vlib_main_t * vm, u32 sw_if_index,
3384  u8 suppress, u8 managed, u8 other,
3385  u8 ll_option, u8 send_unicast, u8 cease,
3386  u8 use_lifetime, u32 lifetime,
3387  u32 initial_count, u32 initial_interval,
3388  u32 max_interval, u32 min_interval, u8 is_no)
3389 {
3390  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3391  int error;
3392  u32 ri;
3393 
3394  /* look up the radv_t information for this interface */
3395  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
3396  ~0);
3397  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3398  error = (ri != ~0) ? 0 : VNET_API_ERROR_INVALID_SW_IF_INDEX;
3399 
3400  if (!error)
3401  {
3402 
3403  ip6_radv_t *radv_info;
3404  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3405 
3406  if ((max_interval != 0) && (min_interval == 0))
3407  min_interval = .75 * max_interval;
3408 
3409  max_interval =
3410  (max_interval !=
3411  0) ? ((is_no) ? DEF_MAX_RADV_INTERVAL : max_interval) :
3412  radv_info->max_radv_interval;
3413  min_interval =
3414  (min_interval !=
3415  0) ? ((is_no) ? DEF_MIN_RADV_INTERVAL : min_interval) :
3416  radv_info->min_radv_interval;
3417  lifetime =
3418  (use_lifetime !=
3419  0) ? ((is_no) ? DEF_DEF_RTR_LIFETIME : lifetime) :
3420  radv_info->adv_router_lifetime_in_sec;
3421 
3422  if (lifetime)
3423  {
3424  if (lifetime > MAX_DEF_RTR_LIFETIME)
3425  lifetime = MAX_DEF_RTR_LIFETIME;
3426 
3427  if (lifetime <= max_interval)
3428  return VNET_API_ERROR_INVALID_VALUE;
3429  }
3430 
3431  if (min_interval != 0)
3432  {
3433  if ((min_interval > .75 * max_interval) || (min_interval < 3))
3434  return VNET_API_ERROR_INVALID_VALUE;
3435  }
3436 
3437  if ((initial_count > MAX_INITIAL_RTR_ADVERTISEMENTS) ||
3438  (initial_interval > MAX_INITIAL_RTR_ADVERT_INTERVAL))
3439  return VNET_API_ERROR_INVALID_VALUE;
3440 
3441  /*
3442  if "flag" is set and is_no is true then restore default value else set value corresponding to "flag"
3443  if "flag" is clear don't change corresponding value
3444  */
3445  radv_info->send_radv =
3446  (suppress != 0) ? ((is_no != 0) ? 1 : 0) : radv_info->send_radv;
3447  radv_info->adv_managed_flag =
3448  (managed != 0) ? ((is_no) ? 0 : 1) : radv_info->adv_managed_flag;
3449  radv_info->adv_other_flag =
3450  (other != 0) ? ((is_no) ? 0 : 1) : radv_info->adv_other_flag;
3451  radv_info->adv_link_layer_address =
3452  (ll_option !=
3453  0) ? ((is_no) ? 1 : 0) : radv_info->adv_link_layer_address;
3454  radv_info->send_unicast =
3455  (send_unicast != 0) ? ((is_no) ? 0 : 1) : radv_info->send_unicast;
3456  radv_info->cease_radv =
3457  (cease != 0) ? ((is_no) ? 0 : 1) : radv_info->cease_radv;
3458 
3459  radv_info->min_radv_interval = min_interval;
3460  radv_info->max_radv_interval = max_interval;
3461  radv_info->adv_router_lifetime_in_sec = lifetime;
3462 
3463  radv_info->initial_adverts_count =
3464  (initial_count !=
3465  0) ? ((is_no) ? MAX_INITIAL_RTR_ADVERTISEMENTS : initial_count) :
3466  radv_info->initial_adverts_count;
3467  radv_info->initial_adverts_interval =
3468  (initial_interval !=
3469  0) ? ((is_no) ? MAX_INITIAL_RTR_ADVERT_INTERVAL : initial_interval) :
3470  radv_info->initial_adverts_interval;
3471 
3472  /* restart */
3473  if ((cease != 0) && (is_no))
3474  radv_info->send_radv = 1;
3475 
3476  radv_info->initial_adverts_sent = radv_info->initial_adverts_count - 1;
3477  radv_info->next_multicast_time = vlib_time_now (vm);
3478  radv_info->last_multicast_time = vlib_time_now (vm);
3479  radv_info->last_radv_time = 0;
3480  }
3481  return (error);
3482 }
3483 
3484 int
3485 ip6_neighbor_ra_prefix (vlib_main_t * vm, u32 sw_if_index,
3486  ip6_address_t * prefix_addr, u8 prefix_len,
3487  u8 use_default, u32 val_lifetime, u32 pref_lifetime,
3488  u8 no_advertise, u8 off_link, u8 no_autoconfig,
3489  u8 no_onlink, u8 is_no)
3490 {
3491  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3492  int error;
3493 
3494  u32 ri;
3495 
3496  /* look up the radv_t information for this interface */
3497  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
3498  ~0);
3499 
3500  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3501 
3502  error = (ri != ~0) ? 0 : VNET_API_ERROR_INVALID_SW_IF_INDEX;
3503 
3504  if (!error)
3505  {
3506  f64 now = vlib_time_now (vm);
3507  ip6_radv_t *radv_info;
3508  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3509 
3510  /* prefix info add, delete or update */
3511  ip6_radv_prefix_t *prefix;
3512 
3513  /* lookup prefix info for this address on this interface */
3514  uword *p = mhash_get (&radv_info->address_to_prefix_index, prefix_addr);
3515 
3516  prefix = p ? pool_elt_at_index (radv_info->adv_prefixes_pool, p[0]) : 0;
3517 
3518  if (is_no)
3519  {
3520  /* delete */
3521  if (!prefix)
3522  return VNET_API_ERROR_INVALID_VALUE; /* invalid prefix */
3523 
3524  if (prefix->prefix_len != prefix_len)
3525  return VNET_API_ERROR_INVALID_VALUE_2;
3526 
3527  /* FIXME - Should the DP do this or the CP ? */
3528  /* do specific delete processing here before returning */
3529  /* try to remove from routing table */
3530 
3531  mhash_unset (&radv_info->address_to_prefix_index, prefix_addr,
3532  /* old_value */ 0);
3533  pool_put (radv_info->adv_prefixes_pool, prefix);
3534 
3535  radv_info->initial_adverts_sent =
3536  radv_info->initial_adverts_count - 1;
3537  radv_info->next_multicast_time = vlib_time_now (vm);
3538  radv_info->last_multicast_time = vlib_time_now (vm);
3539  radv_info->last_radv_time = 0;
3540  return (error);
3541  }
3542 
3543  /* adding or changing */
3544  if (!prefix)
3545  {
3546  /* add */
3547  u32 pi;
3548  pool_get (radv_info->adv_prefixes_pool, prefix);
3549  pi = prefix - radv_info->adv_prefixes_pool;
3550  mhash_set (&radv_info->address_to_prefix_index, prefix_addr, pi,
3551  /* old_value */ 0);
3552 
3553  memset (prefix, 0x0, sizeof (ip6_radv_prefix_t));
3554 
3555  prefix->prefix_len = prefix_len;
3556  clib_memcpy (&prefix->prefix, prefix_addr, sizeof (ip6_address_t));
3557 
3558  /* initialize default values */
3559  prefix->adv_on_link_flag = 1; /* L bit set */
3560  prefix->adv_autonomous_flag = 1; /* A bit set */
3561  prefix->adv_valid_lifetime_in_secs = DEF_ADV_VALID_LIFETIME;
3562  prefix->adv_pref_lifetime_in_secs = DEF_ADV_PREF_LIFETIME;
3563  prefix->enabled = 1;
3564  prefix->decrement_lifetime_flag = 1;
3565  prefix->deprecated_prefix_flag = 1;
3566 
3567  if (off_link == 0)
3568  {
3569  /* FIXME - Should the DP do this or the CP ? */
3570  /* insert prefix into routing table as a connected prefix */
3571  }
3572 
3573  if (use_default)
3574  goto restart;
3575  }
3576  else
3577  {
3578 
3579  if (prefix->prefix_len != prefix_len)
3580  return VNET_API_ERROR_INVALID_VALUE_2;
3581 
3582  if (off_link != 0)
3583  {
3584  /* FIXME - Should the DP do this or the CP ? */
3585  /* remove from routing table if already there */
3586  }
3587  }
3588 
3589  if ((val_lifetime == ~0) || (pref_lifetime == ~0))
3590  {
3591  prefix->adv_valid_lifetime_in_secs = ~0;
3592  prefix->adv_pref_lifetime_in_secs = ~0;
3593  prefix->decrement_lifetime_flag = 0;
3594  }
3595  else
3596  {
3597  prefix->adv_valid_lifetime_in_secs = val_lifetime;;
3598  prefix->adv_pref_lifetime_in_secs = pref_lifetime;
3599  }
3600 
3601  /* copy remaining */
3602  prefix->enabled = !(no_advertise != 0);
3603  prefix->adv_on_link_flag = !((off_link != 0) || (no_onlink != 0));
3604  prefix->adv_autonomous_flag = !(no_autoconfig != 0);
3605 
3606  restart:
3607  /* restart */
3608  /* fill in the expiration times */
3609  prefix->valid_lifetime_expires =
3610  now + prefix->adv_valid_lifetime_in_secs;
3611  prefix->pref_lifetime_expires = now + prefix->adv_pref_lifetime_in_secs;
3612 
3613  radv_info->initial_adverts_sent = radv_info->initial_adverts_count - 1;
3614  radv_info->next_multicast_time = vlib_time_now (vm);
3615  radv_info->last_multicast_time = vlib_time_now (vm);
3616  radv_info->last_radv_time = 0;
3617  }
3618  return (error);
3619 }
3620 
3621 clib_error_t *
3622 ip6_neighbor_cmd (vlib_main_t * vm, unformat_input_t * main_input,
3623  vlib_cli_command_t * cmd)
3624 {
3625  vnet_main_t *vnm = vnet_get_main ();
3626  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3627  clib_error_t *error = 0;
3628  u8 is_no = 0;
3629  u8 suppress = 0, managed = 0, other = 0;
3630  u8 suppress_ll_option = 0, send_unicast = 0, cease = 0;
3631  u8 use_lifetime = 0;
3632  u32 sw_if_index, ra_lifetime = 0, ra_initial_count =
3633  0, ra_initial_interval = 0;
3634  u32 ra_max_interval = 0, ra_min_interval = 0;
3635 
3636  unformat_input_t _line_input, *line_input = &_line_input;
3637  vnet_sw_interface_t *sw_if0;
3638 
3639  int add_radv_info = 1;
3640  __attribute__ ((unused)) ip6_radv_t *radv_info = 0;
3641  ip6_address_t ip6_addr;
3642  u32 addr_len;
3643 
3644 
3645  /* Get a line of input. */
3646  if (!unformat_user (main_input, unformat_line_input, line_input))
3647  return 0;
3648 
3649  /* get basic radv info for this interface */
3650  if (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3651  {
3652 
3653  if (unformat_user (line_input,
3654  unformat_vnet_sw_interface, vnm, &sw_if_index))
3655  {
3656  u32 ri;
3657  ethernet_interface_t *eth_if0 = 0;
3658 
3659  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
3660  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
3661  eth_if0 =
3662  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
3663 
3664  if (!eth_if0)
3665  {
3666  error =
3667  clib_error_return (0, "Interface must be of ethernet type");
3668  goto done;
3669  }
3670 
3671  /* look up the radv_t information for this interface */
3672  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
3673  sw_if_index, ~0);
3674 
3675  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3676 
3677  if (ri != ~0)
3678  {
3679  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3680  }
3681  else
3682  {
3683  error = clib_error_return (0, "unknown interface %U'",
3684  format_unformat_error, line_input);
3685  goto done;
3686  }
3687  }
3688  else
3689  {
3690  error = clib_error_return (0, "invalid interface name %U'",
3691  format_unformat_error, line_input);
3692  goto done;
3693  }
3694  }
3695 
3696  /* get the rest of the command */
3697  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3698  {
3699  if (unformat (line_input, "no"))
3700  is_no = 1;
3701  else if (unformat (line_input, "prefix %U/%d",
3702  unformat_ip6_address, &ip6_addr, &addr_len))
3703  {
3704  add_radv_info = 0;
3705  break;
3706  }
3707  else if (unformat (line_input, "ra-managed-config-flag"))
3708  {
3709  managed = 1;
3710  break;
3711  }
3712  else if (unformat (line_input, "ra-other-config-flag"))
3713  {
3714  other = 1;
3715  break;
3716  }
3717  else if (unformat (line_input, "ra-suppress") ||
3718  unformat (line_input, "ra-surpress"))
3719  {
3720  suppress = 1;
3721  break;
3722  }
3723  else if (unformat (line_input, "ra-suppress-link-layer") ||
3724  unformat (line_input, "ra-surpress-link-layer"))
3725  {
3726  suppress_ll_option = 1;
3727  break;
3728  }
3729  else if (unformat (line_input, "ra-send-unicast"))
3730  {
3731  send_unicast = 1;
3732  break;
3733  }
3734  else if (unformat (line_input, "ra-lifetime"))
3735  {
3736  if (!unformat (line_input, "%d", &ra_lifetime))
3737  {
3738  error = unformat_parse_error (line_input);
3739  goto done;
3740  }
3741  use_lifetime = 1;
3742  break;
3743  }
3744  else if (unformat (line_input, "ra-initial"))
3745  {
3746  if (!unformat
3747  (line_input, "%d %d", &ra_initial_count, &ra_initial_interval))
3748  {
3749  error = unformat_parse_error (line_input);
3750  goto done;
3751  }
3752  break;
3753  }
3754  else if (unformat (line_input, "ra-interval"))
3755  {
3756  if (!unformat (line_input, "%d", &ra_max_interval))
3757  {
3758  error = unformat_parse_error (line_input);
3759  goto done;
3760  }
3761 
3762  if (!unformat (line_input, "%d", &ra_min_interval))
3763  ra_min_interval = 0;
3764  break;
3765  }
3766  else if (unformat (line_input, "ra-cease"))
3767  {
3768  cease = 1;
3769  break;
3770  }
3771  else
3772  {
3773  error = unformat_parse_error (line_input);
3774  goto done;
3775  }
3776  }
3777 
3778  if (add_radv_info)
3779  {
3780  ip6_neighbor_ra_config (vm, sw_if_index,
3781  suppress, managed, other,
3782  suppress_ll_option, send_unicast, cease,
3783  use_lifetime, ra_lifetime,
3784  ra_initial_count, ra_initial_interval,
3785  ra_max_interval, ra_min_interval, is_no);
3786  }
3787  else
3788  {
3789  u32 valid_lifetime_in_secs = 0;
3790  u32 pref_lifetime_in_secs = 0;
3791  u8 use_prefix_default_values = 0;
3792  u8 no_advertise = 0;
3793  u8 off_link = 0;
3794  u8 no_autoconfig = 0;
3795  u8 no_onlink = 0;
3796 
3797  /* get the rest of the command */
3798  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3799  {
3800  if (unformat (line_input, "default"))
3801  {
3802  use_prefix_default_values = 1;
3803  break;
3804  }
3805  else if (unformat (line_input, "infinite"))
3806  {
3807  valid_lifetime_in_secs = ~0;
3808  pref_lifetime_in_secs = ~0;
3809  break;
3810  }
3811  else if (unformat (line_input, "%d %d", &valid_lifetime_in_secs,
3812  &pref_lifetime_in_secs))
3813  break;
3814  else
3815  break;
3816  }
3817 
3818 
3819  /* get the rest of the command */
3820  while (!use_prefix_default_values &&
3821  unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3822  {
3823  if (unformat (line_input, "no-advertise"))
3824  no_advertise = 1;
3825  else if (unformat (line_input, "off-link"))
3826  off_link = 1;
3827  else if (unformat (line_input, "no-autoconfig"))
3828  no_autoconfig = 1;
3829  else if (unformat (line_input, "no-onlink"))
3830  no_onlink = 1;
3831  else
3832  {
3833  error = unformat_parse_error (line_input);
3834  goto done;
3835  }
3836  }
3837 
3838  ip6_neighbor_ra_prefix (vm, sw_if_index,
3839  &ip6_addr, addr_len,
3840  use_prefix_default_values,
3841  valid_lifetime_in_secs,
3842  pref_lifetime_in_secs,
3843  no_advertise,
3844  off_link, no_autoconfig, no_onlink, is_no);
3845  }
3846 
3847 done:
3848  unformat_free (line_input);
3849 
3850  return error;
3851 }
3852 
3853 static void
3854 ip6_print_addrs (vlib_main_t * vm, u32 * addrs)
3855 {
3856  ip_lookup_main_t *lm = &ip6_main.lookup_main;
3857  u32 i;
3858 
3859  for (i = 0; i < vec_len (addrs); i++)
3860  {
3861  ip_interface_address_t *a =
3862  pool_elt_at_index (lm->if_address_pool, addrs[i]);
3863  ip6_address_t *address = ip_interface_address_get_address (lm, a);
3864 
3865  vlib_cli_output (vm, "\t\t%U/%d",
3866  format_ip6_address, address, a->address_length);
3867  }
3868 }
3869 
3870 static clib_error_t *
3871 show_ip6_interface_cmd (vlib_main_t * vm,
3872  unformat_input_t * input, vlib_cli_command_t * cmd)
3873 {
3874  vnet_main_t *vnm = vnet_get_main ();
3875  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3876  clib_error_t *error = 0;
3877  u32 sw_if_index;
3878 
3879  sw_if_index = ~0;
3880 
3881  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
3882  {
3883  u32 ri;
3884 
3885  /* look up the radv_t information for this interface */
3886  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
3887  sw_if_index, ~0);
3888 
3889  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3890 
3891  if (ri != ~0)
3892  {
3893  ip_lookup_main_t *lm = &ip6_main.lookup_main;
3894  ip6_radv_t *radv_info;
3895  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3896 
3897  vlib_cli_output (vm, "%U is admin %s\n",
3898  format_vnet_sw_interface_name, vnm,
3899  vnet_get_sw_interface (vnm, sw_if_index),
3900  (vnet_sw_interface_is_admin_up (vnm, sw_if_index) ?
3901  "up" : "down"));
3902 
3903  u32 ai;
3904  u32 *link_scope = 0, *global_scope = 0;
3905  u32 *local_scope = 0, *unknown_scope = 0;
3906  ip_interface_address_t *a;
3907 
3908  vec_validate_init_empty (lm->if_address_pool_index_by_sw_if_index,
3909  sw_if_index, ~0);
3910  ai = lm->if_address_pool_index_by_sw_if_index[sw_if_index];
3911 
3912  while (ai != (u32) ~ 0)
3913  {
3914  a = pool_elt_at_index (lm->if_address_pool, ai);
3915  ip6_address_t *address =
3916  ip_interface_address_get_address (lm, a);
3917 
3918  if (ip6_address_is_link_local_unicast (address))
3919  vec_add1 (link_scope, ai);
3920  else if (ip6_address_is_global_unicast (address))
3921  vec_add1 (global_scope, ai);
3922  else if (ip6_address_is_local_unicast (address))
3923  vec_add1 (local_scope, ai);
3924  else
3925  vec_add1 (unknown_scope, ai);
3926 
3927  ai = a->next_this_sw_interface;
3928  }
3929 
3930  if (vec_len (link_scope))
3931  {
3932  vlib_cli_output (vm, "\tLink-local address(es):\n");
3933  ip6_print_addrs (vm, link_scope);
3934  vec_free (link_scope);
3935  }
3936 
3937  if (vec_len (local_scope))
3938  {
3939  vlib_cli_output (vm, "\tLocal unicast address(es):\n");
3940  ip6_print_addrs (vm, local_scope);
3941  vec_free (local_scope);
3942  }
3943 
3944  if (vec_len (global_scope))
3945  {
3946  vlib_cli_output (vm, "\tGlobal unicast address(es):\n");
3947  ip6_print_addrs (vm, global_scope);
3948  vec_free (global_scope);
3949  }
3950 
3951  if (vec_len (unknown_scope))
3952  {
3953  vlib_cli_output (vm, "\tOther-scope address(es):\n");
3954  ip6_print_addrs (vm, unknown_scope);
3955  vec_free (unknown_scope);
3956  }
3957 
3958  vlib_cli_output (vm, "\tLink-local address(es):\n");
3959  vlib_cli_output (vm, "\t\t%U\n", format_ip6_address,
3960  &radv_info->link_local_address);
3961 
3962  vlib_cli_output (vm, "\tJoined group address(es):\n");
3963  ip6_mldp_group_t *m;
3964  /* *INDENT-OFF* */
3965  pool_foreach (m, radv_info->mldp_group_pool,
3966  ({
3967  vlib_cli_output (vm, "\t\t%U\n", format_ip6_address,
3968  &m->mcast_address);
3969  }));
3970  /* *INDENT-ON* */
3971 
3972  vlib_cli_output (vm, "\tAdvertised Prefixes:\n");
3973  ip6_radv_prefix_t *p;
3974  /* *INDENT-OFF* */
3975  pool_foreach (p, radv_info->adv_prefixes_pool,
3976  ({
3977  vlib_cli_output (vm, "\t\tprefix %U, length %d\n",
3978  format_ip6_address, &p->prefix, p->prefix_len);
3979  }));
3980  /* *INDENT-ON* */
3981 
3982  vlib_cli_output (vm, "\tMTU is %d\n", radv_info->adv_link_mtu);
3983  vlib_cli_output (vm, "\tICMP error messages are unlimited\n");
3984  vlib_cli_output (vm, "\tICMP redirects are disabled\n");
3985  vlib_cli_output (vm, "\tICMP unreachables are not sent\n");
3986  vlib_cli_output (vm, "\tND DAD is disabled\n");
3987  //vlib_cli_output (vm, "\tND reachable time is %d milliseconds\n",);
3988  vlib_cli_output (vm, "\tND advertised reachable time is %d\n",
3989  radv_info->adv_neighbor_reachable_time_in_msec);
3990  vlib_cli_output (vm,
3991  "\tND advertised retransmit interval is %d (msec)\n",
3992  radv_info->
3993  adv_time_in_msec_between_retransmitted_neighbor_solicitations);
3994 
3995  u32 ra_interval = radv_info->max_radv_interval;
3996  u32 ra_interval_min = radv_info->min_radv_interval;
3997  vlib_cli_output (vm,
3998  "\tND router advertisements are sent every %d seconds (min interval is %d)\n",
3999  ra_interval, ra_interval_min);
4000  vlib_cli_output (vm,
4001  "\tND router advertisements live for %d seconds\n",
4002  radv_info->adv_router_lifetime_in_sec);
4003  vlib_cli_output (vm,
4004  "\tHosts %s stateless autoconfig for addresses\n",
4005  (radv_info->adv_managed_flag) ? "use" :
4006  " don't use");
4007  vlib_cli_output (vm, "\tND router advertisements sent %d\n",
4008  radv_info->n_advertisements_sent);
4009  vlib_cli_output (vm, "\tND router solicitations received %d\n",
4010  radv_info->n_solicitations_rcvd);
4011  vlib_cli_output (vm, "\tND router solicitations dropped %d\n",
4012  radv_info->n_solicitations_dropped);
4013  }
4014  else
4015  {
4016  error = clib_error_return (0, "IPv6 not enabled on interface",
4017  format_unformat_error, input);
4018 
4019  }
4020  }
4021  return error;
4022 }
4023 
4024 /*?
4025  * This command is used to display various IPv6 attributes on a given
4026  * interface.
4027  *
4028  * @cliexpar
4029  * Example of how to display IPv6 settings:
4030  * @cliexstart{show ip6 interface GigabitEthernet2/0/0}
4031  * GigabitEthernet2/0/0 is admin up
4032  * Link-local address(es):
4033  * fe80::ab8/64
4034  * Joined group address(es):
4035  * ff02::1
4036  * ff02::2
4037  * ff02::16
4038  * ff02::1:ff00:ab8
4039  * Advertised Prefixes:
4040  * prefix fe80::fe:28ff:fe9c:75b3, length 64
4041  * MTU is 1500
4042  * ICMP error messages are unlimited
4043  * ICMP redirects are disabled
4044  * ICMP unreachables are not sent
4045  * ND DAD is disabled
4046  * ND advertised reachable time is 0
4047  * ND advertised retransmit interval is 0 (msec)
4048  * ND router advertisements are sent every 200 seconds (min interval is 150)
4049  * ND router advertisements live for 600 seconds
4050  * Hosts use stateless autoconfig for addresses
4051  * ND router advertisements sent 19336
4052  * ND router solicitations received 0
4053  * ND router solicitations dropped 0
4054  * @cliexend
4055  * Example of output if IPv6 is not enabled on the interface:
4056  * @cliexstart{show ip6 interface GigabitEthernet2/0/0}
4057  * show ip6 interface: IPv6 not enabled on interface
4058  * @cliexend
4059 ?*/
4060 /* *INDENT-OFF* */
4061 VLIB_CLI_COMMAND (show_ip6_interface_command, static) =
4062 {
4063  .path = "show ip6 interface",
4064  .function = show_ip6_interface_cmd,
4065  .short_help = "show ip6 interface <interface>",
4066 };
4067 /* *INDENT-ON* */
4068 
4069 clib_error_t *
4070 disable_ip6_interface (vlib_main_t * vm, u32 sw_if_index)
4071 {
4072  clib_error_t *error = 0;
4073  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4074  u32 ri;
4075 
4076  /* look up the radv_t information for this interface */
4077  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
4078  ~0);
4079  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4080 
4081  /* if not created - do nothing */
4082  if (ri != ~0)
4083  {
4084  ip6_radv_t *radv_info;
4085 
4086  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4087 
4088  /* check radv_info ref count for other ip6 addresses on this interface */
4089  /* This implicitly excludes the link local address */
4090  if (radv_info->ref_count == 0)
4091  {
4092  /* essentially "disables" ipv6 on this interface */
4093  ip6_ll_prefix_t ilp = {
4094  .ilp_addr = radv_info->link_local_address,
4095  .ilp_sw_if_index = sw_if_index,
4096  };
4097  ip6_ll_table_entry_delete (&ilp);
4098  ip6_sw_interface_enable_disable (sw_if_index, 0);
4099  ip6_mfib_interface_enable_disable (sw_if_index, 0);
4100  ip6_neighbor_sw_interface_add_del (vnet_get_main (), sw_if_index,
4101  0);
4102  }
4103  }
4104  return error;
4105 }
4106 
4107 int
4108 ip6_interface_enabled (vlib_main_t * vm, u32 sw_if_index)
4109 {
4110  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4111  u32 ri = ~0;
4112 
4113  /* look up the radv_t information for this interface */
4114  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
4115  ~0);
4116 
4117  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4118 
4119  return ri != ~0;
4120 }
4121 
4122 clib_error_t *
4123 enable_ip6_interface (vlib_main_t * vm, u32 sw_if_index)
4124 {
4125  clib_error_t *error = 0;
4126  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4127  u32 ri;
4128  int is_add = 1;
4129 
4130  /* look up the radv_t information for this interface */
4131  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
4132  ~0);
4133 
4134  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4135 
4136  /* if not created yet */
4137  if (ri == ~0)
4138  {
4139  vnet_main_t *vnm = vnet_get_main ();
4140  vnet_sw_interface_t *sw_if0;
4141 
4142  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
4143  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
4144  {
4145  ethernet_interface_t *eth_if0;
4146 
4147  eth_if0 =
4148  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
4149  if (eth_if0)
4150  {
4151  /* create radv_info. for this interface. This holds all the info needed for router adverts */
4152  ri =
4153  ip6_neighbor_sw_interface_add_del (vnm, sw_if_index, is_add);
4154 
4155  if (ri != ~0)
4156  {
4157  ip6_radv_t *radv_info;
4158  ip6_address_t link_local_address;
4159 
4160  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4161 
4162  ip6_link_local_address_from_ethernet_mac_address
4163  (&link_local_address, eth_if0->address);
4164 
4165  sw_if0 = vnet_get_sw_interface (vnm, sw_if_index);
4166  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_SUB ||
4167  sw_if0->type == VNET_SW_INTERFACE_TYPE_PIPE ||
4168  sw_if0->type == VNET_SW_INTERFACE_TYPE_P2P)
4169  {
4170  /* make up an interface id */
4171  link_local_address.as_u64[1] =
4172  random_u64 (&radv_info->randomizer);
4173 
4174  link_local_address.as_u64[0] =
4175  clib_host_to_net_u64 (0xFE80000000000000ULL);
4176  /* clear u bit */
4177  link_local_address.as_u8[8] &= 0xfd;
4178  }
4179  {
4180  ip6_ll_prefix_t ilp = {
4181  .ilp_addr = link_local_address,
4182  .ilp_sw_if_index = sw_if_index,
4183  };
4184 
4185  ip6_ll_table_entry_update (&ilp, FIB_ROUTE_PATH_LOCAL);
4186  }
4187 
4188  /* essentially "enables" ipv6 on this interface */
4189  ip6_mfib_interface_enable_disable (sw_if_index, 1);
4190  ip6_sw_interface_enable_disable (sw_if_index, 1);
4191 
4192  if (!error)
4193  {
4194  radv_info->link_local_address = link_local_address;
4195  }
4196  }
4197  }
4198  }
4199  }
4200  return error;
4201 }
4202 
4203 int
4204 ip6_get_ll_address (u32 sw_if_index, ip6_address_t * addr)
4205 {
4206  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4207  ip6_radv_t *radv_info;
4208  u32 ri;
4209 
4210  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) <= sw_if_index)
4211  return 0;
4212 
4213  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4214 
4215  if (ri == ~0)
4216  return 0;
4217 
4218  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4219  *addr = radv_info->link_local_address;
4220 
4221  return (!0);
4222 }
4223 
4224 static clib_error_t *
4225 enable_ip6_interface_cmd (vlib_main_t * vm,
4226  unformat_input_t * input, vlib_cli_command_t * cmd)
4227 {
4228  vnet_main_t *vnm = vnet_get_main ();
4229  clib_error_t *error = 0;
4230  u32 sw_if_index;
4231 
4232  sw_if_index = ~0;
4233 
4234  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4235  {
4236  enable_ip6_interface (vm, sw_if_index);
4237  }
4238  else
4239  {
4240  error = clib_error_return (0, "unknown interface\n'",
4241  format_unformat_error, input);
4242 
4243  }
4244  return error;
4245 }
4246 
4247 /*?
4248  * This command is used to enable IPv6 on a given interface.
4249  *
4250  * @cliexpar
4251  * Example of how enable IPv6 on a given interface:
4252  * @cliexcmd{enable ip6 interface GigabitEthernet2/0/0}
4253 ?*/
4254 /* *INDENT-OFF* */
4255 VLIB_CLI_COMMAND (enable_ip6_interface_command, static) =
4256 {
4257  .path = "enable ip6 interface",
4258  .function = enable_ip6_interface_cmd,
4259  .short_help = "enable ip6 interface <interface>",
4260 };
4261 /* *INDENT-ON* */
4262 
4263 static clib_error_t *
4264 disable_ip6_interface_cmd (vlib_main_t * vm,
4265  unformat_input_t * input, vlib_cli_command_t * cmd)
4266 {
4267  vnet_main_t *vnm = vnet_get_main ();
4268  clib_error_t *error = 0;
4269  u32 sw_if_index;
4270 
4271  sw_if_index = ~0;
4272 
4273  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4274  {
4275  error = disable_ip6_interface (vm, sw_if_index);
4276  }
4277  else
4278  {
4279  error = clib_error_return (0, "unknown interface\n'",
4280  format_unformat_error, input);
4281 
4282  }
4283  return error;
4284 }
4285 
4286 /*?
4287  * This command is used to disable IPv6 on a given interface.
4288  *
4289  * @cliexpar
4290  * Example of how disable IPv6 on a given interface:
4291  * @cliexcmd{disable ip6 interface GigabitEthernet2/0/0}
4292 ?*/
4293 /* *INDENT-OFF* */
4294 VLIB_CLI_COMMAND (disable_ip6_interface_command, static) =
4295 {
4296  .path = "disable ip6 interface",
4297  .function = disable_ip6_interface_cmd,
4298  .short_help = "disable ip6 interface <interface>",
4299 };
4300 /* *INDENT-ON* */
4301 
4302 /*?
4303  * This command is used to configure the neighbor discovery
4304  * parameters on a given interface. Use the '<em>show ip6 interface</em>'
4305  * command to display some of the current neighbor discovery parameters
4306  * on a given interface. This command has three formats:
4307  *
4308  *
4309  * <b>Format 1 - Router Advertisement Options:</b> (Only one can be entered in a single command)
4310  *
4311  * '<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>'
4312  *
4313  * Where:
4314  *
4315  * <em>[no] ra-managed-config-flag</em> - Advertises in ICMPv6
4316  * router-advertisement messages to use stateful address
4317  * auto-configuration to obtain address information (sets the M-bit).
4318  * Default is the M-bit is not set and the '<em>no</em>' option
4319  * returns it to this default state.
4320  *
4321  * <em>[no] ra-other-config-flag</em> - Indicates in ICMPv6
4322  * router-advertisement messages that hosts use stateful auto
4323  * configuration to obtain nonaddress related information (sets
4324  * the O-bit). Default is the O-bit is not set and the '<em>no</em>'
4325  * option returns it to this default state.
4326  *
4327  * <em>[no] ra-suppress</em> - Disables sending ICMPv6 router-advertisement
4328  * messages. The '<em>no</em>' option implies to enable sending ICMPv6
4329  * router-advertisement messages.
4330  *
4331  * <em>[no] ra-suppress-link-layer</em> - Indicates not to include the
4332  * optional source link-layer address in the ICMPv6 router-advertisement
4333  * messages. Default is to include the optional source link-layer address
4334  * and the '<em>no</em>' option returns it to this default state.
4335  *
4336  * <em>[no] ra-send-unicast</em> - Use the source address of the
4337  * router-solicitation message if availiable. The default is to use
4338  * multicast address of all nodes, and the '<em>no</em>' option returns
4339  * it to this default state.
4340  *
4341  * <em>[no] ra-lifetime <lifetime></em> - Advertises the lifetime of a
4342  * default router in ICMPv6 router-advertisement messages. The range is
4343  * from 0 to 9000 seconds. '<em><lifetime></em>' must be greater than
4344  * '<em><max-interval></em>'. The default value is 600 seconds and the
4345  * '<em>no</em>' option returns it to this default value.
4346  *
4347  * <em>[no] ra-initial <cnt> <interval></em> - Number of initial ICMPv6
4348  * router-advertisement messages sent and the interval between each
4349  * message. Range for count is 1 - 3 and default is 3. Range for interval
4350  * is 1 to 16 seconds, and default is 16 seconds. The '<em>no</em>' option
4351  * returns both to their default value.
4352  *
4353  * <em>[no] ra-interval <max-interval> [<min-interval>]</em> - Configures the
4354  * interval between sending ICMPv6 router-advertisement messages. The
4355  * range for max-interval is from 4 to 200 seconds. min-interval can not
4356  * be more than 75% of max-interval. If not set, min-interval will be
4357  * set to 75% of max-interval. The range for min-interval is from 3 to
4358  * 150 seconds. The '<em>no</em>' option returns both to their default
4359  * value.
4360  *
4361  * <em>[no] ra-cease</em> - Cease sending ICMPv6 router-advertisement messages.
4362  * The '<em>no</em>' options implies to start (or restart) sending
4363  * ICMPv6 router-advertisement messages.
4364  *
4365  *
4366  * <b>Format 2 - Prefix Options:</b>
4367  *
4368  * '<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>'
4369  *
4370  * Where:
4371  *
4372  * <em>no</em> - All additional flags are ignored and the prefix is deleted.
4373  *
4374  * <em><valid-lifetime> <pref-lifetime></em> - '<em><valid-lifetime></em>' is the
4375  * length of time in seconds during what the prefix is valid for the purpose of
4376  * on-link determination. Range is 7203 to 2592000 seconds and default is 2592000
4377  * seconds (30 days). '<em><pref-lifetime></em>' is the prefered-lifetime and is the
4378  * length of time in seconds during what addresses generated from the prefix remain
4379  * preferred. Range is 0 to 604800 seconds and default is 604800 seconds (7 days).
4380  *
4381  * <em>infinite</em> - Both '<em><valid-lifetime></em>' and '<em><<pref-lifetime></em>'
4382  * are inifinte, no timeout.
4383  *
4384  * <em>no-advertise</em> - Do not send full router address in prefix
4385  * advertisement. Default is to advertise (i.e. - This flag is off by default).
4386  *
4387  * <em>off-link</em> - Prefix is off-link, clear L-bit in packet. Default is on-link
4388  * (i.e. - This flag is off and L-bit in packet is set by default and this prefix can
4389  * be used for on-link determination). '<em>no-onlink</em>' also controls the L-bit.
4390  *
4391  * <em>no-autoconfig</em> - Do not use prefix for autoconfiguration, clear A-bit in packet.
4392  * Default is autoconfig (i.e. - This flag is off and A-bit in packet is set by default.
4393  *
4394  * <em>no-onlink</em> - Do not use prefix for onlink determination, clear L-bit in packet.
4395  * Default is on-link (i.e. - This flag is off and L-bit in packet is set by default and
4396  * this prefix can be used for on-link determination). '<em>off-link</em>' also controls
4397  * the L-bit.
4398  *
4399  *
4400  * <b>Format 3: - Default of Prefix:</b>
4401  *
4402  * '<em><b>ip6 nd <interface> [no] prefix <ip6-address>/<width> default</b></em>'
4403  *
4404  * When a new prefix is added (or existing one is being overwritten) <em>default</em>
4405  * uses default values for the prefix. If <em>no</em> is used, the <em>default</em>
4406  * is ignored and the prefix is deleted.
4407  *
4408  *
4409  * @cliexpar
4410  * Example of how set a router advertisement option:
4411  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 ra-interval 100 20}
4412  * Example of how to add a prefix:
4413  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 prefix fe80::fe:28ff:fe9c:75b3/64 infinite no-advertise}
4414  * Example of how to delete a prefix:
4415  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 no prefix fe80::fe:28ff:fe9c:75b3/64}
4416 ?*/
4417 /* *INDENT-OFF* */
4418 VLIB_CLI_COMMAND (ip6_nd_command, static) =
4419 {
4420  .path = "ip6 nd",
4421  .short_help = "ip6 nd <interface> ...",
4422  .function = ip6_neighbor_cmd,
4423 };
4424 /* *INDENT-ON* */
4425 
4426 clib_error_t *
4427 set_ip6_link_local_address (vlib_main_t * vm,
4428  u32 sw_if_index, ip6_address_t * address)
4429 {
4430  clib_error_t *error = 0;
4431  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4432  u32 ri;
4433  ip6_radv_t *radv_info;
4434  vnet_main_t *vnm = vnet_get_main ();
4435 
4436  if (!ip6_address_is_link_local_unicast (address))
4437  {
4438  vnm->api_errno = VNET_API_ERROR_ADDRESS_NOT_LINK_LOCAL;
4439  return (error = clib_error_return (0, "address not link-local",
4440  format_unformat_error));
4441  }
4442 
4443  /* call enable ipv6 */
4444  enable_ip6_interface (vm, sw_if_index);
4445 
4446  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4447 
4448  if (ri != ~0)
4449  {
4450  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4451 
4452  /* save if link local address (overwrite default) */
4453 
4454  /* delete the old one */
4455  error = ip6_add_del_interface_address (vm, sw_if_index,
4456  &radv_info->link_local_address,
4457  128, 1 /* is_del */ );
4458 
4459  if (!error)
4460  {
4461  /* add the new one */
4462  error = ip6_add_del_interface_address (vm, sw_if_index,
4463  address, 128,
4464  0 /* is_del */ );
4465 
4466  if (!error)
4467  {
4468  radv_info->link_local_address = *address;
4469  }
4470  }
4471  }
4472  else
4473  {
4474  vnm->api_errno = VNET_API_ERROR_IP6_NOT_ENABLED;
4475  error = clib_error_return (0, "ip6 not enabled for interface",
4476  format_unformat_error);
4477  }
4478  return error;
4479 }
4480 
4481 clib_error_t *
4482 set_ip6_link_local_address_cmd (vlib_main_t * vm,
4483  unformat_input_t * input,
4484  vlib_cli_command_t * cmd)
4485 {
4486  vnet_main_t *vnm = vnet_get_main ();
4487  clib_error_t *error = 0;
4488  u32 sw_if_index;
4489  ip6_address_t ip6_addr;
4490 
4491  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4492  {
4493  /* get the rest of the command */
4494  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
4495  {
4496  if (unformat (input, "%U", unformat_ip6_address, &ip6_addr))
4497  break;
4498  else
4499  return (unformat_parse_error (input));
4500  }
4501  }
4502  error = set_ip6_link_local_address (vm, sw_if_index, &ip6_addr);
4503  return error;
4504 }
4505 
4506 /*?
4507  * This command is used to assign an IPv6 Link-local address to an
4508  * interface. This command will enable IPv6 on an interface if it
4509  * is not already enabled. Use the '<em>show ip6 interface</em>' command
4510  * to display the assigned Link-local address.
4511  *
4512  * @cliexpar
4513  * Example of how to assign an IPv6 Link-local address to an interface:
4514  * @cliexcmd{set ip6 link-local address GigabitEthernet2/0/0 FE80::AB8}
4515 ?*/
4516 /* *INDENT-OFF* */
4517 VLIB_CLI_COMMAND (set_ip6_link_local_address_command, static) =
4518 {
4519  .path = "set ip6 link-local address",
4520  .short_help = "set ip6 link-local address <interface> <ip6-address>",
4521  .function = set_ip6_link_local_address_cmd,
4522 };
4523 /* *INDENT-ON* */
4524 
4525 /**
4526  * @brief callback when an interface address is added or deleted
4527  */
4528 static void
4529 ip6_neighbor_add_del_interface_address (ip6_main_t * im,
4530  uword opaque,
4531  u32 sw_if_index,
4532  ip6_address_t * address,
4533  u32 address_length,
4534  u32 if_address_index, u32 is_delete)
4535 {
4536  vnet_main_t *vnm = vnet_get_main ();
4537  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4538  u32 ri;
4539  vlib_main_t *vm = vnm->vlib_main;
4540  ip6_radv_t *radv_info;
4541  ip6_address_t a;
4542 
4543  /* create solicited node multicast address for this interface adddress */
4544  ip6_set_solicited_node_multicast_address (&a, 0);
4545 
4546  a.as_u8[0xd] = address->as_u8[0xd];
4547  a.as_u8[0xe] = address->as_u8[0xe];
4548  a.as_u8[0xf] = address->as_u8[0xf];
4549 
4550  if (!is_delete)
4551  {
4552  /* try to create radv_info - does nothing if ipv6 already enabled */
4553  enable_ip6_interface (vm, sw_if_index);
4554 
4555  /* look up the radv_t information for this interface */
4556  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
4557  sw_if_index, ~0);
4558  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4559  if (ri != ~0)
4560  {
4561  /* get radv_info */
4562  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4563 
4564  /* add address */
4565  if (!ip6_address_is_link_local_unicast (address))
4566  radv_info->ref_count++;
4567 
4568  ip6_neighbor_add_mld_prefix (radv_info, &a);
4569  }
4570  }
4571  else
4572  {
4573 
4574  /* delete */
4575  /* look up the radv_t information for this interface */
4576  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
4577  sw_if_index, ~0);
4578  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4579 
4580  if (ri != ~0)
4581  {
4582  /* get radv_info */
4583  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4584 
4585  ip6_neighbor_del_mld_prefix (radv_info, &a);
4586 
4587  /* if interface up send MLDP "report" */
4588  radv_info->all_routers_mcast = 0;
4589 
4590  /* add address */
4591  if (!ip6_address_is_link_local_unicast (address))
4592  radv_info->ref_count--;
4593  }
4594  /* Ensure that IPv6 is disabled, and LL removed after ref_count reaches 0 */
4595  disable_ip6_interface (vm, sw_if_index);
4596  }
4597 }
4598 
4599 clib_error_t *
4600 ip6_set_neighbor_limit (u32 neighbor_limit)
4601 {
4602  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4603 
4604  nm->limit_neighbor_cache_size = neighbor_limit;
4605  return 0;
4606 }
4607 
4608 static void
4609 ip6_neighbor_table_bind (ip6_main_t * im,
4610  uword opaque,
4611  u32 sw_if_index,
4612  u32 new_fib_index, u32 old_fib_index)
4613 {
4614  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4615  ip6_neighbor_t *n = NULL;
4616  u32 i, *to_re_add = 0;
4617 
4618  /* *INDENT-OFF* */
4619  pool_foreach (n, nm->neighbor_pool,
4620  ({
4621  if (n->key.sw_if_index == sw_if_index)
4622  vec_add1 (to_re_add, n - nm->neighbor_pool);
4623  }));
4624  /* *INDENT-ON* */
4625 
4626  for (i = 0; i < vec_len (to_re_add); i++)
4627  {
4628  n = pool_elt_at_index (nm->neighbor_pool, to_re_add[i]);
4629  ip6_neighbor_adj_fib_remove (n, old_fib_index);
4630  ip6_neighbor_adj_fib_add (n, new_fib_index);
4631  }
4632  vec_free (to_re_add);
4633 }
4634 
4635 static clib_error_t *
4636 ip6_neighbor_init (vlib_main_t * vm)
4637 {
4638  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4639  ip6_main_t *im = &ip6_main;
4640 
4641  mhash_init (&nm->neighbor_index_by_key,
4642  /* value size */ sizeof (uword),
4643  /* key size */ sizeof (ip6_neighbor_key_t));
4644 
4645  icmp6_register_type (vm, ICMP6_neighbor_solicitation,
4646  ip6_icmp_neighbor_solicitation_node.index);
4647  icmp6_register_type (vm, ICMP6_neighbor_advertisement,
4648  ip6_icmp_neighbor_advertisement_node.index);
4649  icmp6_register_type (vm, ICMP6_router_solicitation,
4650  ip6_icmp_router_solicitation_node.index);
4651  icmp6_register_type (vm, ICMP6_router_advertisement,
4652  ip6_icmp_router_advertisement_node.index);
4653 
4654  /* handler node for ip6 neighbor discovery events and timers */
4655  vlib_register_node (vm, &ip6_icmp_neighbor_discovery_event_node);
4656 
4657  /* add call backs */
4658  ip6_add_del_interface_address_callback_t cb;
4659  memset (&cb, 0x0, sizeof (ip6_add_del_interface_address_callback_t));
4660 
4661  /* when an interface address changes... */
4662  cb.function = ip6_neighbor_add_del_interface_address;
4663  cb.function_opaque = 0;
4664  vec_add1 (im->add_del_interface_address_callbacks, cb);
4665 
4666  ip6_table_bind_callback_t cbt;
4667  cbt.function = ip6_neighbor_table_bind;
4668  cbt.function_opaque = 0;
4669  vec_add1 (im->table_bind_callbacks, cbt);
4670 
4671  mhash_init (&nm->pending_resolutions_by_address,
4672  /* value size */ sizeof (uword),
4673  /* key size */ sizeof (ip6_address_t));
4674 
4675  mhash_init (&nm->mac_changes_by_address,
4676  /* value size */ sizeof (uword),
4677  /* key size */ sizeof (ip6_address_t));
4678 
4679  /* default, configurable */
4680  nm->limit_neighbor_cache_size = 50000;
4681 
4682  nm->wc_ip6_nd_publisher_node = (uword) ~ 0;
4683 
4684  nm->ip6_ra_publisher_node = (uword) ~ 0;
4685 
4686 #if 0
4687  /* $$$$ Hack fix for today */
4688  vec_validate_init_empty
4689  (im->discover_neighbor_next_index_by_hw_if_index, 32, 0 /* drop */ );
4690 #endif
4691 
4692  return 0;
4693 }
4694 
4695 VLIB_INIT_FUNCTION (ip6_neighbor_init);
4696 
4697 
4698 void
4699 vnet_register_ip6_neighbor_resolution_event (vnet_main_t * vnm,
4700  void *address_arg,
4701  uword node_index,
4702  uword type_opaque, uword data)
4703 {
4704  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4705  ip6_address_t *address = address_arg;
4706  uword *p;
4707  pending_resolution_t *pr;
4708 
4709  pool_get (nm->pending_resolutions, pr);
4710 
4711  pr->next_index = ~0;
4712  pr->node_index = node_index;
4713  pr->type_opaque = type_opaque;
4714  pr->data = data;
4715 
4716  p = mhash_get (&nm->pending_resolutions_by_address, address);
4717  if (p)
4718  {
4719  /* Insert new resolution at the head of the list */
4720  pr->next_index = p[0];
4721  mhash_unset (&nm->pending_resolutions_by_address, address, 0);
4722  }
4723 
4724  mhash_set (&nm->pending_resolutions_by_address, address,
4725  pr - nm->pending_resolutions, 0 /* old value */ );
4726 }
4727 
4728 int
4729 vnet_add_del_ip6_nd_change_event (vnet_main_t * vnm,
4730  void *data_callback,
4731  u32 pid,
4732  void *address_arg,
4733  uword node_index,
4734  uword type_opaque, uword data, int is_add)
4735 {
4736  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4737  ip6_address_t *address = address_arg;
4738 
4739  /* Try to find an existing entry */
4740  u32 *first = (u32 *) mhash_get (&nm->mac_changes_by_address, address);
4741  u32 *p = first;
4742  pending_resolution_t *mc;
4743  while (p && *p != ~0)
4744  {
4745  mc = pool_elt_at_index (nm->mac_changes, *p);
4746  if (mc->node_index == node_index && mc->type_opaque == type_opaque
4747  && mc->pid == pid)
4748  break;
4749  p = &mc->next_index;
4750  }
4751 
4752  int found = p && *p != ~0;
4753  if (is_add)
4754  {
4755  if (found)
4756  return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
4757 
4758  pool_get (nm->mac_changes, mc);
4759  /* *INDENT-OFF* */
4760  *mc = (pending_resolution_t)
4761  {
4762  .next_index = ~0,
4763  .node_index = node_index,
4764  .type_opaque = type_opaque,
4765  .data = data,
4766  .data_callback = data_callback,
4767  .pid = pid,
4768  };
4769  /* *INDENT-ON* */
4770 
4771  /* Insert new resolution at the end of the list */
4772  u32 new_idx = mc - nm->mac_changes;
4773  if (p)
4774  p[0] = new_idx;
4775  else
4776  mhash_set (&nm->mac_changes_by_address, address, new_idx, 0);
4777  }
4778  else
4779  {
4780  if (!found)
4781  return VNET_API_ERROR_NO_SUCH_ENTRY;
4782 
4783  /* Clients may need to clean up pool entries, too */
4784  void (*fp) (u32, u8 *) = data_callback;
4785  if (fp)
4786  (*fp) (mc->data, 0 /* no new mac addrs */ );
4787 
4788  /* Remove the entry from the list and delete the entry */
4789  *p = mc->next_index;
4790  pool_put (nm->mac_changes, mc);
4791 
4792  /* Remove from hash if we deleted the last entry */
4793  if (*p == ~0 && p == first)
4794  mhash_unset (&nm->mac_changes_by_address, address, 0);
4795  }
4796  return 0;
4797 }
4798 
4799 int
4800 vnet_ip6_nd_term (vlib_main_t * vm,
4801  vlib_node_runtime_t * node,
4802  vlib_buffer_t * p0,
4803  ethernet_header_t * eth,
4804  ip6_header_t * ip, u32 sw_if_index, u16 bd_index)
4805 {
4806  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4807  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
4808 
4809  ndh = ip6_next_header (ip);
4810  if (ndh->icmp.type != ICMP6_neighbor_solicitation &&
4811  ndh->icmp.type != ICMP6_neighbor_advertisement)
4812  return 0;
4813 
4814  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
4815  (p0->flags & VLIB_BUFFER_IS_TRACED)))
4816  {
4817  u8 *t0 = vlib_add_trace (vm, node, p0,
4818  sizeof (icmp6_input_trace_t));
4819  clib_memcpy (t0, ip, sizeof (icmp6_input_trace_t));
4820  }
4821 
4822  /* Check if anyone want ND events for L2 BDs */
4823  if (PREDICT_FALSE
4824  (nm->wc_ip6_nd_publisher_node != (uword) ~ 0
4825  && !ip6_address_is_link_local_unicast (&ip->src_address)))
4826  {
4827  vnet_nd_wc_publish (sw_if_index, eth->src_address, &ip->src_address);
4828  }
4829 
4830  /* Check if MAC entry exsist for solicited target IP */
4831  if (ndh->icmp.type == ICMP6_neighbor_solicitation)
4832  {
4833  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
4834  l2_bridge_domain_t *bd_config;
4835  u8 *macp;
4836 
4837  opt = (void *) (ndh + 1);
4838  if ((opt->header.type !=
4839  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address) ||
4840  (opt->header.n_data_u64s != 1))
4841  return 0; /* source link layer address option not present */
4842 
4843  bd_config = vec_elt_at_index (l2input_main.bd_configs, bd_index);
4844  macp =
4845  (u8 *) hash_get_mem (bd_config->mac_by_ip6, &ndh->target_address);
4846  if (macp)
4847  { /* found ip-mac entry, generate eighbor advertisement response */
4848  int bogus_length;
4849  vlib_node_runtime_t *error_node =
4850  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
4851  ip->dst_address = ip->src_address;
4852  ip->src_address = ndh->target_address;
4853  ip->hop_limit = 255;
4854  opt->header.type =
4855  ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
4856  clib_memcpy (opt->ethernet_address, macp, 6);
4857  ndh->icmp.type = ICMP6_neighbor_advertisement;
4858  ndh->advertisement_flags = clib_host_to_net_u32
4859  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
4860  ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
4861  ndh->icmp.checksum = 0;
4862  ndh->icmp.checksum =
4863  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip, &bogus_length);
4864  clib_memcpy (eth->dst_address, eth->src_address, 6);
4865  clib_memcpy (eth->src_address, macp, 6);
4866  vlib_error_count (vm, error_node->node_index,
4867  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_TX, 1);
4868  return 1;
4869  }
4870  }
4871 
4872  return 0;
4873 
4874 }
4875 
4876 int
4877 ip6_neighbor_proxy_add_del (u32 sw_if_index, ip6_address_t * addr, u8 is_del)
4878 {
4879  u32 fib_index;
4880 
4881  fib_prefix_t pfx = {
4882  .fp_len = 128,
4883  .fp_proto = FIB_PROTOCOL_IP6,
4884  .fp_addr = {
4885  .ip6 = *addr,
4886  },
4887  };
4888  ip46_address_t nh = {
4889  .ip6 = *addr,
4890  };
4891 
4892  fib_index = ip6_fib_table_get_index_for_sw_if_index (sw_if_index);
4893 
4894  if (~0 == fib_index)
4895  return VNET_API_ERROR_NO_SUCH_FIB;
4896 
4897  if (is_del)
4898  {
4899  fib_table_entry_path_remove (fib_index,
4900  &pfx,
4901  FIB_SOURCE_IP6_ND_PROXY,
4902  DPO_PROTO_IP6,
4903  &nh,
4904  sw_if_index,
4905  ~0, 1, FIB_ROUTE_PATH_FLAG_NONE);
4906  /* flush the ND cache of this address if it's there */
4907  vnet_unset_ip6_ethernet_neighbor (vlib_get_main (), sw_if_index, addr);
4908  }
4909  else
4910  {
4911  fib_table_entry_path_add (fib_index,
4912  &pfx,
4913  FIB_SOURCE_IP6_ND_PROXY,
4914  FIB_ENTRY_FLAG_NONE,
4915  DPO_PROTO_IP6,
4916  &nh,
4917  sw_if_index,
4918  ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
4919  }
4920  return (0);
4921 }
4922 
4923 static clib_error_t *
4924 set_ip6_nd_proxy_cmd (vlib_main_t * vm,
4925  unformat_input_t * input, vlib_cli_command_t * cmd)
4926 {
4927  vnet_main_t *vnm = vnet_get_main ();
4928  clib_error_t *error = 0;
4929  ip6_address_t addr;
4930  u32 sw_if_index;
4931  u8 is_del = 0;
4932 
4933  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4934  {
4935  /* get the rest of the command */
4936  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
4937  {
4938  if (unformat (input, "%U", unformat_ip6_address, &addr))
4939  break;
4940  else if (unformat (input, "delete") || unformat (input, "del"))
4941  is_del = 1;
4942  else
4943  return (unformat_parse_error (input));
4944  }
4945  }
4946 
4947  ip6_neighbor_proxy_add_del (sw_if_index, &addr, is_del);
4948 
4949  return error;
4950 }
4951 
4952 /* *INDENT-OFF* */
4953 VLIB_CLI_COMMAND (set_ip6_nd_proxy_command, static) =
4954 {
4955  .path = "set ip6 nd proxy",
4956  .short_help = "set ip6 nd proxy <HOST> <INTERFACE>",
4957  .function = set_ip6_nd_proxy_cmd,
4958 };
4959 /* *INDENT-ON* */
4960 
4961 void
4962 ethernet_ndp_change_mac (u32 sw_if_index)
4963 {
4964  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4965  ip6_neighbor_t *n;
4966  adj_index_t ai;
4967 
4968  /* *INDENT-OFF* */
4969  pool_foreach (n, nm->neighbor_pool,
4970  ({
4971  if (n->key.sw_if_index == sw_if_index)
4972  {
4973  adj_nbr_walk_nh6 (sw_if_index,
4974  &n->key.ip6_address,
4975  ip6_nd_mk_complete_walk, n);
4976  }
4977  }));
4978  /* *INDENT-ON* */
4979 
4980  ai = adj_glean_get (FIB_PROTOCOL_IP6, sw_if_index);
4981 
4982  if (ADJ_INDEX_INVALID != ai)
4983  adj_glean_update_rewrite (ai);
4984 }
4985 
4986 void
4987 send_ip6_na (vlib_main_t * vm, u32 sw_if_index)
4988 {
4989  ip6_main_t *i6m = &ip6_main;
4990  ip6_address_t *ip6_addr = ip6_interface_first_address (i6m, sw_if_index);
4991 
4992  send_ip6_na_w_addr (vm, ip6_addr, sw_if_index);
4993 }
4994 
4995 void
4996 send_ip6_na_w_addr (vlib_main_t * vm,
4997  const ip6_address_t * ip6_addr, u32 sw_if_index)
4998 {
4999  ip6_main_t *i6m = &ip6_main;
5000  vnet_main_t *vnm = vnet_get_main ();
5001  u8 *rewrite, rewrite_len;
5002  vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
5003  u8 dst_address[6];
5004 
5005  if (ip6_addr)
5006  {
5007  clib_warning
5008  ("Sending unsolicitated NA IP6 address %U on sw_if_idex %d",
5009  format_ip6_address, ip6_addr, sw_if_index);
5010 
5011  /* Form unsolicited neighbor advertisement packet from NS pkt template */
5012  int bogus_length;
5013  u32 bi = 0;
5014  icmp6_neighbor_solicitation_header_t *h =
5015  vlib_packet_template_get_packet (vm,
5016  &i6m->discover_neighbor_packet_template,
5017  &bi);
5018  if (!h)
5019  return;
5020 
5021  ip6_set_reserved_multicast_address (&h->ip.dst_address,
5022  IP6_MULTICAST_SCOPE_link_local,
5023  IP6_MULTICAST_GROUP_ID_all_hosts);
5024  h->ip.src_address = ip6_addr[0];
5025  h->neighbor.icmp.type = ICMP6_neighbor_advertisement;
5026  h->neighbor.target_address = ip6_addr[0];
5027  h->neighbor.advertisement_flags = clib_host_to_net_u32
5028  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
5029  h->link_layer_option.header.type =
5030  ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
5031  clib_memcpy (h->link_layer_option.ethernet_address,
5032  hi->hw_address, vec_len (hi->hw_address));
5033  h->neighbor.icmp.checksum =
5034  ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h->ip, &bogus_length);
5035  ASSERT (bogus_length == 0);
5036 
5037  /* Setup MAC header with IP6 Etype and mcast DMAC */
5038  vlib_buffer_t *b = vlib_get_buffer (vm, bi);
5039  ip6_multicast_ethernet_address (dst_address,
5040  IP6_MULTICAST_GROUP_ID_all_hosts);
5041  rewrite =
5042  ethernet_build_rewrite (vnm, sw_if_index, VNET_LINK_IP6, dst_address);
5043  rewrite_len = vec_len (rewrite);
5044  vlib_buffer_advance (b, -rewrite_len);
5045  ethernet_header_t *e = vlib_buffer_get_current (b);
5046  clib_memcpy (e->dst_address, rewrite, rewrite_len);
5047  vec_free (rewrite);
5048 
5049  /* Send unsolicited ND advertisement packet out the specified interface */
5050  vnet_buffer (b)->sw_if_index[VLIB_RX] =
5051  vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index;
5052  vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index);
5053  u32 *to_next = vlib_frame_vector_args (f);
5054  to_next[0] = bi;
5055  f->n_vectors = 1;
5056  vlib_put_frame_to_node (vm, hi->output_node_index, f);
5057  }
5058 }
5059 
5060 /*
5061  * fd.io coding-style-patch-verification: ON
5062  *
5063  * Local Variables:
5064  * eval: (c-set-style "gnu")
5065  * End:
5066  */
ip6_radv_t::due_time
f64 due_time
Definition: ip6_neighbor.c:163
ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
#define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
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#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:437
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Definition: ip6_neighbor.h:115
ip6_neighbor_main_t::if_radv_pool
ip6_radv_t * if_radv_pool
Definition: ip6_neighbor.c:202
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#define MIN_DELAY_BETWEEN_RAS
Definition: ip6_neighbor.c:132
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static void ip6_neighbor_adj_fib_add(ip6_neighbor_t *n, u32 fib_index)
Definition: ip6_neighbor.c:714
vnet_rewrite_one_header
#define vnet_rewrite_one_header(rw0, p0, most_likely_size)
Definition: rewrite.h:277
DEF_DEF_RTR_LIFETIME
#define DEF_DEF_RTR_LIFETIME
Definition: ip6_neighbor.c:127
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Definition: lookup.h:88
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static void ip6_nd_mk_incomplete(adj_index_t ai)
Definition: ip6_neighbor.c:517
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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:472
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
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Definition: mhash.h:46
vlib_buffer_add_data
u32 vlib_buffer_add_data(vlib_main_t *vm, vlib_buffer_free_list_index_t free_list_index, u32 buffer_index, void *data, u32 n_data_bytes)
Definition: buffer.c:776
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typedef address
Definition: ip_types.api:35
VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST
#define VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST
Definition: rewrite.h:302
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Definition: ip6_neighbor.c:1485
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Definition: ip6_neighbor.c:153
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Definition: ip6_neighbor.c:3142
ip6_neighbor_syslog
static void ip6_neighbor_syslog(vlib_main_t *vm, int priority, char *fmt,...)
Definition: ip6_neighbor.c:1438
src
vl_api_address_t src
Definition: vxlan_gbp.api:33
ip6_radv_t::ref_count
int ref_count
Definition: ip6_neighbor.c:120
pending_resolution_t
Definition: arp.c:61
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:247
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:3108
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:699
send_ip6_na_w_addr
void send_ip6_na_w_addr(vlib_main_t *vm, const ip6_address_t *ip6_addr, u32 sw_if_index)
Definition: ip6_neighbor.c:4996
a
a
Definition: bitmap.h:538
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:547
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:3485
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:213
ip6_nbr_probe
static void ip6_nbr_probe(ip_adjacency_t *adj)
Definition: ip6_neighbor.c:437
ip6_neighbor_init
static clib_error_t * ip6_neighbor_init(vlib_main_t *vm)
Definition: ip6_neighbor.c:4636
ip6_radv_t::last_radv_time
f64 last_radv_time
Definition: ip6_neighbor.c:142
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:397
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:123
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:1429
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:401
IP6_DISCOVER_NEIGHBOR_NEXT_DROP
Definition: ip6_neighbor.c:3144
stop_sending_rs
static void stop_sending_rs(vlib_main_t *vm, ip6_radv_t *ra)
Definition: ip6_neighbor.c:2361
ip6_nd_mk_complete
static void ip6_nd_mk_complete(adj_index_t ai, ip6_neighbor_t *nbr)
Definition: ip6_neighbor.c:507
ip_adjacency_t_::nbr
struct ip_adjacency_t_::@45::@46 nbr
IP_LOOKUP_NEXT_ARP/IP_LOOKUP_NEXT_REWRITE.
ip6_neighbor_main_t::neighbor_index_by_key
mhash_t neighbor_index_by_key
Definition: ip6_neighbor.c:198
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:2482
PREDICT_TRUE
#define PREDICT_TRUE(x)
Definition: clib.h:108
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:2550
ip6_table_bind_callback_t::function_opaque
uword function_opaque
Definition: ip6.h:116
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:48
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:4924
ip6_radv_t::send_unicast
int send_unicast
Definition: ip6_neighbor.c:113
ip6_radv_prefix_t::prefix
ip6_address_t prefix
Definition: ip6_neighbor.c:45
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:119
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:321
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:1468
ip6_radv_t::last_multicast_time
f64 last_multicast_time
Definition: ip6_neighbor.c:143
send_ip6_na
void send_ip6_na(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:4987
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:400
NULL
#define NULL
Definition: clib.h:57
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:288
vlib_time_now
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:227
IP_LOOKUP_NEXT_BCAST
Broadcasr Adjacency.
Definition: adj.h:85
IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX
Definition: ip6_neighbor.c:3145
ip6_radv_t::adv_prefixes_pool
ip6_radv_prefix_t * adv_prefixes_pool
Definition: ip6_neighbor.c:98
ip_adjacency_t_
IP unicast adjacency.
Definition: adj.h:185
ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW
Definition: ip6_neighbor.c:1488
ip_adjacency_t_::sub_type
union ip_adjacency_t_::@45 sub_type
ip6_mldp_group_t
Definition: ip6_neighbor.c:69
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:438
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:282
ip6_neighbors_entries
ip6_neighbor_t * ip6_neighbors_entries(u32 sw_if_index)
Definition: ip6_neighbor.c:1009
ip6_neighbor_main_t::pending_resolutions
pending_resolution_t * pending_resolutions
Definition: ip6_neighbor.c:188
vlib_main_t::thread_index
u32 thread_index
Definition: main.h:179
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:1140
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:3157
ip_interface_address_t::address_length
u16 address_length
Definition: lookup.h:97
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:74
vec_add1
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:523
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:174
vnet_sw_interface_compare
word vnet_sw_interface_compare(vnet_main_t *vnm, uword sw_if_index0, uword sw_if_index1)
Definition: interface.c:1147
clib_cpu_time_now
static u64 clib_cpu_time_now(void)
Definition: time.h:73
IP6_NBR_MK_KEY
#define IP6_NBR_MK_KEY(k, sw_if_index, addr)
Definition: ip6_neighbor.c:530
logmask
static int logmask
Definition: ip6_neighbor.c:1435
ip6_get_ll_address
int ip6_get_ll_address(u32 sw_if_index, ip6_address_t *addr)
Definition: ip6_neighbor.c:4204
ip6_header_t::hop_limit
u8 hop_limit
Definition: ip6_packet.h:375
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:4877
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:164
STRUCT_OFFSET_OF
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:64
ip6_radv_prefix_t::adv_pref_lifetime_in_secs
u32 adv_pref_lifetime_in_secs
Definition: ip6_neighbor.c:50
DEF_ADV_PREF_LIFETIME
#define DEF_ADV_PREF_LIFETIME
Definition: ip6_neighbor.c:63
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 u8 *link_layer_address, int is_add, int is_static, int is_no_fib_entry)
Definition: ip6_neighbor.c:415
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:716
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:2587
format
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
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:289
ip6_address_is_local_unicast
static uword ip6_address_is_local_unicast(const ip6_address_t *a)
Definition: ip6_packet.h:328
unformat_vnet_sw_interface
unformat_function_t unformat_vnet_sw_interface
Definition: interface_funcs.h:389
ip6_fib.h
random_u64
static u64 random_u64(u64 *seed)
64-bit random number generator Again, constants courtesy of Donald Knuth.
Definition: random.h:126
ip6_radv_t::cease_radv
int cease_radv
Definition: ip6_neighbor.c:112
vnet_add_del_ip6_nd_change_event
int vnet_add_del_ip6_nd_change_event(vnet_main_t *vnm, void *data_callback, u32 pid, void *address_arg, uword node_index, uword type_opaque, uword data, int is_add)
Definition: ip6_neighbor.c:4729
VNET_HW_INTERFACE_FLAG_LINK_UP
#define VNET_HW_INTERFACE_FLAG_LINK_UP
Definition: interface.h:494
ip6_radv_t::adv_neighbor_reachable_time_in_msec
u32 adv_neighbor_reachable_time_in_msec
Definition: ip6_neighbor.c:87
ip6_radv_t
Definition: ip6_neighbor.c:79
ip6_neighbor_main_t::ip6_ra_publisher_et
uword ip6_ra_publisher_et
Definition: ip6_neighbor.c:214
vlib_node_runtime_t::errors
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:472
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:228
ip6_neighbor_set_unset_rpc_args_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.c:407
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:378
ip6_radv_t::send_radv
int send_radv
Definition: ip6_neighbor.c:111
format_vnet_sw_if_index_name
format_function_t format_vnet_sw_if_index_name
Definition: interface_funcs.h:385
ra_report_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.h:126
u8
unsigned char u8
Definition: types.h:56
vlib_frame_t
Definition: node.h:386
vlib_buffer_copy
static vlib_buffer_t * vlib_buffer_copy(vlib_main_t *vm, vlib_buffer_t *b)
Definition: buffer_funcs.h:728
icmp6_send_router_solicitation_params_t::irt
u32 irt
Definition: ip6_neighbor.h:104
pending_resolution_t::data_callback
void * data_callback
Definition: arp.c:68
ra_report_prefix_info_t::preferred_time
u32 preferred_time
Definition: ip6_neighbor.h:121
disable_ip6_interface
clib_error_t * disable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:4070
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:206
wc_nd_report_t
Definition: ip6_neighbor.h:93
ip6_rewrite_mcast_node
vlib_node_registration_t ip6_rewrite_mcast_node
(constructor) VLIB_REGISTER_NODE (ip6_rewrite_mcast_node)
Definition: ip6_forward.c:2027
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:2892
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:203
ip6_neighbor_t::flags
ip6_neighbor_flags_t flags
Definition: ip6_neighbor.h:42
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:2292
vlib_node_runtime_t
Definition: node.h:466
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
vnet_hw_interface_t::flags
u32 flags
Definition: interface.h:492
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:215
ip6_print_addrs
static void ip6_print_addrs(vlib_main_t *vm, u32 *addrs)
Definition: ip6_neighbor.c:3854
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:380
ICMP6_ROUTER_SOLICITATION_NEXT_DROP
Definition: ip6_neighbor.c:1487
ip6_address_hash_to_u64
static u64 ip6_address_hash_to_u64(const ip6_address_t *a)
Definition: ip6_packet.h:357
memset
memset(h->entries, 0, sizeof(h->entries[0])*entries)
vnet_hw_interface_t::hw_address
u8 * hw_address
Definition: interface.h:539
ip6_neighbors_pool
ip6_neighbor_t * ip6_neighbors_pool(void)
Definition: ip6_neighbor.c:1002
l2_input.h
static_always_inline
#define static_always_inline
Definition: clib.h:95
format_ethernet_address
u8 * format_ethernet_address(u8 *s, va_list *args)
Definition: format.c:44
vlib_packet_template_get_packet
void * vlib_packet_template_get_packet(vlib_main_t *vm, vlib_packet_template_t *t, u32 *bi_result)
Definition: buffer.c:738
pool_foreach
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:443
vnet_nd_wc_publish
static int vnet_nd_wc_publish(u32 sw_if_index, u8 *mac, ip6_address_t *ip6)
publish wildcard arp event
Definition: ip6_neighbor.c:268
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:3336
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:542
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:95
ra_report_t
Definition: ip6_neighbor.h:124
sw_if_index
u32 sw_if_index
Definition: vxlan_gbp.api:39
ip6_neighbor_main_t::wc_ip6_nd_publisher_node
uword wc_ip6_nd_publisher_node
Definition: ip6_neighbor.c:209
ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE
#define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE
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:403
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:4264
format_ip6_neighbor_ip6_entry
static u8 * format_ip6_neighbor_ip6_entry(u8 *s, va_list *va)
Definition: ip6_neighbor.c:337
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:3021
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:1029
DEF_ADV_VALID_LIFETIME
#define DEF_ADV_VALID_LIFETIME
Definition: ip6_neighbor.c:62
ip6_radv_t::start_time
f64 start_time
Definition: ip6_neighbor.c:165
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 u8 *link_layer_address, uword n_bytes_link_layer_address, int is_static, int is_no_fib_entry)
Definition: ip6_neighbor.c:774
ip6_radv_t::address_to_mldp_index
mhash_t address_to_mldp_index
Definition: ip6_neighbor.c:107
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:182
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:638
ip6_neighbor_public_main_t
Definition: ip6_neighbor.h:146
ICMP6_ROUTER_SOLICITATION_N_NEXT
Definition: ip6_neighbor.c:1490
adj_unlock
void adj_unlock(adj_index_t adj_index)
Release a reference counting lock on the adjacency.
Definition: adj.c:252
set_ip6_link_local_address
clib_error_t * set_ip6_link_local_address(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *address)
Definition: ip6_neighbor.c:4427
vlib_buffer_free_list_t
Definition: buffer.h:346
u32
unsigned int u32
Definition: types.h:88
ip6_radv_t::max_radv_interval
f64 max_radv_interval
Definition: ip6_neighbor.c:136
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:207
ip6_icmp_neighbor_discovery_event_data_t::fib_index
u32 fib_index
Definition: ip6_neighbor.c:229
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:1084
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:194
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:4800
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:66
VLIB_FRAME_SIZE
#define VLIB_FRAME_SIZE
Definition: node.h:382
ra_signal_report
static void ra_signal_report(ra_report_t *r)
Definition: ip6_neighbor.c:314
random_f64_from_to
static f64 random_f64_from_to(f64 from, f64 to)
Definition: ip6_neighbor.c:2268
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:323
IP6_DISCOVER_NEIGHBOR_N_NEXT
Definition: ip6_neighbor.c:3146
ra_report_t::time_in_msec_between_retransmitted_neighbor_solicitations
u32 time_in_msec_between_retransmitted_neighbor_solicitations
Definition: ip6_neighbor.h:132
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:154
ip6_neighbor_main_t::opcode_by_name
uword * opcode_by_name
Definition: ip6_neighbor.c:184
MAX_DELAY_BETWEEN_RAS
#define MAX_DELAY_BETWEEN_RAS
Definition: ip6_neighbor.c:133
fl
#define fl(x, y)
FIB_ENTRY_FLAG_NONE
Definition: fib_entry.h:275
ip6_table_bind_callback_t
Definition: ip6.h:113
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:224
ip6_radv_t::max_delay_between_radv
f64 max_delay_between_radv
Definition: ip6_neighbor.c:139
ip6_radv_t::adv_time_in_msec_between_retransmitted_neighbor_solicitations
u32 adv_time_in_msec_between_retransmitted_neighbor_solicitations
Definition: ip6_neighbor.c:88
pool_flush
#define pool_flush(VAR, POOL, BODY)
Remove all elements from a pool in a safe way.
Definition: pool.h:503
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:54
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:383
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:24
ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX
Definition: ip6_neighbor.c:1489
ip6_header_t::protocol
u8 protocol
Definition: ip6_packet.h:372
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:464
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:137
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:4699
vlib_buffer_t::current_length
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:113
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:960
FIB_SOURCE_ADJ
Adjacency source.
Definition: fib_entry.h:108
IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT
Definition: ip6_neighbor.c:3152
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:131
pending_resolution_t::type_opaque
uword type_opaque
Definition: arp.c:65
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:2571
address_length
u8 address_length
Definition: ip_types.api:42
ethernet_interface::address
u8 address[6]
Definition: ethernet.h:174
ctx
long ctx[MAX_CONNS]
Definition: main.c:144
wc_nd_report_t::mac
u8 mac[6]
Definition: ip6_neighbor.h:97
ip6_radv_t::all_routers_mcast
int all_routers_mcast
Definition: ip6_neighbor.c:117
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:3341
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:4225
DEF_MAX_RADV_INTERVAL
#define DEF_MAX_RADV_INTERVAL
Definition: ip6_neighbor.c:124
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:191
ip6_radv_t::link_layer_address
u8 link_layer_address[8]
Definition: ip6_neighbor.c:94
ip6_radv_t::next_multicast_time
f64 next_multicast_time
Definition: ip6_neighbor.c:144
vlib_buffer_get_current
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:205
VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX
#define VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX
Definition: buffer.h:440
ip6_neighbor_main_t::limit_neighbor_cache_size
u32 limit_neighbor_cache_size
Definition: ip6_neighbor.c:205
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:274
foreach_log_level
#define foreach_log_level
Definition: ip6_neighbor.c:1412
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:854
ELOG_DATA
#define ELOG_DATA(em, f)
Definition: elog.h:481
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:200
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:107
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:720
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:3149
ip6_radv_t::adv_other_flag
int adv_other_flag
Definition: ip6_neighbor.c:85
vlib_node_runtime_t::node_index
u32 node_index
Node index.
Definition: node.h:494
ip6_radv_t::address_to_prefix_index
mhash_t address_to_prefix_index
Definition: ip6_neighbor.c:101
ra_report_t::router_lifetime_in_sec
u16 router_lifetime_in_sec
Definition: ip6_neighbor.h:130
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:364
ra_report_t::prefixes
ra_report_prefix_info_t * prefixes
Definition: ip6_neighbor.h:135
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:3329
ra_report_prefix_info_t::valid_time
u32 valid_time
Definition: ip6_neighbor.h:120
ip6_main_t::add_del_interface_address_callbacks
ip6_add_del_interface_address_callback_t * add_del_interface_address_callbacks
Definition: ip6.h:197
ra_set_publisher_node
void ra_set_publisher_node(uword node_index, uword event_type)
Definition: ip6_neighbor.c:329
ip6_neighbor.h
vlib_buffer_t::error
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:138
IP6_NEIGHBOR_FLAG_DYNAMIC
Definition: ip6_neighbor.h:34
ip6_link_local_address_from_ethernet_mac_address
void ip6_link_local_address_from_ethernet_mac_address(ip6_address_t *ip, u8 *mac)
Definition: ip6_forward.c:2684
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:2517
ip6_radv_t::failed_device_check
int failed_device_check
Definition: ip6_neighbor.c:116
flags
u32 flags
Definition: vhost_user.h:115
FIB_ROUTE_PATH_FLAG_NONE
Definition: fib_types.h:320
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:95
pool_free
#define pool_free(p)
Free a pool.
Definition: pool.h:357
ip6_radv_t::mldp_group_pool
ip6_mldp_group_t * mldp_group_pool
Definition: ip6_neighbor.c:104
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:1156
mac_address
typedef mac_address
Definition: ethernet_types.api:17
wc_nd_set_publisher_node
void wc_nd_set_publisher_node(uword node_index, uword event_type)
Definition: ip6_neighbor.c:298
enable_ip6_interface
clib_error_t * enable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:4123
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:260
icmp6_neighbor_solicitation_or_advertisement_next_t
icmp6_neighbor_solicitation_or_advertisement_next_t
Definition: ip6_neighbor.c:1148
ip6_radv_t::adv_managed_flag
int adv_managed_flag
Definition: ip6_neighbor.c:84
ip6_main_t
Definition: ip6.h:154
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:3098
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:290
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:154
IP_LOOKUP_NEXT_DROP
Adjacency to drop this packet.
Definition: adj.h:53
VLIB_REGISTER_NODE
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:155
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:2281
ra_report_t::router_address
u8 router_address[16]
Definition: ip6_neighbor.h:127
vlib_frame_t::n_vectors
u16 n_vectors
Definition: node.h:401
vlib_get_thread_index
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:211
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:235
vm
vlib_main_t * vm
Definition: buffer.c:294
ra_publish
static int ra_publish(ra_report_t *r)
Definition: ip6_neighbor.c:306
dst
vl_api_address_t dst
Definition: vxlan_gbp.api:34
vnet_hw_interface_t
Definition: interface.h:487
ip6_mldp_group_t::mcast_address
ip6_address_t mcast_address
Definition: ip6_neighbor.c:73
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:371
log_level_t
log_level_t
Definition: ip6_neighbor.c:1422
vec_free
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:339
icmp6_send_router_solicitation_params_t::mrt
u32 mrt
Definition: ip6_neighbor.h:105
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:83
ICMP6_NEIGHBOR_SOLICITATION_N_NEXT
Definition: ip6_neighbor.c:1152
ip6_radv_t::sleep_interval
f64 sleep_interval
Definition: ip6_neighbor.c:162
ICMP6_ND_EVENT_INIT
Definition: ip6_neighbor.c:220
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:75
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
vlib_buffer_t
Definition: buffer.h:103
clib_memcpy
#define clib_memcpy(a, b, c)
Definition: string.h:75
ip_lookup_main_t
Definition: lookup.h:120
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:4609
ip6_icmp_neighbor_discovery_event_data_t::up_down_swindex
u32 up_down_swindex
Definition: ip6_neighbor.c:228
DEF_CURR_HOP_LIMIT
#define DEF_CURR_HOP_LIMIT
Definition: ip6_neighbor.c:126
vlib_main_t::elog_main
elog_main_t elog_main
Definition: main.h:157
ip6_radv_t::adv_link_layer_address
int adv_link_layer_address
Definition: ip6_neighbor.c:114
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:102
pending_resolution_t::pid
u32 pid
Definition: arp.c:69
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:1076
ip6_neighbor_t::fib_entry_index
fib_node_index_t fib_entry_index
Definition: ip6_neighbor.h:44
adj_index_t
u32 adj_index_t
An index for adjacencies.
Definition: adj_types.h:30
ARRAY_LEN
#define ARRAY_LEN(x)
Definition: clib.h:61
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:455
l2_bridge_domain_t::mac_by_ip6
uword * mac_by_ip6
Definition: l2_bd.h:100
ELOG_TYPE_DECLARE
#define ELOG_TYPE_DECLARE(f)
Definition: elog.h:439
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:134
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:2375
ra_report_t::current_hop_limit
u8 current_hop_limit
Definition: ip6_neighbor.h:128
ip6_next_header
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:405
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:3151
ip6_neighbor_set_unset_rpc_args_t::is_no_fib_entry
u8 is_no_fib_entry
Definition: ip6_neighbor.c:405
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:147
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:130
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:910
ip6_add_del_interface_address_callback_t::function
ip6_add_del_interface_address_function_t * function
Definition: ip6.h:105
ip6_radv_prefix_t::valid_lifetime_expires
f64 valid_lifetime_expires
Definition: ip6_neighbor.c:53
MAX_INITIAL_RTR_ADVERTISEMENTS
#define MAX_INITIAL_RTR_ADVERTISEMENTS
Definition: ip6_neighbor.c:131
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:513
ip6_radv_t::link_local_address
ip6_address_t link_local_address
Definition: ip6_neighbor.c:157
unformat_ethernet_address
uword unformat_ethernet_address(unformat_input_t *input, va_list *args)
Definition: format.c:233
ASSERT
#define ASSERT(truth)
Definition: error_bootstrap.h:69
ip6_radv_prefix_t::enabled
int enabled
Definition: ip6_neighbor.c:57
send_rs_process_node
vlib_node_registration_t send_rs_process_node
(constructor) VLIB_REGISTER_NODE (send_rs_process_node)
Definition: ip6_neighbor.c:2474
ip6_neighbor_main_t::neighbor_delete_rotor
u32 neighbor_delete_rotor
Definition: ip6_neighbor.c:206
l2_bridge_domain_t
Definition: l2_bd.h:61
ip6_radv_t::prefix_option
int prefix_option
Definition: ip6_neighbor.c:115
mhash_get
static uword * mhash_get(mhash_t *h, const void *key)
Definition: mhash.h:110
ip6_neighbor_key_t::ip6_address
ip6_address_t ip6_address
Definition: ip6_neighbor.h:26
ip6_neighbor_main_t
Definition: ip6_neighbor.c:181
ip6_main
ip6_main_t ip6_main
Definition: ip6_forward.c:2590
ip6_main_t::lookup_main
ip_lookup_main_t lookup_main
Definition: ip6.h:161
ip6_add_del_interface_address_callback_t::function_opaque
uword function_opaque
Definition: ip6.h:106
ip6_neighbor_key_t::pad
u32 pad
Definition: ip6_neighbor.h:28
ip6_radv_t::n_advertisements_sent
u32 n_advertisements_sent
Definition: ip6_neighbor.c:152
ip6_radv_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.c:110
mhash_free
static void mhash_free(mhash_t *h)
Definition: mhash.h:149
vlib_buffer_get_free_list_index
static vlib_buffer_free_list_index_t vlib_buffer_get_free_list_index(vlib_buffer_t *b)
Definition: buffer_funcs.h:414
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:3871
ip6_neighbor_key_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.h:27
vlib_register_node
u32 vlib_register_node(vlib_main_t *vm, vlib_node_registration_t *r)
Definition: node.c:519
ip6_neighbor_set_unset_rpc_args_t::is_static
u8 is_static
Definition: ip6_neighbor.c:404
ip6_radv_prefix_t
Definition: ip6_neighbor.c:42
ip6_header_t
Definition: ip6_packet.h:362
ip6_radv_t::min_delay_between_radv
f64 min_delay_between_radv
Definition: ip6_neighbor.c:138
ip6_radv_prefix_t::adv_on_link_flag
int adv_on_link_flag
Definition: ip6_neighbor.c:47
ip6_neighbor_main_t::wc_ip6_nd_publisher_et
uword wc_ip6_nd_publisher_et
Definition: ip6_neighbor.c:210
DEF_MIN_RADV_INTERVAL
#define DEF_MIN_RADV_INTERVAL
Definition: ip6_neighbor.c:125
ip6_neighbor_set_unset_rpc_args_t::link_layer_address
u8 link_layer_address[6]
Definition: ip6_neighbor.c:406
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:1494
ip6_neighbor_sort
static int ip6_neighbor_sort(void *a1, void *a2)
Definition: ip6_neighbor.c:989
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:2434
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:200
ip6_radv_t::adv_router_lifetime_in_sec
u16 adv_router_lifetime_in_sec
Definition: ip6_neighbor.c:86
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:218
vnet_sw_interface_t::hw_if_index
u32 hw_if_index
Definition: interface.h:736
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:46
ip6_radv_prefix_t::deprecated_prefix_flag
int deprecated_prefix_flag
Definition: ip6_neighbor.c:58
ip6_neighbor_t::time_last_updated
f64 time_last_updated
Definition: ip6_neighbor.h:43
ra_report_t::flags
u8 flags
Definition: ip6_neighbor.h:129
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:321
ethernet_interface
Definition: ethernet.h:155
ip6_add_del_interface_address_callback_t
Definition: ip6.h:103
FIB_SOURCE_INTERFACE
Route added as a result of interface configuration.
Definition: fib_entry.h: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_NEIGHBOR_FLAG_NO_FIB_ENTRY
Definition: ip6_neighbor.h:35
ip6_radv_t::keep_sending_rs
u8 keep_sending_rs
Definition: ip6_neighbor.c:160
ip6_neighbor_main_t::pending_resolutions_by_address
mhash_t pending_resolutions_by_address
Definition: ip6_neighbor.c:187
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:3089
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:567
pending_resolution_t::next_index
u32 next_index
Definition: arp.c:63
vlib_get_main
static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:23
vnet_sw_interface_is_admin_up
static uword vnet_sw_interface_is_admin_up(vnet_main_t *vnm, u32 sw_if_index)
Definition: interface_funcs.h:248
vlib_buffer_alloc_from_free_list
static u32 vlib_buffer_alloc_from_free_list(vlib_main_t *vm, u32 *buffers, u32 n_buffers, vlib_buffer_free_list_index_t index)
Allocate buffers from specific freelist into supplied array.
Definition: buffer_funcs.h:444
ip6_radv_t::buffer
vlib_buffer_t * buffer
Definition: ip6_neighbor.c:166
ra_report_prefix_info_t::dst_address_length
u8 dst_address_length
Definition: ip6_neighbor.h:118
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:161
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:241
force_reuse_neighbor_entry
static ip6_neighbor_t * force_reuse_neighbor_entry(void)
Definition: ip6_neighbor.c:743
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:365
ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP
Definition: ip6_neighbor.c:1150
ethernet_ndp_change_mac
void ethernet_ndp_change_mac(u32 sw_if_index)
Definition: ip6_neighbor.c:4962
ra_report_prefix_info_t::flags
u8 flags
Definition: ip6_neighbor.h:119
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:1795
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:2872
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
set_ip6_link_local_address_cmd
clib_error_t * set_ip6_link_local_address_cmd(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:4482
ip6_neighbor_send_mldpv2_report
static void ip6_neighbor_send_mldpv2_report(u32 sw_if_index)
Definition: ip6_neighbor.c:2720
l2input_main
l2input_main_t l2input_main
Definition: l2_input.c:113
ip6_icmp_neighbor_discovery_event_node
vlib_node_registration_t ip6_icmp_neighbor_discovery_event_node
Definition: ip6_neighbor.c:3081
IP6_NEIGHBOR_FLAG_STATIC
Definition: ip6_neighbor.h:33
ip6_header_t::payload_length
u16 payload_length
Definition: ip6_packet.h:369
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:489
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:977
ip6_address_is_global_unicast
static uword ip6_address_is_global_unicast(const ip6_address_t *a)
Definition: ip6_packet.h:335
ethernet_get_interface
ethernet_interface_t * ethernet_get_interface(ethernet_main_t *em, u32 hw_if_index)
Definition: interface.c:887
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:935
ip6_set_solicited_node_multicast_address
static void ip6_set_solicited_node_multicast_address(ip6_address_t *a, u32 id)
Definition: ip6_packet.h:195
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:40
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:106
elog_string
u32 elog_string(elog_main_t *em, char *fmt,...)
add a string to the event-log string table
Definition: elog.c:538
icmp6_register_type
void icmp6_register_type(vlib_main_t *vm, icmp6_type_t type, u32 node_index)
Definition: icmp6.c:753
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:200
icmp6_input_trace_t
Definition: icmp6.h:59
VLIB_BUFFER_TRACE_TRAJECTORY_INIT
#define VLIB_BUFFER_TRACE_TRAJECTORY_INIT(b)
Definition: buffer.h:547
vlib_main_t
Definition: main.h:59
uword
u64 uword
Definition: types.h:112
ip6_neighbor_public_main
ip6_neighbor_public_main_t ip6_neighbor_public_main
Definition: ip6_neighbor.c:234
format_vlib_time
format_function_t format_vlib_time
Definition: node_funcs.h:1171
vec_sort_with_function
#define vec_sort_with_function(vec, f)
Sort a vector using the supplied element comparison function.
Definition: vec.h:982
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:133
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:3383
vlib_node_t
Definition: node.h:266
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:4529
vlib_frame_vector_args
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:267
ip6_table_bind_callback_t::function
ip6_table_bind_function_t * function
Definition: ip6.h:115
icmp6_send_router_solicitation_params_t::mrd
u32 mrd
Definition: ip6_neighbor.h:107
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:80
l2input_main_t::bd_configs
l2_bridge_domain_t * bd_configs
Definition: l2_input.h:64
prefix
typedef prefix
Definition: ip_types.api:40
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:3349
ip6_radv_prefix_t::decrement_lifetime_flag
int decrement_lifetime_flag
Definition: ip6_neighbor.c:59
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:408
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:305
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:3126
vlib_buffer_init_for_free_list
static void vlib_buffer_init_for_free_list(vlib_buffer_t *dst, vlib_buffer_free_list_t *fl)
Definition: buffer_funcs.h:1078
vnet_buffer
#define vnet_buffer(b)
Definition: buffer.h:344
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:575
ip6_radv_t::initial_adverts_interval
f64 initial_adverts_interval
Definition: ip6_neighbor.c:148
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:718
ip6_radv_t::mcast_adj_index
adj_index_t mcast_adj_index
Definition: ip6_neighbor.c:121
pending_resolution_t::node_index
uword node_index
Definition: arp.c:64
ip6_icmp_neighbor_discovery_event_type_t
ip6_icmp_neighbor_discovery_event_type_t
Definition: ip6_neighbor.c:218
vnet_hw_interface_t::output_node_index
u32 output_node_index
Definition: interface.h:543
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:3364
vec_foreach
#define vec_foreach(var, vec)
Vector iterator.
Definition: vec_bootstrap.h:185
ip6_ethernet_update_adjacency
void ip6_ethernet_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Definition: ip6_neighbor.c:623
ip6_neighbor_t
Definition: ip6_neighbor.h:38
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:818
vlib_node_runtime_t::flags
u16 flags
Copy of main node flags.
Definition: node.h:507
ip6_radv_prefix_t::adv_valid_lifetime_in_secs
u32 adv_valid_lifetime_in_secs
Definition: ip6_neighbor.c:49
ip6_add_del_interface_address
clib_error_t * ip6_add_del_interface_address(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *address, u32 address_length, u32 is_del)
Definition: ip6_forward.c:193
ip6_multicast_ethernet_address
static void ip6_multicast_ethernet_address(u8 *ethernet_address, u32 group_id)
Definition: ip6_packet.h:224
ip6_mldp_group_t::type
u8 type
Definition: ip6_neighbor.c:72
vlib_buffer_get_free_list
static vlib_buffer_free_list_t * vlib_buffer_get_free_list(vlib_main_t *vm, vlib_buffer_free_list_index_t free_list_index)
Definition: buffer_funcs.h:675
ip6_radv_t::initial_adverts_sent
u32 initial_adverts_sent
Definition: ip6_neighbor.c:149
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:173
ip6_nd_find
static ip6_neighbor_t * ip6_nd_find(u32 sw_if_index, const ip6_address_t *addr)
Definition: ip6_neighbor.c:538
ip6_neighbor_main_t::mac_changes_by_address
mhash_t mac_changes_by_address
Definition: ip6_neighbor.c:191
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:557
MAX_INITIAL_RTR_ADVERT_INTERVAL
#define MAX_INITIAL_RTR_ADVERT_INTERVAL
Definition: ip6_neighbor.c:130
VLIB_NODE_FLAG_TRACE
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:310
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_t::flags
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:116
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:503
IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS
Definition: ip6_neighbor.c:3153
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:3622
ip6_radv_t::max_rtr_default_lifetime
f64 max_rtr_default_lifetime
Definition: ip6_neighbor.c:140
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:3065
ip6_neighbor_main_t::neighbor_pool
ip6_neighbor_t * neighbor_pool
Definition: ip6_neighbor.c:196
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:296
mac
vl_api_mac_address_t mac
Definition: gbp.api:31
vlib_cli_output
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:725
ra_report_prefix_info_t::dst_address
ip6_address_t dst_address
Definition: ip6_neighbor.h:117
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:58
ip6_neighbor_t::link_layer_address
u8 link_layer_address[8]
Definition: ip6_neighbor.h:41
pending_resolution_t::data
uword data
Definition: arp.c:66
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:1901
ip6_sw_interface_enable_disable
void ip6_sw_interface_enable_disable(u32 sw_if_index, u32 is_enable)
Definition: ip6_forward.c:142
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:128
ip6_radv_t::adv_link_mtu
u32 adv_link_mtu
Definition: ip6_neighbor.c:91
VLIB_RX
Definition: defs.h:46
ip6_neighbor_main
static ip6_neighbor_main_t ip6_neighbor_main
Definition: ip6_neighbor.c:233
ip6_neighbor_main_t::mac_changes
pending_resolution_t * mac_changes
Definition: ip6_neighbor.c:192
ip6_radv_t::seed
u32 seed
Definition: ip6_neighbor.c:118
ip6_header_t::dst_address
ip6_address_t dst_address
Definition: ip6_packet.h:378
ip6_interface_enabled
int ip6_interface_enabled(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:4108
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:185
ip6_icmp_neighbor_discovery_event_data_t::add_del_swindex
u32 add_del_swindex
Definition: ip6_neighbor.c:225
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:104
ip6_icmp_neighbor_discovery_event_data_t
Definition: ip6_neighbor.c:223
ip6_set_neighbor_limit
clib_error_t * ip6_set_neighbor_limit(u32 neighbor_limit)
Definition: ip6_neighbor.c:4600
ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY
Definition: ip6_neighbor.c:1151
format_icmp6_input_trace
format_function_t format_icmp6_input_trace
Definition: icmp6.h:64
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:768
ip6_radv_prefix_t::prefix_len
u8 prefix_len
Definition: ip6_neighbor.c:46
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:624
pool_elts
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128