2 * Copyright (c) 2015 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 <vlib/vlib.h>
17 #include <vlib/unix/plugin.h>
18 #include <vlibmemory/api.h>
19 #include <vpp/app/version.h>
20 #include <vnet/vnet.h>
21 #include <vppinfra/error.h>
22 #include <vppinfra/random.h>
23 #include <vnet/udp/udp.h>
24 #include <vnet/ipsec/ipsec.h>
25 #include <vnet/ipsec/ipsec_tun.h>
26 #include <vnet/ipip/ipip.h>
27 #include <plugins/ikev2/ikev2.h>
28 #include <plugins/ikev2/ikev2_priv.h>
29 #include <plugins/dns/dns.h>
30 #include <openssl/sha.h>
31 #include <vnet/ipsec/ipsec_punt.h>
32 #include <plugins/ikev2/ikev2.api_enum.h>
34 #define IKEV2_LIVENESS_RETRIES 3
35 #define IKEV2_LIVENESS_PERIOD_CHECK 30
37 ikev2_main_t ikev2_main;
39 static int ikev2_delete_tunnel_interface (vnet_main_t * vnm,
41 ikev2_child_sa_t * child);
43 #define ikev2_set_state(sa, v, ...) do { \
45 ikev2_elog_sa_state("ispi %lx SA state changed to " #v __VA_ARGS__, sa->ispi); \
55 format_ikev2_trace (u8 * s, va_list * args)
57 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
58 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
59 ikev2_trace_t *t = va_arg (*args, ikev2_trace_t *);
61 s = format (s, "ikev2: sw_if_index %d, next index %d",
62 t->sw_if_index, t->next_index);
66 #define IKEV2_GENERATE_SA_INIT_OK_str ""
67 #define IKEV2_GENERATE_SA_INIT_OK_ERR_NO_DH_STR \
68 "no DH group configured for IKE proposals!"
69 #define IKEV2_GENERATE_SA_INIT_OK_ERR_UNSUPP_STR \
70 "DH group not supported!"
74 IKEV2_GENERATE_SA_INIT_OK,
75 IKEV2_GENERATE_SA_INIT_ERR_NO_DH,
76 IKEV2_GENERATE_SA_INIT_ERR_UNSUPPORTED_DH,
77 } ikev2_generate_sa_error_t;
80 format_ikev2_gen_sa_error (u8 * s, va_list * args)
82 ikev2_generate_sa_error_t e = va_arg (*args, ikev2_generate_sa_error_t);
85 case IKEV2_GENERATE_SA_INIT_OK:
87 case IKEV2_GENERATE_SA_INIT_ERR_NO_DH:
88 s = format (s, IKEV2_GENERATE_SA_INIT_OK_ERR_NO_DH_STR);
90 case IKEV2_GENERATE_SA_INIT_ERR_UNSUPPORTED_DH:
91 s = format (s, IKEV2_GENERATE_SA_INIT_OK_ERR_UNSUPP_STR);
99 IKEV2_NEXT_IP4_LOOKUP,
100 IKEV2_NEXT_IP4_ERROR_DROP,
106 IKEV2_NEXT_IP6_LOOKUP,
107 IKEV2_NEXT_IP6_ERROR_DROP,
111 typedef u32 ikev2_non_esp_marker;
114 ikev2_get_port (ikev2_sa_t *sa)
116 return ikev2_natt_active (sa) ? IKEV2_PORT_NATT : IKEV2_PORT;
120 ikev2_insert_non_esp_marker (ike_header_t *ike, int len)
122 memmove ((u8 *) ike + sizeof (ikev2_non_esp_marker), ike, len);
123 clib_memset (ike, 0, sizeof (ikev2_non_esp_marker));
124 return len + sizeof (ikev2_non_esp_marker);
127 static ikev2_sa_transform_t *
128 ikev2_find_transform_data (ikev2_sa_transform_t * t)
130 ikev2_main_t *km = &ikev2_main;
131 ikev2_sa_transform_t *td;
133 vec_foreach (td, km->supported_transforms)
135 if (td->type != t->type)
138 if (td->transform_id != t->transform_id)
141 if (td->type == IKEV2_TRANSFORM_TYPE_ENCR)
143 if (vec_len (t->attrs) != 4 || t->attrs[0] != 0x80
144 || t->attrs[1] != 14)
147 if (((t->attrs[2] << 8 | t->attrs[3]) / 8) != td->key_len)
155 static ikev2_sa_proposal_t *
156 ikev2_select_proposal (ikev2_sa_proposal_t * proposals,
157 ikev2_protocol_id_t prot_id)
159 ikev2_sa_proposal_t *rv = 0;
160 ikev2_sa_proposal_t *proposal;
161 ikev2_sa_transform_t *transform, *new_t;
162 u8 mandatory_bitmap, optional_bitmap;
164 if (prot_id == IKEV2_PROTOCOL_IKE)
166 mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_ENCR) |
167 (1 << IKEV2_TRANSFORM_TYPE_PRF) | (1 << IKEV2_TRANSFORM_TYPE_DH);
168 optional_bitmap = mandatory_bitmap | (1 << IKEV2_TRANSFORM_TYPE_INTEG);
170 else if (prot_id == IKEV2_PROTOCOL_ESP)
172 mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_ENCR) |
173 (1 << IKEV2_TRANSFORM_TYPE_ESN);
174 optional_bitmap = mandatory_bitmap |
175 (1 << IKEV2_TRANSFORM_TYPE_INTEG) | (1 << IKEV2_TRANSFORM_TYPE_DH);
177 else if (prot_id == IKEV2_PROTOCOL_AH)
179 mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_INTEG) |
180 (1 << IKEV2_TRANSFORM_TYPE_ESN);
181 optional_bitmap = mandatory_bitmap | (1 << IKEV2_TRANSFORM_TYPE_DH);
186 vec_add2 (rv, proposal, 1);
188 vec_foreach (proposal, proposals)
191 if (proposal->protocol_id != prot_id)
194 vec_foreach (transform, proposal->transforms)
196 if ((1 << transform->type) & bitmap)
199 if (ikev2_find_transform_data (transform))
201 bitmap |= 1 << transform->type;
202 vec_add2 (rv->transforms, new_t, 1);
203 clib_memcpy_fast (new_t, transform, sizeof (*new_t));
204 new_t->attrs = vec_dup (transform->attrs);
208 if ((bitmap & mandatory_bitmap) == mandatory_bitmap &&
209 (bitmap & ~optional_bitmap) == 0)
211 rv->proposal_num = proposal->proposal_num;
212 rv->protocol_id = proposal->protocol_id;
213 RAND_bytes ((u8 *) & rv->spi, sizeof (rv->spi));
214 if (rv->protocol_id != IKEV2_PROTOCOL_IKE)
215 rv->spi &= 0xffffffff;
220 vec_free (rv->transforms);
229 ikev2_sa_transform_t *
230 ikev2_sa_get_td_for_type (ikev2_sa_proposal_t * p,
231 ikev2_transform_type_t type)
233 ikev2_sa_transform_t *t;
238 vec_foreach (t, p->transforms)
241 return ikev2_find_transform_data (t);
247 ikev2_sa_get_child (ikev2_sa_t * sa, u32 spi, ikev2_protocol_id_t prot_id,
251 vec_foreach (c, sa->childs)
253 ikev2_sa_proposal_t *proposal =
254 by_initiator ? &c->i_proposals[0] : &c->r_proposals[0];
255 if (proposal && proposal->spi == spi && proposal->protocol_id == prot_id)
263 ikev2_sa_free_proposal_vector (ikev2_sa_proposal_t ** v)
265 ikev2_sa_proposal_t *p;
266 ikev2_sa_transform_t *t;
273 vec_foreach (t, p->transforms)
277 vec_free (p->transforms);
283 ikev2_sa_free_child_sa (ikev2_child_sa_t * c)
285 ikev2_sa_free_proposal_vector (&c->r_proposals);
286 ikev2_sa_free_proposal_vector (&c->i_proposals);
296 ikev2_sa_free_all_child_sa (ikev2_child_sa_t ** childs)
299 vec_foreach (c, *childs) ikev2_sa_free_child_sa (c);
305 ikev2_sa_del_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * child)
307 ikev2_sa_free_child_sa (child);
308 vec_del1 (sa->childs, child - sa->childs);
312 ikev2_sa_free_all_vec (ikev2_sa_t * sa)
314 vec_free (sa->i_nonce);
315 vec_free (sa->r_nonce);
317 vec_free (sa->dh_shared_key);
318 vec_free (sa->dh_private_key);
319 vec_free (sa->i_dh_data);
320 vec_free (sa->r_dh_data);
322 ikev2_sa_free_proposal_vector (&sa->r_proposals);
323 ikev2_sa_free_proposal_vector (&sa->i_proposals);
326 vec_free (sa->sk_ai);
327 vec_free (sa->sk_ar);
328 vec_free (sa->sk_ei);
329 vec_free (sa->sk_er);
330 vec_free (sa->sk_pi);
331 vec_free (sa->sk_pr);
333 vec_free (sa->i_id.data);
334 vec_free (sa->r_id.data);
336 vec_free (sa->i_auth.data);
338 EVP_PKEY_free (sa->i_auth.key);
339 vec_free (sa->r_auth.data);
341 EVP_PKEY_free (sa->r_auth.key);
345 vec_free (sa->rekey);
347 vec_free (sa->last_sa_init_req_packet_data);
348 vec_free (sa->last_sa_init_res_packet_data);
350 vec_free (sa->last_res_packet_data);
352 ikev2_sa_free_all_child_sa (&sa->childs);
356 ikev2_delete_sa (ikev2_main_per_thread_data_t * ptd, ikev2_sa_t * sa)
360 ikev2_sa_free_all_vec (sa);
362 p = hash_get (ptd->sa_by_rspi, sa->rspi);
365 hash_unset (ptd->sa_by_rspi, sa->rspi);
366 pool_put (ptd->sas, sa);
370 static ikev2_generate_sa_error_t
371 ikev2_generate_sa_init_data (ikev2_sa_t * sa)
373 ikev2_sa_transform_t *t = 0, *t2;
374 ikev2_main_t *km = &ikev2_main;
376 if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE)
377 return IKEV2_GENERATE_SA_INIT_ERR_NO_DH;
379 /* check if received DH group is on our list of supported groups */
380 vec_foreach (t2, km->supported_transforms)
382 if (t2->type == IKEV2_TRANSFORM_TYPE_DH && sa->dh_group == t2->dh_type)
391 sa->dh_group = IKEV2_TRANSFORM_DH_TYPE_NONE;
392 return IKEV2_GENERATE_SA_INIT_ERR_UNSUPPORTED_DH;
395 if (sa->is_initiator)
398 RAND_bytes ((u8 *) & sa->ispi, 8);
401 sa->i_nonce = vec_new (u8, IKEV2_NONCE_SIZE);
402 RAND_bytes ((u8 *) sa->i_nonce, IKEV2_NONCE_SIZE);
407 RAND_bytes ((u8 *) & sa->rspi, 8);
410 sa->r_nonce = vec_new (u8, vec_len (sa->i_nonce));
411 RAND_bytes ((u8 *) sa->r_nonce, vec_len (sa->i_nonce));
414 /* generate dh keys */
415 ikev2_generate_dh (sa, t);
417 return IKEV2_GENERATE_SA_INIT_OK;
421 ikev2_complete_sa_data (ikev2_sa_t * sa, ikev2_sa_t * sai)
423 ikev2_sa_transform_t *t = 0, *t2;
424 ikev2_main_t *km = &ikev2_main;
426 /*move some data to the new SA */
427 #define _(A) ({void* __tmp__ = (A); (A) = 0; __tmp__;})
428 sa->i_nonce = _(sai->i_nonce);
429 sa->i_dh_data = _(sai->i_dh_data);
430 sa->dh_private_key = _(sai->dh_private_key);
431 ip_address_copy (&sa->iaddr, &sai->iaddr);
432 ip_address_copy (&sa->raddr, &sai->raddr);
433 sa->is_initiator = sai->is_initiator;
434 sa->i_id.type = sai->i_id.type;
435 sa->r_id.type = sai->r_id.type;
436 sa->profile_index = sai->profile_index;
437 sa->tun_itf = sai->tun_itf;
438 sa->is_tun_itf_set = sai->is_tun_itf_set;
439 if (sai->natt_state == IKEV2_NATT_DISABLED)
440 sa->natt_state = IKEV2_NATT_DISABLED;
441 sa->i_id.data = _(sai->i_id.data);
442 sa->r_id.data = _(sai->r_id.data);
443 sa->i_auth.method = sai->i_auth.method;
444 sa->i_auth.hex = sai->i_auth.hex;
445 sa->i_auth.data = _(sai->i_auth.data);
446 sa->i_auth.key = _(sai->i_auth.key);
447 sa->last_sa_init_req_packet_data = _(sai->last_sa_init_req_packet_data);
448 sa->last_init_msg_id = sai->last_init_msg_id;
449 sa->childs = _(sai->childs);
450 sa->udp_encap = sai->udp_encap;
451 sa->ipsec_over_udp_port = sai->ipsec_over_udp_port;
452 sa->dst_port = sai->dst_port;
453 sa->sw_if_index = sai->sw_if_index;
457 if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE)
462 /* check if received DH group is on our list of supported groups */
463 vec_foreach (t2, km->supported_transforms)
465 if (t2->type == IKEV2_TRANSFORM_TYPE_DH && sa->dh_group == t2->dh_type)
474 sa->dh_group = IKEV2_TRANSFORM_DH_TYPE_NONE;
479 /* generate dh keys */
480 ikev2_complete_dh (sa, t);
485 ikev2_calc_keys_internal (ikev2_sa_t *sa, u8 *skeyseed)
488 /* calculate SKEYSEED = prf(Ni | Nr, g^ir) */
490 u16 integ_key_len = 0, salt_len = 0;
491 ikev2_sa_transform_t *tr_encr, *tr_prf, *tr_integ;
493 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR);
495 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
497 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG);
500 integ_key_len = tr_integ->key_len;
502 salt_len = sizeof (u32);
504 vec_append (s, sa->i_nonce);
505 vec_append (s, sa->r_nonce);
507 /* Calculate S = Ni | Nr | SPIi | SPIr */
509 vec_add2 (s, tmp, 2 * sizeof (*spi));
511 spi[0] = clib_host_to_net_u64 (sa->ispi);
512 spi[1] = clib_host_to_net_u64 (sa->rspi);
514 /* calculate PRFplus */
516 int len = tr_prf->key_trunc + /* SK_d */
517 integ_key_len * 2 + /* SK_ai, SK_ar */
518 tr_encr->key_len * 2 + /* SK_ei, SK_er */
519 tr_prf->key_len * 2 + /* SK_pi, SK_pr */
522 keymat = ikev2_calc_prfplus (tr_prf, skeyseed, s, len);
528 sa->sk_d = vec_new (u8, tr_prf->key_trunc);
529 clib_memcpy_fast (sa->sk_d, keymat + pos, tr_prf->key_trunc);
530 pos += tr_prf->key_trunc;
535 sa->sk_ai = vec_new (u8, integ_key_len);
536 clib_memcpy_fast (sa->sk_ai, keymat + pos, integ_key_len);
537 pos += integ_key_len;
540 sa->sk_ar = vec_new (u8, integ_key_len);
541 clib_memcpy_fast (sa->sk_ar, keymat + pos, integ_key_len);
542 pos += integ_key_len;
546 sa->sk_ei = vec_new (u8, tr_encr->key_len + salt_len);
547 clib_memcpy_fast (sa->sk_ei, keymat + pos, tr_encr->key_len + salt_len);
548 pos += tr_encr->key_len + salt_len;
551 sa->sk_er = vec_new (u8, tr_encr->key_len + salt_len);
552 clib_memcpy_fast (sa->sk_er, keymat + pos, tr_encr->key_len + salt_len);
553 pos += tr_encr->key_len + salt_len;
556 sa->sk_pi = vec_new (u8, tr_prf->key_len);
557 clib_memcpy_fast (sa->sk_pi, keymat + pos, tr_prf->key_len);
558 pos += tr_prf->key_len;
561 sa->sk_pr = vec_new (u8, tr_prf->key_len);
562 clib_memcpy_fast (sa->sk_pr, keymat + pos, tr_prf->key_len);
563 pos += tr_prf->key_len;
566 sa->keys_generated = 1;
570 ikev2_calc_keys_rekey (ikev2_sa_t *sa_new, ikev2_sa_t *sa_old)
572 u8 *s = 0, *skeyseed = 0;
573 ikev2_sa_transform_t *tr_prf =
574 ikev2_sa_get_td_for_type (sa_old->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
576 vec_append (s, sa_new->dh_shared_key);
577 vec_append (s, sa_new->i_nonce);
578 vec_append (s, sa_new->r_nonce);
579 skeyseed = ikev2_calc_prf (tr_prf, sa_old->sk_d, s);
581 ikev2_calc_keys_internal (sa_new, skeyseed);
588 ikev2_calc_keys (ikev2_sa_t *sa)
590 u8 *s = 0, *skeyseed = 0;
591 ikev2_sa_transform_t *tr_prf =
592 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
594 vec_append (s, sa->i_nonce);
595 vec_append (s, sa->r_nonce);
596 skeyseed = ikev2_calc_prf (tr_prf, s, sa->dh_shared_key);
598 ikev2_calc_keys_internal (sa, skeyseed);
605 ikev2_calc_child_keys (ikev2_sa_t *sa, ikev2_child_sa_t *child, u8 kex)
608 u16 integ_key_len = 0;
611 ikev2_sa_transform_t *tr_prf, *ctr_encr, *ctr_integ;
613 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
615 ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR);
617 ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG);
620 integ_key_len = ctr_integ->key_len;
622 salt_len = sizeof (u32);
625 vec_append (s, sa->dh_shared_key);
626 vec_append (s, sa->i_nonce);
627 vec_append (s, sa->r_nonce);
628 /* calculate PRFplus */
630 int len = ctr_encr->key_len * 2 + integ_key_len * 2 + salt_len * 2;
632 keymat = ikev2_calc_prfplus (tr_prf, sa->sk_d, s, len);
637 child->sk_ei = vec_new (u8, ctr_encr->key_len);
638 clib_memcpy_fast (child->sk_ei, keymat + pos, ctr_encr->key_len);
639 pos += ctr_encr->key_len;
644 child->sk_ai = vec_new (u8, ctr_integ->key_len);
645 clib_memcpy_fast (child->sk_ai, keymat + pos, ctr_integ->key_len);
646 pos += ctr_integ->key_len;
650 clib_memcpy (&child->salt_ei, keymat + pos, salt_len);
655 child->sk_er = vec_new (u8, ctr_encr->key_len);
656 clib_memcpy_fast (child->sk_er, keymat + pos, ctr_encr->key_len);
657 pos += ctr_encr->key_len;
662 child->sk_ar = vec_new (u8, integ_key_len);
663 clib_memcpy_fast (child->sk_ar, keymat + pos, integ_key_len);
664 pos += integ_key_len;
668 clib_memcpy (&child->salt_er, keymat + pos, salt_len);
678 ikev2_compute_nat_sha1 (u64 ispi, u64 rspi, ip_address_t *ia, u16 port)
680 const u32 max_buf_size =
681 sizeof (ispi) + sizeof (rspi) + sizeof (ip6_address_t) + sizeof (u16);
682 u8 buf[max_buf_size];
683 u8 *res = vec_new (u8, 20);
685 clib_memcpy_fast (&buf[0], &ispi, sizeof (ispi));
686 clib_memcpy_fast (&buf[8], &rspi, sizeof (rspi));
687 clib_memcpy_fast (&buf[8 + 8], ip_addr_bytes (ia), ip_address_size (ia));
688 clib_memcpy_fast (&buf[8 + 8 + ip_address_size (ia)], &port, sizeof (port));
689 SHA1 (buf, 2 * sizeof (ispi) + sizeof (port) + ip_address_size (ia), res);
694 ikev2_parse_ke_payload (const void *p, u32 rlen, ikev2_sa_t * sa,
697 const ike_ke_payload_header_t *ke = p;
698 u16 plen = clib_net_to_host_u16 (ke->length);
699 ASSERT (plen >= sizeof (*ke) && plen <= rlen);
700 if (sizeof (*ke) > rlen)
702 ikev2_elog_error ("KE: packet too small");
706 sa->dh_group = clib_net_to_host_u16 (ke->dh_group);
707 vec_reset_length (ke_data[0]);
708 vec_add (ke_data[0], ke->payload, plen - sizeof (*ke));
713 ikev2_parse_nonce_payload (const void *p, u32 rlen, const u8 **nonce)
715 const ike_payload_header_t *ikep = p;
716 u16 plen = clib_net_to_host_u16 (ikep->length);
717 ASSERT (plen >= sizeof (*ikep) && plen <= rlen);
718 int len = plen - sizeof (*ikep);
719 ASSERT (len >= 16 && len <= 256);
720 if (PREDICT_FALSE (len < 16 || len > 256))
722 ikev2_elog_error ("NONCE: bad size");
725 *nonce = ikep->payload;
730 ikev2_check_payload_length (const ike_payload_header_t * ikep, int rlen,
733 if (sizeof (*ikep) > rlen)
735 ikev2_elog_error ("payload: packet too small");
738 *plen = clib_net_to_host_u16 (ikep->length);
739 if (*plen < sizeof (*ikep) || *plen > rlen)
741 ikev2_elog_error ("payload: bad size");
748 ikev2_process_sa_init_req (vlib_main_t *vm, ikev2_sa_t *sa, ike_header_t *ike,
749 udp_header_t *udp, u32 len, u32 sw_if_index)
752 u8 payload = ike->nextpayload;
753 ike_payload_header_t *ikep;
756 ikev2_elog_exchange ("ispi %lx rspi %lx IKE_INIT request received "
757 "from ", clib_net_to_host_u64 (ike->ispi),
758 clib_net_to_host_u64 (ike->rspi),
759 ip_addr_v4 (&sa->iaddr).as_u32,
760 ip_addr_version (&sa->iaddr) == AF_IP4);
762 sa->ispi = clib_net_to_host_u64 (ike->ispi);
763 sa->sw_if_index = sw_if_index;
765 /* store whole IKE payload - needed for PSK auth */
766 vec_reset_length (sa->last_sa_init_req_packet_data);
767 vec_add (sa->last_sa_init_req_packet_data, ike, len);
769 if (len < sizeof (*ike))
771 ikev2_elog_error ("IKE_INIT request too small");
775 len -= sizeof (*ike);
776 while (p < len && payload != IKEV2_PAYLOAD_NONE)
778 ikep = (ike_payload_header_t *) & ike->payload[p];
779 int current_length = len - p;
780 if (!ikev2_check_payload_length (ikep, current_length, &plen))
783 if (payload == IKEV2_PAYLOAD_SA)
785 ikev2_sa_free_proposal_vector (&sa->i_proposals);
786 sa->i_proposals = ikev2_parse_sa_payload (ikep, current_length);
788 else if (payload == IKEV2_PAYLOAD_KE)
790 if (!ikev2_parse_ke_payload (ikep, current_length, sa,
794 else if (payload == IKEV2_PAYLOAD_NONCE)
798 vec_reset_length (sa->i_nonce);
799 if ((nonce_len = ikev2_parse_nonce_payload (ikep, current_length,
802 vec_add (sa->i_nonce, nonce, nonce_len);
804 else if (payload == IKEV2_PAYLOAD_NOTIFY)
807 ikev2_parse_notify_payload (ikep, current_length);
808 if (n->msg_type == IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP)
810 u8 *src_sha = ikev2_compute_nat_sha1 (ike->ispi, 0, &sa->iaddr,
812 if (clib_memcmp (src_sha, n->data, vec_len (src_sha)))
814 if (sa->natt_state == IKEV2_NATT_ENABLED)
815 sa->natt_state = IKEV2_NATT_ACTIVE;
816 ikev2_elog_uint (IKEV2_LOG_DEBUG, "ispi %lx initiator"
817 " behind NAT", sa->ispi);
821 else if (n->msg_type ==
822 IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP)
824 u8 *dst_sha = ikev2_compute_nat_sha1 (ike->ispi, 0, &sa->raddr,
826 if (clib_memcmp (dst_sha, n->data, vec_len (dst_sha)))
828 if (sa->natt_state == IKEV2_NATT_ENABLED)
829 sa->natt_state = IKEV2_NATT_ACTIVE;
830 ikev2_elog_uint (IKEV2_LOG_DEBUG, "ispi %lx responder"
831 " (self) behind NAT", sa->ispi);
837 else if (payload == IKEV2_PAYLOAD_VENDOR)
839 ikev2_parse_vendor_payload (ikep);
843 ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
845 if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
847 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
848 sa->unsupported_cp = payload;
853 payload = ikep->nextpayload;
857 ikev2_set_state (sa, IKEV2_STATE_SA_INIT);
862 ikev2_process_sa_init_resp (vlib_main_t * vm,
863 ikev2_sa_t * sa, ike_header_t * ike,
864 udp_header_t * udp, u32 len)
867 u8 payload = ike->nextpayload;
868 ike_payload_header_t *ikep;
871 sa->ispi = clib_net_to_host_u64 (ike->ispi);
872 sa->rspi = clib_net_to_host_u64 (ike->rspi);
874 ikev2_elog_exchange ("ispi %lx rspi %lx IKE_INIT response received "
875 "from ", sa->ispi, sa->rspi,
876 ip_addr_v4 (&sa->raddr).as_u32,
877 ip_addr_version (&sa->raddr) == AF_IP4);
879 /* store whole IKE payload - needed for PSK auth */
880 vec_reset_length (sa->last_sa_init_res_packet_data);
881 vec_add (sa->last_sa_init_res_packet_data, ike, len);
883 if (sizeof (*ike) > len)
885 ikev2_elog_error ("IKE_INIT response too small");
889 len -= sizeof (*ike);
890 while (p < len && payload != IKEV2_PAYLOAD_NONE)
892 int current_length = len - p;
893 ikep = (ike_payload_header_t *) & ike->payload[p];
894 if (!ikev2_check_payload_length (ikep, current_length, &plen))
897 if (payload == IKEV2_PAYLOAD_SA)
899 ikev2_sa_free_proposal_vector (&sa->r_proposals);
900 sa->r_proposals = ikev2_parse_sa_payload (ikep, current_length);
903 ikev2_set_state (sa, IKEV2_STATE_SA_INIT);
905 clib_host_to_net_u32 (clib_net_to_host_u32 (ike->msgid) + 1);
908 else if (payload == IKEV2_PAYLOAD_KE)
910 if (!ikev2_parse_ke_payload (ikep, current_length, sa,
914 else if (payload == IKEV2_PAYLOAD_NONCE)
918 vec_reset_length (sa->r_nonce);
919 if ((nonce_len = ikev2_parse_nonce_payload (ikep, current_length,
922 vec_add (sa->r_nonce, nonce, nonce_len);
924 else if (payload == IKEV2_PAYLOAD_NOTIFY)
927 ikev2_parse_notify_payload (ikep, current_length);
928 if (n->msg_type == IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP)
930 u8 *src_sha = ikev2_compute_nat_sha1 (ike->ispi, ike->rspi,
933 if (clib_memcmp (src_sha, n->data, vec_len (src_sha)))
935 ikev2_elog_uint (IKEV2_LOG_DEBUG, "ispi %lx responder"
936 " behind NAT, unsupported", sa->ispi);
940 else if (n->msg_type ==
941 IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP)
943 u8 *dst_sha = ikev2_compute_nat_sha1 (ike->ispi, ike->rspi,
946 if (clib_memcmp (dst_sha, n->data, vec_len (dst_sha)))
948 if (sa->natt_state == IKEV2_NATT_ENABLED)
949 sa->natt_state = IKEV2_NATT_ACTIVE;
950 ikev2_elog_uint (IKEV2_LOG_DEBUG, "ispi %lx initiator"
951 " (self) behind NAT", sa->ispi);
957 else if (payload == IKEV2_PAYLOAD_VENDOR)
959 ikev2_parse_vendor_payload (ikep);
963 ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
965 if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
967 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
968 sa->unsupported_cp = payload;
973 payload = ikep->nextpayload;
979 ikev2_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike,
980 u8 * payload, u32 rlen, u32 * out_len)
982 ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
984 u8 last_payload = 0, *hmac = 0, *plaintext = 0;
985 ike_payload_header_t *ikep = 0;
988 ikev2_sa_transform_t *tr_integ;
989 ikev2_sa_transform_t *tr_encr;
991 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG);
993 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR);
994 int is_aead = tr_encr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_GCM_16;
996 if (((!sa->sk_ar || !sa->sk_ai) && !is_aead) || (!sa->sk_ei || !sa->sk_er))
999 if (rlen <= sizeof (*ike))
1002 int len = rlen - sizeof (*ike);
1004 *payload != IKEV2_PAYLOAD_NONE && last_payload != IKEV2_PAYLOAD_SK)
1006 ikep = (ike_payload_header_t *) & ike->payload[p];
1007 int current_length = len - p;
1008 if (!ikev2_check_payload_length (ikep, current_length, &plen))
1011 if (*payload == IKEV2_PAYLOAD_SK)
1013 last_payload = *payload;
1017 ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
1019 if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
1021 sa->unsupported_cp = *payload;
1026 *payload = ikep->nextpayload;
1030 if (last_payload != IKEV2_PAYLOAD_SK)
1032 ikev2_elog_error ("Last payload must be SK");
1038 if (plen < sizeof (*ikep) + IKEV2_GCM_ICV_SIZE)
1041 plen -= sizeof (*ikep) + IKEV2_GCM_ICV_SIZE;
1042 u8 *aad = (u8 *) ike;
1043 u32 aad_len = ikep->payload - aad;
1044 u8 *tag = ikep->payload + plen;
1046 int rc = ikev2_decrypt_aead_data (ptd, sa, tr_encr, ikep->payload,
1047 plen, aad, aad_len, tag, &dlen);
1051 plaintext = ikep->payload + IKEV2_GCM_IV_SIZE;
1056 if (rlen < tr_integ->key_trunc)
1060 ikev2_calc_integr (tr_integ, sa->is_initiator ? sa->sk_ar : sa->sk_ai,
1061 (u8 *) ike, rlen - tr_integ->key_trunc);
1063 if (plen < sizeof (*ikep) + tr_integ->key_trunc)
1066 plen = plen - sizeof (*ikep) - tr_integ->key_trunc;
1068 if (clib_memcmp (hmac, &ikep->payload[plen], tr_integ->key_trunc))
1070 ikev2_elog_error ("message integrity check failed");
1076 int rc = ikev2_decrypt_data (ptd, sa, tr_encr, ikep->payload, plen,
1081 plaintext = ikep->payload + tr_encr->block_size;
1089 ikev2_is_id_equal (const ikev2_id_t *i1, const ikev2_id_t *i2)
1091 if (i1->type != i2->type)
1094 if (vec_len (i1->data) != vec_len (i2->data))
1097 if (clib_memcmp (i1->data, i2->data, vec_len (i1->data)))
1104 ikev2_initial_contact_cleanup_internal (ikev2_main_per_thread_data_t * ptd,
1107 ikev2_main_t *km = &ikev2_main;
1110 ikev2_child_sa_t *c;
1112 /* find old IKE SAs with the same authenticated identity */
1113 pool_foreach (tmp, ptd->sas) {
1114 if (!ikev2_is_id_equal (&tmp->i_id, &sa->i_id)
1115 || !ikev2_is_id_equal(&tmp->r_id, &sa->r_id))
1118 if (sa->rspi != tmp->rspi)
1119 vec_add1(delete, tmp - ptd->sas);
1122 for (i = 0; i < vec_len (delete); i++)
1124 tmp = pool_elt_at_index (ptd->sas, delete[i]);
1125 vec_foreach (c, tmp->childs)
1127 ikev2_delete_tunnel_interface (km->vnet_main, tmp, c);
1129 ikev2_delete_sa (ptd, tmp);
1133 sa->initial_contact = 0;
1137 ikev2_initial_contact_cleanup (ikev2_main_per_thread_data_t * ptd,
1140 ikev2_main_t *km = &ikev2_main;
1142 if (!sa->initial_contact)
1147 ikev2_initial_contact_cleanup_internal (ptd, sa);
1151 vec_foreach (ptd, km->per_thread_data)
1152 ikev2_initial_contact_cleanup_internal (ptd, sa);
1154 sa->initial_contact = 0;
1158 ikev2_parse_id_payload (const void *p, u16 rlen, ikev2_id_t * sa_id)
1160 const ike_id_payload_header_t *id = p;
1161 u16 plen = clib_net_to_host_u16 (id->length);
1162 if (plen < sizeof (*id) || plen > rlen)
1165 sa_id->type = id->id_type;
1166 vec_reset_length (sa_id->data);
1167 vec_add (sa_id->data, id->payload, plen - sizeof (*id));
1173 ikev2_parse_auth_payload (const void *p, u32 rlen, ikev2_auth_t * a)
1175 const ike_auth_payload_header_t *ah = p;
1176 u16 plen = clib_net_to_host_u16 (ah->length);
1178 a->method = ah->auth_method;
1179 vec_reset_length (a->data);
1180 vec_add (a->data, ah->payload, plen - sizeof (*ah));
1185 ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa,
1186 ike_header_t * ike, u32 len)
1189 ikev2_child_sa_t *first_child_sa;
1190 u8 payload = ike->nextpayload;
1192 ike_payload_header_t *ikep;
1196 ikev2_elog_exchange ("ispi %lx rspi %lx EXCHANGE_IKE_AUTH received "
1197 "from ", clib_host_to_net_u64 (ike->ispi),
1198 clib_host_to_net_u64 (ike->rspi),
1200 ip_addr_v4 (&sa->raddr).as_u32 :
1201 ip_addr_v4 (&sa->iaddr).as_u32,
1202 ip_addr_version (&sa->raddr) == AF_IP4);
1204 ikev2_calc_keys (sa);
1206 plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload, len, &dlen);
1210 if (sa->unsupported_cp)
1212 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
1218 /* select or create 1st child SA */
1219 if (sa->is_initiator)
1221 first_child_sa = &sa->childs[0];
1225 ikev2_sa_free_all_child_sa (&sa->childs);
1226 vec_add2 (sa->childs, first_child_sa, 1);
1230 /* process encrypted payload */
1231 while (p < dlen && payload != IKEV2_PAYLOAD_NONE)
1233 ikep = (ike_payload_header_t *) & plaintext[p];
1234 int current_length = dlen - p;
1235 if (!ikev2_check_payload_length (ikep, current_length, &plen))
1238 if (payload == IKEV2_PAYLOAD_SA) /* 33 */
1240 if (sa->is_initiator)
1242 ikev2_sa_free_proposal_vector (&first_child_sa->r_proposals);
1243 first_child_sa->r_proposals = ikev2_parse_sa_payload (ikep,
1248 ikev2_sa_free_proposal_vector (&first_child_sa->i_proposals);
1249 first_child_sa->i_proposals = ikev2_parse_sa_payload (ikep,
1253 else if (payload == IKEV2_PAYLOAD_IDI) /* 35 */
1255 if (!ikev2_parse_id_payload (ikep, current_length, &sa->i_id))
1258 else if (payload == IKEV2_PAYLOAD_IDR) /* 36 */
1260 if (!ikev2_parse_id_payload (ikep, current_length, &sa->r_id))
1263 else if (payload == IKEV2_PAYLOAD_AUTH) /* 39 */
1265 if (sa->is_initiator)
1267 if (!ikev2_parse_auth_payload (ikep, current_length,
1273 if (!ikev2_parse_auth_payload (ikep, current_length,
1278 else if (payload == IKEV2_PAYLOAD_NOTIFY) /* 41 */
1281 ikev2_parse_notify_payload (ikep, current_length);
1282 if (n->msg_type == IKEV2_NOTIFY_MSG_INITIAL_CONTACT)
1284 sa->initial_contact = 1;
1288 else if (payload == IKEV2_PAYLOAD_VENDOR) /* 43 */
1290 ikev2_parse_vendor_payload (ikep);
1292 else if (payload == IKEV2_PAYLOAD_TSI) /* 44 */
1294 vec_free (first_child_sa->tsi);
1295 first_child_sa->tsi = ikev2_parse_ts_payload (ikep, current_length);
1297 else if (payload == IKEV2_PAYLOAD_TSR) /* 45 */
1299 vec_free (first_child_sa->tsr);
1300 first_child_sa->tsr = ikev2_parse_ts_payload (ikep, current_length);
1304 ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
1307 if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
1309 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
1310 sa->unsupported_cp = payload;
1315 payload = ikep->nextpayload;
1322 ikev2_set_state (sa, IKEV2_STATE_DELETED, ": malformed IKE_AUTH");
1327 ikev2_process_informational_req (vlib_main_t * vm,
1328 ikev2_sa_t * sa, ike_header_t * ike, u32 len)
1331 u8 payload = ike->nextpayload;
1333 ike_payload_header_t *ikep;
1335 ikev2_notify_t *n = 0;
1337 sa->liveness_retries = 0;
1338 ikev2_elog_exchange ("ispi %lx rspi %lx INFORMATIONAL received "
1339 "from ", clib_host_to_net_u64 (ike->ispi),
1340 clib_host_to_net_u64 (ike->rspi),
1341 ip_addr_v4 (&sa->iaddr).as_u32,
1342 ip_addr_version (&sa->iaddr) == AF_IP4);
1344 plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload, len, &dlen);
1349 /* process encrypted payload */
1351 while (p < dlen && payload != IKEV2_PAYLOAD_NONE)
1353 u32 current_length = dlen - p;
1354 if (p + sizeof (*ikep) > dlen)
1357 ikep = (ike_payload_header_t *) & plaintext[p];
1358 u16 plen = clib_net_to_host_u16 (ikep->length);
1360 if (plen < sizeof (*ikep) || plen > current_length)
1363 if (payload == IKEV2_PAYLOAD_NOTIFY) /* 41 */
1365 n = ikev2_parse_notify_payload (ikep, current_length);
1368 if (n->msg_type == IKEV2_NOTIFY_MSG_AUTHENTICATION_FAILED)
1369 ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
1372 else if (payload == IKEV2_PAYLOAD_DELETE) /* 42 */
1374 sa->del = ikev2_parse_delete_payload (ikep, current_length);
1376 else if (payload == IKEV2_PAYLOAD_VENDOR) /* 43 */
1378 ikev2_parse_vendor_payload (ikep);
1382 ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
1384 if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
1386 sa->unsupported_cp = payload;
1390 payload = ikep->nextpayload;
1397 ikev2_process_create_child_sa_rekey (ikev2_sa_t *sa, ikev2_sa_t *sar,
1398 ikev2_rekey_t *rekey,
1399 ikev2_sa_proposal_t *proposal,
1400 ikev2_ts_t *tsi, ikev2_ts_t *tsr,
1401 const u8 *nonce, int nonce_len)
1403 ikev2_sa_transform_t *tr;
1405 rekey->i_proposal = proposal;
1406 rekey->r_proposal = ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
1411 ikev2_sa_get_td_for_type (rekey->r_proposal, IKEV2_TRANSFORM_TYPE_DH);
1413 if (!tr || tr->dh_type != sar->dh_group)
1415 rekey->notify_type = IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD;
1416 ikev2_sa_free_proposal_vector (&rekey->r_proposal);
1420 vec_free (sa->dh_shared_key);
1421 vec_free (sa->dh_private_key);
1422 vec_free (sa->i_dh_data);
1423 vec_free (sa->r_dh_data);
1425 sa->dh_group = sar->dh_group;
1426 sa->i_dh_data = sar->i_dh_data;
1429 ikev2_generate_dh (sa, tr);
1433 vec_reset_length (sa->i_nonce);
1434 vec_add (sa->i_nonce, nonce, nonce_len);
1436 vec_validate (sa->r_nonce, nonce_len - 1);
1437 RAND_bytes ((u8 *) sa->r_nonce, nonce_len);
1446 ikev2_complete_sa_rekey (ikev2_sa_t *sa_new, ikev2_sa_t *sa_old,
1447 ikev2_sa_rekey_t *sa_rekey)
1451 sa_new->new_child = 0;
1452 sa_new->sa_rekey = 0;
1453 sa_new->last_sa_init_req_packet_data = 0;
1454 sa_new->last_sa_init_res_packet_data = 0;
1455 sa_new->last_msg_id = ~0;
1456 sa_new->last_res_packet_data = 0;
1457 sa_new->last_init_msg_id = 0;
1458 clib_memset (&sa_new->stats, 0, sizeof (sa_new->stats));
1460 sa_new->ispi = sa_rekey->ispi;
1461 sa_new->rspi = sa_rekey->rspi;
1462 sa_new->i_nonce = sa_rekey->i_nonce;
1463 sa_new->r_nonce = sa_rekey->r_nonce;
1464 sa_new->dh_group = sa_rekey->dh_group;
1465 sa_new->dh_shared_key = sa_rekey->dh_shared_key;
1466 sa_new->dh_private_key = sa_rekey->dh_private_key;
1467 sa_new->i_dh_data = sa_rekey->i_dh_data;
1468 sa_new->r_dh_data = sa_rekey->r_dh_data;
1469 sa_new->i_proposals = sa_rekey->i_proposals;
1470 sa_new->r_proposals = sa_rekey->r_proposals;
1479 ikev2_calc_keys_rekey (sa_new, sa_old);
1481 sa_new->i_auth.data = vec_dup (sa_old->i_auth.data);
1482 sa_new->i_auth.key = sa_old->i_auth.key;
1483 if (sa_new->i_auth.key)
1484 EVP_PKEY_up_ref (sa_new->i_auth.key);
1486 sa_new->r_auth.data = vec_dup (sa_old->r_auth.data);
1487 sa_new->r_auth.key = sa_old->r_auth.key;
1488 if (sa_new->r_auth.key)
1489 EVP_PKEY_up_ref (sa_new->r_auth.key);
1491 sa_new->i_id.data = vec_dup (sa_old->i_id.data);
1492 sa_new->r_id.data = vec_dup (sa_old->r_id.data);
1494 sa_old->is_tun_itf_set = 0;
1495 sa_old->tun_itf = ~0;
1496 sa_old->old_id_expiration = 0;
1497 sa_old->current_remote_id_mask = 0;
1498 sa_old->old_remote_id = 0;
1499 sa_old->old_remote_id_present = 0;
1501 sa_old->sw_if_index = ~0;
1505 ikev2_process_sa_rekey (ikev2_sa_t *sa_new, ikev2_sa_t *sa_old,
1506 ikev2_sa_rekey_t *sa_rekey)
1508 ikev2_sa_transform_t *tr;
1510 if (ikev2_generate_sa_init_data (sa_new) != IKEV2_GENERATE_SA_INIT_OK)
1512 sa_rekey->notify_type = IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD;
1516 sa_new->r_proposals =
1517 ikev2_select_proposal (sa_new->i_proposals, IKEV2_PROTOCOL_IKE);
1519 tr = ikev2_sa_get_td_for_type (sa_new->r_proposals, IKEV2_TRANSFORM_TYPE_DH);
1520 if (!tr || tr->dh_type != sa_new->dh_group)
1522 sa_rekey->notify_type = IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD;
1526 sa_rekey->notify_type = 0;
1527 sa_rekey->ispi = sa_new->i_proposals[0].spi;
1528 sa_rekey->rspi = sa_new->r_proposals[0].spi;
1529 sa_rekey->i_nonce = sa_new->i_nonce;
1530 sa_rekey->r_nonce = sa_new->r_nonce;
1531 sa_rekey->dh_group = sa_new->dh_group;
1532 sa_rekey->dh_shared_key = sa_new->dh_shared_key;
1533 sa_rekey->dh_private_key = sa_new->dh_private_key;
1534 sa_rekey->i_dh_data = sa_new->i_dh_data;
1535 sa_rekey->r_dh_data = sa_new->r_dh_data;
1536 sa_rekey->i_proposals = sa_new->i_proposals;
1537 sa_rekey->r_proposals = sa_new->r_proposals;
1539 sa_new->i_nonce = 0;
1540 sa_new->r_nonce = 0;
1541 sa_new->dh_shared_key = 0;
1542 sa_new->dh_private_key = 0;
1543 sa_new->i_dh_data = 0;
1544 sa_new->r_dh_data = 0;
1545 sa_new->i_proposals = 0;
1546 sa_new->r_proposals = 0;
1550 ikev2_process_create_child_sa_req (vlib_main_t * vm,
1551 ikev2_sa_t * sa, ike_header_t * ike,
1555 u8 payload = ike->nextpayload;
1557 ikev2_rekey_t *rekey;
1558 ike_payload_header_t *ikep;
1559 ikev2_notify_t *n = 0;
1560 ikev2_ts_t *tsi = 0;
1561 ikev2_ts_t *tsr = 0;
1562 ikev2_sa_proposal_t *proposal = 0;
1563 ikev2_child_sa_t *child_sa;
1566 const u8 *nonce = 0;
1570 clib_memset (&sar, 0, sizeof (sar));
1572 if (sa->is_initiator)
1573 src = ip_addr_v4 (&sa->raddr).as_u32;
1575 src = ip_addr_v4 (&sa->iaddr).as_u32;
1577 ikev2_elog_exchange ("ispi %lx rspi %lx CREATE_CHILD_SA received from",
1578 clib_host_to_net_u64 (ike->ispi),
1579 clib_host_to_net_u64 (ike->rspi), src,
1580 ip_addr_version (&sa->raddr) == AF_IP4);
1582 plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload, len, &dlen);
1585 goto cleanup_and_exit;
1587 /* process encrypted payload */
1589 while (payload != IKEV2_PAYLOAD_NONE)
1591 ikep = (ike_payload_header_t *) & plaintext[p];
1592 int current_length = dlen - p;
1593 if (!ikev2_check_payload_length (ikep, current_length, &plen))
1594 goto cleanup_and_exit;
1596 if (payload == IKEV2_PAYLOAD_SA)
1598 proposal = ikev2_parse_sa_payload (ikep, current_length);
1600 else if (payload == IKEV2_PAYLOAD_KE)
1602 if (!ikev2_parse_ke_payload (ikep, current_length, &sar,
1604 goto cleanup_and_exit;
1606 else if (payload == IKEV2_PAYLOAD_NOTIFY)
1609 n0 = ikev2_parse_notify_payload (ikep, current_length);
1610 if (n0->msg_type == IKEV2_NOTIFY_MSG_REKEY_SA)
1618 else if (payload == IKEV2_PAYLOAD_DELETE)
1620 sa->del = ikev2_parse_delete_payload (ikep, current_length);
1622 else if (payload == IKEV2_PAYLOAD_VENDOR)
1624 ikev2_parse_vendor_payload (ikep);
1626 else if (payload == IKEV2_PAYLOAD_NONCE)
1628 nonce_len = ikev2_parse_nonce_payload (ikep, current_length, &nonce);
1630 goto cleanup_and_exit;
1632 else if (payload == IKEV2_PAYLOAD_TSI)
1634 tsi = ikev2_parse_ts_payload (ikep, current_length);
1636 else if (payload == IKEV2_PAYLOAD_TSR)
1638 tsr = ikev2_parse_ts_payload (ikep, current_length);
1642 ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
1644 if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
1646 sa->unsupported_cp = payload;
1647 goto cleanup_and_exit;
1650 payload = ikep->nextpayload;
1654 if (!proposal || !nonce ||
1655 (proposal->protocol_id != IKEV2_PROTOCOL_ESP &&
1656 proposal->protocol_id != IKEV2_PROTOCOL_IKE))
1657 goto cleanup_and_exit;
1659 if (sa->is_initiator)
1662 if (vec_len (rekey) == 0)
1663 goto cleanup_and_exit;
1664 rekey->notify_type = 0;
1665 rekey->protocol_id = proposal->protocol_id;
1667 ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
1668 rekey->i_proposal->spi = rekey->spi;
1669 rekey->r_proposal = proposal;
1673 vec_reset_length (sa->r_nonce);
1674 vec_add (sa->r_nonce, nonce, nonce_len);
1675 child_sa = ikev2_sa_get_child (sa, rekey->ispi, IKEV2_PROTOCOL_ESP, 1);
1678 child_sa->rekey_retries = 0;
1685 child_sa = ikev2_sa_get_child (sa, n->spi, n->protocol_id, 1);
1688 ikev2_elog_uint (IKEV2_LOG_ERROR, "child SA spi %lx not found",
1690 goto cleanup_and_exit;
1692 vec_add2 (sa->rekey, rekey, 1);
1693 rekey->notify_type = 0;
1695 rekey->protocol_id = n->protocol_id;
1696 rekey->spi = n->spi;
1697 if (sa->old_remote_id_present)
1699 rekey->notify_type = IKEV2_NOTIFY_MSG_TEMPORARY_FAILURE;
1700 vec_free (proposal);
1704 else if (!ikev2_process_create_child_sa_rekey (
1705 sa, &sar, rekey, proposal, tsi, tsr, nonce, nonce_len))
1707 vec_free (proposal);
1712 else if (proposal[0].protocol_id == IKEV2_PROTOCOL_IKE)
1714 ikev2_sa_rekey_t *sa_rekey;
1716 goto cleanup_and_exit;
1717 sar.i_proposals = proposal;
1718 vec_add (sar.i_nonce, nonce, nonce_len);
1719 vec_add2 (sa->sa_rekey, sa_rekey, 1);
1720 ikev2_process_sa_rekey (&sar, sa, sa_rekey);
1724 /* create new child SA */
1725 vec_add2 (sa->new_child, rekey, 1);
1726 rekey->notify_type = 0;
1728 if (!ikev2_process_create_child_sa_rekey (
1729 sa, &sar, rekey, proposal, tsi, tsr, nonce, nonce_len))
1731 vec_free (proposal);
1738 ikev2_sa_free_all_vec (&sar);
1743 vec_free (proposal);
1746 ikev2_sa_free_all_vec (&sar);
1751 ikev2_sa_generate_authmsg (ikev2_sa_t * sa, int is_responder)
1759 ikev2_sa_transform_t *tr_prf;
1762 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
1768 nonce = sa->i_nonce;
1769 packet_data = sa->last_sa_init_res_packet_data;
1775 nonce = sa->r_nonce;
1776 packet_data = sa->last_sa_init_req_packet_data;
1779 data = vec_new (u8, 4);
1781 vec_append (data, id->data);
1783 u8 *id_hash = ikev2_calc_prf (tr_prf, key, data);
1784 vec_append (authmsg, packet_data);
1785 vec_append (authmsg, nonce);
1786 vec_append (authmsg, id_hash);
1794 ikev2_match_profile (const ikev2_profile_t *p, const ikev2_id_t *id_loc,
1795 const ikev2_id_t *id_rem, int is_initiator)
1797 /* on the initiator, IDi is always present and must match
1798 * however on the responder, IDr (which is our local id) is optional */
1799 if ((is_initiator || id_loc->type != 0) &&
1800 !ikev2_is_id_equal (&p->loc_id, id_loc))
1803 /* on the initiator, we might not have configured a specific remote id
1804 * however on the responder, the remote id should always be configured */
1805 if ((!is_initiator || p->rem_id.type != 0) &&
1806 !ikev2_is_id_equal (&p->rem_id, id_rem))
1813 ikev2_ts_cmp (ikev2_ts_t * ts1, ikev2_ts_t * ts2)
1815 if (ts1->ts_type == ts2->ts_type && ts1->protocol_id == ts2->protocol_id &&
1816 ts1->start_port == ts2->start_port && ts1->end_port == ts2->end_port &&
1817 !ip_address_cmp (&ts1->start_addr, &ts2->start_addr) &&
1818 !ip_address_cmp (&ts1->end_addr, &ts2->end_addr))
1825 ikev2_sa_match_ts (ikev2_sa_t * sa)
1827 ikev2_main_t *km = &ikev2_main;
1829 ikev2_ts_t *ts, *p_tsi, *p_tsr, *tsi = 0, *tsr = 0;
1830 ikev2_id_t *id_rem, *id_loc;
1832 pool_foreach (p, km->profiles) {
1834 if (sa->is_initiator)
1849 if (!ikev2_match_profile (p, id_loc, id_rem, sa->is_initiator))
1852 sa->profile_index = p - km->profiles;
1854 vec_foreach(ts, sa->childs[0].tsi)
1856 if (ikev2_ts_cmp(p_tsi, ts))
1858 vec_add1 (tsi, ts[0]);
1863 vec_foreach(ts, sa->childs[0].tsr)
1865 if (ikev2_ts_cmp(p_tsr, ts))
1867 vec_add1 (tsr, ts[0]);
1877 vec_free (sa->childs[0].tsi);
1878 vec_free (sa->childs[0].tsr);
1879 sa->childs[0].tsi = tsi;
1880 sa->childs[0].tsr = tsr;
1886 ikev2_set_state (sa, IKEV2_STATE_TS_UNACCEPTABLE);
1890 static ikev2_profile_t *
1891 ikev2_select_profile (ikev2_main_t *km, ikev2_sa_t *sa,
1892 ikev2_sa_transform_t *tr_prf, u8 *key_pad)
1894 ikev2_profile_t *ret = 0, *p;
1895 ikev2_id_t *id_rem, *id_loc;
1896 ikev2_auth_t *sa_auth;
1897 u8 *authmsg, *psk = 0, *auth = 0;
1899 authmsg = ikev2_sa_generate_authmsg (sa, sa->is_initiator);
1901 if (sa->is_initiator)
1905 sa_auth = &sa->r_auth;
1911 sa_auth = &sa->i_auth;
1914 pool_foreach (p, km->profiles)
1916 if (!ikev2_match_profile (p, id_loc, id_rem, sa->is_initiator))
1919 if (sa_auth->method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
1921 if (!p->auth.data ||
1922 p->auth.method != IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
1925 psk = ikev2_calc_prf (tr_prf, p->auth.data, key_pad);
1926 auth = ikev2_calc_prf (tr_prf, psk, authmsg);
1928 if (!clib_memcmp (auth, sa_auth->data, vec_len (sa_auth->data)))
1930 ikev2_set_state (sa, IKEV2_STATE_AUTHENTICATED);
1937 ikev2_elog_uint (IKEV2_LOG_ERROR,
1938 "shared key mismatch! ispi %lx", sa->ispi);
1941 else if (sa_auth->method == IKEV2_AUTH_METHOD_RSA_SIG)
1943 if (p->auth.method != IKEV2_AUTH_METHOD_RSA_SIG)
1946 if (ikev2_verify_sign (p->auth.key, sa_auth->data, authmsg) == 1)
1948 ikev2_set_state (sa, IKEV2_STATE_AUTHENTICATED);
1954 ikev2_elog_uint (IKEV2_LOG_ERROR,
1955 "cert verification failed! ispi %lx", sa->ispi);
1964 ikev2_sa_auth (ikev2_sa_t *sa)
1966 ikev2_main_t *km = &ikev2_main;
1967 ikev2_profile_t *sel_p = 0;
1968 ikev2_sa_transform_t *tr_prf;
1969 u8 *psk, *authmsg, *key_pad;
1972 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
1974 /* only shared key and rsa signature */
1975 if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC ||
1976 sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG))
1978 ikev2_elog_uint (IKEV2_LOG_ERROR, "unsupported authentication method %u",
1980 ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
1984 key_pad = format (0, "%s", IKEV2_KEY_PAD);
1985 sel_p = ikev2_select_profile (km, sa, tr_prf, key_pad);
1989 ASSERT (sa->state == IKEV2_STATE_AUTHENTICATED);
1990 sa->udp_encap = sel_p->udp_encap;
1991 sa->ipsec_over_udp_port = sel_p->ipsec_over_udp_port;
1993 if (!sa->is_initiator)
1995 vec_free (sa->r_id.data);
1996 sa->r_id.data = vec_dup (sel_p->loc_id.data);
1997 sa->r_id.type = sel_p->loc_id.type;
1998 sa->i_id.data = vec_dup (sel_p->rem_id.data);
1999 sa->i_id.type = sel_p->rem_id.type;
2001 /* generate our auth data */
2002 authmsg = ikev2_sa_generate_authmsg (sa, 1);
2003 if (sel_p->auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
2005 vec_free (sa->r_auth.data);
2006 psk = ikev2_calc_prf (tr_prf, sel_p->auth.data, key_pad);
2007 sa->r_auth.data = ikev2_calc_prf (tr_prf, psk, authmsg);
2008 sa->r_auth.method = IKEV2_AUTH_METHOD_SHARED_KEY_MIC;
2011 else if (sel_p->auth.method == IKEV2_AUTH_METHOD_RSA_SIG)
2013 vec_free (sa->r_auth.data);
2014 sa->r_auth.data = ikev2_calc_sign (km->pkey, authmsg);
2015 sa->r_auth.method = IKEV2_AUTH_METHOD_RSA_SIG;
2019 /* select transforms for 1st child sa */
2020 ikev2_sa_free_proposal_vector (&sa->childs[0].r_proposals);
2021 sa->childs[0].r_proposals =
2022 ikev2_select_proposal (sa->childs[0].i_proposals,
2023 IKEV2_PROTOCOL_ESP);
2025 if (~0 != sel_p->tun_itf)
2027 sa->is_tun_itf_set = 1;
2028 sa->tun_itf = sel_p->tun_itf;
2034 ikev2_elog_uint (IKEV2_LOG_ERROR, "authentication failed, no matching "
2035 "profile found! ispi %lx", sa->ispi);
2036 ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
2042 ikev2_sa_auth_init (ikev2_sa_t * sa)
2044 ikev2_main_t *km = &ikev2_main;
2045 u8 *authmsg, *key_pad, *psk = 0;
2046 ikev2_sa_transform_t *tr_prf;
2049 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
2051 /* only shared key and rsa signature */
2052 if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC ||
2053 sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG))
2055 ikev2_elog_uint (IKEV2_LOG_ERROR,
2056 "unsupported authentication method %u",
2058 ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
2062 authmsg = ikev2_sa_generate_authmsg (sa, 0);
2064 if (sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
2066 key_pad = format (0, "%s", IKEV2_KEY_PAD);
2067 psk = ikev2_calc_prf (tr_prf, sa->i_auth.data, key_pad);
2068 vec_free (sa->i_auth.data);
2069 sa->i_auth.data = ikev2_calc_prf (tr_prf, psk, authmsg);
2070 sa->i_auth.method = IKEV2_AUTH_METHOD_SHARED_KEY_MIC;
2074 else if (sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG)
2076 vec_free (sa->i_auth.data);
2077 sa->i_auth.data = ikev2_calc_sign (km->pkey, authmsg);
2078 sa->i_auth.method = IKEV2_AUTH_METHOD_RSA_SIG;
2084 ikev2_mk_local_sa_id (u32 sai, u32 ci, u32 ti)
2086 return (0x80000000 | (ti << 24) | (sai << 12) | ci);
2090 ikev2_mk_remote_sa_id (u32 sai, u32 ci, u32 ti)
2092 return (0xc0000000 | (ti << 24) | (sai << 12) | ci);
2102 ipsec_sa_flags_t flags;
2105 ipsec_crypto_alg_t encr_type;
2106 ipsec_integ_alg_t integ_type;
2107 ip_address_t local_ip;
2108 ip_address_t remote_ip;
2109 ipsec_key_t loc_ckey, rem_ckey, loc_ikey, rem_ikey;
2111 u32 old_remote_sa_id;
2112 u16 ipsec_over_udp_port;
2115 } ikev2_add_ipsec_tunnel_args_t;
2118 ikev2_add_tunnel_from_main (ikev2_add_ipsec_tunnel_args_t * a)
2120 ikev2_main_t *km = &ikev2_main;
2124 .t_flags = TUNNEL_FLAG_NONE,
2125 .t_encap_decap_flags = TUNNEL_ENCAP_DECAP_FLAG_NONE,
2127 .t_mode = TUNNEL_MODE_P2P,
2130 .t_src = a->remote_ip,
2131 .t_dst = a->local_ip,
2133 tunnel_t tun_out = {
2134 .t_flags = TUNNEL_FLAG_NONE,
2135 .t_encap_decap_flags = TUNNEL_ENCAP_DECAP_FLAG_NONE,
2137 .t_mode = TUNNEL_MODE_P2P,
2140 .t_src = a->local_ip,
2141 .t_dst = a->remote_ip,
2144 if (~0 == a->sw_if_index)
2146 /* no tunnel associated with the SA/profile - create a new one */
2147 rv = ipip_add_tunnel (IPIP_TRANSPORT_IP4, ~0, &ip_addr_46 (&a->local_ip),
2148 &ip_addr_46 (&a->remote_ip), 0,
2149 TUNNEL_ENCAP_DECAP_FLAG_NONE, IP_DSCP_CS0,
2150 TUNNEL_MODE_P2P, &sw_if_index);
2152 if (rv == VNET_API_ERROR_IF_ALREADY_EXISTS)
2154 if (hash_get (km->sw_if_indices, sw_if_index))
2155 /* interface is managed by IKE; proceed with updating SAs */
2158 hash_set1 (km->sw_if_indices, sw_if_index);
2162 sw_if_index = a->sw_if_index;
2163 vnet_sw_interface_admin_up (vnet_get_main (), sw_if_index);
2168 ikev2_elog_uint (IKEV2_LOG_ERROR,
2169 "installing ipip tunnel failed! local spi: %x",
2175 vec_add1 (sas_in, a->remote_sa_id);
2178 ipsec_tun_protect_del (sw_if_index, NULL);
2180 /* replace local SA immediately */
2181 ipsec_sa_unlock_id (a->local_sa_id);
2183 /* keep the old sa */
2184 vec_add1 (sas_in, a->old_remote_sa_id);
2187 rv = ipsec_sa_add_and_lock (a->local_sa_id, a->local_spi, IPSEC_PROTOCOL_ESP,
2188 a->encr_type, &a->loc_ckey, a->integ_type,
2189 &a->loc_ikey, a->flags, a->salt_local,
2190 a->src_port, a->dst_port, 0, &tun_out, NULL);
2194 rv = ipsec_sa_add_and_lock (
2195 a->remote_sa_id, a->remote_spi, IPSEC_PROTOCOL_ESP, a->encr_type,
2196 &a->rem_ckey, a->integ_type, &a->rem_ikey,
2197 (a->flags | IPSEC_SA_FLAG_IS_INBOUND), a->salt_remote,
2198 a->ipsec_over_udp_port, a->ipsec_over_udp_port, 0, &tun_in, NULL);
2202 rv = ipsec_tun_protect_update (sw_if_index, NULL, a->local_sa_id, sas_in);
2209 ipsec_sa_unlock_id (a->remote_sa_id);
2211 ipsec_sa_unlock_id (a->local_sa_id);
2217 ikev2_create_tunnel_interface (vlib_main_t *vm, ikev2_sa_t *sa,
2218 ikev2_child_sa_t *child, u32 sa_index,
2219 u32 child_index, u8 is_rekey, u8 kex)
2221 u32 thread_index = vlib_get_thread_index ();
2222 ikev2_main_t *km = &ikev2_main;
2223 ipsec_crypto_alg_t encr_type;
2224 ipsec_integ_alg_t integ_type;
2225 ikev2_profile_t *p = 0;
2226 ikev2_sa_transform_t *tr;
2227 ikev2_sa_proposal_t *proposals;
2229 ikev2_add_ipsec_tunnel_args_t a;
2231 clib_memset (&a, 0, sizeof (a));
2233 if (!child->r_proposals)
2235 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
2239 if (sa->is_initiator)
2241 ip_address_copy (&a.local_ip, &sa->iaddr);
2242 ip_address_copy (&a.remote_ip, &sa->raddr);
2243 proposals = child->r_proposals;
2244 a.local_spi = child->r_proposals[0].spi;
2245 a.remote_spi = child->i_proposals[0].spi;
2249 ip_address_copy (&a.local_ip, &sa->raddr);
2250 ip_address_copy (&a.remote_ip, &sa->iaddr);
2251 proposals = child->i_proposals;
2252 a.local_spi = child->i_proposals[0].spi;
2253 a.remote_spi = child->r_proposals[0].spi;
2256 a.flags = IPSEC_SA_FLAG_USE_ANTI_REPLAY;
2259 a.flags |= IPSEC_SA_FLAG_IS_TUNNEL;
2260 a.flags |= IPSEC_SA_FLAG_UDP_ENCAP;
2262 if (ikev2_natt_active (sa))
2263 a.flags |= IPSEC_SA_FLAG_UDP_ENCAP;
2264 a.is_rekey = is_rekey;
2266 tr = ikev2_sa_get_td_for_type (proposals, IKEV2_TRANSFORM_TYPE_ESN);
2267 if (tr && tr->esn_type)
2268 a.flags |= IPSEC_SA_FLAG_USE_ESN;
2270 tr = ikev2_sa_get_td_for_type (proposals, IKEV2_TRANSFORM_TYPE_ENCR);
2273 if (tr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC && tr->key_len)
2275 switch (tr->key_len)
2278 encr_type = IPSEC_CRYPTO_ALG_AES_CBC_128;
2281 encr_type = IPSEC_CRYPTO_ALG_AES_CBC_192;
2284 encr_type = IPSEC_CRYPTO_ALG_AES_CBC_256;
2287 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
2292 else if (tr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_GCM_16
2295 switch (tr->key_len)
2298 encr_type = IPSEC_CRYPTO_ALG_AES_GCM_128;
2301 encr_type = IPSEC_CRYPTO_ALG_AES_GCM_192;
2304 encr_type = IPSEC_CRYPTO_ALG_AES_GCM_256;
2307 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
2315 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
2321 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
2324 a.encr_type = encr_type;
2328 tr = ikev2_sa_get_td_for_type (proposals, IKEV2_TRANSFORM_TYPE_INTEG);
2331 switch (tr->integ_type)
2333 case IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA2_256_128:
2334 integ_type = IPSEC_INTEG_ALG_SHA_256_128;
2336 case IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA2_384_192:
2337 integ_type = IPSEC_INTEG_ALG_SHA_384_192;
2339 case IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA2_512_256:
2340 integ_type = IPSEC_INTEG_ALG_SHA_512_256;
2342 case IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA1_96:
2343 integ_type = IPSEC_INTEG_ALG_SHA1_96;
2346 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
2352 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
2358 integ_type = IPSEC_INTEG_ALG_NONE;
2361 a.integ_type = integ_type;
2362 ikev2_calc_child_keys (sa, child, kex);
2364 if (sa->is_initiator)
2366 ipsec_mk_key (&a.loc_ikey, child->sk_ai, vec_len (child->sk_ai));
2367 ipsec_mk_key (&a.rem_ikey, child->sk_ar, vec_len (child->sk_ar));
2368 ipsec_mk_key (&a.loc_ckey, child->sk_ei, vec_len (child->sk_ei));
2369 ipsec_mk_key (&a.rem_ckey, child->sk_er, vec_len (child->sk_er));
2372 a.salt_remote = child->salt_er;
2373 a.salt_local = child->salt_ei;
2375 a.dst_port = a.src_port = sa->ipsec_over_udp_port;
2379 ipsec_mk_key (&a.loc_ikey, child->sk_ar, vec_len (child->sk_ar));
2380 ipsec_mk_key (&a.rem_ikey, child->sk_ai, vec_len (child->sk_ai));
2381 ipsec_mk_key (&a.loc_ckey, child->sk_er, vec_len (child->sk_er));
2382 ipsec_mk_key (&a.rem_ckey, child->sk_ei, vec_len (child->sk_ei));
2385 a.salt_remote = child->salt_ei;
2386 a.salt_local = child->salt_er;
2389 ikev2_natt_active (sa) ? sa->dst_port : sa->ipsec_over_udp_port;
2390 a.src_port = sa->ipsec_over_udp_port;
2393 if (sa->is_initiator && sa->profile_index != ~0)
2394 p = pool_elt_at_index (km->profiles, sa->profile_index);
2396 if (p && p->lifetime)
2398 child->time_to_expiration = vlib_time_now (vm) + p->lifetime;
2399 if (p->lifetime_jitter)
2401 // This is not much better than rand(3), which Coverity warns
2402 // is unsuitable for security applications; random_u32 is
2403 // however fast. If this perturbance to the expiration time
2404 // needs to use a better RNG then we may need to use something
2405 // like /dev/urandom which has significant overhead.
2406 u32 rnd = (u32) (vlib_time_now (vm) * 1e6);
2407 rnd = random_u32 (&rnd);
2409 child->time_to_expiration += 1 + (rnd % p->lifetime_jitter);
2413 if (thread_index & 0xffffffc0)
2414 ikev2_elog_error ("error: thread index exceeds max range 0x3f!");
2416 if (child_index & 0xfffff000 || sa_index & 0xfffff000)
2417 ikev2_elog_error ("error: sa/child index exceeds max range 0xfff!");
2419 child->local_sa_id =
2421 ikev2_mk_local_sa_id (sa_index, child_index, thread_index);
2423 u32 remote_sa_id = ikev2_mk_remote_sa_id (sa_index, child_index,
2428 /* create a new remote SA ID to keep the old SA for a bit longer
2429 * so the peer has some time to swap their SAs */
2431 /* use most significat bit of child index part in id */
2433 if (sa->current_remote_id_mask)
2435 sa->old_remote_id = a.old_remote_sa_id = remote_sa_id | mask;
2436 sa->current_remote_id_mask = 0;
2440 sa->old_remote_id = a.old_remote_sa_id = remote_sa_id;
2441 sa->current_remote_id_mask = mask;
2442 remote_sa_id |= mask;
2444 sa->old_id_expiration = 3.0;
2445 sa->old_remote_id_present = 1;
2448 child->remote_sa_id = a.remote_sa_id = remote_sa_id;
2450 a.sw_if_index = (sa->is_tun_itf_set ? sa->tun_itf : ~0);
2451 a.ipsec_over_udp_port = sa->ipsec_over_udp_port;
2453 vl_api_rpc_call_main_thread (ikev2_add_tunnel_from_main,
2454 (u8 *) & a, sizeof (a));
2460 ip46_address_t local_ip;
2461 ip46_address_t remote_ip;
2465 } ikev2_del_ipsec_tunnel_args_t;
2468 ikev2_flip_alternate_sa_bit (u32 id)
2477 ikev2_del_tunnel_from_main (ikev2_del_ipsec_tunnel_args_t * a)
2479 ikev2_main_t *km = &ikev2_main;
2480 ipip_tunnel_t *ipip = NULL;
2483 if (~0 == a->sw_if_index)
2485 ipip_tunnel_key_t key = {
2487 .dst = a->remote_ip,
2488 .transport = IPIP_TRANSPORT_IP4,
2492 ipip = ipip_tunnel_db_find (&key);
2496 sw_if_index = ipip->sw_if_index;
2497 hash_unset (km->sw_if_indices, ipip->sw_if_index);
2504 sw_if_index = a->sw_if_index;
2505 vnet_sw_interface_admin_down (vnet_get_main (), sw_if_index);
2508 if (~0 != sw_if_index)
2509 ipsec_tun_protect_del (sw_if_index, NULL);
2511 ipsec_sa_unlock_id (a->remote_sa_id);
2512 ipsec_sa_unlock_id (a->local_sa_id);
2513 ipsec_sa_unlock_id (ikev2_flip_alternate_sa_bit (a->remote_sa_id));
2516 ipip_del_tunnel (ipip->sw_if_index);
2520 ikev2_delete_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa,
2521 ikev2_child_sa_t * child)
2523 ikev2_del_ipsec_tunnel_args_t a;
2525 clib_memset (&a, 0, sizeof (a));
2527 if (sa->is_initiator)
2529 ip_address_to_46 (&sa->iaddr, &a.local_ip);
2530 ip_address_to_46 (&sa->raddr, &a.remote_ip);
2534 ip_address_to_46 (&sa->raddr, &a.local_ip);
2535 ip_address_to_46 (&sa->iaddr, &a.remote_ip);
2538 a.remote_sa_id = child->remote_sa_id;
2539 a.local_sa_id = child->local_sa_id;
2540 a.sw_if_index = (sa->is_tun_itf_set ? sa->tun_itf : ~0);
2542 vl_api_rpc_call_main_thread (ikev2_del_tunnel_from_main, (u8 *) & a,
2548 ikev2_add_invalid_ke_payload (ikev2_sa_t *sa, ikev2_payload_chain_t *chain)
2550 u8 *data = vec_new (u8, 2);
2551 ikev2_sa_transform_t *tr_dh =
2552 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_DH);
2553 ASSERT (tr_dh && tr_dh->dh_type);
2554 data[0] = (tr_dh->dh_type >> 8) & 0xff;
2555 data[1] = (tr_dh->dh_type) & 0xff;
2556 ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD, data);
2561 ikev2_add_notify_payload (ikev2_sa_t *sa, ikev2_payload_chain_t *chain,
2564 if (notify_type == IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD)
2565 ikev2_add_invalid_ke_payload (sa, chain);
2567 ikev2_payload_add_notify (chain, notify_type, 0);
2571 ikev2_add_create_child_resp (ikev2_sa_t *sa, ikev2_rekey_t *rekey,
2572 ikev2_payload_chain_t *chain)
2574 if (rekey->notify_type)
2576 ikev2_add_notify_payload (sa, chain, rekey->notify_type);
2580 ikev2_payload_add_sa (chain, rekey->r_proposal, 0);
2581 ikev2_payload_add_nonce (chain, sa->r_nonce);
2583 ikev2_payload_add_ke (chain, sa->dh_group, sa->r_dh_data);
2584 ikev2_payload_add_ts (chain, rekey->tsi, IKEV2_PAYLOAD_TSI);
2585 ikev2_payload_add_ts (chain, rekey->tsr, IKEV2_PAYLOAD_TSR);
2589 ikev2_generate_message (vlib_buffer_t *b, ikev2_sa_t *sa, ike_header_t *ike,
2590 void *user, udp_header_t *udp, ikev2_stats_t *stats)
2592 ikev2_main_t *km = &ikev2_main;
2593 u16 buffer_data_size = vlib_buffer_get_default_data_size (km->vlib_main);
2595 ike_payload_header_t *ph;
2599 ikev2_sa_transform_t *tr_encr, *tr_integ;
2601 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR);
2603 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG);
2605 ikev2_payload_chain_t *chain = 0;
2606 ikev2_payload_new_chain (chain);
2608 if (ike->exchange == IKEV2_EXCHANGE_SA_INIT)
2610 if (sa->r_proposals == 0)
2612 ikev2_payload_add_notify (chain,
2613 IKEV2_NOTIFY_MSG_NO_PROPOSAL_CHOSEN, 0);
2614 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
2616 else if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE)
2618 ikev2_add_invalid_ke_payload (sa, chain);
2619 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
2621 else if (sa->state == IKEV2_STATE_NOTIFY_AND_DELETE)
2623 u8 *data = vec_new (u8, 1);
2625 data[0] = sa->unsupported_cp;
2626 ikev2_payload_add_notify (chain,
2627 IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD,
2635 ike->rspi = clib_host_to_net_u64 (sa->rspi);
2636 ikev2_payload_add_sa (chain, sa->r_proposals, 0);
2637 ikev2_payload_add_ke (chain, sa->dh_group, sa->r_dh_data);
2638 ikev2_payload_add_nonce (chain, sa->r_nonce);
2640 u8 *nat_detection_sha1 =
2641 ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa->ispi),
2642 clib_host_to_net_u64 (sa->rspi),
2643 &sa->raddr, udp->dst_port);
2644 ikev2_payload_add_notify (chain,
2645 IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP,
2646 nat_detection_sha1);
2647 vec_free (nat_detection_sha1);
2648 nat_detection_sha1 =
2649 ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa->ispi),
2650 clib_host_to_net_u64 (sa->rspi),
2651 &sa->iaddr, udp->src_port);
2652 ikev2_payload_add_notify (chain,
2653 IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP,
2654 nat_detection_sha1);
2655 vec_free (nat_detection_sha1);
2658 else if (ike->exchange == IKEV2_EXCHANGE_IKE_AUTH)
2660 if (sa->state == IKEV2_STATE_AUTHENTICATED)
2662 ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
2663 ikev2_payload_add_auth (chain, &sa->r_auth);
2664 ikev2_payload_add_sa (chain, sa->childs[0].r_proposals, 0);
2665 ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
2666 ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR);
2668 else if (sa->state == IKEV2_STATE_AUTH_FAILED)
2670 ikev2_payload_add_notify (chain,
2671 IKEV2_NOTIFY_MSG_AUTHENTICATION_FAILED,
2673 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
2675 else if (sa->state == IKEV2_STATE_TS_UNACCEPTABLE)
2677 ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_TS_UNACCEPTABLE,
2679 ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
2680 ikev2_payload_add_auth (chain, &sa->r_auth);
2682 else if (sa->state == IKEV2_STATE_NO_PROPOSAL_CHOSEN)
2684 ikev2_payload_add_notify (chain,
2685 IKEV2_NOTIFY_MSG_NO_PROPOSAL_CHOSEN, 0);
2686 ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
2687 ikev2_payload_add_auth (chain, &sa->r_auth);
2688 ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
2689 ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR);
2691 else if (sa->state == IKEV2_STATE_NOTIFY_AND_DELETE)
2693 u8 *data = vec_new (u8, 1);
2695 data[0] = sa->unsupported_cp;
2696 ikev2_payload_add_notify (chain,
2697 IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD,
2701 else if (sa->state == IKEV2_STATE_SA_INIT)
2703 ikev2_payload_add_id (chain, &sa->i_id, IKEV2_PAYLOAD_IDI);
2704 /* IDr is optional when sending INIT from the initiator */
2705 ASSERT (sa->r_id.type != 0 || sa->is_initiator);
2706 if (sa->r_id.type != 0)
2707 ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
2708 ikev2_payload_add_auth (chain, &sa->i_auth);
2709 ikev2_payload_add_sa (chain, sa->childs[0].i_proposals, 0);
2710 ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
2711 ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR);
2712 ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_INITIAL_CONTACT,
2717 ikev2_set_state (sa, IKEV2_STATE_DELETED, ": unexpected IKE_AUTH");
2721 else if (ike->exchange == IKEV2_EXCHANGE_INFORMATIONAL)
2723 /* if pending delete */
2726 if (sa->del[0].protocol_id == IKEV2_PROTOCOL_IKE)
2728 if (ike_hdr_is_request (ike))
2729 ikev2_payload_add_delete (chain, sa->del);
2731 /* The response to a request that deletes the IKE SA is an empty
2732 INFORMATIONAL response. */
2733 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
2735 /* The response to a request that deletes ESP or AH SAs will contain
2736 delete payloads for the paired SAs going in the other direction. */
2739 ikev2_payload_add_delete (chain, sa->del);
2744 /* received N(AUTHENTICATION_FAILED) */
2745 else if (sa->state == IKEV2_STATE_AUTH_FAILED)
2747 ikev2_set_state (sa, IKEV2_STATE_DELETED, ": auth failed");
2750 /* received unsupported critical payload */
2751 else if (sa->unsupported_cp)
2753 u8 *data = vec_new (u8, 1);
2755 data[0] = sa->unsupported_cp;
2756 ikev2_payload_add_notify (chain,
2757 IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD,
2760 sa->unsupported_cp = 0;
2763 /* else send empty response */
2765 if (ike_hdr_is_response (ike))
2767 ASSERT (stats != 0);
2768 stats->n_keepalives++;
2769 sa->stats.n_keepalives++;
2773 else if (ike->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA)
2775 if (sa->is_initiator)
2778 ikev2_sa_proposal_t *proposals = (ikev2_sa_proposal_t *) user;
2779 ikev2_notify_t notify;
2780 u8 *data = vec_new (u8, 4);
2781 clib_memset (¬ify, 0, sizeof (notify));
2782 notify.protocol_id = IKEV2_PROTOCOL_ESP;
2783 notify.spi = sa->childs[0].i_proposals->spi;
2784 *(u32 *) data = clib_host_to_net_u32 (notify.spi);
2786 ikev2_payload_add_sa (chain, proposals, 0);
2787 ikev2_payload_add_nonce (chain, sa->i_nonce);
2788 ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
2789 ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR);
2790 ikev2_payload_add_notify_2 (chain, IKEV2_NOTIFY_MSG_REKEY_SA, data,
2795 else if (vec_len (sa->rekey) > 0)
2797 ikev2_add_create_child_resp (sa, &sa->rekey[0], chain);
2798 vec_del1 (sa->rekey, 0);
2800 else if (vec_len (sa->new_child) > 0)
2802 ikev2_add_create_child_resp (sa, &sa->new_child[0], chain);
2803 vec_del1 (sa->new_child, 0);
2805 else if (vec_len (sa->sa_rekey) > 0)
2807 if (sa->sa_rekey[0].notify_type)
2808 ikev2_add_notify_payload (sa, chain, sa->sa_rekey[0].notify_type);
2811 ikev2_payload_add_sa (chain, sa->sa_rekey[0].r_proposals, 1);
2812 ikev2_payload_add_nonce (chain, sa->sa_rekey[0].r_nonce);
2813 ikev2_payload_add_ke (chain, sa->sa_rekey[0].dh_group,
2814 sa->sa_rekey[0].r_dh_data);
2816 vec_del1 (sa->sa_rekey, 0);
2818 else if (sa->unsupported_cp)
2820 u8 *data = vec_new (u8, 1);
2822 data[0] = sa->unsupported_cp;
2823 ikev2_payload_add_notify (
2824 chain, IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD, data);
2826 sa->unsupported_cp = 0;
2830 ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NO_ADDITIONAL_SAS,
2836 ike->version = IKE_VERSION_2;
2837 ike->nextpayload = IKEV2_PAYLOAD_SK;
2838 tlen = sizeof (*ike);
2840 if (sa->is_initiator)
2841 ike->flags |= IKEV2_HDR_FLAG_INITIATOR;
2843 if (ike->exchange == IKEV2_EXCHANGE_SA_INIT)
2845 tlen += vec_len (chain->data);
2846 ike->nextpayload = chain->first_payload_type;
2847 ike->length = clib_host_to_net_u32 (tlen);
2849 if (tlen + b->current_length + b->current_data > buffer_data_size)
2855 clib_memcpy_fast (ike->payload, chain->data, vec_len (chain->data));
2857 /* store whole IKE payload - needed for PSK auth */
2858 vec_reset_length (sa->last_sa_init_res_packet_data);
2859 vec_add (sa->last_sa_init_res_packet_data, ike, tlen);
2863 ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
2864 ikev2_payload_chain_add_padding (chain, tr_encr->block_size);
2867 plen = sizeof (*ph);
2868 ph = (ike_payload_header_t *) & ike->payload[0];
2869 ph->nextpayload = chain->first_payload_type;
2872 tr_encr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_GCM_16;
2873 int iv_len = is_aead ? IKEV2_GCM_IV_SIZE : tr_encr->block_size;
2874 plen += vec_len (chain->data) + iv_len;
2876 /* add space for hmac/tag */
2878 plen += tr_integ->key_trunc;
2880 plen += IKEV2_GCM_ICV_SIZE;
2883 if (tlen + b->current_length + b->current_data > buffer_data_size)
2889 /* payload and total length */
2890 ph->length = clib_host_to_net_u16 (plen);
2891 ike->length = clib_host_to_net_u32 (tlen);
2895 if (!ikev2_encrypt_aead_data (ptd, sa, tr_encr, chain->data,
2896 ph->payload, (u8 *) ike,
2897 sizeof (*ike) + sizeof (*ph),
2898 ph->payload + plen - sizeof (*ph) -
2899 IKEV2_GCM_ICV_SIZE))
2907 if (!ikev2_encrypt_data
2908 (ptd, sa, tr_encr, chain->data, ph->payload))
2914 ikev2_calc_integr (tr_integ,
2915 sa->is_initiator ? sa->sk_ai : sa->sk_ar,
2916 (u8 *) ike, tlen - tr_integ->key_trunc);
2917 clib_memcpy_fast (ike->payload + tlen - tr_integ->key_trunc -
2918 sizeof (*ike), integ, tr_integ->key_trunc);
2921 /* store whole IKE payload - needed for retransmit */
2922 vec_reset_length (sa->last_res_packet_data);
2923 vec_add (sa->last_res_packet_data, ike, tlen);
2927 ikev2_payload_destroy_chain (chain);
2933 ikev2_retransmit_sa_init_one (ikev2_sa_t * sa, ike_header_t * ike,
2934 ip_address_t iaddr, ip_address_t raddr,
2939 u8 payload = ike->nextpayload;
2941 if (sa->ispi != clib_net_to_host_u64 (ike->ispi) ||
2942 ip_address_cmp (&sa->iaddr, &iaddr) ||
2943 ip_address_cmp (&sa->raddr, &raddr))
2948 while (p < rlen && payload != IKEV2_PAYLOAD_NONE)
2950 ike_payload_header_t *ikep = (ike_payload_header_t *) & ike->payload[p];
2951 u32 plen = clib_net_to_host_u16 (ikep->length);
2953 if (plen < sizeof (ike_payload_header_t))
2956 if (payload == IKEV2_PAYLOAD_NONCE &&
2957 !clib_memcmp (sa->i_nonce, ikep->payload, plen - sizeof (*ikep)))
2959 /* req is retransmit */
2960 if (sa->state == IKEV2_STATE_SA_INIT)
2962 sa->stats.n_init_retransmit++;
2963 tmp = (ike_header_t *) sa->last_sa_init_res_packet_data;
2964 u32 slen = clib_net_to_host_u32 (tmp->length);
2965 ike->ispi = tmp->ispi;
2966 ike->rspi = tmp->rspi;
2967 ike->nextpayload = tmp->nextpayload;
2968 ike->version = tmp->version;
2969 ike->exchange = tmp->exchange;
2970 ike->flags = tmp->flags;
2971 ike->msgid = tmp->msgid;
2972 ike->length = tmp->length;
2973 clib_memcpy_fast (ike->payload, tmp->payload,
2974 slen - sizeof (*ike));
2975 ikev2_elog_uint_peers (IKEV2_LOG_DEBUG,
2976 "ispi %lx IKE_SA_INIT retransmit "
2977 "from %d.%d.%d.%d to %d.%d.%d.%d",
2979 ip_addr_v4 (&raddr).as_u32,
2980 ip_addr_v4 (&iaddr).as_u32);
2983 /* else ignore req */
2986 ikev2_elog_uint_peers (IKEV2_LOG_DEBUG,
2987 "ispi %lx IKE_SA_INIT ignore "
2988 "from %d.%d.%d.%d to %d.%d.%d.%d",
2990 ip_addr_v4 (&raddr).as_u32,
2991 ip_addr_v4 (&iaddr).as_u32);
2995 payload = ikep->nextpayload;
3003 ikev2_retransmit_sa_init (ike_header_t * ike, ip_address_t iaddr,
3004 ip_address_t raddr, u32 rlen)
3008 ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
3010 pool_foreach (sa, ptd->sas) {
3011 res = ikev2_retransmit_sa_init_one (sa, ike, iaddr, raddr, rlen);
3016 /* req is not retransmit */
3021 ikev2_retransmit_resp (ikev2_sa_t * sa, ike_header_t * ike)
3023 if (ike_hdr_is_response (ike))
3026 u32 msg_id = clib_net_to_host_u32 (ike->msgid);
3029 if (msg_id > sa->last_msg_id || sa->last_msg_id == ~0)
3031 sa->last_msg_id = msg_id;
3035 /* retransmitted req */
3036 if (msg_id == sa->last_msg_id)
3038 sa->stats.n_retransmit++;
3039 ike_header_t *tmp = (ike_header_t *) sa->last_res_packet_data;
3040 u32 slen = clib_net_to_host_u32 (tmp->length);
3041 ike->ispi = tmp->ispi;
3042 ike->rspi = tmp->rspi;
3043 ike->nextpayload = tmp->nextpayload;
3044 ike->version = tmp->version;
3045 ike->exchange = tmp->exchange;
3046 ike->flags = tmp->flags;
3047 ike->msgid = tmp->msgid;
3048 ike->length = tmp->length;
3049 clib_memcpy_fast (ike->payload, tmp->payload, slen - sizeof (*ike));
3050 ikev2_elog_uint_peers (IKEV2_LOG_DEBUG, "IKE retransmit msgid %d",
3051 msg_id, ip_addr_v4 (&sa->raddr).as_u32,
3052 ip_addr_v4 (&sa->iaddr).as_u32);
3056 /* old req ignore */
3057 ikev2_elog_uint_peers (IKEV2_LOG_DEBUG, "IKE req ignore msgid %d",
3058 msg_id, ip_addr_v4 (&sa->raddr).as_u32,
3059 ip_addr_v4 (&sa->iaddr).as_u32);
3064 ikev2_init_sa (vlib_main_t * vm, ikev2_sa_t * sa)
3066 ikev2_main_t *km = &ikev2_main;
3067 sa->liveness_period_check = vlib_time_now (vm) + km->liveness_period;
3068 sa->profile_index = ~0;
3072 ikev2_del_sa_init_from_main (u64 * ispi)
3074 ikev2_main_t *km = &ikev2_main;
3075 uword *p = hash_get (km->sa_by_ispi, *ispi);
3078 ikev2_sa_t *sai = pool_elt_at_index (km->sais, p[0]);
3079 hash_unset (km->sa_by_ispi, sai->ispi);
3080 ikev2_sa_free_all_vec (sai);
3081 pool_put (km->sais, sai);
3086 ikev2_del_sa_init (u64 ispi)
3088 vl_api_rpc_call_main_thread (ikev2_del_sa_init_from_main, (u8 *) & ispi,
3093 ikev2_rewrite_v6_addrs (ikev2_sa_t *sa, ip6_header_t *ih)
3095 if (sa->is_initiator)
3097 ip_address_copy_addr (&ih->dst_address, &sa->raddr);
3098 ip_address_copy_addr (&ih->src_address, &sa->iaddr);
3102 ip_address_copy_addr (&ih->dst_address, &sa->iaddr);
3103 ip_address_copy_addr (&ih->src_address, &sa->raddr);
3108 ikev2_rewrite_v4_addrs (ikev2_sa_t *sa, ip4_header_t *ih)
3110 if (sa->is_initiator)
3112 ip_address_copy_addr (&ih->dst_address, &sa->raddr);
3113 ip_address_copy_addr (&ih->src_address, &sa->iaddr);
3117 ip_address_copy_addr (&ih->dst_address, &sa->iaddr);
3118 ip_address_copy_addr (&ih->src_address, &sa->raddr);
3123 ikev2_set_ip_address (ikev2_sa_t *sa, const void *iaddr, const void *raddr,
3124 const ip_address_family_t af)
3126 ip_address_set (&sa->raddr, raddr, af);
3127 ip_address_set (&sa->iaddr, iaddr, af);
3131 ikev2_elog_uint_peers_addr (u32 exchange, ip4_header_t * ip4,
3132 ip6_header_t * ip6, u8 is_ip4)
3137 src = ip4->src_address.as_u32;
3138 dst = ip4->dst_address.as_u32;
3142 src = ip6->src_address.as_u32[3];
3143 dst = ip6->dst_address.as_u32[3];
3145 ikev2_elog_uint_peers (IKEV2_LOG_WARNING, "IKEv2 exchange %d "
3146 "received from %d.%d.%d.%d to %d.%d.%d.%d",
3147 exchange, src, dst);
3151 ikev2_generate_sa_init_data_and_log (ikev2_sa_t * sa)
3153 ikev2_generate_sa_error_t rc = ikev2_generate_sa_init_data (sa);
3155 if (PREDICT_TRUE (rc == IKEV2_GENERATE_SA_INIT_OK))
3158 if (rc == IKEV2_GENERATE_SA_INIT_ERR_NO_DH)
3159 ikev2_elog_error (IKEV2_GENERATE_SA_INIT_OK_ERR_NO_DH_STR);
3160 else if (rc == IKEV2_GENERATE_SA_INIT_ERR_UNSUPPORTED_DH)
3161 ikev2_elog_error (IKEV2_GENERATE_SA_INIT_OK_ERR_UNSUPP_STR);
3165 ikev2_update_stats (vlib_main_t *vm, u32 node_index, ikev2_stats_t *s)
3167 vlib_node_increment_counter (vm, node_index, IKEV2_ERROR_KEEPALIVE,
3169 vlib_node_increment_counter (vm, node_index, IKEV2_ERROR_REKEY_REQ,
3171 vlib_node_increment_counter (vm, node_index, IKEV2_ERROR_INIT_SA_REQ,
3173 vlib_node_increment_counter (vm, node_index, IKEV2_ERROR_IKE_AUTH_REQ,
3178 ikev2_node_internal (vlib_main_t *vm, vlib_node_runtime_t *node,
3179 vlib_frame_t *frame, u8 is_ip4, u8 natt)
3181 u32 n_left = frame->n_vectors, *from;
3182 ikev2_main_t *km = &ikev2_main;
3183 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
3184 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
3185 ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
3186 ikev2_stats_t _stats, *stats = &_stats;
3189 /* no NAT traversal for ip6 */
3190 ASSERT (!natt || is_ip4);
3192 clib_memset_u16 (stats, 0, sizeof (stats[0]) / sizeof (u16));
3193 from = vlib_frame_vector_args (frame);
3194 vlib_get_buffers (vm, from, bufs, n_left);
3199 vlib_buffer_t *b0 = b[0];
3200 next[0] = is_ip4 ? IKEV2_NEXT_IP4_ERROR_DROP
3201 : IKEV2_NEXT_IP6_ERROR_DROP;
3202 ip4_header_t *ip40 = 0;
3203 ip6_header_t *ip60 = 0;
3206 ikev2_sa_t *sa0 = 0;
3207 ikev2_sa_t sa; /* temporary store for SA */
3214 u8 *ptr = vlib_buffer_get_current (b0);
3215 ip40 = (ip4_header_t *) ptr;
3216 ptr += sizeof (*ip40);
3217 udp0 = (udp_header_t *) ptr;
3218 ptr += sizeof (*udp0);
3219 ike0 = (ike_header_t *) ptr;
3220 ip_hdr_sz = sizeof (*ip40);
3224 u8 *ipx_hdr = b0->data + vnet_buffer (b0)->l3_hdr_offset;
3225 ike0 = vlib_buffer_get_current (b0);
3226 vlib_buffer_advance (b0, -sizeof (*udp0));
3227 udp0 = vlib_buffer_get_current (b0);
3231 ip40 = (ip4_header_t *) ipx_hdr;
3232 ip_hdr_sz = sizeof (*ip40);
3236 ip60 = (ip6_header_t *) ipx_hdr;
3237 ip_hdr_sz = sizeof (*ip60);
3239 vlib_buffer_advance (b0, -ip_hdr_sz);
3242 rlen = b0->current_length - ip_hdr_sz - sizeof (*udp0);
3244 /* check for non-esp marker */
3247 ASSERT (*((u32 *) ike0) == 0);
3249 (ike_header_t *) ((u8 *) ike0 + sizeof (ikev2_non_esp_marker));
3250 rlen -= sizeof (ikev2_non_esp_marker);
3253 if (clib_net_to_host_u32 (ike0->length) != rlen)
3255 vlib_node_increment_counter (vm, node->node_index,
3256 IKEV2_ERROR_BAD_LENGTH, 1);
3260 if (ike0->version != IKE_VERSION_2)
3262 vlib_node_increment_counter (vm, node->node_index,
3263 IKEV2_ERROR_NOT_IKEV2, 1);
3267 if (ike0->exchange == IKEV2_EXCHANGE_SA_INIT)
3270 clib_memset (sa0, 0, sizeof (*sa0));
3272 if (ike_hdr_is_initiator (ike0))
3274 sa0->stats.n_sa_init_req++;
3275 stats->n_sa_init_req++;
3276 if (ike0->rspi == 0)
3279 ikev2_set_ip_address (sa0, &ip40->src_address,
3280 &ip40->dst_address, AF_IP4);
3282 ikev2_set_ip_address (sa0, &ip60->src_address,
3283 &ip60->dst_address, AF_IP6);
3285 sa0->dst_port = clib_net_to_host_u16 (udp0->src_port);
3288 ikev2_retransmit_sa_init (ike0, sa0->iaddr,
3292 vlib_node_increment_counter (vm, node->node_index,
3295 IKEV2_ERROR_IKE_SA_INIT_IGNORE
3297 IKEV2_ERROR_IKE_SA_INIT_RETRANSMIT,
3302 res = ikev2_process_sa_init_req (
3303 vm, sa0, ike0, udp0, rlen,
3304 vnet_buffer (b0)->sw_if_index[VLIB_RX]);
3306 vlib_node_increment_counter (vm, node->node_index,
3307 IKEV2_ERROR_MALFORMED_PACKET,
3310 if (sa0->state == IKEV2_STATE_SA_INIT)
3312 ikev2_sa_free_proposal_vector (&sa0->r_proposals);
3314 ikev2_select_proposal (sa0->i_proposals,
3315 IKEV2_PROTOCOL_IKE);
3316 ikev2_generate_sa_init_data_and_log (sa0);
3319 if (sa0->state == IKEV2_STATE_SA_INIT
3320 || sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE)
3322 ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
3324 ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
3326 vlib_node_increment_counter (vm, node->node_index,
3327 IKEV2_ERROR_NO_BUFF_SPACE,
3331 if (sa0->state == IKEV2_STATE_SA_INIT)
3333 /* add SA to the pool */
3334 pool_get (ptd->sas, sa0);
3335 clib_memcpy_fast (sa0, &sa, sizeof (*sa0));
3336 ikev2_init_sa (vm, sa0);
3337 hash_set (ptd->sa_by_rspi, sa0->rspi, sa0 - ptd->sas);
3341 ikev2_sa_free_all_vec (sa0);
3345 else //received sa_init without initiator flag
3348 ikev2_set_ip_address (sa0, &ip40->dst_address,
3349 &ip40->src_address, AF_IP4);
3351 ikev2_set_ip_address (sa0, &ip60->dst_address,
3352 &ip60->src_address, AF_IP6);
3354 ikev2_process_sa_init_resp (vm, sa0, ike0, udp0, rlen);
3356 if (sa0->state == IKEV2_STATE_SA_INIT)
3359 ike0->exchange = IKEV2_EXCHANGE_IKE_AUTH;
3360 uword *p = hash_get (km->sa_by_ispi, sa0->ispi);
3363 ikev2_sa_t *sai = pool_elt_at_index (km->sais, p[0]);
3365 if (clib_atomic_bool_cmp_and_swap
3366 (&sai->init_response_received, 0, 1))
3368 ikev2_complete_sa_data (sa0, sai);
3369 ikev2_calc_keys (sa0);
3370 ikev2_sa_auth_init (sa0);
3371 ike0->flags = IKEV2_HDR_FLAG_INITIATOR;
3373 clib_net_to_host_u32 (sai->last_init_msg_id);
3374 sa0->last_init_msg_id = sai->last_init_msg_id + 1;
3375 slen = ikev2_generate_message (b0, sa0, ike0, 0,
3378 vlib_node_increment_counter (vm,
3380 IKEV2_ERROR_NO_BUFF_SPACE,
3385 /* we've already processed sa-init response */
3386 sa0->state = IKEV2_STATE_UNKNOWN;
3391 if (sa0->state == IKEV2_STATE_SA_INIT)
3393 /* add SA to the pool */
3394 pool_get (ptd->sas, sa0);
3395 clib_memcpy_fast (sa0, &sa, sizeof (*sa0));
3396 hash_set (ptd->sa_by_rspi, sa0->rspi, sa0 - ptd->sas);
3400 ikev2_sa_free_all_vec (sa0);
3404 else if (ike0->exchange == IKEV2_EXCHANGE_IKE_AUTH)
3407 p = hash_get (ptd->sa_by_rspi, clib_net_to_host_u64 (ike0->rspi));
3410 sa0 = pool_elt_at_index (ptd->sas, p[0]);
3411 slen = ikev2_retransmit_resp (sa0, ike0);
3414 vlib_node_increment_counter (vm, node->node_index,
3417 IKEV2_ERROR_IKE_REQ_IGNORE
3419 IKEV2_ERROR_IKE_REQ_RETRANSMIT,
3424 sa0->dst_port = clib_net_to_host_u16 (udp0->src_port);
3425 res = ikev2_process_auth_req (vm, sa0, ike0, rlen);
3427 ikev2_sa_auth (sa0);
3429 vlib_node_increment_counter (vm, node->node_index,
3430 IKEV2_ERROR_MALFORMED_PACKET, 1);
3431 if (sa0->state == IKEV2_STATE_AUTHENTICATED)
3433 ikev2_initial_contact_cleanup (ptd, sa0);
3434 p = hash_get (ptd->sa_by_rspi,
3435 clib_net_to_host_u64 (ike0->rspi));
3436 ikev2_sa_match_ts (sa0);
3437 if (sa0->state != IKEV2_STATE_TS_UNACCEPTABLE)
3438 ikev2_create_tunnel_interface (vm, sa0, &sa0->childs[0],
3442 if (sa0->is_initiator)
3444 sa0->last_msg_id = ~0;
3445 ikev2_del_sa_init (sa0->ispi);
3449 sa0->stats.n_sa_auth_req++;
3450 stats->n_sa_auth_req++;
3451 ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
3453 ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
3455 vlib_node_increment_counter (vm, node->node_index,
3456 IKEV2_ERROR_NO_BUFF_SPACE,
3461 else if (ike0->exchange == IKEV2_EXCHANGE_INFORMATIONAL)
3464 p = hash_get (ptd->sa_by_rspi, clib_net_to_host_u64 (ike0->rspi));
3467 sa0 = pool_elt_at_index (ptd->sas, p[0]);
3468 slen = ikev2_retransmit_resp (sa0, ike0);
3471 vlib_node_increment_counter (vm, node->node_index,
3474 IKEV2_ERROR_IKE_REQ_IGNORE
3476 IKEV2_ERROR_IKE_REQ_RETRANSMIT,
3481 res = ikev2_process_informational_req (vm, sa0, ike0, rlen);
3484 vlib_node_increment_counter (vm, node->node_index,
3485 IKEV2_ERROR_MALFORMED_PACKET,
3493 if (sa0->del[0].protocol_id != IKEV2_PROTOCOL_IKE)
3495 ikev2_delete_t *d, *tmp, *resp = 0;
3496 vec_foreach (d, sa0->del)
3498 ikev2_child_sa_t *ch_sa;
3499 ch_sa = ikev2_sa_get_child (sa0, d->spi,
3501 !sa0->is_initiator);
3504 ikev2_delete_tunnel_interface (km->vnet_main,
3506 if (!sa0->is_initiator)
3508 vec_add2 (resp, tmp, 1);
3509 tmp->protocol_id = d->protocol_id;
3510 tmp->spi = ch_sa->r_proposals[0].spi;
3512 ikev2_sa_del_child_sa (sa0, ch_sa);
3515 if (!sa0->is_initiator)
3517 vec_free (sa0->del);
3522 if (ike_hdr_is_request (ike0))
3524 ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
3526 ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
3528 vlib_node_increment_counter (vm, node->node_index,
3529 IKEV2_ERROR_NO_BUFF_SPACE,
3534 else if (ike0->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA)
3537 p = hash_get (ptd->sa_by_rspi, clib_net_to_host_u64 (ike0->rspi));
3540 sa0 = pool_elt_at_index (ptd->sas, p[0]);
3541 slen = ikev2_retransmit_resp (sa0, ike0);
3544 vlib_node_increment_counter (vm, node->node_index,
3547 IKEV2_ERROR_IKE_REQ_IGNORE
3549 IKEV2_ERROR_IKE_REQ_RETRANSMIT,
3554 res = ikev2_process_create_child_sa_req (vm, sa0, ike0, rlen);
3557 vlib_node_increment_counter (vm, node->node_index,
3558 IKEV2_ERROR_MALFORMED_PACKET,
3564 if (vec_len (sa0->rekey) > 0)
3566 if (!sa0->rekey[0].notify_type &&
3567 sa0->rekey[0].protocol_id != IKEV2_PROTOCOL_IKE)
3569 if (vec_len (sa0->childs) > 0)
3570 ikev2_sa_free_all_child_sa (&sa0->childs);
3571 ikev2_child_sa_t *child;
3572 vec_add2 (sa0->childs, child, 1);
3573 clib_memset (child, 0, sizeof (*child));
3574 child->r_proposals = sa0->rekey[0].r_proposal;
3575 child->i_proposals = sa0->rekey[0].i_proposal;
3576 child->tsi = sa0->rekey[0].tsi;
3577 child->tsr = sa0->rekey[0].tsr;
3578 ikev2_create_tunnel_interface (vm, sa0, child, p[0],
3579 child - sa0->childs, 1,
3582 if (ike_hdr_is_response (ike0))
3584 vec_free (sa0->rekey);
3588 stats->n_rekey_req++;
3589 sa0->stats.n_rekey_req++;
3590 ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
3592 ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
3594 vlib_node_increment_counter (vm, node->node_index,
3595 IKEV2_ERROR_NO_BUFF_SPACE,
3599 else if (vec_len (sa0->new_child) > 0)
3601 ikev2_child_sa_t *c;
3602 vec_add2 (sa0->childs, c, 1);
3603 memset (c, 0, sizeof (*c));
3604 c->r_proposals = sa0->new_child[0].r_proposal;
3605 c->i_proposals = sa0->new_child[0].i_proposal;
3606 c->tsi = sa0->new_child[0].tsi;
3607 c->tsr = sa0->new_child[0].tsr;
3608 ikev2_create_tunnel_interface (vm, sa0, c, p[0],
3610 sa0->new_child[0].kex);
3611 if (ike_hdr_is_request (ike0))
3613 ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
3615 ikev2_generate_message (b0, sa0, ike0, 0, udp0, 0);
3617 vlib_node_increment_counter (
3618 vm, node->node_index, IKEV2_ERROR_NO_BUFF_SPACE, 1);
3621 else if (vec_len (sa0->sa_rekey) > 0)
3623 if (!sa0->sa_rekey[0].notify_type)
3625 ikev2_sa_t *sar, *tmp = 0;
3626 pool_get (ptd->sas, tmp);
3627 sa0 = pool_elt_at_index (ptd->sas, p[0]);
3628 /* swap old/new SAs to keep index and inherit IPsec SA */
3629 clib_memcpy_fast (tmp, sa0, sizeof (*tmp));
3632 hash_set (ptd->sa_by_rspi, sa0->rspi, sa0 - ptd->sas);
3633 p = hash_get (ptd->sa_by_rspi, sa0->rspi);
3634 ikev2_complete_sa_rekey (sar, sa0, &sa0->sa_rekey[0]);
3635 hash_set (ptd->sa_by_rspi, sar->rspi, sar - ptd->sas);
3637 if (ike_hdr_is_response (ike0))
3639 vec_free (sa0->sa_rekey);
3643 stats->n_rekey_req++;
3644 sa0->stats.n_rekey_req++;
3645 ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
3647 ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
3649 vlib_node_increment_counter (
3650 vm, node->node_index, IKEV2_ERROR_NO_BUFF_SPACE, 1);
3657 ikev2_elog_uint_peers_addr (ike0->exchange, ip40, ip60, is_ip4);
3661 /* if we are sending packet back, rewrite headers */
3662 if (slen && ~0 != slen)
3666 next[0] = IKEV2_NEXT_IP4_LOOKUP;
3667 ikev2_rewrite_v4_addrs (sa0, ip40);
3671 next[0] = IKEV2_NEXT_IP6_LOOKUP;
3672 ikev2_rewrite_v6_addrs (sa0, ip60);
3677 udp0->dst_port = udp0->src_port =
3678 clib_net_to_host_u16 (ikev2_get_port (sa0));
3680 if (udp0->dst_port == clib_net_to_host_u16 (IKEV2_PORT_NATT)
3681 && ikev2_natt_active (sa0))
3684 slen = ikev2_insert_non_esp_marker (ike0, slen);
3690 slen += sizeof (ikev2_non_esp_marker);
3692 u16 tp = udp0->dst_port;
3693 udp0->dst_port = udp0->src_port;
3694 udp0->src_port = tp;
3697 udp0->length = clib_host_to_net_u16 (slen + sizeof (udp_header_t));
3699 b0->current_length = slen + ip_hdr_sz + sizeof (udp_header_t);
3702 ip40->length = clib_host_to_net_u16 (b0->current_length);
3703 ip40->checksum = ip4_header_checksum (ip40);
3707 ip60->payload_length =
3708 clib_host_to_net_u16 (b0->current_length - sizeof (*ip60));
3712 if (sa0 && (sa0->state == IKEV2_STATE_DELETED ||
3713 sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE))
3715 ikev2_child_sa_t *c;
3717 vec_foreach (c, sa0->childs)
3718 ikev2_delete_tunnel_interface (km->vnet_main, sa0, c);
3720 ikev2_delete_sa (ptd, sa0);
3722 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
3723 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
3726 ikev2_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
3727 t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3728 t->next_index = next[0];
3735 ikev2_update_stats (vm, node->node_index, stats);
3736 vlib_node_increment_counter (vm, node->node_index,
3737 IKEV2_ERROR_PROCESSED, frame->n_vectors);
3738 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
3739 return frame->n_vectors;
3743 ikev2_ip4 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
3745 return ikev2_node_internal (vm, node, frame, 1 /* is_ip4 */, 0);
3749 ikev2_ip4_natt (vlib_main_t *vm, vlib_node_runtime_t *node,
3750 vlib_frame_t *frame)
3752 return ikev2_node_internal (vm, node, frame, 1 /* is_ip4 */, 1 /* natt */);
3756 ikev2_ip6 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
3758 return ikev2_node_internal (vm, node, frame, 0 /* is_ip4 */, 0);
3761 VLIB_REGISTER_NODE (ikev2_node_ip4,static) = {
3762 .function = ikev2_ip4,
3763 .name = "ikev2-ip4",
3764 .vector_size = sizeof (u32),
3765 .format_trace = format_ikev2_trace,
3766 .type = VLIB_NODE_TYPE_INTERNAL,
3768 .n_errors = IKEV2_N_ERROR,
3769 .error_counters = ikev2_error_counters,
3771 .n_next_nodes = IKEV2_IP4_N_NEXT,
3773 [IKEV2_NEXT_IP4_LOOKUP] = "ip4-lookup",
3774 [IKEV2_NEXT_IP4_ERROR_DROP] = "error-drop",
3778 VLIB_REGISTER_NODE (ikev2_node_ip4_natt,static) = {
3779 .function = ikev2_ip4_natt,
3780 .name = "ikev2-ip4-natt",
3781 .vector_size = sizeof (u32),
3782 .format_trace = format_ikev2_trace,
3783 .type = VLIB_NODE_TYPE_INTERNAL,
3785 .n_errors = IKEV2_N_ERROR,
3786 .error_counters = ikev2_error_counters,
3788 .n_next_nodes = IKEV2_IP4_N_NEXT,
3790 [IKEV2_NEXT_IP4_LOOKUP] = "ip4-lookup",
3791 [IKEV2_NEXT_IP4_ERROR_DROP] = "error-drop",
3795 VLIB_REGISTER_NODE (ikev2_node_ip6,static) = {
3796 .function = ikev2_ip6,
3797 .name = "ikev2-ip6",
3798 .vector_size = sizeof (u32),
3799 .format_trace = format_ikev2_trace,
3800 .type = VLIB_NODE_TYPE_INTERNAL,
3802 .n_errors = IKEV2_N_ERROR,
3803 .error_counters = ikev2_error_counters,
3805 .n_next_nodes = IKEV2_IP6_N_NEXT,
3807 [IKEV2_NEXT_IP6_LOOKUP] = "ip6-lookup",
3808 [IKEV2_NEXT_IP6_ERROR_DROP] = "error-drop",
3812 // set ikev2 proposals when vpp is used as initiator
3813 static clib_error_t *
3814 ikev2_set_initiator_proposals (vlib_main_t * vm, ikev2_sa_t * sa,
3815 ikev2_transforms_set * ts,
3816 ikev2_sa_proposal_t ** proposals, int is_ike)
3819 ikev2_main_t *km = &ikev2_main;
3820 ikev2_sa_proposal_t *proposal;
3821 vec_add2 (*proposals, proposal, 1);
3822 ikev2_sa_transform_t *td;
3827 vec_foreach (td, km->supported_transforms)
3829 if (td->type == IKEV2_TRANSFORM_TYPE_ENCR
3830 && td->encr_type == ts->crypto_alg
3831 && td->key_len == ts->crypto_key_size / 8)
3834 attr[0] = clib_host_to_net_u16 (14 | (1 << 15));
3835 attr[1] = clib_host_to_net_u16 (td->key_len << 3);
3836 vec_add (td->attrs, (u8 *) attr, 4);
3837 vec_add1 (proposal->transforms, *td);
3846 r = clib_error_return (0, "Unsupported algorithm");
3850 if (IKEV2_TRANSFORM_INTEG_TYPE_NONE != ts->integ_alg)
3854 vec_foreach (td, km->supported_transforms)
3856 if (td->type == IKEV2_TRANSFORM_TYPE_INTEG
3857 && td->integ_type == ts->integ_alg)
3859 vec_add1 (proposal->transforms, *td);
3867 ("Didn't find any supported algorithm for IKEV2_TRANSFORM_TYPE_INTEG");
3868 r = clib_error_return (0, "Unsupported algorithm");
3877 vec_foreach (td, km->supported_transforms)
3879 if (td->type == IKEV2_TRANSFORM_TYPE_PRF
3880 && td->prf_type == IKEV2_TRANSFORM_PRF_TYPE_PRF_HMAC_SHA2_256)
3882 vec_add1 (proposal->transforms, *td);
3889 r = clib_error_return (0, "Unsupported algorithm");
3898 vec_foreach (td, km->supported_transforms)
3900 if (td->type == IKEV2_TRANSFORM_TYPE_DH && td->dh_type == ts->dh_type)
3902 vec_add1 (proposal->transforms, *td);
3905 sa->dh_group = td->dh_type;
3913 r = clib_error_return (0, "Unsupported algorithm");
3921 vec_foreach (td, km->supported_transforms)
3923 if (td->type == IKEV2_TRANSFORM_TYPE_ESN)
3925 vec_add1 (proposal->transforms, *td);
3931 r = clib_error_return (0, "Unsupported algorithm");
3940 static ikev2_profile_t *
3941 ikev2_profile_index_by_name (u8 * name)
3943 ikev2_main_t *km = &ikev2_main;
3946 p = mhash_get (&km->profile_index_by_name, name);
3950 return pool_elt_at_index (km->profiles, p[0]);
3955 ikev2_send_ike (vlib_main_t * vm, ip_address_t * src, ip_address_t * dst,
3956 u32 bi0, u32 len, u16 src_port, u16 dst_port, u32 sw_if_index)
3965 b0 = vlib_get_buffer (vm, bi0);
3966 vlib_buffer_advance (b0, -sizeof (udp_header_t));
3967 udp0 = vlib_buffer_get_current (b0);
3968 udp0->dst_port = clib_host_to_net_u16 (dst_port);
3969 udp0->src_port = clib_host_to_net_u16 (src_port);
3970 udp0->length = clib_host_to_net_u16 (len + sizeof (udp_header_t));
3973 if (ip_addr_version (dst) == AF_IP4)
3975 vlib_buffer_advance (b0, -sizeof (ip4_header_t));
3976 ip40 = vlib_buffer_get_current (b0);
3977 ip40->ip_version_and_header_length = 0x45;
3979 ip40->fragment_id = 0;
3980 ip40->flags_and_fragment_offset = 0;
3982 ip40->protocol = IP_PROTOCOL_UDP;
3983 ip40->dst_address.as_u32 = ip_addr_v4 (dst).as_u32;
3984 ip40->src_address.as_u32 = ip_addr_v4 (src).as_u32;
3985 b0->current_length =
3986 len + sizeof (ip4_header_t) + sizeof (udp_header_t);
3987 ip40->length = clib_host_to_net_u16 (b0->current_length);
3988 ip40->checksum = ip4_header_checksum (ip40);
3992 vlib_buffer_advance (b0, -sizeof (ip6_header_t));
3993 ip60 = vlib_buffer_get_current (b0);
3995 b0->current_length = len + sizeof (*ip60) + sizeof (udp_header_t);
3996 ip60->ip_version_traffic_class_and_flow_label =
3997 clib_host_to_net_u32 (0x6 << 28);
3998 ip60->payload_length =
3999 clib_host_to_net_u16 (b0->current_length - sizeof (*ip60));
4000 ip60->protocol = IP_PROTOCOL_UDP;
4001 ip60->hop_limit = 0xff;
4002 clib_memcpy_fast (ip60->src_address.as_u8, ip_addr_v6 (src).as_u8,
4003 sizeof (ip60->src_address));
4004 clib_memcpy_fast (ip60->dst_address.as_u8, ip_addr_v6 (dst).as_u8,
4005 sizeof (ip60->src_address));
4008 b0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
4009 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index;
4010 vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0;
4012 u32 next_index = (ip_addr_version (dst) == AF_IP4) ?
4013 ip4_lookup_node.index : ip6_lookup_node.index;
4015 /* send the request */
4016 f = vlib_get_frame_to_node (vm, next_index);
4017 to_next = vlib_frame_vector_args (f);
4020 vlib_put_frame_to_node (vm, next_index, f);
4025 ikev2_get_new_ike_header_buff (vlib_main_t * vm, vlib_buffer_t ** b)
4028 if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
4033 *b = vlib_get_buffer (vm, bi0);
4038 ikev2_set_local_key (vlib_main_t * vm, u8 * file)
4040 ikev2_main_t *km = &ikev2_main;
4043 EVP_PKEY_free (km->pkey);
4044 km->pkey = ikev2_load_key_file (file);
4045 if (km->pkey == NULL)
4046 return clib_error_return (0, "load key '%s' failed", file);
4051 static vnet_api_error_t
4052 ikev2_register_udp_port (ikev2_profile_t *p, u16 port)
4054 ipsec_register_udp_port (port, 0 /* is_ip4 */);
4055 ipsec_register_udp_port (port, 1 /* is_ip4 */);
4056 p->ipsec_over_udp_port = port;
4061 ikev2_unregister_udp_port (ikev2_profile_t *p)
4063 if (p->ipsec_over_udp_port == IPSEC_UDP_PORT_NONE)
4066 ipsec_unregister_udp_port (p->ipsec_over_udp_port, 0 /* is_ip4 */);
4067 ipsec_unregister_udp_port (p->ipsec_over_udp_port, 1 /* is_ip4 */);
4068 p->ipsec_over_udp_port = IPSEC_UDP_PORT_NONE;
4072 ikev2_initiate_delete_ike_sa_internal (vlib_main_t * vm,
4073 ikev2_main_per_thread_data_t * tkm,
4074 ikev2_sa_t * sa, u8 send_notification)
4076 ikev2_main_t *km = &ikev2_main;
4077 ip_address_t *src, *dst;
4079 ikev2_child_sa_t *c;
4081 /* Create the Initiator notification for IKE SA removal */
4086 vec_resize (sa->del, 1);
4087 sa->del->protocol_id = IKEV2_PROTOCOL_IKE;
4088 sa->del->spi = sa->ispi;
4090 if (send_notification)
4092 bi0 = ikev2_get_new_ike_header_buff (vm, &b0);
4095 ikev2_log_error ("buffer alloc failure");
4099 ike0 = vlib_buffer_get_current (b0);
4100 ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL;
4101 ike0->ispi = clib_host_to_net_u64 (sa->ispi);
4102 ike0->rspi = clib_host_to_net_u64 (sa->rspi);
4104 ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id);
4105 sa->last_init_msg_id += 1;
4106 len = ikev2_generate_message (b0, sa, ike0, 0, 0, 0);
4110 if (ikev2_natt_active (sa))
4111 len = ikev2_insert_non_esp_marker (ike0, len);
4113 if (sa->is_initiator)
4124 ikev2_send_ike (vm, src, dst, bi0, len,
4125 ikev2_get_port (sa), sa->dst_port, 0);
4129 /* delete local SA */
4130 vec_foreach (c, sa->childs)
4131 ikev2_delete_tunnel_interface (km->vnet_main, sa, c);
4133 u64 rspi = sa->rspi;
4134 ikev2_sa_free_all_vec (sa);
4135 uword *p = hash_get (tkm->sa_by_rspi, rspi);
4138 hash_unset (tkm->sa_by_rspi, rspi);
4139 pool_put (tkm->sas, sa);
4144 ikev2_cleanup_profile_sessions (ikev2_main_t * km, ikev2_profile_t * p)
4146 ikev2_main_per_thread_data_t *tkm;
4148 u32 pi = p - km->profiles;
4152 pool_foreach (sa, km->sais) {
4153 if (pi == sa->profile_index)
4154 vec_add1 (del_sai, sa - km->sais);
4157 vec_foreach (sai, del_sai)
4159 sa = pool_elt_at_index (km->sais, sai[0]);
4160 ikev2_sa_free_all_vec (sa);
4161 hash_unset (km->sa_by_ispi, sa->ispi);
4162 pool_put (km->sais, sa);
4164 vec_reset_length (del_sai);
4166 vec_foreach (tkm, km->per_thread_data)
4168 pool_foreach (sa, tkm->sas) {
4169 if (sa->profile_index != ~0 && pi == sa->profile_index)
4170 vec_add1 (del_sai, sa - tkm->sas);
4173 vec_foreach (sai, del_sai)
4175 sa = pool_elt_at_index (tkm->sas, sai[0]);
4176 ikev2_initiate_delete_ike_sa_internal (km->vlib_main, tkm, sa, 1);
4179 vec_reset_length (del_sai);
4186 ikev2_profile_responder_free (ikev2_responder_t *r)
4188 vec_free (r->hostname);
4192 ikev2_profile_free (ikev2_profile_t * p)
4196 vec_free (p->auth.data);
4198 EVP_PKEY_free (p->auth.key);
4200 ikev2_profile_responder_free (&p->responder);
4202 vec_free (p->loc_id.data);
4203 vec_free (p->rem_id.data);
4207 ikev2_bind (vlib_main_t *vm, ikev2_main_t *km)
4209 if (0 == km->bind_refcount)
4211 udp_register_dst_port (vm, IKEV2_PORT, ikev2_node_ip4.index, 1);
4212 udp_register_dst_port (vm, IKEV2_PORT, ikev2_node_ip6.index, 0);
4213 udp_register_dst_port (vm, IKEV2_PORT_NATT, ikev2_node_ip4.index, 1);
4214 udp_register_dst_port (vm, IKEV2_PORT_NATT, ikev2_node_ip6.index, 0);
4216 vlib_punt_register (km->punt_hdl,
4217 ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0],
4221 km->bind_refcount++;
4225 ikev2_unbind (vlib_main_t *vm, ikev2_main_t *km)
4227 km->bind_refcount--;
4228 if (0 == km->bind_refcount)
4230 vlib_punt_unregister (km->punt_hdl,
4231 ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0],
4234 udp_unregister_dst_port (vm, IKEV2_PORT_NATT, 0);
4235 udp_unregister_dst_port (vm, IKEV2_PORT_NATT, 1);
4236 udp_unregister_dst_port (vm, IKEV2_PORT, 0);
4237 udp_unregister_dst_port (vm, IKEV2_PORT, 1);
4241 static void ikev2_lazy_init (ikev2_main_t *km);
4244 ikev2_add_del_profile (vlib_main_t * vm, u8 * name, int is_add)
4246 ikev2_main_t *km = &ikev2_main;
4249 ikev2_lazy_init (km);
4253 if (ikev2_profile_index_by_name (name))
4254 return clib_error_return (0, "policy %v already exists", name);
4256 pool_get (km->profiles, p);
4257 clib_memset (p, 0, sizeof (*p));
4258 p->name = vec_dup (name);
4259 p->ipsec_over_udp_port = IPSEC_UDP_PORT_NONE;
4260 p->responder.sw_if_index = ~0;
4262 uword index = p - km->profiles;
4263 mhash_set_mem (&km->profile_index_by_name, name, &index, 0);
4265 ikev2_bind (vm, km);
4269 p = ikev2_profile_index_by_name (name);
4271 return clib_error_return (0, "policy %v does not exists", name);
4273 ikev2_unbind (vm, km);
4275 ikev2_unregister_udp_port (p);
4276 ikev2_cleanup_profile_sessions (km, p);
4278 ikev2_profile_free (p);
4279 pool_put (km->profiles, p);
4280 mhash_unset (&km->profile_index_by_name, name, 0);
4286 ikev2_set_profile_auth (vlib_main_t * vm, u8 * name, u8 auth_method,
4287 u8 * auth_data, u8 data_hex_format)
4292 p = ikev2_profile_index_by_name (name);
4296 r = clib_error_return (0, "unknown profile %v", name);
4301 EVP_PKEY_free (p->auth.key);
4302 vec_free (p->auth.data);
4304 p->auth.method = auth_method;
4305 p->auth.data = vec_dup (auth_data);
4306 p->auth.hex = data_hex_format;
4308 if (auth_method == IKEV2_AUTH_METHOD_RSA_SIG)
4310 vec_add1 (p->auth.data, 0);
4311 p->auth.key = ikev2_load_cert_file (p->auth.data);
4312 if (p->auth.key == NULL)
4313 return clib_error_return (0, "load cert '%s' failed", p->auth.data);
4320 ikev2_is_id_supported (u8 id_type)
4322 return (id_type == IKEV2_ID_TYPE_ID_IPV4_ADDR ||
4323 id_type == IKEV2_ID_TYPE_ID_IPV6_ADDR ||
4324 id_type == IKEV2_ID_TYPE_ID_RFC822_ADDR ||
4325 id_type == IKEV2_ID_TYPE_ID_FQDN);
4329 ikev2_set_profile_id (vlib_main_t * vm, u8 * name, u8 id_type, u8 * data,
4335 if (!ikev2_is_id_supported (id_type))
4337 r = clib_error_return (0, "unsupported identity type %U",
4338 format_ikev2_id_type, id_type);
4342 p = ikev2_profile_index_by_name (name);
4346 r = clib_error_return (0, "unknown profile %v", name);
4352 vec_free (p->loc_id.data);
4353 p->loc_id.type = id_type;
4354 p->loc_id.data = vec_dup (data);
4358 vec_free (p->rem_id.data);
4359 p->rem_id.type = id_type;
4360 p->rem_id.data = vec_dup (data);
4367 ikev2_set_ts_type (ikev2_ts_t *ts, const ip_address_t *addr)
4369 if (ip_addr_version (addr) == AF_IP4)
4370 ts->ts_type = TS_IPV4_ADDR_RANGE;
4372 ts->ts_type = TS_IPV6_ADDR_RANGE;
4376 ikev2_set_ts_addrs (ikev2_ts_t *ts, const ip_address_t *start,
4377 const ip_address_t *end)
4379 ip_address_copy (&ts->start_addr, start);
4380 ip_address_copy (&ts->end_addr, end);
4384 ikev2_set_profile_ts (vlib_main_t * vm, u8 * name, u8 protocol_id,
4385 u16 start_port, u16 end_port, ip_address_t start_addr,
4386 ip_address_t end_addr, int is_local)
4391 p = ikev2_profile_index_by_name (name);
4395 r = clib_error_return (0, "unknown profile %v", name);
4399 if (ip_addr_version (&start_addr) != ip_addr_version (&end_addr))
4400 return clib_error_return (0, "IP address version mismatch!");
4404 ikev2_set_ts_addrs (&p->loc_ts, &start_addr, &end_addr);
4405 p->loc_ts.start_port = start_port;
4406 p->loc_ts.end_port = end_port;
4407 p->loc_ts.protocol_id = protocol_id;
4408 ikev2_set_ts_type (&p->loc_ts, &start_addr);
4412 ikev2_set_ts_addrs (&p->rem_ts, &start_addr, &end_addr);
4413 p->rem_ts.start_port = start_port;
4414 p->rem_ts.end_port = end_port;
4415 p->rem_ts.protocol_id = protocol_id;
4416 ikev2_set_ts_type (&p->rem_ts, &start_addr);
4423 ikev2_set_profile_responder_hostname (vlib_main_t *vm, u8 *name, u8 *hostname,
4429 p = ikev2_profile_index_by_name (name);
4433 r = clib_error_return (0, "unknown profile %v", name);
4437 p->responder.is_resolved = 0;
4438 p->responder.sw_if_index = sw_if_index;
4439 p->responder.hostname = vec_dup (hostname);
4445 ikev2_set_profile_responder (vlib_main_t * vm, u8 * name,
4446 u32 sw_if_index, ip_address_t addr)
4451 p = ikev2_profile_index_by_name (name);
4455 r = clib_error_return (0, "unknown profile %v", name);
4459 p->responder.is_resolved = 1;
4460 p->responder.sw_if_index = sw_if_index;
4461 ip_address_copy (&p->responder.addr, &addr);
4467 ikev2_set_profile_ike_transforms (vlib_main_t * vm, u8 * name,
4468 ikev2_transform_encr_type_t crypto_alg,
4469 ikev2_transform_integ_type_t integ_alg,
4470 ikev2_transform_dh_type_t dh_type,
4471 u32 crypto_key_size)
4475 p = ikev2_profile_index_by_name (name);
4477 return clib_error_return (0, "unknown profile %v", name);
4479 if ((IKEV2_TRANSFORM_INTEG_TYPE_NONE != integ_alg) +
4480 (IKEV2_TRANSFORM_ENCR_TYPE_AES_GCM_16 == crypto_alg) !=
4482 return clib_error_return (0, "invalid cipher + integrity algorithm");
4484 p->ike_ts.crypto_alg = crypto_alg;
4485 p->ike_ts.integ_alg = integ_alg;
4486 p->ike_ts.dh_type = dh_type;
4487 p->ike_ts.crypto_key_size = crypto_key_size;
4492 ikev2_set_profile_esp_transforms (vlib_main_t * vm, u8 * name,
4493 ikev2_transform_encr_type_t crypto_alg,
4494 ikev2_transform_integ_type_t integ_alg,
4495 u32 crypto_key_size)
4500 p = ikev2_profile_index_by_name (name);
4504 r = clib_error_return (0, "unknown profile %v", name);
4508 p->esp_ts.crypto_alg = crypto_alg;
4509 p->esp_ts.integ_alg = integ_alg;
4510 p->esp_ts.crypto_key_size = crypto_key_size;
4515 ikev2_set_profile_tunnel_interface (vlib_main_t * vm,
4516 u8 * name, u32 sw_if_index)
4521 p = ikev2_profile_index_by_name (name);
4525 r = clib_error_return (0, "unknown profile %v", name);
4529 p->tun_itf = sw_if_index;
4535 ikev2_set_profile_ipsec_udp_port (vlib_main_t * vm, u8 * name, u16 port,
4538 ikev2_profile_t *p = ikev2_profile_index_by_name (name);
4539 vnet_api_error_t rv = 0;
4542 return VNET_API_ERROR_INVALID_VALUE;
4546 if (p->ipsec_over_udp_port != IPSEC_UDP_PORT_NONE)
4547 return VNET_API_ERROR_VALUE_EXIST;
4549 rv = ikev2_register_udp_port (p, port);
4553 if (p->ipsec_over_udp_port == IPSEC_UDP_PORT_NONE)
4554 return VNET_API_ERROR_INVALID_VALUE;
4556 ikev2_unregister_udp_port (p);
4562 ikev2_set_profile_udp_encap (vlib_main_t * vm, u8 * name)
4564 ikev2_profile_t *p = ikev2_profile_index_by_name (name);
4569 r = clib_error_return (0, "unknown profile %v", name);
4578 ikev2_set_profile_sa_lifetime (vlib_main_t * vm, u8 * name,
4579 u64 lifetime, u32 jitter, u32 handover,
4585 p = ikev2_profile_index_by_name (name);
4589 r = clib_error_return (0, "unknown profile %v", name);
4593 p->lifetime = lifetime;
4594 p->lifetime_jitter = jitter;
4595 p->handover = handover;
4596 p->lifetime_maxdata = maxdata;
4601 ikev2_get_if_address (u32 sw_if_index, ip_address_family_t af,
4602 ip_address_t * out_addr)
4604 ip4_address_t *if_ip4;
4605 ip6_address_t *if_ip6;
4609 if_ip4 = ip4_interface_first_address (&ip4_main, sw_if_index, 0);
4612 ip_address_set (out_addr, if_ip4, AF_IP4);
4618 if_ip6 = ip6_interface_first_address (&ip6_main, sw_if_index);
4621 ip_address_set (out_addr, if_ip6, AF_IP6);
4628 static clib_error_t *
4629 ikev2_resolve_responder_hostname (vlib_main_t *vm, ikev2_responder_t *r)
4631 ikev2_main_t *km = &ikev2_main;
4632 dns_cache_entry_t *ep = 0;
4633 dns_pending_request_t _t0, *t0 = &_t0;
4634 dns_resolve_name_t _rn, *rn = &_rn;
4638 if (!km->dns_resolve_name_ptr)
4639 return clib_error_return (0, "cannot load symbols from dns plugin");
4641 t0->request_type = DNS_API_PENDING_NAME_TO_IP;
4642 /* VPP main curse: IKEv2 uses only non-NULL terminated vectors internally
4643 * whereas DNS resolver expects a NULL-terminated C-string */
4644 name = vec_dup (r->hostname);
4645 vec_terminate_c_string (name);
4646 rv = ((__typeof__ (dns_resolve_name) *) km->dns_resolve_name_ptr) (name, &ep,
4650 return clib_error_return (0, "dns lookup failure");
4655 ip_address_copy (&r->addr, &rn->address);
4661 ikev2_initiate_sa_init (vlib_main_t * vm, u8 * name)
4665 ikev2_main_t *km = &ikev2_main;
4669 int len = sizeof (ike_header_t), valid_ip = 0;
4670 ip_address_t src_if_ip = ip_address_initializer;
4672 p = ikev2_profile_index_by_name (name);
4676 r = clib_error_return (0, "unknown profile %v", name);
4680 if (p->responder.sw_if_index == ~0 ||
4681 (ip_address_is_zero (&p->responder.addr) &&
4682 vec_len (p->responder.hostname) == 0))
4684 r = clib_error_return (0, "responder not set for profile %v", name);
4688 if (!p->responder.is_resolved)
4690 /* try to resolve using dns plugin
4691 * success does not mean we have resolved the name */
4692 r = ikev2_resolve_responder_hostname (vm, &p->responder);
4697 if (p->responder.is_resolved &&
4698 ikev2_get_if_address (p->responder.sw_if_index,
4699 ip_addr_version (&p->responder.addr), &src_if_ip))
4704 /* Prepare the SA and the IKE payload */
4706 clib_memset (&sa, 0, sizeof (ikev2_sa_t));
4707 ikev2_payload_chain_t *chain = 0;
4708 ikev2_payload_new_chain (chain);
4710 /* Build the IKE proposal payload */
4711 ikev2_sa_proposal_t *proposals = 0;
4712 ikev2_set_initiator_proposals (vm, &sa, &p->ike_ts, &proposals, 1);
4713 proposals[0].proposal_num = 1;
4714 proposals[0].protocol_id = IKEV2_PROTOCOL_IKE;
4716 /* Add and then cleanup proposal data */
4717 ikev2_payload_add_sa (chain, proposals, 0);
4718 ikev2_sa_free_proposal_vector (&proposals);
4720 sa.is_initiator = 1;
4721 sa.profile_index = p - km->profiles;
4722 sa.state = IKEV2_STATE_SA_INIT;
4723 sa.tun_itf = p->tun_itf;
4724 sa.udp_encap = p->udp_encap;
4725 if (p->natt_disabled)
4726 sa.natt_state = IKEV2_NATT_DISABLED;
4727 sa.ipsec_over_udp_port = p->ipsec_over_udp_port;
4728 sa.is_tun_itf_set = 1;
4729 sa.initial_contact = 1;
4730 sa.dst_port = IKEV2_PORT;
4732 ikev2_generate_sa_error_t rc = ikev2_generate_sa_init_data (&sa);
4733 if (rc != IKEV2_GENERATE_SA_INIT_OK)
4735 ikev2_sa_free_all_vec (&sa);
4736 ikev2_payload_destroy_chain (chain);
4737 return clib_error_return (0, "%U", format_ikev2_gen_sa_error, rc);
4740 ikev2_payload_add_ke (chain, sa.dh_group, sa.i_dh_data);
4741 ikev2_payload_add_nonce (chain, sa.i_nonce);
4743 /* Build the child SA proposal */
4744 vec_resize (sa.childs, 1);
4745 ikev2_set_initiator_proposals (vm, &sa, &p->esp_ts,
4746 &sa.childs[0].i_proposals, 0);
4747 sa.childs[0].i_proposals[0].proposal_num = 1;
4748 sa.childs[0].i_proposals[0].protocol_id = IKEV2_PROTOCOL_ESP;
4749 RAND_bytes ((u8 *) & sa.childs[0].i_proposals[0].spi,
4750 sizeof (sa.childs[0].i_proposals[0].spi));
4751 sa.childs[0].i_proposals[0].spi &= 0xffffffff;
4753 /* Add NAT detection notification messages (mandatory) */
4754 u8 *nat_detection_sha1 = ikev2_compute_nat_sha1 (
4755 clib_host_to_net_u64 (sa.ispi), clib_host_to_net_u64 (sa.rspi), &src_if_ip,
4756 clib_host_to_net_u16 (IKEV2_PORT));
4758 ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP,
4759 nat_detection_sha1);
4760 vec_free (nat_detection_sha1);
4761 nat_detection_sha1 =
4762 ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa.ispi),
4763 clib_host_to_net_u64 (sa.rspi),
4765 clib_host_to_net_u16 (sa.dst_port));
4766 ikev2_payload_add_notify (chain,
4767 IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP,
4768 nat_detection_sha1);
4769 vec_free (nat_detection_sha1);
4771 u8 *sig_hash_algo = vec_new (u8, 8);
4772 u64 tmpsig = clib_host_to_net_u64 (0x0001000200030004);
4773 clib_memcpy_fast (sig_hash_algo, &tmpsig, sizeof (tmpsig));
4774 ikev2_payload_add_notify (chain,
4775 IKEV2_NOTIFY_MSG_SIGNATURE_HASH_ALGORITHMS,
4777 vec_free (sig_hash_algo);
4779 bi0 = ikev2_get_new_ike_header_buff (vm, &b0);
4782 ikev2_sa_free_all_vec (&sa);
4783 ikev2_payload_destroy_chain (chain);
4784 char *errmsg = "buffer alloc failure";
4785 ikev2_log_error (errmsg);
4786 return clib_error_return (0, errmsg);
4788 ike0 = vlib_buffer_get_current (b0);
4790 /* Buffer update and boilerplate */
4791 len += vec_len (chain->data);
4792 ike0->nextpayload = chain->first_payload_type;
4793 ike0->length = clib_host_to_net_u32 (len);
4794 clib_memcpy_fast (ike0->payload, chain->data, vec_len (chain->data));
4795 ikev2_payload_destroy_chain (chain);
4797 ike0->version = IKE_VERSION_2;
4798 ike0->flags = IKEV2_HDR_FLAG_INITIATOR;
4799 ike0->exchange = IKEV2_EXCHANGE_SA_INIT;
4800 ike0->ispi = clib_host_to_net_u64 (sa.ispi);
4803 sa.last_init_msg_id += 1;
4805 /* store whole IKE payload - needed for PSK auth */
4806 vec_reset_length (sa.last_sa_init_req_packet_data);
4807 vec_add (sa.last_sa_init_req_packet_data, ike0, len);
4809 /* add data to the SA then add it to the pool */
4810 ip_address_copy (&sa.iaddr, &src_if_ip);
4811 ip_address_copy (&sa.raddr, &p->responder.addr);
4812 sa.i_id.type = p->loc_id.type;
4813 sa.i_id.data = vec_dup (p->loc_id.data);
4814 sa.r_id.type = p->rem_id.type;
4815 sa.r_id.data = vec_dup (p->rem_id.data);
4816 sa.i_auth.method = p->auth.method;
4817 sa.i_auth.hex = p->auth.hex;
4818 sa.i_auth.data = vec_dup (p->auth.data);
4819 sa.sw_if_index = p->responder.sw_if_index;
4820 vec_add (sa.childs[0].tsi, &p->loc_ts, 1);
4821 vec_add (sa.childs[0].tsr, &p->rem_ts, 1);
4823 ikev2_initial_contact_cleanup (0, &sa);
4825 /* add SA to the pool */
4826 ikev2_sa_t *sa0 = 0;
4827 pool_get (km->sais, sa0);
4828 clib_memcpy_fast (sa0, &sa, sizeof (*sa0));
4829 hash_set (km->sa_by_ispi, sa0->ispi, sa0 - km->sais);
4833 ikev2_send_ike (vm, &src_if_ip, &p->responder.addr, bi0, len, IKEV2_PORT,
4834 sa.dst_port, sa.sw_if_index);
4837 ("ispi %lx rspi %lx IKEV2_EXCHANGE_SA_INIT sent to ",
4838 clib_host_to_net_u64 (sa0->ispi), 0,
4839 ip_addr_v4 (&p->responder.addr).as_u32,
4840 ip_addr_version (&p->responder.addr) == AF_IP4);
4847 ikev2_delete_child_sa_internal (vlib_main_t * vm, ikev2_sa_t * sa,
4848 ikev2_child_sa_t * csa)
4850 /* Create the Initiator notification for child SA removal */
4851 ikev2_main_t *km = &ikev2_main;
4857 bi0 = ikev2_get_new_ike_header_buff (vm, &b0);
4860 ikev2_log_error ("buffer alloc failure");
4864 ike0 = vlib_buffer_get_current (b0);
4865 ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL;
4866 ike0->ispi = clib_host_to_net_u64 (sa->ispi);
4867 ike0->rspi = clib_host_to_net_u64 (sa->rspi);
4869 vec_resize (sa->del, 1);
4870 sa->del->protocol_id = IKEV2_PROTOCOL_ESP;
4871 sa->del->spi = csa->i_proposals->spi;
4872 ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id);
4873 sa->last_init_msg_id += 1;
4874 len = ikev2_generate_message (b0, sa, ike0, 0, 0, 0);
4878 if (ikev2_natt_active (sa))
4879 len = ikev2_insert_non_esp_marker (ike0, len);
4880 ikev2_send_ike (vm, &sa->iaddr, &sa->raddr, bi0, len,
4881 ikev2_get_port (sa), sa->dst_port, sa->sw_if_index);
4883 /* delete local child SA */
4884 ikev2_delete_tunnel_interface (km->vnet_main, sa, csa);
4885 ikev2_sa_del_child_sa (sa, csa);
4889 ikev2_initiate_delete_child_sa (vlib_main_t * vm, u32 ispi)
4892 ikev2_main_t *km = &ikev2_main;
4893 ikev2_main_per_thread_data_t *tkm;
4894 ikev2_sa_t *fsa = 0;
4895 ikev2_child_sa_t *fchild = 0;
4897 /* Search for the child SA */
4898 vec_foreach (tkm, km->per_thread_data)
4903 pool_foreach (sa, tkm->sas) {
4904 fchild = ikev2_sa_get_child(sa, ispi, IKEV2_PROTOCOL_ESP, 1);
4913 if (!fchild || !fsa)
4915 r = clib_error_return (0, "Child SA not found");
4920 ikev2_delete_child_sa_internal (vm, fsa, fchild);
4927 ikev2_initiate_delete_ike_sa (vlib_main_t * vm, u64 ispi)
4930 ikev2_main_t *km = &ikev2_main;
4931 ikev2_main_per_thread_data_t *tkm;
4932 ikev2_sa_t *fsa = 0;
4933 ikev2_main_per_thread_data_t *ftkm = 0;
4935 /* Search for the IKE SA */
4936 vec_foreach (tkm, km->per_thread_data)
4941 pool_foreach (sa, tkm->sas) {
4942 if (sa->ispi == ispi)
4953 r = clib_error_return (0, "IKE SA not found");
4957 ikev2_initiate_delete_ike_sa_internal (vm, ftkm, fsa, 1);
4962 ikev2_rekey_child_sa_internal (vlib_main_t * vm, ikev2_sa_t * sa,
4963 ikev2_child_sa_t * csa)
4965 /* Create the Initiator request for create child SA */
4971 bi0 = ikev2_get_new_ike_header_buff (vm, &b0);
4974 ikev2_log_error ("buffer alloc failure");
4978 ike0 = vlib_buffer_get_current (b0);
4979 ike0->version = IKE_VERSION_2;
4980 ike0->flags = IKEV2_HDR_FLAG_INITIATOR;
4981 ike0->exchange = IKEV2_EXCHANGE_CREATE_CHILD_SA;
4982 ike0->ispi = clib_host_to_net_u64 (sa->ispi);
4983 ike0->rspi = clib_host_to_net_u64 (sa->rspi);
4984 ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id);
4985 sa->last_init_msg_id += 1;
4987 ikev2_rekey_t *rekey;
4988 vec_reset_length (sa->rekey);
4989 vec_add2 (sa->rekey, rekey, 1);
4991 ikev2_sa_proposal_t *proposals = vec_dup (csa->i_proposals);
4994 RAND_bytes ((u8 *) & proposals[0].spi, sizeof (proposals[0].spi));
4995 proposals[0].spi &= 0xffffffff;
4996 rekey->spi = proposals[0].spi;
4997 rekey->ispi = csa->i_proposals->spi;
4998 len = ikev2_generate_message (b0, sa, ike0, proposals, 0, 0);
5002 if (ikev2_natt_active (sa))
5003 len = ikev2_insert_non_esp_marker (ike0, len);
5004 ikev2_send_ike (vm, &sa->iaddr, &sa->raddr, bi0, len,
5005 ikev2_get_port (sa), ikev2_get_port (sa), sa->sw_if_index);
5006 vec_free (proposals);
5010 ikev2_initiate_rekey_child_sa (vlib_main_t * vm, u32 ispi)
5013 ikev2_main_t *km = &ikev2_main;
5014 ikev2_main_per_thread_data_t *tkm;
5015 ikev2_sa_t *fsa = 0;
5016 ikev2_child_sa_t *fchild = 0;
5018 /* Search for the child SA */
5019 vec_foreach (tkm, km->per_thread_data)
5024 pool_foreach (sa, tkm->sas) {
5025 fchild = ikev2_sa_get_child(sa, ispi, IKEV2_PROTOCOL_ESP, 1);
5034 if (!fchild || !fsa)
5036 r = clib_error_return (0, "Child SA not found");
5041 ikev2_rekey_child_sa_internal (vm, fsa, fchild);
5048 ikev2_sa_sw_if_match (ikev2_sa_t * sa, u32 sw_if_index)
5050 return (sa->sw_if_index == sw_if_index) && sa->is_initiator;
5054 ikev2_sa_del (ikev2_profile_t * p, u32 sw_if_index)
5056 u64 *ispi, *ispi_vec = 0;
5057 ikev2_sa_t *sa, **sap, **sa_vec = 0;
5058 ikev2_main_t *km = &ikev2_main;
5059 ikev2_main_per_thread_data_t *tkm;
5060 p->responder.sw_if_index = ~0;
5062 vec_foreach (tkm, km->per_thread_data)
5064 pool_foreach (sa, tkm->sas) {
5065 if (ikev2_sa_sw_if_match (sa, sw_if_index))
5066 vec_add1 (sa_vec, sa);
5069 vec_foreach (sap, sa_vec)
5071 ikev2_initiate_delete_ike_sa_internal (km->vlib_main, tkm, *sap, 0);
5073 vec_reset_length (sa_vec);
5077 pool_foreach (sa, km->sais) {
5078 if (ikev2_sa_sw_if_match (sa, sw_if_index))
5079 vec_add1 (ispi_vec, sa->ispi);
5082 vec_foreach (ispi, ispi_vec)
5084 ikev2_del_sa_init_from_main (ispi);
5087 vec_free (ispi_vec);
5090 static clib_error_t *
5091 ikev2_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
5093 ikev2_main_t *km = &ikev2_main;
5099 pool_foreach (p, km->profiles) {
5100 if (p->responder.sw_if_index == sw_if_index)
5101 ikev2_sa_del (p, sw_if_index);
5107 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ikev2_sw_interface_add_del);
5110 ikev2_init (vlib_main_t * vm)
5112 ikev2_main_t *km = &ikev2_main;
5114 clib_memset (km, 0, sizeof (ikev2_main_t));
5116 km->log_level = IKEV2_LOG_ERROR;
5117 km->log_class = vlib_log_register_class ("ikev2", 0);
5119 km->vnet_main = vnet_get_main ();
5122 km->liveness_period = IKEV2_LIVENESS_PERIOD_CHECK;
5123 km->liveness_max_retries = IKEV2_LIVENESS_RETRIES;
5128 VLIB_INIT_FUNCTION (ikev2_init) = {
5129 .runs_after = VLIB_INITS ("ipsec_init", "ipsec_punt_init"),
5133 ikev2_mngr_process_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * csa,
5136 ikev2_main_t *km = &ikev2_main;
5137 ikev2_profile_t *p = 0;
5138 vlib_main_t *vm = km->vlib_main;
5139 f64 now = vlib_time_now (vm);
5142 if (sa->profile_index != ~0)
5143 p = pool_elt_at_index (km->profiles, sa->profile_index);
5145 if (sa->is_initiator && p && csa->time_to_expiration
5146 && now > csa->time_to_expiration)
5148 if (!csa->is_expired || csa->rekey_retries > 0)
5150 ikev2_rekey_child_sa_internal (vm, sa, csa);
5151 csa->time_to_expiration = now + p->handover;
5152 csa->is_expired = 1;
5153 if (csa->rekey_retries == 0)
5155 csa->rekey_retries = 5;
5157 else if (csa->rekey_retries > 0)
5159 csa->rekey_retries--;
5160 ikev2_log_debug ("Rekeying Child SA 0x%x, retries left %d",
5161 csa->i_proposals->spi, csa->rekey_retries);
5162 if (csa->rekey_retries == 0)
5164 csa->rekey_retries = -1;
5171 csa->time_to_expiration = 0;
5172 ikev2_delete_child_sa_internal (vm, sa, csa);
5180 ipip_tunnel_t *ipip = NULL;
5181 u32 sw_if_index = sa->is_tun_itf_set ? sa->tun_itf : ~0;
5182 if (~0 == sw_if_index)
5184 ip46_address_t local_ip;
5185 ip46_address_t remote_ip;
5186 if (sa->is_initiator)
5188 local_ip = to_ip46 (ip_addr_version (&sa->iaddr),
5189 ip_addr_bytes (&sa->iaddr));
5190 remote_ip = to_ip46 (ip_addr_version (&sa->raddr),
5191 ip_addr_bytes (&sa->raddr));
5195 local_ip = to_ip46 (ip_addr_version (&sa->raddr),
5196 ip_addr_bytes (&sa->raddr));
5197 remote_ip = to_ip46 (ip_addr_version (&sa->iaddr),
5198 ip_addr_bytes (&sa->iaddr));
5201 ipip_tunnel_key_t key = {
5204 .transport = IPIP_TRANSPORT_IP4,
5208 ipip = ipip_tunnel_db_find (&key);
5211 sw_if_index = ipip->sw_if_index;
5217 vec_add1 (sas_in, csa->remote_sa_id);
5218 vlib_worker_thread_barrier_sync (vm);
5219 int rv = ipsec_tun_protect_update (sw_if_index, NULL,
5220 csa->local_sa_id, sas_in);
5223 ipsec_sa_unlock_id (ikev2_flip_alternate_sa_bit (csa->remote_sa_id));
5224 vlib_worker_thread_barrier_release (vm);
5231 ikev2_set_log_level (ikev2_log_level_t log_level)
5233 ikev2_main_t *km = &ikev2_main;
5235 if (log_level >= IKEV2_LOG_MAX)
5237 ikev2_log_error ("unknown logging level %d", log_level);
5241 km->log_level = log_level;
5246 ikev2_set_liveness_params (u32 period, u32 max_retries)
5248 ikev2_main_t *km = &ikev2_main;
5250 if (period == 0 || max_retries == 0)
5251 return clib_error_return (0, "invalid args");
5253 km->liveness_period = period;
5254 km->liveness_max_retries = max_retries;
5259 ikev2_profile_natt_disable (u8 * name)
5261 ikev2_profile_t *p = ikev2_profile_index_by_name (name);
5263 return clib_error_return (0, "unknown profile %v", name);
5265 p->natt_disabled = 1;
5270 ikev2_mngr_process_ipsec_sa (ipsec_sa_t * ipsec_sa)
5272 ikev2_main_t *km = &ikev2_main;
5273 vlib_main_t *vm = km->vlib_main;
5274 ikev2_main_per_thread_data_t *tkm;
5275 ikev2_sa_t *fsa = 0;
5276 ikev2_profile_t *p = 0;
5277 ikev2_child_sa_t *fchild = 0;
5278 f64 now = vlib_time_now (vm);
5279 vlib_counter_t counts;
5281 /* Search for the SA and child SA */
5282 vec_foreach (tkm, km->per_thread_data)
5287 pool_foreach (sa, tkm->sas) {
5288 fchild = ikev2_sa_get_child(sa, ipsec_sa->spi, IKEV2_PROTOCOL_ESP, 1);
5296 vlib_get_combined_counter (&ipsec_sa_counters,
5297 ipsec_sa->stat_index, &counts);
5299 if (fsa && fsa->profile_index != ~0 && fsa->is_initiator)
5300 p = pool_elt_at_index (km->profiles, fsa->profile_index);
5302 if (fchild && p && p->lifetime_maxdata)
5304 if (!fchild->is_expired && counts.bytes > p->lifetime_maxdata)
5306 fchild->time_to_expiration = now;
5312 ikev2_process_pending_sa_init_one (vlib_main_t *vm, ikev2_main_t *km,
5318 p = pool_elt_at_index (km->profiles, sa->profile_index);
5320 if (!p->responder.is_resolved)
5322 clib_error_t *r = ikev2_resolve_responder_hostname (vm, &p->responder);
5325 clib_error_free (r);
5329 if (!p->responder.is_resolved)
5332 ip_address_copy (&sa->raddr, &p->responder.addr);
5334 /* update nat detection destination hash */
5335 np = ikev2_find_ike_notify_payload (
5336 (ike_header_t *) sa->last_sa_init_req_packet_data,
5337 IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP);
5340 nat_sha = ikev2_compute_nat_sha1 (
5341 clib_host_to_net_u64 (sa->ispi), clib_host_to_net_u64 (sa->rspi),
5342 &sa->raddr, clib_host_to_net_u16 (sa->dst_port));
5343 clib_memcpy_fast (np, nat_sha, vec_len (nat_sha));
5348 if (ip_address_is_zero (&sa->iaddr))
5350 if (!ikev2_get_if_address (p->responder.sw_if_index,
5351 ip_addr_version (&p->responder.addr),
5355 /* update NAT detection payload */
5357 ikev2_find_ike_notify_payload
5358 ((ike_header_t *) sa->last_sa_init_req_packet_data,
5359 IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP);
5363 ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa->ispi),
5364 clib_host_to_net_u64 (sa->rspi),
5366 clib_host_to_net_u16 (IKEV2_PORT));
5367 clib_memcpy_fast (np, nat_sha, vec_len (nat_sha));
5372 if (vlib_buffer_alloc (km->vlib_main, &bi0, 1) != 1)
5375 vlib_buffer_t *b = vlib_get_buffer (km->vlib_main, bi0);
5376 clib_memcpy_fast (vlib_buffer_get_current (b),
5377 sa->last_sa_init_req_packet_data,
5378 vec_len (sa->last_sa_init_req_packet_data));
5380 ikev2_send_ike (km->vlib_main, &sa->iaddr, &sa->raddr, bi0,
5381 vec_len (sa->last_sa_init_req_packet_data),
5382 ikev2_get_port (sa), IKEV2_PORT, sa->sw_if_index);
5386 ikev2_process_pending_sa_init (vlib_main_t *vm, ikev2_main_t *km)
5392 hash_foreach (ispi, sai, km->sa_by_ispi,
5394 sa = pool_elt_at_index (km->sais, sai);
5395 if (sa->init_response_received)
5398 ikev2_process_pending_sa_init_one (vm, km, sa);
5403 ikev2_send_informational_request (ikev2_sa_t * sa)
5405 ikev2_main_t *km = &ikev2_main;
5406 ip_address_t *src, *dst;
5413 bi0 = ikev2_get_new_ike_header_buff (km->vlib_main, &b0);
5416 ikev2_log_error ("buffer alloc failure");
5420 ike0 = vlib_buffer_get_current (b0);
5421 ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL;
5422 ike0->ispi = clib_host_to_net_u64 (sa->ispi);
5423 ike0->rspi = clib_host_to_net_u64 (sa->rspi);
5424 ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id);
5426 sa->last_init_msg_id += 1;
5427 len = ikev2_generate_message (b0, sa, ike0, 0, 0, 0);
5431 if (ikev2_natt_active (sa))
5432 len = ikev2_insert_non_esp_marker (ike0, len);
5434 if (sa->is_initiator)
5445 dp = sa->dst_port ? sa->dst_port : ikev2_get_port (sa);
5446 ikev2_send_ike (km->vlib_main, src, dst, bi0, len, ikev2_get_port (sa), dp,
5451 ikev2_disable_dpd (void)
5453 ikev2_main_t *km = &ikev2_main;
5454 km->dpd_disabled = 1;
5458 ikev2_mngr_process_responder_sas (ikev2_sa_t *sa)
5460 ikev2_main_t *km = &ikev2_main;
5461 vlib_main_t *vm = km->vlib_main;
5463 if (!sa->keys_generated)
5466 if (sa->liveness_retries >= km->liveness_max_retries)
5469 f64 now = vlib_time_now (vm);
5471 if (sa->liveness_period_check < now)
5473 sa->liveness_retries++;
5474 sa->liveness_period_check = now + km->liveness_period;
5475 ikev2_send_informational_request (sa);
5481 ikev2_mngr_process_fn (vlib_main_t * vm, vlib_node_runtime_t * rt,
5484 ikev2_main_t *km = &ikev2_main;
5486 ikev2_child_sa_t *c;
5489 /* lazy init will wake it up */
5490 vlib_process_wait_for_event (vm);
5494 vlib_process_wait_for_event_or_clock (vm, 2);
5495 vlib_process_get_events (vm, NULL);
5497 /* process ike child sas */
5498 ikev2_main_per_thread_data_t *tkm;
5499 vec_foreach (tkm, km->per_thread_data)
5502 u32 *to_be_deleted = 0;
5504 pool_foreach (sa, tkm->sas) {
5505 ikev2_child_sa_t *c;
5508 if (sa->state == IKEV2_STATE_SA_INIT)
5510 if (vec_len (sa->childs) > 0)
5511 vec_add1 (to_be_deleted, sa - tkm->sas);
5513 else if (sa->state != IKEV2_STATE_AUTHENTICATED)
5516 if (sa->old_remote_id_present && 0 > sa->old_id_expiration)
5518 sa->old_remote_id_present = 0;
5522 sa->old_id_expiration -= 1;
5524 vec_foreach (c, sa->childs)
5525 ikev2_mngr_process_child_sa (sa, c, del_old_ids);
5527 if (!km->dpd_disabled && ikev2_mngr_process_responder_sas (sa))
5528 vec_add1 (to_be_deleted, sa - tkm->sas);
5531 vec_foreach (sai, to_be_deleted)
5533 sa = pool_elt_at_index (tkm->sas, sai[0]);
5534 const u32 profile_index = sa->profile_index;
5535 const int reinitiate = (sa->is_initiator && profile_index != ~0);
5536 vec_foreach (c, sa->childs)
5538 ikev2_delete_tunnel_interface (km->vnet_main, sa, c);
5539 ikev2_sa_del_child_sa (sa, c);
5541 ikev2_sa_free_all_vec (sa);
5542 hash_unset (tkm->sa_by_rspi, sa->rspi);
5543 pool_put (tkm->sas, sa);
5547 p = pool_elt_at_index (km->profiles, profile_index);
5550 clib_error_t *e = ikev2_initiate_sa_init (vm, p->name);
5553 ikev2_log_error ("%U", format_clib_error, e);
5554 clib_error_free (e);
5559 vec_free (to_be_deleted);
5562 /* process ipsec sas */
5564 pool_foreach (sa, ipsec_sa_pool)
5566 ikev2_mngr_process_ipsec_sa (sa);
5569 ikev2_process_pending_sa_init (vm, km);
5574 VLIB_REGISTER_NODE (ikev2_mngr_process_node, static) = {
5575 .function = ikev2_mngr_process_fn,
5576 .type = VLIB_NODE_TYPE_PROCESS,
5578 "ikev2-manager-process",
5582 ikev2_lazy_init (ikev2_main_t *km)
5584 vlib_thread_main_t *tm = vlib_get_thread_main ();
5587 if (km->lazy_init_done)
5590 ikev2_crypto_init (km);
5592 mhash_init_vec_string (&km->profile_index_by_name, sizeof (uword));
5594 vec_validate_aligned (km->per_thread_data, tm->n_vlib_mains - 1,
5595 CLIB_CACHE_LINE_BYTES);
5596 for (thread_id = 0; thread_id < tm->n_vlib_mains; thread_id++)
5598 ikev2_main_per_thread_data_t *ptd =
5599 vec_elt_at_index (km->per_thread_data, thread_id);
5601 ptd->sa_by_rspi = hash_create (0, sizeof (uword));
5603 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
5604 ptd->evp_ctx = EVP_CIPHER_CTX_new ();
5605 ptd->hmac_ctx = HMAC_CTX_new ();
5607 EVP_CIPHER_CTX_init (&ptd->_evp_ctx);
5608 ptd->evp_ctx = &ptd->_evp_ctx;
5609 HMAC_CTX_init (&(ptd->_hmac_ctx));
5610 ptd->hmac_ctx = &ptd->_hmac_ctx;
5614 km->sa_by_ispi = hash_create (0, sizeof (uword));
5615 km->sw_if_indices = hash_create (0, 0);
5617 km->punt_hdl = vlib_punt_client_register ("ikev2");
5619 km->dns_resolve_name_ptr =
5620 vlib_get_plugin_symbol ("dns_plugin.so", "dns_resolve_name");
5621 if (!km->dns_resolve_name_ptr)
5622 ikev2_log_error ("cannot load symbols from dns plugin");
5624 /* wake up ikev2 process */
5625 vlib_process_signal_event (vlib_get_first_main (),
5626 ikev2_mngr_process_node.index, 0, 0);
5628 km->lazy_init_done = 1;
5631 VLIB_PLUGIN_REGISTER () = {
5632 .version = VPP_BUILD_VER,
5633 .description = "Internet Key Exchange (IKEv2) Protocol",
5637 * fd.io coding-style-patch-verification: ON
5640 * eval: (c-set-style "gnu")