FD.io VPP  v18.07-rc0-415-g6c78436
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 
29 /**
30  * @file
31  * @brief IPv6 Neighbor Adjacency and Neighbor Discovery.
32  *
33  * The files contains the API and CLI code for managing IPv6 neighbor
34  * adjacency tables and neighbor discovery logic.
35  */
36 
37 /* can't use sizeof link_layer_address, that's 8 */
38 #define ETHER_MAC_ADDR_LEN 6
39 
40 /* advertised prefix option */
41 typedef struct
42 {
43  /* basic advertised information */
44  ip6_address_t prefix;
45  u8 prefix_len;
46  int adv_on_link_flag;
47  int adv_autonomous_flag;
48  u32 adv_valid_lifetime_in_secs;
49  u32 adv_pref_lifetime_in_secs;
50 
51  /* advertised values are computed from these times if decrementing */
52  f64 valid_lifetime_expires;
53  f64 pref_lifetime_expires;
54 
55  /* local information */
56  int enabled;
57  int deprecated_prefix_flag;
58  int decrement_lifetime_flag;
59 
60 #define MIN_ADV_VALID_LIFETIME 7203 /* seconds */
61 #define DEF_ADV_VALID_LIFETIME 2592000
62 #define DEF_ADV_PREF_LIFETIME 604800
63 
64  /* extensions are added here, mobile, DNS etc.. */
65 } ip6_radv_prefix_t;
66 
67 
68 typedef struct
69 {
70  /* group information */
71  u8 type;
72  ip6_address_t mcast_address;
73  u16 num_sources;
74  ip6_address_t *mcast_source_address_pool;
75 } ip6_mldp_group_t;
76 
77 /* configured router advertisement information per ipv6 interface */
78 typedef struct
79 {
80 
81  /* advertised config information, zero means unspecified */
82  u8 curr_hop_limit;
83  int adv_managed_flag;
84  int adv_other_flag;
85  u16 adv_router_lifetime_in_sec;
86  u32 adv_neighbor_reachable_time_in_msec;
87  u32 adv_time_in_msec_between_retransmitted_neighbor_solicitations;
88 
89  /* mtu option */
90  u32 adv_link_mtu;
91 
92  /* source link layer option */
93  u8 link_layer_address[8];
94  u8 link_layer_addr_len;
95 
96  /* prefix option */
97  ip6_radv_prefix_t *adv_prefixes_pool;
98 
99  /* Hash table mapping address to index in interface advertised prefix pool. */
100  mhash_t address_to_prefix_index;
101 
102  /* MLDP group information */
103  ip6_mldp_group_t *mldp_group_pool;
104 
105  /* Hash table mapping address to index in mldp address pool. */
106  mhash_t address_to_mldp_index;
107 
108  /* local information */
109  u32 sw_if_index;
110  int send_radv; /* radv on/off on this interface - set by config */
111  int cease_radv; /* we are ceasing to send - set byf config */
112  int send_unicast;
113  int adv_link_layer_address;
114  int prefix_option;
115  int failed_device_check;
116  int all_routers_mcast;
117  u32 seed;
118  u64 randomizer;
119  int ref_count;
120  adj_index_t mcast_adj_index;
121 
122  /* timing information */
123 #define DEF_MAX_RADV_INTERVAL 200
124 #define DEF_MIN_RADV_INTERVAL .75 * DEF_MAX_RADV_INTERVAL
125 #define DEF_CURR_HOP_LIMIT 64
126 #define DEF_DEF_RTR_LIFETIME 3 * DEF_MAX_RADV_INTERVAL
127 #define MAX_DEF_RTR_LIFETIME 9000
128 
129 #define MAX_INITIAL_RTR_ADVERT_INTERVAL 16 /* seconds */
130 #define MAX_INITIAL_RTR_ADVERTISEMENTS 3 /*transmissions */
131 #define MIN_DELAY_BETWEEN_RAS 3 /* seconds */
132 #define MAX_DELAY_BETWEEN_RAS 1800 /* seconds */
133 #define MAX_RA_DELAY_TIME .5 /* seconds */
134 
135  f64 max_radv_interval;
136  f64 min_radv_interval;
137  f64 min_delay_between_radv;
138  f64 max_delay_between_radv;
139  f64 max_rtr_default_lifetime;
140 
141  f64 last_radv_time;
142  f64 last_multicast_time;
143  f64 next_multicast_time;
144 
145 
146  u32 initial_adverts_count;
147  f64 initial_adverts_interval;
148  u32 initial_adverts_sent;
149 
150  /* stats */
151  u32 n_advertisements_sent;
152  u32 n_solicitations_rcvd;
153  u32 n_solicitations_dropped;
154 
155  /* Link local address to use (defaults to underlying physical for logical interfaces */
156  ip6_address_t link_local_address;
157 
158  /* router solicitations sending state */
159  u8 keep_sending_rs; /* when true then next fields are valid */
160  icmp6_send_router_solicitation_params_t params;
161  f64 sleep_interval;
162  f64 due_time;
163  u32 n_left;
164  f64 start_time;
165  vlib_buffer_t *buffer;
166 } ip6_radv_t;
167 
168 typedef struct
169 {
170  u32 next_index;
171  uword node_index;
172  uword type_opaque;
173  uword data;
174  /* Used for nd event notification only */
175  void *data_callback;
176  u32 pid;
177 } pending_resolution_t;
178 
179 
180 typedef struct
181 {
182  /* Hash tables mapping name to opcode. */
183  uword *opcode_by_name;
184 
185  /* lite beer "glean" adjacency handling */
186  mhash_t pending_resolutions_by_address;
187  pending_resolution_t *pending_resolutions;
188 
189  /* Mac address change notification */
190  mhash_t mac_changes_by_address;
191  pending_resolution_t *mac_changes;
192 
193  u32 *neighbor_input_next_index_by_hw_if_index;
194 
195  ip6_neighbor_t *neighbor_pool;
196 
197  mhash_t neighbor_index_by_key;
198 
199  u32 *if_radv_pool_index_by_sw_if_index;
200 
201  ip6_radv_t *if_radv_pool;
202 
203  /* Neighbor attack mitigation */
204  u32 limit_neighbor_cache_size;
205  u32 neighbor_delete_rotor;
206 
207  /* Wildcard nd report publisher */
208  uword wc_ip6_nd_publisher_node;
209  uword wc_ip6_nd_publisher_et;
210 
211  /* Router advertisement report publisher */
212  uword ip6_ra_publisher_node;
213  uword ip6_ra_publisher_et;
214 } ip6_neighbor_main_t;
215 
216 /* ipv6 neighbor discovery - timer/event types */
217 typedef enum
218 {
219  ICMP6_ND_EVENT_INIT,
220 } ip6_icmp_neighbor_discovery_event_type_t;
221 
222 typedef union
223 {
224  u32 add_del_swindex;
225  struct
226  {
227  u32 up_down_swindex;
228  u32 fib_index;
229  } up_down_event;
230 } ip6_icmp_neighbor_discovery_event_data_t;
231 
232 static ip6_neighbor_main_t ip6_neighbor_main;
233 ip6_neighbor_public_main_t ip6_neighbor_public_main;
234 static ip6_address_t ip6a_zero; /* ip6 address 0 */
235 
236 static void wc_nd_signal_report (wc_nd_report_t * r);
237 static void ra_signal_report (ra_report_t * r);
238 
239 ip6_address_t
240 ip6_neighbor_get_link_local_address (u32 sw_if_index)
241 {
242  static ip6_address_t empty_address = { {0} };
243  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
244  ip6_radv_t *radv_info;
245  u32 ri;
246 
247  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
248  if (ri == ~0)
249  {
250  clib_warning ("IPv6 is not enabled for sw_if_index %d", sw_if_index);
251  return empty_address;
252  }
253  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
254  if (radv_info == NULL)
255  {
256  clib_warning ("Internal error");
257  return empty_address;
258  }
259  return radv_info->link_local_address;
260 }
261 
262 /**
263  * @brief publish wildcard arp event
264  * @param sw_if_index The interface on which the ARP entires are acted
265  */
266 static int
267 vnet_nd_wc_publish (u32 sw_if_index, u8 * mac, ip6_address_t * ip6)
268 {
269  wc_nd_report_t r = {
270  .sw_if_index = sw_if_index,
271  .ip6 = *ip6,
272  };
273  memcpy (r.mac, mac, sizeof r.mac);
274 
275  void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
276  vl_api_rpc_call_main_thread (wc_nd_signal_report, (u8 *) & r, sizeof r);
277  return 0;
278 }
279 
280 static void
281 wc_nd_signal_report (wc_nd_report_t * r)
282 {
283  vlib_main_t *vm = vlib_get_main ();
284  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
285  uword ni = nm->wc_ip6_nd_publisher_node;
286  uword et = nm->wc_ip6_nd_publisher_et;
287 
288  if (ni == (uword) ~ 0)
289  return;
290  wc_nd_report_t *q =
291  vlib_process_signal_event_data (vm, ni, et, 1, sizeof *q);
292 
293  *q = *r;
294 }
295 
296 void
297 wc_nd_set_publisher_node (uword node_index, uword event_type)
298 {
299  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
300  nm->wc_ip6_nd_publisher_node = node_index;
301  nm->wc_ip6_nd_publisher_et = event_type;
302 }
303 
304 static int
305 ra_publish (ra_report_t * r)
306 {
307  void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
308  vl_api_rpc_call_main_thread (ra_signal_report, (u8 *) r, sizeof *r);
309  return 0;
310 }
311 
312 static void
313 ra_signal_report (ra_report_t * r)
314 {
315  vlib_main_t *vm = vlib_get_main ();
316  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
317  uword ni = nm->ip6_ra_publisher_node;
318  uword et = nm->ip6_ra_publisher_et;
319 
320  if (ni == (uword) ~ 0)
321  return;
322  ra_report_t *q = vlib_process_signal_event_data (vm, ni, et, 1, sizeof *q);
323 
324  *q = *r;
325 }
326 
327 void
328 ra_set_publisher_node (uword node_index, uword event_type)
329 {
330  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
331  nm->ip6_ra_publisher_node = node_index;
332  nm->ip6_ra_publisher_et = event_type;
333 }
334 
335 static u8 *
336 format_ip6_neighbor_ip6_entry (u8 * s, va_list * va)
337 {
338  vlib_main_t *vm = va_arg (*va, vlib_main_t *);
339  ip6_neighbor_t *n = va_arg (*va, ip6_neighbor_t *);
340  vnet_main_t *vnm = vnet_get_main ();
341  vnet_sw_interface_t *si;
342  u8 *flags = 0;
343 
344  if (!n)
345  return format (s, "%=12s%=25s%=6s%=20s%=40s", "Time", "Address", "Flags",
346  "Link layer", "Interface");
347 
348  if (n->flags & IP6_NEIGHBOR_FLAG_DYNAMIC)
349  flags = format (flags, "D");
350 
351  if (n->flags & IP6_NEIGHBOR_FLAG_STATIC)
352  flags = format (flags, "S");
353 
354  if (n->flags & IP6_NEIGHBOR_FLAG_NO_FIB_ENTRY)
355  flags = format (flags, "N");
356 
357  si = vnet_get_sw_interface (vnm, n->key.sw_if_index);
358  s = format (s, "%=12U%=25U%=6s%=20U%=40U",
359  format_vlib_time, vm, n->time_last_updated,
360  format_ip6_address, &n->key.ip6_address,
361  flags ? (char *) flags : "",
362  format_ethernet_address, n->link_layer_address,
363  format_vnet_sw_interface_name, vnm, si);
364 
365  vec_free (flags);
366  return s;
367 }
368 
369 static void
370 ip6_neighbor_adj_fib_remove (ip6_neighbor_t * n, u32 fib_index)
371 {
372  if (FIB_NODE_INDEX_INVALID != n->fib_entry_index)
373  {
374  if (ip6_address_is_link_local_unicast (&n->key.ip6_address))
375  {
376  ip6_ll_prefix_t pfx = {
377  .ilp_addr = n->key.ip6_address,
378  .ilp_sw_if_index = n->key.sw_if_index,
379  };
380  ip6_ll_table_entry_delete (&pfx);
381  }
382  else
383  {
384  fib_prefix_t pfx = {
385  .fp_len = 128,
386  .fp_proto = FIB_PROTOCOL_IP6,
387  .fp_addr.ip6 = n->key.ip6_address,
388  };
389  fib_table_entry_path_remove (fib_index,
390  &pfx,
391  FIB_SOURCE_ADJ,
392  DPO_PROTO_IP6,
393  &pfx.fp_addr,
394  n->key.sw_if_index, ~0,
395  1, FIB_ROUTE_PATH_FLAG_NONE);
396  }
397  }
398 }
399 
400 typedef struct
401 {
402  u8 is_add;
403  u8 is_static;
404  u8 is_no_fib_entry;
405  u8 link_layer_address[6];
406  u32 sw_if_index;
407  ip6_address_t addr;
408 } ip6_neighbor_set_unset_rpc_args_t;
409 
410 static void ip6_neighbor_set_unset_rpc_callback
411  (ip6_neighbor_set_unset_rpc_args_t * a);
412 
413 static void set_unset_ip6_neighbor_rpc
414  (vlib_main_t * vm,
415  u32 sw_if_index,
416  ip6_address_t * a, u8 * link_layer_address, int is_add, int is_static,
417  int is_no_fib_entry)
418 {
419  ip6_neighbor_set_unset_rpc_args_t args;
420  void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
421 
422  args.sw_if_index = sw_if_index;
423  args.is_add = is_add;
424  args.is_static = is_static;
425  args.is_no_fib_entry = is_no_fib_entry;
426  clib_memcpy (&args.addr, a, sizeof (*a));
427  if (NULL != link_layer_address)
428  clib_memcpy (args.link_layer_address, link_layer_address, 6);
429 
430  vl_api_rpc_call_main_thread (ip6_neighbor_set_unset_rpc_callback,
431  (u8 *) & args, sizeof (args));
432 }
433 
434 static void
435 ip6_nbr_probe (ip_adjacency_t * adj)
436 {
437  icmp6_neighbor_solicitation_header_t *h;
438  vnet_main_t *vnm = vnet_get_main ();
439  ip6_main_t *im = &ip6_main;
440  ip_interface_address_t *ia;
441  ip6_address_t *dst, *src;
442  vnet_hw_interface_t *hi;
443  vnet_sw_interface_t *si;
444  vlib_buffer_t *b;
445  int bogus_length;
446  vlib_main_t *vm;
447  u32 bi = 0;
448 
449  vm = vlib_get_main ();
450 
451  si = vnet_get_sw_interface (vnm, adj->rewrite_header.sw_if_index);
452  dst = &adj->sub_type.nbr.next_hop.ip6;
453 
454  if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
455  {
456  return;
457  }
458  src = ip6_interface_address_matching_destination (im, dst,
459  adj->rewrite_header.
460  sw_if_index, &ia);
461  if (!src)
462  {
463  return;
464  }
465 
466  h = vlib_packet_template_get_packet (vm,
467  &im->discover_neighbor_packet_template,
468  &bi);
469  if (!h)
470  return;
471 
472  hi = vnet_get_sup_hw_interface (vnm, adj->rewrite_header.sw_if_index);
473 
474  h->ip.dst_address.as_u8[13] = dst->as_u8[13];
475  h->ip.dst_address.as_u8[14] = dst->as_u8[14];
476  h->ip.dst_address.as_u8[15] = dst->as_u8[15];
477  h->ip.src_address = src[0];
478  h->neighbor.target_address = dst[0];
479 
480  clib_memcpy (h->link_layer_option.ethernet_address,
481  hi->hw_address, vec_len (hi->hw_address));
482 
483  h->neighbor.icmp.checksum =
484  ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h->ip, &bogus_length);
485  ASSERT (bogus_length == 0);
486 
487  b = vlib_get_buffer (vm, bi);
488  vnet_buffer (b)->sw_if_index[VLIB_RX] =
489  vnet_buffer (b)->sw_if_index[VLIB_TX] = adj->rewrite_header.sw_if_index;
490 
491  /* Add encapsulation string for software interface (e.g. ethernet header). */
492  vnet_rewrite_one_header (adj[0], h, sizeof (ethernet_header_t));
493  vlib_buffer_advance (b, -adj->rewrite_header.data_bytes);
494 
495  {
496  vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index);
497  u32 *to_next = vlib_frame_vector_args (f);
498  to_next[0] = bi;
499  f->n_vectors = 1;
500  vlib_put_frame_to_node (vm, hi->output_node_index, f);
501  }
502 }
503 
504 static void
505 ip6_nd_mk_complete (adj_index_t ai, ip6_neighbor_t * nbr)
506 {
507  adj_nbr_update_rewrite (ai, ADJ_NBR_REWRITE_FLAG_COMPLETE,
508  ethernet_build_rewrite (vnet_get_main (),
509  nbr->key.sw_if_index,
510  adj_get_link_type (ai),
511  nbr->link_layer_address));
512 }
513 
514 static void
515 ip6_nd_mk_incomplete (adj_index_t ai)
516 {
517  ip_adjacency_t *adj = adj_get (ai);
518 
519  adj_nbr_update_rewrite (ai,
520  ADJ_NBR_REWRITE_FLAG_INCOMPLETE,
521  ethernet_build_rewrite (vnet_get_main (),
522  adj->rewrite_header.
523  sw_if_index,
524  adj_get_link_type (ai),
525  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
526 }
527 
528 #define IP6_NBR_MK_KEY(k, sw_if_index, addr) \
529 { \
530  k.sw_if_index = sw_if_index; \
531  k.ip6_address = *addr; \
532  k.pad = 0; \
533 }
534 
535 static ip6_neighbor_t *
536 ip6_nd_find (u32 sw_if_index, const ip6_address_t * addr)
537 {
538  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
539  ip6_neighbor_t *n = NULL;
540  ip6_neighbor_key_t k;
541  uword *p;
542 
543  IP6_NBR_MK_KEY (k, sw_if_index, addr);
544 
545  p = mhash_get (&nm->neighbor_index_by_key, &k);
546  if (p)
547  {
548  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
549  }
550 
551  return (n);
552 }
553 
554 static adj_walk_rc_t
555 ip6_nd_mk_complete_walk (adj_index_t ai, void *ctx)
556 {
557  ip6_neighbor_t *nbr = ctx;
558 
559  ip6_nd_mk_complete (ai, nbr);
560 
561  return (ADJ_WALK_RC_CONTINUE);
562 }
563 
564 static adj_walk_rc_t
565 ip6_nd_mk_incomplete_walk (adj_index_t ai, void *ctx)
566 {
567  ip6_nd_mk_incomplete (ai);
568 
569  return (ADJ_WALK_RC_CONTINUE);
570 }
571 
572 static clib_error_t *
573 ip6_neighbor_sw_interface_up_down (vnet_main_t * vnm,
574  u32 sw_if_index, u32 flags)
575 {
576  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
577  ip6_neighbor_t *n;
578  u32 i, *to_delete = 0;
579 
580  /* *INDENT-OFF* */
581  pool_foreach (n, nm->neighbor_pool,
582  ({
583  if (n->key.sw_if_index == sw_if_index)
584  vec_add1 (to_delete, n - nm->neighbor_pool);
585  }));
586  /* *INDENT-ON* */
587 
588  if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
589  {
590  for (i = 0; i < vec_len (to_delete); i++)
591  {
592  n = pool_elt_at_index (nm->neighbor_pool, to_delete[i]);
593  adj_nbr_walk_nh6 (n->key.sw_if_index, &n->key.ip6_address,
594  ip6_nd_mk_complete_walk, n);
595  }
596  }
597  else
598  {
599  for (i = 0; i < vec_len (to_delete); i++)
600  {
601  n = pool_elt_at_index (nm->neighbor_pool, to_delete[i]);
602  adj_nbr_walk_nh6 (n->key.sw_if_index, &n->key.ip6_address,
603  ip6_nd_mk_incomplete_walk, NULL);
604  if (n->flags & IP6_NEIGHBOR_FLAG_STATIC)
605  continue;
606  ip6_neighbor_adj_fib_remove (n,
607  ip6_fib_table_get_index_for_sw_if_index
608  (n->key.sw_if_index));
609  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
610  pool_put (nm->neighbor_pool, n);
611  }
612  }
613 
614  vec_free (to_delete);
615  return 0;
616 }
617 
618 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (ip6_neighbor_sw_interface_up_down);
619 
620 void
621 ip6_ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
622 {
623  ip6_neighbor_t *nbr;
624  ip_adjacency_t *adj;
625 
626  adj = adj_get (ai);
627 
628  nbr = ip6_nd_find (sw_if_index, &adj->sub_type.nbr.next_hop.ip6);
629 
630  switch (adj->lookup_next_index)
631  {
632  case IP_LOOKUP_NEXT_GLEAN:
633  adj_glean_update_rewrite (ai);
634  break;
635  case IP_LOOKUP_NEXT_ARP:
636  if (NULL != nbr)
637  {
638  adj_nbr_walk_nh6 (sw_if_index, &nbr->key.ip6_address,
639  ip6_nd_mk_complete_walk, nbr);
640  }
641  else
642  {
643  /*
644  * no matching ND entry.
645  * construct the rewrite required to for an ND packet, and stick
646  * that in the adj's pipe to smoke.
647  */
648  adj_nbr_update_rewrite (ai,
649  ADJ_NBR_REWRITE_FLAG_INCOMPLETE,
650  ethernet_build_rewrite (vnm,
651  sw_if_index,
652  VNET_LINK_IP6,
653  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
654 
655  /*
656  * since the FIB has added this adj for a route, it makes sense it may
657  * want to forward traffic sometime soon. Let's send a speculative ND.
658  * just one. If we were to do periodically that wouldn't be bad either,
659  * but that's more code than i'm prepared to write at this time for
660  * relatively little reward.
661  */
662  ip6_nbr_probe (adj);
663  }
664  break;
665  case IP_LOOKUP_NEXT_MCAST:
666  {
667  /*
668  * Construct a partial rewrite from the known ethernet mcast dest MAC
669  */
670  u8 *rewrite;
671  u8 offset;
672 
673  rewrite = ethernet_build_rewrite (vnm,
674  sw_if_index,
675  adj->ia_link,
676  ethernet_ip6_mcast_dst_addr ());
677 
678  /*
679  * Complete the remaining fields of the adj's rewrite to direct the
680  * complete of the rewrite at switch time by copying in the IP
681  * dst address's bytes.
682  * Ofset is 2 bytes into the desintation address.
683  */
684  offset = vec_len (rewrite) - 2;
685  adj_mcast_update_rewrite (ai, rewrite, offset);
686 
687  break;
688  }
689  case IP_LOOKUP_NEXT_DROP:
690  case IP_LOOKUP_NEXT_PUNT:
691  case IP_LOOKUP_NEXT_LOCAL:
692  case IP_LOOKUP_NEXT_REWRITE:
693  case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
694  case IP_LOOKUP_NEXT_MIDCHAIN:
695  case IP_LOOKUP_NEXT_ICMP_ERROR:
696  case IP_LOOKUP_N_NEXT:
697  ASSERT (0);
698  break;
699  }
700 }
701 
702 
703 static void
704 ip6_neighbor_adj_fib_add (ip6_neighbor_t * n, u32 fib_index)
705 {
706  if (ip6_address_is_link_local_unicast (&n->key.ip6_address))
707  {
708  ip6_ll_prefix_t pfx = {
709  .ilp_addr = n->key.ip6_address,
710  .ilp_sw_if_index = n->key.sw_if_index,
711  };
712  n->fib_entry_index =
713  ip6_ll_table_entry_update (&pfx, FIB_ROUTE_PATH_FLAG_NONE);
714  }
715  else
716  {
717  fib_prefix_t pfx = {
718  .fp_len = 128,
719  .fp_proto = FIB_PROTOCOL_IP6,
720  .fp_addr.ip6 = n->key.ip6_address,
721  };
722 
723  n->fib_entry_index =
724  fib_table_entry_path_add (fib_index, &pfx, FIB_SOURCE_ADJ,
725  FIB_ENTRY_FLAG_ATTACHED,
726  DPO_PROTO_IP6, &pfx.fp_addr,
727  n->key.sw_if_index, ~0, 1, NULL,
728  FIB_ROUTE_PATH_FLAG_NONE);
729  }
730 }
731 
732 static ip6_neighbor_t *
733 force_reuse_neighbor_entry (void)
734 {
735  ip6_neighbor_t *n;
736  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
737  u32 count = 0;
738  u32 index = pool_next_index (nm->neighbor_pool, nm->neighbor_delete_rotor);
739  if (index == ~0) /* Try again from elt 0 */
740  index = pool_next_index (nm->neighbor_pool, index);
741 
742  /* Find a non-static random entry to free up for reuse */
743  do
744  {
745  if ((count++ == 100) || (index == ~0))
746  return NULL; /* give up after 100 entries */
747  n = pool_elt_at_index (nm->neighbor_pool, index);
748  nm->neighbor_delete_rotor = index;
749  index = pool_next_index (nm->neighbor_pool, index);
750  }
751  while (n->flags & IP6_NEIGHBOR_FLAG_STATIC);
752 
753  /* Remove ARP entry from its interface and update fib */
754  adj_nbr_walk_nh6 (n->key.sw_if_index,
755  &n->key.ip6_address, ip6_nd_mk_incomplete_walk, NULL);
756  ip6_neighbor_adj_fib_remove
757  (n, ip6_fib_table_get_index_for_sw_if_index (n->key.sw_if_index));
758  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
759 
760  return n;
761 }
762 
763 int
764 vnet_set_ip6_ethernet_neighbor (vlib_main_t * vm,
765  u32 sw_if_index,
766  ip6_address_t * a,
767  u8 * link_layer_address,
768  uword n_bytes_link_layer_address,
769  int is_static, int is_no_fib_entry)
770 {
771  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
772  ip6_neighbor_key_t k;
773  ip6_neighbor_t *n = 0;
774  int make_new_nd_cache_entry = 1;
775  uword *p;
776  u32 next_index;
777  pending_resolution_t *pr, *mc;
778 
779  if (vlib_get_thread_index ())
780  {
781  set_unset_ip6_neighbor_rpc (vm, sw_if_index, a, link_layer_address,
782  1 /* set new neighbor */ , is_static,
783  is_no_fib_entry);
784  return 0;
785  }
786 
787  k.sw_if_index = sw_if_index;
788  k.ip6_address = a[0];
789  k.pad = 0;
790 
791  p = mhash_get (&nm->neighbor_index_by_key, &k);
792  if (p)
793  {
794  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
795  /* Refuse to over-write static neighbor entry. */
796  if (!is_static && (n->flags & IP6_NEIGHBOR_FLAG_STATIC))
797  return -2;
798  make_new_nd_cache_entry = 0;
799  }
800 
801  if (make_new_nd_cache_entry)
802  {
803  if (nm->limit_neighbor_cache_size &&
804  pool_elts (nm->neighbor_pool) >= nm->limit_neighbor_cache_size)
805  {
806  n = force_reuse_neighbor_entry ();
807  if (NULL == n)
808  return -2;
809  }
810  else
811  pool_get (nm->neighbor_pool, n);
812 
813  mhash_set (&nm->neighbor_index_by_key, &k, n - nm->neighbor_pool,
814  /* old value */ 0);
815  n->key = k;
816  n->fib_entry_index = FIB_NODE_INDEX_INVALID;
817 
818  clib_memcpy (n->link_layer_address,
819  link_layer_address, n_bytes_link_layer_address);
820 
821  /*
822  * create the adj-fib. the entry in the FIB table for and to the peer.
823  */
824  if (!is_no_fib_entry)
825  {
826  ip6_neighbor_adj_fib_add
827  (n, ip6_fib_table_get_index_for_sw_if_index (n->key.sw_if_index));
828  }
829  else
830  {
831  n->flags |= IP6_NEIGHBOR_FLAG_NO_FIB_ENTRY;
832  }
833  }
834  else
835  {
836  /*
837  * prevent a DoS attack from the data-plane that
838  * spams us with no-op updates to the MAC address
839  */
840  if (0 == memcmp (n->link_layer_address,
841  link_layer_address, n_bytes_link_layer_address))
842  {
843  n->time_last_updated = vlib_time_now (vm);
844  goto check_customers;
845  }
846 
847  clib_memcpy (n->link_layer_address,
848  link_layer_address, n_bytes_link_layer_address);
849  }
850 
851  /* Update time stamp and flags. */
852  n->time_last_updated = vlib_time_now (vm);
853  if (is_static)
854  {
855  n->flags |= IP6_NEIGHBOR_FLAG_STATIC;
856  n->flags &= ~IP6_NEIGHBOR_FLAG_DYNAMIC;
857  }
858  else
859  {
860  n->flags |= IP6_NEIGHBOR_FLAG_DYNAMIC;
861  n->flags &= ~IP6_NEIGHBOR_FLAG_STATIC;
862  }
863 
864  adj_nbr_walk_nh6 (sw_if_index,
865  &n->key.ip6_address, ip6_nd_mk_complete_walk, n);
866 
867 check_customers:
868  /* Customer(s) waiting for this address to be resolved? */
869  p = mhash_get (&nm->pending_resolutions_by_address, a);
870  if (p)
871  {
872  next_index = p[0];
873 
874  while (next_index != (u32) ~ 0)
875  {
876  pr = pool_elt_at_index (nm->pending_resolutions, next_index);
877  vlib_process_signal_event (vm, pr->node_index,
878  pr->type_opaque, pr->data);
879  next_index = pr->next_index;
880  pool_put (nm->pending_resolutions, pr);
881  }
882 
883  mhash_unset (&nm->pending_resolutions_by_address, a, 0);
884  }
885 
886  /* Customer(s) requesting ND event for this address? */
887  p = mhash_get (&nm->mac_changes_by_address, a);
888  if (p)
889  {
890  next_index = p[0];
891 
892  while (next_index != (u32) ~ 0)
893  {
894  int (*fp) (u32, u8 *, u32, ip6_address_t *);
895  int rv = 1;
896  mc = pool_elt_at_index (nm->mac_changes, next_index);
897  fp = mc->data_callback;
898 
899  /* Call the user's data callback, return 1 to suppress dup events */
900  if (fp)
901  rv =
902  (*fp) (mc->data, link_layer_address, sw_if_index, &ip6a_zero);
903  /*
904  * Signal the resolver process, as long as the user
905  * says they want to be notified
906  */
907  if (rv == 0)
908  vlib_process_signal_event (vm, mc->node_index,
909  mc->type_opaque, mc->data);
910  next_index = mc->next_index;
911  }
912  }
913 
914  return 0;
915 }
916 
917 int
918 vnet_unset_ip6_ethernet_neighbor (vlib_main_t * vm,
919  u32 sw_if_index,
920  ip6_address_t * a,
921  u8 * link_layer_address,
922  uword n_bytes_link_layer_address)
923 {
924  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
925  ip6_neighbor_key_t k;
926  ip6_neighbor_t *n;
927  uword *p;
928  int rv = 0;
929 
930  if (vlib_get_thread_index ())
931  {
932  set_unset_ip6_neighbor_rpc (vm, sw_if_index, a, link_layer_address,
933  0 /* unset */ , 0, 0);
934  return 0;
935  }
936 
937  k.sw_if_index = sw_if_index;
938  k.ip6_address = a[0];
939  k.pad = 0;
940 
941  p = mhash_get (&nm->neighbor_index_by_key, &k);
942  if (p == 0)
943  {
944  rv = -1;
945  goto out;
946  }
947 
948  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
949 
950  adj_nbr_walk_nh6 (sw_if_index,
951  &n->key.ip6_address, ip6_nd_mk_incomplete_walk, NULL);
952  ip6_neighbor_adj_fib_remove
953  (n, ip6_fib_table_get_index_for_sw_if_index (sw_if_index));
954 
955  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
956  pool_put (nm->neighbor_pool, n);
957 
958 out:
959  return rv;
960 }
961 
962 static void ip6_neighbor_set_unset_rpc_callback
963  (ip6_neighbor_set_unset_rpc_args_t * a)
964 {
965  vlib_main_t *vm = vlib_get_main ();
966  if (a->is_add)
967  vnet_set_ip6_ethernet_neighbor (vm, a->sw_if_index, &a->addr,
968  a->link_layer_address, 6, a->is_static,
969  a->is_no_fib_entry);
970  else
971  vnet_unset_ip6_ethernet_neighbor (vm, a->sw_if_index, &a->addr,
972  a->link_layer_address, 6);
973 }
974 
975 static int
976 ip6_neighbor_sort (void *a1, void *a2)
977 {
978  vnet_main_t *vnm = vnet_get_main ();
979  ip6_neighbor_t *n1 = a1, *n2 = a2;
980  int cmp;
981  cmp = vnet_sw_interface_compare (vnm, n1->key.sw_if_index,
982  n2->key.sw_if_index);
983  if (!cmp)
984  cmp = ip6_address_compare (&n1->key.ip6_address, &n2->key.ip6_address);
985  return cmp;
986 }
987 
988 ip6_neighbor_t *
989 ip6_neighbors_pool (void)
990 {
991  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
992  return nm->neighbor_pool;
993 }
994 
995 ip6_neighbor_t *
996 ip6_neighbors_entries (u32 sw_if_index)
997 {
998  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
999  ip6_neighbor_t *n, *ns = 0;
1000 
1001  /* *INDENT-OFF* */
1002  pool_foreach (n, nm->neighbor_pool,
1003  ({
1004  if (sw_if_index != ~0 && n->key.sw_if_index != sw_if_index)
1005  continue;
1006  vec_add1 (ns, n[0]);
1007  }));
1008  /* *INDENT-ON* */
1009 
1010  if (ns)
1011  vec_sort_with_function (ns, ip6_neighbor_sort);
1012  return ns;
1013 }
1014 
1015 static clib_error_t *
1016 show_ip6_neighbors (vlib_main_t * vm,
1017  unformat_input_t * input, vlib_cli_command_t * cmd)
1018 {
1019  vnet_main_t *vnm = vnet_get_main ();
1020  ip6_neighbor_t *n, *ns;
1021  clib_error_t *error = 0;
1022  u32 sw_if_index;
1023 
1024  /* Filter entries by interface if given. */
1025  sw_if_index = ~0;
1026  (void) unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index);
1027 
1028  ns = ip6_neighbors_entries (sw_if_index);
1029  if (ns)
1030  {
1031  vlib_cli_output (vm, "%U", format_ip6_neighbor_ip6_entry, vm, 0);
1032  vec_foreach (n, ns)
1033  {
1034  vlib_cli_output (vm, "%U", format_ip6_neighbor_ip6_entry, vm, n);
1035  }
1036  vec_free (ns);
1037  }
1038 
1039  return error;
1040 }
1041 
1042 /*?
1043  * This command is used to display the adjacent IPv6 hosts found via
1044  * neighbor discovery. Optionally, limit the output to the specified
1045  * interface.
1046  *
1047  * @cliexpar
1048  * Example of how to display the IPv6 neighbor adjacency table:
1049  * @cliexstart{show ip6 neighbors}
1050  * Time Address Flags Link layer Interface
1051  * 34.0910 ::a:1:1:0:7 02:fe:6a:07:39:6f GigabitEthernet2/0/0
1052  * 173.2916 ::b:5:1:c:2 02:fe:50:62:3a:94 GigabitEthernet2/0/0
1053  * 886.6654 ::1:1:c:0:9 S 02:fe:e4:45:27:5b GigabitEthernet3/0/0
1054  * @cliexend
1055  * Example of how to display the IPv6 neighbor adjacency table for given interface:
1056  * @cliexstart{show ip6 neighbors GigabitEthernet2/0/0}
1057  * Time Address Flags Link layer Interface
1058  * 34.0910 ::a:1:1:0:7 02:fe:6a:07:39:6f GigabitEthernet2/0/0
1059  * 173.2916 ::b:5:1:c:2 02:fe:50:62:3a:94 GigabitEthernet2/0/0
1060  * @cliexend
1061 ?*/
1062 /* *INDENT-OFF* */
1063 VLIB_CLI_COMMAND (show_ip6_neighbors_command, static) = {
1064  .path = "show ip6 neighbors",
1065  .function = show_ip6_neighbors,
1066  .short_help = "show ip6 neighbors [<interface>]",
1067 };
1068 /* *INDENT-ON* */
1069 
1070 static clib_error_t *
1071 set_ip6_neighbor (vlib_main_t * vm,
1072  unformat_input_t * input, vlib_cli_command_t * cmd)
1073 {
1074  vnet_main_t *vnm = vnet_get_main ();
1075  ip6_address_t addr;
1076  u8 mac_address[6];
1077  int addr_valid = 0;
1078  int is_del = 0;
1079  int is_static = 0;
1080  int is_no_fib_entry = 0;
1081  u32 sw_if_index;
1082 
1083  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1084  {
1085  /* intfc, ip6-address, mac-address */
1086  if (unformat (input, "%U %U %U",
1087  unformat_vnet_sw_interface, vnm, &sw_if_index,
1088  unformat_ip6_address, &addr,
1089  unformat_ethernet_address, mac_address))
1090  addr_valid = 1;
1091 
1092  else if (unformat (input, "delete") || unformat (input, "del"))
1093  is_del = 1;
1094  else if (unformat (input, "static"))
1095  is_static = 1;
1096  else if (unformat (input, "no-fib-entry"))
1097  is_no_fib_entry = 1;
1098  else
1099  break;
1100  }
1101 
1102  if (!addr_valid)
1103  return clib_error_return (0, "Missing interface, ip6 or hw address");
1104 
1105  if (!is_del)
1106  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index, &addr,
1107  mac_address, sizeof (mac_address),
1108  is_static, is_no_fib_entry);
1109  else
1110  vnet_unset_ip6_ethernet_neighbor (vm, sw_if_index, &addr,
1111  mac_address, sizeof (mac_address));
1112  return 0;
1113 }
1114 
1115 /*?
1116  * This command is used to manually add an entry to the IPv6 neighbor
1117  * adjacency table. Optionally, the entry can be added as static. It is
1118  * also used to remove an entry from the table. Use the '<em>show ip6
1119  * neighbors</em>' command to display all learned and manually entered entries.
1120  *
1121  * @cliexpar
1122  * Example of how to add a static entry to the IPv6 neighbor adjacency table:
1123  * @cliexcmd{set ip6 neighbor GigabitEthernet2/0/0 ::1:1:c:0:9 02:fe:e4:45:27:5b static}
1124  * Example of how to delete an entry from the IPv6 neighbor adjacency table:
1125  * @cliexcmd{set ip6 neighbor del GigabitEthernet2/0/0 ::1:1:c:0:9 02:fe:e4:45:27:5b}
1126 ?*/
1127 /* *INDENT-OFF* */
1128 VLIB_CLI_COMMAND (set_ip6_neighbor_command, static) =
1129 {
1130  .path = "set ip6 neighbor",
1131  .function = set_ip6_neighbor,
1132  .short_help = "set ip6 neighbor [del] <interface> <ip6-address> <mac-address> [static]",
1133 };
1134 /* *INDENT-ON* */
1135 
1136 typedef enum
1137 {
1138  ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP,
1139  ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY,
1140  ICMP6_NEIGHBOR_SOLICITATION_N_NEXT,
1141 } icmp6_neighbor_solicitation_or_advertisement_next_t;
1142 
1143 static_always_inline uword
1144 icmp6_neighbor_solicitation_or_advertisement (vlib_main_t * vm,
1145  vlib_node_runtime_t * node,
1146  vlib_frame_t * frame,
1147  uword is_solicitation)
1148 {
1149  vnet_main_t *vnm = vnet_get_main ();
1150  ip6_main_t *im = &ip6_main;
1151  uword n_packets = frame->n_vectors;
1152  u32 *from, *to_next;
1153  u32 n_left_from, n_left_to_next, next_index, n_advertisements_sent;
1154  icmp6_neighbor_discovery_option_type_t option_type;
1155  vlib_node_runtime_t *error_node =
1156  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1157  int bogus_length;
1158 
1159  from = vlib_frame_vector_args (frame);
1160  n_left_from = n_packets;
1161  next_index = node->cached_next_index;
1162 
1163  if (node->flags & VLIB_NODE_FLAG_TRACE)
1164  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1165  /* stride */ 1,
1166  sizeof (icmp6_input_trace_t));
1167 
1168  option_type =
1169  (is_solicitation
1170  ? ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address
1171  : ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address);
1172  n_advertisements_sent = 0;
1173 
1174  while (n_left_from > 0)
1175  {
1176  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1177 
1178  while (n_left_from > 0 && n_left_to_next > 0)
1179  {
1180  vlib_buffer_t *p0;
1181  ip6_header_t *ip0;
1182  icmp6_neighbor_solicitation_or_advertisement_header_t *h0;
1183  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *o0;
1184  u32 bi0, options_len0, sw_if_index0, next0, error0;
1185  u32 ip6_sadd_link_local, ip6_sadd_unspecified;
1186  int is_rewrite0;
1187  u32 ni0;
1188 
1189  bi0 = to_next[0] = from[0];
1190 
1191  from += 1;
1192  to_next += 1;
1193  n_left_from -= 1;
1194  n_left_to_next -= 1;
1195 
1196  p0 = vlib_get_buffer (vm, bi0);
1197  ip0 = vlib_buffer_get_current (p0);
1198  h0 = ip6_next_header (ip0);
1199  options_len0 =
1200  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1201 
1202  error0 = ICMP6_ERROR_NONE;
1203  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1204  ip6_sadd_link_local =
1205  ip6_address_is_link_local_unicast (&ip0->src_address);
1206  ip6_sadd_unspecified =
1207  ip6_address_is_unspecified (&ip0->src_address);
1208 
1209  /* Check that source address is unspecified, link-local or else on-link. */
1210  if (!ip6_sadd_unspecified && !ip6_sadd_link_local)
1211  {
1212  u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
1213 
1214  if (ADJ_INDEX_INVALID != src_adj_index0)
1215  {
1216  ip_adjacency_t *adj0 = adj_get (src_adj_index0);
1217 
1218  /* Allow all realistic-looking rewrite adjacencies to pass */
1219  ni0 = adj0->lookup_next_index;
1220  is_rewrite0 = (ni0 >= IP_LOOKUP_NEXT_ARP) &&
1221  (ni0 < IP6_LOOKUP_N_NEXT);
1222 
1223  error0 = ((adj0->rewrite_header.sw_if_index != sw_if_index0
1224  || !is_rewrite0)
1225  ?
1226  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_NOT_ON_LINK
1227  : error0);
1228  }
1229  else
1230  {
1231  error0 =
1232  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_NOT_ON_LINK;
1233  }
1234  }
1235 
1236  o0 = (void *) (h0 + 1);
1237  o0 = ((options_len0 == 8 && o0->header.type == option_type
1238  && o0->header.n_data_u64s == 1) ? o0 : 0);
1239 
1240  /* If src address unspecified or link local, donot learn neighbor MAC */
1241  if (PREDICT_TRUE (error0 == ICMP6_ERROR_NONE && o0 != 0 &&
1242  !ip6_sadd_unspecified))
1243  {
1244  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index0,
1245  is_solicitation ?
1246  &ip0->src_address :
1247  &h0->target_address,
1248  o0->ethernet_address,
1249  sizeof (o0->ethernet_address),
1250  0, 0);
1251  }
1252 
1253  if (is_solicitation && error0 == ICMP6_ERROR_NONE)
1254  {
1255  /* Check that target address is local to this router. */
1256  fib_node_index_t fei;
1257  u32 fib_index;
1258 
1259  fib_index =
1260  ip6_fib_table_get_index_for_sw_if_index (sw_if_index0);
1261 
1262  if (~0 == fib_index)
1263  {
1264  error0 = ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1265  }
1266  else
1267  {
1268  if (ip6_address_is_link_local_unicast (&h0->target_address))
1269  {
1270  fei = ip6_fib_table_lookup_exact_match
1271  (ip6_ll_fib_get (sw_if_index0),
1272  &h0->target_address, 128);
1273  }
1274  else
1275  {
1276  fei = ip6_fib_table_lookup_exact_match (fib_index,
1277  &h0->target_address,
1278  128);
1279  }
1280 
1281  if (FIB_NODE_INDEX_INVALID == fei)
1282  {
1283  /* The target address is not in the FIB */
1284  error0 =
1285  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1286  }
1287  else
1288  {
1289  if (FIB_ENTRY_FLAG_LOCAL &
1290  fib_entry_get_flags_for_source (fei,
1291  FIB_SOURCE_INTERFACE))
1292  {
1293  /* It's an address that belongs to one of our interfaces
1294  * that's good. */
1295  }
1296  else
1297  if (fib_entry_is_sourced
1298  (fei, FIB_SOURCE_IP6_ND_PROXY) ||
1299  fib_entry_is_sourced (fei, FIB_SOURCE_IP6_ND))
1300  {
1301  /* The address was added by IPv6 Proxy ND config.
1302  * We should only respond to these if the NS arrived on
1303  * the link that has a matching covering prefix */
1304  }
1305  else
1306  {
1307  error0 =
1308  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1309  }
1310  }
1311  }
1312  }
1313 
1314  if (is_solicitation)
1315  next0 = (error0 != ICMP6_ERROR_NONE
1316  ? ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP
1317  : ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY);
1318  else
1319  {
1320  next0 = 0;
1321  error0 = error0 == ICMP6_ERROR_NONE ?
1322  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_RX : error0;
1323  }
1324 
1325  if (is_solicitation && error0 == ICMP6_ERROR_NONE)
1326  {
1327  vnet_sw_interface_t *sw_if0;
1328  ethernet_interface_t *eth_if0;
1329  ethernet_header_t *eth0;
1330 
1331  /* dst address is either source address or the all-nodes mcast addr */
1332  if (!ip6_sadd_unspecified)
1333  ip0->dst_address = ip0->src_address;
1334  else
1335  ip6_set_reserved_multicast_address (&ip0->dst_address,
1336  IP6_MULTICAST_SCOPE_link_local,
1337  IP6_MULTICAST_GROUP_ID_all_hosts);
1338 
1339  ip0->src_address = h0->target_address;
1340  ip0->hop_limit = 255;
1341  h0->icmp.type = ICMP6_neighbor_advertisement;
1342 
1343  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1344  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1345  eth_if0 =
1346  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1347  if (eth_if0 && o0)
1348  {
1349  clib_memcpy (o0->ethernet_address, eth_if0->address, 6);
1350  o0->header.type =
1351  ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
1352  }
1353 
1354  h0->advertisement_flags = clib_host_to_net_u32
1355  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
1356  | ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
1357 
1358  h0->icmp.checksum = 0;
1359  h0->icmp.checksum =
1360  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0,
1361  &bogus_length);
1362  ASSERT (bogus_length == 0);
1363 
1364  /* Reuse current MAC header, copy SMAC to DMAC and
1365  * interface MAC to SMAC */
1366  vlib_buffer_advance (p0, -ethernet_buffer_header_size (p0));
1367  eth0 = vlib_buffer_get_current (p0);
1368  clib_memcpy (eth0->dst_address, eth0->src_address, 6);
1369  if (eth_if0)
1370  clib_memcpy (eth0->src_address, eth_if0->address, 6);
1371 
1372  /* Setup input and output sw_if_index for packet */
1373  ASSERT (vnet_buffer (p0)->sw_if_index[VLIB_RX] == sw_if_index0);
1374  vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0;
1375  vnet_buffer (p0)->sw_if_index[VLIB_RX] =
1376  vnet_main.local_interface_sw_if_index;
1377 
1378  n_advertisements_sent++;
1379  }
1380 
1381  p0->error = error_node->errors[error0];
1382 
1383  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1384  to_next, n_left_to_next,
1385  bi0, next0);
1386  }
1387 
1388  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1389  }
1390 
1391  /* Account for advertisements sent. */
1392  vlib_error_count (vm, error_node->node_index,
1393  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_TX,
1394  n_advertisements_sent);
1395 
1396  return frame->n_vectors;
1397 }
1398 
1399 /* for "syslogging" - use elog for now */
1400 #define foreach_log_level \
1401  _ (DEBUG, "DEBUG") \
1402  _ (INFO, "INFORMATION") \
1403  _ (NOTICE, "NOTICE") \
1404  _ (WARNING, "WARNING") \
1405  _ (ERR, "ERROR") \
1406  _ (CRIT, "CRITICAL") \
1407  _ (ALERT, "ALERT") \
1408  _ (EMERG, "EMERGENCY")
1409 
1410 typedef enum
1411 {
1412 #define _(f,s) LOG_##f,
1413  foreach_log_level
1414 #undef _
1415 } log_level_t;
1416 
1417 static char *log_level_strings[] = {
1418 #define _(f,s) s,
1419  foreach_log_level
1420 #undef _
1421 };
1422 
1423 static int logmask = 1 << LOG_DEBUG;
1424 
1425 static void
1426 ip6_neighbor_syslog (vlib_main_t * vm, int priority, char *fmt, ...)
1427 {
1428  /* just use elog for now */
1429  u8 *what;
1430  va_list va;
1431 
1432  if ((priority > LOG_EMERG) || !(logmask & (1 << priority)))
1433  return;
1434 
1435  va_start (va, fmt);
1436  if (fmt)
1437  {
1438  what = va_format (0, fmt, &va);
1439 
1440  ELOG_TYPE_DECLARE (e) =
1441  {
1442  .format = "ip6 nd: (%s): %s",.format_args = "T4T4",};
1443  struct
1444  {
1445  u32 s[2];
1446  } *ed;
1447  ed = ELOG_DATA (&vm->elog_main, e);
1448  ed->s[0] = elog_string (&vm->elog_main, log_level_strings[priority]);
1449  ed->s[1] = elog_string (&vm->elog_main, (char *) what);
1450  }
1451  va_end (va);
1452  return;
1453 }
1454 
1455 clib_error_t *
1456 call_ip6_neighbor_callbacks (void *data,
1457  _vnet_ip6_neighbor_function_list_elt_t * elt)
1458 {
1459  clib_error_t *error = 0;
1460 
1461  while (elt)
1462  {
1463  error = elt->fp (data);
1464  if (error)
1465  return error;
1466  elt = elt->next_ip6_neighbor_function;
1467  }
1468 
1469  return error;
1470 }
1471 
1472 /* ipv6 neighbor discovery - router advertisements */
1473 typedef enum
1474 {
1475  ICMP6_ROUTER_SOLICITATION_NEXT_DROP,
1476  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW,
1477  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX,
1478  ICMP6_ROUTER_SOLICITATION_N_NEXT,
1479 } icmp6_router_solicitation_or_advertisement_next_t;
1480 
1481 static_always_inline uword
1482 icmp6_router_solicitation (vlib_main_t * vm,
1483  vlib_node_runtime_t * node, vlib_frame_t * frame)
1484 {
1485  vnet_main_t *vnm = vnet_get_main ();
1486  ip6_main_t *im = &ip6_main;
1487  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1488  uword n_packets = frame->n_vectors;
1489  u32 *from, *to_next;
1490  u32 n_left_from, n_left_to_next, next_index;
1491  u32 n_advertisements_sent = 0;
1492  int bogus_length;
1493 
1494  icmp6_neighbor_discovery_option_type_t option_type;
1495 
1496  vlib_node_runtime_t *error_node =
1497  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1498 
1499  from = vlib_frame_vector_args (frame);
1500  n_left_from = n_packets;
1501  next_index = node->cached_next_index;
1502 
1503  if (node->flags & VLIB_NODE_FLAG_TRACE)
1504  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1505  /* stride */ 1,
1506  sizeof (icmp6_input_trace_t));
1507 
1508  /* source may append his LL address */
1509  option_type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
1510 
1511  while (n_left_from > 0)
1512  {
1513  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1514 
1515  while (n_left_from > 0 && n_left_to_next > 0)
1516  {
1517  vlib_buffer_t *p0;
1518  ip6_header_t *ip0;
1519  ip6_radv_t *radv_info = 0;
1520 
1521  icmp6_neighbor_discovery_header_t *h0;
1522  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *o0;
1523 
1524  u32 bi0, options_len0, sw_if_index0, next0, error0;
1525  u32 is_solicitation = 1, is_dropped = 0;
1526  u32 is_unspecified, is_link_local;
1527 
1528  bi0 = to_next[0] = from[0];
1529 
1530  from += 1;
1531  to_next += 1;
1532  n_left_from -= 1;
1533  n_left_to_next -= 1;
1534 
1535  p0 = vlib_get_buffer (vm, bi0);
1536  ip0 = vlib_buffer_get_current (p0);
1537  h0 = ip6_next_header (ip0);
1538  options_len0 =
1539  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1540  is_unspecified = ip6_address_is_unspecified (&ip0->src_address);
1541  is_link_local =
1542  ip6_address_is_link_local_unicast (&ip0->src_address);
1543 
1544  error0 = ICMP6_ERROR_NONE;
1545  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1546 
1547  /* check if solicitation (not from nd_timer node) */
1548  if (ip6_address_is_unspecified (&ip0->dst_address))
1549  is_solicitation = 0;
1550 
1551  /* Check that source address is unspecified, link-local or else on-link. */
1552  if (!is_unspecified && !is_link_local)
1553  {
1554  u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
1555 
1556  if (ADJ_INDEX_INVALID != src_adj_index0)
1557  {
1558  ip_adjacency_t *adj0 = adj_get (src_adj_index0);
1559 
1560  error0 = (adj0->rewrite_header.sw_if_index != sw_if_index0
1561  ?
1562  ICMP6_ERROR_ROUTER_SOLICITATION_SOURCE_NOT_ON_LINK
1563  : error0);
1564  }
1565  else
1566  {
1567  error0 = ICMP6_ERROR_ROUTER_SOLICITATION_SOURCE_NOT_ON_LINK;
1568  }
1569  }
1570 
1571  /* check for source LL option and process */
1572  o0 = (void *) (h0 + 1);
1573  o0 = ((options_len0 == 8
1574  && o0->header.type == option_type
1575  && o0->header.n_data_u64s == 1) ? o0 : 0);
1576 
1577  /* if src address unspecified IGNORE any options */
1578  if (PREDICT_TRUE (error0 == ICMP6_ERROR_NONE && o0 != 0 &&
1579  !is_unspecified && !is_link_local))
1580  {
1581  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index0,
1582  &ip0->src_address,
1583  o0->ethernet_address,
1584  sizeof (o0->ethernet_address),
1585  0, 0);
1586  }
1587 
1588  /* default is to drop */
1589  next0 = ICMP6_ROUTER_SOLICITATION_NEXT_DROP;
1590 
1591  if (error0 == ICMP6_ERROR_NONE)
1592  {
1593  vnet_sw_interface_t *sw_if0;
1594  ethernet_interface_t *eth_if0;
1595  u32 adj_index0;
1596 
1597  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1598  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1599  eth_if0 =
1600  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1601 
1602  /* only support ethernet interface type for now */
1603  error0 =
1604  (!eth_if0) ? ICMP6_ERROR_ROUTER_SOLICITATION_UNSUPPORTED_INTF
1605  : error0;
1606 
1607  if (error0 == ICMP6_ERROR_NONE)
1608  {
1609  u32 ri;
1610 
1611  /* adjust the sizeof the buffer to just include the ipv6 header */
1612  p0->current_length -=
1613  (options_len0 +
1614  sizeof (icmp6_neighbor_discovery_header_t));
1615 
1616  /* look up the radv_t information for this interface */
1617  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) >
1618  sw_if_index0)
1619  {
1620  ri =
1621  nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
1622 
1623  if (ri != ~0)
1624  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
1625  }
1626 
1627  error0 =
1628  ((!radv_info) ?
1629  ICMP6_ERROR_ROUTER_SOLICITATION_RADV_NOT_CONFIG :
1630  error0);
1631 
1632  if (error0 == ICMP6_ERROR_NONE)
1633  {
1634  f64 now = vlib_time_now (vm);
1635 
1636  /* for solicited adverts - need to rate limit */
1637  if (is_solicitation)
1638  {
1639  if (0 != radv_info->last_radv_time &&
1640  (now - radv_info->last_radv_time) <
1641  MIN_DELAY_BETWEEN_RAS)
1642  is_dropped = 1;
1643  else
1644  radv_info->last_radv_time = now;
1645  }
1646 
1647  /* send now */
1648  icmp6_router_advertisement_header_t rh;
1649 
1650  rh.icmp.type = ICMP6_router_advertisement;
1651  rh.icmp.code = 0;
1652  rh.icmp.checksum = 0;
1653 
1654  rh.current_hop_limit = radv_info->curr_hop_limit;
1655  rh.router_lifetime_in_sec =
1656  clib_host_to_net_u16
1657  (radv_info->adv_router_lifetime_in_sec);
1658  rh.
1659  time_in_msec_between_retransmitted_neighbor_solicitations
1660  =
1661  clib_host_to_net_u32 (radv_info->
1662  adv_time_in_msec_between_retransmitted_neighbor_solicitations);
1663  rh.neighbor_reachable_time_in_msec =
1664  clib_host_to_net_u32 (radv_info->
1665  adv_neighbor_reachable_time_in_msec);
1666 
1667  rh.flags =
1668  (radv_info->adv_managed_flag) ?
1669  ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP :
1670  0;
1671  rh.flags |=
1672  ((radv_info->adv_other_flag) ?
1673  ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP :
1674  0);
1675 
1676 
1677  u16 payload_length =
1678  sizeof (icmp6_router_advertisement_header_t);
1679 
1680  vlib_buffer_add_data (vm,
1681  vlib_buffer_get_free_list_index
1682  (p0), bi0, (void *) &rh,
1683  sizeof
1684  (icmp6_router_advertisement_header_t));
1685 
1686  if (radv_info->adv_link_layer_address)
1687  {
1688  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
1689  h;
1690 
1691  h.header.type =
1692  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
1693  h.header.n_data_u64s = 1;
1694 
1695  /* copy ll address */
1696  clib_memcpy (&h.ethernet_address[0],
1697  eth_if0->address, 6);
1698 
1699  vlib_buffer_add_data (vm,
1700  vlib_buffer_get_free_list_index
1701  (p0), bi0, (void *) &h,
1702  sizeof
1703  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t));
1704 
1705  payload_length +=
1706  sizeof
1707  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t);
1708  }
1709 
1710  /* add MTU option */
1711  if (radv_info->adv_link_mtu)
1712  {
1713  icmp6_neighbor_discovery_mtu_option_t h;
1714 
1715  h.unused = 0;
1716  h.mtu =
1717  clib_host_to_net_u32 (radv_info->adv_link_mtu);
1718  h.header.type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_mtu;
1719  h.header.n_data_u64s = 1;
1720 
1721  payload_length +=
1722  sizeof (icmp6_neighbor_discovery_mtu_option_t);
1723 
1724  vlib_buffer_add_data (vm,
1725  vlib_buffer_get_free_list_index
1726  (p0), bi0, (void *) &h,
1727  sizeof
1728  (icmp6_neighbor_discovery_mtu_option_t));
1729  }
1730 
1731  /* add advertised prefix options */
1732  ip6_radv_prefix_t *pr_info;
1733 
1734  /* *INDENT-OFF* */
1735  pool_foreach (pr_info, radv_info->adv_prefixes_pool,
1736  ({
1737  if(pr_info->enabled &&
1738  (!pr_info->decrement_lifetime_flag
1739  || (pr_info->pref_lifetime_expires >0)))
1740  {
1741  /* advertise this prefix */
1742  icmp6_neighbor_discovery_prefix_information_option_t h;
1743 
1744  h.header.type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_prefix_information;
1745  h.header.n_data_u64s = (sizeof(icmp6_neighbor_discovery_prefix_information_option_t) >> 3);
1746 
1747  h.dst_address_length = pr_info->prefix_len;
1748 
1749  h.flags = (pr_info->adv_on_link_flag) ? ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_FLAG_ON_LINK : 0;
1750  h.flags |= (pr_info->adv_autonomous_flag) ? ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_AUTO : 0;
1751 
1752  if(radv_info->cease_radv && pr_info->deprecated_prefix_flag)
1753  {
1754  h.valid_time = clib_host_to_net_u32(MIN_ADV_VALID_LIFETIME);
1755  h.preferred_time = 0;
1756  }
1757  else
1758  {
1759  if(pr_info->decrement_lifetime_flag)
1760  {
1761  pr_info->adv_valid_lifetime_in_secs = ((pr_info->valid_lifetime_expires > now)) ?
1762  (pr_info->valid_lifetime_expires - now) : 0;
1763 
1764  pr_info->adv_pref_lifetime_in_secs = ((pr_info->pref_lifetime_expires > now)) ?
1765  (pr_info->pref_lifetime_expires - now) : 0;
1766  }
1767 
1768  h.valid_time = clib_host_to_net_u32(pr_info->adv_valid_lifetime_in_secs);
1769  h.preferred_time = clib_host_to_net_u32(pr_info->adv_pref_lifetime_in_secs) ;
1770  }
1771  h.unused = 0;
1772 
1773  clib_memcpy(&h.dst_address, &pr_info->prefix, sizeof(ip6_address_t));
1774 
1775  payload_length += sizeof( icmp6_neighbor_discovery_prefix_information_option_t);
1776 
1777  vlib_buffer_add_data (vm,
1778  vlib_buffer_get_free_list_index (p0),
1779  bi0,
1780  (void *)&h, sizeof(icmp6_neighbor_discovery_prefix_information_option_t));
1781 
1782  }
1783  }));
1784  /* *INDENT-ON* */
1785 
1786  /* add additional options before here */
1787 
1788  /* finish building the router advertisement... */
1789  if (!is_unspecified && radv_info->send_unicast)
1790  {
1791  ip0->dst_address = ip0->src_address;
1792  }
1793  else
1794  {
1795  /* target address is all-nodes mcast addr */
1796  ip6_set_reserved_multicast_address
1797  (&ip0->dst_address,
1798  IP6_MULTICAST_SCOPE_link_local,
1799  IP6_MULTICAST_GROUP_ID_all_hosts);
1800  }
1801 
1802  /* source address MUST be the link-local address */
1803  ip0->src_address = radv_info->link_local_address;
1804 
1805  ip0->hop_limit = 255;
1806  ip0->payload_length =
1807  clib_host_to_net_u16 (payload_length);
1808 
1809  icmp6_router_advertisement_header_t *rh0 =
1810  (icmp6_router_advertisement_header_t *) (ip0 + 1);
1811  rh0->icmp.checksum =
1812  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0,
1813  &bogus_length);
1814  ASSERT (bogus_length == 0);
1815 
1816  /* setup output if and adjacency */
1817  vnet_buffer (p0)->sw_if_index[VLIB_RX] =
1818  vnet_main.local_interface_sw_if_index;
1819 
1820  if (is_solicitation)
1821  {
1822  ethernet_header_t *eth0;
1823  /* Reuse current MAC header, copy SMAC to DMAC and
1824  * interface MAC to SMAC */
1825  vlib_buffer_reset (p0);
1826  eth0 = vlib_buffer_get_current (p0);
1827  clib_memcpy (eth0->dst_address, eth0->src_address,
1828  6);
1829  clib_memcpy (eth0->src_address, eth_if0->address,
1830  6);
1831  next0 =
1832  is_dropped ? next0 :
1833  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX;
1834  vnet_buffer (p0)->sw_if_index[VLIB_TX] =
1835  sw_if_index0;
1836  }
1837  else
1838  {
1839  adj_index0 = radv_info->mcast_adj_index;
1840  if (adj_index0 == 0)
1841  error0 = ICMP6_ERROR_DST_LOOKUP_MISS;
1842  else
1843  {
1844  next0 =
1845  is_dropped ? next0 :
1846  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW;
1847  vnet_buffer (p0)->ip.adj_index[VLIB_TX] =
1848  adj_index0;
1849  }
1850  }
1851  p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
1852 
1853  radv_info->n_solicitations_dropped += is_dropped;
1854  radv_info->n_solicitations_rcvd += is_solicitation;
1855 
1856  if ((error0 == ICMP6_ERROR_NONE) && !is_dropped)
1857  {
1858  radv_info->n_advertisements_sent++;
1859  n_advertisements_sent++;
1860  }
1861  }
1862  }
1863  }
1864 
1865  p0->error = error_node->errors[error0];
1866 
1867  if (error0 != ICMP6_ERROR_NONE)
1868  vlib_error_count (vm, error_node->node_index, error0, 1);
1869 
1870  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1871  to_next, n_left_to_next,
1872  bi0, next0);
1873 
1874  }
1875 
1876  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1877  }
1878 
1879  /* Account for router advertisements sent. */
1880  vlib_error_count (vm, error_node->node_index,
1881  ICMP6_ERROR_ROUTER_ADVERTISEMENTS_TX,
1882  n_advertisements_sent);
1883 
1884  return frame->n_vectors;
1885 }
1886 
1887  /* validate advertised info for consistancy (see RFC-4861 section 6.2.7) - log any inconsistencies, packet will always be dropped */
1888 static_always_inline uword
1889 icmp6_router_advertisement (vlib_main_t * vm,
1890  vlib_node_runtime_t * node, vlib_frame_t * frame)
1891 {
1892  vnet_main_t *vnm = vnet_get_main ();
1893  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1894  uword n_packets = frame->n_vectors;
1895  u32 *from, *to_next;
1896  u32 n_left_from, n_left_to_next, next_index;
1897  u32 n_advertisements_rcvd = 0;
1898 
1899  vlib_node_runtime_t *error_node =
1900  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1901 
1902  from = vlib_frame_vector_args (frame);
1903  n_left_from = n_packets;
1904  next_index = node->cached_next_index;
1905 
1906  if (node->flags & VLIB_NODE_FLAG_TRACE)
1907  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1908  /* stride */ 1,
1909  sizeof (icmp6_input_trace_t));
1910 
1911  while (n_left_from > 0)
1912  {
1913  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1914 
1915  while (n_left_from > 0 && n_left_to_next > 0)
1916  {
1917  vlib_buffer_t *p0;
1918  ip6_header_t *ip0;
1919  ip6_radv_t *radv_info = 0;
1920  icmp6_router_advertisement_header_t *h0;
1921  u32 bi0, options_len0, sw_if_index0, next0, error0;
1922 
1923  bi0 = to_next[0] = from[0];
1924 
1925  from += 1;
1926  to_next += 1;
1927  n_left_from -= 1;
1928  n_left_to_next -= 1;
1929 
1930  p0 = vlib_get_buffer (vm, bi0);
1931  ip0 = vlib_buffer_get_current (p0);
1932  h0 = ip6_next_header (ip0);
1933  options_len0 =
1934  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1935 
1936  error0 = ICMP6_ERROR_NONE;
1937  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1938 
1939  /* Check that source address is link-local */
1940  error0 = (!ip6_address_is_link_local_unicast (&ip0->src_address)) ?
1941  ICMP6_ERROR_ROUTER_ADVERTISEMENT_SOURCE_NOT_LINK_LOCAL : error0;
1942 
1943  /* default is to drop */
1944  next0 = ICMP6_ROUTER_SOLICITATION_NEXT_DROP;
1945 
1946  n_advertisements_rcvd++;
1947 
1948  if (error0 == ICMP6_ERROR_NONE)
1949  {
1950  vnet_sw_interface_t *sw_if0;
1951  ethernet_interface_t *eth_if0;
1952 
1953  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1954  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1955  eth_if0 =
1956  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1957 
1958  /* only support ethernet interface type for now */
1959  error0 =
1960  (!eth_if0) ? ICMP6_ERROR_ROUTER_SOLICITATION_UNSUPPORTED_INTF
1961  : error0;
1962 
1963  if (error0 == ICMP6_ERROR_NONE)
1964  {
1965  u32 ri;
1966 
1967  /* look up the radv_t information for this interface */
1968  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) >
1969  sw_if_index0)
1970  {
1971  ri =
1972  nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
1973 
1974  if (ri != ~0)
1975  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
1976  }
1977 
1978  error0 =
1979  ((!radv_info) ?
1980  ICMP6_ERROR_ROUTER_SOLICITATION_RADV_NOT_CONFIG :
1981  error0);
1982 
1983  if (error0 == ICMP6_ERROR_NONE)
1984  {
1985  radv_info->keep_sending_rs = 0;
1986 
1987  ra_report_t r;
1988 
1989  r.sw_if_index = sw_if_index0;
1990  memcpy (r.router_address, &ip0->src_address, 16);
1991  r.current_hop_limit = h0->current_hop_limit;
1992  r.flags = h0->flags;
1993  r.router_lifetime_in_sec =
1994  clib_net_to_host_u16 (h0->router_lifetime_in_sec);
1995  r.neighbor_reachable_time_in_msec =
1996  clib_net_to_host_u32
1997  (h0->neighbor_reachable_time_in_msec);
1998  r.time_in_msec_between_retransmitted_neighbor_solicitations = clib_net_to_host_u32 (h0->time_in_msec_between_retransmitted_neighbor_solicitations);
1999  r.prefixes = 0;
2000 
2001  /* validate advertised information */
2002  if ((h0->current_hop_limit && radv_info->curr_hop_limit)
2003  && (h0->current_hop_limit !=
2004  radv_info->curr_hop_limit))
2005  {
2006  ip6_neighbor_syslog (vm, LOG_WARNING,
2007  "our AdvCurHopLimit on %U doesn't agree with %U",
2008  format_vnet_sw_if_index_name,
2009  vnm, sw_if_index0,
2010  format_ip6_address,
2011  &ip0->src_address);
2012  }
2013 
2014  if ((h0->flags &
2015  ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP)
2016  != radv_info->adv_managed_flag)
2017  {
2018  ip6_neighbor_syslog (vm, LOG_WARNING,
2019  "our AdvManagedFlag 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_OTHER_CONFIG_VIA_DHCP)
2028  != radv_info->adv_other_flag)
2029  {
2030  ip6_neighbor_syslog (vm, LOG_WARNING,
2031  "our AdvOtherConfigFlag 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->
2039  time_in_msec_between_retransmitted_neighbor_solicitations
2040  && radv_info->
2041  adv_time_in_msec_between_retransmitted_neighbor_solicitations)
2042  && (h0->
2043  time_in_msec_between_retransmitted_neighbor_solicitations
2044  !=
2045  clib_host_to_net_u32 (radv_info->
2046  adv_time_in_msec_between_retransmitted_neighbor_solicitations)))
2047  {
2048  ip6_neighbor_syslog (vm, LOG_WARNING,
2049  "our AdvRetransTimer on %U doesn't agree with %U",
2050  format_vnet_sw_if_index_name,
2051  vnm, sw_if_index0,
2052  format_ip6_address,
2053  &ip0->src_address);
2054  }
2055 
2056  if ((h0->neighbor_reachable_time_in_msec &&
2057  radv_info->adv_neighbor_reachable_time_in_msec) &&
2058  (h0->neighbor_reachable_time_in_msec !=
2059  clib_host_to_net_u32
2060  (radv_info->adv_neighbor_reachable_time_in_msec)))
2061  {
2062  ip6_neighbor_syslog (vm, LOG_WARNING,
2063  "our AdvReachableTime on %U doesn't agree with %U",
2064  format_vnet_sw_if_index_name,
2065  vnm, sw_if_index0,
2066  format_ip6_address,
2067  &ip0->src_address);
2068  }
2069 
2070  /* check for MTU or prefix options or .. */
2071  u8 *opt_hdr = (u8 *) (h0 + 1);
2072  while (options_len0 > 0)
2073  {
2074  icmp6_neighbor_discovery_option_header_t *o0 =
2075  (icmp6_neighbor_discovery_option_header_t *)
2076  opt_hdr;
2077  int opt_len = o0->n_data_u64s << 3;
2078  icmp6_neighbor_discovery_option_type_t option_type =
2079  o0->type;
2080 
2081  if (options_len0 < 2)
2082  {
2083  ip6_neighbor_syslog (vm, LOG_ERR,
2084  "malformed RA packet on %U from %U",
2085  format_vnet_sw_if_index_name,
2086  vnm, sw_if_index0,
2087  format_ip6_address,
2088  &ip0->src_address);
2089  break;
2090  }
2091 
2092  if (opt_len == 0)
2093  {
2094  ip6_neighbor_syslog (vm, LOG_ERR,
2095  " zero length option in RA on %U from %U",
2096  format_vnet_sw_if_index_name,
2097  vnm, sw_if_index0,
2098  format_ip6_address,
2099  &ip0->src_address);
2100  break;
2101  }
2102  else if (opt_len > options_len0)
2103  {
2104  ip6_neighbor_syslog (vm, LOG_ERR,
2105  "option length in RA packet greater than total length on %U from %U",
2106  format_vnet_sw_if_index_name,
2107  vnm, sw_if_index0,
2108  format_ip6_address,
2109  &ip0->src_address);
2110  break;
2111  }
2112 
2113  options_len0 -= opt_len;
2114  opt_hdr += opt_len;
2115 
2116  switch (option_type)
2117  {
2118  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address:
2119  {
2120  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
2121  * h =
2122  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
2123  *) (o0);
2124 
2125  if (opt_len < sizeof (*h))
2126  break;
2127 
2128  memcpy (r.slla, h->ethernet_address, 6);
2129  }
2130  break;
2131 
2132  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_mtu:
2133  {
2134  icmp6_neighbor_discovery_mtu_option_t *h =
2135  (icmp6_neighbor_discovery_mtu_option_t
2136  *) (o0);
2137 
2138  if (opt_len < sizeof (*h))
2139  break;
2140 
2141  r.mtu = clib_net_to_host_u32 (h->mtu);
2142 
2143  if ((h->mtu && radv_info->adv_link_mtu) &&
2144  (h->mtu !=
2145  clib_host_to_net_u32
2146  (radv_info->adv_link_mtu)))
2147  {
2148  ip6_neighbor_syslog (vm, LOG_WARNING,
2149  "our AdvLinkMTU on %U doesn't agree with %U",
2150  format_vnet_sw_if_index_name,
2151  vnm, sw_if_index0,
2152  format_ip6_address,
2153  &ip0->src_address);
2154  }
2155  }
2156  break;
2157 
2158  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_prefix_information:
2159  {
2160  icmp6_neighbor_discovery_prefix_information_option_t
2161  * h =
2162  (icmp6_neighbor_discovery_prefix_information_option_t
2163  *) (o0);
2164 
2165  /* validate advertised prefix options */
2166  ip6_radv_prefix_t *pr_info;
2167  u32 preferred, valid;
2168 
2169  if (opt_len < sizeof (*h))
2170  break;
2171 
2172  vec_validate (r.prefixes,
2173  vec_len (r.prefixes));
2174  ra_report_prefix_info_t *prefix =
2175  vec_elt_at_index (r.prefixes,
2176  vec_len (r.prefixes) - 1);
2177 
2178  preferred =
2179  clib_net_to_host_u32 (h->preferred_time);
2180  valid = clib_net_to_host_u32 (h->valid_time);
2181 
2182  prefix->preferred_time = preferred;
2183  prefix->valid_time = valid;
2184  prefix->flags = h->flags & 0xc0;
2185  prefix->dst_address_length =
2186  h->dst_address_length;
2187  prefix->dst_address = h->dst_address;
2188 
2189  /* look for matching prefix - if we our advertising it, it better be consistant */
2190  /* *INDENT-OFF* */
2191  pool_foreach (pr_info, radv_info->adv_prefixes_pool,
2192  ({
2193 
2194  ip6_address_t mask;
2195  ip6_address_mask_from_width(&mask, pr_info->prefix_len);
2196 
2197  if(pr_info->enabled &&
2198  (pr_info->prefix_len == h->dst_address_length) &&
2199  ip6_address_is_equal_masked (&pr_info->prefix, &h->dst_address, &mask))
2200  {
2201  /* found it */
2202  if(!pr_info->decrement_lifetime_flag &&
2203  valid != pr_info->adv_valid_lifetime_in_secs)
2204  {
2205  ip6_neighbor_syslog(vm, LOG_WARNING,
2206  "our ADV validlifetime on %U for %U does not agree with %U",
2207  format_vnet_sw_if_index_name, vnm, sw_if_index0,format_ip6_address, &pr_info->prefix,
2208  format_ip6_address, &h->dst_address);
2209  }
2210  if(!pr_info->decrement_lifetime_flag &&
2211  preferred != pr_info->adv_pref_lifetime_in_secs)
2212  {
2213  ip6_neighbor_syslog(vm, LOG_WARNING,
2214  "our ADV preferredlifetime on %U for %U does not agree with %U",
2215  format_vnet_sw_if_index_name, vnm, sw_if_index0,format_ip6_address, &pr_info->prefix,
2216  format_ip6_address, &h->dst_address);
2217  }
2218  }
2219  break;
2220  }));
2221  /* *INDENT-ON* */
2222  break;
2223  }
2224  default:
2225  /* skip this one */
2226  break;
2227  }
2228  }
2229  ra_publish (&r);
2230  }
2231  }
2232  }
2233 
2234  p0->error = error_node->errors[error0];
2235 
2236  if (error0 != ICMP6_ERROR_NONE)
2237  vlib_error_count (vm, error_node->node_index, error0, 1);
2238 
2239  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
2240  to_next, n_left_to_next,
2241  bi0, next0);
2242  }
2243 
2244  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
2245  }
2246 
2247  /* Account for router advertisements received. */
2248  vlib_error_count (vm, error_node->node_index,
2249  ICMP6_ERROR_ROUTER_ADVERTISEMENTS_RX,
2250  n_advertisements_rcvd);
2251 
2252  return frame->n_vectors;
2253 }
2254 
2255 static inline f64
2256 random_f64_from_to (f64 from, f64 to)
2257 {
2258  static u32 seed = 0;
2259  static u8 seed_set = 0;
2260  if (!seed_set)
2261  {
2262  seed = random_default_seed ();
2263  seed_set = 1;
2264  }
2265  return random_f64 (&seed) * (to - from) + from;
2266 }
2267 
2268 static inline u8
2269 get_mac_address (u32 sw_if_index, u8 * address)
2270 {
2271  vnet_main_t *vnm = vnet_get_main ();
2272  vnet_hw_interface_t *hw_if = vnet_get_sup_hw_interface (vnm, sw_if_index);
2273  if (!hw_if->hw_address)
2274  return 1;
2275  clib_memcpy (address, hw_if->hw_address, 6);
2276  return 0;
2277 }
2278 
2279 static inline vlib_buffer_t *
2280 create_buffer_for_rs (vlib_main_t * vm, ip6_radv_t * radv_info)
2281 {
2282  u32 bi0;
2283  vlib_buffer_t *p0;
2284  vlib_buffer_free_list_t *fl;
2285  icmp6_router_solicitation_header_t *rh;
2286  u16 payload_length;
2287  int bogus_length;
2288  u32 sw_if_index;
2289 
2290  sw_if_index = radv_info->sw_if_index;
2291 
2292  if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
2293  {
2294  clib_warning ("buffer allocation failure");
2295  return 0;
2296  }
2297 
2298  p0 = vlib_get_buffer (vm, bi0);
2299  fl = vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
2300  vlib_buffer_init_for_free_list (p0, fl);
2301  VLIB_BUFFER_TRACE_TRAJECTORY_INIT (p0);
2302  p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
2303 
2304  vnet_buffer (p0)->sw_if_index[VLIB_RX] = sw_if_index;
2305  vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index;
2306 
2307  vnet_buffer (p0)->ip.adj_index[VLIB_TX] = radv_info->mcast_adj_index;
2308 
2309  rh = vlib_buffer_get_current (p0);
2310  p0->current_length = sizeof (*rh);
2311 
2312  rh->neighbor.icmp.type = ICMP6_router_solicitation;
2313  rh->neighbor.icmp.code = 0;
2314  rh->neighbor.icmp.checksum = 0;
2315  rh->neighbor.reserved_must_be_zero = 0;
2316 
2317  rh->link_layer_option.header.type =
2318  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
2319  if (0 != get_mac_address (sw_if_index,
2320  rh->link_layer_option.ethernet_address))
2321  {
2322  clib_warning ("interface with sw_if_index %u has no mac address",
2323  sw_if_index);
2324  vlib_buffer_free (vm, &bi0, 1);
2325  return 0;
2326  }
2327  rh->link_layer_option.header.n_data_u64s = 1;
2328 
2329  payload_length = sizeof (rh->neighbor) + sizeof (u64);
2330 
2331  rh->ip.ip_version_traffic_class_and_flow_label =
2332  clib_host_to_net_u32 (0x6 << 28);
2333  rh->ip.payload_length = clib_host_to_net_u16 (payload_length);
2334  rh->ip.protocol = IP_PROTOCOL_ICMP6;
2335  rh->ip.hop_limit = 255;
2336  rh->ip.src_address = radv_info->link_local_address;
2337  /* set address ff02::2 */
2338  rh->ip.dst_address.as_u64[0] = clib_host_to_net_u64 (0xff02L << 48);
2339  rh->ip.dst_address.as_u64[1] = clib_host_to_net_u64 (2);
2340 
2341  rh->neighbor.icmp.checksum = ip6_tcp_udp_icmp_compute_checksum (vm, p0,
2342  &rh->ip,
2343  &bogus_length);
2344 
2345  return p0;
2346 }
2347 
2348 static inline void
2349 stop_sending_rs (vlib_main_t * vm, ip6_radv_t * ra)
2350 {
2351  u32 bi0;
2352 
2353  ra->keep_sending_rs = 0;
2354  if (ra->buffer)
2355  {
2356  bi0 = vlib_get_buffer_index (vm, ra->buffer);
2357  vlib_buffer_free (vm, &bi0, 1);
2358  ra->buffer = 0;
2359  }
2360 }
2361 
2362 static inline bool
2363 check_send_rs (vlib_main_t * vm, ip6_radv_t * radv_info, f64 current_time,
2364  f64 * due_time)
2365 {
2366  vlib_buffer_t *p0;
2367  vlib_frame_t *f;
2368  u32 *to_next;
2369  u32 next_index;
2370  vlib_buffer_t *c0;
2371  u32 ci0;
2372 
2373  icmp6_send_router_solicitation_params_t *params;
2374 
2375  if (!radv_info->keep_sending_rs)
2376  return false;
2377 
2378  params = &radv_info->params;
2379 
2380  if (radv_info->due_time > current_time)
2381  {
2382  *due_time = radv_info->due_time;
2383  return true;
2384  }
2385 
2386  p0 = radv_info->buffer;
2387 
2388  next_index = ip6_rewrite_mcast_node.index;
2389 
2390  c0 = vlib_buffer_copy (vm, p0);
2391  ci0 = vlib_get_buffer_index (vm, c0);
2392 
2393  f = vlib_get_frame_to_node (vm, next_index);
2394  to_next = vlib_frame_vector_args (f);
2395  to_next[0] = ci0;
2396  f->n_vectors = 1;
2397  vlib_put_frame_to_node (vm, next_index, f);
2398 
2399  if (params->mrc != 0 && --radv_info->n_left == 0)
2400  stop_sending_rs (vm, radv_info);
2401  else
2402  {
2403  radv_info->sleep_interval =
2404  (2 + random_f64_from_to (-0.1, 0.1)) * radv_info->sleep_interval;
2405  if (radv_info->sleep_interval > params->mrt)
2406  radv_info->sleep_interval =
2407  (1 + random_f64_from_to (-0.1, 0.1)) * params->mrt;
2408 
2409  radv_info->due_time = current_time + radv_info->sleep_interval;
2410 
2411  if (params->mrd != 0
2412  && current_time > radv_info->start_time + params->mrd)
2413  stop_sending_rs (vm, radv_info);
2414  else
2415  *due_time = radv_info->due_time;
2416  }
2417 
2418  return radv_info->keep_sending_rs;
2419 }
2420 
2421 static uword
2422 send_rs_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
2423  vlib_frame_t * f0)
2424 {
2425  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2426  ip6_radv_t *radv_info;
2427  uword *event_data = 0;
2428  f64 sleep_time = 1e9;
2429  f64 current_time;
2430  f64 due_time;
2431  f64 dt = 0;
2432 
2433  while (true)
2434  {
2435  vlib_process_wait_for_event_or_clock (vm, sleep_time);
2436  vlib_process_get_events (vm, &event_data);
2437  vec_reset_length (event_data);
2438 
2439  current_time = vlib_time_now (vm);
2440  do
2441  {
2442  due_time = current_time + 1e9;
2443  /* *INDENT-OFF* */
2444  pool_foreach (radv_info, nm->if_radv_pool,
2445  ({
2446  if (check_send_rs (vm, radv_info, current_time, &dt)
2447  && (dt < due_time))
2448  due_time = dt;
2449  }));
2450  /* *INDENT-ON* */
2451  current_time = vlib_time_now (vm);
2452  }
2453  while (due_time < current_time);
2454 
2455  sleep_time = due_time - current_time;
2456  }
2457 
2458  return 0;
2459 }
2460 
2461 /* *INDENT-OFF* */
2462 VLIB_REGISTER_NODE (send_rs_process_node) = {
2463  .function = send_rs_process,
2464  .type = VLIB_NODE_TYPE_PROCESS,
2465  .name = "send-rs-process",
2466 };
2467 /* *INDENT-ON* */
2468 
2469 void
2470 icmp6_send_router_solicitation (vlib_main_t * vm, u32 sw_if_index, u8 stop,
2471  icmp6_send_router_solicitation_params_t *
2472  params)
2473 {
2474  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2475  u32 rai;
2476  ip6_radv_t *ra = 0;
2477 
2478  ASSERT (~0 != sw_if_index);
2479 
2480  rai = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2481  ra = pool_elt_at_index (nm->if_radv_pool, rai);
2482 
2483  stop_sending_rs (vm, ra);
2484 
2485  if (!stop)
2486  {
2487  ra->keep_sending_rs = 1;
2488  ra->params = *params;
2489  ra->n_left = params->mrc;
2490  ra->start_time = vlib_time_now (vm);
2491  ra->sleep_interval = (1 + random_f64_from_to (-0.1, 0.1)) * params->irt;
2492  ra->due_time = 0; /* send first packet ASAP */
2493  ra->buffer = create_buffer_for_rs (vm, ra);
2494  if (!ra->buffer)
2495  ra->keep_sending_rs = 0;
2496  else
2497  vlib_process_signal_event (vm, send_rs_process_node.index, 1, 0);
2498  }
2499 }
2500 
2501 /**
2502  * @brief Add a multicast Address to the advertised MLD set
2503  */
2504 static void
2505 ip6_neighbor_add_mld_prefix (ip6_radv_t * radv_info, ip6_address_t * addr)
2506 {
2507  ip6_mldp_group_t *mcast_group_info;
2508  uword *p;
2509 
2510  /* lookup mldp info for this interface */
2511  p = mhash_get (&radv_info->address_to_mldp_index, addr);
2512  mcast_group_info =
2513  p ? pool_elt_at_index (radv_info->mldp_group_pool, p[0]) : 0;
2514 
2515  /* add address */
2516  if (!mcast_group_info)
2517  {
2518  /* add */
2519  u32 mi;
2520  pool_get (radv_info->mldp_group_pool, mcast_group_info);
2521 
2522  mi = mcast_group_info - radv_info->mldp_group_pool;
2523  mhash_set (&radv_info->address_to_mldp_index, addr, mi, /* old_value */
2524  0);
2525 
2526  mcast_group_info->type = 4;
2527  mcast_group_info->mcast_source_address_pool = 0;
2528  mcast_group_info->num_sources = 0;
2529  clib_memcpy (&mcast_group_info->mcast_address, addr,
2530  sizeof (ip6_address_t));
2531  }
2532 }
2533 
2534 /**
2535  * @brief Delete a multicast Address from the advertised MLD set
2536  */
2537 static void
2538 ip6_neighbor_del_mld_prefix (ip6_radv_t * radv_info, ip6_address_t * addr)
2539 {
2540  ip6_mldp_group_t *mcast_group_info;
2541  uword *p;
2542 
2543  p = mhash_get (&radv_info->address_to_mldp_index, &addr);
2544  mcast_group_info =
2545  p ? pool_elt_at_index (radv_info->mldp_group_pool, p[0]) : 0;
2546 
2547  if (mcast_group_info)
2548  {
2549  mhash_unset (&radv_info->address_to_mldp_index, &addr,
2550  /* old_value */ 0);
2551  pool_put (radv_info->mldp_group_pool, mcast_group_info);
2552  }
2553 }
2554 
2555 /**
2556  * @brief Add a multicast Address to the advertised MLD set
2557  */
2558 static void
2559 ip6_neighbor_add_mld_grp (ip6_radv_t * a,
2560  ip6_multicast_address_scope_t scope,
2561  ip6_multicast_link_local_group_id_t group)
2562 {
2563  ip6_address_t addr;
2564 
2565  ip6_set_reserved_multicast_address (&addr, scope, group);
2566 
2567  ip6_neighbor_add_mld_prefix (a, &addr);
2568 }
2569 
2570 /**
2571  * @brief create and initialize router advertisement parameters with default
2572  * values for this intfc
2573  */
2574 u32
2575 ip6_neighbor_sw_interface_add_del (vnet_main_t * vnm,
2576  u32 sw_if_index, u32 is_add)
2577 {
2578  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2579  ip6_radv_t *a = 0;
2580  u32 ri = ~0;
2581  vnet_sw_interface_t *sw_if0;
2582  ethernet_interface_t *eth_if0 = 0;
2583 
2584  /* lookup radv container - ethernet interfaces only */
2585  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
2586  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
2587  eth_if0 = ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
2588 
2589  if (!eth_if0)
2590  return ri;
2591 
2592  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2593  ~0);
2594  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2595 
2596  if (ri != ~0)
2597  {
2598  a = pool_elt_at_index (nm->if_radv_pool, ri);
2599 
2600  if (!is_add)
2601  {
2602  ip6_radv_prefix_t *p;
2603  ip6_mldp_group_t *m;
2604 
2605  /* release the lock on the interface's mcast adj */
2606  adj_unlock (a->mcast_adj_index);
2607 
2608  /* clean up prefix and MDP pools */
2609  /* *INDENT-OFF* */
2610  pool_flush(p, a->adv_prefixes_pool,
2611  ({
2612  mhash_unset (&a->address_to_prefix_index, &p->prefix, 0);
2613  }));
2614  pool_flush (m, a->mldp_group_pool,
2615  ({
2616  mhash_unset (&a->address_to_mldp_index, &m->mcast_address, 0);
2617  }));
2618  /* *INDENT-ON* */
2619 
2620  pool_free (a->mldp_group_pool);
2621  pool_free (a->adv_prefixes_pool);
2622 
2623  mhash_free (&a->address_to_prefix_index);
2624  mhash_free (&a->address_to_mldp_index);
2625 
2626  if (a->keep_sending_rs)
2627  a->keep_sending_rs = 0;
2628 
2629  pool_put (nm->if_radv_pool, a);
2630  nm->if_radv_pool_index_by_sw_if_index[sw_if_index] = ~0;
2631  ri = ~0;
2632  }
2633  }
2634  else
2635  {
2636  if (is_add)
2637  {
2638  pool_get (nm->if_radv_pool, a);
2639 
2640  ri = a - nm->if_radv_pool;
2641  nm->if_radv_pool_index_by_sw_if_index[sw_if_index] = ri;
2642 
2643  /* initialize default values (most of which are zero) */
2644  memset (a, 0, sizeof (a[0]));
2645 
2646  a->sw_if_index = sw_if_index;
2647  a->max_radv_interval = DEF_MAX_RADV_INTERVAL;
2648  a->min_radv_interval = DEF_MIN_RADV_INTERVAL;
2649  a->curr_hop_limit = DEF_CURR_HOP_LIMIT;
2650  a->adv_router_lifetime_in_sec = DEF_DEF_RTR_LIFETIME;
2651 
2652  /* send ll address source address option */
2653  a->adv_link_layer_address = 1;
2654 
2655  a->min_delay_between_radv = MIN_DELAY_BETWEEN_RAS;
2656  a->max_delay_between_radv = MAX_DELAY_BETWEEN_RAS;
2657  a->max_rtr_default_lifetime = MAX_DEF_RTR_LIFETIME;
2658  a->seed = (u32) clib_cpu_time_now ();
2659  (void) random_u32 (&a->seed);
2660  a->randomizer = clib_cpu_time_now ();
2661  (void) random_u64 (&a->randomizer);
2662 
2663  a->initial_adverts_count = MAX_INITIAL_RTR_ADVERTISEMENTS;
2664  a->initial_adverts_sent = a->initial_adverts_count - 1;
2665  a->initial_adverts_interval = MAX_INITIAL_RTR_ADVERT_INTERVAL;
2666 
2667  /* deafult is to send */
2668  a->send_radv = 1;
2669 
2670  /* fill in radv_info for this interface that will be needed later */
2671  a->adv_link_mtu =
2672  vnet_sw_interface_get_mtu (vnm, sw_if_index, VNET_MTU_IP6);
2673 
2674  clib_memcpy (a->link_layer_address, eth_if0->address, 6);
2675 
2676  /* fill in default link-local address (this may be overridden) */
2677  ip6_link_local_address_from_ethernet_address
2678  (&a->link_local_address, eth_if0->address);
2679 
2680  mhash_init (&a->address_to_prefix_index, sizeof (uword),
2681  sizeof (ip6_address_t));
2682  mhash_init (&a->address_to_mldp_index, sizeof (uword),
2683  sizeof (ip6_address_t));
2684 
2685  a->mcast_adj_index = adj_mcast_add_or_lock (FIB_PROTOCOL_IP6,
2686  VNET_LINK_IP6,
2687  sw_if_index);
2688 
2689  a->keep_sending_rs = 0;
2690 
2691  /* add multicast groups we will always be reporting */
2692  ip6_neighbor_add_mld_grp (a,
2693  IP6_MULTICAST_SCOPE_link_local,
2694  IP6_MULTICAST_GROUP_ID_all_hosts);
2695  ip6_neighbor_add_mld_grp (a,
2696  IP6_MULTICAST_SCOPE_link_local,
2697  IP6_MULTICAST_GROUP_ID_all_routers);
2698  ip6_neighbor_add_mld_grp (a,
2699  IP6_MULTICAST_SCOPE_link_local,
2700  IP6_MULTICAST_GROUP_ID_mldv2_routers);
2701  }
2702  }
2703  return ri;
2704 }
2705 
2706 /* send an mldpv2 report */
2707 static void
2708 ip6_neighbor_send_mldpv2_report (u32 sw_if_index)
2709 {
2710  vnet_main_t *vnm = vnet_get_main ();
2711  vlib_main_t *vm = vnm->vlib_main;
2712  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2713  vnet_sw_interface_t *sw_if0;
2714  ethernet_interface_t *eth_if0;
2715  u32 ri;
2716  int bogus_length;
2717 
2718  ip6_radv_t *radv_info;
2719  u16 payload_length;
2720  vlib_buffer_t *b0;
2721  ip6_header_t *ip0;
2722  u32 *to_next;
2723  vlib_frame_t *f;
2724  u32 bo0;
2725  u32 n_to_alloc = 1;
2726  u32 n_allocated;
2727 
2728  icmp6_multicast_listener_report_header_t *rh0;
2729  icmp6_multicast_listener_report_packet_t *rp0;
2730 
2731  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
2732  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
2733  eth_if0 = ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
2734 
2735  if (!eth_if0 || !vnet_sw_interface_is_admin_up (vnm, sw_if_index))
2736  return;
2737 
2738  /* look up the radv_t information for this interface */
2739  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2740  ~0);
2741 
2742  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2743 
2744  if (ri == ~0)
2745  return;
2746 
2747  /* send report now - build a mldpv2 report packet */
2748  n_allocated = vlib_buffer_alloc_from_free_list (vm,
2749  &bo0,
2750  n_to_alloc,
2751  VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
2752  if (PREDICT_FALSE (n_allocated == 0))
2753  {
2754  clib_warning ("buffer allocation failure");
2755  return;
2756  }
2757 
2758  b0 = vlib_get_buffer (vm, bo0);
2759 
2760  /* adjust the sizeof the buffer to just include the ipv6 header */
2761  b0->current_length = sizeof (icmp6_multicast_listener_report_packet_t);
2762 
2763  payload_length = sizeof (icmp6_multicast_listener_report_header_t);
2764 
2765  b0->error = ICMP6_ERROR_NONE;
2766 
2767  rp0 = vlib_buffer_get_current (b0);
2768  ip0 = (ip6_header_t *) & rp0->ip;
2769  rh0 = (icmp6_multicast_listener_report_header_t *) & rp0->report_hdr;
2770 
2771  memset (rp0, 0x0, sizeof (icmp6_multicast_listener_report_packet_t));
2772 
2773  ip0->ip_version_traffic_class_and_flow_label =
2774  clib_host_to_net_u32 (0x6 << 28);
2775 
2776  ip0->protocol = IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS;
2777  /* for DEBUG - vnet driver won't seem to emit router alerts */
2778  /* ip0->protocol = IP_PROTOCOL_ICMP6; */
2779  ip0->hop_limit = 1;
2780 
2781  rh0->icmp.type = ICMP6_multicast_listener_report_v2;
2782 
2783  /* source address MUST be the link-local address */
2784  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
2785  ip0->src_address = radv_info->link_local_address;
2786 
2787  /* destination is all mldpv2 routers */
2788  ip6_set_reserved_multicast_address (&ip0->dst_address,
2789  IP6_MULTICAST_SCOPE_link_local,
2790  IP6_MULTICAST_GROUP_ID_mldv2_routers);
2791 
2792  /* add reports here */
2793  ip6_mldp_group_t *m;
2794  int num_addr_records = 0;
2795  icmp6_multicast_address_record_t rr;
2796 
2797  /* fill in the hop-by-hop extension header (router alert) info */
2798  rh0->ext_hdr.next_hdr = IP_PROTOCOL_ICMP6;
2799  rh0->ext_hdr.n_data_u64s = 0;
2800 
2801  rh0->alert.type = IP6_MLDP_ALERT_TYPE;
2802  rh0->alert.len = 2;
2803  rh0->alert.value = 0;
2804 
2805  rh0->pad.type = 1;
2806  rh0->pad.len = 0;
2807 
2808  rh0->icmp.checksum = 0;
2809 
2810  /* *INDENT-OFF* */
2811  pool_foreach (m, radv_info->mldp_group_pool,
2812  ({
2813  rr.type = m->type;
2814  rr.aux_data_len_u32s = 0;
2815  rr.num_sources = clib_host_to_net_u16 (m->num_sources);
2816  clib_memcpy(&rr.mcast_addr, &m->mcast_address, sizeof(ip6_address_t));
2817 
2818  num_addr_records++;
2819 
2820  vlib_buffer_add_data
2821  (vm, vlib_buffer_get_free_list_index (b0), bo0,
2822  (void *)&rr, sizeof(icmp6_multicast_address_record_t));
2823 
2824  payload_length += sizeof( icmp6_multicast_address_record_t);
2825  }));
2826  /* *INDENT-ON* */
2827 
2828  rh0->rsvd = 0;
2829  rh0->num_addr_records = clib_host_to_net_u16 (num_addr_records);
2830 
2831  /* update lengths */
2832  ip0->payload_length = clib_host_to_net_u16 (payload_length);
2833 
2834  rh0->icmp.checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
2835  &bogus_length);
2836  ASSERT (bogus_length == 0);
2837 
2838  /*
2839  * OK to override w/ no regard for actual FIB, because
2840  * ip6-rewrite only looks at the adjacency.
2841  */
2842  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
2843  vnet_main.local_interface_sw_if_index;
2844 
2845  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = radv_info->mcast_adj_index;
2846  b0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
2847 
2848  vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "ip6-rewrite-mcast");
2849 
2850  f = vlib_get_frame_to_node (vm, node->index);
2851  to_next = vlib_frame_vector_args (f);
2852  to_next[0] = bo0;
2853  f->n_vectors = 1;
2854 
2855  vlib_put_frame_to_node (vm, node->index, f);
2856  return;
2857 }
2858 
2859 /* *INDENT-OFF* */
2860 VLIB_REGISTER_NODE (ip6_icmp_router_solicitation_node,static) =
2861 {
2862  .function = icmp6_router_solicitation,
2863  .name = "icmp6-router-solicitation",
2864 
2865  .vector_size = sizeof (u32),
2866 
2867  .format_trace = format_icmp6_input_trace,
2868 
2869  .n_next_nodes = ICMP6_ROUTER_SOLICITATION_N_NEXT,
2870  .next_nodes = {
2871  [ICMP6_ROUTER_SOLICITATION_NEXT_DROP] = "ip6-drop",
2872  [ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW] = "ip6-rewrite-mcast",
2873  [ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX] = "interface-output",
2874  },
2875 };
2876 /* *INDENT-ON* */
2877 
2878 /* send a RA or update the timer info etc.. */
2879 static uword
2880 ip6_neighbor_process_timer_event (vlib_main_t * vm,
2881  vlib_node_runtime_t * node,
2882  vlib_frame_t * frame)
2883 {
2884  vnet_main_t *vnm = vnet_get_main ();
2885  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2886  ip6_radv_t *radv_info;
2887  vlib_frame_t *f = 0;
2888  u32 n_this_frame = 0;
2889  u32 n_left_to_next = 0;
2890  u32 *to_next = 0;
2891  u32 bo0;
2892  icmp6_router_solicitation_header_t *h0;
2893  vlib_buffer_t *b0;
2894  f64 now = vlib_time_now (vm);
2895 
2896  /* Interface ip6 radv info list */
2897  /* *INDENT-OFF* */
2898  pool_foreach (radv_info, nm->if_radv_pool,
2899  ({
2900  if( !vnet_sw_interface_is_admin_up (vnm, radv_info->sw_if_index))
2901  {
2902  radv_info->initial_adverts_sent = radv_info->initial_adverts_count-1;
2903  radv_info->next_multicast_time = now;
2904  radv_info->last_multicast_time = now;
2905  radv_info->last_radv_time = 0;
2906  radv_info->all_routers_mcast = 0;
2907  continue;
2908  }
2909 
2910  /* Make sure that we've joined the all-routers multicast group */
2911  if(!radv_info->all_routers_mcast)
2912  {
2913  /* send MDLP_REPORT_EVENT message */
2914  ip6_neighbor_send_mldpv2_report(radv_info->sw_if_index);
2915  radv_info->all_routers_mcast = 1;
2916  }
2917 
2918  /* is it time to send a multicast RA on this interface? */
2919  if(radv_info->send_radv && (now >= radv_info->next_multicast_time))
2920  {
2921  u32 n_to_alloc = 1;
2922  u32 n_allocated;
2923 
2924  f64 rfn = (radv_info->max_radv_interval - radv_info->min_radv_interval) *
2925  random_f64 (&radv_info->seed) + radv_info->min_radv_interval;
2926 
2927  /* multicast send - compute next multicast send time */
2928  if( radv_info->initial_adverts_sent > 0)
2929  {
2930  radv_info->initial_adverts_sent--;
2931  if(rfn > radv_info-> initial_adverts_interval)
2932  rfn = radv_info-> initial_adverts_interval;
2933 
2934  /* check to see if we are ceasing to send */
2935  if( radv_info->initial_adverts_sent == 0)
2936  if(radv_info->cease_radv)
2937  radv_info->send_radv = 0;
2938  }
2939 
2940  radv_info->next_multicast_time = rfn + now;
2941  radv_info->last_multicast_time = now;
2942 
2943  /* send advert now - build a "solicted" router advert with unspecified source address */
2944  n_allocated = vlib_buffer_alloc_from_free_list
2945  (vm, &bo0, n_to_alloc, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
2946 
2947  if (PREDICT_FALSE(n_allocated == 0))
2948  {
2949  clib_warning ("buffer allocation failure");
2950  continue;
2951  }
2952  b0 = vlib_get_buffer (vm, bo0);
2953  b0->current_length = sizeof( icmp6_router_solicitation_header_t);
2954  b0->error = ICMP6_ERROR_NONE;
2955  vnet_buffer (b0)->sw_if_index[VLIB_RX] = radv_info->sw_if_index;
2956 
2957  h0 = vlib_buffer_get_current (b0);
2958 
2959  memset (h0, 0, sizeof (icmp6_router_solicitation_header_t));
2960 
2961  h0->ip.ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (0x6 << 28);
2962  h0->ip.payload_length = clib_host_to_net_u16 (sizeof (icmp6_router_solicitation_header_t)
2963  - STRUCT_OFFSET_OF (icmp6_router_solicitation_header_t, neighbor));
2964  h0->ip.protocol = IP_PROTOCOL_ICMP6;
2965  h0->ip.hop_limit = 255;
2966 
2967  /* set src/dst address as "unspecified" this marks this packet as internally generated rather than recieved */
2968  h0->ip.src_address.as_u64[0] = 0;
2969  h0->ip.src_address.as_u64[1] = 0;
2970 
2971  h0->ip.dst_address.as_u64[0] = 0;
2972  h0->ip.dst_address.as_u64[1] = 0;
2973 
2974  h0->neighbor.icmp.type = ICMP6_router_solicitation;
2975 
2976  if (PREDICT_FALSE(f == 0))
2977  {
2978  f = vlib_get_frame_to_node (vm, ip6_icmp_router_solicitation_node.index);
2979  to_next = vlib_frame_vector_args (f);
2980  n_left_to_next = VLIB_FRAME_SIZE;
2981  n_this_frame = 0;
2982  }
2983 
2984  n_this_frame++;
2985  n_left_to_next--;
2986  to_next[0] = bo0;
2987  to_next += 1;
2988 
2989  if (PREDICT_FALSE(n_left_to_next == 0))
2990  {
2991  f->n_vectors = n_this_frame;
2992  vlib_put_frame_to_node (vm, ip6_icmp_router_solicitation_node.index, f);
2993  f = 0;
2994  }
2995  }
2996  }));
2997  /* *INDENT-ON* */
2998 
2999  if (f)
3000  {
3001  ASSERT (n_this_frame);
3002  f->n_vectors = n_this_frame;
3003  vlib_put_frame_to_node (vm, ip6_icmp_router_solicitation_node.index, f);
3004  }
3005  return 0;
3006 }
3007 
3008 static uword
3009 ip6_icmp_neighbor_discovery_event_process (vlib_main_t * vm,
3010  vlib_node_runtime_t * node,
3011  vlib_frame_t * frame)
3012 {
3013  uword event_type;
3014  ip6_icmp_neighbor_discovery_event_data_t *event_data;
3015 
3016  /* init code here */
3017 
3018  while (1)
3019  {
3020  vlib_process_wait_for_event_or_clock (vm, 1. /* seconds */ );
3021 
3022  event_data = vlib_process_get_event_data (vm, &event_type);
3023 
3024  if (!event_data)
3025  {
3026  /* No events found: timer expired. */
3027  /* process interface list and send RAs as appropriate, update timer info */
3028  ip6_neighbor_process_timer_event (vm, node, frame);
3029  }
3030  else
3031  {
3032  switch (event_type)
3033  {
3034 
3035  case ICMP6_ND_EVENT_INIT:
3036  break;
3037 
3038  case ~0:
3039  break;
3040 
3041  default:
3042  ASSERT (0);
3043  }
3044 
3045  if (event_data)
3046  _vec_len (event_data) = 0;
3047  }
3048  }
3049  return frame->n_vectors;
3050 }
3051 
3052 /* *INDENT-OFF* */
3053 VLIB_REGISTER_NODE (ip6_icmp_router_advertisement_node,static) =
3054 {
3055  .function = icmp6_router_advertisement,
3056  .name = "icmp6-router-advertisement",
3057 
3058  .vector_size = sizeof (u32),
3059 
3060  .format_trace = format_icmp6_input_trace,
3061 
3062  .n_next_nodes = 1,
3063  .next_nodes = {
3064  [0] = "ip6-drop",
3065  },
3066 };
3067 /* *INDENT-ON* */
3068 
3069 vlib_node_registration_t ip6_icmp_neighbor_discovery_event_node = {
3070 
3071  .function = ip6_icmp_neighbor_discovery_event_process,
3072  .name = "ip6-icmp-neighbor-discovery-event-process",
3073  .type = VLIB_NODE_TYPE_PROCESS,
3074 };
3075 
3076 static uword
3077 icmp6_neighbor_solicitation (vlib_main_t * vm,
3078  vlib_node_runtime_t * node, vlib_frame_t * frame)
3079 {
3080  return icmp6_neighbor_solicitation_or_advertisement (vm, node, frame,
3081  /* is_solicitation */
3082  1);
3083 }
3084 
3085 static uword
3086 icmp6_neighbor_advertisement (vlib_main_t * vm,
3087  vlib_node_runtime_t * node,
3088  vlib_frame_t * frame)
3089 {
3090  return icmp6_neighbor_solicitation_or_advertisement (vm, node, frame,
3091  /* is_solicitation */
3092  0);
3093 }
3094 
3095 /* *INDENT-OFF* */
3096 VLIB_REGISTER_NODE (ip6_icmp_neighbor_solicitation_node,static) =
3097 {
3098  .function = icmp6_neighbor_solicitation,
3099  .name = "icmp6-neighbor-solicitation",
3100 
3101  .vector_size = sizeof (u32),
3102 
3103  .format_trace = format_icmp6_input_trace,
3104 
3105  .n_next_nodes = ICMP6_NEIGHBOR_SOLICITATION_N_NEXT,
3106  .next_nodes = {
3107  [ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP] = "ip6-drop",
3108  [ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY] = "interface-output",
3109  },
3110 };
3111 /* *INDENT-ON* */
3112 
3113 /* *INDENT-OFF* */
3114 VLIB_REGISTER_NODE (ip6_icmp_neighbor_advertisement_node,static) =
3115 {
3116  .function = icmp6_neighbor_advertisement,
3117  .name = "icmp6-neighbor-advertisement",
3118 
3119  .vector_size = sizeof (u32),
3120 
3121  .format_trace = format_icmp6_input_trace,
3122 
3123  .n_next_nodes = 1,
3124  .next_nodes = {
3125  [0] = "ip6-drop",
3126  },
3127 };
3128 /* *INDENT-ON* */
3129 
3130 typedef enum
3131 {
3132  IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
3133  IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX,
3134  IP6_DISCOVER_NEIGHBOR_N_NEXT,
3135 } ip6_discover_neighbor_next_t;
3136 
3137 typedef enum
3138 {
3139  IP6_DISCOVER_NEIGHBOR_ERROR_DROP,
3140  IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT,
3141  IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS,
3142 } ip6_discover_neighbor_error_t;
3143 
3144 static uword
3145 ip6_discover_neighbor_inline (vlib_main_t * vm,
3146  vlib_node_runtime_t * node,
3147  vlib_frame_t * frame, int is_glean)
3148 {
3149  vnet_main_t *vnm = vnet_get_main ();
3150  ip6_main_t *im = &ip6_main;
3151  ip_lookup_main_t *lm = &im->lookup_main;
3152  u32 *from, *to_next_drop;
3153  uword n_left_from, n_left_to_next_drop;
3154  static f64 time_last_seed_change = -1e100;
3155  static u32 hash_seeds[3];
3156  static uword hash_bitmap[256 / BITS (uword)];
3157  f64 time_now;
3158  int bogus_length;
3159  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3160 
3161  if (node->flags & VLIB_NODE_FLAG_TRACE)
3162  ip6_forward_next_trace (vm, node, frame, VLIB_TX);
3163 
3164  time_now = vlib_time_now (vm);
3165  if (time_now - time_last_seed_change > 1e-3)
3166  {
3167  uword i;
3168  u32 *r = clib_random_buffer_get_data (&vm->random_buffer,
3169  sizeof (hash_seeds));
3170  for (i = 0; i < ARRAY_LEN (hash_seeds); i++)
3171  hash_seeds[i] = r[i];
3172 
3173  /* Mark all hash keys as been not-seen before. */
3174  for (i = 0; i < ARRAY_LEN (hash_bitmap); i++)
3175  hash_bitmap[i] = 0;
3176 
3177  time_last_seed_change = time_now;
3178  }
3179 
3180  from = vlib_frame_vector_args (frame);
3181  n_left_from = frame->n_vectors;
3182 
3183  while (n_left_from > 0)
3184  {
3185  vlib_get_next_frame (vm, node, IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
3186  to_next_drop, n_left_to_next_drop);
3187 
3188  while (n_left_from > 0 && n_left_to_next_drop > 0)
3189  {
3190  vlib_buffer_t *p0;
3191  ip6_header_t *ip0;
3192  u32 pi0, adj_index0, a0, b0, c0, m0, sw_if_index0, drop0;
3193  uword bm0;
3194  ip_adjacency_t *adj0;
3195  vnet_hw_interface_t *hw_if0;
3196  ip6_radv_t *radv_info;
3197  u32 next0;
3198 
3199  pi0 = from[0];
3200 
3201  p0 = vlib_get_buffer (vm, pi0);
3202 
3203  adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
3204 
3205  ip0 = vlib_buffer_get_current (p0);
3206 
3207  adj0 = adj_get (adj_index0);
3208 
3209  if (!is_glean)
3210  {
3211  ip0->dst_address.as_u64[0] =
3212  adj0->sub_type.nbr.next_hop.ip6.as_u64[0];
3213  ip0->dst_address.as_u64[1] =
3214  adj0->sub_type.nbr.next_hop.ip6.as_u64[1];
3215  }
3216 
3217  a0 = hash_seeds[0];
3218  b0 = hash_seeds[1];
3219  c0 = hash_seeds[2];
3220 
3221  sw_if_index0 = adj0->rewrite_header.sw_if_index;
3222  vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0;
3223 
3224  a0 ^= sw_if_index0;
3225  b0 ^= ip0->dst_address.as_u32[0];
3226  c0 ^= ip0->dst_address.as_u32[1];
3227 
3228  hash_v3_mix32 (a0, b0, c0);
3229 
3230  b0 ^= ip0->dst_address.as_u32[2];
3231  c0 ^= ip0->dst_address.as_u32[3];
3232 
3233  hash_v3_finalize32 (a0, b0, c0);
3234 
3235  c0 &= BITS (hash_bitmap) - 1;
3236  c0 = c0 / BITS (uword);
3237  m0 = (uword) 1 << (c0 % BITS (uword));
3238 
3239  bm0 = hash_bitmap[c0];
3240  drop0 = (bm0 & m0) != 0;
3241 
3242  /* Mark it as seen. */
3243  hash_bitmap[c0] = bm0 | m0;
3244 
3245  from += 1;
3246  n_left_from -= 1;
3247  to_next_drop[0] = pi0;
3248  to_next_drop += 1;
3249  n_left_to_next_drop -= 1;
3250 
3251  hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
3252 
3253  /* If the interface is link-down, drop the pkt */
3254  if (!(hw_if0->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
3255  drop0 = 1;
3256 
3257  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) > sw_if_index0)
3258  {
3259  u32 ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
3260 
3261  if (ri != ~0)
3262  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3263  else
3264  drop0 = 1;
3265  }
3266  else
3267  drop0 = 1;
3268 
3269  /*
3270  * the adj has been updated to a rewrite but the node the DPO that got
3271  * us here hasn't - yet. no big deal. we'll drop while we wait.
3272  */
3273  if (IP_LOOKUP_NEXT_REWRITE == adj0->lookup_next_index)
3274  drop0 = 1;
3275 
3276  p0->error =
3277  node->errors[drop0 ? IP6_DISCOVER_NEIGHBOR_ERROR_DROP
3278  : IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT];
3279 
3280  if (drop0)
3281  continue;
3282 
3283  {
3284  u32 bi0 = 0;
3285  icmp6_neighbor_solicitation_header_t *h0;
3286  vlib_buffer_t *b0;
3287 
3288  h0 = vlib_packet_template_get_packet
3289  (vm, &im->discover_neighbor_packet_template, &bi0);
3290  if (!h0)
3291  continue;
3292 
3293  /*
3294  * Build ethernet header.
3295  * Choose source address based on destination lookup
3296  * adjacency.
3297  */
3298  if (!ip6_src_address_for_packet (lm,
3299  sw_if_index0,
3300  &ip0->dst_address,
3301  &h0->ip.src_address))
3302  {
3303  /* There is no address on the interface */
3304  p0->error =
3305  node->errors[IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS];
3306  vlib_buffer_free (vm, &bi0, 1);
3307  continue;
3308  }
3309 
3310  /*
3311  * Destination address is a solicited node multicast address.
3312  * We need to fill in
3313  * the low 24 bits with low 24 bits of target's address.
3314  */
3315  h0->ip.dst_address.as_u8[13] = ip0->dst_address.as_u8[13];
3316  h0->ip.dst_address.as_u8[14] = ip0->dst_address.as_u8[14];
3317  h0->ip.dst_address.as_u8[15] = ip0->dst_address.as_u8[15];
3318 
3319  h0->neighbor.target_address = ip0->dst_address;
3320 
3321  clib_memcpy (h0->link_layer_option.ethernet_address,
3322  hw_if0->hw_address, vec_len (hw_if0->hw_address));
3323 
3324  /* $$$$ appears we need this; why is the checksum non-zero? */
3325  h0->neighbor.icmp.checksum = 0;
3326  h0->neighbor.icmp.checksum =
3327  ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h0->ip,
3328  &bogus_length);
3329 
3330  ASSERT (bogus_length == 0);
3331 
3332  vlib_buffer_copy_trace_flag (vm, p0, bi0);
3333  b0 = vlib_get_buffer (vm, bi0);
3334  vnet_buffer (b0)->sw_if_index[VLIB_TX]
3335  = vnet_buffer (p0)->sw_if_index[VLIB_TX];
3336 
3337  vnet_buffer (b0)->ip.adj_index[VLIB_TX] =
3338  radv_info->mcast_adj_index;
3339 
3340  b0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
3341  next0 = IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX;
3342 
3343  vlib_set_next_frame_buffer (vm, node, next0, bi0);
3344  }
3345  }
3346 
3347  vlib_put_next_frame (vm, node, IP6_DISCOVER_NEIGHBOR_NEXT_DROP,
3348  n_left_to_next_drop);
3349  }
3350 
3351  return frame->n_vectors;
3352 }
3353 
3354 static uword
3355 ip6_discover_neighbor (vlib_main_t * vm,
3356  vlib_node_runtime_t * node, vlib_frame_t * frame)
3357 {
3358  return (ip6_discover_neighbor_inline (vm, node, frame, 0));
3359 }
3360 
3361 static uword
3362 ip6_glean (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
3363 {
3364  return (ip6_discover_neighbor_inline (vm, node, frame, 1));
3365 }
3366 
3367 static char *ip6_discover_neighbor_error_strings[] = {
3368  [IP6_DISCOVER_NEIGHBOR_ERROR_DROP] = "address overflow drops",
3369  [IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT] = "neighbor solicitations sent",
3370  [IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS]
3371  = "no source address for ND solicitation",
3372 };
3373 
3374 /* *INDENT-OFF* */
3375 VLIB_REGISTER_NODE (ip6_glean_node) =
3376 {
3377  .function = ip6_glean,
3378  .name = "ip6-glean",
3379  .vector_size = sizeof (u32),
3380  .format_trace = format_ip6_forward_next_trace,
3381  .n_errors = ARRAY_LEN (ip6_discover_neighbor_error_strings),
3382  .error_strings = ip6_discover_neighbor_error_strings,
3383  .n_next_nodes = IP6_DISCOVER_NEIGHBOR_N_NEXT,
3384  .next_nodes =
3385  {
3386  [IP6_DISCOVER_NEIGHBOR_NEXT_DROP] = "ip6-drop",
3387  [IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX] = "ip6-rewrite-mcast",
3388  },
3389 };
3390 VLIB_REGISTER_NODE (ip6_discover_neighbor_node) =
3391 {
3392  .function = ip6_discover_neighbor,
3393  .name = "ip6-discover-neighbor",
3394  .vector_size = sizeof (u32),
3395  .format_trace = format_ip6_forward_next_trace,
3396  .n_errors = ARRAY_LEN (ip6_discover_neighbor_error_strings),
3397  .error_strings = ip6_discover_neighbor_error_strings,
3398  .n_next_nodes = IP6_DISCOVER_NEIGHBOR_N_NEXT,
3399  .next_nodes =
3400  {
3401  [IP6_DISCOVER_NEIGHBOR_NEXT_DROP] = "ip6-drop",
3402  [IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX] = "ip6-rewrite-mcast",
3403  },
3404 };
3405 /* *INDENT-ON* */
3406 
3407 /* API support functions */
3408 int
3409 ip6_neighbor_ra_config (vlib_main_t * vm, u32 sw_if_index,
3410  u8 suppress, u8 managed, u8 other,
3411  u8 ll_option, u8 send_unicast, u8 cease,
3412  u8 use_lifetime, u32 lifetime,
3413  u32 initial_count, u32 initial_interval,
3414  u32 max_interval, u32 min_interval, u8 is_no)
3415 {
3416  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3417  int error;
3418  u32 ri;
3419 
3420  /* look up the radv_t information for this interface */
3421  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
3422  ~0);
3423  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3424  error = (ri != ~0) ? 0 : VNET_API_ERROR_INVALID_SW_IF_INDEX;
3425 
3426  if (!error)
3427  {
3428 
3429  ip6_radv_t *radv_info;
3430  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3431 
3432  if ((max_interval != 0) && (min_interval == 0))
3433  min_interval = .75 * max_interval;
3434 
3435  max_interval =
3436  (max_interval !=
3437  0) ? ((is_no) ? DEF_MAX_RADV_INTERVAL : max_interval) :
3438  radv_info->max_radv_interval;
3439  min_interval =
3440  (min_interval !=
3441  0) ? ((is_no) ? DEF_MIN_RADV_INTERVAL : min_interval) :
3442  radv_info->min_radv_interval;
3443  lifetime =
3444  (use_lifetime !=
3445  0) ? ((is_no) ? DEF_DEF_RTR_LIFETIME : lifetime) :
3446  radv_info->adv_router_lifetime_in_sec;
3447 
3448  if (lifetime)
3449  {
3450  if (lifetime > MAX_DEF_RTR_LIFETIME)
3451  lifetime = MAX_DEF_RTR_LIFETIME;
3452 
3453  if (lifetime <= max_interval)
3454  return VNET_API_ERROR_INVALID_VALUE;
3455  }
3456 
3457  if (min_interval != 0)
3458  {
3459  if ((min_interval > .75 * max_interval) || (min_interval < 3))
3460  return VNET_API_ERROR_INVALID_VALUE;
3461  }
3462 
3463  if ((initial_count > MAX_INITIAL_RTR_ADVERTISEMENTS) ||
3464  (initial_interval > MAX_INITIAL_RTR_ADVERT_INTERVAL))
3465  return VNET_API_ERROR_INVALID_VALUE;
3466 
3467  /*
3468  if "flag" is set and is_no is true then restore default value else set value corresponding to "flag"
3469  if "flag" is clear don't change corresponding value
3470  */
3471  radv_info->send_radv =
3472  (suppress != 0) ? ((is_no != 0) ? 1 : 0) : radv_info->send_radv;
3473  radv_info->adv_managed_flag =
3474  (managed != 0) ? ((is_no) ? 0 : 1) : radv_info->adv_managed_flag;
3475  radv_info->adv_other_flag =
3476  (other != 0) ? ((is_no) ? 0 : 1) : radv_info->adv_other_flag;
3477  radv_info->adv_link_layer_address =
3478  (ll_option !=
3479  0) ? ((is_no) ? 1 : 0) : radv_info->adv_link_layer_address;
3480  radv_info->send_unicast =
3481  (send_unicast != 0) ? ((is_no) ? 0 : 1) : radv_info->send_unicast;
3482  radv_info->cease_radv =
3483  (cease != 0) ? ((is_no) ? 0 : 1) : radv_info->cease_radv;
3484 
3485  radv_info->min_radv_interval = min_interval;
3486  radv_info->max_radv_interval = max_interval;
3487  radv_info->adv_router_lifetime_in_sec = lifetime;
3488 
3489  radv_info->initial_adverts_count =
3490  (initial_count !=
3491  0) ? ((is_no) ? MAX_INITIAL_RTR_ADVERTISEMENTS : initial_count) :
3492  radv_info->initial_adverts_count;
3493  radv_info->initial_adverts_interval =
3494  (initial_interval !=
3495  0) ? ((is_no) ? MAX_INITIAL_RTR_ADVERT_INTERVAL : initial_interval) :
3496  radv_info->initial_adverts_interval;
3497 
3498  /* restart */
3499  if ((cease != 0) && (is_no))
3500  radv_info->send_radv = 1;
3501 
3502  radv_info->initial_adverts_sent = radv_info->initial_adverts_count - 1;
3503  radv_info->next_multicast_time = vlib_time_now (vm);
3504  radv_info->last_multicast_time = vlib_time_now (vm);
3505  radv_info->last_radv_time = 0;
3506  }
3507  return (error);
3508 }
3509 
3510 int
3511 ip6_neighbor_ra_prefix (vlib_main_t * vm, u32 sw_if_index,
3512  ip6_address_t * prefix_addr, u8 prefix_len,
3513  u8 use_default, u32 val_lifetime, u32 pref_lifetime,
3514  u8 no_advertise, u8 off_link, u8 no_autoconfig,
3515  u8 no_onlink, u8 is_no)
3516 {
3517  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3518  int error;
3519 
3520  u32 ri;
3521 
3522  /* look up the radv_t information for this interface */
3523  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
3524  ~0);
3525 
3526  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3527 
3528  error = (ri != ~0) ? 0 : VNET_API_ERROR_INVALID_SW_IF_INDEX;
3529 
3530  if (!error)
3531  {
3532  f64 now = vlib_time_now (vm);
3533  ip6_radv_t *radv_info;
3534  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3535 
3536  /* prefix info add, delete or update */
3537  ip6_radv_prefix_t *prefix;
3538 
3539  /* lookup prefix info for this address on this interface */
3540  uword *p = mhash_get (&radv_info->address_to_prefix_index, prefix_addr);
3541 
3542  prefix = p ? pool_elt_at_index (radv_info->adv_prefixes_pool, p[0]) : 0;
3543 
3544  if (is_no)
3545  {
3546  /* delete */
3547  if (!prefix)
3548  return VNET_API_ERROR_INVALID_VALUE; /* invalid prefix */
3549 
3550  if (prefix->prefix_len != prefix_len)
3551  return VNET_API_ERROR_INVALID_VALUE_2;
3552 
3553  /* FIXME - Should the DP do this or the CP ? */
3554  /* do specific delete processing here before returning */
3555  /* try to remove from routing table */
3556 
3557  mhash_unset (&radv_info->address_to_prefix_index, prefix_addr,
3558  /* old_value */ 0);
3559  pool_put (radv_info->adv_prefixes_pool, prefix);
3560 
3561  radv_info->initial_adverts_sent =
3562  radv_info->initial_adverts_count - 1;
3563  radv_info->next_multicast_time = vlib_time_now (vm);
3564  radv_info->last_multicast_time = vlib_time_now (vm);
3565  radv_info->last_radv_time = 0;
3566  return (error);
3567  }
3568 
3569  /* adding or changing */
3570  if (!prefix)
3571  {
3572  /* add */
3573  u32 pi;
3574  pool_get (radv_info->adv_prefixes_pool, prefix);
3575  pi = prefix - radv_info->adv_prefixes_pool;
3576  mhash_set (&radv_info->address_to_prefix_index, prefix_addr, pi,
3577  /* old_value */ 0);
3578 
3579  memset (prefix, 0x0, sizeof (ip6_radv_prefix_t));
3580 
3581  prefix->prefix_len = prefix_len;
3582  clib_memcpy (&prefix->prefix, prefix_addr, sizeof (ip6_address_t));
3583 
3584  /* initialize default values */
3585  prefix->adv_on_link_flag = 1; /* L bit set */
3586  prefix->adv_autonomous_flag = 1; /* A bit set */
3587  prefix->adv_valid_lifetime_in_secs = DEF_ADV_VALID_LIFETIME;
3588  prefix->adv_pref_lifetime_in_secs = DEF_ADV_PREF_LIFETIME;
3589  prefix->enabled = 1;
3590  prefix->decrement_lifetime_flag = 1;
3591  prefix->deprecated_prefix_flag = 1;
3592 
3593  if (off_link == 0)
3594  {
3595  /* FIXME - Should the DP do this or the CP ? */
3596  /* insert prefix into routing table as a connected prefix */
3597  }
3598 
3599  if (use_default)
3600  goto restart;
3601  }
3602  else
3603  {
3604 
3605  if (prefix->prefix_len != prefix_len)
3606  return VNET_API_ERROR_INVALID_VALUE_2;
3607 
3608  if (off_link != 0)
3609  {
3610  /* FIXME - Should the DP do this or the CP ? */
3611  /* remove from routing table if already there */
3612  }
3613  }
3614 
3615  if ((val_lifetime == ~0) || (pref_lifetime == ~0))
3616  {
3617  prefix->adv_valid_lifetime_in_secs = ~0;
3618  prefix->adv_pref_lifetime_in_secs = ~0;
3619  prefix->decrement_lifetime_flag = 0;
3620  }
3621  else
3622  {
3623  prefix->adv_valid_lifetime_in_secs = val_lifetime;;
3624  prefix->adv_pref_lifetime_in_secs = pref_lifetime;
3625  }
3626 
3627  /* copy remaining */
3628  prefix->enabled = !(no_advertise != 0);
3629  prefix->adv_on_link_flag = !((off_link != 0) || (no_onlink != 0));
3630  prefix->adv_autonomous_flag = !(no_autoconfig != 0);
3631 
3632  restart:
3633  /* restart */
3634  /* fill in the expiration times */
3635  prefix->valid_lifetime_expires =
3636  now + prefix->adv_valid_lifetime_in_secs;
3637  prefix->pref_lifetime_expires = now + prefix->adv_pref_lifetime_in_secs;
3638 
3639  radv_info->initial_adverts_sent = radv_info->initial_adverts_count - 1;
3640  radv_info->next_multicast_time = vlib_time_now (vm);
3641  radv_info->last_multicast_time = vlib_time_now (vm);
3642  radv_info->last_radv_time = 0;
3643  }
3644  return (error);
3645 }
3646 
3647 clib_error_t *
3648 ip6_neighbor_cmd (vlib_main_t * vm, unformat_input_t * main_input,
3649  vlib_cli_command_t * cmd)
3650 {
3651  vnet_main_t *vnm = vnet_get_main ();
3652  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3653  clib_error_t *error = 0;
3654  u8 is_no = 0;
3655  u8 suppress = 0, managed = 0, other = 0;
3656  u8 suppress_ll_option = 0, send_unicast = 0, cease = 0;
3657  u8 use_lifetime = 0;
3658  u32 sw_if_index, ra_lifetime = 0, ra_initial_count =
3659  0, ra_initial_interval = 0;
3660  u32 ra_max_interval = 0, ra_min_interval = 0;
3661 
3662  unformat_input_t _line_input, *line_input = &_line_input;
3663  vnet_sw_interface_t *sw_if0;
3664 
3665  int add_radv_info = 1;
3666  __attribute__ ((unused)) ip6_radv_t *radv_info = 0;
3667  ip6_address_t ip6_addr;
3668  u32 addr_len;
3669 
3670 
3671  /* Get a line of input. */
3672  if (!unformat_user (main_input, unformat_line_input, line_input))
3673  return 0;
3674 
3675  /* get basic radv info for this interface */
3676  if (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3677  {
3678 
3679  if (unformat_user (line_input,
3680  unformat_vnet_sw_interface, vnm, &sw_if_index))
3681  {
3682  u32 ri;
3683  ethernet_interface_t *eth_if0 = 0;
3684 
3685  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
3686  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
3687  eth_if0 =
3688  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
3689 
3690  if (!eth_if0)
3691  {
3692  error =
3693  clib_error_return (0, "Interface must be of ethernet type");
3694  goto done;
3695  }
3696 
3697  /* look up the radv_t information for this interface */
3698  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
3699  sw_if_index, ~0);
3700 
3701  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3702 
3703  if (ri != ~0)
3704  {
3705  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3706  }
3707  else
3708  {
3709  error = clib_error_return (0, "unknown interface %U'",
3710  format_unformat_error, line_input);
3711  goto done;
3712  }
3713  }
3714  else
3715  {
3716  error = clib_error_return (0, "invalid interface name %U'",
3717  format_unformat_error, line_input);
3718  goto done;
3719  }
3720  }
3721 
3722  /* get the rest of the command */
3723  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3724  {
3725  if (unformat (line_input, "no"))
3726  is_no = 1;
3727  else if (unformat (line_input, "prefix %U/%d",
3728  unformat_ip6_address, &ip6_addr, &addr_len))
3729  {
3730  add_radv_info = 0;
3731  break;
3732  }
3733  else if (unformat (line_input, "ra-managed-config-flag"))
3734  {
3735  managed = 1;
3736  break;
3737  }
3738  else if (unformat (line_input, "ra-other-config-flag"))
3739  {
3740  other = 1;
3741  break;
3742  }
3743  else if (unformat (line_input, "ra-suppress") ||
3744  unformat (line_input, "ra-surpress"))
3745  {
3746  suppress = 1;
3747  break;
3748  }
3749  else if (unformat (line_input, "ra-suppress-link-layer") ||
3750  unformat (line_input, "ra-surpress-link-layer"))
3751  {
3752  suppress_ll_option = 1;
3753  break;
3754  }
3755  else if (unformat (line_input, "ra-send-unicast"))
3756  {
3757  send_unicast = 1;
3758  break;
3759  }
3760  else if (unformat (line_input, "ra-lifetime"))
3761  {
3762  if (!unformat (line_input, "%d", &ra_lifetime))
3763  {
3764  error = unformat_parse_error (line_input);
3765  goto done;
3766  }
3767  use_lifetime = 1;
3768  break;
3769  }
3770  else if (unformat (line_input, "ra-initial"))
3771  {
3772  if (!unformat
3773  (line_input, "%d %d", &ra_initial_count, &ra_initial_interval))
3774  {
3775  error = unformat_parse_error (line_input);
3776  goto done;
3777  }
3778  break;
3779  }
3780  else if (unformat (line_input, "ra-interval"))
3781  {
3782  if (!unformat (line_input, "%d", &ra_max_interval))
3783  {
3784  error = unformat_parse_error (line_input);
3785  goto done;
3786  }
3787 
3788  if (!unformat (line_input, "%d", &ra_min_interval))
3789  ra_min_interval = 0;
3790  break;
3791  }
3792  else if (unformat (line_input, "ra-cease"))
3793  {
3794  cease = 1;
3795  break;
3796  }
3797  else
3798  {
3799  error = unformat_parse_error (line_input);
3800  goto done;
3801  }
3802  }
3803 
3804  if (add_radv_info)
3805  {
3806  ip6_neighbor_ra_config (vm, sw_if_index,
3807  suppress, managed, other,
3808  suppress_ll_option, send_unicast, cease,
3809  use_lifetime, ra_lifetime,
3810  ra_initial_count, ra_initial_interval,
3811  ra_max_interval, ra_min_interval, is_no);
3812  }
3813  else
3814  {
3815  u32 valid_lifetime_in_secs = 0;
3816  u32 pref_lifetime_in_secs = 0;
3817  u8 use_prefix_default_values = 0;
3818  u8 no_advertise = 0;
3819  u8 off_link = 0;
3820  u8 no_autoconfig = 0;
3821  u8 no_onlink = 0;
3822 
3823  /* get the rest of the command */
3824  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3825  {
3826  if (unformat (line_input, "default"))
3827  {
3828  use_prefix_default_values = 1;
3829  break;
3830  }
3831  else if (unformat (line_input, "infinite"))
3832  {
3833  valid_lifetime_in_secs = ~0;
3834  pref_lifetime_in_secs = ~0;
3835  break;
3836  }
3837  else if (unformat (line_input, "%d %d", &valid_lifetime_in_secs,
3838  &pref_lifetime_in_secs))
3839  break;
3840  else
3841  break;
3842  }
3843 
3844 
3845  /* get the rest of the command */
3846  while (!use_prefix_default_values &&
3847  unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3848  {
3849  if (unformat (line_input, "no-advertise"))
3850  no_advertise = 1;
3851  else if (unformat (line_input, "off-link"))
3852  off_link = 1;
3853  else if (unformat (line_input, "no-autoconfig"))
3854  no_autoconfig = 1;
3855  else if (unformat (line_input, "no-onlink"))
3856  no_onlink = 1;
3857  else
3858  {
3859  error = unformat_parse_error (line_input);
3860  goto done;
3861  }
3862  }
3863 
3864  ip6_neighbor_ra_prefix (vm, sw_if_index,
3865  &ip6_addr, addr_len,
3866  use_prefix_default_values,
3867  valid_lifetime_in_secs,
3868  pref_lifetime_in_secs,
3869  no_advertise,
3870  off_link, no_autoconfig, no_onlink, is_no);
3871  }
3872 
3873 done:
3874  unformat_free (line_input);
3875 
3876  return error;
3877 }
3878 
3879 static void
3880 ip6_print_addrs (vlib_main_t * vm, u32 * addrs)
3881 {
3882  ip_lookup_main_t *lm = &ip6_main.lookup_main;
3883  u32 i;
3884 
3885  for (i = 0; i < vec_len (addrs); i++)
3886  {
3887  ip_interface_address_t *a =
3888  pool_elt_at_index (lm->if_address_pool, addrs[i]);
3889  ip6_address_t *address = ip_interface_address_get_address (lm, a);
3890 
3891  vlib_cli_output (vm, "\t\t%U/%d",
3892  format_ip6_address, address, a->address_length);
3893  }
3894 }
3895 
3896 static clib_error_t *
3897 show_ip6_interface_cmd (vlib_main_t * vm,
3898  unformat_input_t * input, vlib_cli_command_t * cmd)
3899 {
3900  vnet_main_t *vnm = vnet_get_main ();
3901  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3902  clib_error_t *error = 0;
3903  u32 sw_if_index;
3904 
3905  sw_if_index = ~0;
3906 
3907  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
3908  {
3909  u32 ri;
3910 
3911  /* look up the radv_t information for this interface */
3912  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
3913  sw_if_index, ~0);
3914 
3915  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3916 
3917  if (ri != ~0)
3918  {
3919  ip_lookup_main_t *lm = &ip6_main.lookup_main;
3920  ip6_radv_t *radv_info;
3921  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3922 
3923  vlib_cli_output (vm, "%U is admin %s\n",
3924  format_vnet_sw_interface_name, vnm,
3925  vnet_get_sw_interface (vnm, sw_if_index),
3926  (vnet_sw_interface_is_admin_up (vnm, sw_if_index) ?
3927  "up" : "down"));
3928 
3929  u32 ai;
3930  u32 *link_scope = 0, *global_scope = 0;
3931  u32 *local_scope = 0, *unknown_scope = 0;
3932  ip_interface_address_t *a;
3933 
3934  vec_validate_init_empty (lm->if_address_pool_index_by_sw_if_index,
3935  sw_if_index, ~0);
3936  ai = lm->if_address_pool_index_by_sw_if_index[sw_if_index];
3937 
3938  while (ai != (u32) ~ 0)
3939  {
3940  a = pool_elt_at_index (lm->if_address_pool, ai);
3941  ip6_address_t *address =
3942  ip_interface_address_get_address (lm, a);
3943 
3944  if (ip6_address_is_link_local_unicast (address))
3945  vec_add1 (link_scope, ai);
3946  else if (ip6_address_is_global_unicast (address))
3947  vec_add1 (global_scope, ai);
3948  else if (ip6_address_is_local_unicast (address))
3949  vec_add1 (local_scope, ai);
3950  else
3951  vec_add1 (unknown_scope, ai);
3952 
3953  ai = a->next_this_sw_interface;
3954  }
3955 
3956  if (vec_len (link_scope))
3957  {
3958  vlib_cli_output (vm, "\tLink-local address(es):\n");
3959  ip6_print_addrs (vm, link_scope);
3960  vec_free (link_scope);
3961  }
3962 
3963  if (vec_len (local_scope))
3964  {
3965  vlib_cli_output (vm, "\tLocal unicast address(es):\n");
3966  ip6_print_addrs (vm, local_scope);
3967  vec_free (local_scope);
3968  }
3969 
3970  if (vec_len (global_scope))
3971  {
3972  vlib_cli_output (vm, "\tGlobal unicast address(es):\n");
3973  ip6_print_addrs (vm, global_scope);
3974  vec_free (global_scope);
3975  }
3976 
3977  if (vec_len (unknown_scope))
3978  {
3979  vlib_cli_output (vm, "\tOther-scope address(es):\n");
3980  ip6_print_addrs (vm, unknown_scope);
3981  vec_free (unknown_scope);
3982  }
3983 
3984  vlib_cli_output (vm, "\tLink-local address(es):\n");
3985  vlib_cli_output (vm, "\t\t%U\n", format_ip6_address,
3986  &radv_info->link_local_address);
3987 
3988  vlib_cli_output (vm, "\tJoined group address(es):\n");
3989  ip6_mldp_group_t *m;
3990  /* *INDENT-OFF* */
3991  pool_foreach (m, radv_info->mldp_group_pool,
3992  ({
3993  vlib_cli_output (vm, "\t\t%U\n", format_ip6_address,
3994  &m->mcast_address);
3995  }));
3996  /* *INDENT-ON* */
3997 
3998  vlib_cli_output (vm, "\tAdvertised Prefixes:\n");
3999  ip6_radv_prefix_t *p;
4000  /* *INDENT-OFF* */
4001  pool_foreach (p, radv_info->adv_prefixes_pool,
4002  ({
4003  vlib_cli_output (vm, "\t\tprefix %U, length %d\n",
4004  format_ip6_address, &p->prefix, p->prefix_len);
4005  }));
4006  /* *INDENT-ON* */
4007 
4008  vlib_cli_output (vm, "\tMTU is %d\n", radv_info->adv_link_mtu);
4009  vlib_cli_output (vm, "\tICMP error messages are unlimited\n");
4010  vlib_cli_output (vm, "\tICMP redirects are disabled\n");
4011  vlib_cli_output (vm, "\tICMP unreachables are not sent\n");
4012  vlib_cli_output (vm, "\tND DAD is disabled\n");
4013  //vlib_cli_output (vm, "\tND reachable time is %d milliseconds\n",);
4014  vlib_cli_output (vm, "\tND advertised reachable time is %d\n",
4015  radv_info->adv_neighbor_reachable_time_in_msec);
4016  vlib_cli_output (vm,
4017  "\tND advertised retransmit interval is %d (msec)\n",
4018  radv_info->
4019  adv_time_in_msec_between_retransmitted_neighbor_solicitations);
4020 
4021  u32 ra_interval = radv_info->max_radv_interval;
4022  u32 ra_interval_min = radv_info->min_radv_interval;
4023  vlib_cli_output (vm,
4024  "\tND router advertisements are sent every %d seconds (min interval is %d)\n",
4025  ra_interval, ra_interval_min);
4026  vlib_cli_output (vm,
4027  "\tND router advertisements live for %d seconds\n",
4028  radv_info->adv_router_lifetime_in_sec);
4029  vlib_cli_output (vm,
4030  "\tHosts %s stateless autoconfig for addresses\n",
4031  (radv_info->adv_managed_flag) ? "use" :
4032  " don't use");
4033  vlib_cli_output (vm, "\tND router advertisements sent %d\n",
4034  radv_info->n_advertisements_sent);
4035  vlib_cli_output (vm, "\tND router solicitations received %d\n",
4036  radv_info->n_solicitations_rcvd);
4037  vlib_cli_output (vm, "\tND router solicitations dropped %d\n",
4038  radv_info->n_solicitations_dropped);
4039  }
4040  else
4041  {
4042  error = clib_error_return (0, "IPv6 not enabled on interface",
4043  format_unformat_error, input);
4044 
4045  }
4046  }
4047  return error;
4048 }
4049 
4050 /*?
4051  * This command is used to display various IPv6 attributes on a given
4052  * interface.
4053  *
4054  * @cliexpar
4055  * Example of how to display IPv6 settings:
4056  * @cliexstart{show ip6 interface GigabitEthernet2/0/0}
4057  * GigabitEthernet2/0/0 is admin up
4058  * Link-local address(es):
4059  * fe80::ab8/64
4060  * Joined group address(es):
4061  * ff02::1
4062  * ff02::2
4063  * ff02::16
4064  * ff02::1:ff00:ab8
4065  * Advertised Prefixes:
4066  * prefix fe80::fe:28ff:fe9c:75b3, length 64
4067  * MTU is 1500
4068  * ICMP error messages are unlimited
4069  * ICMP redirects are disabled
4070  * ICMP unreachables are not sent
4071  * ND DAD is disabled
4072  * ND advertised reachable time is 0
4073  * ND advertised retransmit interval is 0 (msec)
4074  * ND router advertisements are sent every 200 seconds (min interval is 150)
4075  * ND router advertisements live for 600 seconds
4076  * Hosts use stateless autoconfig for addresses
4077  * ND router advertisements sent 19336
4078  * ND router solicitations received 0
4079  * ND router solicitations dropped 0
4080  * @cliexend
4081  * Example of output if IPv6 is not enabled on the interface:
4082  * @cliexstart{show ip6 interface GigabitEthernet2/0/0}
4083  * show ip6 interface: IPv6 not enabled on interface
4084  * @cliexend
4085 ?*/
4086 /* *INDENT-OFF* */
4087 VLIB_CLI_COMMAND (show_ip6_interface_command, static) =
4088 {
4089  .path = "show ip6 interface",
4090  .function = show_ip6_interface_cmd,
4091  .short_help = "show ip6 interface <interface>",
4092 };
4093 /* *INDENT-ON* */
4094 
4095 clib_error_t *
4096 disable_ip6_interface (vlib_main_t * vm, u32 sw_if_index)
4097 {
4098  clib_error_t *error = 0;
4099  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4100  u32 ri;
4101 
4102  /* look up the radv_t information for this interface */
4103  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
4104  ~0);
4105  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4106 
4107  /* if not created - do nothing */
4108  if (ri != ~0)
4109  {
4110  ip6_radv_t *radv_info;
4111 
4112  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4113 
4114  /* check radv_info ref count for other ip6 addresses on this interface */
4115  /* This implicitly excludes the link local address */
4116  if (radv_info->ref_count == 0)
4117  {
4118  /* essentially "disables" ipv6 on this interface */
4119  ip6_ll_prefix_t ilp = {
4120  .ilp_addr = radv_info->link_local_address,
4121  .ilp_sw_if_index = sw_if_index,
4122  };
4123  ip6_ll_table_entry_delete (&ilp);
4124  ip6_sw_interface_enable_disable (sw_if_index, 0);
4125  ip6_mfib_interface_enable_disable (sw_if_index, 0);
4126  ip6_neighbor_sw_interface_add_del (vnet_get_main (), sw_if_index,
4127  0);
4128  }
4129  }
4130  return error;
4131 }
4132 
4133 int
4134 ip6_interface_enabled (vlib_main_t * vm, u32 sw_if_index)
4135 {
4136  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4137  u32 ri = ~0;
4138 
4139  /* look up the radv_t information for this interface */
4140  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
4141  ~0);
4142 
4143  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4144 
4145  return ri != ~0;
4146 }
4147 
4148 clib_error_t *
4149 enable_ip6_interface (vlib_main_t * vm, u32 sw_if_index)
4150 {
4151  clib_error_t *error = 0;
4152  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4153  u32 ri;
4154  int is_add = 1;
4155 
4156  /* look up the radv_t information for this interface */
4157  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
4158  ~0);
4159 
4160  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4161 
4162  /* if not created yet */
4163  if (ri == ~0)
4164  {
4165  vnet_main_t *vnm = vnet_get_main ();
4166  vnet_sw_interface_t *sw_if0;
4167 
4168  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
4169  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
4170  {
4171  ethernet_interface_t *eth_if0;
4172 
4173  eth_if0 =
4174  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
4175  if (eth_if0)
4176  {
4177  /* create radv_info. for this interface. This holds all the info needed for router adverts */
4178  ri =
4179  ip6_neighbor_sw_interface_add_del (vnm, sw_if_index, is_add);
4180 
4181  if (ri != ~0)
4182  {
4183  ip6_radv_t *radv_info;
4184  ip6_address_t link_local_address;
4185 
4186  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4187 
4188  ip6_link_local_address_from_ethernet_mac_address
4189  (&link_local_address, eth_if0->address);
4190 
4191  sw_if0 = vnet_get_sw_interface (vnm, sw_if_index);
4192  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_SUB ||
4193  sw_if0->type == VNET_SW_INTERFACE_TYPE_P2P)
4194  {
4195  /* make up an interface id */
4196  link_local_address.as_u64[1] =
4197  random_u64 (&radv_info->randomizer);
4198 
4199  link_local_address.as_u64[0] =
4200  clib_host_to_net_u64 (0xFE80000000000000ULL);
4201  /* clear u bit */
4202  link_local_address.as_u8[8] &= 0xfd;
4203  }
4204  {
4205  ip6_ll_prefix_t ilp = {
4206  .ilp_addr = link_local_address,
4207  .ilp_sw_if_index = sw_if_index,
4208  };
4209 
4210  ip6_ll_table_entry_update (&ilp, FIB_ROUTE_PATH_LOCAL);
4211  }
4212 
4213  /* essentially "enables" ipv6 on this interface */
4214  ip6_mfib_interface_enable_disable (sw_if_index, 1);
4215  ip6_sw_interface_enable_disable (sw_if_index, 1);
4216 
4217  if (!error)
4218  {
4219  radv_info->link_local_address = link_local_address;
4220  }
4221  }
4222  }
4223  }
4224  }
4225  return error;
4226 }
4227 
4228 int
4229 ip6_get_ll_address (u32 sw_if_index, ip6_address_t * addr)
4230 {
4231  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4232  ip6_radv_t *radv_info;
4233  u32 ri;
4234 
4235  if (vec_len (nm->if_radv_pool_index_by_sw_if_index) < sw_if_index)
4236  return 0;
4237 
4238  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4239 
4240  if (ri == ~0)
4241  return 0;
4242 
4243  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4244  *addr = radv_info->link_local_address;
4245 
4246  return (!0);
4247 }
4248 
4249 static clib_error_t *
4250 enable_ip6_interface_cmd (vlib_main_t * vm,
4251  unformat_input_t * input, vlib_cli_command_t * cmd)
4252 {
4253  vnet_main_t *vnm = vnet_get_main ();
4254  clib_error_t *error = 0;
4255  u32 sw_if_index;
4256 
4257  sw_if_index = ~0;
4258 
4259  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4260  {
4261  enable_ip6_interface (vm, sw_if_index);
4262  }
4263  else
4264  {
4265  error = clib_error_return (0, "unknown interface\n'",
4266  format_unformat_error, input);
4267 
4268  }
4269  return error;
4270 }
4271 
4272 /*?
4273  * This command is used to enable IPv6 on a given interface.
4274  *
4275  * @cliexpar
4276  * Example of how enable IPv6 on a given interface:
4277  * @cliexcmd{enable ip6 interface GigabitEthernet2/0/0}
4278 ?*/
4279 /* *INDENT-OFF* */
4280 VLIB_CLI_COMMAND (enable_ip6_interface_command, static) =
4281 {
4282  .path = "enable ip6 interface",
4283  .function = enable_ip6_interface_cmd,
4284  .short_help = "enable ip6 interface <interface>",
4285 };
4286 /* *INDENT-ON* */
4287 
4288 static clib_error_t *
4289 disable_ip6_interface_cmd (vlib_main_t * vm,
4290  unformat_input_t * input, vlib_cli_command_t * cmd)
4291 {
4292  vnet_main_t *vnm = vnet_get_main ();
4293  clib_error_t *error = 0;
4294  u32 sw_if_index;
4295 
4296  sw_if_index = ~0;
4297 
4298  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4299  {
4300  error = disable_ip6_interface (vm, sw_if_index);
4301  }
4302  else
4303  {
4304  error = clib_error_return (0, "unknown interface\n'",
4305  format_unformat_error, input);
4306 
4307  }
4308  return error;
4309 }
4310 
4311 /*?
4312  * This command is used to disable IPv6 on a given interface.
4313  *
4314  * @cliexpar
4315  * Example of how disable IPv6 on a given interface:
4316  * @cliexcmd{disable ip6 interface GigabitEthernet2/0/0}
4317 ?*/
4318 /* *INDENT-OFF* */
4319 VLIB_CLI_COMMAND (disable_ip6_interface_command, static) =
4320 {
4321  .path = "disable ip6 interface",
4322  .function = disable_ip6_interface_cmd,
4323  .short_help = "disable ip6 interface <interface>",
4324 };
4325 /* *INDENT-ON* */
4326 
4327 /*?
4328  * This command is used to configure the neighbor discovery
4329  * parameters on a given interface. Use the '<em>show ip6 interface</em>'
4330  * command to display some of the current neighbor discovery parameters
4331  * on a given interface. This command has three formats:
4332  *
4333  *
4334  * <b>Format 1 - Router Advertisement Options:</b> (Only one can be entered in a single command)
4335  *
4336  * '<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>'
4337  *
4338  * Where:
4339  *
4340  * <em>[no] ra-managed-config-flag</em> - Advertises in ICMPv6
4341  * router-advertisement messages to use stateful address
4342  * auto-configuration to obtain address information (sets the M-bit).
4343  * Default is the M-bit is not set and the '<em>no</em>' option
4344  * returns it to this default state.
4345  *
4346  * <em>[no] ra-other-config-flag</em> - Indicates in ICMPv6
4347  * router-advertisement messages that hosts use stateful auto
4348  * configuration to obtain nonaddress related information (sets
4349  * the O-bit). Default is the O-bit is not set and the '<em>no</em>'
4350  * option returns it to this default state.
4351  *
4352  * <em>[no] ra-suppress</em> - Disables sending ICMPv6 router-advertisement
4353  * messages. The '<em>no</em>' option implies to enable sending ICMPv6
4354  * router-advertisement messages.
4355  *
4356  * <em>[no] ra-suppress-link-layer</em> - Indicates not to include the
4357  * optional source link-layer address in the ICMPv6 router-advertisement
4358  * messages. Default is to include the optional source link-layer address
4359  * and the '<em>no</em>' option returns it to this default state.
4360  *
4361  * <em>[no] ra-send-unicast</em> - Use the source address of the
4362  * router-solicitation message if availiable. The default is to use
4363  * multicast address of all nodes, and the '<em>no</em>' option returns
4364  * it to this default state.
4365  *
4366  * <em>[no] ra-lifetime <lifetime></em> - Advertises the lifetime of a
4367  * default router in ICMPv6 router-advertisement messages. The range is
4368  * from 0 to 9000 seconds. '<em><lifetime></em>' must be greater than
4369  * '<em><max-interval></em>'. The default value is 600 seconds and the
4370  * '<em>no</em>' option returns it to this default value.
4371  *
4372  * <em>[no] ra-initial <cnt> <interval></em> - Number of initial ICMPv6
4373  * router-advertisement messages sent and the interval between each
4374  * message. Range for count is 1 - 3 and default is 3. Range for interval
4375  * is 1 to 16 seconds, and default is 16 seconds. The '<em>no</em>' option
4376  * returns both to their default value.
4377  *
4378  * <em>[no] ra-interval <max-interval> [<min-interval>]</em> - Configures the
4379  * interval between sending ICMPv6 router-advertisement messages. The
4380  * range for max-interval is from 4 to 200 seconds. min-interval can not
4381  * be more than 75% of max-interval. If not set, min-interval will be
4382  * set to 75% of max-interval. The range for min-interval is from 3 to
4383  * 150 seconds. The '<em>no</em>' option returns both to their default
4384  * value.
4385  *
4386  * <em>[no] ra-cease</em> - Cease sending ICMPv6 router-advertisement messages.
4387  * The '<em>no</em>' options implies to start (or restart) sending
4388  * ICMPv6 router-advertisement messages.
4389  *
4390  *
4391  * <b>Format 2 - Prefix Options:</b>
4392  *
4393  * '<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>'
4394  *
4395  * Where:
4396  *
4397  * <em>no</em> - All additional flags are ignored and the prefix is deleted.
4398  *
4399  * <em><valid-lifetime> <pref-lifetime></em> - '<em><valid-lifetime></em>' is the
4400  * length of time in seconds during what the prefix is valid for the purpose of
4401  * on-link determination. Range is 7203 to 2592000 seconds and default is 2592000
4402  * seconds (30 days). '<em><pref-lifetime></em>' is the prefered-lifetime and is the
4403  * length of time in seconds during what addresses generated from the prefix remain
4404  * preferred. Range is 0 to 604800 seconds and default is 604800 seconds (7 days).
4405  *
4406  * <em>infinite</em> - Both '<em><valid-lifetime></em>' and '<em><<pref-lifetime></em>'
4407  * are inifinte, no timeout.
4408  *
4409  * <em>no-advertise</em> - Do not send full router address in prefix
4410  * advertisement. Default is to advertise (i.e. - This flag is off by default).
4411  *
4412  * <em>off-link</em> - Prefix is off-link, clear L-bit in packet. Default is on-link
4413  * (i.e. - This flag is off and L-bit in packet is set by default and this prefix can
4414  * be used for on-link determination). '<em>no-onlink</em>' also controls the L-bit.
4415  *
4416  * <em>no-autoconfig</em> - Do not use prefix for autoconfiguration, clear A-bit in packet.
4417  * Default is autoconfig (i.e. - This flag is off and A-bit in packet is set by default.
4418  *
4419  * <em>no-onlink</em> - Do not use prefix for onlink determination, clear L-bit in packet.
4420  * Default is on-link (i.e. - This flag is off and L-bit in packet is set by default and
4421  * this prefix can be used for on-link determination). '<em>off-link</em>' also controls
4422  * the L-bit.
4423  *
4424  *
4425  * <b>Format 3: - Default of Prefix:</b>
4426  *
4427  * '<em><b>ip6 nd <interface> [no] prefix <ip6-address>/<width> default</b></em>'
4428  *
4429  * When a new prefix is added (or existing one is being overwritten) <em>default</em>
4430  * uses default values for the prefix. If <em>no</em> is used, the <em>default</em>
4431  * is ignored and the prefix is deleted.
4432  *
4433  *
4434  * @cliexpar
4435  * Example of how set a router advertisement option:
4436  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 ra-interval 100 20}
4437  * Example of how to add a prefix:
4438  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 prefix fe80::fe:28ff:fe9c:75b3/64 infinite no-advertise}
4439  * Example of how to delete a prefix:
4440  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 no prefix fe80::fe:28ff:fe9c:75b3/64}
4441 ?*/
4442 /* *INDENT-OFF* */
4443 VLIB_CLI_COMMAND (ip6_nd_command, static) =
4444 {
4445  .path = "ip6 nd",
4446  .short_help = "ip6 nd <interface> ...",
4447  .function = ip6_neighbor_cmd,
4448 };
4449 /* *INDENT-ON* */
4450 
4451 clib_error_t *
4452 set_ip6_link_local_address (vlib_main_t * vm,
4453  u32 sw_if_index, ip6_address_t * address)
4454 {
4455  clib_error_t *error = 0;
4456  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4457  u32 ri;
4458  ip6_radv_t *radv_info;
4459  vnet_main_t *vnm = vnet_get_main ();
4460 
4461  if (!ip6_address_is_link_local_unicast (address))
4462  {
4463  vnm->api_errno = VNET_API_ERROR_ADDRESS_NOT_LINK_LOCAL;
4464  return (error = clib_error_return (0, "address not link-local",
4465  format_unformat_error));
4466  }
4467 
4468  /* call enable ipv6 */
4469  enable_ip6_interface (vm, sw_if_index);
4470 
4471  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4472 
4473  if (ri != ~0)
4474  {
4475  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4476 
4477  /* save if link local address (overwrite default) */
4478 
4479  /* delete the old one */
4480  error = ip6_add_del_interface_address (vm, sw_if_index,
4481  &radv_info->link_local_address,
4482  128, 1 /* is_del */ );
4483 
4484  if (!error)
4485  {
4486  /* add the new one */
4487  error = ip6_add_del_interface_address (vm, sw_if_index,
4488  address, 128,
4489  0 /* is_del */ );
4490 
4491  if (!error)
4492  {
4493  radv_info->link_local_address = *address;
4494  }
4495  }
4496  }
4497  else
4498  {
4499  vnm->api_errno = VNET_API_ERROR_IP6_NOT_ENABLED;
4500  error = clib_error_return (0, "ip6 not enabled for interface",
4501  format_unformat_error);
4502  }
4503  return error;
4504 }
4505 
4506 clib_error_t *
4507 set_ip6_link_local_address_cmd (vlib_main_t * vm,
4508  unformat_input_t * input,
4509  vlib_cli_command_t * cmd)
4510 {
4511  vnet_main_t *vnm = vnet_get_main ();
4512  clib_error_t *error = 0;
4513  u32 sw_if_index;
4514  ip6_address_t ip6_addr;
4515 
4516  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4517  {
4518  /* get the rest of the command */
4519  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
4520  {
4521  if (unformat (input, "%U", unformat_ip6_address, &ip6_addr))
4522  break;
4523  else
4524  return (unformat_parse_error (input));
4525  }
4526  }
4527  error = set_ip6_link_local_address (vm, sw_if_index, &ip6_addr);
4528  return error;
4529 }
4530 
4531 /*?
4532  * This command is used to assign an IPv6 Link-local address to an
4533  * interface. This command will enable IPv6 on an interface if it
4534  * is not already enabled. Use the '<em>show ip6 interface</em>' command
4535  * to display the assigned Link-local address.
4536  *
4537  * @cliexpar
4538  * Example of how to assign an IPv6 Link-local address to an interface:
4539  * @cliexcmd{set ip6 link-local address GigabitEthernet2/0/0 FE80::AB8}
4540 ?*/
4541 /* *INDENT-OFF* */
4542 VLIB_CLI_COMMAND (set_ip6_link_local_address_command, static) =
4543 {
4544  .path = "set ip6 link-local address",
4545  .short_help = "set ip6 link-local address <interface> <ip6-address>",
4546  .function = set_ip6_link_local_address_cmd,
4547 };
4548 /* *INDENT-ON* */
4549 
4550 /**
4551  * @brief callback when an interface address is added or deleted
4552  */
4553 static void
4554 ip6_neighbor_add_del_interface_address (ip6_main_t * im,
4555  uword opaque,
4556  u32 sw_if_index,
4557  ip6_address_t * address,
4558  u32 address_length,
4559  u32 if_address_index, u32 is_delete)
4560 {
4561  vnet_main_t *vnm = vnet_get_main ();
4562  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4563  u32 ri;
4564  vlib_main_t *vm = vnm->vlib_main;
4565  ip6_radv_t *radv_info;
4566  ip6_address_t a;
4567 
4568  /* create solicited node multicast address for this interface adddress */
4569  ip6_set_solicited_node_multicast_address (&a, 0);
4570 
4571  a.as_u8[0xd] = address->as_u8[0xd];
4572  a.as_u8[0xe] = address->as_u8[0xe];
4573  a.as_u8[0xf] = address->as_u8[0xf];
4574 
4575  if (!is_delete)
4576  {
4577  /* try to create radv_info - does nothing if ipv6 already enabled */
4578  enable_ip6_interface (vm, sw_if_index);
4579 
4580  /* look up the radv_t information for this interface */
4581  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
4582  sw_if_index, ~0);
4583  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4584  if (ri != ~0)
4585  {
4586  /* get radv_info */
4587  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4588 
4589  /* add address */
4590  if (!ip6_address_is_link_local_unicast (address))
4591  radv_info->ref_count++;
4592 
4593  ip6_neighbor_add_mld_prefix (radv_info, &a);
4594  }
4595  }
4596  else
4597  {
4598 
4599  /* delete */
4600  /* look up the radv_t information for this interface */
4601  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
4602  sw_if_index, ~0);
4603  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
4604 
4605  if (ri != ~0)
4606  {
4607  /* get radv_info */
4608  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
4609 
4610  ip6_neighbor_del_mld_prefix (radv_info, &a);
4611 
4612  /* if interface up send MLDP "report" */
4613  radv_info->all_routers_mcast = 0;
4614 
4615  /* add address */
4616  if (!ip6_address_is_link_local_unicast (address))
4617  radv_info->ref_count--;
4618  }
4619  /* Ensure that IPv6 is disabled, and LL removed after ref_count reaches 0 */
4620  disable_ip6_interface (vm, sw_if_index);
4621  }
4622 }
4623 
4624 clib_error_t *
4625 ip6_set_neighbor_limit (u32 neighbor_limit)
4626 {
4627  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4628 
4629  nm->limit_neighbor_cache_size = neighbor_limit;
4630  return 0;
4631 }
4632 
4633 static void
4634 ip6_neighbor_table_bind (ip6_main_t * im,
4635  uword opaque,
4636  u32 sw_if_index,
4637  u32 new_fib_index, u32 old_fib_index)
4638 {
4639  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4640  ip6_neighbor_t *n = NULL;
4641  u32 i, *to_re_add = 0;
4642 
4643  /* *INDENT-OFF* */
4644  pool_foreach (n, nm->neighbor_pool,
4645  ({
4646  if (n->key.sw_if_index == sw_if_index)
4647  vec_add1 (to_re_add, n - nm->neighbor_pool);
4648  }));
4649  /* *INDENT-ON* */
4650 
4651  for (i = 0; i < vec_len (to_re_add); i++)
4652  {
4653  n = pool_elt_at_index (nm->neighbor_pool, to_re_add[i]);
4654  ip6_neighbor_adj_fib_remove (n, old_fib_index);
4655  ip6_neighbor_adj_fib_add (n, new_fib_index);
4656  }
4657  vec_free (to_re_add);
4658 }
4659 
4660 static clib_error_t *
4661 ip6_neighbor_init (vlib_main_t * vm)
4662 {
4663  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4664  ip6_main_t *im = &ip6_main;
4665 
4666  mhash_init (&nm->neighbor_index_by_key,
4667  /* value size */ sizeof (uword),
4668  /* key size */ sizeof (ip6_neighbor_key_t));
4669 
4670  icmp6_register_type (vm, ICMP6_neighbor_solicitation,
4671  ip6_icmp_neighbor_solicitation_node.index);
4672  icmp6_register_type (vm, ICMP6_neighbor_advertisement,
4673  ip6_icmp_neighbor_advertisement_node.index);
4674  icmp6_register_type (vm, ICMP6_router_solicitation,
4675  ip6_icmp_router_solicitation_node.index);
4676  icmp6_register_type (vm, ICMP6_router_advertisement,
4677  ip6_icmp_router_advertisement_node.index);
4678 
4679  /* handler node for ip6 neighbor discovery events and timers */
4680  vlib_register_node (vm, &ip6_icmp_neighbor_discovery_event_node);
4681 
4682  /* add call backs */
4683  ip6_add_del_interface_address_callback_t cb;
4684  memset (&cb, 0x0, sizeof (ip6_add_del_interface_address_callback_t));
4685 
4686  /* when an interface address changes... */
4687  cb.function = ip6_neighbor_add_del_interface_address;
4688  cb.function_opaque = 0;
4689  vec_add1 (im->add_del_interface_address_callbacks, cb);
4690 
4691  ip6_table_bind_callback_t cbt;
4692  cbt.function = ip6_neighbor_table_bind;
4693  cbt.function_opaque = 0;
4694  vec_add1 (im->table_bind_callbacks, cbt);
4695 
4696  mhash_init (&nm->pending_resolutions_by_address,
4697  /* value size */ sizeof (uword),
4698  /* key size */ sizeof (ip6_address_t));
4699 
4700  mhash_init (&nm->mac_changes_by_address,
4701  /* value size */ sizeof (uword),
4702  /* key size */ sizeof (ip6_address_t));
4703 
4704  /* default, configurable */
4705  nm->limit_neighbor_cache_size = 50000;
4706 
4707  nm->wc_ip6_nd_publisher_node = (uword) ~ 0;
4708 
4709  nm->ip6_ra_publisher_node = (uword) ~ 0;
4710 
4711 #if 0
4712  /* $$$$ Hack fix for today */
4713  vec_validate_init_empty
4714  (im->discover_neighbor_next_index_by_hw_if_index, 32, 0 /* drop */ );
4715 #endif
4716 
4717  return 0;
4718 }
4719 
4720 VLIB_INIT_FUNCTION (ip6_neighbor_init);
4721 
4722 
4723 void
4724 vnet_register_ip6_neighbor_resolution_event (vnet_main_t * vnm,
4725  void *address_arg,
4726  uword node_index,
4727  uword type_opaque, uword data)
4728 {
4729  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4730  ip6_address_t *address = address_arg;
4731  uword *p;
4732  pending_resolution_t *pr;
4733 
4734  pool_get (nm->pending_resolutions, pr);
4735 
4736  pr->next_index = ~0;
4737  pr->node_index = node_index;
4738  pr->type_opaque = type_opaque;
4739  pr->data = data;
4740 
4741  p = mhash_get (&nm->pending_resolutions_by_address, address);
4742  if (p)
4743  {
4744  /* Insert new resolution at the head of the list */
4745  pr->next_index = p[0];
4746  mhash_unset (&nm->pending_resolutions_by_address, address, 0);
4747  }
4748 
4749  mhash_set (&nm->pending_resolutions_by_address, address,
4750  pr - nm->pending_resolutions, 0 /* old value */ );
4751 }
4752 
4753 int
4754 vnet_add_del_ip6_nd_change_event (vnet_main_t * vnm,
4755  void *data_callback,
4756  u32 pid,
4757  void *address_arg,
4758  uword node_index,
4759  uword type_opaque, uword data, int is_add)
4760 {
4761  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4762  ip6_address_t *address = address_arg;
4763 
4764  /* Try to find an existing entry */
4765  u32 *first = (u32 *) mhash_get (&nm->mac_changes_by_address, address);
4766  u32 *p = first;
4767  pending_resolution_t *mc;
4768  while (p && *p != ~0)
4769  {
4770  mc = pool_elt_at_index (nm->mac_changes, *p);
4771  if (mc->node_index == node_index && mc->type_opaque == type_opaque
4772  && mc->pid == pid)
4773  break;
4774  p = &mc->next_index;
4775  }
4776 
4777  int found = p && *p != ~0;
4778  if (is_add)
4779  {
4780  if (found)
4781  return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
4782 
4783  pool_get (nm->mac_changes, mc);
4784  /* *INDENT-OFF* */
4785  *mc = (pending_resolution_t)
4786  {
4787  .next_index = ~0,
4788  .node_index = node_index,
4789  .type_opaque = type_opaque,
4790  .data = data,
4791  .data_callback = data_callback,
4792  .pid = pid,
4793  };
4794  /* *INDENT-ON* */
4795 
4796  /* Insert new resolution at the end of the list */
4797  u32 new_idx = mc - nm->mac_changes;
4798  if (p)
4799  p[0] = new_idx;
4800  else
4801  mhash_set (&nm->mac_changes_by_address, address, new_idx, 0);
4802  }
4803  else
4804  {
4805  if (!found)
4806  return VNET_API_ERROR_NO_SUCH_ENTRY;
4807 
4808  /* Clients may need to clean up pool entries, too */
4809  void (*fp) (u32, u8 *) = data_callback;
4810  if (fp)
4811  (*fp) (mc->data, 0 /* no new mac addrs */ );
4812 
4813  /* Remove the entry from the list and delete the entry */
4814  *p = mc->next_index;
4815  pool_put (nm->mac_changes, mc);
4816 
4817  /* Remove from hash if we deleted the last entry */
4818  if (*p == ~0 && p == first)
4819  mhash_unset (&nm->mac_changes_by_address, address, 0);
4820  }
4821  return 0;
4822 }
4823 
4824 int
4825 vnet_ip6_nd_term (vlib_main_t * vm,
4826  vlib_node_runtime_t * node,
4827  vlib_buffer_t * p0,
4828  ethernet_header_t * eth,
4829  ip6_header_t * ip, u32 sw_if_index, u16 bd_index)
4830 {
4831  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4832  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
4833 
4834  ndh = ip6_next_header (ip);
4835  if (ndh->icmp.type != ICMP6_neighbor_solicitation &&
4836  ndh->icmp.type != ICMP6_neighbor_advertisement)
4837  return 0;
4838 
4839  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
4840  (p0->flags & VLIB_BUFFER_IS_TRACED)))
4841  {
4842  u8 *t0 = vlib_add_trace (vm, node, p0,
4843  sizeof (icmp6_input_trace_t));
4844  clib_memcpy (t0, ip, sizeof (icmp6_input_trace_t));
4845  }
4846 
4847  /* Check if anyone want ND events for L2 BDs */
4848  if (PREDICT_FALSE
4849  (nm->wc_ip6_nd_publisher_node != (uword) ~ 0
4850  && !ip6_address_is_link_local_unicast (&ip->src_address)))
4851  {
4852  vnet_nd_wc_publish (sw_if_index, eth->src_address, &ip->src_address);
4853  }
4854 
4855  /* Check if MAC entry exsist for solicited target IP */
4856  if (ndh->icmp.type == ICMP6_neighbor_solicitation)
4857  {
4858  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
4859  l2_bridge_domain_t *bd_config;
4860  u8 *macp;
4861 
4862  opt = (void *) (ndh + 1);
4863  if ((opt->header.type !=
4864  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address) ||
4865  (opt->header.n_data_u64s != 1))
4866  return 0; /* source link layer address option not present */
4867 
4868  bd_config = vec_elt_at_index (l2input_main.bd_configs, bd_index);
4869  macp =
4870  (u8 *) hash_get_mem (bd_config->mac_by_ip6, &ndh->target_address);
4871  if (macp)
4872  { /* found ip-mac entry, generate eighbor advertisement response */
4873  int bogus_length;
4874  vlib_node_runtime_t *error_node =
4875  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
4876  ip->dst_address = ip->src_address;
4877  ip->src_address = ndh->target_address;
4878  ip->hop_limit = 255;
4879  opt->header.type =
4880  ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
4881  clib_memcpy (opt->ethernet_address, macp, 6);
4882  ndh->icmp.type = ICMP6_neighbor_advertisement;
4883  ndh->advertisement_flags = clib_host_to_net_u32
4884  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
4885  ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
4886  ndh->icmp.checksum = 0;
4887  ndh->icmp.checksum =
4888  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip, &bogus_length);
4889  clib_memcpy (eth->dst_address, eth->src_address, 6);
4890  clib_memcpy (eth->src_address, macp, 6);
4891  vlib_error_count (vm, error_node->node_index,
4892  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_TX, 1);
4893  return 1;
4894  }
4895  }
4896 
4897  return 0;
4898 
4899 }
4900 
4901 int
4902 ip6_neighbor_proxy_add_del (u32 sw_if_index, ip6_address_t * addr, u8 is_del)
4903 {
4904  u32 fib_index;
4905 
4906  fib_prefix_t pfx = {
4907  .fp_len = 128,
4908  .fp_proto = FIB_PROTOCOL_IP6,
4909  .fp_addr = {
4910  .ip6 = *addr,
4911  },
4912  };
4913  ip46_address_t nh = {
4914  .ip6 = *addr,
4915  };
4916 
4917  fib_index = ip6_fib_table_get_index_for_sw_if_index (sw_if_index);
4918 
4919  if (~0 == fib_index)
4920  return VNET_API_ERROR_NO_SUCH_FIB;
4921 
4922  if (is_del)
4923  {
4924  fib_table_entry_path_remove (fib_index,
4925  &pfx,
4926  FIB_SOURCE_IP6_ND_PROXY,
4927  DPO_PROTO_IP6,
4928  &nh,
4929  sw_if_index,
4930  ~0, 1, FIB_ROUTE_PATH_FLAG_NONE);
4931  /* flush the ND cache of this address if it's there */
4932  vnet_unset_ip6_ethernet_neighbor (vlib_get_main (),
4933  sw_if_index, addr, NULL, 0);
4934  }
4935  else
4936  {
4937  fib_table_entry_path_add (fib_index,
4938  &pfx,
4939  FIB_SOURCE_IP6_ND_PROXY,
4940  FIB_ENTRY_FLAG_NONE,
4941  DPO_PROTO_IP6,
4942  &nh,
4943  sw_if_index,
4944  ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
4945  }
4946  return (0);
4947 }
4948 
4949 static clib_error_t *
4950 set_ip6_nd_proxy_cmd (vlib_main_t * vm,
4951  unformat_input_t * input, vlib_cli_command_t * cmd)
4952 {
4953  vnet_main_t *vnm = vnet_get_main ();
4954  clib_error_t *error = 0;
4955  ip6_address_t addr;
4956  u32 sw_if_index;
4957  u8 is_del = 0;
4958 
4959  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4960  {
4961  /* get the rest of the command */
4962  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
4963  {
4964  if (unformat (input, "%U", unformat_ip6_address, &addr))
4965  break;
4966  else if (unformat (input, "delete") || unformat (input, "del"))
4967  is_del = 1;
4968  else
4969  return (unformat_parse_error (input));
4970  }
4971  }
4972 
4973  ip6_neighbor_proxy_add_del (sw_if_index, &addr, is_del);
4974 
4975  return error;
4976 }
4977 
4978 /* *INDENT-OFF* */
4979 VLIB_CLI_COMMAND (set_ip6_nd_proxy_command, static) =
4980 {
4981  .path = "set ip6 nd proxy",
4982  .short_help = "set ip6 nd proxy <HOST> <INTERFACE>",
4983  .function = set_ip6_nd_proxy_cmd,
4984 };
4985 /* *INDENT-ON* */
4986 
4987 void
4988 ethernet_ndp_change_mac (u32 sw_if_index)
4989 {
4990  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4991  ip6_neighbor_t *n;
4992  adj_index_t ai;
4993 
4994  /* *INDENT-OFF* */
4995  pool_foreach (n, nm->neighbor_pool,
4996  ({
4997  if (n->key.sw_if_index == sw_if_index)
4998  {
4999  adj_nbr_walk_nh6 (sw_if_index,
5000  &n->key.ip6_address,
5001  ip6_nd_mk_complete_walk, n);
5002  }
5003  }));
5004  /* *INDENT-ON* */
5005 
5006  ai = adj_glean_get (FIB_PROTOCOL_IP6, sw_if_index);
5007 
5008  if (ADJ_INDEX_INVALID != ai)
5009  adj_glean_update_rewrite (ai);
5010 }
5011 
5012 void
5013 send_ip6_na (vlib_main_t * vm, u32 sw_if_index)
5014 {
5015  ip6_main_t *i6m = &ip6_main;
5016  ip6_address_t *ip6_addr = ip6_interface_first_address (i6m, sw_if_index);
5017 
5018  send_ip6_na_w_addr (vm, ip6_addr, sw_if_index);
5019 }
5020 
5021 void
5022 send_ip6_na_w_addr (vlib_main_t * vm,
5023  const ip6_address_t * ip6_addr, u32 sw_if_index)
5024 {
5025  ip6_main_t *i6m = &ip6_main;
5026  vnet_main_t *vnm = vnet_get_main ();
5027  u8 *rewrite, rewrite_len;
5028  vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
5029  u8 dst_address[6];
5030 
5031  if (ip6_addr)
5032  {
5033  clib_warning
5034  ("Sending unsolicitated NA IP6 address %U on sw_if_idex %d",
5035  format_ip6_address, ip6_addr, sw_if_index);
5036 
5037  /* Form unsolicited neighbor advertisement packet from NS pkt template */
5038  int bogus_length;
5039  u32 bi = 0;
5040  icmp6_neighbor_solicitation_header_t *h =
5041  vlib_packet_template_get_packet (vm,
5042  &i6m->discover_neighbor_packet_template,
5043  &bi);
5044  if (!h)
5045  return;
5046 
5047  ip6_set_reserved_multicast_address (&h->ip.dst_address,
5048  IP6_MULTICAST_SCOPE_link_local,
5049  IP6_MULTICAST_GROUP_ID_all_hosts);
5050  h->ip.src_address = ip6_addr[0];
5051  h->neighbor.icmp.type = ICMP6_neighbor_advertisement;
5052  h->neighbor.target_address = ip6_addr[0];
5053  h->neighbor.advertisement_flags = clib_host_to_net_u32
5054  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
5055  clib_memcpy (h->link_layer_option.ethernet_address,
5056  hi->hw_address, vec_len (hi->hw_address));
5057  h->neighbor.icmp.checksum =
5058  ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h->ip, &bogus_length);
5059  ASSERT (bogus_length == 0);
5060 
5061  /* Setup MAC header with IP6 Etype and mcast DMAC */
5062  vlib_buffer_t *b = vlib_get_buffer (vm, bi);
5063  ip6_multicast_ethernet_address (dst_address,
5064  IP6_MULTICAST_GROUP_ID_all_hosts);
5065  rewrite =
5066  ethernet_build_rewrite (vnm, sw_if_index, VNET_LINK_IP6, dst_address);
5067  rewrite_len = vec_len (rewrite);
5068  vlib_buffer_advance (b, -rewrite_len);
5069  ethernet_header_t *e = vlib_buffer_get_current (b);
5070  clib_memcpy (e->dst_address, rewrite, rewrite_len);
5071  vec_free (rewrite);
5072 
5073  /* Send unsolicited ND advertisement packet out the specified interface */
5074  vnet_buffer (b)->sw_if_index[VLIB_RX] =
5075  vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index;
5076  vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index);
5077  u32 *to_next = vlib_frame_vector_args (f);
5078  to_next[0] = bi;
5079  f->n_vectors = 1;
5080  vlib_put_frame_to_node (vm, hi->output_node_index, f);
5081  }
5082 }
5083 
5084 /*
5085  * fd.io coding-style-patch-verification: ON
5086  *
5087  * Local Variables:
5088  * eval: (c-set-style "gnu")
5089  * End:
5090  */
ip6_radv_t::due_time
f64 due_time
Definition: ip6_neighbor.c:162
ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
#define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
vec_validate
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:437
ra_report_prefix_info_t
Definition: ip6_neighbor.h:118
ip6_neighbor_main_t::if_radv_pool
ip6_radv_t * if_radv_pool
Definition: ip6_neighbor.c:201
MIN_DELAY_BETWEEN_RAS
#define MIN_DELAY_BETWEEN_RAS
Definition: ip6_neighbor.c:131
ip6_neighbor_adj_fib_add
static void ip6_neighbor_adj_fib_add(ip6_neighbor_t *n, u32 fib_index)
Definition: ip6_neighbor.c:704
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:126
ip_interface_address_t
Definition: lookup.h:88
ip6_nd_mk_incomplete
static void ip6_nd_mk_incomplete(adj_index_t ai)
Definition: ip6_neighbor.c:515
hi
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:469
fib_table_entry_path_add
fib_node_index_t fib_table_entry_path_add(u32 fib_index, const fib_prefix_t *prefix, fib_source_t source, fib_entry_flag_t flags, dpo_proto_t next_hop_proto, const ip46_address_t *next_hop, u32 next_hop_sw_if_index, u32 next_hop_fib_index, u32 next_hop_weight, fib_mpls_label_t *next_hop_labels, fib_route_path_flags_t path_flags)
Add one path to an entry (aka route) in the FIB.
Definition: fib_table.c:522
mhash_t
Definition: mhash.h:46
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:811
address
typedef address
Definition: ip_types.api:34
VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST
#define VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST
Definition: rewrite.h:302
icmp6_router_solicitation_or_advertisement_next_t
icmp6_router_solicitation_or_advertisement_next_t
Definition: ip6_neighbor.c:1473
ip6_radv_t::n_solicitations_rcvd
u32 n_solicitations_rcvd
Definition: ip6_neighbor.c:152
ip6_discover_neighbor_next_t
ip6_discover_neighbor_next_t
Definition: ip6_neighbor.c:3130
ip6_neighbor_syslog
static void ip6_neighbor_syslog(vlib_main_t *vm, int priority, char *fmt,...)
Definition: ip6_neighbor.c:1426
ip6_radv_t::ref_count
int ref_count
Definition: ip6_neighbor.c:119
pending_resolution_t
Definition: arp.c:60
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:241
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:3096
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:5022
a
a
Definition: bitmap.h:537
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:534
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:3511
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:212
ip6_nbr_probe
static void ip6_nbr_probe(ip_adjacency_t *adj)
Definition: ip6_neighbor.c:435
ip6_neighbor_init
static clib_error_t * ip6_neighbor_init(vlib_main_t *vm)
Definition: ip6_neighbor.c:4661
ip6_radv_t::last_radv_time
f64 last_radv_time
Definition: ip6_neighbor.c:141
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:122
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:91
log_level_strings
static char * log_level_strings[]
Definition: ip6_neighbor.c:1417
ip6_multicast_address_scope_t
ip6_multicast_address_scope_t
Definition: ip6_packet.h:136
ip6_neighbor_set_unset_rpc_args_t
Definition: ip6_neighbor.c:400
IP6_DISCOVER_NEIGHBOR_NEXT_DROP
Definition: ip6_neighbor.c:3132
stop_sending_rs
static void stop_sending_rs(vlib_main_t *vm, ip6_radv_t *ra)
Definition: ip6_neighbor.c:2349
ip6_nd_mk_complete
static void ip6_nd_mk_complete(adj_index_t ai, ip6_neighbor_t *nbr)
Definition: ip6_neighbor.c:505
ip6_neighbor_main_t::neighbor_index_by_key
mhash_t neighbor_index_by_key
Definition: ip6_neighbor.c:197
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:2470
PREDICT_TRUE
#define PREDICT_TRUE(x)
Definition: clib.h:106
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:2538
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:47
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:4950
ip6_radv_t::send_unicast
int send_unicast
Definition: ip6_neighbor.c:112
ip6_radv_prefix_t::prefix
ip6_address_t prefix
Definition: ip6_neighbor.c:44
vlib_error_count
static void vlib_error_count(vlib_main_t *vm, uword node_index, uword counter, uword increment)
Definition: error_funcs.h:57
ip6_radv_t::randomizer
u64 randomizer
Definition: ip6_neighbor.c:118
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:316
ip6_address_is_local_unicast
static uword ip6_address_is_local_unicast(ip6_address_t *a)
Definition: ip6_packet.h:309
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:1456
ip6_radv_t::last_multicast_time
f64 last_multicast_time
Definition: ip6_neighbor.c:142
send_ip6_na
void send_ip6_na(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:5013
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:388
NULL
#define NULL
Definition: clib.h:55
mhash_unset
uword mhash_unset(mhash_t *h, void *key, uword *old_value)
Definition: mhash.c:353
vlib_node_t::index
u32 index
Definition: node.h:273
vlib_time_now
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:225
IP6_DISCOVER_NEIGHBOR_NEXT_REPLY_TX
Definition: ip6_neighbor.c:3133
ip6_radv_t::adv_prefixes_pool
ip6_radv_prefix_t * adv_prefixes_pool
Definition: ip6_neighbor.c:97
ip_adjacency_t_
IP unicast adjacency.
Definition: adj.h:175
ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW
Definition: ip6_neighbor.c:1476
clib_random_buffer_get_data
static void * clib_random_buffer_get_data(clib_random_buffer_t *b, uword n_bytes)
Definition: random_buffer.h:78
ip6_mldp_group_t
Definition: ip6_neighbor.c:68
ethernet_buffer_header_size
#define ethernet_buffer_header_size(b)
Determine the size of the Ethernet headers of the current frame in the buffer.
Definition: ethernet.h:424
ethernet_header_t::src_address
u8 src_address[6]
Definition: packet.h:56
ip6_address_is_global_unicast
static uword ip6_address_is_global_unicast(ip6_address_t *a)
Definition: ip6_packet.h:316
wc_nd_signal_report
static void wc_nd_signal_report(wc_nd_report_t *r)
Definition: ip6_neighbor.c:281
ip6_neighbors_entries
ip6_neighbor_t * ip6_neighbors_entries(u32 sw_if_index)
Definition: ip6_neighbor.c:996
ip6_neighbor_main_t::pending_resolutions
pending_resolution_t * pending_resolutions
Definition: ip6_neighbor.c:187
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:1128
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:3145
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:73
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:1231
ip_adjacency_t_::nbr
struct ip_adjacency_t_::@43::@44 nbr
IP_LOOKUP_NEXT_ARP/IP_LOOKUP_NEXT_REWRITE.
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:528
logmask
static int logmask
Definition: ip6_neighbor.c:1423
ip6_get_ll_address
int ip6_get_ll_address(u32 sw_if_index, ip6_address_t *addr)
Definition: ip6_neighbor.c:4229
ip6_header_t::hop_limit
u8 hop_limit
Definition: ip6_packet.h:344
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:4902
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:163
STRUCT_OFFSET_OF
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:62
ip6_radv_prefix_t::adv_pref_lifetime_in_secs
u32 adv_pref_lifetime_in_secs
Definition: ip6_neighbor.c:49
DEF_ADV_PREF_LIFETIME
#define DEF_ADV_PREF_LIFETIME
Definition: ip6_neighbor.c:62
vnet_get_sw_interface
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
Definition: interface_funcs.h:58
vnet_sw_interface_t
Definition: interface.h:653
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:2575
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:273
unformat_vnet_sw_interface
unformat_function_t unformat_vnet_sw_interface
Definition: interface_funcs.h:367
ip6_fib.h
random_u64
static u64 random_u64(u64 *seed)
64-bit random number generator Again, constants courtesy of Donald Knuth.
Definition: random.h:126
ip6_radv_t::cease_radv
int cease_radv
Definition: ip6_neighbor.c:111
vnet_add_del_ip6_nd_change_event
int vnet_add_del_ip6_nd_change_event(vnet_main_t *vnm, void *data_callback, u32 pid, void *address_arg, uword node_index, uword type_opaque, uword data, int is_add)
Definition: ip6_neighbor.c:4754
VNET_HW_INTERFACE_FLAG_LINK_UP
#define VNET_HW_INTERFACE_FLAG_LINK_UP
Definition: interface.h:458
ip6_radv_t::adv_neighbor_reachable_time_in_msec
u32 adv_neighbor_reachable_time_in_msec
Definition: ip6_neighbor.c:86
ip6_radv_t
Definition: ip6_neighbor.c:78
ip6_neighbor_main_t::ip6_ra_publisher_et
uword ip6_ra_publisher_et
Definition: ip6_neighbor.c:213
vlib_node_runtime_t::errors
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:451
FIB_ENTRY_FLAG_ATTACHED
Definition: fib_entry.h:272
pool_get
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:227
ip6_neighbor_set_unset_rpc_args_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.c:406
ip6_header_t::src_address
ip6_address_t src_address
Definition: ip6_packet.h:347
ip6_radv_t::send_radv
int send_radv
Definition: ip6_neighbor.c:110
hash_v3_mix32
#define hash_v3_mix32(a, b, c)
Definition: hash.h:554
format_vnet_sw_if_index_name
format_function_t format_vnet_sw_if_index_name
Definition: interface_funcs.h:363
ra_report_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.h:129
u8
unsigned char u8
Definition: types.h:56
vlib_frame_t
Definition: node.h:368
vlib_buffer_copy
static vlib_buffer_t * vlib_buffer_copy(vlib_main_t *vm, vlib_buffer_t *b)
Definition: buffer_funcs.h:715
icmp6_send_router_solicitation_params_t::irt
u32 irt
Definition: ip6_neighbor.h:107
pending_resolution_t::data_callback
void * data_callback
Definition: arp.c:67
ra_report_prefix_info_t::preferred_time
u32 preferred_time
Definition: ip6_neighbor.h:124
disable_ip6_interface
clib_error_t * disable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:4096
vec_reset_length
#define vec_reset_length(v)
Reset vector length to zero NULL-pointer tolerant.
Definition: vec_bootstrap.h:148
f64
double f64
Definition: types.h:142
ip_adjacency_t_::sub_type
union ip_adjacency_t_::@43 sub_type
ip_adjacency_t_::ia_link
vnet_link_t ia_link
link/ether-type 1 bytes
Definition: adj.h:196
wc_nd_report_t
Definition: ip6_neighbor.h:96
ip6_rewrite_mcast_node
vlib_node_registration_t ip6_rewrite_mcast_node
(constructor) VLIB_REGISTER_NODE (ip6_rewrite_mcast_node)
Definition: ip6_forward.c:2009
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:2880
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:2280
vlib_node_runtime_t
Definition: node.h:445
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:456
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:3880
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:370
ICMP6_ROUTER_SOLICITATION_NEXT_DROP
Definition: ip6_neighbor.c:1475
vnet_hw_interface_t::hw_address
u8 * hw_address
Definition: interface.h:503
ip6_neighbors_pool
ip6_neighbor_t * ip6_neighbors_pool(void)
Definition: ip6_neighbor.c:989
static_always_inline
#define static_always_inline
Definition: clib.h:93
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:773
pool_foreach
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:440
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:267
VLIB_INIT_FUNCTION
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:156
ip6_glean
static uword ip6_glean(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ip6_neighbor.c:3362
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:94
ra_report_t
Definition: ip6_neighbor.h:127
ip6_neighbor_main_t::wc_ip6_nd_publisher_node
uword wc_ip6_nd_publisher_node
Definition: ip6_neighbor.c:208
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:402
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:4289
format_ip6_neighbor_ip6_entry
static u8 * format_ip6_neighbor_ip6_entry(u8 *s, va_list *va)
Definition: ip6_neighbor.c:336
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:3009
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:1016
vnet_set_ip6_ethernet_neighbor
int vnet_set_ip6_ethernet_neighbor(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *a, u8 *link_layer_address, uword n_bytes_link_layer_address, int is_static, int is_no_fib_entry)
Definition: ip6_neighbor.c:764
DEF_ADV_VALID_LIFETIME
#define DEF_ADV_VALID_LIFETIME
Definition: ip6_neighbor.c:61
ip6_radv_t::start_time
f64 start_time
Definition: ip6_neighbor.c:164
ip6_radv_t::address_to_mldp_index
mhash_t address_to_mldp_index
Definition: ip6_neighbor.c:106
vec_elt_at_index
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
Definition: vec_bootstrap.h:174
vnet_get_sup_sw_interface
static vnet_sw_interface_t * vnet_get_sup_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
Definition: interface_funcs.h:81
fib_prefix_t_
Aggregrate type for a prefix.
Definition: fib_types.h:188
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:636
ip6_neighbor_public_main_t
Definition: ip6_neighbor.h:149
ICMP6_ROUTER_SOLICITATION_N_NEXT
Definition: ip6_neighbor.c:1478
adj_unlock
void adj_unlock(adj_index_t adj_index)
Release a reference counting lock on the adjacency.
Definition: adj.c:240
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:4452
vlib_buffer_free_list_t
Definition: buffer.h:340
u32
unsigned int u32
Definition: types.h:88
ip6_radv_t::max_radv_interval
f64 max_radv_interval
Definition: ip6_neighbor.c:135
ip6_icmp_neighbor_discovery_event_data_t::fib_index
u32 fib_index
Definition: ip6_neighbor.c:228
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:1071
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:193
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:4825
fib_prefix_t_::fp_len
u16 fp_len
The mask length.
Definition: fib_types.h:192
ethernet_ip6_mcast_dst_addr
const u8 * ethernet_ip6_mcast_dst_addr(void)
Definition: interface.c:65
VLIB_FRAME_SIZE
#define VLIB_FRAME_SIZE
Definition: node.h:364
ra_signal_report
static void ra_signal_report(ra_report_t *r)
Definition: ip6_neighbor.c:313
random_f64_from_to
static f64 random_f64_from_to(f64 from, f64 to)
Definition: ip6_neighbor.c:2256
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:3134
ra_report_t::time_in_msec_between_retransmitted_neighbor_solicitations
u32 time_in_msec_between_retransmitted_neighbor_solicitations
Definition: ip6_neighbor.h:135
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:141
ip6_neighbor_main_t::opcode_by_name
uword * opcode_by_name
Definition: ip6_neighbor.c:183
MAX_DELAY_BETWEEN_RAS
#define MAX_DELAY_BETWEEN_RAS
Definition: ip6_neighbor.c:132
fl
#define fl(x, y)
FIB_ENTRY_FLAG_NONE
Definition: fib_entry.h:270
ip6_table_bind_callback_t
Definition: ip6.h:113
unformat_line_input
unformat_function_t unformat_line_input
Definition: format.h:281
first
static heap_elt_t * first(heap_header_t *h)
Definition: heap.c:59
ip6_radv_t::max_delay_between_radv
f64 max_delay_between_radv
Definition: ip6_neighbor.c:138
ip6_radv_t::adv_time_in_msec_between_retransmitted_neighbor_solicitations
u32 adv_time_in_msec_between_retransmitted_neighbor_solicitations
Definition: ip6_neighbor.c:87
pool_flush
#define pool_flush(VAR, POOL, BODY)
Remove all elemenets from a pool in a safe way.
Definition: pool.h:500
vnet_main_t::api_errno
vnet_api_error_t api_errno
Definition: vnet.h:78
FIB_ENTRY_FLAG_LOCAL
Definition: fib_entry.h:275
ip6_radv_prefix_t::pref_lifetime_expires
f64 pref_lifetime_expires
Definition: ip6_neighbor.c:53
FIB_SOURCE_IP6_ND
IPv6 ND (seen in the link-local tables)
Definition: fib_entry.h:98
format_vnet_sw_interface_name
format_function_t format_vnet_sw_interface_name
Definition: interface_funcs.h:361
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:1477
ip6_header_t::protocol
u8 protocol
Definition: ip6_packet.h:341
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:461
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:136
vnet_register_ip6_neighbor_resolution_event
void vnet_register_ip6_neighbor_resolution_event(vnet_main_t *vnm, void *address_arg, uword node_index, uword type_opaque, uword data)
Definition: ip6_neighbor.c:4724
vlib_buffer_t::current_length
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:108
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:952
FIB_SOURCE_ADJ
Adjacency source.
Definition: fib_entry.h:104
IP6_DISCOVER_NEIGHBOR_ERROR_REQUEST_SENT
Definition: ip6_neighbor.c:3140
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:211
ra_report_t::neighbor_reachable_time_in_msec
u32 neighbor_reachable_time_in_msec
Definition: ip6_neighbor.h:134
pending_resolution_t::type_opaque
uword type_opaque
Definition: arp.c:64
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:2559
ethernet_interface::address
u8 address[6]
Definition: ethernet.h:162
vnet_unset_ip6_ethernet_neighbor
int vnet_unset_ip6_ethernet_neighbor(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *a, u8 *link_layer_address, uword n_bytes_link_layer_address)
Definition: ip6_neighbor.c:918
set_unset_ip6_neighbor_rpc
static void set_unset_ip6_neighbor_rpc(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *a, u8 *link_layer_address, int is_add, int is_static, int is_no_fib_entry)
Definition: ip6_neighbor.c:414
wc_nd_report_t::mac
u8 mac[6]
Definition: ip6_neighbor.h:100
ip6_radv_t::all_routers_mcast
int all_routers_mcast
Definition: ip6_neighbor.c:116
unformat_input_t
struct _unformat_input_t unformat_input_t
u16
unsigned short u16
Definition: types.h:57
ip6_discover_neighbor_error_strings
static char * ip6_discover_neighbor_error_strings[]
Definition: ip6_neighbor.c:3367
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:4250
DEF_MAX_RADV_INTERVAL
#define DEF_MAX_RADV_INTERVAL
Definition: ip6_neighbor.c:123
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:93
ip6_radv_t::next_multicast_time
f64 next_multicast_time
Definition: ip6_neighbor.c:143
vlib_buffer_get_current
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
Definition: buffer.h:202
VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX
#define VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX
Definition: buffer.h:439
ip6_neighbor_main_t::limit_neighbor_cache_size
u32 limit_neighbor_cache_size
Definition: ip6_neighbor.c:204
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:273
foreach_log_level
#define foreach_log_level
Definition: ip6_neighbor.c:1400
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:846
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
PREDICT_FALSE
#define PREDICT_FALSE(x)
Definition: clib.h:105
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_main
vnet_main_t vnet_main
Definition: misc.c:43
ip6_discover_neighbor_error_t
ip6_discover_neighbor_error_t
Definition: ip6_neighbor.c:3137
ip6_radv_t::adv_other_flag
int adv_other_flag
Definition: ip6_neighbor.c:84
vlib_node_runtime_t::node_index
u32 node_index
Node index.
Definition: node.h:473
ip6_radv_t::address_to_prefix_index
mhash_t address_to_prefix_index
Definition: ip6_neighbor.c:100
ra_report_t::router_lifetime_in_sec
u16 router_lifetime_in_sec
Definition: ip6_neighbor.h:133
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:138
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:3355
ra_report_prefix_info_t::valid_time
u32 valid_time
Definition: ip6_neighbor.h:123
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:328
ip6_neighbor.h
vlib_buffer_t::error
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:135
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:2668
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:2505
ip6_radv_t::failed_device_check
int failed_device_check
Definition: ip6_neighbor.c:115
FIB_ROUTE_PATH_FLAG_NONE
Definition: fib_types.h:305
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:97
ip6_address_t::as_u32
u32 as_u32[4]
Definition: ip6_packet.h:50
wc_nd_report_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.h:98
pool_free
#define pool_free(p)
Free a pool.
Definition: pool.h:354
ip6_radv_t::mldp_group_pool
ip6_mldp_group_t * mldp_group_pool
Definition: ip6_neighbor.c:103
icmp6_neighbor_solicitation_or_advertisement
static_always_inline uword icmp6_neighbor_solicitation_or_advertisement(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, uword is_solicitation)
Definition: ip6_neighbor.c:1144
wc_nd_set_publisher_node
void wc_nd_set_publisher_node(uword node_index, uword event_type)
Definition: ip6_neighbor.c:297
enable_ip6_interface
clib_error_t * enable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:4149
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:1136
ip6_radv_t::adv_managed_flag
int adv_managed_flag
Definition: ip6_neighbor.c:83
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:3086
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:285
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:153
IP_LOOKUP_NEXT_DROP
Adjacency to drop this packet.
Definition: adj.h:53
VLIB_REGISTER_NODE
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:153
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:134
UNFORMAT_END_OF_INPUT
#define UNFORMAT_END_OF_INPUT
Definition: format.h:143
mhash_init
void mhash_init(mhash_t *h, uword n_value_bytes, uword n_key_bytes)
Definition: mhash.c:168
get_mac_address
static u8 get_mac_address(u32 sw_if_index, u8 *address)
Definition: ip6_neighbor.c:2269
ra_report_t::router_address
u8 router_address[16]
Definition: ip6_neighbor.h:130
vlib_frame_t::n_vectors
u16 n_vectors
Definition: node.h:380
vlib_get_thread_index
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:221
format_ip6_address
format_function_t format_ip6_address
Definition: format.h:99
ip6a_zero
static ip6_address_t ip6a_zero
Definition: ip6_neighbor.c:234
vm
vlib_main_t * vm
Definition: buffer.c:294
ra_publish
static int ra_publish(ra_report_t *r)
Definition: ip6_neighbor.c:305
vnet_hw_interface_t
Definition: interface.h:451
ip6_mldp_group_t::mcast_address
ip6_address_t mcast_address
Definition: ip6_neighbor.c:72
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:370
log_level_t
log_level_t
Definition: ip6_neighbor.c:1410
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:108
IP_LOOKUP_NEXT_MCAST_MIDCHAIN
Multicast Midchain Adjacency.
Definition: adj.h:86
ip6_radv_t::curr_hop_limit
u8 curr_hop_limit
Definition: ip6_neighbor.c:82
ICMP6_NEIGHBOR_SOLICITATION_N_NEXT
Definition: ip6_neighbor.c:1140
ip6_radv_t::sleep_interval
f64 sleep_interval
Definition: ip6_neighbor.c:161
ICMP6_ND_EVENT_INIT
Definition: ip6_neighbor.c:219
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:74
vlib_node_get_runtime
static vlib_node_runtime_t * vlib_node_get_runtime(vlib_main_t *vm, u32 node_index)
Get node runtime by node index.
Definition: node_funcs.h:89
vlib_buffer_t
Definition: buffer.h:98
clib_memcpy
#define clib_memcpy(a, b, c)
Definition: string.h:75
ip_lookup_main_t
Definition: lookup.h:119
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:4634
ip6_icmp_neighbor_discovery_event_data_t::up_down_swindex
u32 up_down_swindex
Definition: ip6_neighbor.c:227
DEF_CURR_HOP_LIMIT
#define DEF_CURR_HOP_LIMIT
Definition: ip6_neighbor.c:125
vlib_main_t::elog_main
elog_main_t elog_main
Definition: main.h:158
ip6_radv_t::adv_link_layer_address
int adv_link_layer_address
Definition: ip6_neighbor.c:113
fib_node_index_t
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:30
icmp6_send_router_solicitation_params_t
Definition: ip6_neighbor.h:105
pending_resolution_t::pid
u32 pid
Definition: arp.c:68
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:1063
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:59
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:454
l2_bridge_domain_t::mac_by_ip6
uword * mac_by_ip6
Definition: l2_bd.h:86
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:137
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:2363
ra_report_t::current_hop_limit
u8 current_hop_limit
Definition: ip6_neighbor.h:131
ip6_next_header
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:374
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:3139
ip6_neighbor_set_unset_rpc_args_t::is_no_fib_entry
u8 is_no_fib_entry
Definition: ip6_neighbor.c:404
fib_table.h
VLIB_CLI_COMMAND
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:154
ip6_radv_t::initial_adverts_count
u32 initial_adverts_count
Definition: ip6_neighbor.c:146
IP_LOOKUP_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:129
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:52
MAX_INITIAL_RTR_ADVERTISEMENTS
#define MAX_INITIAL_RTR_ADVERTISEMENTS
Definition: ip6_neighbor.c:130
vlib_node_runtime_t::cached_next_index
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
Definition: node.h:492
ip6_radv_t::link_local_address
ip6_address_t link_local_address
Definition: ip6_neighbor.c:156
VNET_SW_INTERFACE_FLAG_ADMIN_UP
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
Definition: interface.h:660
unformat_ethernet_address
uword unformat_ethernet_address(unformat_input_t *input, va_list *args)
Definition: format.c:227
ASSERT
#define ASSERT(truth)
Definition: error_bootstrap.h:69
vnet_sw_interface_t::flags
u16 flags
Definition: interface.h:657
ip6_radv_prefix_t::enabled
int enabled
Definition: ip6_neighbor.c:56
send_rs_process_node
vlib_node_registration_t send_rs_process_node
(constructor) VLIB_REGISTER_NODE (send_rs_process_node)
Definition: ip6_neighbor.c:2462
ip6_neighbor_main_t::neighbor_delete_rotor
u32 neighbor_delete_rotor
Definition: ip6_neighbor.c:205
l2_bridge_domain_t
Definition: l2_bd.h:54
ip6_radv_t::prefix_option
int prefix_option
Definition: ip6_neighbor.c:114
mhash_get
static uword * mhash_get(mhash_t *h, const void *key)
Definition: mhash.h:110
ip6_neighbor_key_t::ip6_address
ip6_address_t ip6_address
Definition: ip6_neighbor.h:26
ip6_neighbor_main_t
Definition: ip6_neighbor.c:180
ip6_main
ip6_main_t ip6_main
Definition: ip6_forward.c:2574
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
ctx
long ctx[MAX_CONNS]
Definition: main.c:126
ip6_radv_t::n_advertisements_sent
u32 n_advertisements_sent
Definition: ip6_neighbor.c:151
ip6_radv_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.c:109
mhash_free
static void mhash_free(mhash_t *h)
Definition: mhash.h:149
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:401
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:3897
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:518
hash_v3_finalize32
#define hash_v3_finalize32(a, b, c)
Definition: hash.h:564
ip6_neighbor_set_unset_rpc_args_t::is_static
u8 is_static
Definition: ip6_neighbor.c:403
ip6_radv_prefix_t
Definition: ip6_neighbor.c:41
ip6_header_t
Definition: ip6_packet.h:331
ip6_radv_t::min_delay_between_radv
f64 min_delay_between_radv
Definition: ip6_neighbor.c:137
ip6_radv_prefix_t::adv_on_link_flag
int adv_on_link_flag
Definition: ip6_neighbor.c:46
ip6_neighbor_main_t::wc_ip6_nd_publisher_et
uword wc_ip6_nd_publisher_et
Definition: ip6_neighbor.c:209
DEF_MIN_RADV_INTERVAL
#define DEF_MIN_RADV_INTERVAL
Definition: ip6_neighbor.c:124
ip6_neighbor_set_unset_rpc_args_t::link_layer_address
u8 link_layer_address[6]
Definition: ip6_neighbor.c:405
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:1482
ip6_neighbor_sort
static int ip6_neighbor_sort(void *a1, void *a2)
Definition: ip6_neighbor.c:976
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:2422
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:199
ip6_radv_t::adv_router_lifetime_in_sec
u16 adv_router_lifetime_in_sec
Definition: ip6_neighbor.c:85
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:215
vnet_sw_interface_t::hw_if_index
u32 hw_if_index
Definition: interface.h:691
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:42
ip6_radv_prefix_t::deprecated_prefix_flag
int deprecated_prefix_flag
Definition: ip6_neighbor.c:57
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:132
ip6_multicast_link_local_group_id_t
ip6_multicast_link_local_group_id_t
Definition: ip6_packet.h:143
ip6_address_is_link_local_unicast
static uword ip6_address_is_link_local_unicast(const ip6_address_t *a)
Definition: ip6_packet.h:302
ethernet_interface
Definition: ethernet.h:143
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:159
ip6_neighbor_main_t::pending_resolutions_by_address
mhash_t pending_resolutions_by_address
Definition: ip6_neighbor.c:186
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:3077
ip6_nd_mk_incomplete_walk
static adj_walk_rc_t ip6_nd_mk_incomplete_walk(adj_index_t ai, void *ctx)
Definition: ip6_neighbor.c:565
pending_resolution_t::next_index
u32 next_index
Definition: arp.c:62
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:232
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:431
ip6_radv_t::buffer
vlib_buffer_t * buffer
Definition: ip6_neighbor.c:165
ra_report_prefix_info_t::dst_address_length
u8 dst_address_length
Definition: ip6_neighbor.h:121
vlib_add_trace
static void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
Definition: trace_funcs.h:55
ip6_radv_t::params
icmp6_send_router_solicitation_params_t params
Definition: ip6_neighbor.c:160
clib_error_t
Definition: clib_error.h:21
unformat_parse_error
#define unformat_parse_error(input)
Definition: format.h:267
ip6_neighbor_get_link_local_address
ip6_address_t ip6_neighbor_get_link_local_address(u32 sw_if_index)
Definition: ip6_neighbor.c:240
force_reuse_neighbor_entry
static ip6_neighbor_t * force_reuse_neighbor_entry(void)
Definition: ip6_neighbor.c:733
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:334
ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP
Definition: ip6_neighbor.c:1138
ethernet_ndp_change_mac
void ethernet_ndp_change_mac(u32 sw_if_index)
Definition: ip6_neighbor.c:4988
ra_report_prefix_info_t::flags
u8 flags
Definition: ip6_neighbor.h:122
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:2860
VLIB_TX
Definition: defs.h:47
vlib_trace_frame_buffers_only
void vlib_trace_frame_buffers_only(vlib_main_t *vm, vlib_node_runtime_t *node, u32 *buffers, uword n_buffers, uword next_buffer_stride, uword n_buffer_data_bytes_in_trace)
Definition: trace.c:45
set_ip6_link_local_address_cmd
clib_error_t * set_ip6_link_local_address_cmd(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:4507
ip6_neighbor_send_mldpv2_report
static void ip6_neighbor_send_mldpv2_report(u32 sw_if_index)
Definition: ip6_neighbor.c:2708
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:3069
IP6_NEIGHBOR_FLAG_STATIC
Definition: ip6_neighbor.h:33
ip6_header_t::payload_length
u16 payload_length
Definition: ip6_packet.h:338
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:963
ethernet_get_interface
ethernet_interface_t * ethernet_get_interface(ethernet_main_t *em, u32 hw_if_index)
Definition: interface.c:703
ip6_set_solicited_node_multicast_address
static void ip6_set_solicited_node_multicast_address(ip6_address_t *a, u32 id)
Definition: ip6_packet.h:174
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:317
icmp6_send_router_solicitation_params_t::mrc
u32 mrc
Definition: ip6_neighbor.h:109
elog_string
u32 elog_string(elog_main_t *em, char *fmt,...)
add a string to the event-log string table
Definition: elog.c:534
icmp6_register_type
void icmp6_register_type(vlib_main_t *vm, icmp6_type_t type, u32 node_index)
Definition: icmp6.c:742
vec_len
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
Definition: vec_bootstrap.h:142
ip_adjacency_t_::lookup_next_index
ip_lookup_next_t lookup_next_index
Next hop after ip4-lookup.
Definition: adj.h:190
icmp6_input_trace_t
Definition: icmp6.h:59
VLIB_BUFFER_TRACE_TRAJECTORY_INIT
#define VLIB_BUFFER_TRACE_TRAJECTORY_INIT(b)
Definition: buffer.h:546
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:233
format_vlib_time
format_function_t format_vlib_time
Definition: node_funcs.h:1163
vec_sort_with_function
#define vec_sort_with_function(vec, f)
Sort a vector using the supplied element comparison function.
Definition: vec.h:961
unformat_free
static void unformat_free(unformat_input_t *i)
Definition: format.h:161
ra_report_t::slla
u8 slla[6]
Definition: ip6_neighbor.h:136
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:3409
vlib_node_t
Definition: node.h:251
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:4554
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:110
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:79
l2input_main_t::bd_configs
l2_bridge_domain_t * bd_configs
Definition: l2_input.h:69
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:3375
ip6_radv_prefix_t::decrement_lifetime_flag
int decrement_lifetime_flag
Definition: ip6_neighbor.c:58
hash_get_mem
#define hash_get_mem(h, key)
Definition: hash.h:269
ip6_neighbor_set_unset_rpc_args_t::addr
ip6_address_t addr
Definition: ip6_neighbor.c:407
offset
struct clib_bihash_value offset
template key/value backing page structure
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:3114
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:1063
vnet_buffer
#define vnet_buffer(b)
Definition: buffer.h:360
ip6_neighbor_sw_interface_up_down
static clib_error_t * ip6_neighbor_sw_interface_up_down(vnet_main_t *vnm, u32 sw_if_index, u32 flags)
Definition: ip6_neighbor.c:573
ip6_radv_t::initial_adverts_interval
f64 initial_adverts_interval
Definition: ip6_neighbor.c:147
random_u32
static u32 random_u32(u32 *seed)
32-bit random number generator
Definition: random.h:69
format_unformat_error
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
vnet_sw_interface_t::type
vnet_sw_interface_type_t type
Definition: interface.h:655
ip6_radv_t::mcast_adj_index
adj_index_t mcast_adj_index
Definition: ip6_neighbor.c:120
pending_resolution_t::node_index
uword node_index
Definition: arp.c:63
ip6_icmp_neighbor_discovery_event_type_t
ip6_icmp_neighbor_discovery_event_type_t
Definition: ip6_neighbor.c:217
vnet_hw_interface_t::output_node_index
u32 output_node_index
Definition: interface.h:507
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:3390
vec_foreach
#define vec_foreach(var, vec)
Vector iterator.
Definition: vec_bootstrap.h:184
ip6_address_is_unspecified
static uword ip6_address_is_unspecified(ip6_address_t *a)
Definition: ip6_packet.h:283
ip6_ethernet_update_adjacency
void ip6_ethernet_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Definition: ip6_neighbor.c:621
ip6_neighbor_t
Definition: ip6_neighbor.h: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:486
ip6_radv_prefix_t::adv_valid_lifetime_in_secs
u32 adv_valid_lifetime_in_secs
Definition: ip6_neighbor.c:48
ip6_add_del_interface_address
clib_error_t * ip6_add_del_interface_address(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *address, u32 address_length, u32 is_del)
Definition: ip6_forward.c:193
ip6_multicast_ethernet_address
static void ip6_multicast_ethernet_address(u8 *ethernet_address, u32 group_id)
Definition: ip6_packet.h:203
addr
vhost_vring_addr_t addr
Definition: vhost-user.h:83
ip6_mldp_group_t::type
u8 type
Definition: ip6_neighbor.c:71
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:662
ip6_radv_t::initial_adverts_sent
u32 initial_adverts_sent
Definition: ip6_neighbor.c:148
ip_interface_address_get_address
static void * ip_interface_address_get_address(ip_lookup_main_t *lm, ip_interface_address_t *a)
Definition: lookup.h:172
ip6_nd_find
static ip6_neighbor_t * ip6_nd_find(u32 sw_if_index, const ip6_address_t *addr)
Definition: ip6_neighbor.c:536
ip6_neighbor_main_t::mac_changes_by_address
mhash_t mac_changes_by_address
Definition: ip6_neighbor.c:190
ip6_link_local_address_from_ethernet_address
static void ip6_link_local_address_from_ethernet_address(ip6_address_t *a, u8 *ethernet_address)
Definition: ip6_packet.h:186
ip6_nd_mk_complete_walk
static adj_walk_rc_t ip6_nd_mk_complete_walk(adj_index_t ai, void *ctx)
Definition: ip6_neighbor.c:555
MAX_INITIAL_RTR_ADVERT_INTERVAL
#define MAX_INITIAL_RTR_ADVERT_INTERVAL
Definition: ip6_neighbor.c:129
VLIB_NODE_FLAG_TRACE
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:295
flags
u32 flags
Definition: vhost-user.h:77
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:111
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:490
IP6_DISCOVER_NEIGHBOR_ERROR_NO_SOURCE_ADDRESS
Definition: ip6_neighbor.c:3141
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:3648
ip6_radv_t::max_rtr_default_lifetime
f64 max_rtr_default_lifetime
Definition: ip6_neighbor.c:139
BITS
#define BITS(x)
Definition: clib.h:58
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:3053
ip6_neighbor_main_t::neighbor_pool
ip6_neighbor_t * neighbor_pool
Definition: ip6_neighbor.c:195
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:291
vlib_cli_output
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:681
ra_report_prefix_info_t::dst_address
ip6_address_t dst_address
Definition: ip6_neighbor.h:120
vlib_get_buffer
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:57
ip6_neighbor_t::link_layer_address
u8 link_layer_address[8]
Definition: ip6_neighbor.h:41
pending_resolution_t::data
uword data
Definition: arp.c:65
vlib_main_t::random_buffer
clib_random_buffer_t random_buffer
Definition: main.h:170
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:1889
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:127
ip6_radv_t::adv_link_mtu
u32 adv_link_mtu
Definition: ip6_neighbor.c:90
VLIB_RX
Definition: defs.h:46
ip6_neighbor_main
static ip6_neighbor_main_t ip6_neighbor_main
Definition: ip6_neighbor.c:232
ip6_neighbor_main_t::mac_changes
pending_resolution_t * mac_changes
Definition: ip6_neighbor.c:191
ip6_radv_t::seed
u32 seed
Definition: ip6_neighbor.c:117
ip6_header_t::dst_address
ip6_address_t dst_address
Definition: ip6_packet.h:347
ip6_interface_enabled
int ip6_interface_enabled(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:4134
unformat_check_input
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:169
ip6_set_reserved_multicast_address
static void ip6_set_reserved_multicast_address(ip6_address_t *a, ip6_multicast_address_scope_t scope, u16 id)
Definition: ip6_packet.h:164
ip6_icmp_neighbor_discovery_event_data_t::add_del_swindex
u32 add_del_swindex
Definition: ip6_neighbor.c:224
FIB_SOURCE_IP6_ND_PROXY
IPv6 Proxy ND.
Definition: fib_entry.h:94
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:222
ip6_set_neighbor_limit
clib_error_t * ip6_set_neighbor_limit(u32 neighbor_limit)
Definition: ip6_neighbor.c:4625
ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY
Definition: ip6_neighbor.c:1139
format_icmp6_input_trace
format_function_t format_icmp6_input_trace
Definition: icmp6.h:64
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:45
adj_nbr_walk_nh6
void adj_nbr_walk_nh6(u32 sw_if_index, const ip6_address_t *addr, adj_walk_cb_t cb, void *ctx)
Walk adjacencies on a link with a given v6 next-hop.
Definition: adj_nbr.c:619
pool_elts
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128