dhcp6_pd_client_cp.c revision d318a996
1/*
2 * Copyright (c) 2018 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include <vnet/vnet.h>
17#include <vlibmemory/api.h>
18#include <dhcp/dhcp6_packet.h>
19#include <dhcp/dhcp6_pd_client_dp.h>
20#include <vnet/ip/ip.h>
21#include <vnet/ip/ip6.h>
22#include <vnet/ip/ip6_neighbor.h>
23#include <float.h>
24#include <math.h>
25#include <string.h>
26#include <vnet/ip/ip_types_api.h>
27
28typedef struct
29{
30  u32 prefix_group_index;
31  uword opaque_data;		// used by prefix publisher
32  ip6_address_t prefix;
33  u8 prefix_length;
34  u32 preferred_lt;
35  u32 valid_lt;
36  f64 due_time;
37} prefix_info_t;
38
39typedef struct
40{
41  u8 enabled;
42  u32 prefix_group_index;
43  u32 server_index;
44  u32 T1;
45  u32 T2;
46  f64 T1_due_time;
47  f64 T2_due_time;
48  u32 prefix_count;
49  u8 rebinding;
50} client_state_t;
51
52typedef struct
53{
54  client_state_t *client_state_by_sw_if_index;
55  clib_bitmap_t *prefix_ownership_bitmap;
56  u32 n_clients;
57  f64 max_valid_due_time;
58
59  /* convenience */
60  vlib_main_t *vlib_main;
61  vnet_main_t *vnet_main;
62  api_main_t *api_main;
63  u32 node_index;
64} dhcp6_pd_client_cp_main_t;
65
66static dhcp6_pd_client_cp_main_t dhcp6_pd_client_cp_main;
67
68typedef struct
69{
70  prefix_info_t *prefix_pool;
71  const u8 **prefix_group_name_by_index;
72} ip6_prefix_main_t;
73
74static ip6_prefix_main_t ip6_prefix_main;
75
76typedef struct
77{
78  /* config */
79  u32 sw_if_index;
80  u32 prefix_group_index;
81  ip6_address_t address;
82  u8 prefix_length;
83
84  /* state */
85  u8 configured_in_data_plane;
86} ip6_address_info_t;
87
88typedef struct
89{
90  ip6_address_info_t *addresses;
91  u32 *active_prefix_index_by_prefix_group_index;
92} ip6_address_with_prefix_main_t;
93
94static ip6_address_with_prefix_main_t ip6_address_with_prefix_main;
95
96enum
97{
98  DHCPV6_PD_EVENT_INTERRUPT,
99  DHCPV6_PD_EVENT_DISABLE,
100};
101
102static_always_inline u32
103active_prefix_index_by_prefix_group_index_get (u32 prefix_group_index)
104{
105  ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main;
106
107  if (prefix_group_index >=
108      vec_len (apm->active_prefix_index_by_prefix_group_index))
109    return ~0;
110
111  return apm->active_prefix_index_by_prefix_group_index[prefix_group_index];
112}
113
114static_always_inline void
115active_prefix_index_by_prefix_group_index_set (u32 prefix_group_index,
116					       u32 prefix_index)
117{
118  ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main;
119  static const u32 empty = ~0;
120
121  ASSERT (prefix_group_index != ~0);
122
123  if (prefix_index == ~0
124      && prefix_group_index >=
125      vec_len (apm->active_prefix_index_by_prefix_group_index))
126    return;
127
128  vec_validate_init_empty (apm->active_prefix_index_by_prefix_group_index,
129			   prefix_group_index, empty);
130  apm->active_prefix_index_by_prefix_group_index[prefix_group_index] =
131    prefix_index;
132}
133
134static_always_inline u8
135is_dhcpv6_pd_prefix (prefix_info_t * prefix_info)
136{
137  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
138  ip6_prefix_main_t *pm = &ip6_prefix_main;
139  u32 prefix_index;
140
141  prefix_index = prefix_info - pm->prefix_pool;
142  return clib_bitmap_get (rm->prefix_ownership_bitmap, prefix_index);
143}
144
145static_always_inline void
146set_is_dhcpv6_pd_prefix (prefix_info_t * prefix_info, u8 value)
147{
148  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
149  ip6_prefix_main_t *pm = &ip6_prefix_main;
150  u32 prefix_index;
151
152  prefix_index = prefix_info - pm->prefix_pool;
153  rm->prefix_ownership_bitmap =
154    clib_bitmap_set (rm->prefix_ownership_bitmap, prefix_index, value);
155}
156
157static void
158cp_ip6_address_prefix_add_del_handler (u32 prefix_index, u8 is_add);
159
160static void
161notify_prefix_add_del (u32 prefix_index, u8 is_add)
162{
163  // TODO: use registries
164  cp_ip6_address_prefix_add_del_handler (prefix_index, is_add);
165}
166
167static void
168send_client_message_start_stop (u32 sw_if_index, u32 server_index,
169				u8 msg_type, prefix_info_t * prefix_list,
170				u8 start)
171{
172  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
173  dhcp6_pd_send_client_message_params_t params = { 0, };
174  dhcp6_pd_send_client_message_params_prefix_t *prefixes = 0, *pref;
175  u32 i;
176
177  ASSERT (sw_if_index < vec_len (rm->client_state_by_sw_if_index) &&
178	  rm->client_state_by_sw_if_index[sw_if_index].enabled);
179  client_state_t *client_state =
180    &rm->client_state_by_sw_if_index[sw_if_index];
181
182  params.sw_if_index = sw_if_index;
183  params.server_index = server_index;
184  params.msg_type = msg_type;
185  if (start)
186    {
187      if (msg_type == DHCPV6_MSG_SOLICIT)
188	{
189	  params.irt = 1;
190	  params.mrt = 120;
191	}
192      else if (msg_type == DHCPV6_MSG_REQUEST)
193	{
194	  params.irt = 1;
195	  params.mrt = 30;
196	  params.mrc = 10;
197	}
198      else if (msg_type == DHCPV6_MSG_RENEW)
199	{
200	  params.irt = 10;
201	  params.mrt = 600;
202	  f64 current_time = vlib_time_now (rm->vlib_main);
203	  i32 diff_time = client_state->T2 - current_time;
204	  if (diff_time < 0)
205	    diff_time = 0;
206	  params.mrd = diff_time;
207	}
208      else if (msg_type == DHCPV6_MSG_REBIND)
209	{
210	  params.irt = 10;
211	  params.mrt = 600;
212	  f64 current_time = vlib_time_now (rm->vlib_main);
213	  i32 diff_time = rm->max_valid_due_time - current_time;
214	  if (diff_time < 0)
215	    diff_time = 0;
216	  params.mrd = diff_time;
217	}
218      else if (msg_type == DHCPV6_MSG_RELEASE)
219	{
220	  params.mrc = 1;
221	}
222    }
223
224  params.T1 = 0;
225  params.T2 = 0;
226  if (vec_len (prefix_list) != 0)
227    vec_validate (prefixes, vec_len (prefix_list) - 1);
228  for (i = 0; i < vec_len (prefix_list); i++)
229    {
230      prefix_info_t *prefix = &prefix_list[i];
231      pref = &prefixes[i];
232      pref->valid_lt = prefix->valid_lt;
233      pref->preferred_lt = prefix->preferred_lt;
234      pref->prefix = prefix->prefix;
235      pref->prefix_length = prefix->prefix_length;
236    }
237  params.prefixes = prefixes;
238
239  dhcp6_pd_send_client_message (rm->vlib_main, sw_if_index, !start, &params);
240
241  vec_free (params.prefixes);
242}
243
244static void interrupt_process (void);
245
246static u32
247ip6_enable (u32 sw_if_index)
248{
249  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
250  clib_error_t *rv;
251
252  rv = enable_ip6_interface (rm->vlib_main, sw_if_index);
253
254  return rv != 0;
255}
256
257static u8
258ip6_prefixes_equal (ip6_address_t * prefix1, ip6_address_t * prefix2, u8 len)
259{
260  if (len >= 64)
261    {
262      if (prefix1->as_u64[0] != prefix2->as_u64[0])
263	return 0;
264      if (len == 64)
265	return 1;
266      return clib_net_to_host_u64 (prefix1->as_u64[1]) >> (128 - len) ==
267	clib_net_to_host_u64 (prefix2->as_u64[1]) >> (128 - len);
268    }
269  return clib_net_to_host_u64 (prefix1->as_u64[0]) >> (64 - len) ==
270    clib_net_to_host_u64 (prefix2->as_u64[0]) >> (64 - len);
271}
272
273static clib_error_t *
274dhcp6_pd_reply_event_handler (vl_api_dhcp6_pd_reply_event_t * mp)
275{
276  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
277  ip6_prefix_main_t *pm = &ip6_prefix_main;
278  vlib_main_t *vm = rm->vlib_main;
279  client_state_t *client_state;
280  ip6_address_t *prefix;
281  u32 sw_if_index;
282  u32 n_prefixes;
283  vl_api_dhcp6_pd_prefix_info_t *api_prefix;
284  u32 inner_status_code;
285  u32 status_code;
286  u32 server_index;
287  f64 current_time;
288  clib_error_t *error = 0;
289  u32 i;
290
291  current_time = vlib_time_now (vm);
292
293  sw_if_index = ntohl (mp->sw_if_index);
294
295  if (sw_if_index >= vec_len (rm->client_state_by_sw_if_index))
296    return 0;
297
298  client_state = &rm->client_state_by_sw_if_index[sw_if_index];
299
300  if (!client_state->enabled)
301    return 0;
302
303  server_index = ntohl (mp->server_index);
304
305  n_prefixes = ntohl (mp->n_prefixes);
306
307  inner_status_code = ntohs (mp->inner_status_code);
308  status_code = ntohs (mp->status_code);
309
310  if (mp->msg_type == DHCPV6_MSG_API_ADVERTISE
311      && client_state->server_index == ~0)
312    {
313      prefix_info_t *prefix_list = 0, *prefix_info;
314      u8 prefix_length;
315
316      if (inner_status_code == DHCPV6_STATUS_NOPREFIX_AVAIL)
317	{
318	  clib_warning
319	    ("Advertise message arrived with NoPrefixAvail status code");
320	  return 0;
321	}
322
323      if (n_prefixes > 0)
324	vec_validate (prefix_list, n_prefixes - 1);
325      for (i = 0; i < n_prefixes; i++)
326	{
327	  api_prefix = &mp->prefixes[i];
328	  prefix = (ip6_address_t *) api_prefix->prefix.address;
329	  prefix_length = api_prefix->prefix.len;
330
331	  prefix_info = &prefix_list[i];
332	  prefix_info->prefix = *prefix;
333	  prefix_info->prefix_length = prefix_length;
334	  prefix_info->preferred_lt = 0;
335	  prefix_info->valid_lt = 0;
336	}
337
338      client_state->server_index = server_index;
339
340      send_client_message_start_stop (sw_if_index, server_index,
341				      DHCPV6_MSG_REQUEST, prefix_list, 1);
342      vec_free (prefix_list);
343    }
344
345  if (mp->msg_type != DHCPV6_MSG_API_REPLY)
346    return 0;
347
348  if (!client_state->rebinding && client_state->server_index != server_index)
349    {
350      clib_warning ("Reply message arrived with Server ID different "
351		    "from that in Request or Renew message");
352      return 0;
353    }
354
355  if (inner_status_code == DHCPV6_STATUS_NOPREFIX_AVAIL)
356    {
357      clib_warning ("Reply message arrived with NoPrefixAvail status code");
358      if (n_prefixes > 0)
359	{
360	  clib_warning
361	    ("Invalid Reply message arrived: It contains NoPrefixAvail "
362	     "status code but also contains prefixes");
363	  return 0;
364	}
365    }
366
367  if (status_code == DHCPV6_STATUS_UNSPEC_FAIL)
368    {
369      clib_warning ("Reply message arrived with UnspecFail status code");
370      return 0;
371    }
372
373  send_client_message_start_stop (sw_if_index, server_index,
374				  mp->msg_type, 0, 0);
375
376  for (i = 0; i < n_prefixes; i++)
377    {
378      prefix_info_t *prefix_info = 0;
379      u8 prefix_length;
380      u32 valid_time;
381      u32 preferred_time;
382
383      api_prefix = &mp->prefixes[i];
384
385      prefix = (ip6_address_t *) api_prefix->prefix.address;
386      prefix_length = api_prefix->prefix.len;
387
388      if (ip6_address_is_link_local_unicast (prefix))
389	continue;
390
391      valid_time = ntohl (api_prefix->valid_time);
392      preferred_time = ntohl (api_prefix->preferred_time);
393      prefix_length = api_prefix->prefix.len;
394
395      if (preferred_time > valid_time)
396	continue;
397
398      u8 address_prefix_present = 0;
399      /* *INDENT-OFF* */
400      pool_foreach (prefix_info, pm->prefix_pool,
401      ({
402        if (is_dhcpv6_pd_prefix (prefix_info) &&
403            prefix_info->opaque_data == sw_if_index &&
404            prefix_info->prefix_length == prefix_length &&
405            ip6_prefixes_equal (&prefix_info->prefix, prefix, prefix_length))
406          {
407            address_prefix_present = 1;
408            goto prefix_pool_foreach_out;
409          }
410      }));
411      /* *INDENT-ON* */
412    prefix_pool_foreach_out:
413
414      if (address_prefix_present)
415	{
416	  /*
417	   * We found the prefix. Move along.
418	   * Don't touch the prefix timers!
419	   * If we happen to receive a renew reply just before we
420	   * would have sent a solicit to renew the prefix delegation,
421	   * we forget to renew the delegation. Worse luck, we start
422	   * sending router advertisements with a valid time of zero,
423	   * and the wheels fall off...
424	   */
425	  continue;
426	}
427
428      if (valid_time == 0)
429	continue;
430
431      pool_get (pm->prefix_pool, prefix_info);
432      prefix_info->prefix_group_index = client_state->prefix_group_index;
433      set_is_dhcpv6_pd_prefix (prefix_info, 1);
434      prefix_info->opaque_data = sw_if_index;
435      prefix_info->prefix_length = prefix_length;
436      prefix_info->prefix = *prefix;
437      prefix_info->preferred_lt = preferred_time;
438      prefix_info->valid_lt = valid_time;
439      prefix_info->due_time = current_time + valid_time;
440      if (prefix_info->due_time > rm->max_valid_due_time)
441	rm->max_valid_due_time = prefix_info->due_time;
442      rm->client_state_by_sw_if_index[sw_if_index].prefix_count++;
443
444      u32 prefix_index = prefix_info - pm->prefix_pool;
445      notify_prefix_add_del (prefix_index, 1);
446    }
447
448  client_state->server_index = server_index;
449  client_state->T1 = ntohl (mp->T1);
450  client_state->T2 = ntohl (mp->T2);
451  if (client_state->T1 != 0)
452    client_state->T1_due_time = current_time + client_state->T1;
453  if (client_state->T2 != 0)
454    client_state->T2_due_time = current_time + client_state->T2;
455  client_state->rebinding = 0;
456
457  interrupt_process ();
458
459  return error;
460}
461
462static prefix_info_t *
463create_prefix_list (u32 sw_if_index)
464{
465  ip6_prefix_main_t *pm = &ip6_prefix_main;
466  prefix_info_t *prefix_info, *prefix_list = 0;;
467
468  /* *INDENT-OFF* */
469  pool_foreach (prefix_info, pm->prefix_pool,
470  ({
471    if (is_dhcpv6_pd_prefix (prefix_info) &&
472        prefix_info->opaque_data == sw_if_index)
473      {
474        u32 pos = vec_len (prefix_list);
475        vec_validate (prefix_list, pos);
476        clib_memcpy (&prefix_list[pos], prefix_info, sizeof (*prefix_info));
477      }
478  }));
479  /* *INDENT-ON* */
480
481  return prefix_list;
482}
483
484VNET_DHCP6_PD_REPLY_EVENT_FUNCTION (dhcp6_pd_reply_event_handler);
485
486static uword
487dhcp6_pd_client_cp_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
488			    vlib_frame_t * f)
489{
490  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
491  ip6_prefix_main_t *pm = &ip6_prefix_main;
492  prefix_info_t *prefix_info;
493  client_state_t *client_state;
494  f64 sleep_time = 1e9;
495  f64 current_time;
496  f64 due_time;
497  uword event_type;
498  uword *event_data = 0;
499  int i;
500
501  while (1)
502    {
503      vlib_process_wait_for_event_or_clock (vm, sleep_time);
504      event_type = vlib_process_get_events (vm, &event_data);
505      vec_reset_length (event_data);
506
507      if (event_type == DHCPV6_PD_EVENT_DISABLE)
508	{
509	  vlib_node_set_state (vm, rm->node_index, VLIB_NODE_STATE_DISABLED);
510	  sleep_time = 1e9;
511	  continue;
512	}
513
514      current_time = vlib_time_now (vm);
515      do
516	{
517	  due_time = current_time + 1e9;
518          /* *INDENT-OFF* */
519          pool_foreach (prefix_info, pm->prefix_pool,
520          ({
521            if (is_dhcpv6_pd_prefix (prefix_info))
522              {
523                if (prefix_info->due_time > current_time)
524                  {
525                    if (prefix_info->due_time < due_time)
526                      due_time = prefix_info->due_time;
527                  }
528                else
529                  {
530                    u32 prefix_index = prefix_info - pm->prefix_pool;
531                    notify_prefix_add_del (prefix_index, 0);
532                    u32 sw_if_index = prefix_info->opaque_data;
533                    set_is_dhcpv6_pd_prefix (prefix_info, 0);
534                    pool_put (pm->prefix_pool, prefix_info);
535                    client_state = &rm->client_state_by_sw_if_index[sw_if_index];
536                    if (--client_state->prefix_count == 0)
537                      {
538                        client_state->rebinding = 0;
539                        client_state->server_index = ~0;
540                        send_client_message_start_stop (sw_if_index, ~0,
541                                                        DHCPV6_MSG_SOLICIT,
542                                                        0, 1);
543                      }
544                  }
545              }
546	  }));
547	  /* *INDENT-ON* */
548	  for (i = 0; i < vec_len (rm->client_state_by_sw_if_index); i++)
549	    {
550	      client_state_t *cs = &rm->client_state_by_sw_if_index[i];
551	      if (cs->enabled && cs->server_index != ~0)
552		{
553		  if (cs->T2_due_time > current_time)
554		    {
555		      if (cs->T2_due_time < due_time)
556			due_time = cs->T2_due_time;
557		      if (cs->T1_due_time > current_time)
558			{
559			  if (cs->T1_due_time < due_time)
560			    due_time = cs->T1_due_time;
561			}
562		      else
563			{
564			  cs->T1_due_time = DBL_MAX;
565			  prefix_info_t *prefix_list;
566			  prefix_list = create_prefix_list (i);
567			  send_client_message_start_stop (i, cs->server_index,
568							  DHCPV6_MSG_RENEW,
569							  prefix_list, 1);
570			  vec_free (prefix_list);
571			}
572		    }
573		  else
574		    {
575		      cs->T2_due_time = DBL_MAX;
576		      prefix_info_t *prefix_list;
577		      prefix_list = create_prefix_list (i);
578		      cs->rebinding = 1;
579		      send_client_message_start_stop (i, ~0,
580						      DHCPV6_MSG_REBIND,
581						      prefix_list, 1);
582		      vec_free (prefix_list);
583		    }
584		}
585	    }
586	  current_time = vlib_time_now (vm);
587	}
588      while (due_time < current_time);
589
590      sleep_time = due_time - current_time;
591    }
592
593  return 0;
594}
595
596/* *INDENT-OFF* */
597VLIB_REGISTER_NODE (dhcp6_pd_client_cp_process_node) = {
598    .function = dhcp6_pd_client_cp_process,
599    .type = VLIB_NODE_TYPE_PROCESS,
600    .name = "dhcp6-pd-client-cp-process",
601};
602/* *INDENT-ON* */
603
604static void
605interrupt_process (void)
606{
607  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
608  vlib_main_t *vm = rm->vlib_main;
609
610  vlib_process_signal_event (vm, dhcp6_pd_client_cp_process_node.index,
611			     DHCPV6_PD_EVENT_INTERRUPT, 0);
612}
613
614static void
615disable_process (void)
616{
617  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
618  vlib_main_t *vm = rm->vlib_main;
619
620  vlib_process_signal_event (vm, dhcp6_pd_client_cp_process_node.index,
621			     DHCPV6_PD_EVENT_DISABLE, 0);
622}
623
624static void
625enable_process (void)
626{
627  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
628  vlib_main_t *vm = rm->vlib_main;
629  vlib_node_t *node;
630
631  node = vec_elt (vm->node_main.nodes, rm->node_index);
632
633  vlib_node_set_state (vm, rm->node_index, VLIB_NODE_STATE_POLLING);
634  vlib_start_process (vm, node->runtime_index);
635}
636
637static u32
638cp_ip6_construct_address (ip6_address_info_t * address_info, u32 prefix_index,
639			  ip6_address_t * r_addr)
640{
641  ip6_prefix_main_t *pm = &ip6_prefix_main;
642  prefix_info_t *prefix;
643  u64 mask, addr0, pref;
644
645  addr0 = clib_net_to_host_u64 (address_info->address.as_u64[0]);
646  prefix = &pm->prefix_pool[prefix_index];
647  if (prefix->prefix_length > 64)
648    {
649      clib_warning ("Prefix length is bigger that 64 bits");
650      return 1;
651    }
652  mask = ((u64) 1 << (64 - prefix->prefix_length)) - 1;
653  addr0 &= mask;
654  pref = clib_host_to_net_u64 (prefix->prefix.as_u64[0]);
655  pref &= ~mask;
656  addr0 |= pref;
657  r_addr->as_u64[0] = clib_host_to_net_u64 (addr0);
658  r_addr->as_u64[1] = address_info->address.as_u64[1];
659
660  return 0;
661}
662
663static void
664cp_ip6_address_add_del_now (ip6_address_info_t * address_info, u8 is_add)
665{
666  vlib_main_t *vm = vlib_get_main ();
667  u32 prefix_index;
668  ip6_address_t addr;
669  clib_error_t *error;
670
671  if (address_info->prefix_group_index != ~0)
672    prefix_index =
673      active_prefix_index_by_prefix_group_index_get
674      (address_info->prefix_group_index);
675  else
676    prefix_index = ~0;
677
678  if (is_add && !address_info->configured_in_data_plane)
679    {
680      if (prefix_index != ~0)
681	{
682	  if (cp_ip6_construct_address (address_info, prefix_index, &addr) !=
683	      0)
684	    return;
685	  error =
686	    ip6_add_del_interface_address (vm, address_info->sw_if_index,
687					   &addr, address_info->prefix_length,
688					   0 /* add */ );
689	  if (error)
690	    clib_warning ("Failed adding IPv6 address: %U",
691			  format_clib_error, error);
692	  else
693	    {
694	      if (CLIB_DEBUG > 0)
695		clib_warning ("Add address %U on %U",
696			      format_ip6_address_and_length,
697			      &addr, address_info->prefix_length,
698			      format_vnet_sw_if_index_name,
699			      vnet_get_main (), address_info->sw_if_index);
700
701	      address_info->configured_in_data_plane = 1;
702	    }
703	}
704      else
705	{
706	  if (address_info->prefix_group_index == ~0)
707	    {
708	      error =
709		ip6_add_del_interface_address (vm, address_info->sw_if_index,
710					       &address_info->address,
711					       address_info->prefix_length,
712					       0 /* add */ );
713	      if (error)
714		clib_warning ("Failed adding IPv6 address: %U",
715			      format_clib_error, error);
716	      else
717		{
718		  if (CLIB_DEBUG > 0)
719		    clib_warning ("Add address %U on %U",
720				  format_ip6_address_and_length,
721				  &addr, address_info->prefix_length,
722				  format_vnet_sw_if_index_name,
723				  vnet_get_main (),
724				  address_info->sw_if_index);
725
726		  address_info->configured_in_data_plane = 1;
727		}
728	    }
729	}
730    }
731  else if (!is_add && address_info->configured_in_data_plane)
732    {
733      if (prefix_index == ~0)
734	{
735	  if (address_info->prefix_group_index == ~0)
736	    {
737	      error =
738		ip6_add_del_interface_address (vm, address_info->sw_if_index,
739					       &address_info->address,
740					       address_info->prefix_length,
741					       1 /* del */ );
742	      if (error)
743		clib_warning ("Failed deleting IPv6 address: %U",
744			      format_clib_error, error);
745	      address_info->configured_in_data_plane = 0;
746	    }
747	  else
748	    clib_warning ("Deleting address with prefix "
749			  "but active prefix index is not set");
750	}
751      else
752	{
753	  if (cp_ip6_construct_address (address_info, prefix_index, &addr) !=
754	      0)
755	    return;
756	  error =
757	    ip6_add_del_interface_address (vm, address_info->sw_if_index,
758					   &addr, address_info->prefix_length,
759					   1 /* del */ );
760	  if (error)
761	    clib_warning ("Failed deleting IPv6 address: %U",
762			  format_clib_error, error);
763	  address_info->configured_in_data_plane = 0;
764	}
765    }
766}
767
768static u32
769cp_ip6_address_find_new_active_prefix (u32 prefix_group_index,
770				       u32 ignore_prefix_index)
771{
772  ip6_prefix_main_t *pm = &ip6_prefix_main;
773  prefix_info_t *prefix_info;
774
775  /* *INDENT-OFF* */
776  pool_foreach (prefix_info, pm->prefix_pool,
777  ({
778    if (prefix_info->prefix_group_index == prefix_group_index &&
779        prefix_info - pm->prefix_pool != ignore_prefix_index)
780        return prefix_info - pm->prefix_pool;
781  }));
782  /* *INDENT-ON* */
783  return ~0;
784}
785
786static void
787cp_ip6_advertise_prefix (prefix_info_t * prefix_info,
788			 ip6_address_info_t * address_info, int enable)
789{
790  vlib_main_t *vm = vlib_get_main ();
791  ip6_main_t *im = &ip6_main;
792  u32 prefix_index;
793  ip6_address_t addr;
794  int rv;
795
796  prefix_index =
797    active_prefix_index_by_prefix_group_index_get
798    (address_info->prefix_group_index);
799
800  if (cp_ip6_construct_address (address_info, prefix_index, &addr) != 0)
801    {
802      clib_warning ("address construction FAIL");
803      return;
804    }
805
806  /* The RA code assumes that host bits are zero, so clear them */
807  addr.as_u64[0] &= im->fib_masks[address_info->prefix_length].as_u64[0];
808  addr.as_u64[1] &= im->fib_masks[address_info->prefix_length].as_u64[1];
809
810  rv = ip6_neighbor_ra_prefix (vm, address_info->sw_if_index,
811			       &addr, address_info->prefix_length,
812			       0 /* use_default */ ,
813			       prefix_info->valid_lt,
814			       prefix_info->preferred_lt,
815			       0 /* no_advertise */ ,
816			       0 /* off_link */ ,
817			       0 /* no_autoconfig */ ,
818			       0 /* no_onlink */ ,
819			       enable == 0 /* is_no */ );
820  if (rv != 0)
821    {
822      clib_warning ("ip6_neighbor_ra_prefix returned %d", rv);
823      return;
824    }
825
826  if (CLIB_DEBUG > 0)
827    clib_warning ("Advertise prefix %U valid lt %u preferred lt %u",
828		  format_ip6_address_and_length, &addr,
829		  address_info->prefix_length, prefix_info->valid_lt,
830		  prefix_info->preferred_lt);
831}
832
833
834static void
835cp_ip6_address_prefix_add_del_handler (u32 prefix_index, u8 is_add)
836{
837  ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main;
838  ip6_prefix_main_t *pm = &ip6_prefix_main;
839  ip6_address_info_t *address_info;
840  prefix_info_t *prefix;
841  u32 new_prefix_index;
842  u32 prefix_group_index;
843  u32 i;
844
845  prefix = &pm->prefix_pool[prefix_index];
846  prefix_group_index = prefix->prefix_group_index;
847
848  if (is_add)
849    {
850      if (active_prefix_index_by_prefix_group_index_get
851	  (prefix_group_index) == ~0)
852	{
853	  active_prefix_index_by_prefix_group_index_set
854	    (prefix_group_index, prefix_index);
855	  for (i = 0; i < vec_len (apm->addresses); i++)
856	    {
857	      address_info = &apm->addresses[i];
858	      if (address_info->prefix_group_index == prefix_group_index)
859		{
860		  /* Add the prefix to the interface */
861		  cp_ip6_address_add_del_now (address_info, 1 /* add */ );
862		  /* And advertise the prefix on the interface */
863		  cp_ip6_advertise_prefix (prefix, address_info,
864					   1 /* enable */ );
865		}
866	    }
867	}
868    }
869  else
870    {
871      if (active_prefix_index_by_prefix_group_index_get
872	  (prefix_group_index) == prefix_index)
873	{
874	  for (i = 0; i < vec_len (apm->addresses); i++)
875	    {
876	      address_info = &apm->addresses[i];
877	      if (address_info->prefix_group_index == prefix_group_index)
878		{
879		  cp_ip6_advertise_prefix (prefix, address_info,
880					   0 /* enable */ );
881		  cp_ip6_address_add_del_now (address_info, 0 /* del */ );
882		}
883	    }
884	  active_prefix_index_by_prefix_group_index_set
885	    (prefix_group_index, ~0);
886	  new_prefix_index =
887	    cp_ip6_address_find_new_active_prefix (prefix_group_index,
888						   prefix_index);
889	  if (new_prefix_index != ~0)
890	    {
891	      active_prefix_index_by_prefix_group_index_set
892		(prefix_group_index, new_prefix_index);
893	      for (i = 0; i < vec_len (apm->addresses); i++)
894		{
895		  address_info = &apm->addresses[i];
896		  if (address_info->prefix_group_index == prefix_group_index)
897		    {
898		      cp_ip6_address_add_del_now (address_info, 1 /* add */ );
899		      cp_ip6_advertise_prefix (prefix, address_info,
900					       1 /* enable */ );
901		    }
902		}
903	    }
904	}
905    }
906}
907
908static u32
909prefix_group_find_or_create (const u8 * name, u8 create)
910{
911  ip6_prefix_main_t *pm = &ip6_prefix_main;
912  u32 free_index = ~0;
913  u8 *name_dup;
914  u32 i;
915
916  for (i = 0; i < vec_len (pm->prefix_group_name_by_index); i++)
917    {
918      if (pm->prefix_group_name_by_index[i] == 0)
919	free_index = i;
920      else if (0 ==
921	       strcmp ((const char *) pm->prefix_group_name_by_index[i],
922		       (const char *) name))
923	return i;
924    }
925  if (!create)
926    return ~0;
927  name_dup = (u8 *) strdup ((const char *) name);
928  if (free_index != ~0)
929    {
930      pm->prefix_group_name_by_index[free_index] = name_dup;
931      return free_index;
932    }
933  else
934    {
935      vec_add1 (pm->prefix_group_name_by_index, name_dup);
936      return vec_len (pm->prefix_group_name_by_index) - 1;
937    }
938}
939
940int
941dhcp6_cp_ip6_address_add_del (u32 sw_if_index, const u8 * prefix_group,
942			      ip6_address_t address, u8 prefix_length,
943			      u8 is_add)
944{
945
946  ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main;
947  vnet_main_t *vnm = vnet_get_main ();
948  ip6_address_info_t *address_info;
949  u32 prefix_group_index;
950  u32 n;
951
952  if (!vnet_sw_interface_is_api_valid (vnm, sw_if_index))
953    {
954      clib_warning ("Invalid sw_if_index");
955      return VNET_API_ERROR_INVALID_VALUE;
956    }
957
958  if (prefix_group != 0 && prefix_group[0] != '\0')
959    {
960      if (strnlen ((const char *) prefix_group, 64) == 64)
961	return VNET_API_ERROR_INVALID_VALUE;
962
963      prefix_group_index = prefix_group_find_or_create (prefix_group, 1);
964    }
965  else
966    prefix_group_index = ~0;
967
968  n = vec_len (apm->addresses);
969
970  vec_foreach (address_info, apm->addresses)
971  {
972    if (address_info->sw_if_index == sw_if_index &&
973	address_info->prefix_group_index == prefix_group_index &&
974	address_info->prefix_length == prefix_length &&
975	0 == memcmp (&address_info->address, &address, 16))
976      {
977	if (is_add)
978	  return VNET_API_ERROR_DUPLICATE_IF_ADDRESS;
979	cp_ip6_address_add_del_now (address_info, 0 /* del */ );
980	*address_info = apm->addresses[n - 1];
981	_vec_len (apm->addresses) = n - 1;
982	return 0;
983      }
984  }
985
986  if (!is_add)
987    return VNET_API_ERROR_ADDRESS_NOT_FOUND_FOR_INTERFACE;
988
989  vec_validate (apm->addresses, n);
990  address_info = &apm->addresses[n];
991  address_info->sw_if_index = sw_if_index;
992  address_info->prefix_group_index = prefix_group_index;
993  address_info->address = address;
994  address_info->prefix_length = prefix_length;
995  cp_ip6_address_add_del_now (address_info, 1 /* add */ );
996
997  return 0;
998}
999
1000static clib_error_t *
1001cp_ip6_address_add_del_command_function (vlib_main_t * vm,
1002					 unformat_input_t * input,
1003					 vlib_cli_command_t * cmd)
1004{
1005  vnet_main_t *vnm = vnet_get_main ();
1006  clib_error_t *error = 0;
1007  u32 sw_if_index = ~0;
1008  u8 *prefix_group = 0;
1009  ip6_address_t address;
1010  u32 prefix_length;
1011  u8 address_set = 0;
1012  u8 add = 1;
1013  unformat_input_t _line_input, *line_input = &_line_input;
1014
1015  if (!unformat_user (input, unformat_line_input, line_input))
1016    return 0;
1017
1018  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1019    {
1020      if (unformat
1021	  (line_input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index));
1022      else if (unformat (line_input, "prefix group %s", &prefix_group));
1023      else
1024	if (unformat (line_input, "%U/%d", unformat_ip6_address,
1025		      &address, &prefix_length))
1026	address_set = 1;
1027      else if (unformat (line_input, "del"))
1028	add = 0;
1029      else
1030	{
1031	  error = clib_error_return (0, "unexpected input `%U'",
1032				     format_unformat_error, line_input);
1033	  unformat_free (line_input);
1034	  goto done;
1035	}
1036    }
1037
1038  unformat_free (line_input);
1039
1040  if (sw_if_index == ~0)
1041    error = clib_error_return (0, "Missing sw_if_index");
1042  else if (address_set == 0)
1043    error = clib_error_return (0, "Missing address");
1044  else
1045    {
1046      if (dhcp6_cp_ip6_address_add_del
1047	  (sw_if_index, prefix_group, address, prefix_length, add) != 0)
1048	error = clib_error_return (0, "Error adding or removing address");
1049    }
1050
1051done:
1052  return error;
1053}
1054
1055/*?
1056 * This command is used to add/delete IPv6 address
1057 * potentially using available prefix from specified prefix group
1058 *
1059 * @cliexpar
1060 * @parblock
1061 * Example of how to add IPv6 address:
1062 * @cliexcmd{set ip6 address GigabitEthernet2/0/0
1063 *           prefix group my-prefix-group ::7/64}
1064 * Example of how to delete IPv6 address:
1065 * @cliexcmd{set ip6 address GigabitEthernet2/0/0
1066 *           prefix group my-prefix-group ::7/64 del}
1067 * @endparblock
1068?*/
1069/* *INDENT-OFF* */
1070VLIB_CLI_COMMAND (ip6_address_add_del_command, static) = {
1071  .path = "set ip6 address",
1072  .short_help = "set ip6 address <interface> [prefix group <string>] "
1073                "<address> [del]",
1074  .function = cp_ip6_address_add_del_command_function,
1075};
1076/* *INDENT-ON* */
1077
1078static clib_error_t *
1079cp_ip6_addresses_show_command_function (vlib_main_t * vm,
1080					unformat_input_t * input,
1081					vlib_cli_command_t * cmd)
1082{
1083  ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main;
1084  ip6_prefix_main_t *pm = &ip6_prefix_main;
1085  ip6_address_info_t *address_info;
1086  const u8 *prefix_group;
1087  clib_error_t *error = 0;
1088  int i;
1089
1090  for (i = 0; i < vec_len (apm->addresses); i++)
1091    {
1092      address_info = &apm->addresses[i];
1093      if (address_info->prefix_group_index == ~0)
1094	prefix_group = (const u8 *) "NONE";
1095      else
1096	prefix_group =
1097	  pm->prefix_group_name_by_index[address_info->prefix_group_index];
1098      vlib_cli_output (vm,
1099		       "sw_if_index: %u, prefix_group: %s, address: %U/%d",
1100		       address_info->sw_if_index, prefix_group,
1101		       format_ip6_address, &address_info->address,
1102		       address_info->prefix_length);
1103    }
1104
1105  return error;
1106}
1107
1108/* *INDENT-OFF* */
1109VLIB_CLI_COMMAND (ip6_addresses_show_command, static) = {
1110  .path = "show ip6 addresses",
1111  .short_help = "show ip6 addresses",
1112  .function = cp_ip6_addresses_show_command_function,
1113};
1114/* *INDENT-ON* */
1115
1116static clib_error_t *
1117cp_ip6_prefixes_show_command_function (vlib_main_t * vm,
1118				       unformat_input_t * input,
1119				       vlib_cli_command_t * cmd)
1120{
1121  ip6_prefix_main_t *pm = &ip6_prefix_main;
1122  clib_error_t *error = 0;
1123  prefix_info_t *prefix_info;
1124  const u8 *prefix_group;
1125  f64 current_time = vlib_time_now (vm);
1126
1127  /* *INDENT-OFF* */
1128  pool_foreach (prefix_info, pm->prefix_pool,
1129  ({
1130    prefix_group =
1131      pm->prefix_group_name_by_index[prefix_info->prefix_group_index];
1132    vlib_cli_output (vm, "opaque_data: %lu, prefix: %U/%d, prefix group: %s, "
1133                     "preferred lifetime: %u, valid lifetime: %u "
1134                     "(%f remaining)",
1135                     prefix_info->opaque_data, format_ip6_address,
1136                     &prefix_info->prefix, prefix_info->prefix_length,
1137                     prefix_group,
1138                     prefix_info->preferred_lt, prefix_info->valid_lt,
1139                     prefix_info->due_time - current_time);
1140  }));
1141  /* *INDENT-ON* */
1142
1143  return error;
1144}
1145
1146/* *INDENT-OFF* */
1147VLIB_CLI_COMMAND (ip6_prefixes_show_command, static) = {
1148  .path = "show ip6 prefixes",
1149  .short_help = "show ip6 prefixes",
1150  .function = cp_ip6_prefixes_show_command_function,
1151};
1152/* *INDENT-ON* */
1153
1154static clib_error_t *
1155ip6_pd_clients_show_command_function (vlib_main_t * vm,
1156				      unformat_input_t * input,
1157				      vlib_cli_command_t * cmd)
1158{
1159  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
1160  ip6_prefix_main_t *pm = &ip6_prefix_main;
1161  clib_error_t *error = 0;
1162  client_state_t *cs;
1163  f64 current_time = vlib_time_now (vm);
1164  const u8 *prefix_group;
1165  char buf1[256];
1166  char buf2[256];
1167  const char *rebinding;
1168  u32 i;
1169
1170  for (i = 0; i < vec_len (rm->client_state_by_sw_if_index); i++)
1171    {
1172      cs = &rm->client_state_by_sw_if_index[i];
1173      if (cs->enabled)
1174	{
1175	  if (cs->T1_due_time != DBL_MAX && cs->T1_due_time > current_time)
1176	    {
1177	      sprintf (buf1, "%u remaining",
1178		       (u32) round (cs->T1_due_time - current_time));
1179	    }
1180	  else
1181	    sprintf (buf1, "timeout");
1182	  if (cs->T2_due_time != DBL_MAX && cs->T2_due_time > current_time)
1183	    sprintf (buf2, "%u remaining",
1184		     (u32) round (cs->T2_due_time - current_time));
1185	  else
1186	    sprintf (buf2, "timeout");
1187	  if (cs->rebinding)
1188	    rebinding = ", REBINDING";
1189	  else
1190	    rebinding = "";
1191	  prefix_group =
1192	    pm->prefix_group_name_by_index[cs->prefix_group_index];
1193	  if (cs->T1)
1194	    vlib_cli_output (vm,
1195			     "sw_if_index: %u, prefix group: %s, T1: %u (%s), "
1196			     "T2: %u (%s), server index: %d%s", i,
1197			     prefix_group, cs->T1, buf1, cs->T2, buf2,
1198			     cs->server_index, rebinding);
1199	  else
1200	    vlib_cli_output (vm, "sw_if_index: %u, prefix group: %s%s", i,
1201			     prefix_group, rebinding);
1202	}
1203    }
1204
1205  return error;
1206}
1207
1208/* *INDENT-OFF* */
1209VLIB_CLI_COMMAND (ip6_pd_clients_show_command, static) = {
1210  .path = "show ip6 pd clients",
1211  .short_help = "show ip6 pd clients",
1212  .function = ip6_pd_clients_show_command_function,
1213};
1214/* *INDENT-ON* */
1215
1216
1217
1218int
1219dhcp6_pd_client_enable_disable (u32 sw_if_index,
1220				const u8 * prefix_group, u8 enable)
1221{
1222  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
1223  ip6_prefix_main_t *pm = &ip6_prefix_main;
1224  vnet_main_t *vnm = rm->vnet_main;
1225  client_state_t *client_state;
1226  static client_state_t empty_config = {
1227    0
1228  };
1229  prefix_info_t *prefix_info;
1230  prefix_info_t *prefix_list = 0;
1231  u32 prefix_group_index;
1232
1233  if (!vnet_sw_interface_is_api_valid (vnm, sw_if_index))
1234    {
1235      clib_warning ("Invalid sw_if_index");
1236      return VNET_API_ERROR_INVALID_VALUE;
1237    }
1238
1239  vec_validate_init_empty (rm->client_state_by_sw_if_index, sw_if_index,
1240			   empty_config);
1241  client_state = &rm->client_state_by_sw_if_index[sw_if_index];
1242
1243  u8 old_enabled = client_state->enabled;
1244
1245  if (enable)
1246    {
1247      if (strnlen ((const char *) prefix_group, 64) == 64
1248	  || prefix_group[0] == '\0')
1249	return VNET_API_ERROR_INVALID_VALUE;
1250      prefix_group_index =
1251	prefix_group_find_or_create (prefix_group, !old_enabled);
1252      if (old_enabled
1253	  && prefix_group_index != client_state->prefix_group_index)
1254	return VNET_API_ERROR_INVALID_VALUE;
1255    }
1256
1257  if (!old_enabled && enable)
1258    {
1259      client_state->enabled = 1;
1260      client_state->prefix_group_index = prefix_group_index;
1261      ASSERT (client_state->prefix_group_index != ~0);
1262      client_state->server_index = ~0;
1263
1264      rm->n_clients++;
1265      if (rm->n_clients == 1)
1266	{
1267	  enable_process ();
1268	  dhcp6_clients_enable_disable (1);
1269	}
1270
1271      ip6_enable (sw_if_index);
1272      send_client_message_start_stop (sw_if_index, ~0, DHCPV6_MSG_SOLICIT,
1273				      0, 1);
1274    }
1275  else if (old_enabled && !enable)
1276    {
1277      send_client_message_start_stop (sw_if_index, ~0, ~0, 0, 0);
1278
1279      rm->n_clients--;
1280      if (rm->n_clients == 0)
1281	{
1282	  dhcp6_clients_enable_disable (0);
1283	  disable_process ();
1284	}
1285
1286      vec_validate (prefix_list, 0);
1287
1288      /* *INDENT-OFF* */
1289      pool_foreach (prefix_info, pm->prefix_pool,
1290      ({
1291        if (is_dhcpv6_pd_prefix (prefix_info) &&
1292            prefix_info->opaque_data == sw_if_index)
1293          {
1294            ASSERT (sw_if_index < vec_len (rm->client_state_by_sw_if_index) &&
1295                    rm->client_state_by_sw_if_index[sw_if_index].enabled);
1296            client_state_t *client_state =
1297              &rm->client_state_by_sw_if_index[sw_if_index];
1298            prefix_list[0] = *prefix_info;
1299            send_client_message_start_stop (sw_if_index,
1300                                            client_state->server_index,
1301                                            DHCPV6_MSG_RELEASE, prefix_list,
1302                                            1);
1303            u32 prefix_index = prefix_info - pm->prefix_pool;
1304            notify_prefix_add_del (prefix_index, 0);
1305            set_is_dhcpv6_pd_prefix (prefix_info, 0);
1306            pool_put (pm->prefix_pool, prefix_info);
1307          }
1308      }));
1309      /* *INDENT-ON* */
1310
1311      vec_free (prefix_list);
1312
1313      clib_memset (client_state, 0, sizeof (*client_state));
1314    }
1315
1316  return 0;
1317}
1318
1319static clib_error_t *
1320dhcp6_pd_client_enable_disable_command_fn (vlib_main_t *
1321					   vm,
1322					   unformat_input_t
1323					   * input, vlib_cli_command_t * cmd)
1324{
1325  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
1326  vnet_main_t *vnm = rm->vnet_main;
1327  clib_error_t *error = 0;
1328  u8 *prefix_group = 0;
1329  u32 sw_if_index = ~0;
1330  u8 enable = 1;
1331  unformat_input_t _line_input, *line_input = &_line_input;
1332
1333  if (!unformat_user (input, unformat_line_input, line_input))
1334    return 0;
1335
1336  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1337    {
1338      if (unformat
1339	  (line_input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
1340	;
1341      else if (unformat (line_input, "prefix group %s", &prefix_group));
1342      else if (unformat (line_input, "disable"))
1343	enable = 0;
1344      else
1345	{
1346	  error = clib_error_return (0, "unexpected input `%U'",
1347				     format_unformat_error, line_input);
1348	  goto done;
1349	}
1350    }
1351
1352  if (prefix_group == 0 && enable)
1353    error = clib_error_return (0, "Prefix group must be set when enabling");
1354  else if (sw_if_index != ~0)
1355    {
1356      if (dhcp6_pd_client_enable_disable (sw_if_index, prefix_group, enable)
1357	  != 0)
1358	error = clib_error_return (0, "Invalid sw_if_index or prefix group");
1359    }
1360  else
1361    error = clib_error_return (0, "Missing sw_if_index");
1362
1363done:
1364  vec_free (prefix_group);
1365  unformat_free (line_input);
1366
1367  return error;
1368}
1369
1370/*?
1371 * This command is used to enable/disable DHCPv6 PD client
1372 * on particular interface.
1373 *
1374 * @cliexpar
1375 * @parblock
1376 * Example of how to enable DHCPv6 PD client:
1377 * @cliexcmd{dhcp6 pd client GigabitEthernet2/0/0 prefix group my-pd-group}
1378 * Example of how to disable DHCPv6 PD client:
1379 * @cliexcmd{dhcp6 pd client GigabitEthernet2/0/0 disable}
1380 * @endparblock
1381?*/
1382/* *INDENT-OFF* */
1383VLIB_CLI_COMMAND (dhcp6_pd_client_enable_disable_command, static) = {
1384  .path = "dhcp6 pd client",
1385  .short_help = "dhcp6 pd client <interface> (prefix group <string> | disable)",
1386  .function = dhcp6_pd_client_enable_disable_command_fn,
1387};
1388/* *INDENT-ON* */
1389
1390static clib_error_t *
1391dhcp_pd_client_cp_init (vlib_main_t * vm)
1392{
1393  dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
1394
1395  rm->vlib_main = vm;
1396  rm->vnet_main = vnet_get_main ();
1397  rm->api_main = &api_main;
1398  rm->node_index = dhcp6_pd_client_cp_process_node.index;
1399
1400  return (NULL);
1401}
1402
1403VLIB_INIT_FUNCTION (dhcp_pd_client_cp_init);
1404
1405/*
1406 * fd.io coding-style-patch-verification: ON
1407 *
1408 * Local Variables:
1409 * eval: (c-set-style "gnu")
1410 * End:
1411 */
1412