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Vector Packet Processing
ip6_neighbor.c
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1 /*
2  * ip/ip6_neighbor.c: IP6 neighbor handling
3  *
4  * Copyright (c) 2010 Cisco and/or its affiliates.
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #include <vnet/ip/ip.h>
19 #include <vnet/ip/ip6_neighbor.h>
20 #include <vnet/ethernet/ethernet.h>
21 #include <vppinfra/mhash.h>
22 #include <vppinfra/md5.h>
23 #include <vnet/adj/adj.h>
24 #include <vnet/adj/adj_mcast.h>
25 #include <vnet/fib/fib_table.h>
26 #include <vnet/fib/ip6_fib.h>
27 #include <vnet/mfib/ip6_mfib.h>
28 
29 /**
30  * @file
31  * @brief IPv6 Neighbor Adjacency and Neighbor Discovery.
32  *
33  * The files contains the API and CLI code for managing IPv6 neighbor
34  * adjacency tables and neighbor discovery logic.
35  */
36 
37 /* can't use sizeof link_layer_address, that's 8 */
38 #define ETHER_MAC_ADDR_LEN 6
39 
40 /* advertised prefix option */
41 typedef struct
42 {
43  /* basic advertised information */
44  ip6_address_t prefix;
45  u8 prefix_len;
46  int adv_on_link_flag;
47  int adv_autonomous_flag;
48  u32 adv_valid_lifetime_in_secs;
49  u32 adv_pref_lifetime_in_secs;
50 
51  /* advertised values are computed from these times if decrementing */
52  f64 valid_lifetime_expires;
53  f64 pref_lifetime_expires;
54 
55  /* local information */
56  int enabled;
57  int deprecated_prefix_flag;
58  int decrement_lifetime_flag;
59 
60 #define MIN_ADV_VALID_LIFETIME 7203 /* seconds */
61 #define DEF_ADV_VALID_LIFETIME 2592000
62 #define DEF_ADV_PREF_LIFETIME 604800
63 
64  /* extensions are added here, mobile, DNS etc.. */
65 } ip6_radv_prefix_t;
66 
67 
68 typedef struct
69 {
70  /* group information */
71  u8 type;
72  ip6_address_t mcast_address;
73  u16 num_sources;
74  ip6_address_t *mcast_source_address_pool;
75 } ip6_mldp_group_t;
76 
77 /* configured router advertisement information per ipv6 interface */
78 typedef struct
79 {
80 
81  /* advertised config information, zero means unspecified */
82  u8 curr_hop_limit;
83  int adv_managed_flag;
84  int adv_other_flag;
85  u16 adv_router_lifetime_in_sec;
86  u32 adv_neighbor_reachable_time_in_msec;
87  u32 adv_time_in_msec_between_retransmitted_neighbor_solicitations;
88 
89  /* mtu option */
90  u32 adv_link_mtu;
91 
92  /* source link layer option */
93  u8 link_layer_address[8];
94  u8 link_layer_addr_len;
95 
96  /* prefix option */
97  ip6_radv_prefix_t *adv_prefixes_pool;
98 
99  /* Hash table mapping address to index in interface advertised prefix pool. */
100  mhash_t address_to_prefix_index;
101 
102  /* MLDP group information */
103  ip6_mldp_group_t *mldp_group_pool;
104 
105  /* Hash table mapping address to index in mldp address pool. */
106  mhash_t address_to_mldp_index;
107 
108  /* local information */
109  u32 sw_if_index;
110  int send_radv; /* radv on/off on this interface - set by config */
111  int cease_radv; /* we are ceasing to send - set byf config */
112  int send_unicast;
113  int adv_link_layer_address;
114  int prefix_option;
115  int failed_device_check;
116  int all_routers_mcast;
117  u32 seed;
118  u64 randomizer;
119  int ref_count;
120  adj_index_t mcast_adj_index;
121 
122  /* timing information */
123 #define DEF_MAX_RADV_INTERVAL 200
124 #define DEF_MIN_RADV_INTERVAL .75 * DEF_MAX_RADV_INTERVAL
125 #define DEF_CURR_HOP_LIMIT 64
126 #define DEF_DEF_RTR_LIFETIME 3 * DEF_MAX_RADV_INTERVAL
127 #define MAX_DEF_RTR_LIFETIME 9000
128 
129 #define MAX_INITIAL_RTR_ADVERT_INTERVAL 16 /* seconds */
130 #define MAX_INITIAL_RTR_ADVERTISEMENTS 3 /*transmissions */
131 #define MIN_DELAY_BETWEEN_RAS 3 /* seconds */
132 #define MAX_DELAY_BETWEEN_RAS 1800 /* seconds */
133 #define MAX_RA_DELAY_TIME .5 /* seconds */
134 
135  f64 max_radv_interval;
136  f64 min_radv_interval;
137  f64 min_delay_between_radv;
138  f64 max_delay_between_radv;
139  f64 max_rtr_default_lifetime;
140 
141  f64 last_radv_time;
142  f64 last_multicast_time;
143  f64 next_multicast_time;
144 
145 
146  u32 initial_adverts_count;
147  f64 initial_adverts_interval;
148  u32 initial_adverts_sent;
149 
150  /* stats */
151  u32 n_advertisements_sent;
152  u32 n_solicitations_rcvd;
153  u32 n_solicitations_dropped;
154 
155  /* Link local address to use (defaults to underlying physical for logical interfaces */
156  ip6_address_t link_local_address;
157 } ip6_radv_t;
158 
159 typedef struct
160 {
161  u32 next_index;
162  uword node_index;
163  uword type_opaque;
164  uword data;
165  /* Used for nd event notification only */
166  void *data_callback;
167  u32 pid;
168 } pending_resolution_t;
169 
170 
171 typedef struct
172 {
173  /* Hash tables mapping name to opcode. */
174  uword *opcode_by_name;
175 
176  /* lite beer "glean" adjacency handling */
177  mhash_t pending_resolutions_by_address;
178  pending_resolution_t *pending_resolutions;
179 
180  /* Mac address change notification */
181  mhash_t mac_changes_by_address;
182  pending_resolution_t *mac_changes;
183 
184  u32 *neighbor_input_next_index_by_hw_if_index;
185 
186  ip6_neighbor_t *neighbor_pool;
187 
188  mhash_t neighbor_index_by_key;
189 
190  u32 *if_radv_pool_index_by_sw_if_index;
191 
192  ip6_radv_t *if_radv_pool;
193 
194  /* Neighbor attack mitigation */
195  u32 limit_neighbor_cache_size;
196  u32 neighbor_delete_rotor;
197 
198  /* Wildcard nd report publisher */
199  uword wc_ip6_nd_publisher_node;
200  uword wc_ip6_nd_publisher_et;
201 } ip6_neighbor_main_t;
202 
203 /* ipv6 neighbor discovery - timer/event types */
204 typedef enum
205 {
206  ICMP6_ND_EVENT_INIT,
207 } ip6_icmp_neighbor_discovery_event_type_t;
208 
209 typedef union
210 {
211  u32 add_del_swindex;
212  struct
213  {
214  u32 up_down_swindex;
215  u32 fib_index;
216  } up_down_event;
217 } ip6_icmp_neighbor_discovery_event_data_t;
218 
219 static ip6_neighbor_main_t ip6_neighbor_main;
220 static ip6_address_t ip6a_zero; /* ip6 address 0 */
221 
222 static void wc_nd_signal_report (wc_nd_report_t * r);
223 
224 /**
225  * @brief publish wildcard arp event
226  * @param sw_if_index The interface on which the ARP entires are acted
227  */
228 static int
229 vnet_nd_wc_publish (u32 sw_if_index, u8 * mac, ip6_address_t * ip6)
230 {
231  wc_nd_report_t r = {
232  .sw_if_index = sw_if_index,
233  .ip6 = *ip6,
234  };
235  memcpy (r.mac, mac, sizeof r.mac);
236 
237  void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
238  vl_api_rpc_call_main_thread (wc_nd_signal_report, (u8 *) & r, sizeof r);
239  return 0;
240 }
241 
242 static void
243 wc_nd_signal_report (wc_nd_report_t * r)
244 {
245  vlib_main_t *vm = vlib_get_main ();
246  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
247  uword ni = nm->wc_ip6_nd_publisher_node;
248  uword et = nm->wc_ip6_nd_publisher_et;
249 
250  if (ni == (uword) ~ 0)
251  return;
252  wc_nd_report_t *q =
253  vlib_process_signal_event_data (vm, ni, et, 1, sizeof *q);
254 
255  *q = *r;
256 }
257 
258 void
259 wc_nd_set_publisher_node (uword node_index, uword event_type)
260 {
261  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
262  nm->wc_ip6_nd_publisher_node = node_index;
263  nm->wc_ip6_nd_publisher_et = event_type;
264 }
265 
266 static u8 *
267 format_ip6_neighbor_ip6_entry (u8 * s, va_list * va)
268 {
269  vlib_main_t *vm = va_arg (*va, vlib_main_t *);
270  ip6_neighbor_t *n = va_arg (*va, ip6_neighbor_t *);
271  vnet_main_t *vnm = vnet_get_main ();
272  vnet_sw_interface_t *si;
273  u8 *flags = 0;
274 
275  if (!n)
276  return format (s, "%=12s%=20s%=6s%=20s%=40s", "Time", "Address", "Flags",
277  "Link layer", "Interface");
278 
279  if (n->flags & IP6_NEIGHBOR_FLAG_DYNAMIC)
280  flags = format (flags, "D");
281 
282  if (n->flags & IP6_NEIGHBOR_FLAG_STATIC)
283  flags = format (flags, "S");
284 
285  if (n->flags & IP6_NEIGHBOR_FLAG_NO_FIB_ENTRY)
286  flags = format (flags, "N");
287 
288  si = vnet_get_sw_interface (vnm, n->key.sw_if_index);
289  s = format (s, "%=12U%=20U%=6s%=20U%=40U",
290  format_vlib_cpu_time, vm, n->cpu_time_last_updated,
291  format_ip6_address, &n->key.ip6_address,
292  flags ? (char *) flags : "",
293  format_ethernet_address, n->link_layer_address,
294  format_vnet_sw_interface_name, vnm, si);
295 
296  vec_free (flags);
297  return s;
298 }
299 
300 static void
301 ip6_neighbor_adj_fib_remove (ip6_neighbor_t * n, u32 fib_index)
302 {
303  if (FIB_NODE_INDEX_INVALID != n->fib_entry_index)
304  {
305  fib_prefix_t pfx = {
306  .fp_len = 128,
307  .fp_proto = FIB_PROTOCOL_IP6,
308  .fp_addr.ip6 = n->key.ip6_address,
309  };
310  fib_table_entry_path_remove (fib_index,
311  &pfx,
312  FIB_SOURCE_ADJ,
313  DPO_PROTO_IP6,
314  &pfx.fp_addr,
315  n->key.sw_if_index, ~0,
316  1, FIB_ROUTE_PATH_FLAG_NONE);
317  }
318 }
319 
320 static clib_error_t *
321 ip6_neighbor_sw_interface_up_down (vnet_main_t * vnm,
322  u32 sw_if_index, u32 flags)
323 {
324  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
325  ip6_neighbor_t *n;
326 
327  if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
328  {
329  u32 i, *to_delete = 0;
330 
331  /* *INDENT-OFF* */
332  pool_foreach (n, nm->neighbor_pool,
333  ({
334  if (n->key.sw_if_index == sw_if_index)
335  vec_add1 (to_delete, n - nm->neighbor_pool);
336  }));
337  /* *INDENT-ON* */
338 
339  for (i = 0; i < vec_len (to_delete); i++)
340  {
341  n = pool_elt_at_index (nm->neighbor_pool, to_delete[i]);
342  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
343  ip6_neighbor_adj_fib_remove (n,
344  ip6_fib_table_get_index_for_sw_if_index
345  (n->key.sw_if_index));
346  pool_put (nm->neighbor_pool, n);
347  }
348  vec_free (to_delete);
349  }
350 
351  return 0;
352 }
353 
354 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (ip6_neighbor_sw_interface_up_down);
355 
356 static void
357 unset_random_neighbor_entry (void)
358 {
359  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
360  vnet_main_t *vnm = vnet_get_main ();
361  vlib_main_t *vm = vnm->vlib_main;
362  ip6_neighbor_t *e;
363  u32 index;
364 
365  index = pool_next_index (nm->neighbor_pool, nm->neighbor_delete_rotor);
366  nm->neighbor_delete_rotor = index;
367 
368  /* Try again from elt 0, could happen if an intfc goes down */
369  if (index == ~0)
370  {
371  index = pool_next_index (nm->neighbor_pool, nm->neighbor_delete_rotor);
372  nm->neighbor_delete_rotor = index;
373  }
374 
375  /* Nothing left in the pool */
376  if (index == ~0)
377  return;
378 
379  e = pool_elt_at_index (nm->neighbor_pool, index);
380 
381  vnet_unset_ip6_ethernet_neighbor (vm, e->key.sw_if_index,
382  &e->key.ip6_address,
383  e->link_layer_address,
384  ETHER_MAC_ADDR_LEN);
385 }
386 
387 typedef struct
388 {
389  u8 is_add;
390  u8 is_static;
391  u8 is_no_fib_entry;
392  u8 link_layer_address[6];
393  u32 sw_if_index;
394  ip6_address_t addr;
395 } ip6_neighbor_set_unset_rpc_args_t;
396 
397 static void ip6_neighbor_set_unset_rpc_callback
398  (ip6_neighbor_set_unset_rpc_args_t * a);
399 
400 static void set_unset_ip6_neighbor_rpc
401  (vlib_main_t * vm,
402  u32 sw_if_index,
403  ip6_address_t * a, u8 * link_layer_address, int is_add, int is_static,
404  int is_no_fib_entry)
405 {
406  ip6_neighbor_set_unset_rpc_args_t args;
407  void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
408 
409  args.sw_if_index = sw_if_index;
410  args.is_add = is_add;
411  args.is_static = is_static;
412  args.is_no_fib_entry = is_no_fib_entry;
413  clib_memcpy (&args.addr, a, sizeof (*a));
414  if (NULL != link_layer_address)
415  clib_memcpy (args.link_layer_address, link_layer_address, 6);
416 
417  vl_api_rpc_call_main_thread (ip6_neighbor_set_unset_rpc_callback,
418  (u8 *) & args, sizeof (args));
419 }
420 
421 static void
422 ip6_nbr_probe (ip_adjacency_t * adj)
423 {
424  icmp6_neighbor_solicitation_header_t *h;
425  vnet_main_t *vnm = vnet_get_main ();
426  ip6_main_t *im = &ip6_main;
427  ip_interface_address_t *ia;
428  ip6_address_t *dst, *src;
429  vnet_hw_interface_t *hi;
430  vnet_sw_interface_t *si;
431  vlib_buffer_t *b;
432  int bogus_length;
433  vlib_main_t *vm;
434  u32 bi = 0;
435 
436  vm = vlib_get_main ();
437 
438  si = vnet_get_sw_interface (vnm, adj->rewrite_header.sw_if_index);
439  dst = &adj->sub_type.nbr.next_hop.ip6;
440 
441  if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
442  {
443  return;
444  }
445  src = ip6_interface_address_matching_destination (im, dst,
446  adj->rewrite_header.
447  sw_if_index, &ia);
448  if (!src)
449  {
450  return;
451  }
452 
453  h = vlib_packet_template_get_packet (vm,
454  &im->discover_neighbor_packet_template,
455  &bi);
456 
457  hi = vnet_get_sup_hw_interface (vnm, adj->rewrite_header.sw_if_index);
458 
459  h->ip.dst_address.as_u8[13] = dst->as_u8[13];
460  h->ip.dst_address.as_u8[14] = dst->as_u8[14];
461  h->ip.dst_address.as_u8[15] = dst->as_u8[15];
462  h->ip.src_address = src[0];
463  h->neighbor.target_address = dst[0];
464 
465  clib_memcpy (h->link_layer_option.ethernet_address,
466  hi->hw_address, vec_len (hi->hw_address));
467 
468  h->neighbor.icmp.checksum =
469  ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h->ip, &bogus_length);
470  ASSERT (bogus_length == 0);
471 
472  b = vlib_get_buffer (vm, bi);
473  vnet_buffer (b)->sw_if_index[VLIB_RX] =
474  vnet_buffer (b)->sw_if_index[VLIB_TX] = adj->rewrite_header.sw_if_index;
475 
476  /* Add encapsulation string for software interface (e.g. ethernet header). */
477  vnet_rewrite_one_header (adj[0], h, sizeof (ethernet_header_t));
478  vlib_buffer_advance (b, -adj->rewrite_header.data_bytes);
479 
480  {
481  vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index);
482  u32 *to_next = vlib_frame_vector_args (f);
483  to_next[0] = bi;
484  f->n_vectors = 1;
485  vlib_put_frame_to_node (vm, hi->output_node_index, f);
486  }
487 }
488 
489 static void
490 ip6_nd_mk_complete (adj_index_t ai, ip6_neighbor_t * nbr)
491 {
492  adj_nbr_update_rewrite (ai, ADJ_NBR_REWRITE_FLAG_COMPLETE,
493  ethernet_build_rewrite (vnet_get_main (),
494  nbr->key.sw_if_index,
495  adj_get_link_type (ai),
496  nbr->link_layer_address));
497 }
498 
499 static void
500 ip6_nd_mk_incomplete (adj_index_t ai)
501 {
502  ip_adjacency_t *adj = adj_get (ai);
503 
504  adj_nbr_update_rewrite (ai,
505  ADJ_NBR_REWRITE_FLAG_INCOMPLETE,
506  ethernet_build_rewrite (vnet_get_main (),
507  adj->rewrite_header.
508  sw_if_index,
509  adj_get_link_type (ai),
510  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
511 }
512 
513 #define IP6_NBR_MK_KEY(k, sw_if_index, addr) \
514 { \
515  k.sw_if_index = sw_if_index; \
516  k.ip6_address = *addr; \
517  k.pad = 0; \
518 }
519 
520 static ip6_neighbor_t *
521 ip6_nd_find (u32 sw_if_index, const ip6_address_t * addr)
522 {
523  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
524  ip6_neighbor_t *n = NULL;
525  ip6_neighbor_key_t k;
526  uword *p;
527 
528  IP6_NBR_MK_KEY (k, sw_if_index, addr);
529 
530  p = mhash_get (&nm->neighbor_index_by_key, &k);
531  if (p)
532  {
533  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
534  }
535 
536  return (n);
537 }
538 
539 static adj_walk_rc_t
540 ip6_nd_mk_complete_walk (adj_index_t ai, void *ctx)
541 {
542  ip6_neighbor_t *nbr = ctx;
543 
544  ip6_nd_mk_complete (ai, nbr);
545 
546  return (ADJ_WALK_RC_CONTINUE);
547 }
548 
549 static adj_walk_rc_t
550 ip6_nd_mk_incomplete_walk (adj_index_t ai, void *ctx)
551 {
552  ip6_nd_mk_incomplete (ai);
553 
554  return (ADJ_WALK_RC_CONTINUE);
555 }
556 
557 void
558 ip6_ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
559 {
560  ip6_neighbor_t *nbr;
561  ip_adjacency_t *adj;
562 
563  adj = adj_get (ai);
564 
565  nbr = ip6_nd_find (sw_if_index, &adj->sub_type.nbr.next_hop.ip6);
566 
567  switch (adj->lookup_next_index)
568  {
569  case IP_LOOKUP_NEXT_ARP:
570  case IP_LOOKUP_NEXT_GLEAN:
571  if (NULL != nbr)
572  {
573  adj_nbr_walk_nh6 (sw_if_index, &nbr->key.ip6_address,
574  ip6_nd_mk_complete_walk, nbr);
575  }
576  else
577  {
578  /*
579  * no matching ND entry.
580  * construct the rewrite required to for an ND packet, and stick
581  * that in the adj's pipe to smoke.
582  */
583  adj_nbr_update_rewrite (ai,
584  ADJ_NBR_REWRITE_FLAG_INCOMPLETE,
585  ethernet_build_rewrite (vnm,
586  sw_if_index,
587  VNET_LINK_IP6,
588  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
589 
590  /*
591  * since the FIB has added this adj for a route, it makes sense it may
592  * want to forward traffic sometime soon. Let's send a speculative ND.
593  * just one. If we were to do periodically that wouldn't be bad either,
594  * but that's more code than i'm prepared to write at this time for
595  * relatively little reward.
596  */
597  ip6_nbr_probe (adj);
598  }
599  break;
600  case IP_LOOKUP_NEXT_MCAST:
601  {
602  /*
603  * Construct a partial rewrite from the known ethernet mcast dest MAC
604  */
605  u8 *rewrite;
606  u8 offset;
607 
608  rewrite = ethernet_build_rewrite (vnm,
609  sw_if_index,
610  adj->ia_link,
611  ethernet_ip6_mcast_dst_addr ());
612 
613  /*
614  * Complete the remaining fields of the adj's rewrite to direct the
615  * complete of the rewrite at switch time by copying in the IP
616  * dst address's bytes.
617  * Ofset is 2 bytes into the desintation address. And we write 4 bytes.
618  */
619  offset = vec_len (rewrite) - 2;
620  adj_mcast_update_rewrite (ai, rewrite, offset, 0xffffffff);
621 
622  break;
623  }
624  case IP_LOOKUP_NEXT_DROP:
625  case IP_LOOKUP_NEXT_PUNT:
626  case IP_LOOKUP_NEXT_LOCAL:
627  case IP_LOOKUP_NEXT_REWRITE:
628  case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
629  case IP_LOOKUP_NEXT_MIDCHAIN:
630  case IP_LOOKUP_NEXT_ICMP_ERROR:
631  case IP_LOOKUP_N_NEXT:
632  ASSERT (0);
633  break;
634  }
635 }
636 
637 
638 static void
639 ip6_neighbor_adj_fib_add (ip6_neighbor_t * n, u32 fib_index)
640 {
641  fib_prefix_t pfx = {
642  .fp_len = 128,
643  .fp_proto = FIB_PROTOCOL_IP6,
644  .fp_addr.ip6 = n->key.ip6_address,
645  };
646 
647  n->fib_entry_index =
648  fib_table_entry_path_add (fib_index, &pfx, FIB_SOURCE_ADJ,
649  FIB_ENTRY_FLAG_ATTACHED,
650  DPO_PROTO_IP6, &pfx.fp_addr,
651  n->key.sw_if_index, ~0, 1, NULL,
652  FIB_ROUTE_PATH_FLAG_NONE);
653 }
654 
655 int
656 vnet_set_ip6_ethernet_neighbor (vlib_main_t * vm,
657  u32 sw_if_index,
658  ip6_address_t * a,
659  u8 * link_layer_address,
660  uword n_bytes_link_layer_address,
661  int is_static, int is_no_fib_entry)
662 {
663  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
664  ip6_neighbor_key_t k;
665  ip6_neighbor_t *n = 0;
666  int make_new_nd_cache_entry = 1;
667  uword *p;
668  u32 next_index;
669  pending_resolution_t *pr, *mc;
670 
671  if (vlib_get_thread_index ())
672  {
673  set_unset_ip6_neighbor_rpc (vm, sw_if_index, a, link_layer_address,
674  1 /* set new neighbor */ , is_static,
675  is_no_fib_entry);
676  return 0;
677  }
678 
679  k.sw_if_index = sw_if_index;
680  k.ip6_address = a[0];
681  k.pad = 0;
682 
683  p = mhash_get (&nm->neighbor_index_by_key, &k);
684  if (p)
685  {
686  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
687  /* Refuse to over-write static neighbor entry. */
688  if (!is_static && (n->flags & IP6_NEIGHBOR_FLAG_STATIC))
689  return -2;
690  make_new_nd_cache_entry = 0;
691  }
692 
693  if (make_new_nd_cache_entry)
694  {
695  pool_get (nm->neighbor_pool, n);
696  mhash_set (&nm->neighbor_index_by_key, &k, n - nm->neighbor_pool,
697  /* old value */ 0);
698  n->key = k;
699  n->fib_entry_index = FIB_NODE_INDEX_INVALID;
700 
701  clib_memcpy (n->link_layer_address,
702  link_layer_address, n_bytes_link_layer_address);
703 
704  /*
705  * create the adj-fib. the entry in the FIB table for and to the peer.
706  */
707  if (!is_no_fib_entry)
708  {
709  ip6_neighbor_adj_fib_add (n,
710  ip6_fib_table_get_index_for_sw_if_index
711  (n->key.sw_if_index));
712  }
713  else
714  {
715  n->flags |= IP6_NEIGHBOR_FLAG_NO_FIB_ENTRY;
716  }
717  }
718  else
719  {
720  /*
721  * prevent a DoS attack from the data-plane that
722  * spams us with no-op updates to the MAC address
723  */
724  if (0 == memcmp (n->link_layer_address,
725  link_layer_address, n_bytes_link_layer_address))
726  goto check_customers;
727 
728  clib_memcpy (n->link_layer_address,
729  link_layer_address, n_bytes_link_layer_address);
730  }
731 
732  /* Update time stamp and flags. */
733  n->cpu_time_last_updated = clib_cpu_time_now ();
734  if (is_static)
735  n->flags |= IP6_NEIGHBOR_FLAG_STATIC;
736  else
737  n->flags |= IP6_NEIGHBOR_FLAG_DYNAMIC;
738 
739  adj_nbr_walk_nh6 (sw_if_index,
740  &n->key.ip6_address, ip6_nd_mk_complete_walk, n);
741 
742 check_customers:
743  /* Customer(s) waiting for this address to be resolved? */
744  p = mhash_get (&nm->pending_resolutions_by_address, a);
745  if (p)
746  {
747  next_index = p[0];
748 
749  while (next_index != (u32) ~ 0)
750  {
751  pr = pool_elt_at_index (nm->pending_resolutions, next_index);
752  vlib_process_signal_event (vm, pr->node_index,
753  pr->type_opaque, pr->data);
754  next_index = pr->next_index;
755  pool_put (nm->pending_resolutions, pr);
756  }
757 
758  mhash_unset (&nm->pending_resolutions_by_address, a, 0);
759  }
760 
761  /* Customer(s) requesting ND event for this address? */
762  p = mhash_get (&nm->mac_changes_by_address, a);
763  if (p)
764  {
765  next_index = p[0];
766 
767  while (next_index != (u32) ~ 0)
768  {
769  int (*fp) (u32, u8 *, u32, ip6_address_t *);
770  int rv = 1;
771  mc = pool_elt_at_index (nm->mac_changes, next_index);
772  fp = mc->data_callback;
773 
774  /* Call the user's data callback, return 1 to suppress dup events */
775  if (fp)
776  rv =
777  (*fp) (mc->data, link_layer_address, sw_if_index, &ip6a_zero);
778  /*
779  * Signal the resolver process, as long as the user
780  * says they want to be notified
781  */
782  if (rv == 0)
783  vlib_process_signal_event (vm, mc->node_index,
784  mc->type_opaque, mc->data);
785  next_index = mc->next_index;
786  }
787  }
788 
789  return 0;
790 }
791 
792 int
793 vnet_unset_ip6_ethernet_neighbor (vlib_main_t * vm,
794  u32 sw_if_index,
795  ip6_address_t * a,
796  u8 * link_layer_address,
797  uword n_bytes_link_layer_address)
798 {
799  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
800  ip6_neighbor_key_t k;
801  ip6_neighbor_t *n;
802  uword *p;
803  int rv = 0;
804 
805  if (vlib_get_thread_index ())
806  {
807  set_unset_ip6_neighbor_rpc (vm, sw_if_index, a, link_layer_address,
808  0 /* unset */ , 0, 0);
809  return 0;
810  }
811 
812  k.sw_if_index = sw_if_index;
813  k.ip6_address = a[0];
814  k.pad = 0;
815 
816  p = mhash_get (&nm->neighbor_index_by_key, &k);
817  if (p == 0)
818  {
819  rv = -1;
820  goto out;
821  }
822 
823  n = pool_elt_at_index (nm->neighbor_pool, p[0]);
824  mhash_unset (&nm->neighbor_index_by_key, &n->key, 0);
825 
826  adj_nbr_walk_nh6 (sw_if_index,
827  &n->key.ip6_address, ip6_nd_mk_incomplete_walk, NULL);
828 
829 
830  if (FIB_NODE_INDEX_INVALID != n->fib_entry_index)
831  {
832  fib_prefix_t pfx = {
833  .fp_len = 128,
834  .fp_proto = FIB_PROTOCOL_IP6,
835  .fp_addr.ip6 = n->key.ip6_address,
836  };
837  fib_table_entry_path_remove
838  (ip6_fib_table_get_index_for_sw_if_index (n->key.sw_if_index),
839  &pfx,
840  FIB_SOURCE_ADJ,
841  DPO_PROTO_IP6,
842  &pfx.fp_addr, n->key.sw_if_index, ~0, 1, FIB_ROUTE_PATH_FLAG_NONE);
843  }
844  pool_put (nm->neighbor_pool, n);
845 
846 out:
847  return rv;
848 }
849 
850 static void ip6_neighbor_set_unset_rpc_callback
851  (ip6_neighbor_set_unset_rpc_args_t * a)
852 {
853  vlib_main_t *vm = vlib_get_main ();
854  if (a->is_add)
855  vnet_set_ip6_ethernet_neighbor (vm, a->sw_if_index, &a->addr,
856  a->link_layer_address, 6, a->is_static,
857  a->is_no_fib_entry);
858  else
859  vnet_unset_ip6_ethernet_neighbor (vm, a->sw_if_index, &a->addr,
860  a->link_layer_address, 6);
861 }
862 
863 static int
864 ip6_neighbor_sort (void *a1, void *a2)
865 {
866  vnet_main_t *vnm = vnet_get_main ();
867  ip6_neighbor_t *n1 = a1, *n2 = a2;
868  int cmp;
869  cmp = vnet_sw_interface_compare (vnm, n1->key.sw_if_index,
870  n2->key.sw_if_index);
871  if (!cmp)
872  cmp = ip6_address_compare (&n1->key.ip6_address, &n2->key.ip6_address);
873  return cmp;
874 }
875 
876 ip6_neighbor_t *
877 ip6_neighbors_entries (u32 sw_if_index)
878 {
879  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
880  ip6_neighbor_t *n, *ns = 0;
881 
882  /* *INDENT-OFF* */
883  pool_foreach (n, nm->neighbor_pool,
884  ({
885  if (sw_if_index != ~0 && n->key.sw_if_index != sw_if_index)
886  continue;
887  vec_add1 (ns, n[0]);
888  }));
889  /* *INDENT-ON* */
890 
891  if (ns)
892  vec_sort_with_function (ns, ip6_neighbor_sort);
893  return ns;
894 }
895 
896 static clib_error_t *
897 show_ip6_neighbors (vlib_main_t * vm,
898  unformat_input_t * input, vlib_cli_command_t * cmd)
899 {
900  vnet_main_t *vnm = vnet_get_main ();
901  ip6_neighbor_t *n, *ns;
902  clib_error_t *error = 0;
903  u32 sw_if_index;
904 
905  /* Filter entries by interface if given. */
906  sw_if_index = ~0;
907  (void) unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index);
908 
909  ns = ip6_neighbors_entries (sw_if_index);
910  if (ns)
911  {
912  vlib_cli_output (vm, "%U", format_ip6_neighbor_ip6_entry, vm, 0);
913  vec_foreach (n, ns)
914  {
915  vlib_cli_output (vm, "%U", format_ip6_neighbor_ip6_entry, vm, n);
916  }
917  vec_free (ns);
918  }
919 
920  return error;
921 }
922 
923 /*?
924  * This command is used to display the adjacent IPv6 hosts found via
925  * neighbor discovery. Optionally, limit the output to the specified
926  * interface.
927  *
928  * @cliexpar
929  * Example of how to display the IPv6 neighbor adjacency table:
930  * @cliexstart{show ip6 neighbors}
931  * Time Address Flags Link layer Interface
932  * 34.0910 ::a:1:1:0:7 02:fe:6a:07:39:6f GigabitEthernet2/0/0
933  * 173.2916 ::b:5:1:c:2 02:fe:50:62:3a:94 GigabitEthernet2/0/0
934  * 886.6654 ::1:1:c:0:9 S 02:fe:e4:45:27:5b GigabitEthernet3/0/0
935  * @cliexend
936  * Example of how to display the IPv6 neighbor adjacency table for given interface:
937  * @cliexstart{show ip6 neighbors GigabitEthernet2/0/0}
938  * Time Address Flags Link layer Interface
939  * 34.0910 ::a:1:1:0:7 02:fe:6a:07:39:6f GigabitEthernet2/0/0
940  * 173.2916 ::b:5:1:c:2 02:fe:50:62:3a:94 GigabitEthernet2/0/0
941  * @cliexend
942 ?*/
943 /* *INDENT-OFF* */
944 VLIB_CLI_COMMAND (show_ip6_neighbors_command, static) = {
945  .path = "show ip6 neighbors",
946  .function = show_ip6_neighbors,
947  .short_help = "show ip6 neighbors [<interface>]",
948 };
949 /* *INDENT-ON* */
950 
951 static clib_error_t *
952 set_ip6_neighbor (vlib_main_t * vm,
953  unformat_input_t * input, vlib_cli_command_t * cmd)
954 {
955  vnet_main_t *vnm = vnet_get_main ();
956  ip6_address_t addr;
957  u8 mac_address[6];
958  int addr_valid = 0;
959  int is_del = 0;
960  int is_static = 0;
961  int is_no_fib_entry = 0;
962  u32 sw_if_index;
963 
964  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
965  {
966  /* intfc, ip6-address, mac-address */
967  if (unformat (input, "%U %U %U",
968  unformat_vnet_sw_interface, vnm, &sw_if_index,
969  unformat_ip6_address, &addr,
970  unformat_ethernet_address, mac_address))
971  addr_valid = 1;
972 
973  else if (unformat (input, "delete") || unformat (input, "del"))
974  is_del = 1;
975  else if (unformat (input, "static"))
976  is_static = 1;
977  else if (unformat (input, "no-fib-entry"))
978  is_no_fib_entry = 1;
979  else
980  break;
981  }
982 
983  if (!addr_valid)
984  return clib_error_return (0, "Missing interface, ip6 or hw address");
985 
986  if (!is_del)
987  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index, &addr,
988  mac_address, sizeof (mac_address),
989  is_static, is_no_fib_entry);
990  else
991  vnet_unset_ip6_ethernet_neighbor (vm, sw_if_index, &addr,
992  mac_address, sizeof (mac_address));
993  return 0;
994 }
995 
996 /*?
997  * This command is used to manually add an entry to the IPv6 neighbor
998  * adjacency table. Optionally, the entry can be added as static. It is
999  * also used to remove an entry from the table. Use the '<em>show ip6
1000  * neighbors</em>' command to display all learned and manually entered entries.
1001  *
1002  * @cliexpar
1003  * Example of how to add a static entry to the IPv6 neighbor adjacency table:
1004  * @cliexcmd{set ip6 neighbor GigabitEthernet2/0/0 ::1:1:c:0:9 02:fe:e4:45:27:5b static}
1005  * Example of how to delete an entry from the IPv6 neighbor adjacency table:
1006  * @cliexcmd{set ip6 neighbor del GigabitEthernet2/0/0 ::1:1:c:0:9 02:fe:e4:45:27:5b}
1007 ?*/
1008 /* *INDENT-OFF* */
1009 VLIB_CLI_COMMAND (set_ip6_neighbor_command, static) =
1010 {
1011  .path = "set ip6 neighbor",
1012  .function = set_ip6_neighbor,
1013  .short_help = "set ip6 neighbor [del] <interface> <ip6-address> <mac-address> [static]",
1014 };
1015 /* *INDENT-ON* */
1016 
1017 typedef enum
1018 {
1019  ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP,
1020  ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY,
1021  ICMP6_NEIGHBOR_SOLICITATION_N_NEXT,
1022 } icmp6_neighbor_solicitation_or_advertisement_next_t;
1023 
1024 static_always_inline uword
1025 icmp6_neighbor_solicitation_or_advertisement (vlib_main_t * vm,
1026  vlib_node_runtime_t * node,
1027  vlib_frame_t * frame,
1028  uword is_solicitation)
1029 {
1030  vnet_main_t *vnm = vnet_get_main ();
1031  ip6_main_t *im = &ip6_main;
1032  uword n_packets = frame->n_vectors;
1033  u32 *from, *to_next;
1034  u32 n_left_from, n_left_to_next, next_index, n_advertisements_sent;
1035  icmp6_neighbor_discovery_option_type_t option_type;
1036  vlib_node_runtime_t *error_node =
1037  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1038  int bogus_length;
1039 
1040  from = vlib_frame_vector_args (frame);
1041  n_left_from = n_packets;
1042  next_index = node->cached_next_index;
1043 
1044  if (node->flags & VLIB_NODE_FLAG_TRACE)
1045  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1046  /* stride */ 1,
1047  sizeof (icmp6_input_trace_t));
1048 
1049  option_type =
1050  (is_solicitation
1051  ? ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address
1052  : ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address);
1053  n_advertisements_sent = 0;
1054 
1055  while (n_left_from > 0)
1056  {
1057  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1058 
1059  while (n_left_from > 0 && n_left_to_next > 0)
1060  {
1061  vlib_buffer_t *p0;
1062  ip6_header_t *ip0;
1063  icmp6_neighbor_solicitation_or_advertisement_header_t *h0;
1064  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *o0;
1065  u32 bi0, options_len0, sw_if_index0, next0, error0;
1066  u32 ip6_sadd_link_local, ip6_sadd_unspecified;
1067  int is_rewrite0;
1068  u32 ni0;
1069 
1070  bi0 = to_next[0] = from[0];
1071 
1072  from += 1;
1073  to_next += 1;
1074  n_left_from -= 1;
1075  n_left_to_next -= 1;
1076 
1077  p0 = vlib_get_buffer (vm, bi0);
1078  ip0 = vlib_buffer_get_current (p0);
1079  h0 = ip6_next_header (ip0);
1080  options_len0 =
1081  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1082 
1083  error0 = ICMP6_ERROR_NONE;
1084  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1085  ip6_sadd_link_local =
1086  ip6_address_is_link_local_unicast (&ip0->src_address);
1087  ip6_sadd_unspecified =
1088  ip6_address_is_unspecified (&ip0->src_address);
1089 
1090  /* Check that source address is unspecified, link-local or else on-link. */
1091  if (!ip6_sadd_unspecified && !ip6_sadd_link_local)
1092  {
1093  u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
1094 
1095  if (ADJ_INDEX_INVALID != src_adj_index0)
1096  {
1097  ip_adjacency_t *adj0 = adj_get (src_adj_index0);
1098 
1099  /* Allow all realistic-looking rewrite adjacencies to pass */
1100  ni0 = adj0->lookup_next_index;
1101  is_rewrite0 = (ni0 >= IP_LOOKUP_NEXT_ARP) &&
1102  (ni0 < IP6_LOOKUP_N_NEXT);
1103 
1104  error0 = ((adj0->rewrite_header.sw_if_index != sw_if_index0
1105  || !is_rewrite0)
1106  ?
1107  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_NOT_ON_LINK
1108  : error0);
1109  }
1110  else
1111  {
1112  error0 =
1113  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_NOT_ON_LINK;
1114  }
1115  }
1116 
1117  o0 = (void *) (h0 + 1);
1118  o0 = ((options_len0 == 8 && o0->header.type == option_type
1119  && o0->header.n_data_u64s == 1) ? o0 : 0);
1120 
1121  /* If src address unspecified or link local, donot learn neighbor MAC */
1122  if (PREDICT_TRUE (error0 == ICMP6_ERROR_NONE && o0 != 0 &&
1123  !ip6_sadd_unspecified))
1124  {
1125  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1126  if (nm->limit_neighbor_cache_size &&
1127  pool_elts (nm->neighbor_pool) >=
1128  nm->limit_neighbor_cache_size)
1129  unset_random_neighbor_entry ();
1130  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index0,
1131  is_solicitation ?
1132  &ip0->src_address :
1133  &h0->target_address,
1134  o0->ethernet_address,
1135  sizeof (o0->ethernet_address),
1136  0, ip6_sadd_link_local);
1137  }
1138 
1139  if (is_solicitation && error0 == ICMP6_ERROR_NONE)
1140  {
1141  /* Check that target address is local to this router. */
1142  fib_node_index_t fei;
1143  u32 fib_index;
1144 
1145  fib_index =
1146  ip6_fib_table_get_index_for_sw_if_index (sw_if_index0);
1147 
1148  if (~0 == fib_index)
1149  {
1150  error0 = ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1151  }
1152  else
1153  {
1154  fei = ip6_fib_table_lookup_exact_match (fib_index,
1155  &h0->target_address,
1156  128);
1157 
1158  if (FIB_NODE_INDEX_INVALID == fei)
1159  {
1160  /* The target address is not in the FIB */
1161  error0 =
1162  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1163  }
1164  else
1165  {
1166  if (FIB_ENTRY_FLAG_LOCAL &
1167  fib_entry_get_flags_for_source (fei,
1168  FIB_SOURCE_INTERFACE))
1169  {
1170  /* It's an address that belongs to one of our interfaces
1171  * that's good. */
1172  }
1173  else
1174  if (fib_entry_is_sourced
1175  (fei, FIB_SOURCE_IP6_ND_PROXY))
1176  {
1177  /* The address was added by IPv6 Proxy ND config.
1178  * We should only respond to these if the NS arrived on
1179  * the link that has a matching covering prefix */
1180  }
1181  else
1182  {
1183  error0 =
1184  ICMP6_ERROR_NEIGHBOR_SOLICITATION_SOURCE_UNKNOWN;
1185  }
1186  }
1187  }
1188  }
1189 
1190  if (is_solicitation)
1191  next0 = (error0 != ICMP6_ERROR_NONE
1192  ? ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP
1193  : ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY);
1194  else
1195  {
1196  next0 = 0;
1197  error0 = error0 == ICMP6_ERROR_NONE ?
1198  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_RX : error0;
1199  }
1200 
1201  if (is_solicitation && error0 == ICMP6_ERROR_NONE)
1202  {
1203  vnet_sw_interface_t *sw_if0;
1204  ethernet_interface_t *eth_if0;
1205  ethernet_header_t *eth0;
1206 
1207  /* dst address is either source address or the all-nodes mcast addr */
1208  if (!ip6_sadd_unspecified)
1209  ip0->dst_address = ip0->src_address;
1210  else
1211  ip6_set_reserved_multicast_address (&ip0->dst_address,
1212  IP6_MULTICAST_SCOPE_link_local,
1213  IP6_MULTICAST_GROUP_ID_all_hosts);
1214 
1215  ip0->src_address = h0->target_address;
1216  ip0->hop_limit = 255;
1217  h0->icmp.type = ICMP6_neighbor_advertisement;
1218 
1219  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1220  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1221  eth_if0 =
1222  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1223  if (eth_if0 && o0)
1224  {
1225  clib_memcpy (o0->ethernet_address, eth_if0->address, 6);
1226  o0->header.type =
1227  ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
1228  }
1229 
1230  h0->advertisement_flags = clib_host_to_net_u32
1231  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
1232  | ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
1233 
1234  h0->icmp.checksum = 0;
1235  h0->icmp.checksum =
1236  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0,
1237  &bogus_length);
1238  ASSERT (bogus_length == 0);
1239 
1240  /* Reuse current MAC header, copy SMAC to DMAC and
1241  * interface MAC to SMAC */
1242  vlib_buffer_advance (p0, -ethernet_buffer_header_size (p0));
1243  eth0 = vlib_buffer_get_current (p0);
1244  clib_memcpy (eth0->dst_address, eth0->src_address, 6);
1245  if (eth_if0)
1246  clib_memcpy (eth0->src_address, eth_if0->address, 6);
1247 
1248  /* Setup input and output sw_if_index for packet */
1249  ASSERT (vnet_buffer (p0)->sw_if_index[VLIB_RX] == sw_if_index0);
1250  vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0;
1251  vnet_buffer (p0)->sw_if_index[VLIB_RX] =
1252  vnet_main.local_interface_sw_if_index;
1253 
1254  n_advertisements_sent++;
1255  }
1256 
1257  p0->error = error_node->errors[error0];
1258 
1259  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1260  to_next, n_left_to_next,
1261  bi0, next0);
1262  }
1263 
1264  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1265  }
1266 
1267  /* Account for advertisements sent. */
1268  vlib_error_count (vm, error_node->node_index,
1269  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_TX,
1270  n_advertisements_sent);
1271 
1272  return frame->n_vectors;
1273 }
1274 
1275 /* for "syslogging" - use elog for now */
1276 #define foreach_log_level \
1277  _ (DEBUG, "DEBUG") \
1278  _ (INFO, "INFORMATION") \
1279  _ (NOTICE, "NOTICE") \
1280  _ (WARNING, "WARNING") \
1281  _ (ERR, "ERROR") \
1282  _ (CRIT, "CRITICAL") \
1283  _ (ALERT, "ALERT") \
1284  _ (EMERG, "EMERGENCY")
1285 
1286 typedef enum
1287 {
1288 #define _(f,s) LOG_##f,
1289  foreach_log_level
1290 #undef _
1291 } log_level_t;
1292 
1293 static char *log_level_strings[] = {
1294 #define _(f,s) s,
1295  foreach_log_level
1296 #undef _
1297 };
1298 
1299 static int logmask = 1 << LOG_DEBUG;
1300 
1301 static void
1302 ip6_neighbor_syslog (vlib_main_t * vm, int priority, char *fmt, ...)
1303 {
1304  /* just use elog for now */
1305  u8 *what;
1306  va_list va;
1307 
1308  if ((priority > LOG_EMERG) || !(logmask & (1 << priority)))
1309  return;
1310 
1311  va_start (va, fmt);
1312  if (fmt)
1313  {
1314  what = va_format (0, fmt, &va);
1315 
1316  ELOG_TYPE_DECLARE (e) =
1317  {
1318  .format = "ip6 nd: (%s): %s",.format_args = "T4T4",};
1319  struct
1320  {
1321  u32 s[2];
1322  } *ed;
1323  ed = ELOG_DATA (&vm->elog_main, e);
1324  ed->s[0] = elog_string (&vm->elog_main, log_level_strings[priority]);
1325  ed->s[1] = elog_string (&vm->elog_main, (char *) what);
1326  }
1327  va_end (va);
1328  return;
1329 }
1330 
1331 /* ipv6 neighbor discovery - router advertisements */
1332 typedef enum
1333 {
1334  ICMP6_ROUTER_SOLICITATION_NEXT_DROP,
1335  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW,
1336  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX,
1337  ICMP6_ROUTER_SOLICITATION_N_NEXT,
1338 } icmp6_router_solicitation_or_advertisement_next_t;
1339 
1340 static_always_inline uword
1341 icmp6_router_solicitation (vlib_main_t * vm,
1342  vlib_node_runtime_t * node, vlib_frame_t * frame)
1343 {
1344  vnet_main_t *vnm = vnet_get_main ();
1345  ip6_main_t *im = &ip6_main;
1346  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1347  uword n_packets = frame->n_vectors;
1348  u32 *from, *to_next;
1349  u32 n_left_from, n_left_to_next, next_index;
1350  u32 n_advertisements_sent = 0;
1351  int bogus_length;
1352 
1353  icmp6_neighbor_discovery_option_type_t option_type;
1354 
1355  vlib_node_runtime_t *error_node =
1356  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1357 
1358  from = vlib_frame_vector_args (frame);
1359  n_left_from = n_packets;
1360  next_index = node->cached_next_index;
1361 
1362  if (node->flags & VLIB_NODE_FLAG_TRACE)
1363  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1364  /* stride */ 1,
1365  sizeof (icmp6_input_trace_t));
1366 
1367  /* source may append his LL address */
1368  option_type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
1369 
1370  while (n_left_from > 0)
1371  {
1372  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1373 
1374  while (n_left_from > 0 && n_left_to_next > 0)
1375  {
1376  vlib_buffer_t *p0;
1377  ip6_header_t *ip0;
1378  ip6_radv_t *radv_info = 0;
1379 
1380  icmp6_neighbor_discovery_header_t *h0;
1381  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *o0;
1382 
1383  u32 bi0, options_len0, sw_if_index0, next0, error0;
1384  u32 is_solicitation = 1, is_dropped = 0;
1385  u32 is_unspecified, is_link_local;
1386 
1387  bi0 = to_next[0] = from[0];
1388 
1389  from += 1;
1390  to_next += 1;
1391  n_left_from -= 1;
1392  n_left_to_next -= 1;
1393 
1394  p0 = vlib_get_buffer (vm, bi0);
1395  ip0 = vlib_buffer_get_current (p0);
1396  h0 = ip6_next_header (ip0);
1397  options_len0 =
1398  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1399  is_unspecified = ip6_address_is_unspecified (&ip0->src_address);
1400  is_link_local =
1401  ip6_address_is_link_local_unicast (&ip0->src_address);
1402 
1403  error0 = ICMP6_ERROR_NONE;
1404  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1405 
1406  /* check if solicitation (not from nd_timer node) */
1407  if (ip6_address_is_unspecified (&ip0->dst_address))
1408  is_solicitation = 0;
1409 
1410  /* Check that source address is unspecified, link-local or else on-link. */
1411  if (!is_unspecified && !is_link_local)
1412  {
1413  u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
1414 
1415  if (ADJ_INDEX_INVALID != src_adj_index0)
1416  {
1417  ip_adjacency_t *adj0 = adj_get (src_adj_index0);
1418 
1419  error0 = (adj0->rewrite_header.sw_if_index != sw_if_index0
1420  ?
1421  ICMP6_ERROR_ROUTER_SOLICITATION_SOURCE_NOT_ON_LINK
1422  : error0);
1423  }
1424  else
1425  {
1426  error0 = ICMP6_ERROR_ROUTER_SOLICITATION_SOURCE_NOT_ON_LINK;
1427  }
1428  }
1429 
1430  /* check for source LL option and process */
1431  o0 = (void *) (h0 + 1);
1432  o0 = ((options_len0 == 8
1433  && o0->header.type == option_type
1434  && o0->header.n_data_u64s == 1) ? o0 : 0);
1435 
1436  /* if src address unspecified IGNORE any options */
1437  if (PREDICT_TRUE (error0 == ICMP6_ERROR_NONE && o0 != 0 &&
1438  !is_unspecified && !is_link_local))
1439  {
1440  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1441  if (nm->limit_neighbor_cache_size &&
1442  pool_elts (nm->neighbor_pool) >=
1443  nm->limit_neighbor_cache_size)
1444  unset_random_neighbor_entry ();
1445 
1446  vnet_set_ip6_ethernet_neighbor (vm, sw_if_index0,
1447  &ip0->src_address,
1448  o0->ethernet_address,
1449  sizeof (o0->ethernet_address),
1450  0, 0);
1451  }
1452 
1453  /* default is to drop */
1454  next0 = ICMP6_ROUTER_SOLICITATION_NEXT_DROP;
1455 
1456  if (error0 == ICMP6_ERROR_NONE)
1457  {
1458  vnet_sw_interface_t *sw_if0;
1459  ethernet_interface_t *eth_if0;
1460  u32 adj_index0;
1461 
1462  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1463  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1464  eth_if0 =
1465  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1466 
1467  /* only support ethernet interface type for now */
1468  error0 =
1469  (!eth_if0) ? ICMP6_ERROR_ROUTER_SOLICITATION_UNSUPPORTED_INTF
1470  : error0;
1471 
1472  if (error0 == ICMP6_ERROR_NONE)
1473  {
1474  u32 ri;
1475 
1476  /* adjust the sizeof the buffer to just include the ipv6 header */
1477  p0->current_length -=
1478  (options_len0 +
1479  sizeof (icmp6_neighbor_discovery_header_t));
1480 
1481  /* look up the radv_t information for this interface */
1482  vec_validate_init_empty
1483  (nm->if_radv_pool_index_by_sw_if_index, sw_if_index0, ~0);
1484 
1485  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
1486 
1487  if (ri != ~0)
1488  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
1489 
1490  error0 =
1491  ((!radv_info) ?
1492  ICMP6_ERROR_ROUTER_SOLICITATION_RADV_NOT_CONFIG :
1493  error0);
1494 
1495  if (error0 == ICMP6_ERROR_NONE)
1496  {
1497  f64 now = vlib_time_now (vm);
1498 
1499  /* for solicited adverts - need to rate limit */
1500  if (is_solicitation)
1501  {
1502  if (0 != radv_info->last_radv_time &&
1503  (now - radv_info->last_radv_time) <
1504  MIN_DELAY_BETWEEN_RAS)
1505  is_dropped = 1;
1506  else
1507  radv_info->last_radv_time = now;
1508  }
1509 
1510  /* send now */
1511  icmp6_router_advertisement_header_t rh;
1512 
1513  rh.icmp.type = ICMP6_router_advertisement;
1514  rh.icmp.code = 0;
1515  rh.icmp.checksum = 0;
1516 
1517  rh.current_hop_limit = radv_info->curr_hop_limit;
1518  rh.router_lifetime_in_sec =
1519  clib_host_to_net_u16
1520  (radv_info->adv_router_lifetime_in_sec);
1521  rh.
1522  time_in_msec_between_retransmitted_neighbor_solicitations
1523  =
1524  clib_host_to_net_u32 (radv_info->
1525  adv_time_in_msec_between_retransmitted_neighbor_solicitations);
1526  rh.neighbor_reachable_time_in_msec =
1527  clib_host_to_net_u32 (radv_info->
1528  adv_neighbor_reachable_time_in_msec);
1529 
1530  rh.flags =
1531  (radv_info->adv_managed_flag) ?
1532  ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP :
1533  0;
1534  rh.flags |=
1535  ((radv_info->adv_other_flag) ?
1536  ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP :
1537  0);
1538 
1539 
1540  u16 payload_length =
1541  sizeof (icmp6_router_advertisement_header_t);
1542 
1543  vlib_buffer_add_data (vm,
1544  vlib_buffer_get_free_list_index
1545  (p0), bi0, (void *) &rh,
1546  sizeof
1547  (icmp6_router_advertisement_header_t));
1548 
1549  if (radv_info->adv_link_layer_address)
1550  {
1551  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t
1552  h;
1553 
1554  h.header.type =
1555  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address;
1556  h.header.n_data_u64s = 1;
1557 
1558  /* copy ll address */
1559  clib_memcpy (&h.ethernet_address[0],
1560  eth_if0->address, 6);
1561 
1562  vlib_buffer_add_data (vm,
1563  vlib_buffer_get_free_list_index
1564  (p0), bi0, (void *) &h,
1565  sizeof
1566  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t));
1567 
1568  payload_length +=
1569  sizeof
1570  (icmp6_neighbor_discovery_ethernet_link_layer_address_option_t);
1571  }
1572 
1573  /* add MTU option */
1574  if (radv_info->adv_link_mtu)
1575  {
1576  icmp6_neighbor_discovery_mtu_option_t h;
1577 
1578  h.unused = 0;
1579  h.mtu =
1580  clib_host_to_net_u32 (radv_info->adv_link_mtu);
1581  h.header.type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_mtu;
1582  h.header.n_data_u64s = 1;
1583 
1584  payload_length +=
1585  sizeof (icmp6_neighbor_discovery_mtu_option_t);
1586 
1587  vlib_buffer_add_data (vm,
1588  vlib_buffer_get_free_list_index
1589  (p0), bi0, (void *) &h,
1590  sizeof
1591  (icmp6_neighbor_discovery_mtu_option_t));
1592  }
1593 
1594  /* add advertised prefix options */
1595  ip6_radv_prefix_t *pr_info;
1596 
1597  /* *INDENT-OFF* */
1598  pool_foreach (pr_info, radv_info->adv_prefixes_pool,
1599  ({
1600  if(pr_info->enabled &&
1601  (!pr_info->decrement_lifetime_flag
1602  || (pr_info->pref_lifetime_expires >0)))
1603  {
1604  /* advertise this prefix */
1605  icmp6_neighbor_discovery_prefix_information_option_t h;
1606 
1607  h.header.type = ICMP6_NEIGHBOR_DISCOVERY_OPTION_prefix_information;
1608  h.header.n_data_u64s = (sizeof(icmp6_neighbor_discovery_prefix_information_option_t) >> 3);
1609 
1610  h.dst_address_length = pr_info->prefix_len;
1611 
1612  h.flags = (pr_info->adv_on_link_flag) ? ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_FLAG_ON_LINK : 0;
1613  h.flags |= (pr_info->adv_autonomous_flag) ? ICMP6_NEIGHBOR_DISCOVERY_PREFIX_INFORMATION_AUTO : 0;
1614 
1615  if(radv_info->cease_radv && pr_info->deprecated_prefix_flag)
1616  {
1617  h.valid_time = clib_host_to_net_u32(MIN_ADV_VALID_LIFETIME);
1618  h.preferred_time = 0;
1619  }
1620  else
1621  {
1622  if(pr_info->decrement_lifetime_flag)
1623  {
1624  pr_info->adv_valid_lifetime_in_secs = ((pr_info->valid_lifetime_expires > now)) ?
1625  (pr_info->valid_lifetime_expires - now) : 0;
1626 
1627  pr_info->adv_pref_lifetime_in_secs = ((pr_info->pref_lifetime_expires > now)) ?
1628  (pr_info->pref_lifetime_expires - now) : 0;
1629  }
1630 
1631  h.valid_time = clib_host_to_net_u32(pr_info->adv_valid_lifetime_in_secs);
1632  h.preferred_time = clib_host_to_net_u32(pr_info->adv_pref_lifetime_in_secs) ;
1633  }
1634  h.unused = 0;
1635 
1636  clib_memcpy(&h.dst_address, &pr_info->prefix, sizeof(ip6_address_t));
1637 
1638  payload_length += sizeof( icmp6_neighbor_discovery_prefix_information_option_t);
1639 
1640  vlib_buffer_add_data (vm,
1641  vlib_buffer_get_free_list_index (p0),
1642  bi0,
1643  (void *)&h, sizeof(icmp6_neighbor_discovery_prefix_information_option_t));
1644 
1645  }
1646  }));
1647  /* *INDENT-ON* */
1648 
1649  /* add additional options before here */
1650 
1651  /* finish building the router advertisement... */
1652  if (!is_unspecified && radv_info->send_unicast)
1653  {
1654  ip0->dst_address = ip0->src_address;
1655  }
1656  else
1657  {
1658  /* target address is all-nodes mcast addr */
1659  ip6_set_reserved_multicast_address
1660  (&ip0->dst_address,
1661  IP6_MULTICAST_SCOPE_link_local,
1662  IP6_MULTICAST_GROUP_ID_all_hosts);
1663  }
1664 
1665  /* source address MUST be the link-local address */
1666  ip0->src_address = radv_info->link_local_address;
1667 
1668  ip0->hop_limit = 255;
1669  ip0->payload_length =
1670  clib_host_to_net_u16 (payload_length);
1671 
1672  icmp6_router_advertisement_header_t *rh0 =
1673  (icmp6_router_advertisement_header_t *) (ip0 + 1);
1674  rh0->icmp.checksum =
1675  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip0,
1676  &bogus_length);
1677  ASSERT (bogus_length == 0);
1678 
1679  /* setup output if and adjacency */
1680  vnet_buffer (p0)->sw_if_index[VLIB_RX] =
1681  vnet_main.local_interface_sw_if_index;
1682 
1683  if (is_solicitation)
1684  {
1685  ethernet_header_t *eth0;
1686  /* Reuse current MAC header, copy SMAC to DMAC and
1687  * interface MAC to SMAC */
1688  vlib_buffer_reset (p0);
1689  eth0 = vlib_buffer_get_current (p0);
1690  clib_memcpy (eth0->dst_address, eth0->src_address,
1691  6);
1692  clib_memcpy (eth0->src_address, eth_if0->address,
1693  6);
1694  next0 =
1695  is_dropped ? next0 :
1696  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX;
1697  vnet_buffer (p0)->sw_if_index[VLIB_TX] =
1698  sw_if_index0;
1699  }
1700  else
1701  {
1702  adj_index0 = radv_info->mcast_adj_index;
1703  if (adj_index0 == 0)
1704  error0 = ICMP6_ERROR_DST_LOOKUP_MISS;
1705  else
1706  {
1707  next0 =
1708  is_dropped ? next0 :
1709  ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW;
1710  vnet_buffer (p0)->ip.adj_index[VLIB_TX] =
1711  adj_index0;
1712  }
1713  }
1714  p0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
1715 
1716  radv_info->n_solicitations_dropped += is_dropped;
1717  radv_info->n_solicitations_rcvd += is_solicitation;
1718 
1719  if ((error0 == ICMP6_ERROR_NONE) && !is_dropped)
1720  {
1721  radv_info->n_advertisements_sent++;
1722  n_advertisements_sent++;
1723  }
1724  }
1725  }
1726  }
1727 
1728  p0->error = error_node->errors[error0];
1729 
1730  if (error0 != ICMP6_ERROR_NONE)
1731  vlib_error_count (vm, error_node->node_index, error0, 1);
1732 
1733  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
1734  to_next, n_left_to_next,
1735  bi0, next0);
1736 
1737  }
1738 
1739  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1740  }
1741 
1742  /* Account for router advertisements sent. */
1743  vlib_error_count (vm, error_node->node_index,
1744  ICMP6_ERROR_ROUTER_ADVERTISEMENTS_TX,
1745  n_advertisements_sent);
1746 
1747  return frame->n_vectors;
1748 }
1749 
1750  /* validate advertised info for consistancy (see RFC-4861 section 6.2.7) - log any inconsistencies, packet will always be dropped */
1751 static_always_inline uword
1752 icmp6_router_advertisement (vlib_main_t * vm,
1753  vlib_node_runtime_t * node, vlib_frame_t * frame)
1754 {
1755  vnet_main_t *vnm = vnet_get_main ();
1756  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
1757  uword n_packets = frame->n_vectors;
1758  u32 *from, *to_next;
1759  u32 n_left_from, n_left_to_next, next_index;
1760  u32 n_advertisements_rcvd = 0;
1761 
1762  vlib_node_runtime_t *error_node =
1763  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
1764 
1765  from = vlib_frame_vector_args (frame);
1766  n_left_from = n_packets;
1767  next_index = node->cached_next_index;
1768 
1769  if (node->flags & VLIB_NODE_FLAG_TRACE)
1770  vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
1771  /* stride */ 1,
1772  sizeof (icmp6_input_trace_t));
1773 
1774  while (n_left_from > 0)
1775  {
1776  vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1777 
1778  while (n_left_from > 0 && n_left_to_next > 0)
1779  {
1780  vlib_buffer_t *p0;
1781  ip6_header_t *ip0;
1782  ip6_radv_t *radv_info = 0;
1783  icmp6_router_advertisement_header_t *h0;
1784  u32 bi0, options_len0, sw_if_index0, next0, error0;
1785 
1786  bi0 = to_next[0] = from[0];
1787 
1788  from += 1;
1789  to_next += 1;
1790  n_left_from -= 1;
1791  n_left_to_next -= 1;
1792 
1793  p0 = vlib_get_buffer (vm, bi0);
1794  ip0 = vlib_buffer_get_current (p0);
1795  h0 = ip6_next_header (ip0);
1796  options_len0 =
1797  clib_net_to_host_u16 (ip0->payload_length) - sizeof (h0[0]);
1798 
1799  error0 = ICMP6_ERROR_NONE;
1800  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
1801 
1802  /* Check that source address is link-local */
1803  error0 = (!ip6_address_is_link_local_unicast (&ip0->src_address)) ?
1804  ICMP6_ERROR_ROUTER_ADVERTISEMENT_SOURCE_NOT_LINK_LOCAL : error0;
1805 
1806  /* default is to drop */
1807  next0 = ICMP6_ROUTER_SOLICITATION_NEXT_DROP;
1808 
1809  n_advertisements_rcvd++;
1810 
1811  if (error0 == ICMP6_ERROR_NONE)
1812  {
1813  vnet_sw_interface_t *sw_if0;
1814  ethernet_interface_t *eth_if0;
1815 
1816  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
1817  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
1818  eth_if0 =
1819  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
1820 
1821  /* only support ethernet interface type for now */
1822  error0 =
1823  (!eth_if0) ? ICMP6_ERROR_ROUTER_SOLICITATION_UNSUPPORTED_INTF
1824  : error0;
1825 
1826  if (error0 == ICMP6_ERROR_NONE)
1827  {
1828  u32 ri;
1829 
1830  /* look up the radv_t information for this interface */
1831  vec_validate_init_empty
1832  (nm->if_radv_pool_index_by_sw_if_index, sw_if_index0, ~0);
1833 
1834  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index0];
1835 
1836  if (ri != ~0)
1837  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
1838 
1839  error0 =
1840  ((!radv_info) ?
1841  ICMP6_ERROR_ROUTER_SOLICITATION_RADV_NOT_CONFIG :
1842  error0);
1843 
1844  if (error0 == ICMP6_ERROR_NONE)
1845  {
1846  /* validate advertised information */
1847  if ((h0->current_hop_limit && radv_info->curr_hop_limit)
1848  && (h0->current_hop_limit !=
1849  radv_info->curr_hop_limit))
1850  {
1851  ip6_neighbor_syslog (vm, LOG_WARNING,
1852  "our AdvCurHopLimit on %U doesn't agree with %U",
1853  format_vnet_sw_if_index_name,
1854  vnm, sw_if_index0,
1855  format_ip6_address,
1856  &ip0->src_address);
1857  }
1858 
1859  if ((h0->flags &
1860  ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP)
1861  != radv_info->adv_managed_flag)
1862  {
1863  ip6_neighbor_syslog (vm, LOG_WARNING,
1864  "our AdvManagedFlag on %U doesn't agree with %U",
1865  format_vnet_sw_if_index_name,
1866  vnm, sw_if_index0,
1867  format_ip6_address,
1868  &ip0->src_address);
1869  }
1870 
1871  if ((h0->flags &
1872  ICMP6_ROUTER_DISCOVERY_FLAG_OTHER_CONFIG_VIA_DHCP)
1873  != radv_info->adv_other_flag)
1874  {
1875  ip6_neighbor_syslog (vm, LOG_WARNING,
1876  "our AdvOtherConfigFlag on %U doesn't agree with %U",
1877  format_vnet_sw_if_index_name,
1878  vnm, sw_if_index0,
1879  format_ip6_address,
1880  &ip0->src_address);
1881  }
1882 
1883  if ((h0->
1884  time_in_msec_between_retransmitted_neighbor_solicitations
1885  && radv_info->
1886  adv_time_in_msec_between_retransmitted_neighbor_solicitations)
1887  && (h0->
1888  time_in_msec_between_retransmitted_neighbor_solicitations
1889  !=
1890  clib_host_to_net_u32 (radv_info->
1891  adv_time_in_msec_between_retransmitted_neighbor_solicitations)))
1892  {
1893  ip6_neighbor_syslog (vm, LOG_WARNING,
1894  "our AdvRetransTimer on %U doesn't agree with %U",
1895  format_vnet_sw_if_index_name,
1896  vnm, sw_if_index0,
1897  format_ip6_address,
1898  &ip0->src_address);
1899  }
1900 
1901  if ((h0->neighbor_reachable_time_in_msec &&
1902  radv_info->adv_neighbor_reachable_time_in_msec) &&
1903  (h0->neighbor_reachable_time_in_msec !=
1904  clib_host_to_net_u32
1905  (radv_info->adv_neighbor_reachable_time_in_msec)))
1906  {
1907  ip6_neighbor_syslog (vm, LOG_WARNING,
1908  "our AdvReachableTime on %U doesn't agree with %U",
1909  format_vnet_sw_if_index_name,
1910  vnm, sw_if_index0,
1911  format_ip6_address,
1912  &ip0->src_address);
1913  }
1914 
1915  /* check for MTU or prefix options or .. */
1916  u8 *opt_hdr = (u8 *) (h0 + 1);
1917  while (options_len0 > 0)
1918  {
1919  icmp6_neighbor_discovery_option_header_t *o0 =
1920  (icmp6_neighbor_discovery_option_header_t *)
1921  opt_hdr;
1922  int opt_len = o0->n_data_u64s << 3;
1923  icmp6_neighbor_discovery_option_type_t option_type =
1924  o0->type;
1925 
1926  if (options_len0 < 2)
1927  {
1928  ip6_neighbor_syslog (vm, LOG_ERR,
1929  "malformed RA packet on %U from %U",
1930  format_vnet_sw_if_index_name,
1931  vnm, sw_if_index0,
1932  format_ip6_address,
1933  &ip0->src_address);
1934  break;
1935  }
1936 
1937  if (opt_len == 0)
1938  {
1939  ip6_neighbor_syslog (vm, LOG_ERR,
1940  " zero length option in RA on %U from %U",
1941  format_vnet_sw_if_index_name,
1942  vnm, sw_if_index0,
1943  format_ip6_address,
1944  &ip0->src_address);
1945  break;
1946  }
1947  else if (opt_len > options_len0)
1948  {
1949  ip6_neighbor_syslog (vm, LOG_ERR,
1950  "option length in RA packet greater than total length on %U from %U",
1951  format_vnet_sw_if_index_name,
1952  vnm, sw_if_index0,
1953  format_ip6_address,
1954  &ip0->src_address);
1955  break;
1956  }
1957 
1958  options_len0 -= opt_len;
1959  opt_hdr += opt_len;
1960 
1961  switch (option_type)
1962  {
1963  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_mtu:
1964  {
1965  icmp6_neighbor_discovery_mtu_option_t *h =
1966  (icmp6_neighbor_discovery_mtu_option_t
1967  *) (o0);
1968 
1969  if (opt_len < sizeof (*h))
1970  break;
1971 
1972  if ((h->mtu && radv_info->adv_link_mtu) &&
1973  (h->mtu !=
1974  clib_host_to_net_u32
1975  (radv_info->adv_link_mtu)))
1976  {
1977  ip6_neighbor_syslog (vm, LOG_WARNING,
1978  "our AdvLinkMTU on %U doesn't agree with %U",
1979  format_vnet_sw_if_index_name,
1980  vnm, sw_if_index0,
1981  format_ip6_address,
1982  &ip0->src_address);
1983  }
1984  }
1985  break;
1986 
1987  case ICMP6_NEIGHBOR_DISCOVERY_OPTION_prefix_information:
1988  {
1989  icmp6_neighbor_discovery_prefix_information_option_t
1990  * h =
1991  (icmp6_neighbor_discovery_prefix_information_option_t
1992  *) (o0);
1993 
1994  /* validate advertised prefix options */
1995  ip6_radv_prefix_t *pr_info;
1996  u32 preferred, valid;
1997 
1998  if (opt_len < sizeof (*h))
1999  break;
2000 
2001  preferred =
2002  clib_net_to_host_u32 (h->preferred_time);
2003  valid = clib_net_to_host_u32 (h->valid_time);
2004 
2005  /* look for matching prefix - if we our advertising it, it better be consistant */
2006  /* *INDENT-OFF* */
2007  pool_foreach (pr_info, radv_info->adv_prefixes_pool,
2008  ({
2009 
2010  ip6_address_t mask;
2011  ip6_address_mask_from_width(&mask, pr_info->prefix_len);
2012 
2013  if(pr_info->enabled &&
2014  (pr_info->prefix_len == h->dst_address_length) &&
2015  ip6_address_is_equal_masked (&pr_info->prefix, &h->dst_address, &mask))
2016  {
2017  /* found it */
2018  if(!pr_info->decrement_lifetime_flag &&
2019  valid != pr_info->adv_valid_lifetime_in_secs)
2020  {
2021  ip6_neighbor_syslog(vm, LOG_WARNING,
2022  "our ADV validlifetime on %U for %U does not agree with %U",
2023  format_vnet_sw_if_index_name, vnm, sw_if_index0,format_ip6_address, &pr_info->prefix,
2024  format_ip6_address, &h->dst_address);
2025  }
2026  if(!pr_info->decrement_lifetime_flag &&
2027  preferred != pr_info->adv_pref_lifetime_in_secs)
2028  {
2029  ip6_neighbor_syslog(vm, LOG_WARNING,
2030  "our ADV preferredlifetime on %U for %U does not agree with %U",
2031  format_vnet_sw_if_index_name, vnm, sw_if_index0,format_ip6_address, &pr_info->prefix,
2032  format_ip6_address, &h->dst_address);
2033  }
2034  }
2035  break;
2036  }));
2037  /* *INDENT-ON* */
2038  break;
2039  }
2040  default:
2041  /* skip this one */
2042  break;
2043  }
2044  }
2045  }
2046  }
2047  }
2048 
2049  p0->error = error_node->errors[error0];
2050 
2051  if (error0 != ICMP6_ERROR_NONE)
2052  vlib_error_count (vm, error_node->node_index, error0, 1);
2053 
2054  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
2055  to_next, n_left_to_next,
2056  bi0, next0);
2057  }
2058 
2059  vlib_put_next_frame (vm, node, next_index, n_left_to_next);
2060  }
2061 
2062  /* Account for router advertisements sent. */
2063  vlib_error_count (vm, error_node->node_index,
2064  ICMP6_ERROR_ROUTER_ADVERTISEMENTS_RX,
2065  n_advertisements_rcvd);
2066 
2067  return frame->n_vectors;
2068 }
2069 
2070 /**
2071  * @brief Add a multicast Address to the advertised MLD set
2072  */
2073 static void
2074 ip6_neighbor_add_mld_prefix (ip6_radv_t * radv_info, ip6_address_t * addr)
2075 {
2076  ip6_mldp_group_t *mcast_group_info;
2077  uword *p;
2078 
2079  /* lookup mldp info for this interface */
2080  p = mhash_get (&radv_info->address_to_mldp_index, &addr);
2081  mcast_group_info =
2082  p ? pool_elt_at_index (radv_info->mldp_group_pool, p[0]) : 0;
2083 
2084  /* add address */
2085  if (!mcast_group_info)
2086  {
2087  /* add */
2088  u32 mi;
2089  pool_get (radv_info->mldp_group_pool, mcast_group_info);
2090 
2091  mi = mcast_group_info - radv_info->mldp_group_pool;
2092  mhash_set (&radv_info->address_to_mldp_index, &addr, mi, /* old_value */
2093  0);
2094 
2095  mcast_group_info->type = 4;
2096  mcast_group_info->mcast_source_address_pool = 0;
2097  mcast_group_info->num_sources = 0;
2098  clib_memcpy (&mcast_group_info->mcast_address, &addr,
2099  sizeof (ip6_address_t));
2100  }
2101 }
2102 
2103 /**
2104  * @brief Delete a multicast Address from the advertised MLD set
2105  */
2106 static void
2107 ip6_neighbor_del_mld_prefix (ip6_radv_t * radv_info, ip6_address_t * addr)
2108 {
2109  ip6_mldp_group_t *mcast_group_info;
2110  uword *p;
2111 
2112  p = mhash_get (&radv_info->address_to_mldp_index, &addr);
2113  mcast_group_info =
2114  p ? pool_elt_at_index (radv_info->mldp_group_pool, p[0]) : 0;
2115 
2116  if (mcast_group_info)
2117  {
2118  mhash_unset (&radv_info->address_to_mldp_index, &addr,
2119  /* old_value */ 0);
2120  pool_put (radv_info->mldp_group_pool, mcast_group_info);
2121  }
2122 }
2123 
2124 /**
2125  * @brief Add a multicast Address to the advertised MLD set
2126  */
2127 static void
2128 ip6_neighbor_add_mld_grp (ip6_radv_t * a,
2129  ip6_multicast_address_scope_t scope,
2130  ip6_multicast_link_local_group_id_t group)
2131 {
2132  ip6_address_t addr;
2133 
2134  ip6_set_reserved_multicast_address (&addr, scope, group);
2135 
2136  ip6_neighbor_add_mld_prefix (a, &addr);
2137 }
2138 
2139 /**
2140  * @brief create and initialize router advertisement parameters with default
2141  * values for this intfc
2142  */
2143 u32
2144 ip6_neighbor_sw_interface_add_del (vnet_main_t * vnm,
2145  u32 sw_if_index, u32 is_add)
2146 {
2147  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2148  ip6_radv_t *a = 0;
2149  u32 ri = ~0;
2150  vnet_sw_interface_t *sw_if0;
2151  ethernet_interface_t *eth_if0 = 0;
2152 
2153  /* lookup radv container - ethernet interfaces only */
2154  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
2155  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
2156  eth_if0 = ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
2157 
2158  if (!eth_if0)
2159  return ri;
2160 
2161  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2162  ~0);
2163  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2164 
2165  if (ri != ~0)
2166  {
2167  a = pool_elt_at_index (nm->if_radv_pool, ri);
2168 
2169  if (!is_add)
2170  {
2171  ip6_radv_prefix_t *p;
2172  ip6_mldp_group_t *m;
2173 
2174  /* release the lock on the interface's mcast adj */
2175  adj_unlock (a->mcast_adj_index);
2176 
2177  /* clean up prefix and MDP pools */
2178  /* *INDENT-OFF* */
2179  pool_flush(p, a->adv_prefixes_pool,
2180  ({
2181  mhash_unset (&a->address_to_prefix_index, &p->prefix, 0);
2182  }));
2183  pool_flush (m, a->mldp_group_pool,
2184  ({
2185  mhash_unset (&a->address_to_mldp_index, &m->mcast_address, 0);
2186  }));
2187  /* *INDENT-ON* */
2188 
2189  pool_free (a->mldp_group_pool);
2190  pool_free (a->adv_prefixes_pool);
2191 
2192  mhash_free (&a->address_to_prefix_index);
2193  mhash_free (&a->address_to_mldp_index);
2194 
2195  pool_put (nm->if_radv_pool, a);
2196  nm->if_radv_pool_index_by_sw_if_index[sw_if_index] = ~0;
2197  ri = ~0;
2198  }
2199  }
2200  else
2201  {
2202  if (is_add)
2203  {
2204  vnet_hw_interface_t *hw_if0;
2205 
2206  hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index);
2207 
2208  pool_get (nm->if_radv_pool, a);
2209 
2210  ri = a - nm->if_radv_pool;
2211  nm->if_radv_pool_index_by_sw_if_index[sw_if_index] = ri;
2212 
2213  /* initialize default values (most of which are zero) */
2214  memset (a, 0, sizeof (a[0]));
2215 
2216  a->sw_if_index = sw_if_index;
2217  a->max_radv_interval = DEF_MAX_RADV_INTERVAL;
2218  a->min_radv_interval = DEF_MIN_RADV_INTERVAL;
2219  a->curr_hop_limit = DEF_CURR_HOP_LIMIT;
2220  a->adv_router_lifetime_in_sec = DEF_DEF_RTR_LIFETIME;
2221 
2222  /* send ll address source address option */
2223  a->adv_link_layer_address = 1;
2224 
2225  a->min_delay_between_radv = MIN_DELAY_BETWEEN_RAS;
2226  a->max_delay_between_radv = MAX_DELAY_BETWEEN_RAS;
2227  a->max_rtr_default_lifetime = MAX_DEF_RTR_LIFETIME;
2228  a->seed = (u32) clib_cpu_time_now ();
2229  (void) random_u32 (&a->seed);
2230  a->randomizer = clib_cpu_time_now ();
2231  (void) random_u64 (&a->randomizer);
2232 
2233  a->initial_adverts_count = MAX_INITIAL_RTR_ADVERTISEMENTS;
2234  a->initial_adverts_sent = a->initial_adverts_count - 1;
2235  a->initial_adverts_interval = MAX_INITIAL_RTR_ADVERT_INTERVAL;
2236 
2237  /* deafult is to send */
2238  a->send_radv = 1;
2239 
2240  /* fill in radv_info for this interface that will be needed later */
2241  a->adv_link_mtu = hw_if0->max_l3_packet_bytes[VLIB_RX];
2242 
2243  clib_memcpy (a->link_layer_address, eth_if0->address, 6);
2244 
2245  /* fill in default link-local address (this may be overridden) */
2246  ip6_link_local_address_from_ethernet_address
2247  (&a->link_local_address, eth_if0->address);
2248 
2249  mhash_init (&a->address_to_prefix_index, sizeof (uword),
2250  sizeof (ip6_address_t));
2251  mhash_init (&a->address_to_mldp_index, sizeof (uword),
2252  sizeof (ip6_address_t));
2253 
2254  a->mcast_adj_index = adj_mcast_add_or_lock (FIB_PROTOCOL_IP6,
2255  VNET_LINK_IP6,
2256  sw_if_index);
2257 
2258  /* add multicast groups we will always be reporting */
2259  ip6_neighbor_add_mld_grp (a,
2260  IP6_MULTICAST_SCOPE_link_local,
2261  IP6_MULTICAST_GROUP_ID_all_hosts);
2262  ip6_neighbor_add_mld_grp (a,
2263  IP6_MULTICAST_SCOPE_link_local,
2264  IP6_MULTICAST_GROUP_ID_all_routers);
2265  ip6_neighbor_add_mld_grp (a,
2266  IP6_MULTICAST_SCOPE_link_local,
2267  IP6_MULTICAST_GROUP_ID_mldv2_routers);
2268  }
2269  }
2270  return ri;
2271 }
2272 
2273 /* send an mldpv2 report */
2274 static void
2275 ip6_neighbor_send_mldpv2_report (u32 sw_if_index)
2276 {
2277  vnet_main_t *vnm = vnet_get_main ();
2278  vlib_main_t *vm = vnm->vlib_main;
2279  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2280  vnet_sw_interface_t *sw_if0;
2281  ethernet_interface_t *eth_if0;
2282  u32 ri;
2283  int bogus_length;
2284 
2285  ip6_radv_t *radv_info;
2286  u16 payload_length;
2287  vlib_buffer_t *b0;
2288  ip6_header_t *ip0;
2289  u32 *to_next;
2290  vlib_frame_t *f;
2291  u32 bo0;
2292  u32 n_to_alloc = 1;
2293  u32 n_allocated;
2294 
2295  icmp6_multicast_listener_report_header_t *rh0;
2296  icmp6_multicast_listener_report_packet_t *rp0;
2297 
2298  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
2299  ASSERT (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE);
2300  eth_if0 = ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
2301 
2302  if (!eth_if0 || !vnet_sw_interface_is_admin_up (vnm, sw_if_index))
2303  return;
2304 
2305  /* look up the radv_t information for this interface */
2306  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2307  ~0);
2308 
2309  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2310 
2311  if (ri == ~0)
2312  return;
2313 
2314  /* send report now - build a mldpv2 report packet */
2315  n_allocated = vlib_buffer_alloc_from_free_list (vm,
2316  &bo0,
2317  n_to_alloc,
2318  VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
2319  if (PREDICT_FALSE (n_allocated == 0))
2320  {
2321  clib_warning ("buffer allocation failure");
2322  return;
2323  }
2324 
2325  b0 = vlib_get_buffer (vm, bo0);
2326 
2327  /* adjust the sizeof the buffer to just include the ipv6 header */
2328  b0->current_length = sizeof (icmp6_multicast_listener_report_packet_t);
2329 
2330  payload_length = sizeof (icmp6_multicast_listener_report_header_t);
2331 
2332  b0->error = ICMP6_ERROR_NONE;
2333 
2334  rp0 = vlib_buffer_get_current (b0);
2335  ip0 = (ip6_header_t *) & rp0->ip;
2336  rh0 = (icmp6_multicast_listener_report_header_t *) & rp0->report_hdr;
2337 
2338  memset (rp0, 0x0, sizeof (icmp6_multicast_listener_report_packet_t));
2339 
2340  ip0->ip_version_traffic_class_and_flow_label =
2341  clib_host_to_net_u32 (0x6 << 28);
2342 
2343  ip0->protocol = IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS;
2344  /* for DEBUG - vnet driver won't seem to emit router alerts */
2345  /* ip0->protocol = IP_PROTOCOL_ICMP6; */
2346  ip0->hop_limit = 1;
2347 
2348  rh0->icmp.type = ICMP6_multicast_listener_report_v2;
2349 
2350  /* source address MUST be the link-local address */
2351  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
2352  ip0->src_address = radv_info->link_local_address;
2353 
2354  /* destination is all mldpv2 routers */
2355  ip6_set_reserved_multicast_address (&ip0->dst_address,
2356  IP6_MULTICAST_SCOPE_link_local,
2357  IP6_MULTICAST_GROUP_ID_mldv2_routers);
2358 
2359  /* add reports here */
2360  ip6_mldp_group_t *m;
2361  int num_addr_records = 0;
2362  icmp6_multicast_address_record_t rr;
2363 
2364  /* fill in the hop-by-hop extension header (router alert) info */
2365  rh0->ext_hdr.next_hdr = IP_PROTOCOL_ICMP6;
2366  rh0->ext_hdr.n_data_u64s = 0;
2367 
2368  rh0->alert.type = IP6_MLDP_ALERT_TYPE;
2369  rh0->alert.len = 2;
2370  rh0->alert.value = 0;
2371 
2372  rh0->pad.type = 1;
2373  rh0->pad.len = 0;
2374 
2375  rh0->icmp.checksum = 0;
2376 
2377  /* *INDENT-OFF* */
2378  pool_foreach (m, radv_info->mldp_group_pool,
2379  ({
2380  rr.type = m->type;
2381  rr.aux_data_len_u32s = 0;
2382  rr.num_sources = clib_host_to_net_u16 (m->num_sources);
2383  clib_memcpy(&rr.mcast_addr, &m->mcast_address, sizeof(ip6_address_t));
2384 
2385  num_addr_records++;
2386 
2387  vlib_buffer_add_data
2388  (vm, vlib_buffer_get_free_list_index (b0), bo0,
2389  (void *)&rr, sizeof(icmp6_multicast_address_record_t));
2390 
2391  payload_length += sizeof( icmp6_multicast_address_record_t);
2392  }));
2393  /* *INDENT-ON* */
2394 
2395  rh0->rsvd = 0;
2396  rh0->num_addr_records = clib_host_to_net_u16 (num_addr_records);
2397 
2398  /* update lengths */
2399  ip0->payload_length = clib_host_to_net_u16 (payload_length);
2400 
2401  rh0->icmp.checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
2402  &bogus_length);
2403  ASSERT (bogus_length == 0);
2404 
2405  /*
2406  * OK to override w/ no regard for actual FIB, because
2407  * ip6-rewrite only looks at the adjacency.
2408  */
2409  vnet_buffer (b0)->sw_if_index[VLIB_RX] =
2410  vnet_main.local_interface_sw_if_index;
2411 
2412  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = radv_info->mcast_adj_index;
2413  b0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
2414 
2415  vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "ip6-rewrite-mcast");
2416 
2417  f = vlib_get_frame_to_node (vm, node->index);
2418  to_next = vlib_frame_vector_args (f);
2419  to_next[0] = bo0;
2420  f->n_vectors = 1;
2421 
2422  vlib_put_frame_to_node (vm, node->index, f);
2423  return;
2424 }
2425 
2426 /* *INDENT-OFF* */
2427 VLIB_REGISTER_NODE (ip6_icmp_router_solicitation_node,static) =
2428 {
2429  .function = icmp6_router_solicitation,
2430  .name = "icmp6-router-solicitation",
2431 
2432  .vector_size = sizeof (u32),
2433 
2434  .format_trace = format_icmp6_input_trace,
2435 
2436  .n_next_nodes = ICMP6_ROUTER_SOLICITATION_N_NEXT,
2437  .next_nodes = {
2438  [ICMP6_ROUTER_SOLICITATION_NEXT_DROP] = "ip6-drop",
2439  [ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW] = "ip6-rewrite-mcast",
2440  [ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX] = "interface-output",
2441  },
2442 };
2443 /* *INDENT-ON* */
2444 
2445 /* send a RA or update the timer info etc.. */
2446 static uword
2447 ip6_neighbor_process_timer_event (vlib_main_t * vm,
2448  vlib_node_runtime_t * node,
2449  vlib_frame_t * frame)
2450 {
2451  vnet_main_t *vnm = vnet_get_main ();
2452  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2453  ip6_radv_t *radv_info;
2454  vlib_frame_t *f = 0;
2455  u32 n_this_frame = 0;
2456  u32 n_left_to_next = 0;
2457  u32 *to_next = 0;
2458  u32 bo0;
2459  icmp6_router_solicitation_header_t *h0;
2460  vlib_buffer_t *b0;
2461  f64 now = vlib_time_now (vm);
2462 
2463  /* Interface ip6 radv info list */
2464  /* *INDENT-OFF* */
2465  pool_foreach (radv_info, nm->if_radv_pool,
2466  ({
2467  if( !vnet_sw_interface_is_admin_up (vnm, radv_info->sw_if_index))
2468  {
2469  radv_info->initial_adverts_sent = radv_info->initial_adverts_count-1;
2470  radv_info->next_multicast_time = now;
2471  radv_info->last_multicast_time = now;
2472  radv_info->last_radv_time = 0;
2473  radv_info->all_routers_mcast = 0;
2474  continue;
2475  }
2476 
2477  /* Make sure that we've joined the all-routers multicast group */
2478  if(!radv_info->all_routers_mcast)
2479  {
2480  /* send MDLP_REPORT_EVENT message */
2481  ip6_neighbor_send_mldpv2_report(radv_info->sw_if_index);
2482  radv_info->all_routers_mcast = 1;
2483  }
2484 
2485  /* is it time to send a multicast RA on this interface? */
2486  if(radv_info->send_radv && (now >= radv_info->next_multicast_time))
2487  {
2488  u32 n_to_alloc = 1;
2489  u32 n_allocated;
2490 
2491  f64 rfn = (radv_info->max_radv_interval - radv_info->min_radv_interval) *
2492  random_f64 (&radv_info->seed) + radv_info->min_radv_interval;
2493 
2494  /* multicast send - compute next multicast send time */
2495  if( radv_info->initial_adverts_sent > 0)
2496  {
2497  radv_info->initial_adverts_sent--;
2498  if(rfn > radv_info-> initial_adverts_interval)
2499  rfn = radv_info-> initial_adverts_interval;
2500 
2501  /* check to see if we are ceasing to send */
2502  if( radv_info->initial_adverts_sent == 0)
2503  if(radv_info->cease_radv)
2504  radv_info->send_radv = 0;
2505  }
2506 
2507  radv_info->next_multicast_time = rfn + now;
2508  radv_info->last_multicast_time = now;
2509 
2510  /* send advert now - build a "solicted" router advert with unspecified source address */
2511  n_allocated = vlib_buffer_alloc_from_free_list
2512  (vm, &bo0, n_to_alloc, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
2513 
2514  if (PREDICT_FALSE(n_allocated == 0))
2515  {
2516  clib_warning ("buffer allocation failure");
2517  continue;
2518  }
2519  b0 = vlib_get_buffer (vm, bo0);
2520  b0->current_length = sizeof( icmp6_router_solicitation_header_t);
2521  b0->error = ICMP6_ERROR_NONE;
2522  vnet_buffer (b0)->sw_if_index[VLIB_RX] = radv_info->sw_if_index;
2523 
2524  h0 = vlib_buffer_get_current (b0);
2525 
2526  memset (h0, 0, sizeof (icmp6_router_solicitation_header_t));
2527 
2528  h0->ip.ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (0x6 << 28);
2529  h0->ip.payload_length = clib_host_to_net_u16 (sizeof (icmp6_router_solicitation_header_t)
2530  - STRUCT_OFFSET_OF (icmp6_router_solicitation_header_t, neighbor));
2531  h0->ip.protocol = IP_PROTOCOL_ICMP6;
2532  h0->ip.hop_limit = 255;
2533 
2534  /* set src/dst address as "unspecified" this marks this packet as internally generated rather than recieved */
2535  h0->ip.src_address.as_u64[0] = 0;
2536  h0->ip.src_address.as_u64[1] = 0;
2537 
2538  h0->ip.dst_address.as_u64[0] = 0;
2539  h0->ip.dst_address.as_u64[1] = 0;
2540 
2541  h0->neighbor.icmp.type = ICMP6_router_solicitation;
2542 
2543  if (PREDICT_FALSE(f == 0))
2544  {
2545  f = vlib_get_frame_to_node (vm, ip6_icmp_router_solicitation_node.index);
2546  to_next = vlib_frame_vector_args (f);
2547  n_left_to_next = VLIB_FRAME_SIZE;
2548  n_this_frame = 0;
2549  }
2550 
2551  n_this_frame++;
2552  n_left_to_next--;
2553  to_next[0] = bo0;
2554  to_next += 1;
2555 
2556  if (PREDICT_FALSE(n_left_to_next == 0))
2557  {
2558  f->n_vectors = n_this_frame;
2559  vlib_put_frame_to_node (vm, ip6_icmp_router_solicitation_node.index, f);
2560  f = 0;
2561  }
2562  }
2563  }));
2564  /* *INDENT-ON* */
2565 
2566  if (f)
2567  {
2568  ASSERT (n_this_frame);
2569  f->n_vectors = n_this_frame;
2570  vlib_put_frame_to_node (vm, ip6_icmp_router_solicitation_node.index, f);
2571  }
2572  return 0;
2573 }
2574 
2575 static uword
2576 ip6_icmp_neighbor_discovery_event_process (vlib_main_t * vm,
2577  vlib_node_runtime_t * node,
2578  vlib_frame_t * frame)
2579 {
2580  uword event_type;
2581  ip6_icmp_neighbor_discovery_event_data_t *event_data;
2582 
2583  /* init code here */
2584 
2585  while (1)
2586  {
2587  vlib_process_wait_for_event_or_clock (vm, 1. /* seconds */ );
2588 
2589  event_data = vlib_process_get_event_data (vm, &event_type);
2590 
2591  if (!event_data)
2592  {
2593  /* No events found: timer expired. */
2594  /* process interface list and send RAs as appropriate, update timer info */
2595  ip6_neighbor_process_timer_event (vm, node, frame);
2596  }
2597  else
2598  {
2599  switch (event_type)
2600  {
2601 
2602  case ICMP6_ND_EVENT_INIT:
2603  break;
2604 
2605  case ~0:
2606  break;
2607 
2608  default:
2609  ASSERT (0);
2610  }
2611 
2612  if (event_data)
2613  _vec_len (event_data) = 0;
2614  }
2615  }
2616  return frame->n_vectors;
2617 }
2618 
2619 /* *INDENT-OFF* */
2620 VLIB_REGISTER_NODE (ip6_icmp_router_advertisement_node,static) =
2621 {
2622  .function = icmp6_router_advertisement,
2623  .name = "icmp6-router-advertisement",
2624 
2625  .vector_size = sizeof (u32),
2626 
2627  .format_trace = format_icmp6_input_trace,
2628 
2629  .n_next_nodes = 1,
2630  .next_nodes = {
2631  [0] = "ip6-drop",
2632  },
2633 };
2634 /* *INDENT-ON* */
2635 
2636 vlib_node_registration_t ip6_icmp_neighbor_discovery_event_node = {
2637 
2638  .function = ip6_icmp_neighbor_discovery_event_process,
2639  .name = "ip6-icmp-neighbor-discovery-event-process",
2640  .type = VLIB_NODE_TYPE_PROCESS,
2641 };
2642 
2643 static uword
2644 icmp6_neighbor_solicitation (vlib_main_t * vm,
2645  vlib_node_runtime_t * node, vlib_frame_t * frame)
2646 {
2647  return icmp6_neighbor_solicitation_or_advertisement (vm, node, frame,
2648  /* is_solicitation */
2649  1);
2650 }
2651 
2652 static uword
2653 icmp6_neighbor_advertisement (vlib_main_t * vm,
2654  vlib_node_runtime_t * node,
2655  vlib_frame_t * frame)
2656 {
2657  return icmp6_neighbor_solicitation_or_advertisement (vm, node, frame,
2658  /* is_solicitation */
2659  0);
2660 }
2661 
2662 /* *INDENT-OFF* */
2663 VLIB_REGISTER_NODE (ip6_icmp_neighbor_solicitation_node,static) =
2664 {
2665  .function = icmp6_neighbor_solicitation,
2666  .name = "icmp6-neighbor-solicitation",
2667 
2668  .vector_size = sizeof (u32),
2669 
2670  .format_trace = format_icmp6_input_trace,
2671 
2672  .n_next_nodes = ICMP6_NEIGHBOR_SOLICITATION_N_NEXT,
2673  .next_nodes = {
2674  [ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP] = "ip6-drop",
2675  [ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY] = "interface-output",
2676  },
2677 };
2678 /* *INDENT-ON* */
2679 
2680 /* *INDENT-OFF* */
2681 VLIB_REGISTER_NODE (ip6_icmp_neighbor_advertisement_node,static) =
2682 {
2683  .function = icmp6_neighbor_advertisement,
2684  .name = "icmp6-neighbor-advertisement",
2685 
2686  .vector_size = sizeof (u32),
2687 
2688  .format_trace = format_icmp6_input_trace,
2689 
2690  .n_next_nodes = 1,
2691  .next_nodes = {
2692  [0] = "ip6-drop",
2693  },
2694 };
2695 /* *INDENT-ON* */
2696 
2697 /* API support functions */
2698 int
2699 ip6_neighbor_ra_config (vlib_main_t * vm, u32 sw_if_index,
2700  u8 suppress, u8 managed, u8 other,
2701  u8 ll_option, u8 send_unicast, u8 cease,
2702  u8 use_lifetime, u32 lifetime,
2703  u32 initial_count, u32 initial_interval,
2704  u32 max_interval, u32 min_interval, u8 is_no)
2705 {
2706  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2707  int error;
2708  u32 ri;
2709 
2710  /* look up the radv_t information for this interface */
2711  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2712  ~0);
2713  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2714  error = (ri != ~0) ? 0 : VNET_API_ERROR_INVALID_SW_IF_INDEX;
2715 
2716  if (!error)
2717  {
2718 
2719  ip6_radv_t *radv_info;
2720  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
2721 
2722  if ((max_interval != 0) && (min_interval == 0))
2723  min_interval = .75 * max_interval;
2724 
2725  max_interval =
2726  (max_interval !=
2727  0) ? ((is_no) ? DEF_MAX_RADV_INTERVAL : max_interval) :
2728  radv_info->max_radv_interval;
2729  min_interval =
2730  (min_interval !=
2731  0) ? ((is_no) ? DEF_MIN_RADV_INTERVAL : min_interval) :
2732  radv_info->min_radv_interval;
2733  lifetime =
2734  (use_lifetime !=
2735  0) ? ((is_no) ? DEF_DEF_RTR_LIFETIME : lifetime) :
2736  radv_info->adv_router_lifetime_in_sec;
2737 
2738  if (lifetime)
2739  {
2740  if (lifetime > MAX_DEF_RTR_LIFETIME)
2741  lifetime = MAX_DEF_RTR_LIFETIME;
2742 
2743  if (lifetime <= max_interval)
2744  return VNET_API_ERROR_INVALID_VALUE;
2745  }
2746 
2747  if (min_interval != 0)
2748  {
2749  if ((min_interval > .75 * max_interval) || (min_interval < 3))
2750  return VNET_API_ERROR_INVALID_VALUE;
2751  }
2752 
2753  if ((initial_count > MAX_INITIAL_RTR_ADVERTISEMENTS) ||
2754  (initial_interval > MAX_INITIAL_RTR_ADVERT_INTERVAL))
2755  return VNET_API_ERROR_INVALID_VALUE;
2756 
2757  /*
2758  if "flag" is set and is_no is true then restore default value else set value corresponding to "flag"
2759  if "flag" is clear don't change corresponding value
2760  */
2761  radv_info->send_radv =
2762  (suppress != 0) ? ((is_no != 0) ? 1 : 0) : radv_info->send_radv;
2763  radv_info->adv_managed_flag =
2764  (managed != 0) ? ((is_no) ? 0 : 1) : radv_info->adv_managed_flag;
2765  radv_info->adv_other_flag =
2766  (other != 0) ? ((is_no) ? 0 : 1) : radv_info->adv_other_flag;
2767  radv_info->adv_link_layer_address =
2768  (ll_option !=
2769  0) ? ((is_no) ? 1 : 0) : radv_info->adv_link_layer_address;
2770  radv_info->send_unicast =
2771  (send_unicast != 0) ? ((is_no) ? 0 : 1) : radv_info->send_unicast;
2772  radv_info->cease_radv =
2773  (cease != 0) ? ((is_no) ? 0 : 1) : radv_info->cease_radv;
2774 
2775  radv_info->min_radv_interval = min_interval;
2776  radv_info->max_radv_interval = max_interval;
2777  radv_info->adv_router_lifetime_in_sec = lifetime;
2778 
2779  radv_info->initial_adverts_count =
2780  (initial_count !=
2781  0) ? ((is_no) ? MAX_INITIAL_RTR_ADVERTISEMENTS : initial_count) :
2782  radv_info->initial_adverts_count;
2783  radv_info->initial_adverts_interval =
2784  (initial_interval !=
2785  0) ? ((is_no) ? MAX_INITIAL_RTR_ADVERT_INTERVAL : initial_interval) :
2786  radv_info->initial_adverts_interval;
2787 
2788  /* restart */
2789  if ((cease != 0) && (is_no))
2790  radv_info->send_radv = 1;
2791 
2792  radv_info->initial_adverts_sent = radv_info->initial_adverts_count - 1;
2793  radv_info->next_multicast_time = vlib_time_now (vm);
2794  radv_info->last_multicast_time = vlib_time_now (vm);
2795  radv_info->last_radv_time = 0;
2796  }
2797  return (error);
2798 }
2799 
2800 int
2801 ip6_neighbor_ra_prefix (vlib_main_t * vm, u32 sw_if_index,
2802  ip6_address_t * prefix_addr, u8 prefix_len,
2803  u8 use_default, u32 val_lifetime, u32 pref_lifetime,
2804  u8 no_advertise, u8 off_link, u8 no_autoconfig,
2805  u8 no_onlink, u8 is_no)
2806 {
2807  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2808  int error;
2809 
2810  u32 ri;
2811 
2812  /* look up the radv_t information for this interface */
2813  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
2814  ~0);
2815 
2816  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2817 
2818  error = (ri != ~0) ? 0 : VNET_API_ERROR_INVALID_SW_IF_INDEX;
2819 
2820  if (!error)
2821  {
2822  f64 now = vlib_time_now (vm);
2823  ip6_radv_t *radv_info;
2824  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
2825 
2826  /* prefix info add, delete or update */
2827  ip6_radv_prefix_t *prefix;
2828 
2829  /* lookup prefix info for this address on this interface */
2830  uword *p = mhash_get (&radv_info->address_to_prefix_index, prefix_addr);
2831 
2832  prefix = p ? pool_elt_at_index (radv_info->adv_prefixes_pool, p[0]) : 0;
2833 
2834  if (is_no)
2835  {
2836  /* delete */
2837  if (!prefix)
2838  return VNET_API_ERROR_INVALID_VALUE; /* invalid prefix */
2839 
2840  if (prefix->prefix_len != prefix_len)
2841  return VNET_API_ERROR_INVALID_VALUE_2;
2842 
2843  /* FIXME - Should the DP do this or the CP ? */
2844  /* do specific delete processing here before returning */
2845  /* try to remove from routing table */
2846 
2847  mhash_unset (&radv_info->address_to_prefix_index, prefix_addr,
2848  /* old_value */ 0);
2849  pool_put (radv_info->adv_prefixes_pool, prefix);
2850 
2851  radv_info->initial_adverts_sent =
2852  radv_info->initial_adverts_count - 1;
2853  radv_info->next_multicast_time = vlib_time_now (vm);
2854  radv_info->last_multicast_time = vlib_time_now (vm);
2855  radv_info->last_radv_time = 0;
2856  return (error);
2857  }
2858 
2859  /* adding or changing */
2860  if (!prefix)
2861  {
2862  /* add */
2863  u32 pi;
2864  pool_get (radv_info->adv_prefixes_pool, prefix);
2865  pi = prefix - radv_info->adv_prefixes_pool;
2866  mhash_set (&radv_info->address_to_prefix_index, prefix_addr, pi,
2867  /* old_value */ 0);
2868 
2869  memset (prefix, 0x0, sizeof (ip6_radv_prefix_t));
2870 
2871  prefix->prefix_len = prefix_len;
2872  clib_memcpy (&prefix->prefix, prefix_addr, sizeof (ip6_address_t));
2873 
2874  /* initialize default values */
2875  prefix->adv_on_link_flag = 1; /* L bit set */
2876  prefix->adv_autonomous_flag = 1; /* A bit set */
2877  prefix->adv_valid_lifetime_in_secs = DEF_ADV_VALID_LIFETIME;
2878  prefix->adv_pref_lifetime_in_secs = DEF_ADV_PREF_LIFETIME;
2879  prefix->enabled = 1;
2880  prefix->decrement_lifetime_flag = 1;
2881  prefix->deprecated_prefix_flag = 1;
2882 
2883  if (off_link == 0)
2884  {
2885  /* FIXME - Should the DP do this or the CP ? */
2886  /* insert prefix into routing table as a connected prefix */
2887  }
2888 
2889  if (use_default)
2890  goto restart;
2891  }
2892  else
2893  {
2894 
2895  if (prefix->prefix_len != prefix_len)
2896  return VNET_API_ERROR_INVALID_VALUE_2;
2897 
2898  if (off_link != 0)
2899  {
2900  /* FIXME - Should the DP do this or the CP ? */
2901  /* remove from routing table if already there */
2902  }
2903  }
2904 
2905  if ((val_lifetime == ~0) || (pref_lifetime == ~0))
2906  {
2907  prefix->adv_valid_lifetime_in_secs = ~0;
2908  prefix->adv_pref_lifetime_in_secs = ~0;
2909  prefix->decrement_lifetime_flag = 0;
2910  }
2911  else
2912  {
2913  prefix->adv_valid_lifetime_in_secs = val_lifetime;;
2914  prefix->adv_pref_lifetime_in_secs = pref_lifetime;
2915  }
2916 
2917  /* copy remaining */
2918  prefix->enabled = !(no_advertise != 0);
2919  prefix->adv_on_link_flag = !((off_link != 0) || (no_onlink != 0));
2920  prefix->adv_autonomous_flag = !(no_autoconfig != 0);
2921 
2922  restart:
2923  /* restart */
2924  /* fill in the expiration times */
2925  prefix->valid_lifetime_expires =
2926  now + prefix->adv_valid_lifetime_in_secs;
2927  prefix->pref_lifetime_expires = now + prefix->adv_pref_lifetime_in_secs;
2928 
2929  radv_info->initial_adverts_sent = radv_info->initial_adverts_count - 1;
2930  radv_info->next_multicast_time = vlib_time_now (vm);
2931  radv_info->last_multicast_time = vlib_time_now (vm);
2932  radv_info->last_radv_time = 0;
2933  }
2934  return (error);
2935 }
2936 
2937 clib_error_t *
2938 ip6_neighbor_cmd (vlib_main_t * vm, unformat_input_t * main_input,
2939  vlib_cli_command_t * cmd)
2940 {
2941  vnet_main_t *vnm = vnet_get_main ();
2942  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
2943  clib_error_t *error = 0;
2944  u8 is_no = 0;
2945  u8 suppress = 0, managed = 0, other = 0;
2946  u8 suppress_ll_option = 0, send_unicast = 0, cease = 0;
2947  u8 use_lifetime = 0;
2948  u32 sw_if_index, ra_lifetime = 0, ra_initial_count =
2949  0, ra_initial_interval = 0;
2950  u32 ra_max_interval = 0, ra_min_interval = 0;
2951 
2952  unformat_input_t _line_input, *line_input = &_line_input;
2953  vnet_sw_interface_t *sw_if0;
2954 
2955  int add_radv_info = 1;
2956  __attribute__ ((unused)) ip6_radv_t *radv_info = 0;
2957  ip6_address_t ip6_addr;
2958  u32 addr_len;
2959 
2960 
2961  /* Get a line of input. */
2962  if (!unformat_user (main_input, unformat_line_input, line_input))
2963  return 0;
2964 
2965  /* get basic radv info for this interface */
2966  if (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
2967  {
2968 
2969  if (unformat_user (line_input,
2970  unformat_vnet_sw_interface, vnm, &sw_if_index))
2971  {
2972  u32 ri;
2973  ethernet_interface_t *eth_if0 = 0;
2974 
2975  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
2976  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
2977  eth_if0 =
2978  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
2979 
2980  if (!eth_if0)
2981  {
2982  error =
2983  clib_error_return (0, "Interface must be of ethernet type");
2984  goto done;
2985  }
2986 
2987  /* look up the radv_t information for this interface */
2988  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
2989  sw_if_index, ~0);
2990 
2991  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
2992 
2993  if (ri != ~0)
2994  {
2995  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
2996  }
2997  else
2998  {
2999  error = clib_error_return (0, "unknown interface %U'",
3000  format_unformat_error, line_input);
3001  goto done;
3002  }
3003  }
3004  else
3005  {
3006  error = clib_error_return (0, "invalid interface name %U'",
3007  format_unformat_error, line_input);
3008  goto done;
3009  }
3010  }
3011 
3012  /* get the rest of the command */
3013  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3014  {
3015  if (unformat (line_input, "no"))
3016  is_no = 1;
3017  else if (unformat (line_input, "prefix %U/%d",
3018  unformat_ip6_address, &ip6_addr, &addr_len))
3019  {
3020  add_radv_info = 0;
3021  break;
3022  }
3023  else if (unformat (line_input, "ra-managed-config-flag"))
3024  {
3025  managed = 1;
3026  break;
3027  }
3028  else if (unformat (line_input, "ra-other-config-flag"))
3029  {
3030  other = 1;
3031  break;
3032  }
3033  else if (unformat (line_input, "ra-suppress") ||
3034  unformat (line_input, "ra-surpress"))
3035  {
3036  suppress = 1;
3037  break;
3038  }
3039  else if (unformat (line_input, "ra-suppress-link-layer") ||
3040  unformat (line_input, "ra-surpress-link-layer"))
3041  {
3042  suppress_ll_option = 1;
3043  break;
3044  }
3045  else if (unformat (line_input, "ra-send-unicast"))
3046  {
3047  send_unicast = 1;
3048  break;
3049  }
3050  else if (unformat (line_input, "ra-lifetime"))
3051  {
3052  if (!unformat (line_input, "%d", &ra_lifetime))
3053  {
3054  error = unformat_parse_error (line_input);
3055  goto done;
3056  }
3057  use_lifetime = 1;
3058  break;
3059  }
3060  else if (unformat (line_input, "ra-initial"))
3061  {
3062  if (!unformat
3063  (line_input, "%d %d", &ra_initial_count, &ra_initial_interval))
3064  {
3065  error = unformat_parse_error (line_input);
3066  goto done;
3067  }
3068  break;
3069  }
3070  else if (unformat (line_input, "ra-interval"))
3071  {
3072  if (!unformat (line_input, "%d", &ra_max_interval))
3073  {
3074  error = unformat_parse_error (line_input);
3075  goto done;
3076  }
3077 
3078  if (!unformat (line_input, "%d", &ra_min_interval))
3079  ra_min_interval = 0;
3080  break;
3081  }
3082  else if (unformat (line_input, "ra-cease"))
3083  {
3084  cease = 1;
3085  break;
3086  }
3087  else
3088  {
3089  error = unformat_parse_error (line_input);
3090  goto done;
3091  }
3092  }
3093 
3094  if (add_radv_info)
3095  {
3096  ip6_neighbor_ra_config (vm, sw_if_index,
3097  suppress, managed, other,
3098  suppress_ll_option, send_unicast, cease,
3099  use_lifetime, ra_lifetime,
3100  ra_initial_count, ra_initial_interval,
3101  ra_max_interval, ra_min_interval, is_no);
3102  }
3103  else
3104  {
3105  u32 valid_lifetime_in_secs = 0;
3106  u32 pref_lifetime_in_secs = 0;
3107  u8 use_prefix_default_values = 0;
3108  u8 no_advertise = 0;
3109  u8 off_link = 0;
3110  u8 no_autoconfig = 0;
3111  u8 no_onlink = 0;
3112 
3113  /* get the rest of the command */
3114  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3115  {
3116  if (unformat (line_input, "default"))
3117  {
3118  use_prefix_default_values = 1;
3119  break;
3120  }
3121  else if (unformat (line_input, "infinite"))
3122  {
3123  valid_lifetime_in_secs = ~0;
3124  pref_lifetime_in_secs = ~0;
3125  break;
3126  }
3127  else if (unformat (line_input, "%d %d", &valid_lifetime_in_secs,
3128  &pref_lifetime_in_secs))
3129  break;
3130  else
3131  break;
3132  }
3133 
3134 
3135  /* get the rest of the command */
3136  while (!use_prefix_default_values &&
3137  unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
3138  {
3139  if (unformat (line_input, "no-advertise"))
3140  no_advertise = 1;
3141  else if (unformat (line_input, "off-link"))
3142  off_link = 1;
3143  else if (unformat (line_input, "no-autoconfig"))
3144  no_autoconfig = 1;
3145  else if (unformat (line_input, "no-onlink"))
3146  no_onlink = 1;
3147  else
3148  {
3149  error = unformat_parse_error (line_input);
3150  goto done;
3151  }
3152  }
3153 
3154  ip6_neighbor_ra_prefix (vm, sw_if_index,
3155  &ip6_addr, addr_len,
3156  use_prefix_default_values,
3157  valid_lifetime_in_secs,
3158  pref_lifetime_in_secs,
3159  no_advertise,
3160  off_link, no_autoconfig, no_onlink, is_no);
3161  }
3162 
3163 done:
3164  unformat_free (line_input);
3165 
3166  return error;
3167 }
3168 
3169 static void
3170 ip6_print_addrs (vlib_main_t * vm, u32 * addrs)
3171 {
3172  ip_lookup_main_t *lm = &ip6_main.lookup_main;
3173  u32 i;
3174 
3175  for (i = 0; i < vec_len (addrs); i++)
3176  {
3177  ip_interface_address_t *a =
3178  pool_elt_at_index (lm->if_address_pool, addrs[i]);
3179  ip6_address_t *address = ip_interface_address_get_address (lm, a);
3180 
3181  vlib_cli_output (vm, "\t\t%U/%d",
3182  format_ip6_address, address, a->address_length);
3183  }
3184 }
3185 
3186 static clib_error_t *
3187 show_ip6_interface_cmd (vlib_main_t * vm,
3188  unformat_input_t * input, vlib_cli_command_t * cmd)
3189 {
3190  vnet_main_t *vnm = vnet_get_main ();
3191  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3192  clib_error_t *error = 0;
3193  u32 sw_if_index;
3194 
3195  sw_if_index = ~0;
3196 
3197  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
3198  {
3199  u32 ri;
3200 
3201  /* look up the radv_t information for this interface */
3202  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
3203  sw_if_index, ~0);
3204 
3205  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3206 
3207  if (ri != ~0)
3208  {
3209  ip_lookup_main_t *lm = &ip6_main.lookup_main;
3210  ip6_radv_t *radv_info;
3211  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3212 
3213  vlib_cli_output (vm, "%U is admin %s\n",
3214  format_vnet_sw_interface_name, vnm,
3215  vnet_get_sw_interface (vnm, sw_if_index),
3216  (vnet_sw_interface_is_admin_up (vnm, sw_if_index) ?
3217  "up" : "down"));
3218 
3219  u32 ai;
3220  u32 *link_scope = 0, *global_scope = 0;
3221  u32 *local_scope = 0, *unknown_scope = 0;
3222  ip_interface_address_t *a;
3223 
3224  vec_validate_init_empty (lm->if_address_pool_index_by_sw_if_index,
3225  sw_if_index, ~0);
3226  ai = lm->if_address_pool_index_by_sw_if_index[sw_if_index];
3227 
3228  while (ai != (u32) ~ 0)
3229  {
3230  a = pool_elt_at_index (lm->if_address_pool, ai);
3231  ip6_address_t *address =
3232  ip_interface_address_get_address (lm, a);
3233 
3234  if (ip6_address_is_link_local_unicast (address))
3235  vec_add1 (link_scope, ai);
3236  else if (ip6_address_is_global_unicast (address))
3237  vec_add1 (global_scope, ai);
3238  else if (ip6_address_is_local_unicast (address))
3239  vec_add1 (local_scope, ai);
3240  else
3241  vec_add1 (unknown_scope, ai);
3242 
3243  ai = a->next_this_sw_interface;
3244  }
3245 
3246  if (vec_len (link_scope))
3247  {
3248  vlib_cli_output (vm, "\tLink-local address(es):\n");
3249  ip6_print_addrs (vm, link_scope);
3250  vec_free (link_scope);
3251  }
3252 
3253  if (vec_len (local_scope))
3254  {
3255  vlib_cli_output (vm, "\tLocal unicast address(es):\n");
3256  ip6_print_addrs (vm, local_scope);
3257  vec_free (local_scope);
3258  }
3259 
3260  if (vec_len (global_scope))
3261  {
3262  vlib_cli_output (vm, "\tGlobal unicast address(es):\n");
3263  ip6_print_addrs (vm, global_scope);
3264  vec_free (global_scope);
3265  }
3266 
3267  if (vec_len (unknown_scope))
3268  {
3269  vlib_cli_output (vm, "\tOther-scope address(es):\n");
3270  ip6_print_addrs (vm, unknown_scope);
3271  vec_free (unknown_scope);
3272  }
3273 
3274  vlib_cli_output (vm, "\tJoined group address(es):\n");
3275  ip6_mldp_group_t *m;
3276  /* *INDENT-OFF* */
3277  pool_foreach (m, radv_info->mldp_group_pool,
3278  ({
3279  vlib_cli_output (vm, "\t\t%U\n", format_ip6_address,
3280  &m->mcast_address);
3281  }));
3282  /* *INDENT-ON* */
3283 
3284  vlib_cli_output (vm, "\tAdvertised Prefixes:\n");
3285  ip6_radv_prefix_t *p;
3286  /* *INDENT-OFF* */
3287  pool_foreach (p, radv_info->adv_prefixes_pool,
3288  ({
3289  vlib_cli_output (vm, "\t\tprefix %U, length %d\n",
3290  format_ip6_address, &p->prefix, p->prefix_len);
3291  }));
3292  /* *INDENT-ON* */
3293 
3294  vlib_cli_output (vm, "\tMTU is %d\n", radv_info->adv_link_mtu);
3295  vlib_cli_output (vm, "\tICMP error messages are unlimited\n");
3296  vlib_cli_output (vm, "\tICMP redirects are disabled\n");
3297  vlib_cli_output (vm, "\tICMP unreachables are not sent\n");
3298  vlib_cli_output (vm, "\tND DAD is disabled\n");
3299  //vlib_cli_output (vm, "\tND reachable time is %d milliseconds\n",);
3300  vlib_cli_output (vm, "\tND advertised reachable time is %d\n",
3301  radv_info->adv_neighbor_reachable_time_in_msec);
3302  vlib_cli_output (vm,
3303  "\tND advertised retransmit interval is %d (msec)\n",
3304  radv_info->
3305  adv_time_in_msec_between_retransmitted_neighbor_solicitations);
3306 
3307  u32 ra_interval = radv_info->max_radv_interval;
3308  u32 ra_interval_min = radv_info->min_radv_interval;
3309  vlib_cli_output (vm,
3310  "\tND router advertisements are sent every %d seconds (min interval is %d)\n",
3311  ra_interval, ra_interval_min);
3312  vlib_cli_output (vm,
3313  "\tND router advertisements live for %d seconds\n",
3314  radv_info->adv_router_lifetime_in_sec);
3315  vlib_cli_output (vm,
3316  "\tHosts %s stateless autoconfig for addresses\n",
3317  (radv_info->adv_managed_flag) ? "use" :
3318  " don't use");
3319  vlib_cli_output (vm, "\tND router advertisements sent %d\n",
3320  radv_info->n_advertisements_sent);
3321  vlib_cli_output (vm, "\tND router solicitations received %d\n",
3322  radv_info->n_solicitations_rcvd);
3323  vlib_cli_output (vm, "\tND router solicitations dropped %d\n",
3324  radv_info->n_solicitations_dropped);
3325  }
3326  else
3327  {
3328  error = clib_error_return (0, "IPv6 not enabled on interface",
3329  format_unformat_error, input);
3330 
3331  }
3332  }
3333  return error;
3334 }
3335 
3336 /*?
3337  * This command is used to display various IPv6 attributes on a given
3338  * interface.
3339  *
3340  * @cliexpar
3341  * Example of how to display IPv6 settings:
3342  * @cliexstart{show ip6 interface GigabitEthernet2/0/0}
3343  * GigabitEthernet2/0/0 is admin up
3344  * Link-local address(es):
3345  * fe80::ab8/64
3346  * Joined group address(es):
3347  * ff02::1
3348  * ff02::2
3349  * ff02::16
3350  * ff02::1:ff00:ab8
3351  * Advertised Prefixes:
3352  * prefix fe80::fe:28ff:fe9c:75b3, length 64
3353  * MTU is 1500
3354  * ICMP error messages are unlimited
3355  * ICMP redirects are disabled
3356  * ICMP unreachables are not sent
3357  * ND DAD is disabled
3358  * ND advertised reachable time is 0
3359  * ND advertised retransmit interval is 0 (msec)
3360  * ND router advertisements are sent every 200 seconds (min interval is 150)
3361  * ND router advertisements live for 600 seconds
3362  * Hosts use stateless autoconfig for addresses
3363  * ND router advertisements sent 19336
3364  * ND router solicitations received 0
3365  * ND router solicitations dropped 0
3366  * @cliexend
3367  * Example of output if IPv6 is not enabled on the interface:
3368  * @cliexstart{show ip6 interface GigabitEthernet2/0/0}
3369  * show ip6 interface: IPv6 not enabled on interface
3370  * @cliexend
3371 ?*/
3372 /* *INDENT-OFF* */
3373 VLIB_CLI_COMMAND (show_ip6_interface_command, static) =
3374 {
3375  .path = "show ip6 interface",
3376  .function = show_ip6_interface_cmd,
3377  .short_help = "show ip6 interface <interface>",
3378 };
3379 /* *INDENT-ON* */
3380 
3381 clib_error_t *
3382 disable_ip6_interface (vlib_main_t * vm, u32 sw_if_index)
3383 {
3384  clib_error_t *error = 0;
3385  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3386  u32 ri;
3387 
3388  /* look up the radv_t information for this interface */
3389  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
3390  ~0);
3391  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3392 
3393  /* if not created - do nothing */
3394  if (ri != ~0)
3395  {
3396  vnet_main_t *vnm = vnet_get_main ();
3397  ip6_radv_t *radv_info;
3398 
3399  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3400 
3401  /* check radv_info ref count for other ip6 addresses on this interface */
3402  /* This implicitly excludes the link local address */
3403  if (radv_info->ref_count == 0)
3404  {
3405  /* essentially "disables" ipv6 on this interface */
3406  error = ip6_add_del_interface_address (vm, sw_if_index,
3407  &radv_info->
3408  link_local_address, 128,
3409  1 /* is_del */ );
3410 
3411  ip6_neighbor_sw_interface_add_del (vnm, sw_if_index,
3412  0 /* is_add */ );
3413  ip6_mfib_interface_enable_disable (sw_if_index, 0);
3414  }
3415  }
3416  return error;
3417 }
3418 
3419 int
3420 ip6_interface_enabled (vlib_main_t * vm, u32 sw_if_index)
3421 {
3422  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3423  u32 ri = ~0;
3424 
3425  /* look up the radv_t information for this interface */
3426  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
3427  ~0);
3428 
3429  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3430 
3431  return ri != ~0;
3432 }
3433 
3434 clib_error_t *
3435 enable_ip6_interface (vlib_main_t * vm, u32 sw_if_index)
3436 {
3437  clib_error_t *error = 0;
3438  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3439  u32 ri;
3440  int is_add = 1;
3441 
3442  /* look up the radv_t information for this interface */
3443  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index, sw_if_index,
3444  ~0);
3445 
3446  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3447 
3448  /* if not created yet */
3449  if (ri == ~0)
3450  {
3451  vnet_main_t *vnm = vnet_get_main ();
3452  vnet_sw_interface_t *sw_if0;
3453 
3454  sw_if0 = vnet_get_sup_sw_interface (vnm, sw_if_index);
3455  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
3456  {
3457  ethernet_interface_t *eth_if0;
3458 
3459  eth_if0 =
3460  ethernet_get_interface (&ethernet_main, sw_if0->hw_if_index);
3461  if (eth_if0)
3462  {
3463  /* create radv_info. for this interface. This holds all the info needed for router adverts */
3464  ri =
3465  ip6_neighbor_sw_interface_add_del (vnm, sw_if_index, is_add);
3466 
3467  if (ri != ~0)
3468  {
3469  ip6_radv_t *radv_info;
3470  ip6_address_t link_local_address;
3471 
3472  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3473 
3474  ip6_link_local_address_from_ethernet_mac_address
3475  (&link_local_address, eth_if0->address);
3476 
3477  sw_if0 = vnet_get_sw_interface (vnm, sw_if_index);
3478  if (sw_if0->type == VNET_SW_INTERFACE_TYPE_SUB ||
3479  sw_if0->type == VNET_SW_INTERFACE_TYPE_P2P)
3480  {
3481  /* make up an interface id */
3482  md5_context_t m;
3483  u8 digest[16];
3484 
3485  link_local_address.as_u64[0] = radv_info->randomizer;
3486 
3487  md5_init (&m);
3488  md5_add (&m, &link_local_address, 16);
3489  md5_finish (&m, digest);
3490 
3491  clib_memcpy (&link_local_address, digest, 16);
3492 
3493  radv_info->randomizer = link_local_address.as_u64[0];
3494 
3495  link_local_address.as_u64[0] =
3496  clib_host_to_net_u64 (0xFE80000000000000ULL);
3497  /* clear u bit */
3498  link_local_address.as_u8[8] &= 0xfd;
3499  }
3500 
3501  ip6_mfib_interface_enable_disable (sw_if_index, 1);
3502 
3503  /* essentially "enables" ipv6 on this interface */
3504  error = ip6_add_del_interface_address (vm, sw_if_index,
3505  &link_local_address,
3506  128
3507  /* address width */ ,
3508  0 /* is_del */ );
3509 
3510  if (error)
3511  ip6_neighbor_sw_interface_add_del (vnm, sw_if_index,
3512  !is_add);
3513  else
3514  {
3515  radv_info->link_local_address = link_local_address;
3516  }
3517  }
3518  }
3519  }
3520  }
3521  return error;
3522 }
3523 
3524 static clib_error_t *
3525 enable_ip6_interface_cmd (vlib_main_t * vm,
3526  unformat_input_t * input, vlib_cli_command_t * cmd)
3527 {
3528  vnet_main_t *vnm = vnet_get_main ();
3529  clib_error_t *error = 0;
3530  u32 sw_if_index;
3531 
3532  sw_if_index = ~0;
3533 
3534  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
3535  {
3536  enable_ip6_interface (vm, sw_if_index);
3537  }
3538  else
3539  {
3540  error = clib_error_return (0, "unknown interface\n'",
3541  format_unformat_error, input);
3542 
3543  }
3544  return error;
3545 }
3546 
3547 /*?
3548  * This command is used to enable IPv6 on a given interface.
3549  *
3550  * @cliexpar
3551  * Example of how enable IPv6 on a given interface:
3552  * @cliexcmd{enable ip6 interface GigabitEthernet2/0/0}
3553 ?*/
3554 /* *INDENT-OFF* */
3555 VLIB_CLI_COMMAND (enable_ip6_interface_command, static) =
3556 {
3557  .path = "enable ip6 interface",
3558  .function = enable_ip6_interface_cmd,
3559  .short_help = "enable ip6 interface <interface>",
3560 };
3561 /* *INDENT-ON* */
3562 
3563 static clib_error_t *
3564 disable_ip6_interface_cmd (vlib_main_t * vm,
3565  unformat_input_t * input, vlib_cli_command_t * cmd)
3566 {
3567  vnet_main_t *vnm = vnet_get_main ();
3568  clib_error_t *error = 0;
3569  u32 sw_if_index;
3570 
3571  sw_if_index = ~0;
3572 
3573  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
3574  {
3575  error = disable_ip6_interface (vm, sw_if_index);
3576  }
3577  else
3578  {
3579  error = clib_error_return (0, "unknown interface\n'",
3580  format_unformat_error, input);
3581 
3582  }
3583  return error;
3584 }
3585 
3586 /*?
3587  * This command is used to disable IPv6 on a given interface.
3588  *
3589  * @cliexpar
3590  * Example of how disable IPv6 on a given interface:
3591  * @cliexcmd{disable ip6 interface GigabitEthernet2/0/0}
3592 ?*/
3593 /* *INDENT-OFF* */
3594 VLIB_CLI_COMMAND (disable_ip6_interface_command, static) =
3595 {
3596  .path = "disable ip6 interface",
3597  .function = disable_ip6_interface_cmd,
3598  .short_help = "disable ip6 interface <interface>",
3599 };
3600 /* *INDENT-ON* */
3601 
3602 /*?
3603  * This command is used to configure the neighbor discovery
3604  * parameters on a given interface. Use the '<em>show ip6 interface</em>'
3605  * command to display some of the current neighbor discovery parameters
3606  * on a given interface. This command has three formats:
3607  *
3608  *
3609  * <b>Format 1 - Router Advertisement Options:</b> (Only one can be entered in a single command)
3610  *
3611  * '<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>'
3612  *
3613  * Where:
3614  *
3615  * <em>[no] ra-managed-config-flag</em> - Advertises in ICMPv6
3616  * router-advertisement messages to use stateful address
3617  * auto-configuration to obtain address information (sets the M-bit).
3618  * Default is the M-bit is not set and the '<em>no</em>' option
3619  * returns it to this default state.
3620  *
3621  * <em>[no] ra-other-config-flag</em> - Indicates in ICMPv6
3622  * router-advertisement messages that hosts use stateful auto
3623  * configuration to obtain nonaddress related information (sets
3624  * the O-bit). Default is the O-bit is not set and the '<em>no</em>'
3625  * option returns it to this default state.
3626  *
3627  * <em>[no] ra-suppress</em> - Disables sending ICMPv6 router-advertisement
3628  * messages. The '<em>no</em>' option implies to enable sending ICMPv6
3629  * router-advertisement messages.
3630  *
3631  * <em>[no] ra-suppress-link-layer</em> - Indicates not to include the
3632  * optional source link-layer address in the ICMPv6 router-advertisement
3633  * messages. Default is to include the optional source link-layer address
3634  * and the '<em>no</em>' option returns it to this default state.
3635  *
3636  * <em>[no] ra-send-unicast</em> - Use the source address of the
3637  * router-solicitation message if availiable. The default is to use
3638  * multicast address of all nodes, and the '<em>no</em>' option returns
3639  * it to this default state.
3640  *
3641  * <em>[no] ra-lifetime <lifetime></em> - Advertises the lifetime of a
3642  * default router in ICMPv6 router-advertisement messages. The range is
3643  * from 0 to 9000 seconds. '<em><lifetime></em>' must be greater than
3644  * '<em><max-interval></em>'. The default value is 600 seconds and the
3645  * '<em>no</em>' option returns it to this default value.
3646  *
3647  * <em>[no] ra-initial <cnt> <interval></em> - Number of initial ICMPv6
3648  * router-advertisement messages sent and the interval between each
3649  * message. Range for count is 1 - 3 and default is 3. Range for interval
3650  * is 1 to 16 seconds, and default is 16 seconds. The '<em>no</em>' option
3651  * returns both to their default value.
3652  *
3653  * <em>[no] ra-interval <max-interval> [<min-interval>]</em> - Configures the
3654  * interval between sending ICMPv6 router-advertisement messages. The
3655  * range for max-interval is from 4 to 200 seconds. min-interval can not
3656  * be more than 75% of max-interval. If not set, min-interval will be
3657  * set to 75% of max-interval. The range for min-interval is from 3 to
3658  * 150 seconds. The '<em>no</em>' option returns both to their default
3659  * value.
3660  *
3661  * <em>[no] ra-cease</em> - Cease sending ICMPv6 router-advertisement messages.
3662  * The '<em>no</em>' options implies to start (or restart) sending
3663  * ICMPv6 router-advertisement messages.
3664  *
3665  *
3666  * <b>Format 2 - Prefix Options:</b>
3667  *
3668  * '<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>'
3669  *
3670  * Where:
3671  *
3672  * <em>no</em> - All additional flags are ignored and the prefix is deleted.
3673  *
3674  * <em><valid-lifetime> <pref-lifetime></em> - '<em><valid-lifetime></em>' is the
3675  * length of time in seconds during what the prefix is valid for the purpose of
3676  * on-link determination. Range is 7203 to 2592000 seconds and default is 2592000
3677  * seconds (30 days). '<em><pref-lifetime></em>' is the prefered-lifetime and is the
3678  * length of time in seconds during what addresses generated from the prefix remain
3679  * preferred. Range is 0 to 604800 seconds and default is 604800 seconds (7 days).
3680  *
3681  * <em>infinite</em> - Both '<em><valid-lifetime></em>' and '<em><<pref-lifetime></em>'
3682  * are inifinte, no timeout.
3683  *
3684  * <em>no-advertise</em> - Do not send full router address in prefix
3685  * advertisement. Default is to advertise (i.e. - This flag is off by default).
3686  *
3687  * <em>off-link</em> - Prefix is off-link, clear L-bit in packet. Default is on-link
3688  * (i.e. - This flag is off and L-bit in packet is set by default and this prefix can
3689  * be used for on-link determination). '<em>no-onlink</em>' also controls the L-bit.
3690  *
3691  * <em>no-autoconfig</em> - Do not use prefix for autoconfiguration, clear A-bit in packet.
3692  * Default is autoconfig (i.e. - This flag is off and A-bit in packet is set by default.
3693  *
3694  * <em>no-onlink</em> - Do not use prefix for onlink determination, clear L-bit in packet.
3695  * Default is on-link (i.e. - This flag is off and L-bit in packet is set by default and
3696  * this prefix can be used for on-link determination). '<em>off-link</em>' also controls
3697  * the L-bit.
3698  *
3699  *
3700  * <b>Format 3: - Default of Prefix:</b>
3701  *
3702  * '<em><b>ip6 nd <interface> [no] prefix <ip6-address>/<width> default</b></em>'
3703  *
3704  * When a new prefix is added (or existing one is being overwritten) <em>default</em>
3705  * uses default values for the prefix. If <em>no</em> is used, the <em>default</em>
3706  * is ignored and the prefix is deleted.
3707  *
3708  *
3709  * @cliexpar
3710  * Example of how set a router advertisement option:
3711  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 ra-interval 100 20}
3712  * Example of how to add a prefix:
3713  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 prefix fe80::fe:28ff:fe9c:75b3/64 infinite no-advertise}
3714  * Example of how to delete a prefix:
3715  * @cliexcmd{ip6 nd GigabitEthernet2/0/0 no prefix fe80::fe:28ff:fe9c:75b3/64}
3716 ?*/
3717 /* *INDENT-OFF* */
3718 VLIB_CLI_COMMAND (ip6_nd_command, static) =
3719 {
3720  .path = "ip6 nd",
3721  .short_help = "ip6 nd <interface> ...",
3722  .function = ip6_neighbor_cmd,
3723 };
3724 /* *INDENT-ON* */
3725 
3726 clib_error_t *
3727 set_ip6_link_local_address (vlib_main_t * vm,
3728  u32 sw_if_index, ip6_address_t * address)
3729 {
3730  clib_error_t *error = 0;
3731  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3732  u32 ri;
3733  ip6_radv_t *radv_info;
3734  vnet_main_t *vnm = vnet_get_main ();
3735 
3736  if (!ip6_address_is_link_local_unicast (address))
3737  {
3738  vnm->api_errno = VNET_API_ERROR_ADDRESS_NOT_LINK_LOCAL;
3739  return (error = clib_error_return (0, "address not link-local",
3740  format_unformat_error));
3741  }
3742 
3743  /* call enable ipv6 */
3744  enable_ip6_interface (vm, sw_if_index);
3745 
3746  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3747 
3748  if (ri != ~0)
3749  {
3750  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3751 
3752  /* save if link local address (overwrite default) */
3753 
3754  /* delete the old one */
3755  error = ip6_add_del_interface_address (vm, sw_if_index,
3756  &radv_info->link_local_address,
3757  128, 1 /* is_del */ );
3758 
3759  if (!error)
3760  {
3761  /* add the new one */
3762  error = ip6_add_del_interface_address (vm, sw_if_index,
3763  address, 128,
3764  0 /* is_del */ );
3765 
3766  if (!error)
3767  {
3768  radv_info->link_local_address = *address;
3769  }
3770  }
3771  }
3772  else
3773  {
3774  vnm->api_errno = VNET_API_ERROR_IP6_NOT_ENABLED;
3775  error = clib_error_return (0, "ip6 not enabled for interface",
3776  format_unformat_error);
3777  }
3778  return error;
3779 }
3780 
3781 clib_error_t *
3782 set_ip6_link_local_address_cmd (vlib_main_t * vm,
3783  unformat_input_t * input,
3784  vlib_cli_command_t * cmd)
3785 {
3786  vnet_main_t *vnm = vnet_get_main ();
3787  clib_error_t *error = 0;
3788  u32 sw_if_index;
3789  ip6_address_t ip6_addr;
3790 
3791  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
3792  {
3793  /* get the rest of the command */
3794  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
3795  {
3796  if (unformat (input, "%U", unformat_ip6_address, &ip6_addr))
3797  break;
3798  else
3799  return (unformat_parse_error (input));
3800  }
3801  }
3802  error = set_ip6_link_local_address (vm, sw_if_index, &ip6_addr);
3803  return error;
3804 }
3805 
3806 /*?
3807  * This command is used to assign an IPv6 Link-local address to an
3808  * interface. This command will enable IPv6 on an interface if it
3809  * is not already enabled. Use the '<em>show ip6 interface</em>' command
3810  * to display the assigned Link-local address.
3811  *
3812  * @cliexpar
3813  * Example of how to assign an IPv6 Link-local address to an interface:
3814  * @cliexcmd{set ip6 link-local address GigabitEthernet2/0/0 FE80::AB8}
3815 ?*/
3816 /* *INDENT-OFF* */
3817 VLIB_CLI_COMMAND (set_ip6_link_local_address_command, static) =
3818 {
3819  .path = "set ip6 link-local address",
3820  .short_help = "set ip6 link-local address <interface> <ip6-address>",
3821  .function = set_ip6_link_local_address_cmd,
3822 };
3823 /* *INDENT-ON* */
3824 
3825 /**
3826  * @brief callback when an interface address is added or deleted
3827  */
3828 static void
3829 ip6_neighbor_add_del_interface_address (ip6_main_t * im,
3830  uword opaque,
3831  u32 sw_if_index,
3832  ip6_address_t * address,
3833  u32 address_length,
3834  u32 if_address_index, u32 is_delete)
3835 {
3836  vnet_main_t *vnm = vnet_get_main ();
3837  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3838  u32 ri;
3839  vlib_main_t *vm = vnm->vlib_main;
3840  ip6_radv_t *radv_info;
3841  ip6_address_t a;
3842 
3843  /* create solicited node multicast address for this interface adddress */
3844  ip6_set_solicited_node_multicast_address (&a, 0);
3845 
3846  a.as_u8[0xd] = address->as_u8[0xd];
3847  a.as_u8[0xe] = address->as_u8[0xe];
3848  a.as_u8[0xf] = address->as_u8[0xf];
3849 
3850  if (!is_delete)
3851  {
3852  /* try to create radv_info - does nothing if ipv6 already enabled */
3853  enable_ip6_interface (vm, sw_if_index);
3854 
3855  /* look up the radv_t information for this interface */
3856  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
3857  sw_if_index, ~0);
3858  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3859  if (ri != ~0)
3860  {
3861  /* get radv_info */
3862  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3863 
3864  /* add address */
3865  if (!ip6_address_is_link_local_unicast (address))
3866  radv_info->ref_count++;
3867 
3868  ip6_neighbor_add_mld_prefix (radv_info, &a);
3869  }
3870  }
3871  else
3872  {
3873 
3874  /* delete */
3875  /* look up the radv_t information for this interface */
3876  vec_validate_init_empty (nm->if_radv_pool_index_by_sw_if_index,
3877  sw_if_index, ~0);
3878  ri = nm->if_radv_pool_index_by_sw_if_index[sw_if_index];
3879 
3880  if (ri != ~0)
3881  {
3882  /* get radv_info */
3883  radv_info = pool_elt_at_index (nm->if_radv_pool, ri);
3884 
3885  ip6_neighbor_del_mld_prefix (radv_info, &a);
3886 
3887  /* if interface up send MLDP "report" */
3888  radv_info->all_routers_mcast = 0;
3889 
3890  /* add address */
3891  if (!ip6_address_is_link_local_unicast (address))
3892  radv_info->ref_count--;
3893  }
3894  /* Ensure that IPv6 is disabled, and LL removed after ref_count reaches 0 */
3895  disable_ip6_interface (vm, sw_if_index);
3896  }
3897 }
3898 
3899 clib_error_t *
3900 ip6_set_neighbor_limit (u32 neighbor_limit)
3901 {
3902  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3903 
3904  nm->limit_neighbor_cache_size = neighbor_limit;
3905  return 0;
3906 }
3907 
3908 static void
3909 ip6_neighbor_table_bind (ip6_main_t * im,
3910  uword opaque,
3911  u32 sw_if_index,
3912  u32 new_fib_index, u32 old_fib_index)
3913 {
3914  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3915  ip6_neighbor_t *n = NULL;
3916  u32 i, *to_re_add = 0;
3917 
3918  /* *INDENT-OFF* */
3919  pool_foreach (n, nm->neighbor_pool,
3920  ({
3921  if (n->key.sw_if_index == sw_if_index)
3922  vec_add1 (to_re_add, n - nm->neighbor_pool);
3923  }));
3924  /* *INDENT-ON* */
3925 
3926  for (i = 0; i < vec_len (to_re_add); i++)
3927  {
3928  n = pool_elt_at_index (nm->neighbor_pool, to_re_add[i]);
3929  ip6_neighbor_adj_fib_remove (n, old_fib_index);
3930  ip6_neighbor_adj_fib_add (n, new_fib_index);
3931  }
3932  vec_free (to_re_add);
3933 }
3934 
3935 static clib_error_t *
3936 ip6_neighbor_init (vlib_main_t * vm)
3937 {
3938  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
3939  ip6_main_t *im = &ip6_main;
3940 
3941  mhash_init (&nm->neighbor_index_by_key,
3942  /* value size */ sizeof (uword),
3943  /* key size */ sizeof (ip6_neighbor_key_t));
3944 
3945  icmp6_register_type (vm, ICMP6_neighbor_solicitation,
3946  ip6_icmp_neighbor_solicitation_node.index);
3947  icmp6_register_type (vm, ICMP6_neighbor_advertisement,
3948  ip6_icmp_neighbor_advertisement_node.index);
3949  icmp6_register_type (vm, ICMP6_router_solicitation,
3950  ip6_icmp_router_solicitation_node.index);
3951  icmp6_register_type (vm, ICMP6_router_advertisement,
3952  ip6_icmp_router_advertisement_node.index);
3953 
3954  /* handler node for ip6 neighbor discovery events and timers */
3955  vlib_register_node (vm, &ip6_icmp_neighbor_discovery_event_node);
3956 
3957  /* add call backs */
3958  ip6_add_del_interface_address_callback_t cb;
3959  memset (&cb, 0x0, sizeof (ip6_add_del_interface_address_callback_t));
3960 
3961  /* when an interface address changes... */
3962  cb.function = ip6_neighbor_add_del_interface_address;
3963  cb.function_opaque = 0;
3964  vec_add1 (im->add_del_interface_address_callbacks, cb);
3965 
3966  ip6_table_bind_callback_t cbt;
3967  cbt.function = ip6_neighbor_table_bind;
3968  cbt.function_opaque = 0;
3969  vec_add1 (im->table_bind_callbacks, cbt);
3970 
3971  mhash_init (&nm->pending_resolutions_by_address,
3972  /* value size */ sizeof (uword),
3973  /* key size */ sizeof (ip6_address_t));
3974 
3975  mhash_init (&nm->mac_changes_by_address,
3976  /* value size */ sizeof (uword),
3977  /* key size */ sizeof (ip6_address_t));
3978 
3979  /* default, configurable */
3980  nm->limit_neighbor_cache_size = 50000;
3981 
3982  nm->wc_ip6_nd_publisher_node = (uword) ~ 0;
3983 
3984 #if 0
3985  /* $$$$ Hack fix for today */
3986  vec_validate_init_empty
3987  (im->discover_neighbor_next_index_by_hw_if_index, 32, 0 /* drop */ );
3988 #endif
3989 
3990  return 0;
3991 }
3992 
3993 VLIB_INIT_FUNCTION (ip6_neighbor_init);
3994 
3995 
3996 void
3997 vnet_register_ip6_neighbor_resolution_event (vnet_main_t * vnm,
3998  void *address_arg,
3999  uword node_index,
4000  uword type_opaque, uword data)
4001 {
4002  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4003  ip6_address_t *address = address_arg;
4004  uword *p;
4005  pending_resolution_t *pr;
4006 
4007  pool_get (nm->pending_resolutions, pr);
4008 
4009  pr->next_index = ~0;
4010  pr->node_index = node_index;
4011  pr->type_opaque = type_opaque;
4012  pr->data = data;
4013 
4014  p = mhash_get (&nm->pending_resolutions_by_address, address);
4015  if (p)
4016  {
4017  /* Insert new resolution at the head of the list */
4018  pr->next_index = p[0];
4019  mhash_unset (&nm->pending_resolutions_by_address, address, 0);
4020  }
4021 
4022  mhash_set (&nm->pending_resolutions_by_address, address,
4023  pr - nm->pending_resolutions, 0 /* old value */ );
4024 }
4025 
4026 int
4027 vnet_add_del_ip6_nd_change_event (vnet_main_t * vnm,
4028  void *data_callback,
4029  u32 pid,
4030  void *address_arg,
4031  uword node_index,
4032  uword type_opaque, uword data, int is_add)
4033 {
4034  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4035  ip6_address_t *address = address_arg;
4036 
4037  /* Try to find an existing entry */
4038  u32 *first = (u32 *) mhash_get (&nm->mac_changes_by_address, address);
4039  u32 *p = first;
4040  pending_resolution_t *mc;
4041  while (p && *p != ~0)
4042  {
4043  mc = pool_elt_at_index (nm->mac_changes, *p);
4044  if (mc->node_index == node_index && mc->type_opaque == type_opaque
4045  && mc->pid == pid)
4046  break;
4047  p = &mc->next_index;
4048  }
4049 
4050  int found = p && *p != ~0;
4051  if (is_add)
4052  {
4053  if (found)
4054  return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
4055 
4056  pool_get (nm->mac_changes, mc);
4057  *mc = (pending_resolution_t)
4058  {
4059  .next_index = ~0,.node_index = node_index,.type_opaque =
4060  type_opaque,.data = data,.data_callback = data_callback,.pid =
4061  pid,};
4062 
4063  /* Insert new resolution at the end of the list */
4064  u32 new_idx = mc - nm->mac_changes;
4065  if (p)
4066  p[0] = new_idx;
4067  else
4068  mhash_set (&nm->mac_changes_by_address, address, new_idx, 0);
4069  }
4070  else
4071  {
4072  if (!found)
4073  return VNET_API_ERROR_NO_SUCH_ENTRY;
4074 
4075  /* Clients may need to clean up pool entries, too */
4076  void (*fp) (u32, u8 *) = data_callback;
4077  if (fp)
4078  (*fp) (mc->data, 0 /* no new mac addrs */ );
4079 
4080  /* Remove the entry from the list and delete the entry */
4081  *p = mc->next_index;
4082  pool_put (nm->mac_changes, mc);
4083 
4084  /* Remove from hash if we deleted the last entry */
4085  if (*p == ~0 && p == first)
4086  mhash_unset (&nm->mac_changes_by_address, address, 0);
4087  }
4088  return 0;
4089 }
4090 
4091 int
4092 vnet_ip6_nd_term (vlib_main_t * vm,
4093  vlib_node_runtime_t * node,
4094  vlib_buffer_t * p0,
4095  ethernet_header_t * eth,
4096  ip6_header_t * ip, u32 sw_if_index, u16 bd_index)
4097 {
4098  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4099  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
4100 
4101  ndh = ip6_next_header (ip);
4102  if (ndh->icmp.type != ICMP6_neighbor_solicitation &&
4103  ndh->icmp.type != ICMP6_neighbor_advertisement)
4104  return 0;
4105 
4106  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
4107  (p0->flags & VLIB_BUFFER_IS_TRACED)))
4108  {
4109  u8 *t0 = vlib_add_trace (vm, node, p0,
4110  sizeof (icmp6_input_trace_t));
4111  clib_memcpy (t0, ip, sizeof (icmp6_input_trace_t));
4112  }
4113 
4114  /* Check if anyone want ND events for L2 BDs */
4115  if (PREDICT_FALSE
4116  (nm->wc_ip6_nd_publisher_node != (uword) ~ 0
4117  && !ip6_address_is_link_local_unicast (&ip->src_address)))
4118  {
4119  vnet_nd_wc_publish (sw_if_index, eth->src_address, &ip->src_address);
4120  }
4121 
4122  /* Check if MAC entry exsist for solicited target IP */
4123  if (ndh->icmp.type == ICMP6_neighbor_solicitation)
4124  {
4125  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
4126  l2_bridge_domain_t *bd_config;
4127  u8 *macp;
4128 
4129  opt = (void *) (ndh + 1);
4130  if ((opt->header.type !=
4131  ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address) ||
4132  (opt->header.n_data_u64s != 1))
4133  return 0; /* source link layer address option not present */
4134 
4135  bd_config = vec_elt_at_index (l2input_main.bd_configs, bd_index);
4136  macp =
4137  (u8 *) hash_get_mem (bd_config->mac_by_ip6, &ndh->target_address);
4138  if (macp)
4139  { /* found ip-mac entry, generate eighbor advertisement response */
4140  int bogus_length;
4141  vlib_node_runtime_t *error_node =
4142  vlib_node_get_runtime (vm, ip6_icmp_input_node.index);
4143  ip->dst_address = ip->src_address;
4144  ip->src_address = ndh->target_address;
4145  ip->hop_limit = 255;
4146  opt->header.type =
4147  ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
4148  clib_memcpy (opt->ethernet_address, macp, 6);
4149  ndh->icmp.type = ICMP6_neighbor_advertisement;
4150  ndh->advertisement_flags = clib_host_to_net_u32
4151  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
4152  ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
4153  ndh->icmp.checksum = 0;
4154  ndh->icmp.checksum =
4155  ip6_tcp_udp_icmp_compute_checksum (vm, p0, ip, &bogus_length);
4156  clib_memcpy (eth->dst_address, eth->src_address, 6);
4157  clib_memcpy (eth->src_address, macp, 6);
4158  vlib_error_count (vm, error_node->node_index,
4159  ICMP6_ERROR_NEIGHBOR_ADVERTISEMENTS_TX, 1);
4160  return 1;
4161  }
4162  }
4163 
4164  return 0;
4165 
4166 }
4167 
4168 int
4169 ip6_neighbor_proxy_add_del (u32 sw_if_index, ip6_address_t * addr, u8 is_del)
4170 {
4171  u32 fib_index;
4172 
4173  fib_prefix_t pfx = {
4174  .fp_len = 128,
4175  .fp_proto = FIB_PROTOCOL_IP6,
4176  .fp_addr = {
4177  .ip6 = *addr,
4178  },
4179  };
4180  ip46_address_t nh = {
4181  .ip6 = *addr,
4182  };
4183 
4184  fib_index = ip6_fib_table_get_index_for_sw_if_index (sw_if_index);
4185 
4186  if (~0 == fib_index)
4187  return VNET_API_ERROR_NO_SUCH_FIB;
4188 
4189  if (is_del)
4190  {
4191  fib_table_entry_path_remove (fib_index,
4192  &pfx,
4193  FIB_SOURCE_IP6_ND_PROXY,
4194  DPO_PROTO_IP6,
4195  &nh,
4196  sw_if_index,
4197  ~0, 1, FIB_ROUTE_PATH_FLAG_NONE);
4198  /* flush the ND cache of this address if it's there */
4199  vnet_unset_ip6_ethernet_neighbor (vlib_get_main (),
4200  sw_if_index, addr, NULL, 0);
4201  }
4202  else
4203  {
4204  fib_table_entry_path_add (fib_index,
4205  &pfx,
4206  FIB_SOURCE_IP6_ND_PROXY,
4207  FIB_ENTRY_FLAG_NONE,
4208  DPO_PROTO_IP6,
4209  &nh,
4210  sw_if_index,
4211  ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
4212  }
4213  return (0);
4214 }
4215 
4216 static clib_error_t *
4217 set_ip6_nd_proxy_cmd (vlib_main_t * vm,
4218  unformat_input_t * input, vlib_cli_command_t * cmd)
4219 {
4220  vnet_main_t *vnm = vnet_get_main ();
4221  clib_error_t *error = 0;
4222  ip6_address_t addr;
4223  u32 sw_if_index;
4224  u8 is_del = 0;
4225 
4226  if (unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
4227  {
4228  /* get the rest of the command */
4229  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
4230  {
4231  if (unformat (input, "%U", unformat_ip6_address, &addr))
4232  break;
4233  else if (unformat (input, "delete") || unformat (input, "del"))
4234  is_del = 1;
4235  else
4236  return (unformat_parse_error (input));
4237  }
4238  }
4239 
4240  ip6_neighbor_proxy_add_del (sw_if_index, &addr, is_del);
4241 
4242  return error;
4243 }
4244 
4245 /* *INDENT-OFF* */
4246 VLIB_CLI_COMMAND (set_ip6_nd_proxy_command, static) =
4247 {
4248  .path = "set ip6 nd proxy",
4249  .short_help = "set ip6 nd proxy <HOST> <INTERFACE>",
4250  .function = set_ip6_nd_proxy_cmd,
4251 };
4252 /* *INDENT-ON* */
4253 
4254 void
4255 ethernet_ndp_change_mac (u32 sw_if_index)
4256 {
4257  ip6_neighbor_main_t *nm = &ip6_neighbor_main;
4258  ip6_neighbor_t *n;
4259 
4260  /* *INDENT-OFF* */
4261  pool_foreach (n, nm->neighbor_pool,
4262  ({
4263  if (n->key.sw_if_index == sw_if_index)
4264  {
4265  adj_nbr_walk_nh6 (sw_if_index,
4266  &n->key.ip6_address,
4267  ip6_nd_mk_complete_walk, n);
4268  }
4269  }));
4270  /* *INDENT-ON* */
4271 }
4272 
4273 void
4274 send_ip6_na (vlib_main_t * vm, vnet_hw_interface_t * hi)
4275 {
4276  ip6_main_t *i6m = &ip6_main;
4277  u32 sw_if_index = hi->sw_if_index;
4278  ip6_address_t *ip6_addr = ip6_interface_first_address (i6m, sw_if_index);
4279  if (ip6_addr)
4280  {
4281  clib_warning
4282  ("Sending unsolicitated NA IP6 address %U on sw_if_idex %d",
4283  format_ip6_address, ip6_addr, sw_if_index);
4284 
4285  /* Form unsolicited neighbor advertisement packet from NS pkt template */
4286  int bogus_length;
4287  u32 bi = 0;
4288  icmp6_neighbor_solicitation_header_t *h =
4289  vlib_packet_template_get_packet (vm,
4290  &i6m->discover_neighbor_packet_template,
4291  &bi);
4292  ip6_set_reserved_multicast_address (&h->ip.dst_address,
4293  IP6_MULTICAST_SCOPE_link_local,
4294  IP6_MULTICAST_GROUP_ID_all_hosts);
4295  h->ip.src_address = ip6_addr[0];
4296  h->neighbor.icmp.type = ICMP6_neighbor_advertisement;
4297  h->neighbor.target_address = ip6_addr[0];
4298  h->neighbor.advertisement_flags = clib_host_to_net_u32
4299  (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
4300  clib_memcpy (h->link_layer_option.ethernet_address,
4301  hi->hw_address, vec_len (hi->hw_address));
4302  h->neighbor.icmp.checksum =
4303  ip6_tcp_udp_icmp_compute_checksum (vm, 0, &h->ip, &bogus_length);
4304  ASSERT (bogus_length == 0);
4305 
4306  /* Setup MAC header with IP6 Etype and mcast DMAC */
4307  vlib_buffer_t *b = vlib_get_buffer (vm, bi);
4308  vlib_buffer_advance (b, -sizeof (ethernet_header_t));
4309  ethernet_header_t *e = vlib_buffer_get_current (b);
4310  e->type = clib_host_to_net_u16 (ETHERNET_TYPE_IP6);
4311  clib_memcpy (e->src_address, hi->hw_address, sizeof (e->src_address));
4312  ip6_multicast_ethernet_address (e->dst_address,
4313  IP6_MULTICAST_GROUP_ID_all_hosts);
4314 
4315  /* Send unsolicited ND advertisement packet out the specified interface */
4316  vnet_buffer (b)->sw_if_index[VLIB_RX] =
4317  vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index;
4318  vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index);
4319  u32 *to_next = vlib_frame_vector_args (f);
4320  to_next[0] = bi;
4321  f->n_vectors = 1;
4322  vlib_put_frame_to_node (vm, hi->output_node_index, f);
4323  }
4324 }
4325 
4326 /*
4327  * fd.io coding-style-patch-verification: ON
4328  *
4329  * Local Variables:
4330  * eval: (c-set-style "gnu")
4331  * End:
4332  */
ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
#define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED
ip6_neighbor_main_t::if_radv_pool
ip6_radv_t * if_radv_pool
Definition: ip6_neighbor.c:192
MIN_DELAY_BETWEEN_RAS
#define MIN_DELAY_BETWEEN_RAS
Definition: ip6_neighbor.c:131
ip6_neighbor_adj_fib_add
static void ip6_neighbor_adj_fib_add(ip6_neighbor_t *n, u32 fib_index)
Definition: ip6_neighbor.c:639
vnet_rewrite_one_header
#define vnet_rewrite_one_header(rw0, p0, most_likely_size)
Definition: rewrite.h:281
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:500
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vmrglw vmrglh hi
Definition: vector_altivec.h:119
pool_next_index
#define pool_next_index(P, I)
Return next occupied pool index after i, useful for safe iteration.
Definition: pool.h:467
mhash_t
Definition: mhash.h:46
md5_finish
void md5_finish(md5_context_t *c, u8 *digest)
Definition: md5.c:290
VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST
#define VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST
Definition: rewrite.h:313
icmp6_router_solicitation_or_advertisement_next_t
icmp6_router_solicitation_or_advertisement_next_t
Definition: ip6_neighbor.c:1332
md5_context_t
Definition: md5.h:29
ip6_radv_t::n_solicitations_rcvd
u32 n_solicitations_rcvd
Definition: ip6_neighbor.c:152
unset_random_neighbor_entry
static void unset_random_neighbor_entry(void)
Definition: ip6_neighbor.c:357
ip6_neighbor_syslog
static void ip6_neighbor_syslog(vlib_main_t *vm, int priority, char *fmt,...)
Definition: ip6_neighbor.c:1302
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sll srl srl sll sra u16x4 i
Definition: vector_sse2.h:337
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
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:234
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:2663
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
a
a
Definition: bitmap.h:516
ip6_neighbor_ra_prefix
int ip6_neighbor_ra_prefix(vlib_main_t *vm, u32 sw_if_index, ip6_address_t *prefix_addr, u8 prefix_len, u8 use_default, u32 val_lifetime, u32 pref_lifetime, u8 no_advertise, u8 off_link, u8 no_autoconfig, u8 no_onlink, u8 is_no)
Definition: ip6_neighbor.c:2801
ADJ_NBR_REWRITE_FLAG_INCOMPLETE
An indication that the rewrite is incomplete, i.e.
Definition: adj_nbr.h:90
ip6_nbr_probe
static void ip6_nbr_probe(ip_adjacency_t *adj)
Definition: ip6_neighbor.c:422
ip6_neighbor_init
static clib_error_t * ip6_neighbor_init(vlib_main_t *vm)
Definition: ip6_neighbor.c:3936
ip6_radv_t::last_radv_time
f64 last_radv_time
Definition: ip6_neighbor.c:141
ip_lookup_main_t::if_address_pool
ip_interface_address_t * if_address_pool
Pool of addresses that are assigned to interfaces.
Definition: lookup.h: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:83
log_level_strings
static char * log_level_strings[]
Definition: ip6_neighbor.c:1293
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Definition: ip6_packet.h:130
ip6_neighbor_set_unset_rpc_args_t
Definition: ip6_neighbor.c:387
ip6_nd_mk_complete
static void ip6_nd_mk_complete(adj_index_t ai, ip6_neighbor_t *nbr)
Definition: ip6_neighbor.c:490
ip6_neighbor_main_t::neighbor_index_by_key
mhash_t neighbor_index_by_key
Definition: ip6_neighbor.c:188
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:2107
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uword function_opaque
Definition: ip6.h:113
ip6_address_t::as_u8
u8 as_u8[16]
Definition: ip6_packet.h:48
ip6_address_t::as_u64
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Definition: ip6_packet.h:51
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int adv_autonomous_flag
Definition: ip6_neighbor.c:47
set_ip6_nd_proxy_cmd
static clib_error_t * set_ip6_nd_proxy_cmd(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:4217
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:302
ip6_address_is_local_unicast
static uword ip6_address_is_local_unicast(ip6_address_t *a)
Definition: ip6_packet.h:303
ip6_radv_t::last_multicast_time
f64 last_multicast_time
Definition: ip6_neighbor.c:142
md5_init
void md5_init(md5_context_t *c)
Definition: md5.c:211
adj_get_link_type
vnet_link_t adj_get_link_type(adj_index_t ai)
Return the link type of the adjacency.
Definition: adj.c:365
NULL
#define NULL
Definition: clib.h:55
mhash_unset
uword mhash_unset(mhash_t *h, void *key, uword *old_value)
Definition: mhash.c:353
vlib_node_t::index
u32 index
Definition: node.h:237
vlib_time_now
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:224
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:174
ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_RW
Definition: ip6_neighbor.c:1335
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:396
ethernet_header_t::src_address
u8 src_address[6]
Definition: packet.h:54
ip6_address_is_global_unicast
static uword ip6_address_is_global_unicast(ip6_address_t *a)
Definition: ip6_packet.h:310
wc_nd_signal_report
static void wc_nd_signal_report(wc_nd_report_t *r)
Definition: ip6_neighbor.c:243
ip6_neighbors_entries
ip6_neighbor_t * ip6_neighbors_entries(u32 sw_if_index)
Definition: ip6_neighbor.c:877
ip6_neighbor_main_t::pending_resolutions
pending_resolution_t * pending_resolutions
Definition: ip6_neighbor.c:178
set_ip6_neighbor_command
static vlib_cli_command_t set_ip6_neighbor_command
(constructor) VLIB_CLI_COMMAND (set_ip6_neighbor_command)
Definition: ip6_neighbor.c:1009
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
ETHER_MAC_ADDR_LEN
#define ETHER_MAC_ADDR_LEN
Definition: ip6_neighbor.c:38
vec_add1
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:518
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:448
vnet_sw_interface_compare
word vnet_sw_interface_compare(vnet_main_t *vnm, uword sw_if_index0, uword sw_if_index1)
Definition: interface.c:1142
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:513
logmask
static int logmask
Definition: ip6_neighbor.c:1299
vlib_node_registration_t
struct _vlib_node_registration vlib_node_registration_t
ip6_header_t::hop_limit
u8 hop_limit
Definition: ip6_packet.h:338
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:4169
unformat_user
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:983
STRUCT_OFFSET_OF
#define STRUCT_OFFSET_OF(t, f)
Definition: clib.h:62
ip6_radv_prefix_t::adv_pref_lifetime_in_secs
u32 adv_pref_lifetime_in_secs
Definition: ip6_neighbor.c:49
DEF_ADV_PREF_LIFETIME
#define DEF_ADV_PREF_LIFETIME
Definition: ip6_neighbor.c:62
vnet_get_sw_interface
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
Definition: interface_funcs.h:50
vnet_sw_interface_t
Definition: interface.h:569
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:2144
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
format_vlib_cpu_time
format_function_t format_vlib_cpu_time
Definition: node_funcs.h:1152
unformat_vnet_sw_interface
unformat_function_t unformat_vnet_sw_interface
Definition: interface_funcs.h:305
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:4027
ip6_radv_t::adv_neighbor_reachable_time_in_msec
u32 adv_neighbor_reachable_time_in_msec
Definition: ip6_neighbor.c:86
ip6_radv_t
Definition: ip6_neighbor.c:78
vlib_node_runtime_t::errors
vlib_error_t * errors
Vector of errors for this node.
Definition: node.h:415
FIB_ENTRY_FLAG_ATTACHED
Definition: fib_entry.h:240
pool_get
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:225
ip6_neighbor_set_unset_rpc_args_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.c:393
ip6_header_t::src_address
ip6_address_t src_address
Definition: ip6_packet.h:341
ip6_radv_t::send_radv
int send_radv
Definition: ip6_neighbor.c:110
format_vnet_sw_if_index_name
format_function_t format_vnet_sw_if_index_name
Definition: interface_funcs.h:301
vlib_frame_t
Definition: node.h:332
pending_resolution_t::data_callback
void * data_callback
Definition: arp.c:67
disable_ip6_interface
clib_error_t * disable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:3382
ip_adjacency_t_::ia_link
vnet_link_t ia_link
link/ether-type 1 bytes
Definition: adj.h:195
wc_nd_report_t
Definition: ip6_neighbor.h:92
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:2447
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:200
ip6_neighbor_t::flags
ip6_neighbor_flags_t flags
Definition: ip6_neighbor.h:42
vlib_node_runtime_t
Definition: node.h:409
ethernet_main
ethernet_main_t ethernet_main
Definition: init.c:45
ip6_fib_table_lookup_exact_match
fib_node_index_t ip6_fib_table_lookup_exact_match(u32 fib_index, const ip6_address_t *addr, u32 len)
Definition: ip6_fib.c:247
ip6_print_addrs
static void ip6_print_addrs(vlib_main_t *vm, u32 *addrs)
Definition: ip6_neighbor.c:3170
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:365
ICMP6_ROUTER_SOLICITATION_NEXT_DROP
Definition: ip6_neighbor.c:1334
vnet_hw_interface_t::hw_address
u8 * hw_address
Definition: interface.h:427
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:782
pool_foreach
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:438
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:229
VLIB_INIT_FUNCTION
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:111
vnet_main_t::local_interface_sw_if_index
u32 local_interface_sw_if_index
Definition: vnet.h: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
ip6_neighbor_main_t::wc_ip6_nd_publisher_node
uword wc_ip6_nd_publisher_node
Definition: ip6_neighbor.c:199
ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE
#define ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE
ethernet_header_t::dst_address
u8 dst_address[6]
Definition: packet.h:53
ip6_neighbor_set_unset_rpc_args_t::is_add
u8 is_add
Definition: ip6_neighbor.c:389
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:3564
format_ip6_neighbor_ip6_entry
static u8 * format_ip6_neighbor_ip6_entry(u8 *s, va_list *va)
Definition: ip6_neighbor.c:267
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:2576
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:897
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:656
DEF_ADV_VALID_LIFETIME
#define DEF_ADV_VALID_LIFETIME
Definition: ip6_neighbor.c:61
ip6_radv_t::address_to_mldp_index
mhash_t address_to_mldp_index
Definition: ip6_neighbor.c:106
vec_elt_at_index
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
Definition: vec_bootstrap.h:174
vnet_get_sup_sw_interface
static vnet_sw_interface_t * vnet_get_sup_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
Definition: interface_funcs.h:73
fib_prefix_t_
Aggregrate type for a prefix.
Definition: fib_types.h:172
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:109
ICMP6_ROUTER_SOLICITATION_N_NEXT
Definition: ip6_neighbor.c:1337
u64
unsigned long u64
Definition: types.h:89
adj_unlock
void adj_unlock(adj_index_t adj_index)
Release a reference counting lock on the adjacency.
Definition: adj.c:239
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:3727
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:215
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:952
ip6_neighbor_main_t::neighbor_input_next_index_by_hw_if_index
u32 * neighbor_input_next_index_by_hw_if_index
Definition: ip6_neighbor.c:184
vnet_ip6_nd_term
int vnet_ip6_nd_term(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_buffer_t *p0, ethernet_header_t *eth, ip6_header_t *ip, u32 sw_if_index, u16 bd_index)
Definition: ip6_neighbor.c:4092
fib_prefix_t_::fp_len
u16 fp_len
The mask length.
Definition: fib_types.h:176
ethernet_ip6_mcast_dst_addr
const u8 * ethernet_ip6_mcast_dst_addr(void)
Definition: interface.c:65
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:355
ip6_neighbor_main_t::opcode_by_name
uword * opcode_by_name
Definition: ip6_neighbor.c:174
MAX_DELAY_BETWEEN_RAS
#define MAX_DELAY_BETWEEN_RAS
Definition: ip6_neighbor.c:132
FIB_ENTRY_FLAG_NONE
Definition: fib_entry.h:238
ip6_table_bind_callback_t
Definition: ip6.h:110
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:495
vnet_main_t::api_errno
vnet_api_error_t api_errno
Definition: vnet.h:76
FIB_ENTRY_FLAG_LOCAL
Definition: fib_entry.h:243
ip6_radv_prefix_t::pref_lifetime_expires
f64 pref_lifetime_expires
Definition: ip6_neighbor.c:53
format_vnet_sw_interface_name
format_function_t format_vnet_sw_interface_name
Definition: interface_funcs.h:299
ip6_neighbor_key_t
Definition: ip6_neighbor.h:24
ICMP6_ROUTER_SOLICITATION_NEXT_REPLY_TX
Definition: ip6_neighbor.c:1336
ip6_header_t::protocol
u8 protocol
Definition: ip6_packet.h:335
ADJ_INDEX_INVALID
#define ADJ_INDEX_INVALID
Invalid ADJ index - used when no adj is known likewise blazoned capitals INVALID speak volumes where ...
Definition: adj_types.h:36
pool_elt_at_index
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:459
vnet_main_t::vlib_main
vlib_main_t * vlib_main
Definition: vnet.h:78
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:3997
vlib_buffer_t::current_length
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:72
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:950
FIB_SOURCE_ADJ
Adjacency source.
Definition: fib_entry.h:100
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:195
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:2128
ip_adjacency_t_::nbr
struct ip_adjacency_t_::@38::@39 nbr
IP_LOOKUP_NEXT_ARP/IP_LOOKUP_NEXT_REWRITE.
ethernet_interface::address
u8 address[6]
Definition: ethernet.h:134
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:793
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:401
wc_nd_report_t::mac
u8 mac[6]
Definition: ip6_neighbor.h:96
ip6_radv_t::all_routers_mcast
int all_routers_mcast
Definition: ip6_neighbor.c:116
unformat_input_t
struct _unformat_input_t unformat_input_t
enable_ip6_interface_cmd
static clib_error_t * enable_ip6_interface_cmd(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:3525
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:195
VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX
#define VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX
Definition: buffer.h:434
ip6_neighbor_main_t::limit_neighbor_cache_size
u32 limit_neighbor_cache_size
Definition: ip6_neighbor.c:195
pool_put
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:271
foreach_log_level
#define foreach_log_level
Definition: ip6_neighbor.c:1276
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:844
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:197
ip6_address_compare
int ip6_address_compare(ip6_address_t *a1, ip6_address_t *a2)
Definition: ip46_cli.c:58
PREDICT_FALSE
#define PREDICT_FALSE(x)
Definition: clib.h: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
VLIB_FRAME_SIZE
#define VLIB_FRAME_SIZE
Definition: node.h:328
ip6_radv_t::adv_other_flag
int adv_other_flag
Definition: ip6_neighbor.c:84
vlib_node_runtime_t::node_index
u32 node_index
Node index.
Definition: node.h:437
ip6_radv_t::address_to_prefix_index
mhash_t address_to_prefix_index
Definition: ip6_neighbor.c:100
vlib_validate_buffer_enqueue_x1
#define vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, bi0, next0)
Finish enqueueing one buffer forward in the graph.
Definition: buffer_node.h: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
ip6_main_t::add_del_interface_address_callbacks
ip6_add_del_interface_address_callback_t * add_del_interface_address_callbacks
Definition: ip6.h:194
ip6_neighbor.h
vlib_buffer_t::error
vlib_error_t error
Error code for buffers to be enqueued to error handler.
Definition: buffer.h:113
IP6_NEIGHBOR_FLAG_DYNAMIC
Definition: ip6_neighbor.h:34
ip6_link_local_address_from_ethernet_mac_address
void ip6_link_local_address_from_ethernet_mac_address(ip6_address_t *ip, u8 *mac)
Definition: ip6_forward.c:3103
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:2074
ip6_radv_t::failed_device_check
int failed_device_check
Definition: ip6_neighbor.c:115
FIB_ROUTE_PATH_FLAG_NONE
Definition: fib_types.h:289
ethernet_header_t::type
u16 type
Definition: packet.h:57
ip_adjacency_t_::sub_type
union ip_adjacency_t_::@38 sub_type
ip6_icmp_input_node
vlib_node_registration_t ip6_icmp_input_node
(constructor) VLIB_REGISTER_NODE (ip6_icmp_input_node)
Definition: icmp6.c:240
unformat_ip6_address
unformat_function_t unformat_ip6_address
Definition: format.h:94
wc_nd_report_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.h:94
pool_free
#define pool_free(p)
Free a pool.
Definition: pool.h:352
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:1025
wc_nd_set_publisher_node
void wc_nd_set_publisher_node(uword node_index, uword event_type)
Definition: ip6_neighbor.c:259
enable_ip6_interface
clib_error_t * enable_ip6_interface(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:3435
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:1017
ip6_radv_t::adv_managed_flag
int adv_managed_flag
Definition: ip6_neighbor.c:83
ip6_main_t
Definition: ip6.h:151
vlib_buffer_get_free_list_index
static u32 vlib_buffer_get_free_list_index(vlib_buffer_t *b)
Definition: buffer_funcs.h:258
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:2653
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
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:99
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_buffer_add_data
u32 vlib_buffer_add_data(vlib_main_t *vm, u32 free_list_index, u32 buffer_index, void *data, u32 n_data_bytes)
Definition: buffer.c:820
FIB_PROTOCOL_IP6
Definition: fib_types.h:37
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
vlib_frame_t::n_vectors
u16 n_vectors
Definition: node.h:344
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:95
ip6a_zero
static ip6_address_t ip6a_zero
Definition: ip6_neighbor.c:220
vm
vlib_main_t * vm
Definition: buffer.c:283
h
vec_header_t h
Definition: buffer.c:282
vnet_hw_interface_t
Definition: interface.h:387
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:301
log_level_t
log_level_t
Definition: ip6_neighbor.c:1286
vec_free
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:336
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:1021
ICMP6_ND_EVENT_INIT
Definition: ip6_neighbor.c:206
clib_warning
#define clib_warning(format, args...)
Definition: error.h:59
VLIB_BUFFER_IS_TRACED
#define VLIB_BUFFER_IS_TRACED
Definition: buffer.h:93
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:62
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:3909
ip6_icmp_neighbor_discovery_event_data_t::up_down_swindex
u32 up_down_swindex
Definition: ip6_neighbor.c:214
vl_api_rpc_call_main_thread
void vl_api_rpc_call_main_thread(void *fp, u8 *data, u32 data_length)
Definition: memory_vlib.c:1916
DEF_CURR_HOP_LIMIT
#define DEF_CURR_HOP_LIMIT
Definition: ip6_neighbor.c:125
vlib_buffer_alloc_from_free_list
static u32 vlib_buffer_alloc_from_free_list(vlib_main_t *vm, u32 *buffers, u32 n_buffers, u32 free_list_index)
Allocate buffers from specific freelist into supplied array.
Definition: buffer_funcs.h:284
vlib_main_t::elog_main
elog_main_t elog_main
Definition: main.h:155
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:29
pending_resolution_t::pid
u32 pid
Definition: arp.c:68
ethernet_header_t
Definition: packet.h:50
show_ip6_neighbors_command
static vlib_cli_command_t show_ip6_neighbors_command
(constructor) VLIB_CLI_COMMAND (show_ip6_neighbors_command)
Definition: ip6_neighbor.c:944
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
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:83
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
md5_add
void md5_add(md5_context_t *c, void *data, int data_bytes)
Definition: md5.c:235
ip6_neighbor_t::cpu_time_last_updated
u64 cpu_time_last_updated
Definition: ip6_neighbor.h:43
send_ip6_na
void send_ip6_na(vlib_main_t *vm, vnet_hw_interface_t *hi)
Definition: ip6_neighbor.c:4274
ip6_next_header
static void * ip6_next_header(ip6_header_t *i)
Definition: ip6_packet.h:351
ip6_neighbor_set_unset_rpc_args_t::is_no_fib_entry
u8 is_no_fib_entry
Definition: ip6_neighbor.c:391
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:1133
ip6_add_del_interface_address_callback_t::function
ip6_add_del_interface_address_function_t * function
Definition: ip6.h:102
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:456
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:576
vnet_hw_interface_t::max_l3_packet_bytes
u32 max_l3_packet_bytes[VLIB_N_RX_TX]
Definition: interface.h:472
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:573
ip6_radv_prefix_t::enabled
int enabled
Definition: ip6_neighbor.c:56
u32
unsigned int u32
Definition: types.h:88
ip6_neighbor_main_t::neighbor_delete_rotor
u32 neighbor_delete_rotor
Definition: ip6_neighbor.c:196
l2_bridge_domain_t
Definition: l2_bd.h: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:171
ip6_main
ip6_main_t ip6_main
Definition: ip6_forward.c:3009
ip6_main_t::lookup_main
ip_lookup_main_t lookup_main
Definition: ip6.h:158
ip6_add_del_interface_address_callback_t::function_opaque
uword function_opaque
Definition: ip6.h:103
ip6_neighbor_key_t::pad
u32 pad
Definition: ip6_neighbor.h:28
ctx
long ctx[MAX_CONNS]
Definition: main.c:122
ip6_radv_t::n_advertisements_sent
u32 n_advertisements_sent
Definition: ip6_neighbor.c:151
ip6_radv_t::sw_if_index
u32 sw_if_index
Definition: ip6_neighbor.c:109
mhash_free
static void mhash_free(mhash_t *h)
Definition: mhash.h:149
show_ip6_interface_cmd
static clib_error_t * show_ip6_interface_cmd(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: ip6_neighbor.c:3187
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:498
ip6_neighbor_set_unset_rpc_args_t::is_static
u8 is_static
Definition: ip6_neighbor.c:390
ip6_radv_prefix_t
Definition: ip6_neighbor.c:41
ip6_header_t
Definition: ip6_packet.h:325
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:200
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:392
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:1341
ip6_neighbor_sort
static int ip6_neighbor_sort(void *a1, void *a2)
Definition: ip6_neighbor.c:864
adj_mcast.h
ip6_neighbor_main_t::if_radv_pool_index_by_sw_if_index
u32 * if_radv_pool_index_by_sw_if_index
Definition: ip6_neighbor.c:190
ip6_radv_t::adv_router_lifetime_in_sec
u16 adv_router_lifetime_in_sec
Definition: ip6_neighbor.c:85
vlib_buffer_advance
static void vlib_buffer_advance(vlib_buffer_t *b, word l)
Advance current data pointer by the supplied (signed!) amount.
Definition: buffer.h:208
adj_mcast_update_rewrite
void adj_mcast_update_rewrite(adj_index_t adj_index, u8 *rewrite, u8 offset, u32 mask)
adj_mcast_update_rewrite
Definition: adj_mcast.c:102
vnet_sw_interface_t::hw_if_index
u32 hw_if_index
Definition: interface.h:609
VLIB_NODE_FLAG_TRACE
#define VLIB_NODE_FLAG_TRACE
Definition: node.h:259
ip6_radv_prefix_t::deprecated_prefix_flag
int deprecated_prefix_flag
Definition: ip6_neighbor.c:57
ip6_multicast_link_local_group_id_t
ip6_multicast_link_local_group_id_t
Definition: ip6_packet.h:137
ethernet_interface
Definition: ethernet.h:115
ip6_add_del_interface_address_callback_t
Definition: ip6.h:100
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:665
IP6_NEIGHBOR_FLAG_NO_FIB_ENTRY
Definition: ip6_neighbor.h:35
ip6_neighbor_main_t::pending_resolutions_by_address
mhash_t pending_resolutions_by_address
Definition: ip6_neighbor.c:177
icmp6_neighbor_solicitation
static uword icmp6_neighbor_solicitation(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: ip6_neighbor.c:2644
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:550
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:188
uword
u64 uword
Definition: types.h:112
vlib_add_trace
static void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
Definition: trace_funcs.h:55
clib_error_t
Definition: clib_error.h:21
unformat_parse_error
#define unformat_parse_error(input)
Definition: format.h:267
ip6_header_t::ip_version_traffic_class_and_flow_label
u32 ip_version_traffic_class_and_flow_label
Definition: ip6_packet.h:328
ICMP6_NEIGHBOR_SOLICITATION_NEXT_DROP
Definition: ip6_neighbor.c:1019
ethernet_ndp_change_mac
void ethernet_ndp_change_mac(u32 sw_if_index)
Definition: ip6_neighbor.c:4255
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:1359
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:2427
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:3782
ip6_neighbor_send_mldpv2_report
static void ip6_neighbor_send_mldpv2_report(u32 sw_if_index)
Definition: ip6_neighbor.c:2275
u16
unsigned short u16
Definition: types.h:57
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:2636
IP6_NEIGHBOR_FLAG_STATIC
Definition: ip6_neighbor.h:33
ip6_header_t::payload_length
u16 payload_length
Definition: ip6_packet.h:332
vlib_process_get_event_data
static void * vlib_process_get_event_data(vlib_main_t *vm, uword *return_event_type_opaque)
Definition: node_funcs.h: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:851
ethernet_get_interface
ethernet_interface_t * ethernet_get_interface(ethernet_main_t *em, u32 hw_if_index)
Definition: interface.c:700
ip6_set_solicited_node_multicast_address
static void ip6_set_solicited_node_multicast_address(ip6_address_t *a, u32 id)
Definition: ip6_packet.h:168
FIB_NODE_INDEX_INVALID
#define FIB_NODE_INDEX_INVALID
Definition: fib_types.h:30
ip6_neighbor_t::key
ip6_neighbor_key_t key
Definition: ip6_neighbor.h:40
ip6_address_is_link_local_unicast
static uword ip6_address_is_link_local_unicast(ip6_address_t *a)
Definition: ip6_packet.h:296
elog_string
u32 elog_string(elog_main_t *em, char *fmt,...)
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:803
vec_len
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
Definition: vec_bootstrap.h:142
f64
double f64
Definition: types.h:142
u8
unsigned char u8
Definition: types.h:56
ip_adjacency_t_::lookup_next_index
ip_lookup_next_t lookup_next_index
Next hop after ip4-lookup.
Definition: adj.h:189
icmp6_input_trace_t
Definition: icmp6.h:59
vlib_main_t
Definition: main.h:59
vec_sort_with_function
#define vec_sort_with_function(vec, f)
Sort a vector using the supplied element comparison function.
Definition: vec.h:956
unformat_free
static void unformat_free(unformat_input_t *i)
Definition: format.h:161
ip6_neighbor_ra_config
int ip6_neighbor_ra_config(vlib_main_t *vm, u32 sw_if_index, u8 suppress, u8 managed, u8 other, u8 ll_option, u8 send_unicast, u8 cease, u8 use_lifetime, u32 lifetime, u32 initial_count, u32 initial_interval, u32 max_interval, u32 min_interval, u8 is_no)
Definition: ip6_neighbor.c:2699
vlib_node_t
Definition: node.h:215
ip6_neighbor_add_del_interface_address
static void ip6_neighbor_add_del_interface_address(ip6_main_t *im, uword opaque, u32 sw_if_index, ip6_address_t *address, u32 address_length, u32 if_address_index, u32 is_delete)
callback when an interface address is added or deleted
Definition: ip6_neighbor.c:3829
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:112
vlib_cli_command_t
Definition: cli.h:91
ethernet_build_rewrite
u8 * ethernet_build_rewrite(vnet_main_t *vnm, u32 sw_if_index, vnet_link_t link_type, const void *dst_address)
build a rewrite string to use for sending packets of type &#39;link_type&#39; to &#39;dst_address&#39; ...
Definition: interface.c:79
l2input_main_t::bd_configs
l2_bridge_domain_t * bd_configs
Definition: l2_input.h:69
ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP
#define ICMP6_ROUTER_DISCOVERY_FLAG_ADDRESS_CONFIG_VIA_DHCP
ip6_radv_prefix_t::decrement_lifetime_flag
int decrement_lifetime_flag
Definition: ip6_neighbor.c:58
hash_get_mem
#define hash_get_mem(h, key)
Definition: hash.h:268
ip6_neighbor_set_unset_rpc_args_t::addr
ip6_address_t addr
Definition: ip6_neighbor.c:394
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:2681
vnet_buffer
#define vnet_buffer(b)
Definition: buffer.h:326
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:321
ip6_radv_t::initial_adverts_interval
f64 initial_adverts_interval
Definition: ip6_neighbor.c:147
random_u32
static u32 random_u32(u32 *seed)
32-bit random number generator
Definition: random.h:69
format_unformat_error
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
VLIB_REGISTER_NODE
#define VLIB_REGISTER_NODE(x,...)
Definition: node.h:143
vnet_sw_interface_t::type
vnet_sw_interface_type_t type
Definition: interface.h:571
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:204
vnet_hw_interface_t::output_node_index
u32 output_node_index
Definition: interface.h:431
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
vec_foreach
#define vec_foreach(var, vec)
Vector iterator.
Definition: vec_bootstrap.h:184
ip6_address_is_unspecified
static uword ip6_address_is_unspecified(ip6_address_t *a)
Definition: ip6_packet.h:277
ip6_ethernet_update_adjacency
void ip6_ethernet_update_adjacency(vnet_main_t *vnm, u32 sw_if_index, u32 ai)
Definition: ip6_neighbor.c:558
ip6_neighbor_t
Definition: ip6_neighbor.h:38
vlib_node_runtime_t::flags
u16 flags
Copy of main node flags.
Definition: node.h:450
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:467
ip6_multicast_ethernet_address
static void ip6_multicast_ethernet_address(u8 *ethernet_address, u32 group_id)
Definition: ip6_packet.h:197
addr
vhost_vring_addr_t addr
Definition: vhost-user.h:83
ip6_mldp_group_t::type
u8 type
Definition: ip6_neighbor.c:71
ip6_radv_t::initial_adverts_sent
u32 initial_adverts_sent
Definition: ip6_neighbor.c:148
ip_interface_address_get_address
static void * ip_interface_address_get_address(ip_lookup_main_t *lm, ip_interface_address_t *a)
Definition: lookup.h:172
ip6_nd_find
static ip6_neighbor_t * ip6_nd_find(u32 sw_if_index, const ip6_address_t *addr)
Definition: ip6_neighbor.c:521
ip6_neighbor_main_t::mac_changes_by_address
mhash_t mac_changes_by_address
Definition: ip6_neighbor.c:181
ip6_link_local_address_from_ethernet_address
static void ip6_link_local_address_from_ethernet_address(ip6_address_t *a, u8 *ethernet_address)
Definition: ip6_packet.h:180
ip6_nd_mk_complete_walk
static adj_walk_rc_t ip6_nd_mk_complete_walk(adj_index_t ai, void *ctx)
Definition: ip6_neighbor.c:540
MAX_INITIAL_RTR_ADVERT_INTERVAL
#define MAX_INITIAL_RTR_ADVERT_INTERVAL
Definition: ip6_neighbor.c:129
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:481
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:75
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:2938
ip6_radv_t::max_rtr_default_lifetime
f64 max_rtr_default_lifetime
Definition: ip6_neighbor.c:139
ip6_icmp_router_advertisement_node
static vlib_node_registration_t ip6_icmp_router_advertisement_node
(constructor) VLIB_REGISTER_NODE (ip6_icmp_router_advertisement_node)
Definition: ip6_neighbor.c:2620
ip6_neighbor_main_t::neighbor_pool
ip6_neighbor_t * neighbor_pool
Definition: ip6_neighbor.c:186
adj_nbr_update_rewrite
void adj_nbr_update_rewrite(adj_index_t adj_index, adj_nbr_rewrite_flag_t flags, u8 *rewrite)
adj_nbr_update_rewrite
Definition: adj_nbr.c:291
vlib_cli_output
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:680
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
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:1752
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:219
ip6_neighbor_main_t::mac_changes
pending_resolution_t * mac_changes
Definition: ip6_neighbor.c:182
ip6_radv_t::seed
u32 seed
Definition: ip6_neighbor.c:117
ip6_header_t::dst_address
ip6_address_t dst_address
Definition: ip6_packet.h:341
ip6_interface_enabled
int ip6_interface_enabled(vlib_main_t *vm, u32 sw_if_index)
Definition: ip6_neighbor.c:3420
unformat_check_input
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:169
ip6_set_reserved_multicast_address
static void ip6_set_reserved_multicast_address(ip6_address_t *a, ip6_multicast_address_scope_t scope, u16 id)
Definition: ip6_packet.h:158
ip6_icmp_neighbor_discovery_event_data_t::add_del_swindex
u32 add_del_swindex
Definition: ip6_neighbor.c:211
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, 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:505
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
vnet_hw_interface_t::sw_if_index
u32 sw_if_index
Definition: interface.h:445
ip6_icmp_neighbor_discovery_event_data_t
Definition: ip6_neighbor.c:209
ip6_set_neighbor_limit
clib_error_t * ip6_set_neighbor_limit(u32 neighbor_limit)
Definition: ip6_neighbor.c:3900
ICMP6_NEIGHBOR_SOLICITATION_NEXT_REPLY
Definition: ip6_neighbor.c:1020
format_icmp6_input_trace
format_function_t format_icmp6_input_trace
Definition: icmp6.h:64
ip6_radv_prefix_t::prefix_len
u8 prefix_len
Definition: ip6_neighbor.c:45
adj_nbr_walk_nh6
void adj_nbr_walk_nh6(u32 sw_if_index, const ip6_address_t *addr, adj_walk_cb_t cb, void *ctx)
Walk adjacencies on a link with a given v6 next-hop.
Definition: adj_nbr.c:643
pool_elts
static uword pool_elts(void *v)
Number of active elements in a pool.
Definition: pool.h:128