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:
7 * http://www.apache.org/licenses/LICENSE-2.0
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.
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_link.h>
23 #include <vnet/ip6-nd/ip6_ra.h>
27 #include <vnet/ip/ip_types_api.h>
31 u32 prefix_group_index;
32 uword opaque_data; // used by prefix publisher
43 u32 prefix_group_index;
55 client_state_t *client_state_by_sw_if_index;
56 clib_bitmap_t *prefix_ownership_bitmap;
58 f64 max_valid_due_time;
61 vlib_main_t *vlib_main;
62 vnet_main_t *vnet_main;
65 } dhcp6_pd_client_cp_main_t;
67 static dhcp6_pd_client_cp_main_t dhcp6_pd_client_cp_main;
71 prefix_info_t *prefix_pool;
72 const u8 **prefix_group_name_by_index;
75 static ip6_prefix_main_t ip6_prefix_main;
81 u32 prefix_group_index;
82 ip6_address_t address;
86 u8 configured_in_data_plane;
91 ip6_address_info_t *addresses;
92 u32 *active_prefix_index_by_prefix_group_index;
93 } ip6_address_with_prefix_main_t;
95 static ip6_address_with_prefix_main_t ip6_address_with_prefix_main;
99 DHCPV6_PD_EVENT_INTERRUPT,
100 DHCPV6_PD_EVENT_DISABLE,
103 static_always_inline u32
104 active_prefix_index_by_prefix_group_index_get (u32 prefix_group_index)
106 ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main;
108 if (prefix_group_index >=
109 vec_len (apm->active_prefix_index_by_prefix_group_index))
112 return apm->active_prefix_index_by_prefix_group_index[prefix_group_index];
115 static_always_inline void
116 active_prefix_index_by_prefix_group_index_set (u32 prefix_group_index,
119 ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main;
120 static const u32 empty = ~0;
122 ASSERT (prefix_group_index != ~0);
124 if (prefix_index == ~0
125 && prefix_group_index >=
126 vec_len (apm->active_prefix_index_by_prefix_group_index))
129 vec_validate_init_empty (apm->active_prefix_index_by_prefix_group_index,
130 prefix_group_index, empty);
131 apm->active_prefix_index_by_prefix_group_index[prefix_group_index] =
135 static_always_inline u8
136 is_dhcpv6_pd_prefix (prefix_info_t * prefix_info)
138 dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
139 ip6_prefix_main_t *pm = &ip6_prefix_main;
142 prefix_index = prefix_info - pm->prefix_pool;
143 return clib_bitmap_get (rm->prefix_ownership_bitmap, prefix_index);
146 static_always_inline void
147 set_is_dhcpv6_pd_prefix (prefix_info_t * prefix_info, u8 value)
149 dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
150 ip6_prefix_main_t *pm = &ip6_prefix_main;
153 prefix_index = prefix_info - pm->prefix_pool;
154 rm->prefix_ownership_bitmap =
155 clib_bitmap_set (rm->prefix_ownership_bitmap, prefix_index, value);
159 cp_ip6_address_prefix_add_del_handler (u32 prefix_index, u8 is_add);
162 notify_prefix_add_del (u32 prefix_index, u8 is_add)
164 // TODO: use registries
165 cp_ip6_address_prefix_add_del_handler (prefix_index, is_add);
169 send_client_message_start_stop (u32 sw_if_index, u32 server_index,
170 u8 msg_type, prefix_info_t * prefix_list,
173 dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
174 dhcp6_pd_send_client_message_params_t params = { 0, };
175 dhcp6_pd_send_client_message_params_prefix_t *prefixes = 0, *pref;
178 ASSERT (sw_if_index < vec_len (rm->client_state_by_sw_if_index) &&
179 rm->client_state_by_sw_if_index[sw_if_index].enabled);
180 client_state_t *client_state =
181 &rm->client_state_by_sw_if_index[sw_if_index];
183 params.sw_if_index = sw_if_index;
184 params.server_index = server_index;
185 params.msg_type = msg_type;
188 if (msg_type == DHCPV6_MSG_SOLICIT)
193 else if (msg_type == DHCPV6_MSG_REQUEST)
199 else if (msg_type == DHCPV6_MSG_RENEW)
203 f64 current_time = vlib_time_now (rm->vlib_main);
204 i32 diff_time = client_state->T2 - current_time;
207 params.mrd = diff_time;
209 else if (msg_type == DHCPV6_MSG_REBIND)
213 f64 current_time = vlib_time_now (rm->vlib_main);
214 i32 diff_time = rm->max_valid_due_time - current_time;
217 params.mrd = diff_time;
219 else if (msg_type == DHCPV6_MSG_RELEASE)
227 if (vec_len (prefix_list) != 0)
228 vec_validate (prefixes, vec_len (prefix_list) - 1);
229 for (i = 0; i < vec_len (prefix_list); i++)
231 prefix_info_t *prefix = &prefix_list[i];
233 pref->valid_lt = prefix->valid_lt;
234 pref->preferred_lt = prefix->preferred_lt;
235 pref->prefix = prefix->prefix;
236 pref->prefix_length = prefix->prefix_length;
238 params.prefixes = prefixes;
240 dhcp6_pd_send_client_message (rm->vlib_main, sw_if_index, !start, ¶ms);
242 vec_free (params.prefixes);
245 static void interrupt_process (void);
248 ip6_prefixes_equal (ip6_address_t * prefix1, ip6_address_t * prefix2, u8 len)
252 if (prefix1->as_u64[0] != prefix2->as_u64[0])
256 return clib_net_to_host_u64 (prefix1->as_u64[1]) >> (128 - len) ==
257 clib_net_to_host_u64 (prefix2->as_u64[1]) >> (128 - len);
259 return clib_net_to_host_u64 (prefix1->as_u64[0]) >> (64 - len) ==
260 clib_net_to_host_u64 (prefix2->as_u64[0]) >> (64 - len);
263 static clib_error_t *
264 dhcp6_pd_reply_event_handler (vl_api_dhcp6_pd_reply_event_t * mp)
266 dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
267 ip6_prefix_main_t *pm = &ip6_prefix_main;
268 vlib_main_t *vm = rm->vlib_main;
269 client_state_t *client_state;
270 ip6_address_t *prefix;
273 vl_api_dhcp6_pd_prefix_info_t *api_prefix;
274 u32 inner_status_code;
278 clib_error_t *error = 0;
281 current_time = vlib_time_now (vm);
283 sw_if_index = ntohl (mp->sw_if_index);
285 if (sw_if_index >= vec_len (rm->client_state_by_sw_if_index))
288 client_state = &rm->client_state_by_sw_if_index[sw_if_index];
290 if (!client_state->enabled)
293 server_index = ntohl (mp->server_index);
295 n_prefixes = ntohl (mp->n_prefixes);
297 inner_status_code = ntohs (mp->inner_status_code);
298 status_code = ntohs (mp->status_code);
300 if (mp->msg_type == DHCPV6_MSG_API_ADVERTISE
301 && client_state->server_index == ~0)
303 prefix_info_t *prefix_list = 0, *prefix_info;
306 if (inner_status_code == DHCPV6_STATUS_NOPREFIX_AVAIL)
309 ("Advertise message arrived with NoPrefixAvail status code");
314 vec_validate (prefix_list, n_prefixes - 1);
315 for (i = 0; i < n_prefixes; i++)
317 api_prefix = &mp->prefixes[i];
318 prefix = (ip6_address_t *) api_prefix->prefix.address;
319 prefix_length = api_prefix->prefix.len;
321 prefix_info = &prefix_list[i];
322 prefix_info->prefix = *prefix;
323 prefix_info->prefix_length = prefix_length;
324 prefix_info->preferred_lt = 0;
325 prefix_info->valid_lt = 0;
328 client_state->server_index = server_index;
330 send_client_message_start_stop (sw_if_index, server_index,
331 DHCPV6_MSG_REQUEST, prefix_list, 1);
332 vec_free (prefix_list);
335 if (mp->msg_type != DHCPV6_MSG_API_REPLY)
338 if (!client_state->rebinding && client_state->server_index != server_index)
340 clib_warning ("Reply message arrived with Server ID different "
341 "from that in Request or Renew message");
345 if (inner_status_code == DHCPV6_STATUS_NOPREFIX_AVAIL)
347 clib_warning ("Reply message arrived with NoPrefixAvail status code");
351 ("Invalid Reply message arrived: It contains NoPrefixAvail "
352 "status code but also contains prefixes");
357 if (status_code == DHCPV6_STATUS_UNSPEC_FAIL)
359 clib_warning ("Reply message arrived with UnspecFail status code");
363 send_client_message_start_stop (sw_if_index, server_index,
366 for (i = 0; i < n_prefixes; i++)
368 prefix_info_t *prefix_info = 0;
373 api_prefix = &mp->prefixes[i];
375 prefix = (ip6_address_t *) api_prefix->prefix.address;
376 prefix_length = api_prefix->prefix.len;
378 if (ip6_address_is_link_local_unicast (prefix))
381 valid_time = ntohl (api_prefix->valid_time);
382 preferred_time = ntohl (api_prefix->preferred_time);
383 prefix_length = api_prefix->prefix.len;
385 if (preferred_time > valid_time)
388 u8 address_prefix_present = 0;
390 pool_foreach (prefix_info, pm->prefix_pool,
392 if (is_dhcpv6_pd_prefix (prefix_info) &&
393 prefix_info->opaque_data == sw_if_index &&
394 prefix_info->prefix_length == prefix_length &&
395 ip6_prefixes_equal (&prefix_info->prefix, prefix, prefix_length))
397 address_prefix_present = 1;
398 goto prefix_pool_foreach_out;
402 prefix_pool_foreach_out:
404 if (address_prefix_present)
407 * We found the prefix. Move along.
408 * Don't touch the prefix timers!
409 * If we happen to receive a renew reply just before we
410 * would have sent a solicit to renew the prefix delegation,
411 * we forget to renew the delegation. Worse luck, we start
412 * sending router advertisements with a valid time of zero,
413 * and the wheels fall off...
421 pool_get (pm->prefix_pool, prefix_info);
422 prefix_info->prefix_group_index = client_state->prefix_group_index;
423 set_is_dhcpv6_pd_prefix (prefix_info, 1);
424 prefix_info->opaque_data = sw_if_index;
425 prefix_info->prefix_length = prefix_length;
426 prefix_info->prefix = *prefix;
427 prefix_info->preferred_lt = preferred_time;
428 prefix_info->valid_lt = valid_time;
429 prefix_info->due_time = current_time + valid_time;
430 if (prefix_info->due_time > rm->max_valid_due_time)
431 rm->max_valid_due_time = prefix_info->due_time;
432 rm->client_state_by_sw_if_index[sw_if_index].prefix_count++;
434 u32 prefix_index = prefix_info - pm->prefix_pool;
435 notify_prefix_add_del (prefix_index, 1);
438 client_state->server_index = server_index;
439 client_state->T1 = ntohl (mp->T1);
440 client_state->T2 = ntohl (mp->T2);
441 if (client_state->T1 != 0)
442 client_state->T1_due_time = current_time + client_state->T1;
443 if (client_state->T2 != 0)
444 client_state->T2_due_time = current_time + client_state->T2;
445 client_state->rebinding = 0;
447 interrupt_process ();
452 static prefix_info_t *
453 create_prefix_list (u32 sw_if_index)
455 ip6_prefix_main_t *pm = &ip6_prefix_main;
456 prefix_info_t *prefix_info, *prefix_list = 0;;
459 pool_foreach (prefix_info, pm->prefix_pool,
461 if (is_dhcpv6_pd_prefix (prefix_info) &&
462 prefix_info->opaque_data == sw_if_index)
464 u32 pos = vec_len (prefix_list);
465 vec_validate (prefix_list, pos);
466 clib_memcpy (&prefix_list[pos], prefix_info, sizeof (*prefix_info));
474 VNET_DHCP6_PD_REPLY_EVENT_FUNCTION (dhcp6_pd_reply_event_handler);
477 dhcp6_pd_client_cp_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
480 dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
481 ip6_prefix_main_t *pm = &ip6_prefix_main;
482 prefix_info_t *prefix_info;
483 client_state_t *client_state;
484 f64 sleep_time = 1e9;
488 uword *event_data = 0;
493 vlib_process_wait_for_event_or_clock (vm, sleep_time);
494 event_type = vlib_process_get_events (vm, &event_data);
495 vec_reset_length (event_data);
497 if (event_type == DHCPV6_PD_EVENT_DISABLE)
499 vlib_node_set_state (vm, rm->node_index, VLIB_NODE_STATE_DISABLED);
504 current_time = vlib_time_now (vm);
507 due_time = current_time + 1e9;
509 pool_foreach (prefix_info, pm->prefix_pool,
511 if (is_dhcpv6_pd_prefix (prefix_info))
513 if (prefix_info->due_time > current_time)
515 if (prefix_info->due_time < due_time)
516 due_time = prefix_info->due_time;
520 u32 prefix_index = prefix_info - pm->prefix_pool;
521 notify_prefix_add_del (prefix_index, 0);
522 u32 sw_if_index = prefix_info->opaque_data;
523 set_is_dhcpv6_pd_prefix (prefix_info, 0);
524 pool_put (pm->prefix_pool, prefix_info);
525 client_state = &rm->client_state_by_sw_if_index[sw_if_index];
526 if (--client_state->prefix_count == 0)
528 client_state->rebinding = 0;
529 client_state->server_index = ~0;
530 send_client_message_start_stop (sw_if_index, ~0,
538 for (i = 0; i < vec_len (rm->client_state_by_sw_if_index); i++)
540 client_state_t *cs = &rm->client_state_by_sw_if_index[i];
541 if (cs->enabled && cs->server_index != ~0)
543 if (cs->T2_due_time > current_time)
545 if (cs->T2_due_time < due_time)
546 due_time = cs->T2_due_time;
547 if (cs->T1_due_time > current_time)
549 if (cs->T1_due_time < due_time)
550 due_time = cs->T1_due_time;
554 cs->T1_due_time = DBL_MAX;
555 prefix_info_t *prefix_list;
556 prefix_list = create_prefix_list (i);
557 send_client_message_start_stop (i, cs->server_index,
560 vec_free (prefix_list);
565 cs->T2_due_time = DBL_MAX;
566 prefix_info_t *prefix_list;
567 prefix_list = create_prefix_list (i);
569 send_client_message_start_stop (i, ~0,
572 vec_free (prefix_list);
576 current_time = vlib_time_now (vm);
578 while (due_time < current_time);
580 sleep_time = due_time - current_time;
587 VLIB_REGISTER_NODE (dhcp6_pd_client_cp_process_node) = {
588 .function = dhcp6_pd_client_cp_process,
589 .type = VLIB_NODE_TYPE_PROCESS,
590 .name = "dhcp6-pd-client-cp-process",
595 interrupt_process (void)
597 dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
598 vlib_main_t *vm = rm->vlib_main;
600 vlib_process_signal_event (vm, dhcp6_pd_client_cp_process_node.index,
601 DHCPV6_PD_EVENT_INTERRUPT, 0);
605 disable_process (void)
607 dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
608 vlib_main_t *vm = rm->vlib_main;
610 vlib_process_signal_event (vm, dhcp6_pd_client_cp_process_node.index,
611 DHCPV6_PD_EVENT_DISABLE, 0);
615 enable_process (void)
617 dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
618 vlib_main_t *vm = rm->vlib_main;
621 node = vec_elt (vm->node_main.nodes, rm->node_index);
623 vlib_node_set_state (vm, rm->node_index, VLIB_NODE_STATE_POLLING);
624 vlib_start_process (vm, node->runtime_index);
628 cp_ip6_construct_address (ip6_address_info_t * address_info, u32 prefix_index,
629 ip6_address_t * r_addr)
631 ip6_prefix_main_t *pm = &ip6_prefix_main;
632 prefix_info_t *prefix;
633 u64 mask, addr0, pref;
635 addr0 = clib_net_to_host_u64 (address_info->address.as_u64[0]);
636 prefix = &pm->prefix_pool[prefix_index];
637 if (prefix->prefix_length > 64)
639 clib_warning ("Prefix length is bigger that 64 bits");
642 mask = ((u64) 1 << (64 - prefix->prefix_length)) - 1;
644 pref = clib_host_to_net_u64 (prefix->prefix.as_u64[0]);
647 r_addr->as_u64[0] = clib_host_to_net_u64 (addr0);
648 r_addr->as_u64[1] = address_info->address.as_u64[1];
654 cp_ip6_address_add_del_now (ip6_address_info_t * address_info, u8 is_add)
656 vlib_main_t *vm = vlib_get_main ();
661 if (address_info->prefix_group_index != ~0)
663 active_prefix_index_by_prefix_group_index_get
664 (address_info->prefix_group_index);
668 if (is_add && !address_info->configured_in_data_plane)
670 if (prefix_index != ~0)
672 if (cp_ip6_construct_address (address_info, prefix_index, &addr) !=
676 ip6_add_del_interface_address (vm, address_info->sw_if_index,
677 &addr, address_info->prefix_length,
680 clib_warning ("Failed adding IPv6 address: %U",
681 format_clib_error, error);
685 clib_warning ("Add address %U on %U",
686 format_ip6_address_and_length,
687 &addr, address_info->prefix_length,
688 format_vnet_sw_if_index_name,
689 vnet_get_main (), address_info->sw_if_index);
691 address_info->configured_in_data_plane = 1;
696 if (address_info->prefix_group_index == ~0)
699 ip6_add_del_interface_address (vm, address_info->sw_if_index,
700 &address_info->address,
701 address_info->prefix_length,
704 clib_warning ("Failed adding IPv6 address: %U",
705 format_clib_error, error);
709 clib_warning ("Add address %U on %U",
710 format_ip6_address_and_length,
711 &addr, address_info->prefix_length,
712 format_vnet_sw_if_index_name,
714 address_info->sw_if_index);
716 address_info->configured_in_data_plane = 1;
721 else if (!is_add && address_info->configured_in_data_plane)
723 if (prefix_index == ~0)
725 if (address_info->prefix_group_index == ~0)
728 ip6_add_del_interface_address (vm, address_info->sw_if_index,
729 &address_info->address,
730 address_info->prefix_length,
733 clib_warning ("Failed deleting IPv6 address: %U",
734 format_clib_error, error);
735 address_info->configured_in_data_plane = 0;
738 clib_warning ("Deleting address with prefix "
739 "but active prefix index is not set");
743 if (cp_ip6_construct_address (address_info, prefix_index, &addr) !=
747 ip6_add_del_interface_address (vm, address_info->sw_if_index,
748 &addr, address_info->prefix_length,
751 clib_warning ("Failed deleting IPv6 address: %U",
752 format_clib_error, error);
753 address_info->configured_in_data_plane = 0;
759 cp_ip6_address_find_new_active_prefix (u32 prefix_group_index,
760 u32 ignore_prefix_index)
762 ip6_prefix_main_t *pm = &ip6_prefix_main;
763 prefix_info_t *prefix_info;
766 pool_foreach (prefix_info, pm->prefix_pool,
768 if (prefix_info->prefix_group_index == prefix_group_index &&
769 prefix_info - pm->prefix_pool != ignore_prefix_index)
770 return prefix_info - pm->prefix_pool;
777 cp_ip6_advertise_prefix (prefix_info_t * prefix_info,
778 ip6_address_info_t * address_info, int enable)
780 vlib_main_t *vm = vlib_get_main ();
781 ip6_main_t *im = &ip6_main;
787 active_prefix_index_by_prefix_group_index_get
788 (address_info->prefix_group_index);
790 if (cp_ip6_construct_address (address_info, prefix_index, &addr) != 0)
792 clib_warning ("address construction FAIL");
796 /* The RA code assumes that host bits are zero, so clear them */
797 addr.as_u64[0] &= im->fib_masks[address_info->prefix_length].as_u64[0];
798 addr.as_u64[1] &= im->fib_masks[address_info->prefix_length].as_u64[1];
800 rv = ip6_ra_prefix (vm, address_info->sw_if_index,
801 &addr, address_info->prefix_length,
802 0 /* use_default */ ,
803 prefix_info->valid_lt,
804 prefix_info->preferred_lt, 0 /* no_advertise */ ,
806 0 /* no_autoconfig */ ,
808 enable == 0 /* is_no */ );
811 clib_warning ("ip6_neighbor_ra_prefix returned %d", rv);
816 clib_warning ("Advertise prefix %U valid lt %u preferred lt %u",
817 format_ip6_address_and_length, &addr,
818 address_info->prefix_length, prefix_info->valid_lt,
819 prefix_info->preferred_lt);
824 cp_ip6_address_prefix_add_del_handler (u32 prefix_index, u8 is_add)
826 ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main;
827 ip6_prefix_main_t *pm = &ip6_prefix_main;
828 ip6_address_info_t *address_info;
829 prefix_info_t *prefix;
830 u32 new_prefix_index;
831 u32 prefix_group_index;
834 prefix = &pm->prefix_pool[prefix_index];
835 prefix_group_index = prefix->prefix_group_index;
839 if (active_prefix_index_by_prefix_group_index_get
840 (prefix_group_index) == ~0)
842 active_prefix_index_by_prefix_group_index_set
843 (prefix_group_index, prefix_index);
844 for (i = 0; i < vec_len (apm->addresses); i++)
846 address_info = &apm->addresses[i];
847 if (address_info->prefix_group_index == prefix_group_index)
849 /* Add the prefix to the interface */
850 cp_ip6_address_add_del_now (address_info, 1 /* add */ );
851 /* And advertise the prefix on the interface */
852 cp_ip6_advertise_prefix (prefix, address_info,
860 if (active_prefix_index_by_prefix_group_index_get
861 (prefix_group_index) == prefix_index)
863 for (i = 0; i < vec_len (apm->addresses); i++)
865 address_info = &apm->addresses[i];
866 if (address_info->prefix_group_index == prefix_group_index)
868 cp_ip6_advertise_prefix (prefix, address_info,
870 cp_ip6_address_add_del_now (address_info, 0 /* del */ );
873 active_prefix_index_by_prefix_group_index_set
874 (prefix_group_index, ~0);
876 cp_ip6_address_find_new_active_prefix (prefix_group_index,
878 if (new_prefix_index != ~0)
880 active_prefix_index_by_prefix_group_index_set
881 (prefix_group_index, new_prefix_index);
882 for (i = 0; i < vec_len (apm->addresses); i++)
884 address_info = &apm->addresses[i];
885 if (address_info->prefix_group_index == prefix_group_index)
887 cp_ip6_address_add_del_now (address_info, 1 /* add */ );
888 cp_ip6_advertise_prefix (prefix, address_info,
898 prefix_group_find_or_create (const u8 * name, u8 create)
900 ip6_prefix_main_t *pm = &ip6_prefix_main;
905 for (i = 0; i < vec_len (pm->prefix_group_name_by_index); i++)
907 if (pm->prefix_group_name_by_index[i] == 0)
910 strcmp ((const char *) pm->prefix_group_name_by_index[i],
911 (const char *) name))
916 name_dup = (u8 *) strdup ((const char *) name);
917 if (free_index != ~0)
919 pm->prefix_group_name_by_index[free_index] = name_dup;
924 vec_add1 (pm->prefix_group_name_by_index, name_dup);
925 return vec_len (pm->prefix_group_name_by_index) - 1;
930 dhcp6_cp_ip6_address_add_del (u32 sw_if_index, const u8 * prefix_group,
931 ip6_address_t address, u8 prefix_length,
935 ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main;
936 vnet_main_t *vnm = vnet_get_main ();
937 ip6_address_info_t *address_info;
938 u32 prefix_group_index;
941 if (!vnet_sw_interface_is_api_valid (vnm, sw_if_index))
943 clib_warning ("Invalid sw_if_index");
944 return VNET_API_ERROR_INVALID_VALUE;
947 if (prefix_group != 0 && prefix_group[0] != '\0')
949 if (strnlen ((const char *) prefix_group, 64) == 64)
950 return VNET_API_ERROR_INVALID_VALUE;
952 prefix_group_index = prefix_group_find_or_create (prefix_group, 1);
955 prefix_group_index = ~0;
957 n = vec_len (apm->addresses);
959 vec_foreach (address_info, apm->addresses)
961 if (address_info->sw_if_index == sw_if_index &&
962 address_info->prefix_group_index == prefix_group_index &&
963 address_info->prefix_length == prefix_length &&
964 0 == memcmp (&address_info->address, &address, 16))
967 return VNET_API_ERROR_DUPLICATE_IF_ADDRESS;
968 cp_ip6_address_add_del_now (address_info, 0 /* del */ );
969 *address_info = apm->addresses[n - 1];
970 _vec_len (apm->addresses) = n - 1;
976 return VNET_API_ERROR_ADDRESS_NOT_FOUND_FOR_INTERFACE;
978 vec_validate (apm->addresses, n);
979 address_info = &apm->addresses[n];
980 address_info->sw_if_index = sw_if_index;
981 address_info->prefix_group_index = prefix_group_index;
982 address_info->address = address;
983 address_info->prefix_length = prefix_length;
984 cp_ip6_address_add_del_now (address_info, 1 /* add */ );
989 static clib_error_t *
990 cp_ip6_address_add_del_command_function (vlib_main_t * vm,
991 unformat_input_t * input,
992 vlib_cli_command_t * cmd)
994 vnet_main_t *vnm = vnet_get_main ();
995 clib_error_t *error = 0;
996 u32 sw_if_index = ~0;
997 u8 *prefix_group = 0;
998 ip6_address_t address;
1002 unformat_input_t _line_input, *line_input = &_line_input;
1004 if (!unformat_user (input, unformat_line_input, line_input))
1007 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1010 (line_input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index));
1011 else if (unformat (line_input, "prefix group %s", &prefix_group));
1013 if (unformat (line_input, "%U/%d", unformat_ip6_address,
1014 &address, &prefix_length))
1016 else if (unformat (line_input, "del"))
1020 error = clib_error_return (0, "unexpected input `%U'",
1021 format_unformat_error, line_input);
1022 unformat_free (line_input);
1027 unformat_free (line_input);
1029 if (sw_if_index == ~0)
1030 error = clib_error_return (0, "Missing sw_if_index");
1031 else if (address_set == 0)
1032 error = clib_error_return (0, "Missing address");
1035 if (dhcp6_cp_ip6_address_add_del
1036 (sw_if_index, prefix_group, address, prefix_length, add) != 0)
1037 error = clib_error_return (0, "Error adding or removing address");
1045 * This command is used to add/delete IPv6 address
1046 * potentially using available prefix from specified prefix group
1050 * Example of how to add IPv6 address:
1051 * @cliexcmd{set ip6 address GigabitEthernet2/0/0
1052 * prefix group my-prefix-group ::7/64}
1053 * Example of how to delete IPv6 address:
1054 * @cliexcmd{set ip6 address GigabitEthernet2/0/0
1055 * prefix group my-prefix-group ::7/64 del}
1059 VLIB_CLI_COMMAND (ip6_address_add_del_command, static) = {
1060 .path = "set ip6 address",
1061 .short_help = "set ip6 address <interface> [prefix group <string>] "
1063 .function = cp_ip6_address_add_del_command_function,
1067 static clib_error_t *
1068 cp_ip6_addresses_show_command_function (vlib_main_t * vm,
1069 unformat_input_t * input,
1070 vlib_cli_command_t * cmd)
1072 ip6_address_with_prefix_main_t *apm = &ip6_address_with_prefix_main;
1073 ip6_prefix_main_t *pm = &ip6_prefix_main;
1074 ip6_address_info_t *address_info;
1075 const u8 *prefix_group;
1076 clib_error_t *error = 0;
1079 for (i = 0; i < vec_len (apm->addresses); i++)
1081 address_info = &apm->addresses[i];
1082 if (address_info->prefix_group_index == ~0)
1083 prefix_group = (const u8 *) "NONE";
1086 pm->prefix_group_name_by_index[address_info->prefix_group_index];
1087 vlib_cli_output (vm,
1088 "sw_if_index: %u, prefix_group: %s, address: %U/%d",
1089 address_info->sw_if_index, prefix_group,
1090 format_ip6_address, &address_info->address,
1091 address_info->prefix_length);
1098 VLIB_CLI_COMMAND (ip6_addresses_show_command, static) = {
1099 .path = "show ip6 addresses",
1100 .short_help = "show ip6 addresses",
1101 .function = cp_ip6_addresses_show_command_function,
1105 static clib_error_t *
1106 cp_ip6_prefixes_show_command_function (vlib_main_t * vm,
1107 unformat_input_t * input,
1108 vlib_cli_command_t * cmd)
1110 ip6_prefix_main_t *pm = &ip6_prefix_main;
1111 clib_error_t *error = 0;
1112 prefix_info_t *prefix_info;
1113 const u8 *prefix_group;
1114 f64 current_time = vlib_time_now (vm);
1117 pool_foreach (prefix_info, pm->prefix_pool,
1120 pm->prefix_group_name_by_index[prefix_info->prefix_group_index];
1121 vlib_cli_output (vm, "opaque_data: %lu, prefix: %U/%d, prefix group: %s, "
1122 "preferred lifetime: %u, valid lifetime: %u "
1124 prefix_info->opaque_data, format_ip6_address,
1125 &prefix_info->prefix, prefix_info->prefix_length,
1127 prefix_info->preferred_lt, prefix_info->valid_lt,
1128 prefix_info->due_time - current_time);
1136 VLIB_CLI_COMMAND (ip6_prefixes_show_command, static) = {
1137 .path = "show ip6 prefixes",
1138 .short_help = "show ip6 prefixes",
1139 .function = cp_ip6_prefixes_show_command_function,
1143 static clib_error_t *
1144 ip6_pd_clients_show_command_function (vlib_main_t * vm,
1145 unformat_input_t * input,
1146 vlib_cli_command_t * cmd)
1148 dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
1149 ip6_prefix_main_t *pm = &ip6_prefix_main;
1150 clib_error_t *error = 0;
1152 f64 current_time = vlib_time_now (vm);
1153 const u8 *prefix_group;
1156 const char *rebinding;
1159 for (i = 0; i < vec_len (rm->client_state_by_sw_if_index); i++)
1161 cs = &rm->client_state_by_sw_if_index[i];
1164 if (cs->T1_due_time != DBL_MAX && cs->T1_due_time > current_time)
1166 sprintf (buf1, "%u remaining",
1167 (u32) round (cs->T1_due_time - current_time));
1170 sprintf (buf1, "timeout");
1171 if (cs->T2_due_time != DBL_MAX && cs->T2_due_time > current_time)
1172 sprintf (buf2, "%u remaining",
1173 (u32) round (cs->T2_due_time - current_time));
1175 sprintf (buf2, "timeout");
1177 rebinding = ", REBINDING";
1181 pm->prefix_group_name_by_index[cs->prefix_group_index];
1183 vlib_cli_output (vm,
1184 "sw_if_index: %u, prefix group: %s, T1: %u (%s), "
1185 "T2: %u (%s), server index: %d%s", i,
1186 prefix_group, cs->T1, buf1, cs->T2, buf2,
1187 cs->server_index, rebinding);
1189 vlib_cli_output (vm, "sw_if_index: %u, prefix group: %s%s", i,
1190 prefix_group, rebinding);
1198 VLIB_CLI_COMMAND (ip6_pd_clients_show_command, static) = {
1199 .path = "show ip6 pd clients",
1200 .short_help = "show ip6 pd clients",
1201 .function = ip6_pd_clients_show_command_function,
1208 dhcp6_pd_client_enable_disable (u32 sw_if_index,
1209 const u8 * prefix_group, u8 enable)
1211 dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
1212 ip6_prefix_main_t *pm = &ip6_prefix_main;
1213 vnet_main_t *vnm = rm->vnet_main;
1214 client_state_t *client_state;
1215 static client_state_t empty_config = {
1218 prefix_info_t *prefix_info;
1219 prefix_info_t *prefix_list = 0;
1220 u32 prefix_group_index;
1222 if (!vnet_sw_interface_is_api_valid (vnm, sw_if_index))
1224 clib_warning ("Invalid sw_if_index");
1225 return VNET_API_ERROR_INVALID_VALUE;
1228 vec_validate_init_empty (rm->client_state_by_sw_if_index, sw_if_index,
1230 client_state = &rm->client_state_by_sw_if_index[sw_if_index];
1232 u8 old_enabled = client_state->enabled;
1236 if (strnlen ((const char *) prefix_group, 64) == 64
1237 || prefix_group[0] == '\0')
1238 return VNET_API_ERROR_INVALID_VALUE;
1239 prefix_group_index =
1240 prefix_group_find_or_create (prefix_group, !old_enabled);
1242 && prefix_group_index != client_state->prefix_group_index)
1243 return VNET_API_ERROR_INVALID_VALUE;
1246 if (!old_enabled && enable)
1248 client_state->enabled = 1;
1249 client_state->prefix_group_index = prefix_group_index;
1250 ASSERT (client_state->prefix_group_index != ~0);
1251 client_state->server_index = ~0;
1254 if (rm->n_clients == 1)
1257 dhcp6_clients_enable_disable (1);
1260 ip6_link_enable (sw_if_index);
1261 send_client_message_start_stop (sw_if_index, ~0, DHCPV6_MSG_SOLICIT,
1264 else if (old_enabled && !enable)
1266 send_client_message_start_stop (sw_if_index, ~0, ~0, 0, 0);
1269 if (rm->n_clients == 0)
1271 dhcp6_clients_enable_disable (0);
1275 vec_validate (prefix_list, 0);
1278 pool_foreach (prefix_info, pm->prefix_pool,
1280 if (is_dhcpv6_pd_prefix (prefix_info) &&
1281 prefix_info->opaque_data == sw_if_index)
1283 ASSERT (sw_if_index < vec_len (rm->client_state_by_sw_if_index) &&
1284 rm->client_state_by_sw_if_index[sw_if_index].enabled);
1285 client_state_t *client_state =
1286 &rm->client_state_by_sw_if_index[sw_if_index];
1287 prefix_list[0] = *prefix_info;
1288 send_client_message_start_stop (sw_if_index,
1289 client_state->server_index,
1290 DHCPV6_MSG_RELEASE, prefix_list,
1292 u32 prefix_index = prefix_info - pm->prefix_pool;
1293 notify_prefix_add_del (prefix_index, 0);
1294 set_is_dhcpv6_pd_prefix (prefix_info, 0);
1295 pool_put (pm->prefix_pool, prefix_info);
1300 vec_free (prefix_list);
1302 clib_memset (client_state, 0, sizeof (*client_state));
1308 static clib_error_t *
1309 dhcp6_pd_client_enable_disable_command_fn (vlib_main_t *
1312 * input, vlib_cli_command_t * cmd)
1314 dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
1315 vnet_main_t *vnm = rm->vnet_main;
1316 clib_error_t *error = 0;
1317 u8 *prefix_group = 0;
1318 u32 sw_if_index = ~0;
1320 unformat_input_t _line_input, *line_input = &_line_input;
1322 if (!unformat_user (input, unformat_line_input, line_input))
1325 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
1328 (line_input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
1330 else if (unformat (line_input, "prefix group %s", &prefix_group));
1331 else if (unformat (line_input, "disable"))
1335 error = clib_error_return (0, "unexpected input `%U'",
1336 format_unformat_error, line_input);
1341 if (prefix_group == 0 && enable)
1342 error = clib_error_return (0, "Prefix group must be set when enabling");
1343 else if (sw_if_index != ~0)
1345 if (dhcp6_pd_client_enable_disable (sw_if_index, prefix_group, enable)
1347 error = clib_error_return (0, "Invalid sw_if_index or prefix group");
1350 error = clib_error_return (0, "Missing sw_if_index");
1353 vec_free (prefix_group);
1354 unformat_free (line_input);
1360 * This command is used to enable/disable DHCPv6 PD client
1361 * on particular interface.
1365 * Example of how to enable DHCPv6 PD client:
1366 * @cliexcmd{dhcp6 pd client GigabitEthernet2/0/0 prefix group my-pd-group}
1367 * Example of how to disable DHCPv6 PD client:
1368 * @cliexcmd{dhcp6 pd client GigabitEthernet2/0/0 disable}
1372 VLIB_CLI_COMMAND (dhcp6_pd_client_enable_disable_command, static) = {
1373 .path = "dhcp6 pd client",
1374 .short_help = "dhcp6 pd client <interface> (prefix group <string> | disable)",
1375 .function = dhcp6_pd_client_enable_disable_command_fn,
1379 #include <vlib/unix/plugin.h>
1381 static clib_error_t *
1382 dhcp_pd_client_cp_init (vlib_main_t * vm)
1384 dhcp6_pd_client_cp_main_t *rm = &dhcp6_pd_client_cp_main;
1387 rm->vnet_main = vnet_get_main ();
1388 rm->api_main = vlibapi_get_main ();
1389 rm->node_index = dhcp6_pd_client_cp_process_node.index;
1394 VLIB_INIT_FUNCTION (dhcp_pd_client_cp_init);
1397 * fd.io coding-style-patch-verification: ON
1400 * eval: (c-set-style "gnu")