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 <vnet/pg/pg.h>
22 #include <vppinfra/error.h>
23 #include <vppinfra/random.h>
24 #include <vnet/udp/udp.h>
25 #include <vnet/ipsec/ipsec.h>
26 #include <vnet/ipsec/ipsec_tun.h>
27 #include <vnet/ipip/ipip.h>
28 #include <plugins/ikev2/ikev2.h>
29 #include <plugins/ikev2/ikev2_priv.h>
30 #include <openssl/sha.h>
31 #include <vnet/ipsec/ipsec_punt.h>
33 #define IKEV2_LIVENESS_RETRIES 3
34 #define IKEV2_LIVENESS_PERIOD_CHECK 30
36 ikev2_main_t ikev2_main;
38 static int ikev2_delete_tunnel_interface (vnet_main_t * vnm,
40 ikev2_child_sa_t * child);
42 #define ikev2_set_state(sa, v) do { \
44 ikev2_elog_sa_state("ispi %lx SA state changed to " #v, sa->ispi); \
54 format_ikev2_trace (u8 * s, va_list * args)
56 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
57 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
58 ikev2_trace_t *t = va_arg (*args, ikev2_trace_t *);
60 s = format (s, "ikev2: sw_if_index %d, next index %d",
61 t->sw_if_index, t->next_index);
65 #define foreach_ikev2_error \
66 _(PROCESSED, "IKEv2 packets processed") \
67 _(IKE_SA_INIT_RETRANSMIT, "IKE_SA_INIT retransmit ") \
68 _(IKE_SA_INIT_IGNORE, "IKE_SA_INIT ignore (IKE SA already auth)") \
69 _(IKE_REQ_RETRANSMIT, "IKE request retransmit") \
70 _(IKE_REQ_IGNORE, "IKE request ignore (old msgid)") \
71 _(NOT_IKEV2, "Non IKEv2 packets received") \
72 _(BAD_LENGTH, "Bad packet length") \
73 _(MALFORMED_PACKET, "Malformed packet") \
74 _(NO_BUFF_SPACE, "No buffer space")
78 #define _(sym,str) IKEV2_ERROR_##sym,
84 static char *ikev2_error_strings[] = {
85 #define _(sym,string) string,
92 IKEV2_NEXT_IP4_LOOKUP,
93 IKEV2_NEXT_IP4_ERROR_DROP,
99 IKEV2_NEXT_IP6_LOOKUP,
100 IKEV2_NEXT_IP6_ERROR_DROP,
104 typedef u32 ikev2_non_esp_marker;
106 static_always_inline u16
107 ikev2_get_port (ikev2_sa_t * sa)
109 return sa->natt ? IKEV2_PORT_NATT : IKEV2_PORT;
112 static_always_inline int
113 ikev2_insert_non_esp_marker (ike_header_t * ike, int len)
115 memmove ((u8 *) ike + sizeof (ikev2_non_esp_marker), ike, len);
116 clib_memset (ike, 0, sizeof (ikev2_non_esp_marker));
117 return len + sizeof (ikev2_non_esp_marker);
120 static ikev2_sa_transform_t *
121 ikev2_find_transform_data (ikev2_sa_transform_t * t)
123 ikev2_main_t *km = &ikev2_main;
124 ikev2_sa_transform_t *td;
126 vec_foreach (td, km->supported_transforms)
128 if (td->type != t->type)
131 if (td->transform_id != t->transform_id)
134 if (td->type == IKEV2_TRANSFORM_TYPE_ENCR)
136 if (vec_len (t->attrs) != 4 || t->attrs[0] != 0x80
137 || t->attrs[1] != 14)
140 if (((t->attrs[2] << 8 | t->attrs[3]) / 8) != td->key_len)
148 static ikev2_sa_proposal_t *
149 ikev2_select_proposal (ikev2_sa_proposal_t * proposals,
150 ikev2_protocol_id_t prot_id)
152 ikev2_sa_proposal_t *rv = 0;
153 ikev2_sa_proposal_t *proposal;
154 ikev2_sa_transform_t *transform, *new_t;
155 u8 mandatory_bitmap, optional_bitmap;
157 if (prot_id == IKEV2_PROTOCOL_IKE)
159 mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_ENCR) |
160 (1 << IKEV2_TRANSFORM_TYPE_PRF) | (1 << IKEV2_TRANSFORM_TYPE_DH);
161 optional_bitmap = mandatory_bitmap | (1 << IKEV2_TRANSFORM_TYPE_INTEG);
163 else if (prot_id == IKEV2_PROTOCOL_ESP)
165 mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_ENCR) |
166 (1 << IKEV2_TRANSFORM_TYPE_ESN);
167 optional_bitmap = mandatory_bitmap |
168 (1 << IKEV2_TRANSFORM_TYPE_INTEG) | (1 << IKEV2_TRANSFORM_TYPE_DH);
170 else if (prot_id == IKEV2_PROTOCOL_AH)
172 mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_INTEG) |
173 (1 << IKEV2_TRANSFORM_TYPE_ESN);
174 optional_bitmap = mandatory_bitmap | (1 << IKEV2_TRANSFORM_TYPE_DH);
179 vec_add2 (rv, proposal, 1);
181 vec_foreach (proposal, proposals)
184 if (proposal->protocol_id != prot_id)
187 vec_foreach (transform, proposal->transforms)
189 if ((1 << transform->type) & bitmap)
192 if (ikev2_find_transform_data (transform))
194 bitmap |= 1 << transform->type;
195 vec_add2 (rv->transforms, new_t, 1);
196 clib_memcpy_fast (new_t, transform, sizeof (*new_t));
197 new_t->attrs = vec_dup (transform->attrs);
201 if ((bitmap & mandatory_bitmap) == mandatory_bitmap &&
202 (bitmap & ~optional_bitmap) == 0)
204 rv->proposal_num = proposal->proposal_num;
205 rv->protocol_id = proposal->protocol_id;
206 RAND_bytes ((u8 *) & rv->spi, sizeof (rv->spi));
211 vec_free (rv->transforms);
220 ikev2_sa_transform_t *
221 ikev2_sa_get_td_for_type (ikev2_sa_proposal_t * p,
222 ikev2_transform_type_t type)
224 ikev2_sa_transform_t *t;
229 vec_foreach (t, p->transforms)
232 return ikev2_find_transform_data (t);
238 ikev2_sa_get_child (ikev2_sa_t * sa, u32 spi, ikev2_protocol_id_t prot_id,
242 vec_foreach (c, sa->childs)
244 ikev2_sa_proposal_t *proposal =
245 by_initiator ? &c->i_proposals[0] : &c->r_proposals[0];
246 if (proposal && proposal->spi == spi && proposal->protocol_id == prot_id)
254 ikev2_sa_free_proposal_vector (ikev2_sa_proposal_t ** v)
256 ikev2_sa_proposal_t *p;
257 ikev2_sa_transform_t *t;
264 vec_foreach (t, p->transforms)
268 vec_free (p->transforms);
274 ikev2_sa_free_child_sa (ikev2_child_sa_t * c)
276 ikev2_sa_free_proposal_vector (&c->r_proposals);
277 ikev2_sa_free_proposal_vector (&c->i_proposals);
287 ikev2_sa_free_all_child_sa (ikev2_child_sa_t ** childs)
290 vec_foreach (c, *childs) ikev2_sa_free_child_sa (c);
296 ikev2_sa_del_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * child)
298 ikev2_sa_free_child_sa (child);
299 vec_del1 (sa->childs, child - sa->childs);
303 ikev2_sa_free_all_vec (ikev2_sa_t * sa)
305 vec_free (sa->i_nonce);
306 vec_free (sa->r_nonce);
308 vec_free (sa->dh_shared_key);
309 vec_free (sa->dh_private_key);
310 vec_free (sa->i_dh_data);
311 vec_free (sa->r_dh_data);
313 ikev2_sa_free_proposal_vector (&sa->r_proposals);
314 ikev2_sa_free_proposal_vector (&sa->i_proposals);
317 vec_free (sa->sk_ai);
318 vec_free (sa->sk_ar);
319 vec_free (sa->sk_ei);
320 vec_free (sa->sk_er);
321 vec_free (sa->sk_pi);
322 vec_free (sa->sk_pr);
324 vec_free (sa->i_id.data);
325 vec_free (sa->r_id.data);
327 vec_free (sa->i_auth.data);
329 EVP_PKEY_free (sa->i_auth.key);
330 vec_free (sa->r_auth.data);
332 EVP_PKEY_free (sa->r_auth.key);
336 vec_free (sa->rekey);
338 vec_free (sa->last_sa_init_req_packet_data);
339 vec_free (sa->last_sa_init_res_packet_data);
341 vec_free (sa->last_res_packet_data);
343 ikev2_sa_free_all_child_sa (&sa->childs);
347 ikev2_delete_sa (ikev2_main_per_thread_data_t * ptd, ikev2_sa_t * sa)
351 ikev2_sa_free_all_vec (sa);
353 p = hash_get (ptd->sa_by_rspi, sa->rspi);
356 hash_unset (ptd->sa_by_rspi, sa->rspi);
357 pool_put (ptd->sas, sa);
362 ikev2_generate_sa_init_data (ikev2_sa_t * sa)
364 ikev2_sa_transform_t *t = 0, *t2;
365 ikev2_main_t *km = &ikev2_main;
367 if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE)
372 /* check if received DH group is on our list of supported groups */
373 vec_foreach (t2, km->supported_transforms)
375 if (t2->type == IKEV2_TRANSFORM_TYPE_DH && sa->dh_group == t2->dh_type)
384 sa->dh_group = IKEV2_TRANSFORM_DH_TYPE_NONE;
388 if (sa->is_initiator)
391 RAND_bytes ((u8 *) & sa->ispi, 8);
394 sa->i_nonce = vec_new (u8, IKEV2_NONCE_SIZE);
395 RAND_bytes ((u8 *) sa->i_nonce, IKEV2_NONCE_SIZE);
400 RAND_bytes ((u8 *) & sa->rspi, 8);
403 sa->r_nonce = vec_new (u8, IKEV2_NONCE_SIZE);
404 RAND_bytes ((u8 *) sa->r_nonce, IKEV2_NONCE_SIZE);
407 /* generate dh keys */
408 ikev2_generate_dh (sa, t);
413 ikev2_complete_sa_data (ikev2_sa_t * sa, ikev2_sa_t * sai)
415 ikev2_sa_transform_t *t = 0, *t2;
416 ikev2_main_t *km = &ikev2_main;
418 /*move some data to the new SA */
419 #define _(A) ({void* __tmp__ = (A); (A) = 0; __tmp__;})
420 sa->i_nonce = _(sai->i_nonce);
421 sa->i_dh_data = _(sai->i_dh_data);
422 sa->dh_private_key = _(sai->dh_private_key);
423 ip_address_copy (&sa->iaddr, &sai->iaddr);
424 ip_address_copy (&sa->raddr, &sai->raddr);
425 sa->is_initiator = sai->is_initiator;
426 sa->i_id.type = sai->i_id.type;
427 sa->r_id.type = sai->r_id.type;
428 sa->profile_index = sai->profile_index;
429 sa->tun_itf = sai->tun_itf;
430 sa->is_tun_itf_set = sai->is_tun_itf_set;
431 sa->i_id.data = _(sai->i_id.data);
432 sa->r_id.data = _(sai->r_id.data);
433 sa->i_auth.method = sai->i_auth.method;
434 sa->i_auth.hex = sai->i_auth.hex;
435 sa->i_auth.data = _(sai->i_auth.data);
436 sa->i_auth.key = _(sai->i_auth.key);
437 sa->last_sa_init_req_packet_data = _(sai->last_sa_init_req_packet_data);
438 sa->childs = _(sai->childs);
439 sa->udp_encap = sai->udp_encap;
440 sa->ipsec_over_udp_port = sai->ipsec_over_udp_port;
441 sa->dst_port = sai->dst_port;
442 sa->sw_if_index = sai->sw_if_index;
446 if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE)
451 /* check if received DH group is on our list of supported groups */
452 vec_foreach (t2, km->supported_transforms)
454 if (t2->type == IKEV2_TRANSFORM_TYPE_DH && sa->dh_group == t2->dh_type)
463 sa->dh_group = IKEV2_TRANSFORM_DH_TYPE_NONE;
468 /* generate dh keys */
469 ikev2_complete_dh (sa, t);
474 ikev2_calc_keys (ikev2_sa_t * sa)
477 /* calculate SKEYSEED = prf(Ni | Nr, g^ir) */
480 u16 integ_key_len = 0, salt_len = 0;
481 ikev2_sa_transform_t *tr_encr, *tr_prf, *tr_integ;
483 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR);
485 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
487 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG);
490 integ_key_len = tr_integ->key_len;
492 salt_len = sizeof (u32);
494 vec_append (s, sa->i_nonce);
495 vec_append (s, sa->r_nonce);
496 skeyseed = ikev2_calc_prf (tr_prf, s, sa->dh_shared_key);
498 /* Calculate S = Ni | Nr | SPIi | SPIr */
500 vec_add2 (s, tmp, 2 * sizeof (*spi));
502 spi[0] = clib_host_to_net_u64 (sa->ispi);
503 spi[1] = clib_host_to_net_u64 (sa->rspi);
505 /* calculate PRFplus */
507 int len = tr_prf->key_trunc + /* SK_d */
508 integ_key_len * 2 + /* SK_ai, SK_ar */
509 tr_encr->key_len * 2 + /* SK_ei, SK_er */
510 tr_prf->key_len * 2 + /* SK_pi, SK_pr */
513 keymat = ikev2_calc_prfplus (tr_prf, skeyseed, s, len);
520 sa->sk_d = vec_new (u8, tr_prf->key_trunc);
521 clib_memcpy_fast (sa->sk_d, keymat + pos, tr_prf->key_trunc);
522 pos += tr_prf->key_trunc;
527 sa->sk_ai = vec_new (u8, integ_key_len);
528 clib_memcpy_fast (sa->sk_ai, keymat + pos, integ_key_len);
529 pos += integ_key_len;
532 sa->sk_ar = vec_new (u8, integ_key_len);
533 clib_memcpy_fast (sa->sk_ar, keymat + pos, integ_key_len);
534 pos += integ_key_len;
538 sa->sk_ei = vec_new (u8, tr_encr->key_len + salt_len);
539 clib_memcpy_fast (sa->sk_ei, keymat + pos, tr_encr->key_len + salt_len);
540 pos += tr_encr->key_len + salt_len;
543 sa->sk_er = vec_new (u8, tr_encr->key_len + salt_len);
544 clib_memcpy_fast (sa->sk_er, keymat + pos, tr_encr->key_len + salt_len);
545 pos += tr_encr->key_len + salt_len;
548 sa->sk_pi = vec_new (u8, tr_prf->key_len);
549 clib_memcpy_fast (sa->sk_pi, keymat + pos, tr_prf->key_len);
550 pos += tr_prf->key_len;
553 sa->sk_pr = vec_new (u8, tr_prf->key_len);
554 clib_memcpy_fast (sa->sk_pr, keymat + pos, tr_prf->key_len);
555 pos += tr_prf->key_len;
558 sa->keys_generated = 1;
562 ikev2_calc_child_keys (ikev2_sa_t * sa, ikev2_child_sa_t * child)
565 u16 integ_key_len = 0;
568 ikev2_sa_transform_t *tr_prf, *ctr_encr, *ctr_integ;
570 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
572 ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR);
574 ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG);
577 integ_key_len = ctr_integ->key_len;
579 salt_len = sizeof (u32);
581 vec_append (s, sa->i_nonce);
582 vec_append (s, sa->r_nonce);
583 /* calculate PRFplus */
585 int len = ctr_encr->key_len * 2 + integ_key_len * 2 + salt_len * 2;
587 keymat = ikev2_calc_prfplus (tr_prf, sa->sk_d, s, len);
592 child->sk_ei = vec_new (u8, ctr_encr->key_len);
593 clib_memcpy_fast (child->sk_ei, keymat + pos, ctr_encr->key_len);
594 pos += ctr_encr->key_len;
599 child->sk_ai = vec_new (u8, ctr_integ->key_len);
600 clib_memcpy_fast (child->sk_ai, keymat + pos, ctr_integ->key_len);
601 pos += ctr_integ->key_len;
605 clib_memcpy (&child->salt_ei, keymat + pos, salt_len);
610 child->sk_er = vec_new (u8, ctr_encr->key_len);
611 clib_memcpy_fast (child->sk_er, keymat + pos, ctr_encr->key_len);
612 pos += ctr_encr->key_len;
617 child->sk_ar = vec_new (u8, integ_key_len);
618 clib_memcpy_fast (child->sk_ar, keymat + pos, integ_key_len);
619 pos += integ_key_len;
623 clib_memcpy (&child->salt_er, keymat + pos, salt_len);
632 static_always_inline u8 *
633 ikev2_compute_nat_sha1 (u64 ispi, u64 rspi, ip_address_t * ia, u16 port)
635 const u32 max_buf_size =
636 sizeof (ispi) + sizeof (rspi) + sizeof (ip6_address_t) + sizeof (u16);
637 u8 buf[max_buf_size];
638 u8 *res = vec_new (u8, 20);
640 clib_memcpy_fast (&buf[0], &ispi, sizeof (ispi));
641 clib_memcpy_fast (&buf[8], &rspi, sizeof (rspi));
642 clib_memcpy_fast (&buf[8 + 8], ip_addr_bytes (ia), ip_address_size (ia));
643 clib_memcpy_fast (&buf[8 + 8 + ip_address_size (ia)], &port, sizeof (port));
644 SHA1 (buf, 2 * sizeof (ispi) + sizeof (port) + ip_address_size (ia), res);
649 ikev2_parse_ke_payload (const void *p, u32 rlen, ikev2_sa_t * sa,
652 const ike_ke_payload_header_t *ke = p;
653 u16 plen = clib_net_to_host_u16 (ke->length);
654 ASSERT (plen >= sizeof (*ke) && plen <= rlen);
655 if (sizeof (*ke) > rlen)
658 sa->dh_group = clib_net_to_host_u16 (ke->dh_group);
659 vec_reset_length (ke_data[0]);
660 vec_add (ke_data[0], ke->payload, plen - sizeof (*ke));
665 ikev2_parse_nonce_payload (const void *p, u32 rlen, u8 * nonce)
667 const ike_payload_header_t *ikep = p;
668 u16 plen = clib_net_to_host_u16 (ikep->length);
669 ASSERT (plen >= sizeof (*ikep) && plen <= rlen);
670 clib_memcpy_fast (nonce, ikep->payload, plen - sizeof (*ikep));
675 ikev2_check_payload_length (const ike_payload_header_t * ikep, int rlen,
678 if (sizeof (*ikep) > rlen)
680 *plen = clib_net_to_host_u16 (ikep->length);
681 if (*plen < sizeof (*ikep) || *plen > rlen)
687 ikev2_process_sa_init_req (vlib_main_t * vm,
688 ikev2_sa_t * sa, ike_header_t * ike,
689 udp_header_t * udp, u32 len)
691 u8 nonce[IKEV2_NONCE_SIZE];
693 u8 payload = ike->nextpayload;
694 ike_payload_header_t *ikep;
697 ikev2_elog_exchange ("ispi %lx rspi %lx IKE_INIT request received "
698 "from ", clib_net_to_host_u64 (ike->ispi),
699 clib_net_to_host_u64 (ike->rspi),
700 ip_addr_v4 (&sa->iaddr).as_u32,
701 ip_addr_version (&sa->iaddr) == AF_IP4);
703 sa->ispi = clib_net_to_host_u64 (ike->ispi);
705 /* store whole IKE payload - needed for PSK auth */
706 vec_reset_length (sa->last_sa_init_req_packet_data);
707 vec_add (sa->last_sa_init_req_packet_data, ike, len);
709 if (len < sizeof (*ike))
712 len -= sizeof (*ike);
713 while (p < len && payload != IKEV2_PAYLOAD_NONE)
715 ikep = (ike_payload_header_t *) & ike->payload[p];
716 int current_length = len - p;
717 if (!ikev2_check_payload_length (ikep, current_length, &plen))
720 if (payload == IKEV2_PAYLOAD_SA)
722 ikev2_sa_free_proposal_vector (&sa->i_proposals);
723 sa->i_proposals = ikev2_parse_sa_payload (ikep, current_length);
725 else if (payload == IKEV2_PAYLOAD_KE)
727 if (!ikev2_parse_ke_payload (ikep, current_length, sa,
731 else if (payload == IKEV2_PAYLOAD_NONCE)
733 vec_reset_length (sa->i_nonce);
734 if (ikev2_parse_nonce_payload (ikep, current_length, nonce))
735 vec_add (sa->i_nonce, nonce, plen - sizeof (*ikep));
737 else if (payload == IKEV2_PAYLOAD_NOTIFY)
740 ikev2_parse_notify_payload (ikep, current_length);
741 if (n->msg_type == IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP)
743 u8 *src_sha = ikev2_compute_nat_sha1 (ike->ispi, 0, &sa->iaddr,
745 if (clib_memcmp (src_sha, n->data, vec_len (src_sha)))
748 ikev2_elog_uint (IKEV2_LOG_DEBUG, "ispi %lx initiator"
749 " behind NAT", sa->ispi);
753 else if (n->msg_type ==
754 IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP)
756 u8 *dst_sha = ikev2_compute_nat_sha1 (ike->ispi, 0, &sa->raddr,
758 if (clib_memcmp (dst_sha, n->data, vec_len (dst_sha)))
761 ikev2_elog_uint (IKEV2_LOG_DEBUG, "ispi %lx responder"
762 " (self) behind NAT", sa->ispi);
768 else if (payload == IKEV2_PAYLOAD_VENDOR)
770 ikev2_parse_vendor_payload (ikep);
774 ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
776 if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
778 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
779 sa->unsupported_cp = payload;
784 payload = ikep->nextpayload;
788 ikev2_set_state (sa, IKEV2_STATE_SA_INIT);
793 ikev2_process_sa_init_resp (vlib_main_t * vm,
794 ikev2_sa_t * sa, ike_header_t * ike,
795 udp_header_t * udp, u32 len)
797 u8 nonce[IKEV2_NONCE_SIZE];
799 u8 payload = ike->nextpayload;
800 ike_payload_header_t *ikep;
803 sa->ispi = clib_net_to_host_u64 (ike->ispi);
804 sa->rspi = clib_net_to_host_u64 (ike->rspi);
806 ikev2_elog_exchange ("ispi %lx rspi %lx IKE_INIT response received "
807 "from ", sa->ispi, sa->rspi,
808 ip_addr_v4 (&sa->raddr).as_u32,
809 ip_addr_version (&sa->raddr) == AF_IP4);
811 /* store whole IKE payload - needed for PSK auth */
812 vec_reset_length (sa->last_sa_init_res_packet_data);
813 vec_add (sa->last_sa_init_res_packet_data, ike, len);
815 if (sizeof (*ike) > len)
818 len -= sizeof (*ike);
819 while (p < len && payload != IKEV2_PAYLOAD_NONE)
821 int current_length = len - p;
822 ikep = (ike_payload_header_t *) & ike->payload[p];
823 if (!ikev2_check_payload_length (ikep, current_length, &plen))
826 if (payload == IKEV2_PAYLOAD_SA)
828 ikev2_sa_free_proposal_vector (&sa->r_proposals);
829 sa->r_proposals = ikev2_parse_sa_payload (ikep, current_length);
832 ikev2_set_state (sa, IKEV2_STATE_SA_INIT);
834 clib_host_to_net_u32 (clib_net_to_host_u32 (ike->msgid) + 1);
837 else if (payload == IKEV2_PAYLOAD_KE)
839 if (!ikev2_parse_ke_payload (ikep, current_length, sa,
843 else if (payload == IKEV2_PAYLOAD_NONCE)
845 vec_reset_length (sa->r_nonce);
846 if (ikev2_parse_nonce_payload (ikep, current_length, nonce))
847 vec_add (sa->r_nonce, nonce, plen - sizeof (*ikep));
849 else if (payload == IKEV2_PAYLOAD_NOTIFY)
852 ikev2_parse_notify_payload (ikep, current_length);
853 if (n->msg_type == IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP)
855 u8 *src_sha = ikev2_compute_nat_sha1 (ike->ispi, ike->rspi,
858 if (clib_memcmp (src_sha, n->data, vec_len (src_sha)))
860 ikev2_elog_uint (IKEV2_LOG_DEBUG, "ispi %lx responder"
861 " behind NAT, unsupported", sa->ispi);
865 else if (n->msg_type ==
866 IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP)
868 u8 *dst_sha = ikev2_compute_nat_sha1 (ike->ispi, ike->rspi,
871 if (clib_memcmp (dst_sha, n->data, vec_len (dst_sha)))
874 ikev2_elog_uint (IKEV2_LOG_DEBUG, "ispi %lx initiator"
875 " (self) behind NAT", sa->ispi);
881 else if (payload == IKEV2_PAYLOAD_VENDOR)
883 ikev2_parse_vendor_payload (ikep);
887 ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
889 if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
891 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
892 sa->unsupported_cp = payload;
897 payload = ikep->nextpayload;
903 ikev2_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike,
904 u8 * payload, u32 rlen, u32 * out_len)
906 ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
908 u8 last_payload = 0, *hmac = 0, *plaintext = 0;
909 ike_payload_header_t *ikep = 0;
912 ikev2_sa_transform_t *tr_integ;
913 ikev2_sa_transform_t *tr_encr;
915 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG);
917 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR);
918 int is_aead = tr_encr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_GCM_16;
920 if (((!sa->sk_ar || !sa->sk_ai) && !is_aead) || (!sa->sk_ei || !sa->sk_er))
923 if (rlen <= sizeof (*ike))
926 int len = rlen - sizeof (*ike);
928 *payload != IKEV2_PAYLOAD_NONE && last_payload != IKEV2_PAYLOAD_SK)
930 ikep = (ike_payload_header_t *) & ike->payload[p];
931 int current_length = len - p;
932 if (!ikev2_check_payload_length (ikep, current_length, &plen))
935 if (*payload == IKEV2_PAYLOAD_SK)
937 last_payload = *payload;
941 ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
943 if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
945 sa->unsupported_cp = *payload;
950 *payload = ikep->nextpayload;
954 if (last_payload != IKEV2_PAYLOAD_SK)
956 ikev2_elog_error ("Last payload must be SK");
962 if (plen < sizeof (*ikep) + IKEV2_GCM_ICV_SIZE)
965 plen -= sizeof (*ikep) + IKEV2_GCM_ICV_SIZE;
966 u8 *aad = (u8 *) ike;
967 u32 aad_len = ikep->payload - aad;
968 u8 *tag = ikep->payload + plen;
970 int rc = ikev2_decrypt_aead_data (ptd, sa, tr_encr, ikep->payload,
971 plen, aad, aad_len, tag, &dlen);
975 plaintext = ikep->payload + IKEV2_GCM_IV_SIZE;
980 if (rlen < tr_integ->key_trunc)
984 ikev2_calc_integr (tr_integ, sa->is_initiator ? sa->sk_ar : sa->sk_ai,
985 (u8 *) ike, rlen - tr_integ->key_trunc);
987 if (plen < sizeof (*ikep) + tr_integ->key_trunc)
990 plen = plen - sizeof (*ikep) - tr_integ->key_trunc;
992 if (clib_memcmp (hmac, &ikep->payload[plen], tr_integ->key_trunc))
994 ikev2_elog_error ("message integrity check failed");
1000 int rc = ikev2_decrypt_data (ptd, sa, tr_encr, ikep->payload, plen,
1005 plaintext = ikep->payload + tr_encr->block_size;
1012 static_always_inline int
1013 ikev2_is_id_equal (ikev2_id_t * i1, ikev2_id_t * i2)
1015 if (i1->type != i2->type)
1018 if (vec_len (i1->data) != vec_len (i2->data))
1021 if (clib_memcmp (i1->data, i2->data, vec_len (i1->data)))
1028 ikev2_initial_contact_cleanup_internal (ikev2_main_per_thread_data_t * ptd,
1031 ikev2_main_t *km = &ikev2_main;
1034 ikev2_child_sa_t *c;
1036 /* find old IKE SAs with the same authenticated identity */
1038 pool_foreach (tmp, ptd->sas, ({
1039 if (!ikev2_is_id_equal (&tmp->i_id, &sa->i_id)
1040 || !ikev2_is_id_equal(&tmp->r_id, &sa->r_id))
1043 if (sa->rspi != tmp->rspi)
1044 vec_add1(delete, tmp - ptd->sas);
1048 for (i = 0; i < vec_len (delete); i++)
1050 tmp = pool_elt_at_index (ptd->sas, delete[i]);
1051 vec_foreach (c, tmp->childs)
1053 ikev2_delete_tunnel_interface (km->vnet_main, tmp, c);
1055 ikev2_delete_sa (ptd, tmp);
1059 sa->initial_contact = 0;
1063 ikev2_initial_contact_cleanup (ikev2_main_per_thread_data_t * ptd,
1066 ikev2_main_t *km = &ikev2_main;
1068 if (!sa->initial_contact)
1073 ikev2_initial_contact_cleanup_internal (ptd, sa);
1077 vec_foreach (ptd, km->per_thread_data)
1078 ikev2_initial_contact_cleanup_internal (ptd, sa);
1080 sa->initial_contact = 0;
1084 ikev2_parse_id_payload (const void *p, u16 rlen, ikev2_id_t * sa_id)
1086 const ike_id_payload_header_t *id = p;
1087 u16 plen = clib_net_to_host_u16 (id->length);
1088 if (plen < sizeof (*id) || plen > rlen)
1091 sa_id->type = id->id_type;
1092 vec_reset_length (sa_id->data);
1093 vec_add (sa_id->data, id->payload, plen - sizeof (*id));
1099 ikev2_parse_auth_payload (const void *p, u32 rlen, ikev2_auth_t * a)
1101 const ike_auth_payload_header_t *ah = p;
1102 u16 plen = clib_net_to_host_u16 (ah->length);
1104 a->method = ah->auth_method;
1105 vec_reset_length (a->data);
1106 vec_add (a->data, ah->payload, plen - sizeof (*ah));
1111 ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa,
1112 ike_header_t * ike, u32 len)
1115 ikev2_child_sa_t *first_child_sa;
1116 u8 payload = ike->nextpayload;
1118 ike_payload_header_t *ikep;
1122 ikev2_elog_exchange ("ispi %lx rspi %lx EXCHANGE_IKE_AUTH received "
1123 "from ", clib_host_to_net_u64 (ike->ispi),
1124 clib_host_to_net_u64 (ike->rspi),
1126 ip_addr_v4 (&sa->raddr).as_u32 :
1127 ip_addr_v4 (&sa->iaddr).as_u32,
1128 ip_addr_version (&sa->raddr) == AF_IP4);
1130 ikev2_calc_keys (sa);
1132 plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload, len, &dlen);
1136 if (sa->unsupported_cp)
1138 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
1144 /* select or create 1st child SA */
1145 if (sa->is_initiator)
1147 first_child_sa = &sa->childs[0];
1151 ikev2_sa_free_all_child_sa (&sa->childs);
1152 vec_add2 (sa->childs, first_child_sa, 1);
1156 /* process encrypted payload */
1157 while (p < dlen && payload != IKEV2_PAYLOAD_NONE)
1159 ikep = (ike_payload_header_t *) & plaintext[p];
1160 int current_length = dlen - p;
1161 if (!ikev2_check_payload_length (ikep, current_length, &plen))
1164 if (payload == IKEV2_PAYLOAD_SA) /* 33 */
1166 if (sa->is_initiator)
1168 ikev2_sa_free_proposal_vector (&first_child_sa->r_proposals);
1169 first_child_sa->r_proposals = ikev2_parse_sa_payload (ikep,
1174 ikev2_sa_free_proposal_vector (&first_child_sa->i_proposals);
1175 first_child_sa->i_proposals = ikev2_parse_sa_payload (ikep,
1179 else if (payload == IKEV2_PAYLOAD_IDI) /* 35 */
1181 if (!ikev2_parse_id_payload (ikep, current_length, &sa->i_id))
1184 else if (payload == IKEV2_PAYLOAD_IDR) /* 36 */
1186 if (!ikev2_parse_id_payload (ikep, current_length, &sa->r_id))
1189 else if (payload == IKEV2_PAYLOAD_AUTH) /* 39 */
1191 if (sa->is_initiator)
1193 if (!ikev2_parse_auth_payload (ikep, current_length,
1199 if (!ikev2_parse_auth_payload (ikep, current_length,
1204 else if (payload == IKEV2_PAYLOAD_NOTIFY) /* 41 */
1207 ikev2_parse_notify_payload (ikep, current_length);
1208 if (n->msg_type == IKEV2_NOTIFY_MSG_INITIAL_CONTACT)
1210 sa->initial_contact = 1;
1214 else if (payload == IKEV2_PAYLOAD_VENDOR) /* 43 */
1216 ikev2_parse_vendor_payload (ikep);
1218 else if (payload == IKEV2_PAYLOAD_TSI) /* 44 */
1220 vec_free (first_child_sa->tsi);
1221 first_child_sa->tsi = ikev2_parse_ts_payload (ikep, current_length);
1223 else if (payload == IKEV2_PAYLOAD_TSR) /* 45 */
1225 vec_free (first_child_sa->tsr);
1226 first_child_sa->tsr = ikev2_parse_ts_payload (ikep, current_length);
1230 ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
1233 if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
1235 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
1236 sa->unsupported_cp = payload;
1241 payload = ikep->nextpayload;
1248 ikev2_set_state (sa, IKEV2_STATE_DELETED);
1253 ikev2_process_informational_req (vlib_main_t * vm,
1254 ikev2_sa_t * sa, ike_header_t * ike, u32 len)
1257 u8 payload = ike->nextpayload;
1259 ike_payload_header_t *ikep;
1261 ikev2_notify_t *n = 0;
1263 sa->liveness_retries = 0;
1264 ikev2_elog_exchange ("ispi %lx rspi %lx INFORMATIONAL received "
1265 "from ", clib_host_to_net_u64 (ike->ispi),
1266 clib_host_to_net_u64 (ike->rspi),
1267 ip_addr_v4 (&sa->iaddr).as_u32,
1268 ip_addr_version (&sa->iaddr) == AF_IP4);
1270 plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload, len, &dlen);
1275 /* process encrypted payload */
1277 while (p < dlen && payload != IKEV2_PAYLOAD_NONE)
1279 u32 current_length = dlen - p;
1280 if (p + sizeof (*ikep) > dlen)
1283 ikep = (ike_payload_header_t *) & plaintext[p];
1284 u16 plen = clib_net_to_host_u16 (ikep->length);
1286 if (plen < sizeof (*ikep) || plen > current_length)
1289 if (payload == IKEV2_PAYLOAD_NOTIFY) /* 41 */
1291 n = ikev2_parse_notify_payload (ikep, current_length);
1294 if (n->msg_type == IKEV2_NOTIFY_MSG_AUTHENTICATION_FAILED)
1295 ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
1298 else if (payload == IKEV2_PAYLOAD_DELETE) /* 42 */
1300 sa->del = ikev2_parse_delete_payload (ikep, current_length);
1302 else if (payload == IKEV2_PAYLOAD_VENDOR) /* 43 */
1304 ikev2_parse_vendor_payload (ikep);
1308 ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
1310 if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
1312 sa->unsupported_cp = payload;
1316 payload = ikep->nextpayload;
1323 ikev2_process_create_child_sa_req (vlib_main_t * vm,
1324 ikev2_sa_t * sa, ike_header_t * ike,
1328 u8 payload = ike->nextpayload;
1331 u8 nonce[IKEV2_NONCE_SIZE];
1333 ike_payload_header_t *ikep;
1334 ikev2_notify_t *n = 0;
1335 ikev2_ts_t *tsi = 0;
1336 ikev2_ts_t *tsr = 0;
1337 ikev2_sa_proposal_t *proposal = 0;
1338 ikev2_child_sa_t *child_sa;
1342 ikev2_elog_exchange ("ispi %lx rspi %lx CREATE_CHILD_SA received "
1343 "from ", clib_host_to_net_u64 (ike->ispi),
1344 clib_host_to_net_u64 (ike->rspi),
1345 ip_addr_v4 (&sa->raddr).as_u32,
1346 ip_addr_version (&sa->raddr) == AF_IP4);
1348 plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload, len, &dlen);
1351 goto cleanup_and_exit;
1353 /* process encrypted payload */
1355 while (payload != IKEV2_PAYLOAD_NONE)
1357 ikep = (ike_payload_header_t *) & plaintext[p];
1358 int current_length = dlen - p;
1359 if (!ikev2_check_payload_length (ikep, current_length, &plen))
1360 goto cleanup_and_exit;
1362 if (payload == IKEV2_PAYLOAD_SA)
1364 proposal = ikev2_parse_sa_payload (ikep, current_length);
1366 else if (payload == IKEV2_PAYLOAD_NOTIFY)
1368 n = ikev2_parse_notify_payload (ikep, current_length);
1369 if (n->msg_type == IKEV2_NOTIFY_MSG_REKEY_SA)
1374 else if (payload == IKEV2_PAYLOAD_DELETE)
1376 sa->del = ikev2_parse_delete_payload (ikep, current_length);
1378 else if (payload == IKEV2_PAYLOAD_VENDOR)
1380 ikev2_parse_vendor_payload (ikep);
1382 else if (payload == IKEV2_PAYLOAD_NONCE)
1384 ikev2_parse_nonce_payload (ikep, current_length, nonce);
1386 else if (payload == IKEV2_PAYLOAD_TSI)
1388 tsi = ikev2_parse_ts_payload (ikep, current_length);
1390 else if (payload == IKEV2_PAYLOAD_TSR)
1392 tsr = ikev2_parse_ts_payload (ikep, current_length);
1396 ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
1398 if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
1400 sa->unsupported_cp = payload;
1401 goto cleanup_and_exit;
1404 payload = ikep->nextpayload;
1408 if (sa->is_initiator && proposal->protocol_id == IKEV2_PROTOCOL_ESP)
1410 ikev2_rekey_t *rekey = &sa->rekey[0];
1411 rekey->protocol_id = proposal->protocol_id;
1413 ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
1414 rekey->i_proposal->spi = rekey->spi;
1415 rekey->r_proposal = proposal;
1419 vec_reset_length (sa->r_nonce);
1420 vec_add (sa->r_nonce, nonce, IKEV2_NONCE_SIZE);
1421 child_sa = ikev2_sa_get_child (sa, rekey->ispi, IKEV2_PROTOCOL_ESP, 1);
1424 child_sa->rekey_retries = 0;
1429 ikev2_rekey_t *rekey;
1430 child_sa = ikev2_sa_get_child (sa, n->spi, n->protocol_id, 1);
1433 ikev2_elog_uint (IKEV2_LOG_ERROR, "child SA spi %lx not found",
1435 goto cleanup_and_exit;
1437 vec_add2 (sa->rekey, rekey, 1);
1438 rekey->protocol_id = n->protocol_id;
1439 rekey->spi = n->spi;
1440 rekey->i_proposal = proposal;
1442 ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
1446 vec_reset_length (sa->i_nonce);
1447 vec_add (sa->i_nonce, nonce, IKEV2_NONCE_SIZE);
1448 /* generate new Nr */
1449 vec_validate (sa->r_nonce, IKEV2_NONCE_SIZE - 1);
1450 RAND_bytes ((u8 *) sa->r_nonce, IKEV2_NONCE_SIZE);
1453 goto cleanup_and_exit;
1459 vec_free (proposal);
1466 ikev2_sa_generate_authmsg (ikev2_sa_t * sa, int is_responder)
1474 ikev2_sa_transform_t *tr_prf;
1477 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
1483 nonce = sa->i_nonce;
1484 packet_data = sa->last_sa_init_res_packet_data;
1490 nonce = sa->r_nonce;
1491 packet_data = sa->last_sa_init_req_packet_data;
1494 data = vec_new (u8, 4);
1496 vec_append (data, id->data);
1498 u8 *id_hash = ikev2_calc_prf (tr_prf, key, data);
1499 vec_append (authmsg, packet_data);
1500 vec_append (authmsg, nonce);
1501 vec_append (authmsg, id_hash);
1509 ikev2_ts_cmp (ikev2_ts_t * ts1, ikev2_ts_t * ts2)
1511 if (ts1->ts_type == ts2->ts_type && ts1->protocol_id == ts2->protocol_id &&
1512 ts1->start_port == ts2->start_port && ts1->end_port == ts2->end_port &&
1513 !ip_address_cmp (&ts1->start_addr, &ts2->start_addr) &&
1514 !ip_address_cmp (&ts1->end_addr, &ts2->end_addr))
1521 ikev2_sa_match_ts (ikev2_sa_t * sa)
1523 ikev2_main_t *km = &ikev2_main;
1525 ikev2_ts_t *ts, *p_tsi, *p_tsr, *tsi = 0, *tsr = 0;
1526 ikev2_id_t *id_rem, *id_loc;
1529 pool_foreach (p, km->profiles, ({
1531 if (sa->is_initiator)
1547 if (!ikev2_is_id_equal (&p->rem_id, id_rem)
1548 || !ikev2_is_id_equal (&p->loc_id, id_loc))
1551 sa->profile_index = p - km->profiles;
1553 vec_foreach(ts, sa->childs[0].tsi)
1555 if (ikev2_ts_cmp(p_tsi, ts))
1557 vec_add1 (tsi, ts[0]);
1562 vec_foreach(ts, sa->childs[0].tsr)
1564 if (ikev2_ts_cmp(p_tsr, ts))
1566 vec_add1 (tsr, ts[0]);
1577 vec_free (sa->childs[0].tsi);
1578 vec_free (sa->childs[0].tsr);
1579 sa->childs[0].tsi = tsi;
1580 sa->childs[0].tsr = tsr;
1586 ikev2_set_state (sa, IKEV2_STATE_TS_UNACCEPTABLE);
1591 ikev2_sa_auth (ikev2_sa_t * sa)
1593 ikev2_main_t *km = &ikev2_main;
1594 ikev2_profile_t *p, *sel_p = 0;
1595 u8 *authmsg, *key_pad, *psk = 0, *auth = 0;
1596 ikev2_sa_transform_t *tr_prf;
1599 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
1601 /* only shared key and rsa signature */
1602 if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC ||
1603 sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG))
1605 ikev2_elog_uint (IKEV2_LOG_ERROR,
1606 "unsupported authentication method %u",
1608 ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
1612 key_pad = format (0, "%s", IKEV2_KEY_PAD);
1613 authmsg = ikev2_sa_generate_authmsg (sa, sa->is_initiator);
1615 ikev2_id_t *id_rem, *id_loc;
1616 ikev2_auth_t *sa_auth;
1618 if (sa->is_initiator)
1622 sa_auth = &sa->r_auth;
1628 sa_auth = &sa->i_auth;
1632 pool_foreach (p, km->profiles, ({
1635 if (!ikev2_is_id_equal (&p->rem_id, id_rem)
1636 || !ikev2_is_id_equal (&p->loc_id, id_loc))
1639 if (sa_auth->method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
1641 if (!p->auth.data ||
1642 p->auth.method != IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
1645 psk = ikev2_calc_prf(tr_prf, p->auth.data, key_pad);
1646 auth = ikev2_calc_prf(tr_prf, psk, authmsg);
1648 if (!clib_memcmp(auth, sa_auth->data, vec_len(sa_auth->data)))
1650 ikev2_set_state(sa, IKEV2_STATE_AUTHENTICATED);
1657 else if (sa_auth->method == IKEV2_AUTH_METHOD_RSA_SIG)
1659 if (p->auth.method != IKEV2_AUTH_METHOD_RSA_SIG)
1662 if (ikev2_verify_sign(p->auth.key, sa_auth->data, authmsg) == 1)
1664 ikev2_set_state(sa, IKEV2_STATE_AUTHENTICATED);
1677 sa->udp_encap = sel_p->udp_encap;
1678 sa->ipsec_over_udp_port = sel_p->ipsec_over_udp_port;
1682 if (sa->state == IKEV2_STATE_AUTHENTICATED)
1684 if (!sa->is_initiator)
1686 vec_free (sa->r_id.data);
1687 sa->r_id.data = vec_dup (sel_p->loc_id.data);
1688 sa->r_id.type = sel_p->loc_id.type;
1689 sa->i_id.data = vec_dup (sel_p->rem_id.data);
1690 sa->i_id.type = sel_p->rem_id.type;
1692 /* generate our auth data */
1693 authmsg = ikev2_sa_generate_authmsg (sa, 1);
1694 if (sel_p->auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
1696 vec_free (sa->r_auth.data);
1697 sa->r_auth.data = ikev2_calc_prf (tr_prf, psk, authmsg);
1698 sa->r_auth.method = IKEV2_AUTH_METHOD_SHARED_KEY_MIC;
1700 else if (sel_p->auth.method == IKEV2_AUTH_METHOD_RSA_SIG)
1702 vec_free (sa->r_auth.data);
1703 sa->r_auth.data = ikev2_calc_sign (km->pkey, authmsg);
1704 sa->r_auth.method = IKEV2_AUTH_METHOD_RSA_SIG;
1708 /* select transforms for 1st child sa */
1709 ikev2_sa_free_proposal_vector (&sa->childs[0].r_proposals);
1710 sa->childs[0].r_proposals =
1711 ikev2_select_proposal (sa->childs[0].i_proposals,
1712 IKEV2_PROTOCOL_ESP);
1714 if (~0 != sel_p->tun_itf)
1716 sa->is_tun_itf_set = 1;
1717 sa->tun_itf = sel_p->tun_itf;
1723 ikev2_elog_uint (IKEV2_LOG_ERROR, "authentication failed, no matching "
1724 "profile found! ispi %lx", sa->ispi);
1725 ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
1733 ikev2_sa_auth_init (ikev2_sa_t * sa)
1735 ikev2_main_t *km = &ikev2_main;
1736 u8 *authmsg, *key_pad, *psk = 0;
1737 ikev2_sa_transform_t *tr_prf;
1740 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
1742 /* only shared key and rsa signature */
1743 if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC ||
1744 sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG))
1746 ikev2_elog_uint (IKEV2_LOG_ERROR,
1747 "unsupported authentication method %u",
1749 ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
1753 key_pad = format (0, "%s", IKEV2_KEY_PAD);
1754 authmsg = ikev2_sa_generate_authmsg (sa, 0);
1755 psk = ikev2_calc_prf (tr_prf, sa->i_auth.data, key_pad);
1757 if (sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
1759 vec_free (sa->i_auth.data);
1760 sa->i_auth.data = ikev2_calc_prf (tr_prf, psk, authmsg);
1761 sa->i_auth.method = IKEV2_AUTH_METHOD_SHARED_KEY_MIC;
1763 else if (sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG)
1765 vec_free (sa->i_auth.data);
1766 sa->i_auth.data = ikev2_calc_sign (km->pkey, authmsg);
1767 sa->i_auth.method = IKEV2_AUTH_METHOD_RSA_SIG;
1776 ikev2_mk_local_sa_id (u32 sai, u32 ci, u32 ti)
1778 return (0x80000000 | (ti << 24) | (sai << 12) | ci);
1782 ikev2_mk_remote_sa_id (u32 sai, u32 ci, u32 ti)
1784 return (0xc0000000 | (ti << 24) | (sai << 12) | ci);
1794 ipsec_sa_flags_t flags;
1797 ipsec_crypto_alg_t encr_type;
1798 ipsec_integ_alg_t integ_type;
1799 ip46_address_t local_ip;
1800 ip46_address_t remote_ip;
1801 ipsec_key_t loc_ckey, rem_ckey, loc_ikey, rem_ikey;
1803 u32 old_remote_sa_id;
1804 u16 ipsec_over_udp_port;
1807 } ikev2_add_ipsec_tunnel_args_t;
1810 ikev2_add_tunnel_from_main (ikev2_add_ipsec_tunnel_args_t * a)
1812 ikev2_main_t *km = &ikev2_main;
1815 ip46_address_t zero_addr = ip46_address_initializer;
1817 if (~0 == a->sw_if_index)
1819 /* no tunnel associated with the SA/profile - create a new one */
1820 rv = ipip_add_tunnel (IPIP_TRANSPORT_IP4, ~0,
1821 &a->local_ip, &a->remote_ip, 0,
1822 TUNNEL_ENCAP_DECAP_FLAG_NONE, IP_DSCP_CS0,
1823 TUNNEL_MODE_P2P, &sw_if_index);
1825 if (rv == VNET_API_ERROR_IF_ALREADY_EXISTS)
1827 if (hash_get (km->sw_if_indices, sw_if_index))
1828 /* interface is managed by IKE; proceed with updating SAs */
1831 hash_set1 (km->sw_if_indices, sw_if_index);
1835 sw_if_index = a->sw_if_index;
1836 vnet_sw_interface_admin_up (vnet_get_main (), sw_if_index);
1841 ikev2_elog_uint (IKEV2_LOG_ERROR,
1842 "installing ipip tunnel failed! local spi: %x",
1848 vec_add1 (sas_in, a->remote_sa_id);
1851 ipsec_tun_protect_del (sw_if_index, NULL);
1853 /* replace local SA immediately */
1854 ipsec_sa_unlock_id (a->local_sa_id);
1856 /* keep the old sa */
1857 vec_add1 (sas_in, a->old_remote_sa_id);
1860 rv |= ipsec_sa_add_and_lock (a->local_sa_id,
1862 IPSEC_PROTOCOL_ESP, a->encr_type,
1863 &a->loc_ckey, a->integ_type, &a->loc_ikey,
1864 a->flags, 0, a->salt_local, &zero_addr,
1865 &zero_addr, NULL, a->src_port, a->dst_port);
1866 rv |= ipsec_sa_add_and_lock (a->remote_sa_id, a->remote_spi,
1867 IPSEC_PROTOCOL_ESP, a->encr_type, &a->rem_ckey,
1868 a->integ_type, &a->rem_ikey,
1869 (a->flags | IPSEC_SA_FLAG_IS_INBOUND), 0,
1870 a->salt_remote, &zero_addr,
1871 &zero_addr, NULL, a->ipsec_over_udp_port,
1872 a->ipsec_over_udp_port);
1874 rv |= ipsec_tun_protect_update (sw_if_index, NULL, a->local_sa_id, sas_in);
1878 ikev2_create_tunnel_interface (vlib_main_t * vm,
1880 ikev2_child_sa_t * child, u32 sa_index,
1881 u32 child_index, u8 is_rekey)
1883 u32 thread_index = vlib_get_thread_index ();
1884 ikev2_main_t *km = &ikev2_main;
1885 ipsec_crypto_alg_t encr_type;
1886 ipsec_integ_alg_t integ_type;
1887 ikev2_profile_t *p = 0;
1888 ikev2_sa_transform_t *tr;
1889 ikev2_sa_proposal_t *proposals;
1891 ikev2_add_ipsec_tunnel_args_t a;
1893 clib_memset (&a, 0, sizeof (a));
1895 if (!child->r_proposals)
1897 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
1901 if (sa->is_initiator)
1903 ip_address_to_46 (&sa->iaddr, &a.local_ip);
1904 ip_address_to_46 (&sa->raddr, &a.remote_ip);
1905 proposals = child->r_proposals;
1906 a.local_spi = child->r_proposals[0].spi;
1907 a.remote_spi = child->i_proposals[0].spi;
1911 ip_address_to_46 (&sa->raddr, &a.local_ip);
1912 ip_address_to_46 (&sa->iaddr, &a.remote_ip);
1913 proposals = child->i_proposals;
1914 a.local_spi = child->i_proposals[0].spi;
1915 a.remote_spi = child->r_proposals[0].spi;
1918 a.flags = IPSEC_SA_FLAG_USE_ANTI_REPLAY;
1921 a.flags |= IPSEC_SA_FLAG_IS_TUNNEL;
1922 a.flags |= IPSEC_SA_FLAG_UDP_ENCAP;
1925 a.flags |= IPSEC_SA_FLAG_UDP_ENCAP;
1926 a.is_rekey = is_rekey;
1928 tr = ikev2_sa_get_td_for_type (proposals, IKEV2_TRANSFORM_TYPE_ESN);
1929 if (tr && tr->esn_type)
1930 a.flags |= IPSEC_SA_FLAG_USE_ESN;
1932 tr = ikev2_sa_get_td_for_type (proposals, IKEV2_TRANSFORM_TYPE_ENCR);
1935 if (tr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC && tr->key_len)
1937 switch (tr->key_len)
1940 encr_type = IPSEC_CRYPTO_ALG_AES_CBC_128;
1943 encr_type = IPSEC_CRYPTO_ALG_AES_CBC_192;
1946 encr_type = IPSEC_CRYPTO_ALG_AES_CBC_256;
1949 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
1954 else if (tr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_GCM_16
1957 switch (tr->key_len)
1960 encr_type = IPSEC_CRYPTO_ALG_AES_GCM_128;
1963 encr_type = IPSEC_CRYPTO_ALG_AES_GCM_192;
1966 encr_type = IPSEC_CRYPTO_ALG_AES_GCM_256;
1969 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
1977 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
1983 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
1986 a.encr_type = encr_type;
1990 tr = ikev2_sa_get_td_for_type (proposals, IKEV2_TRANSFORM_TYPE_INTEG);
1993 switch (tr->integ_type)
1995 case IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA2_256_128:
1996 integ_type = IPSEC_INTEG_ALG_SHA_256_128;
1998 case IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA2_384_192:
1999 integ_type = IPSEC_INTEG_ALG_SHA_384_192;
2001 case IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA2_512_256:
2002 integ_type = IPSEC_INTEG_ALG_SHA_512_256;
2004 case IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA1_96:
2005 integ_type = IPSEC_INTEG_ALG_SHA1_96;
2008 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
2014 ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
2020 integ_type = IPSEC_INTEG_ALG_NONE;
2023 a.integ_type = integ_type;
2024 ikev2_calc_child_keys (sa, child);
2026 if (sa->is_initiator)
2028 ipsec_mk_key (&a.loc_ikey, child->sk_ai, vec_len (child->sk_ai));
2029 ipsec_mk_key (&a.rem_ikey, child->sk_ar, vec_len (child->sk_ar));
2030 ipsec_mk_key (&a.loc_ckey, child->sk_ei, vec_len (child->sk_ei));
2031 ipsec_mk_key (&a.rem_ckey, child->sk_er, vec_len (child->sk_er));
2034 a.salt_remote = child->salt_er;
2035 a.salt_local = child->salt_ei;
2037 a.dst_port = a.src_port = sa->ipsec_over_udp_port;
2041 ipsec_mk_key (&a.loc_ikey, child->sk_ar, vec_len (child->sk_ar));
2042 ipsec_mk_key (&a.rem_ikey, child->sk_ai, vec_len (child->sk_ai));
2043 ipsec_mk_key (&a.loc_ckey, child->sk_er, vec_len (child->sk_er));
2044 ipsec_mk_key (&a.rem_ckey, child->sk_ei, vec_len (child->sk_ei));
2047 a.salt_remote = child->salt_ei;
2048 a.salt_local = child->salt_er;
2050 a.dst_port = sa->natt ? sa->dst_port : sa->ipsec_over_udp_port;
2051 a.src_port = sa->ipsec_over_udp_port;
2054 if (sa->is_initiator && sa->profile_index != ~0)
2055 p = pool_elt_at_index (km->profiles, sa->profile_index);
2057 if (p && p->lifetime)
2059 child->time_to_expiration = vlib_time_now (vm) + p->lifetime;
2060 if (p->lifetime_jitter)
2062 // This is not much better than rand(3), which Coverity warns
2063 // is unsuitable for security applications; random_u32 is
2064 // however fast. If this perturbance to the expiration time
2065 // needs to use a better RNG then we may need to use something
2066 // like /dev/urandom which has significant overhead.
2067 u32 rnd = (u32) (vlib_time_now (vm) * 1e6);
2068 rnd = random_u32 (&rnd);
2070 child->time_to_expiration += 1 + (rnd % p->lifetime_jitter);
2074 if (thread_index & 0xffffffc0)
2075 ikev2_elog_error ("error: thread index exceeds max range 0x3f!");
2077 if (child_index & 0xfffff000 || sa_index & 0xfffff000)
2078 ikev2_elog_error ("error: sa/child index exceeds max range 0xfff!");
2080 child->local_sa_id =
2082 ikev2_mk_local_sa_id (sa_index, child_index, thread_index);
2084 u32 remote_sa_id = ikev2_mk_remote_sa_id (sa_index, child_index,
2089 /* create a new remote SA ID to keep the old SA for a bit longer
2090 * so the peer has some time to swap their SAs */
2092 /* use most significat bit of child index part in id */
2094 if (sa->current_remote_id_mask)
2096 sa->old_remote_id = a.old_remote_sa_id = remote_sa_id | mask;
2097 sa->current_remote_id_mask = 0;
2101 sa->old_remote_id = a.old_remote_sa_id = remote_sa_id;
2102 sa->current_remote_id_mask = mask;
2103 remote_sa_id |= mask;
2105 sa->old_id_expiration = 3.0;
2106 sa->old_remote_id_present = 1;
2109 child->remote_sa_id = a.remote_sa_id = remote_sa_id;
2111 a.sw_if_index = (sa->is_tun_itf_set ? sa->tun_itf : ~0);
2112 a.ipsec_over_udp_port = sa->ipsec_over_udp_port;
2114 vl_api_rpc_call_main_thread (ikev2_add_tunnel_from_main,
2115 (u8 *) & a, sizeof (a));
2121 ip46_address_t local_ip;
2122 ip46_address_t remote_ip;
2126 } ikev2_del_ipsec_tunnel_args_t;
2128 static_always_inline u32
2129 ikev2_flip_alternate_sa_bit (u32 id)
2138 ikev2_del_tunnel_from_main (ikev2_del_ipsec_tunnel_args_t * a)
2140 ikev2_main_t *km = &ikev2_main;
2141 ipip_tunnel_t *ipip = NULL;
2144 if (~0 == a->sw_if_index)
2147 ipip_tunnel_key_t key = {
2149 .dst = a->remote_ip,
2150 .transport = IPIP_TRANSPORT_IP4,
2155 ipip = ipip_tunnel_db_find (&key);
2159 sw_if_index = ipip->sw_if_index;
2160 hash_unset (km->sw_if_indices, ipip->sw_if_index);
2167 sw_if_index = a->sw_if_index;
2168 vnet_sw_interface_admin_down (vnet_get_main (), sw_if_index);
2171 if (~0 != sw_if_index)
2172 ipsec_tun_protect_del (sw_if_index, NULL);
2174 ipsec_sa_unlock_id (a->remote_sa_id);
2175 ipsec_sa_unlock_id (a->local_sa_id);
2176 ipsec_sa_unlock_id (ikev2_flip_alternate_sa_bit (a->remote_sa_id));
2179 ipip_del_tunnel (ipip->sw_if_index);
2183 ikev2_delete_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa,
2184 ikev2_child_sa_t * child)
2186 ikev2_del_ipsec_tunnel_args_t a;
2188 clib_memset (&a, 0, sizeof (a));
2190 if (sa->is_initiator)
2192 ip_address_to_46 (&sa->iaddr, &a.local_ip);
2193 ip_address_to_46 (&sa->raddr, &a.remote_ip);
2197 ip_address_to_46 (&sa->raddr, &a.local_ip);
2198 ip_address_to_46 (&sa->iaddr, &a.remote_ip);
2201 a.remote_sa_id = child->remote_sa_id;
2202 a.local_sa_id = child->local_sa_id;
2203 a.sw_if_index = (sa->is_tun_itf_set ? sa->tun_itf : ~0);
2205 vl_api_rpc_call_main_thread (ikev2_del_tunnel_from_main, (u8 *) & a,
2211 ikev2_generate_message (vlib_buffer_t * b, ikev2_sa_t * sa,
2212 ike_header_t * ike, void *user, udp_header_t * udp)
2214 ikev2_main_t *km = &ikev2_main;
2215 u16 buffer_data_size = vlib_buffer_get_default_data_size (km->vlib_main);
2217 ike_payload_header_t *ph;
2221 ikev2_sa_transform_t *tr_encr, *tr_integ;
2223 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR);
2225 ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG);
2227 ikev2_payload_chain_t *chain = 0;
2228 ikev2_payload_new_chain (chain);
2230 if (ike->exchange == IKEV2_EXCHANGE_SA_INIT)
2232 if (sa->r_proposals == 0)
2234 ikev2_payload_add_notify (chain,
2235 IKEV2_NOTIFY_MSG_NO_PROPOSAL_CHOSEN, 0);
2236 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
2238 else if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE)
2240 u8 *data = vec_new (u8, 2);
2241 ikev2_sa_transform_t *tr_dh;
2243 ikev2_sa_get_td_for_type (sa->r_proposals,
2244 IKEV2_TRANSFORM_TYPE_DH);
2245 ASSERT (tr_dh && tr_dh->dh_type);
2247 data[0] = (tr_dh->dh_type >> 8) & 0xff;
2248 data[1] = (tr_dh->dh_type) & 0xff;
2250 ikev2_payload_add_notify (chain,
2251 IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD,
2254 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
2256 else if (sa->state == IKEV2_STATE_NOTIFY_AND_DELETE)
2258 u8 *data = vec_new (u8, 1);
2260 data[0] = sa->unsupported_cp;
2261 ikev2_payload_add_notify (chain,
2262 IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD,
2270 ike->rspi = clib_host_to_net_u64 (sa->rspi);
2271 ikev2_payload_add_sa (chain, sa->r_proposals);
2272 ikev2_payload_add_ke (chain, sa->dh_group, sa->r_dh_data);
2273 ikev2_payload_add_nonce (chain, sa->r_nonce);
2275 u8 *nat_detection_sha1 =
2276 ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa->ispi),
2277 clib_host_to_net_u64 (sa->rspi),
2278 &sa->raddr, udp->dst_port);
2279 ikev2_payload_add_notify (chain,
2280 IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP,
2281 nat_detection_sha1);
2282 vec_free (nat_detection_sha1);
2283 nat_detection_sha1 =
2284 ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa->ispi),
2285 clib_host_to_net_u64 (sa->rspi),
2286 &sa->iaddr, udp->src_port);
2287 ikev2_payload_add_notify (chain,
2288 IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP,
2289 nat_detection_sha1);
2290 vec_free (nat_detection_sha1);
2293 else if (ike->exchange == IKEV2_EXCHANGE_IKE_AUTH)
2295 if (sa->state == IKEV2_STATE_AUTHENTICATED)
2297 ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
2298 ikev2_payload_add_id (chain, &sa->i_id, IKEV2_PAYLOAD_IDI);
2299 ikev2_payload_add_auth (chain, &sa->r_auth);
2300 ikev2_payload_add_sa (chain, sa->childs[0].r_proposals);
2301 ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
2302 ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR);
2304 else if (sa->state == IKEV2_STATE_AUTH_FAILED)
2306 ikev2_payload_add_notify (chain,
2307 IKEV2_NOTIFY_MSG_AUTHENTICATION_FAILED,
2309 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
2311 else if (sa->state == IKEV2_STATE_TS_UNACCEPTABLE)
2313 ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_TS_UNACCEPTABLE,
2315 ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
2316 ikev2_payload_add_auth (chain, &sa->r_auth);
2318 else if (sa->state == IKEV2_STATE_NO_PROPOSAL_CHOSEN)
2320 ikev2_payload_add_notify (chain,
2321 IKEV2_NOTIFY_MSG_NO_PROPOSAL_CHOSEN, 0);
2322 ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
2323 ikev2_payload_add_auth (chain, &sa->r_auth);
2324 ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
2325 ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR);
2327 else if (sa->state == IKEV2_STATE_NOTIFY_AND_DELETE)
2329 u8 *data = vec_new (u8, 1);
2331 data[0] = sa->unsupported_cp;
2332 ikev2_payload_add_notify (chain,
2333 IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD,
2337 else if (sa->state == IKEV2_STATE_SA_INIT)
2339 ikev2_payload_add_id (chain, &sa->i_id, IKEV2_PAYLOAD_IDI);
2340 ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
2341 ikev2_payload_add_auth (chain, &sa->i_auth);
2342 ikev2_payload_add_sa (chain, sa->childs[0].i_proposals);
2343 ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
2344 ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR);
2345 ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_INITIAL_CONTACT,
2350 ikev2_set_state (sa, IKEV2_STATE_DELETED);
2354 else if (ike->exchange == IKEV2_EXCHANGE_INFORMATIONAL)
2356 /* if pending delete */
2359 if (sa->del[0].protocol_id == IKEV2_PROTOCOL_IKE)
2361 if (ike_hdr_is_request (ike))
2362 ikev2_payload_add_delete (chain, sa->del);
2364 /* The response to a request that deletes the IKE SA is an empty
2365 INFORMATIONAL response. */
2366 ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
2368 /* The response to a request that deletes ESP or AH SAs will contain
2369 delete payloads for the paired SAs going in the other direction. */
2372 ikev2_payload_add_delete (chain, sa->del);
2377 /* received N(AUTHENTICATION_FAILED) */
2378 else if (sa->state == IKEV2_STATE_AUTH_FAILED)
2380 ikev2_set_state (sa, IKEV2_STATE_DELETED);
2383 /* received unsupported critical payload */
2384 else if (sa->unsupported_cp)
2386 u8 *data = vec_new (u8, 1);
2388 data[0] = sa->unsupported_cp;
2389 ikev2_payload_add_notify (chain,
2390 IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD,
2393 sa->unsupported_cp = 0;
2395 /* else send empty response */
2397 else if (ike->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA)
2399 if (sa->is_initiator)
2402 ikev2_sa_proposal_t *proposals = (ikev2_sa_proposal_t *) user;
2403 ikev2_notify_t notify;
2404 u8 *data = vec_new (u8, 4);
2405 clib_memset (¬ify, 0, sizeof (notify));
2406 notify.protocol_id = IKEV2_PROTOCOL_ESP;
2407 notify.spi = sa->childs[0].i_proposals->spi;
2408 *(u32 *) data = clib_host_to_net_u32 (notify.spi);
2410 ikev2_payload_add_sa (chain, proposals);
2411 ikev2_payload_add_nonce (chain, sa->i_nonce);
2412 ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
2413 ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR);
2414 ikev2_payload_add_notify_2 (chain, IKEV2_NOTIFY_MSG_REKEY_SA, data,
2421 if (vec_len (sa->rekey) > 0)
2423 ikev2_payload_add_sa (chain, sa->rekey[0].r_proposal);
2424 ikev2_payload_add_nonce (chain, sa->r_nonce);
2425 ikev2_payload_add_ts (chain, sa->rekey[0].tsi,
2427 ikev2_payload_add_ts (chain, sa->rekey[0].tsr,
2429 vec_del1 (sa->rekey, 0);
2431 else if (sa->unsupported_cp)
2433 u8 *data = vec_new (u8, 1);
2435 data[0] = sa->unsupported_cp;
2436 ikev2_payload_add_notify (chain,
2437 IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD,
2440 sa->unsupported_cp = 0;
2444 ikev2_payload_add_notify (chain,
2445 IKEV2_NOTIFY_MSG_NO_ADDITIONAL_SAS,
2452 ike->version = IKE_VERSION_2;
2453 ike->nextpayload = IKEV2_PAYLOAD_SK;
2454 tlen = sizeof (*ike);
2456 if (sa->is_initiator)
2457 ike->flags |= IKEV2_HDR_FLAG_INITIATOR;
2459 if (ike_hdr_is_request (ike))
2461 sa->last_init_msg_id = clib_net_to_host_u32 (ike->msgid);
2464 if (ike->exchange == IKEV2_EXCHANGE_SA_INIT)
2466 tlen += vec_len (chain->data);
2467 ike->nextpayload = chain->first_payload_type;
2468 ike->length = clib_host_to_net_u32 (tlen);
2470 if (tlen + b->current_length + b->current_data > buffer_data_size)
2476 clib_memcpy_fast (ike->payload, chain->data, vec_len (chain->data));
2478 /* store whole IKE payload - needed for PSK auth */
2479 vec_reset_length (sa->last_sa_init_res_packet_data);
2480 vec_add (sa->last_sa_init_res_packet_data, ike, tlen);
2484 ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
2485 ikev2_payload_chain_add_padding (chain, tr_encr->block_size);
2488 plen = sizeof (*ph);
2489 ph = (ike_payload_header_t *) & ike->payload[0];
2490 ph->nextpayload = chain->first_payload_type;
2493 tr_encr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_GCM_16;
2494 int iv_len = is_aead ? IKEV2_GCM_IV_SIZE : tr_encr->block_size;
2495 plen += vec_len (chain->data) + iv_len;
2497 /* add space for hmac/tag */
2499 plen += tr_integ->key_trunc;
2501 plen += IKEV2_GCM_ICV_SIZE;
2504 if (tlen + b->current_length + b->current_data > buffer_data_size)
2510 /* payload and total length */
2511 ph->length = clib_host_to_net_u16 (plen);
2512 ike->length = clib_host_to_net_u32 (tlen);
2516 if (!ikev2_encrypt_aead_data (ptd, sa, tr_encr, chain->data,
2517 ph->payload, (u8 *) ike,
2518 sizeof (*ike) + sizeof (*ph),
2519 ph->payload + plen - sizeof (*ph) -
2520 IKEV2_GCM_ICV_SIZE))
2528 if (!ikev2_encrypt_data
2529 (ptd, sa, tr_encr, chain->data, ph->payload))
2535 ikev2_calc_integr (tr_integ,
2536 sa->is_initiator ? sa->sk_ai : sa->sk_ar,
2537 (u8 *) ike, tlen - tr_integ->key_trunc);
2538 clib_memcpy_fast (ike->payload + tlen - tr_integ->key_trunc -
2539 sizeof (*ike), integ, tr_integ->key_trunc);
2542 /* store whole IKE payload - needed for retransmit */
2543 vec_reset_length (sa->last_res_packet_data);
2544 vec_add (sa->last_res_packet_data, ike, tlen);
2548 ikev2_payload_destroy_chain (chain);
2554 ikev2_retransmit_sa_init_one (ikev2_sa_t * sa, ike_header_t * ike,
2555 ip_address_t iaddr, ip_address_t raddr,
2560 u8 payload = ike->nextpayload;
2562 if (sa->ispi != clib_net_to_host_u64 (ike->ispi) ||
2563 ip_address_cmp (&sa->iaddr, &iaddr) ||
2564 ip_address_cmp (&sa->raddr, &raddr))
2569 while (p < rlen && payload != IKEV2_PAYLOAD_NONE)
2571 ike_payload_header_t *ikep = (ike_payload_header_t *) & ike->payload[p];
2572 u32 plen = clib_net_to_host_u16 (ikep->length);
2574 if (plen < sizeof (ike_payload_header_t))
2577 if (payload == IKEV2_PAYLOAD_NONCE &&
2578 !clib_memcmp (sa->i_nonce, ikep->payload, plen - sizeof (*ikep)))
2580 /* req is retransmit */
2581 if (sa->state == IKEV2_STATE_SA_INIT)
2583 tmp = (ike_header_t *) sa->last_sa_init_res_packet_data;
2584 u32 slen = clib_net_to_host_u32 (tmp->length);
2585 ike->ispi = tmp->ispi;
2586 ike->rspi = tmp->rspi;
2587 ike->nextpayload = tmp->nextpayload;
2588 ike->version = tmp->version;
2589 ike->exchange = tmp->exchange;
2590 ike->flags = tmp->flags;
2591 ike->msgid = tmp->msgid;
2592 ike->length = tmp->length;
2593 clib_memcpy_fast (ike->payload, tmp->payload,
2594 slen - sizeof (*ike));
2595 ikev2_elog_uint_peers (IKEV2_LOG_DEBUG,
2596 "ispi %lx IKE_SA_INIT retransmit "
2597 "from %d.%d.%d.%d to %d.%d.%d.%d",
2599 ip_addr_v4 (&raddr).as_u32,
2600 ip_addr_v4 (&iaddr).as_u32);
2603 /* else ignore req */
2606 ikev2_elog_uint_peers (IKEV2_LOG_DEBUG,
2607 "ispi %lx IKE_SA_INIT ignore "
2608 "from %d.%d.%d.%d to %d.%d.%d.%d",
2610 ip_addr_v4 (&raddr).as_u32,
2611 ip_addr_v4 (&iaddr).as_u32);
2615 payload = ikep->nextpayload;
2623 ikev2_retransmit_sa_init (ike_header_t * ike, ip_address_t iaddr,
2624 ip_address_t raddr, u32 rlen)
2628 ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
2631 pool_foreach (sa, ptd->sas, ({
2632 res = ikev2_retransmit_sa_init_one (sa, ike, iaddr, raddr, rlen);
2638 /* req is not retransmit */
2643 ikev2_retransmit_resp (ikev2_sa_t * sa, ike_header_t * ike)
2645 if (ike_hdr_is_response (ike))
2648 u32 msg_id = clib_net_to_host_u32 (ike->msgid);
2651 if (msg_id > sa->last_msg_id)
2653 sa->last_msg_id = msg_id;
2657 /* retransmitted req */
2658 if (msg_id == sa->last_msg_id)
2660 ike_header_t *tmp = (ike_header_t *) sa->last_res_packet_data;
2661 u32 slen = clib_net_to_host_u32 (tmp->length);
2662 ike->ispi = tmp->ispi;
2663 ike->rspi = tmp->rspi;
2664 ike->nextpayload = tmp->nextpayload;
2665 ike->version = tmp->version;
2666 ike->exchange = tmp->exchange;
2667 ike->flags = tmp->flags;
2668 ike->msgid = tmp->msgid;
2669 ike->length = tmp->length;
2670 clib_memcpy_fast (ike->payload, tmp->payload, slen - sizeof (*ike));
2671 ikev2_elog_uint_peers (IKEV2_LOG_DEBUG, "IKE retransmit msgid %d",
2672 msg_id, ip_addr_v4 (&sa->raddr).as_u32,
2673 ip_addr_v4 (&sa->iaddr).as_u32);
2677 /* old req ignore */
2678 ikev2_elog_uint_peers (IKEV2_LOG_DEBUG, "IKE req ignore msgid %d",
2679 msg_id, ip_addr_v4 (&sa->raddr).as_u32,
2680 ip_addr_v4 (&sa->iaddr).as_u32);
2685 ikev2_init_sa (vlib_main_t * vm, ikev2_sa_t * sa)
2687 ikev2_main_t *km = &ikev2_main;
2688 sa->liveness_period_check = vlib_time_now (vm) + km->liveness_period;
2689 sa->profile_index = ~0;
2693 ikev2_del_sa_init_from_main (u64 * ispi)
2695 ikev2_main_t *km = &ikev2_main;
2696 uword *p = hash_get (km->sa_by_ispi, *ispi);
2699 ikev2_sa_t *sai = pool_elt_at_index (km->sais, p[0]);
2700 hash_unset (km->sa_by_ispi, sai->ispi);
2701 ikev2_sa_free_all_vec (sai);
2702 pool_put (km->sais, sai);
2707 ikev2_del_sa_init (u64 ispi)
2709 vl_api_rpc_call_main_thread (ikev2_del_sa_init_from_main, (u8 *) & ispi,
2713 static_always_inline void
2714 ikev2_rewrite_v6_addrs (ikev2_sa_t * sa, ip6_header_t * ih)
2716 if (sa->is_initiator)
2718 ip_address_copy_addr (&ih->dst_address, &sa->raddr);
2719 ip_address_copy_addr (&ih->src_address, &sa->iaddr);
2723 ip_address_copy_addr (&ih->dst_address, &sa->iaddr);
2724 ip_address_copy_addr (&ih->src_address, &sa->raddr);
2728 static_always_inline void
2729 ikev2_rewrite_v4_addrs (ikev2_sa_t * sa, ip4_header_t * ih)
2731 if (sa->is_initiator)
2733 ip_address_copy_addr (&ih->dst_address, &sa->raddr);
2734 ip_address_copy_addr (&ih->src_address, &sa->iaddr);
2738 ip_address_copy_addr (&ih->dst_address, &sa->iaddr);
2739 ip_address_copy_addr (&ih->src_address, &sa->raddr);
2743 static_always_inline void
2744 ikev2_set_ip_address (ikev2_sa_t * sa, const void *iaddr,
2745 const void *raddr, const int af)
2747 ip_address_set (&sa->raddr, raddr, af);
2748 ip_address_set (&sa->iaddr, iaddr, af);
2752 ikev2_elog_uint_peers_addr (u32 exchange, ip4_header_t * ip4,
2753 ip6_header_t * ip6, u8 is_ip4)
2758 src = ip4->src_address.as_u32;
2759 dst = ip4->dst_address.as_u32;
2763 src = ip6->src_address.as_u32[3];
2764 dst = ip6->dst_address.as_u32[3];
2766 ikev2_elog_uint_peers (IKEV2_LOG_WARNING, "IKEv2 exchange %d "
2767 "received from %d.%d.%d.%d to %d.%d.%d.%d",
2768 exchange, src, dst);
2771 static_always_inline uword
2772 ikev2_node_internal (vlib_main_t * vm,
2773 vlib_node_runtime_t * node, vlib_frame_t * frame,
2776 u32 n_left = frame->n_vectors, *from;
2777 ikev2_main_t *km = &ikev2_main;
2778 vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
2779 u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
2780 ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
2783 from = vlib_frame_vector_args (frame);
2784 vlib_get_buffers (vm, from, bufs, n_left);
2789 vlib_buffer_t *b0 = b[0];
2790 next[0] = is_ip4 ? IKEV2_NEXT_IP4_ERROR_DROP
2791 : IKEV2_NEXT_IP6_ERROR_DROP;
2792 ip4_header_t *ip40 = 0;
2793 ip6_header_t *ip60 = 0;
2796 ikev2_sa_t *sa0 = 0;
2797 ikev2_sa_t sa; /* temporary store for SA */
2800 int is_req = 0, has_non_esp_marker = 0;
2802 if (b0->punt_reason == ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0])
2804 u8 *ptr = vlib_buffer_get_current (b0);
2805 ip40 = (ip4_header_t *) ptr;
2806 ptr += sizeof (*ip40);
2807 udp0 = (udp_header_t *) ptr;
2808 ptr += sizeof (*udp0);
2809 ike0 = (ike_header_t *) ptr;
2810 ip_hdr_sz = sizeof (*ip40);
2814 u8 *ipx_hdr = b0->data + vnet_buffer (b0)->l3_hdr_offset;
2815 ike0 = vlib_buffer_get_current (b0);
2816 vlib_buffer_advance (b0, -sizeof (*udp0));
2817 udp0 = vlib_buffer_get_current (b0);
2821 ip40 = (ip4_header_t *) ipx_hdr;
2822 ip_hdr_sz = sizeof (*ip40);
2826 ip60 = (ip6_header_t *) ipx_hdr;
2827 ip_hdr_sz = sizeof (*ip60);
2829 vlib_buffer_advance (b0, -ip_hdr_sz);
2832 rlen = b0->current_length - ip_hdr_sz - sizeof (*udp0);
2834 /* check for non-esp marker */
2835 if (*((u32 *) ike0) == 0)
2838 (ike_header_t *) ((u8 *) ike0 + sizeof (ikev2_non_esp_marker));
2839 rlen -= sizeof (ikev2_non_esp_marker);
2840 has_non_esp_marker = 1;
2843 if (clib_net_to_host_u32 (ike0->length) != rlen)
2845 vlib_node_increment_counter (vm, node->node_index,
2846 IKEV2_ERROR_BAD_LENGTH, 1);
2850 if (ike0->version != IKE_VERSION_2)
2852 vlib_node_increment_counter (vm, node->node_index,
2853 IKEV2_ERROR_NOT_IKEV2, 1);
2857 if (ike0->exchange == IKEV2_EXCHANGE_SA_INIT)
2860 clib_memset (sa0, 0, sizeof (*sa0));
2862 if (ike_hdr_is_initiator (ike0))
2864 if (ike0->rspi == 0)
2867 ikev2_set_ip_address (sa0, &ip40->src_address,
2868 &ip40->dst_address, AF_IP4);
2870 ikev2_set_ip_address (sa0, &ip60->src_address,
2871 &ip60->dst_address, AF_IP6);
2873 sa0->dst_port = clib_net_to_host_u16 (udp0->src_port);
2876 ikev2_retransmit_sa_init (ike0, sa0->iaddr,
2880 vlib_node_increment_counter (vm, node->node_index,
2883 IKEV2_ERROR_IKE_SA_INIT_IGNORE
2885 IKEV2_ERROR_IKE_SA_INIT_RETRANSMIT,
2890 res = ikev2_process_sa_init_req (vm, sa0, ike0, udp0, rlen);
2892 vlib_node_increment_counter (vm, node->node_index,
2893 IKEV2_ERROR_MALFORMED_PACKET,
2896 if (sa0->state == IKEV2_STATE_SA_INIT)
2898 ikev2_sa_free_proposal_vector (&sa0->r_proposals);
2900 ikev2_select_proposal (sa0->i_proposals,
2901 IKEV2_PROTOCOL_IKE);
2902 ikev2_generate_sa_init_data (sa0);
2905 if (sa0->state == IKEV2_STATE_SA_INIT
2906 || sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE)
2908 ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
2909 slen = ikev2_generate_message (b0, sa0, ike0, 0, udp0);
2911 vlib_node_increment_counter (vm, node->node_index,
2912 IKEV2_ERROR_NO_BUFF_SPACE,
2916 if (sa0->state == IKEV2_STATE_SA_INIT)
2918 /* add SA to the pool */
2919 pool_get (ptd->sas, sa0);
2920 clib_memcpy_fast (sa0, &sa, sizeof (*sa0));
2921 ikev2_init_sa (vm, sa0);
2922 hash_set (ptd->sa_by_rspi, sa0->rspi, sa0 - ptd->sas);
2926 ikev2_sa_free_all_vec (sa0);
2930 else //received sa_init without initiator flag
2933 ikev2_set_ip_address (sa0, &ip40->dst_address,
2934 &ip40->src_address, AF_IP4);
2936 ikev2_set_ip_address (sa0, &ip60->dst_address,
2937 &ip60->src_address, AF_IP6);
2939 ikev2_process_sa_init_resp (vm, sa0, ike0, udp0, rlen);
2941 if (sa0->state == IKEV2_STATE_SA_INIT)
2944 ike0->exchange = IKEV2_EXCHANGE_IKE_AUTH;
2945 uword *p = hash_get (km->sa_by_ispi, sa0->ispi);
2948 ikev2_sa_t *sai = pool_elt_at_index (km->sais, p[0]);
2950 if (clib_atomic_bool_cmp_and_swap
2951 (&sai->init_response_received, 0, 1))
2953 ikev2_complete_sa_data (sa0, sai);
2954 ikev2_calc_keys (sa0);
2955 ikev2_sa_auth_init (sa0);
2956 ike0->flags = IKEV2_HDR_FLAG_INITIATOR;
2958 ikev2_generate_message (b0, sa0, ike0, 0, udp0);
2960 vlib_node_increment_counter (vm,
2962 IKEV2_ERROR_NO_BUFF_SPACE,
2967 /* we've already processed sa-init response */
2968 sa0->state = IKEV2_STATE_UNKNOWN;
2973 if (sa0->state == IKEV2_STATE_SA_INIT)
2975 /* add SA to the pool */
2976 pool_get (ptd->sas, sa0);
2977 clib_memcpy_fast (sa0, &sa, sizeof (*sa0));
2978 hash_set (ptd->sa_by_rspi, sa0->rspi, sa0 - ptd->sas);
2982 ikev2_sa_free_all_vec (sa0);
2986 else if (ike0->exchange == IKEV2_EXCHANGE_IKE_AUTH)
2989 p = hash_get (ptd->sa_by_rspi, clib_net_to_host_u64 (ike0->rspi));
2992 sa0 = pool_elt_at_index (ptd->sas, p[0]);
2993 slen = ikev2_retransmit_resp (sa0, ike0);
2996 vlib_node_increment_counter (vm, node->node_index,
2999 IKEV2_ERROR_IKE_REQ_IGNORE
3001 IKEV2_ERROR_IKE_REQ_RETRANSMIT,
3006 sa0->dst_port = clib_net_to_host_u16 (udp0->src_port);
3007 res = ikev2_process_auth_req (vm, sa0, ike0, rlen);
3009 ikev2_sa_auth (sa0);
3011 vlib_node_increment_counter (vm, node->node_index,
3012 IKEV2_ERROR_MALFORMED_PACKET, 1);
3013 if (sa0->state == IKEV2_STATE_AUTHENTICATED)
3015 ikev2_initial_contact_cleanup (ptd, sa0);
3016 ikev2_sa_match_ts (sa0);
3017 if (sa0->state != IKEV2_STATE_TS_UNACCEPTABLE)
3018 ikev2_create_tunnel_interface (vm, sa0,
3023 if (sa0->is_initiator)
3025 ikev2_del_sa_init (sa0->ispi);
3029 slen = ikev2_generate_message (b0, sa0, ike0, 0, udp0);
3031 vlib_node_increment_counter (vm, node->node_index,
3032 IKEV2_ERROR_NO_BUFF_SPACE,
3037 else if (ike0->exchange == IKEV2_EXCHANGE_INFORMATIONAL)
3040 p = hash_get (ptd->sa_by_rspi, clib_net_to_host_u64 (ike0->rspi));
3043 sa0 = pool_elt_at_index (ptd->sas, p[0]);
3044 slen = ikev2_retransmit_resp (sa0, ike0);
3047 vlib_node_increment_counter (vm, node->node_index,
3050 IKEV2_ERROR_IKE_REQ_IGNORE
3052 IKEV2_ERROR_IKE_REQ_RETRANSMIT,
3057 res = ikev2_process_informational_req (vm, sa0, ike0, rlen);
3060 vlib_node_increment_counter (vm, node->node_index,
3061 IKEV2_ERROR_MALFORMED_PACKET,
3069 if (sa0->del[0].protocol_id != IKEV2_PROTOCOL_IKE)
3071 ikev2_delete_t *d, *tmp, *resp = 0;
3072 vec_foreach (d, sa0->del)
3074 ikev2_child_sa_t *ch_sa;
3075 ch_sa = ikev2_sa_get_child (sa0, d->spi,
3077 !sa0->is_initiator);
3080 ikev2_delete_tunnel_interface (km->vnet_main,
3082 if (!sa0->is_initiator)
3084 vec_add2 (resp, tmp, 1);
3085 tmp->protocol_id = d->protocol_id;
3086 tmp->spi = ch_sa->r_proposals[0].spi;
3088 ikev2_sa_del_child_sa (sa0, ch_sa);
3091 if (!sa0->is_initiator)
3093 vec_free (sa0->del);
3098 if (ike_hdr_is_request (ike0))
3100 ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
3101 slen = ikev2_generate_message (b0, sa0, ike0, 0, udp0);
3103 vlib_node_increment_counter (vm, node->node_index,
3104 IKEV2_ERROR_NO_BUFF_SPACE,
3109 else if (ike0->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA)
3112 p = hash_get (ptd->sa_by_rspi, clib_net_to_host_u64 (ike0->rspi));
3115 sa0 = pool_elt_at_index (ptd->sas, p[0]);
3116 slen = ikev2_retransmit_resp (sa0, ike0);
3119 vlib_node_increment_counter (vm, node->node_index,
3122 IKEV2_ERROR_IKE_REQ_IGNORE
3124 IKEV2_ERROR_IKE_REQ_RETRANSMIT,
3129 res = ikev2_process_create_child_sa_req (vm, sa0, ike0, rlen);
3132 vlib_node_increment_counter (vm, node->node_index,
3133 IKEV2_ERROR_MALFORMED_PACKET,
3141 if (sa0->rekey[0].protocol_id != IKEV2_PROTOCOL_IKE)
3144 ikev2_sa_free_all_child_sa (&sa0->childs);
3145 ikev2_child_sa_t *child;
3146 vec_add2 (sa0->childs, child, 1);
3147 clib_memset (child, 0, sizeof (*child));
3148 child->r_proposals = sa0->rekey[0].r_proposal;
3149 child->i_proposals = sa0->rekey[0].i_proposal;
3150 child->tsi = sa0->rekey[0].tsi;
3151 child->tsr = sa0->rekey[0].tsr;
3152 ikev2_create_tunnel_interface (vm, sa0, child, p[0],
3153 child - sa0->childs, 1);
3155 if (sa0->is_initiator)
3157 vec_free (sa0->rekey);
3161 ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
3162 slen = ikev2_generate_message (b0, sa0, ike0, 0, udp0);
3164 vlib_node_increment_counter (vm, node->node_index,
3165 IKEV2_ERROR_NO_BUFF_SPACE,
3173 ikev2_elog_uint_peers_addr (ike0->exchange, ip40, ip60, is_ip4);
3177 /* if we are sending packet back, rewrite headers */
3178 if (slen && ~0 != slen)
3182 next[0] = IKEV2_NEXT_IP4_LOOKUP;
3183 ikev2_rewrite_v4_addrs (sa0, ip40);
3187 next[0] = IKEV2_NEXT_IP6_LOOKUP;
3188 ikev2_rewrite_v6_addrs (sa0, ip60);
3193 udp0->dst_port = udp0->src_port =
3194 clib_net_to_host_u16 (ikev2_get_port (sa0));
3196 if (udp0->dst_port == clib_net_to_host_u16 (IKEV2_PORT_NATT)
3199 if (!has_non_esp_marker)
3200 slen = ikev2_insert_non_esp_marker (ike0, slen);
3205 if (has_non_esp_marker)
3206 slen += sizeof (ikev2_non_esp_marker);
3208 u16 tp = udp0->dst_port;
3209 udp0->dst_port = udp0->src_port;
3210 udp0->src_port = tp;
3213 udp0->length = clib_host_to_net_u16 (slen + sizeof (udp_header_t));
3215 b0->current_length = slen + ip_hdr_sz + sizeof (udp_header_t);
3218 ip40->length = clib_host_to_net_u16 (b0->current_length);
3219 ip40->checksum = ip4_header_checksum (ip40);
3223 ip60->payload_length =
3224 clib_host_to_net_u16 (b0->current_length - sizeof (*ip60));
3228 if (sa0 && (sa0->state == IKEV2_STATE_DELETED ||
3229 sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE))
3231 ikev2_child_sa_t *c;
3233 vec_foreach (c, sa0->childs)
3234 ikev2_delete_tunnel_interface (km->vnet_main, sa0, c);
3236 ikev2_delete_sa (ptd, sa0);
3238 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
3239 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
3242 ikev2_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
3243 t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3244 t->next_index = next[0];
3251 vlib_node_increment_counter (vm, node->node_index,
3252 IKEV2_ERROR_PROCESSED, frame->n_vectors);
3253 vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
3254 return frame->n_vectors;
3258 ikev2_ip4 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
3260 return ikev2_node_internal (vm, node, frame, 1 /* is_ip4 */ );
3264 ikev2_ip6 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
3266 return ikev2_node_internal (vm, node, frame, 0 /* is_ip4 */ );
3270 VLIB_REGISTER_NODE (ikev2_node_ip4,static) = {
3271 .function = ikev2_ip4,
3272 .name = "ikev2-ip4",
3273 .vector_size = sizeof (u32),
3274 .format_trace = format_ikev2_trace,
3275 .type = VLIB_NODE_TYPE_INTERNAL,
3277 .n_errors = ARRAY_LEN(ikev2_error_strings),
3278 .error_strings = ikev2_error_strings,
3280 .n_next_nodes = IKEV2_IP4_N_NEXT,
3282 [IKEV2_NEXT_IP4_LOOKUP] = "ip4-lookup",
3283 [IKEV2_NEXT_IP4_ERROR_DROP] = "error-drop",
3287 VLIB_REGISTER_NODE (ikev2_node_ip6,static) = {
3288 .function = ikev2_ip6,
3289 .name = "ikev2-ip6",
3290 .vector_size = sizeof (u32),
3291 .format_trace = format_ikev2_trace,
3292 .type = VLIB_NODE_TYPE_INTERNAL,
3294 .n_errors = ARRAY_LEN(ikev2_error_strings),
3295 .error_strings = ikev2_error_strings,
3297 .n_next_nodes = IKEV2_IP6_N_NEXT,
3299 [IKEV2_NEXT_IP6_LOOKUP] = "ip6-lookup",
3300 [IKEV2_NEXT_IP6_ERROR_DROP] = "error-drop",
3305 // set ikev2 proposals when vpp is used as initiator
3306 static clib_error_t *
3307 ikev2_set_initiator_proposals (vlib_main_t * vm, ikev2_sa_t * sa,
3308 ikev2_transforms_set * ts,
3309 ikev2_sa_proposal_t ** proposals, int is_ike)
3312 ikev2_main_t *km = &ikev2_main;
3313 ikev2_sa_proposal_t *proposal;
3314 vec_add2 (*proposals, proposal, 1);
3315 ikev2_sa_transform_t *td;
3320 vec_foreach (td, km->supported_transforms)
3322 if (td->type == IKEV2_TRANSFORM_TYPE_ENCR
3323 && td->encr_type == ts->crypto_alg
3324 && td->key_len == ts->crypto_key_size / 8)
3327 attr[0] = clib_host_to_net_u16 (14 | (1 << 15));
3328 attr[1] = clib_host_to_net_u16 (td->key_len << 3);
3329 vec_add (td->attrs, (u8 *) attr, 4);
3330 vec_add1 (proposal->transforms, *td);
3339 r = clib_error_return (0, "Unsupported algorithm");
3343 if (IKEV2_TRANSFORM_INTEG_TYPE_NONE != ts->integ_alg)
3347 vec_foreach (td, km->supported_transforms)
3349 if (td->type == IKEV2_TRANSFORM_TYPE_INTEG
3350 && td->integ_type == ts->integ_alg)
3352 vec_add1 (proposal->transforms, *td);
3360 ("Didn't find any supported algorithm for IKEV2_TRANSFORM_TYPE_INTEG");
3361 r = clib_error_return (0, "Unsupported algorithm");
3370 vec_foreach (td, km->supported_transforms)
3372 if (td->type == IKEV2_TRANSFORM_TYPE_PRF
3373 && td->prf_type == IKEV2_TRANSFORM_PRF_TYPE_PRF_HMAC_SHA2_256)
3375 vec_add1 (proposal->transforms, *td);
3382 r = clib_error_return (0, "Unsupported algorithm");
3391 vec_foreach (td, km->supported_transforms)
3393 if (td->type == IKEV2_TRANSFORM_TYPE_DH && td->dh_type == ts->dh_type)
3395 vec_add1 (proposal->transforms, *td);
3398 sa->dh_group = td->dh_type;
3406 r = clib_error_return (0, "Unsupported algorithm");
3414 vec_foreach (td, km->supported_transforms)
3416 if (td->type == IKEV2_TRANSFORM_TYPE_ESN)
3418 vec_add1 (proposal->transforms, *td);
3424 r = clib_error_return (0, "Unsupported algorithm");
3433 static ikev2_profile_t *
3434 ikev2_profile_index_by_name (u8 * name)
3436 ikev2_main_t *km = &ikev2_main;
3439 p = mhash_get (&km->profile_index_by_name, name);
3443 return pool_elt_at_index (km->profiles, p[0]);
3448 ikev2_send_ike (vlib_main_t * vm, ip_address_t * src, ip_address_t * dst,
3449 u32 bi0, u32 len, u16 src_port, u16 dst_port, u32 sw_if_index)
3458 b0 = vlib_get_buffer (vm, bi0);
3459 vlib_buffer_advance (b0, -sizeof (udp_header_t));
3460 udp0 = vlib_buffer_get_current (b0);
3461 udp0->dst_port = clib_host_to_net_u16 (dst_port);
3462 udp0->src_port = clib_host_to_net_u16 (src_port);
3463 udp0->length = clib_host_to_net_u16 (len + sizeof (udp_header_t));
3466 if (ip_addr_version (dst) == AF_IP4)
3468 vlib_buffer_advance (b0, -sizeof (ip4_header_t));
3469 ip40 = vlib_buffer_get_current (b0);
3470 ip40->ip_version_and_header_length = 0x45;
3472 ip40->fragment_id = 0;
3473 ip40->flags_and_fragment_offset = 0;
3475 ip40->protocol = IP_PROTOCOL_UDP;
3476 ip40->dst_address.as_u32 = ip_addr_v4 (dst).as_u32;
3477 ip40->src_address.as_u32 = ip_addr_v4 (src).as_u32;
3478 b0->current_length =
3479 len + sizeof (ip4_header_t) + sizeof (udp_header_t);
3480 ip40->length = clib_host_to_net_u16 (b0->current_length);
3481 ip40->checksum = ip4_header_checksum (ip40);
3485 vlib_buffer_advance (b0, -sizeof (ip6_header_t));
3486 ip60 = vlib_buffer_get_current (b0);
3488 b0->current_length = len + sizeof (*ip60) + sizeof (udp_header_t);
3489 ip60->ip_version_traffic_class_and_flow_label =
3490 clib_host_to_net_u32 (0x6 << 28);
3491 ip60->payload_length =
3492 clib_host_to_net_u16 (b0->current_length - sizeof (*ip60));
3493 ip60->protocol = IP_PROTOCOL_UDP;
3494 ip60->hop_limit = 0xff;
3495 clib_memcpy_fast (ip60->src_address.as_u8, ip_addr_v6 (src).as_u8,
3496 sizeof (ip60->src_address));
3497 clib_memcpy_fast (ip60->dst_address.as_u8, ip_addr_v6 (dst).as_u8,
3498 sizeof (ip60->src_address));
3501 b0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
3502 vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index;
3503 vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0;
3505 u32 next_index = (ip_addr_version (dst) == AF_IP4) ?
3506 ip4_lookup_node.index : ip6_lookup_node.index;
3508 /* send the request */
3509 f = vlib_get_frame_to_node (vm, next_index);
3510 to_next = vlib_frame_vector_args (f);
3513 vlib_put_frame_to_node (vm, next_index, f);
3518 ikev2_get_new_ike_header_buff (vlib_main_t * vm, vlib_buffer_t ** b)
3521 if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
3526 *b = vlib_get_buffer (vm, bi0);
3531 ikev2_set_local_key (vlib_main_t * vm, u8 * file)
3533 ikev2_main_t *km = &ikev2_main;
3536 EVP_PKEY_free (km->pkey);
3537 km->pkey = ikev2_load_key_file (file);
3538 if (km->pkey == NULL)
3539 return clib_error_return (0, "load key '%s' failed", file);
3544 static_always_inline vnet_api_error_t
3545 ikev2_register_udp_port (ikev2_profile_t * p, u16 port)
3547 ikev2_main_t *km = &ikev2_main;
3548 udp_dst_port_info_t *pi;
3550 uword *v = hash_get (km->udp_ports, port);
3551 pi = udp_get_dst_port_info (&udp_main, port, UDP_IP4);
3555 /* IKE already uses this port, only increment reference counter */
3562 return VNET_API_ERROR_UDP_PORT_TAKEN;
3564 udp_register_dst_port (km->vlib_main, port,
3565 ipsec4_tun_input_node.index, 1);
3566 hash_set (km->udp_ports, port, 1);
3568 p->ipsec_over_udp_port = port;
3572 static_always_inline void
3573 ikev2_unregister_udp_port (ikev2_profile_t * p)
3575 ikev2_main_t *km = &ikev2_main;
3578 if (p->ipsec_over_udp_port == IPSEC_UDP_PORT_NONE)
3581 v = hash_get (km->udp_ports, p->ipsec_over_udp_port);
3589 udp_unregister_dst_port (km->vlib_main, p->ipsec_over_udp_port, 1);
3590 hash_unset (km->udp_ports, p->ipsec_over_udp_port);
3593 p->ipsec_over_udp_port = IPSEC_UDP_PORT_NONE;
3597 ikev2_initiate_delete_ike_sa_internal (vlib_main_t * vm,
3598 ikev2_main_per_thread_data_t * tkm,
3599 ikev2_sa_t * sa, u8 send_notification)
3601 ikev2_main_t *km = &ikev2_main;
3602 ip_address_t *src, *dst;
3604 ikev2_child_sa_t *c;
3606 /* Create the Initiator notification for IKE SA removal */
3611 vec_resize (sa->del, 1);
3612 sa->del->protocol_id = IKEV2_PROTOCOL_IKE;
3613 sa->del->spi = sa->ispi;
3615 if (send_notification)
3617 bi0 = ikev2_get_new_ike_header_buff (vm, &b0);
3620 ikev2_log_error ("buffer alloc failure");
3624 ike0 = vlib_buffer_get_current (b0);
3625 ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL;
3626 ike0->ispi = clib_host_to_net_u64 (sa->ispi);
3627 ike0->rspi = clib_host_to_net_u64 (sa->rspi);
3629 ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id + 1);
3630 sa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid);
3631 len = ikev2_generate_message (b0, sa, ike0, 0, 0);
3636 len = ikev2_insert_non_esp_marker (ike0, len);
3638 if (sa->is_initiator)
3649 ikev2_send_ike (vm, src, dst, bi0, len,
3650 ikev2_get_port (sa), sa->dst_port, 0);
3654 /* delete local SA */
3655 vec_foreach (c, sa->childs)
3656 ikev2_delete_tunnel_interface (km->vnet_main, sa, c);
3658 u64 rspi = sa->rspi;
3659 ikev2_sa_free_all_vec (sa);
3660 uword *p = hash_get (tkm->sa_by_rspi, rspi);
3663 hash_unset (tkm->sa_by_rspi, rspi);
3664 pool_put (tkm->sas, sa);
3669 ikev2_cleanup_profile_sessions (ikev2_main_t * km, ikev2_profile_t * p)
3671 ikev2_main_per_thread_data_t *tkm;
3673 u32 pi = p - km->profiles;
3678 pool_foreach(sa, km->sais, ({
3679 if (pi == sa->profile_index)
3680 vec_add1 (del_sai, sa - km->sais);
3684 vec_foreach (sai, del_sai)
3686 sa = pool_elt_at_index (km->sais, sai[0]);
3687 ikev2_sa_free_all_vec (sa);
3688 hash_unset (km->sa_by_ispi, sa->ispi);
3689 pool_put (km->sais, sa);
3691 vec_reset_length (del_sai);
3693 vec_foreach (tkm, km->per_thread_data)
3696 pool_foreach (sa, tkm->sas, ({
3697 if (sa->profile_index != ~0 && pi == sa->profile_index)
3698 vec_add1 (del_sai, sa - tkm->sas);
3702 vec_foreach (sai, del_sai)
3704 sa = pool_elt_at_index (tkm->sas, sai[0]);
3705 ikev2_initiate_delete_ike_sa_internal (km->vlib_main, tkm, sa, 1);
3708 vec_reset_length (del_sai);
3715 ikev2_profile_free (ikev2_profile_t * p)
3719 vec_free (p->auth.data);
3721 EVP_PKEY_free (p->auth.key);
3723 vec_free (p->loc_id.data);
3724 vec_free (p->rem_id.data);
3728 ikev2_add_del_profile (vlib_main_t * vm, u8 * name, int is_add)
3730 ikev2_main_t *km = &ikev2_main;
3735 if (ikev2_profile_index_by_name (name))
3736 return clib_error_return (0, "policy %v already exists", name);
3738 pool_get (km->profiles, p);
3739 clib_memset (p, 0, sizeof (*p));
3740 p->name = vec_dup (name);
3741 p->ipsec_over_udp_port = IPSEC_UDP_PORT_NONE;
3742 p->responder.sw_if_index = ~0;
3744 uword index = p - km->profiles;
3745 mhash_set_mem (&km->profile_index_by_name, name, &index, 0);
3749 p = ikev2_profile_index_by_name (name);
3751 return clib_error_return (0, "policy %v does not exists", name);
3753 ikev2_unregister_udp_port (p);
3754 ikev2_cleanup_profile_sessions (km, p);
3756 ikev2_profile_free (p);
3757 pool_put (km->profiles, p);
3758 mhash_unset (&km->profile_index_by_name, name, 0);
3764 ikev2_set_profile_auth (vlib_main_t * vm, u8 * name, u8 auth_method,
3765 u8 * auth_data, u8 data_hex_format)
3770 p = ikev2_profile_index_by_name (name);
3774 r = clib_error_return (0, "unknown profile %v", name);
3779 EVP_PKEY_free (p->auth.key);
3780 vec_free (p->auth.data);
3782 p->auth.method = auth_method;
3783 p->auth.data = vec_dup (auth_data);
3784 p->auth.hex = data_hex_format;
3786 if (auth_method == IKEV2_AUTH_METHOD_RSA_SIG)
3788 vec_add1 (p->auth.data, 0);
3789 p->auth.key = ikev2_load_cert_file (p->auth.data);
3790 if (p->auth.key == NULL)
3791 return clib_error_return (0, "load cert '%s' failed", p->auth.data);
3798 ikev2_is_id_supported (u8 id_type)
3800 return (id_type == IKEV2_ID_TYPE_ID_IPV4_ADDR ||
3801 id_type == IKEV2_ID_TYPE_ID_IPV6_ADDR ||
3802 id_type == IKEV2_ID_TYPE_ID_RFC822_ADDR ||
3803 id_type == IKEV2_ID_TYPE_ID_FQDN);
3807 ikev2_set_profile_id (vlib_main_t * vm, u8 * name, u8 id_type, u8 * data,
3813 if (!ikev2_is_id_supported (id_type))
3815 r = clib_error_return (0, "unsupported identity type %U",
3816 format_ikev2_id_type, id_type);
3820 p = ikev2_profile_index_by_name (name);
3824 r = clib_error_return (0, "unknown profile %v", name);
3830 vec_free (p->loc_id.data);
3831 p->loc_id.type = id_type;
3832 p->loc_id.data = vec_dup (data);
3836 vec_free (p->rem_id.data);
3837 p->rem_id.type = id_type;
3838 p->rem_id.data = vec_dup (data);
3844 static_always_inline void
3845 ikev2_set_ts_type (ikev2_ts_t * ts, const ip_address_t * addr)
3847 if (ip_addr_version (addr) == AF_IP4)
3848 ts->ts_type = TS_IPV4_ADDR_RANGE;
3850 ts->ts_type = TS_IPV6_ADDR_RANGE;
3853 static_always_inline void
3854 ikev2_set_ts_addrs (ikev2_ts_t * ts, const ip_address_t * start,
3855 const ip_address_t * end)
3857 ip_address_copy (&ts->start_addr, start);
3858 ip_address_copy (&ts->end_addr, end);
3862 ikev2_set_profile_ts (vlib_main_t * vm, u8 * name, u8 protocol_id,
3863 u16 start_port, u16 end_port, ip_address_t start_addr,
3864 ip_address_t end_addr, int is_local)
3869 p = ikev2_profile_index_by_name (name);
3873 r = clib_error_return (0, "unknown profile %v", name);
3877 if (ip_addr_version (&start_addr) != ip_addr_version (&end_addr))
3878 return clib_error_return (0, "IP address version mismatch!");
3882 ikev2_set_ts_addrs (&p->loc_ts, &start_addr, &end_addr);
3883 p->loc_ts.start_port = start_port;
3884 p->loc_ts.end_port = end_port;
3885 p->loc_ts.protocol_id = protocol_id;
3886 ikev2_set_ts_type (&p->loc_ts, &start_addr);
3890 ikev2_set_ts_addrs (&p->rem_ts, &start_addr, &end_addr);
3891 p->rem_ts.start_port = start_port;
3892 p->rem_ts.end_port = end_port;
3893 p->rem_ts.protocol_id = protocol_id;
3894 ikev2_set_ts_type (&p->rem_ts, &start_addr);
3902 ikev2_set_profile_responder (vlib_main_t * vm, u8 * name,
3903 u32 sw_if_index, ip_address_t addr)
3908 p = ikev2_profile_index_by_name (name);
3912 r = clib_error_return (0, "unknown profile %v", name);
3916 p->responder.sw_if_index = sw_if_index;
3917 ip_address_copy (&p->responder.addr, &addr);
3923 ikev2_set_profile_ike_transforms (vlib_main_t * vm, u8 * name,
3924 ikev2_transform_encr_type_t crypto_alg,
3925 ikev2_transform_integ_type_t integ_alg,
3926 ikev2_transform_dh_type_t dh_type,
3927 u32 crypto_key_size)
3932 p = ikev2_profile_index_by_name (name);
3936 r = clib_error_return (0, "unknown profile %v", name);
3940 p->ike_ts.crypto_alg = crypto_alg;
3941 p->ike_ts.integ_alg = integ_alg;
3942 p->ike_ts.dh_type = dh_type;
3943 p->ike_ts.crypto_key_size = crypto_key_size;
3948 ikev2_set_profile_esp_transforms (vlib_main_t * vm, u8 * name,
3949 ikev2_transform_encr_type_t crypto_alg,
3950 ikev2_transform_integ_type_t integ_alg,
3951 u32 crypto_key_size)
3956 p = ikev2_profile_index_by_name (name);
3960 r = clib_error_return (0, "unknown profile %v", name);
3964 p->esp_ts.crypto_alg = crypto_alg;
3965 p->esp_ts.integ_alg = integ_alg;
3966 p->esp_ts.crypto_key_size = crypto_key_size;
3971 ikev2_set_profile_tunnel_interface (vlib_main_t * vm,
3972 u8 * name, u32 sw_if_index)
3977 p = ikev2_profile_index_by_name (name);
3981 r = clib_error_return (0, "unknown profile %v", name);
3985 p->tun_itf = sw_if_index;
3991 ikev2_set_profile_ipsec_udp_port (vlib_main_t * vm, u8 * name, u16 port,
3994 ikev2_profile_t *p = ikev2_profile_index_by_name (name);
3995 ikev2_main_t *km = &ikev2_main;
3996 vnet_api_error_t rv = 0;
4000 return VNET_API_ERROR_INVALID_VALUE;
4004 if (p->ipsec_over_udp_port != IPSEC_UDP_PORT_NONE)
4005 return VNET_API_ERROR_VALUE_EXIST;
4007 rv = ikev2_register_udp_port (p, port);
4011 v = hash_get (km->udp_ports, port);
4013 return VNET_API_ERROR_IKE_NO_PORT;
4015 if (p->ipsec_over_udp_port == IPSEC_UDP_PORT_NONE)
4016 return VNET_API_ERROR_INVALID_VALUE;
4018 ikev2_unregister_udp_port (p);
4024 ikev2_set_profile_udp_encap (vlib_main_t * vm, u8 * name)
4026 ikev2_profile_t *p = ikev2_profile_index_by_name (name);
4031 r = clib_error_return (0, "unknown profile %v", name);
4040 ikev2_set_profile_sa_lifetime (vlib_main_t * vm, u8 * name,
4041 u64 lifetime, u32 jitter, u32 handover,
4047 p = ikev2_profile_index_by_name (name);
4051 r = clib_error_return (0, "unknown profile %v", name);
4055 p->lifetime = lifetime;
4056 p->lifetime_jitter = jitter;
4057 p->handover = handover;
4058 p->lifetime_maxdata = maxdata;
4063 ikev2_get_if_address (u32 sw_if_index, ip_address_family_t af,
4064 ip_address_t * out_addr)
4066 ip4_address_t *if_ip4;
4067 ip6_address_t *if_ip6;
4071 if_ip4 = ip4_interface_first_address (&ip4_main, sw_if_index, 0);
4074 ip_address_set (out_addr, if_ip4, AF_IP4);
4080 if_ip6 = ip6_interface_first_address (&ip6_main, sw_if_index);
4083 ip_address_set (out_addr, if_ip6, AF_IP6);
4091 ikev2_initiate_sa_init (vlib_main_t * vm, u8 * name)
4095 ikev2_main_t *km = &ikev2_main;
4099 int len = sizeof (ike_header_t), valid_ip = 0;
4100 ip_address_t if_ip = { };
4102 p = ikev2_profile_index_by_name (name);
4106 r = clib_error_return (0, "unknown profile %v", name);
4110 if (p->responder.sw_if_index == ~0
4111 || ip_address_is_zero (&p->responder.addr))
4113 r = clib_error_return (0, "responder not set for profile %v", name);
4117 if (ikev2_get_if_address (p->responder.sw_if_index,
4118 ip_addr_version (&p->responder.addr), &if_ip))
4123 bi0 = ikev2_get_new_ike_header_buff (vm, &b0);
4126 char *errmsg = "buffer alloc failure";
4127 ikev2_log_error (errmsg);
4128 return clib_error_return (0, errmsg);
4130 ike0 = vlib_buffer_get_current (b0);
4132 /* Prepare the SA and the IKE payload */
4134 clib_memset (&sa, 0, sizeof (ikev2_sa_t));
4135 ikev2_payload_chain_t *chain = 0;
4136 ikev2_payload_new_chain (chain);
4138 /* Build the IKE proposal payload */
4139 ikev2_sa_proposal_t *proposals = 0;
4140 ikev2_set_initiator_proposals (vm, &sa, &p->ike_ts, &proposals, 1);
4141 proposals[0].proposal_num = 1;
4142 proposals[0].protocol_id = IKEV2_PROTOCOL_IKE;
4144 /* Add and then cleanup proposal data */
4145 ikev2_payload_add_sa (chain, proposals);
4146 ikev2_sa_free_proposal_vector (&proposals);
4148 sa.is_initiator = 1;
4149 sa.profile_index = p - km->profiles;
4150 sa.state = IKEV2_STATE_SA_INIT;
4151 sa.tun_itf = p->tun_itf;
4152 sa.udp_encap = p->udp_encap;
4153 sa.ipsec_over_udp_port = p->ipsec_over_udp_port;
4154 sa.is_tun_itf_set = 1;
4155 sa.initial_contact = 1;
4156 sa.dst_port = IKEV2_PORT;
4157 ikev2_generate_sa_init_data (&sa);
4158 ikev2_payload_add_ke (chain, sa.dh_group, sa.i_dh_data);
4159 ikev2_payload_add_nonce (chain, sa.i_nonce);
4161 /* Build the child SA proposal */
4162 vec_resize (sa.childs, 1);
4163 ikev2_set_initiator_proposals (vm, &sa, &p->esp_ts,
4164 &sa.childs[0].i_proposals, 0);
4165 sa.childs[0].i_proposals[0].proposal_num = 1;
4166 sa.childs[0].i_proposals[0].protocol_id = IKEV2_PROTOCOL_ESP;
4167 RAND_bytes ((u8 *) & sa.childs[0].i_proposals[0].spi,
4168 sizeof (sa.childs[0].i_proposals[0].spi));
4170 /* Add NAT detection notification messages (mandatory) */
4171 u8 *nat_detection_sha1 =
4172 ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa.ispi),
4173 clib_host_to_net_u64 (sa.rspi),
4174 &if_ip, clib_host_to_net_u16 (IKEV2_PORT));
4176 ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP,
4177 nat_detection_sha1);
4178 vec_free (nat_detection_sha1);
4179 nat_detection_sha1 =
4180 ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa.ispi),
4181 clib_host_to_net_u64 (sa.rspi),
4183 clib_host_to_net_u16 (sa.dst_port));
4184 ikev2_payload_add_notify (chain,
4185 IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP,
4186 nat_detection_sha1);
4187 vec_free (nat_detection_sha1);
4189 u8 *sig_hash_algo = vec_new (u8, 8);
4190 u64 tmpsig = clib_host_to_net_u64 (0x0001000200030004);
4191 clib_memcpy_fast (sig_hash_algo, &tmpsig, sizeof (tmpsig));
4192 ikev2_payload_add_notify (chain,
4193 IKEV2_NOTIFY_MSG_SIGNATURE_HASH_ALGORITHMS,
4195 vec_free (sig_hash_algo);
4197 /* Buffer update and boilerplate */
4198 len += vec_len (chain->data);
4199 ike0->nextpayload = chain->first_payload_type;
4200 ike0->length = clib_host_to_net_u32 (len);
4201 clib_memcpy_fast (ike0->payload, chain->data, vec_len (chain->data));
4202 ikev2_payload_destroy_chain (chain);
4204 ike0->version = IKE_VERSION_2;
4205 ike0->flags = IKEV2_HDR_FLAG_INITIATOR;
4206 ike0->exchange = IKEV2_EXCHANGE_SA_INIT;
4207 ike0->ispi = clib_host_to_net_u64 (sa.ispi);
4211 /* store whole IKE payload - needed for PSK auth */
4212 vec_reset_length (sa.last_sa_init_req_packet_data);
4213 vec_add (sa.last_sa_init_req_packet_data, ike0, len);
4215 /* add data to the SA then add it to the pool */
4216 ip_address_copy (&sa.iaddr, &if_ip);
4217 ip_address_copy (&sa.raddr, &p->responder.addr);
4218 sa.i_id.type = p->loc_id.type;
4219 sa.i_id.data = vec_dup (p->loc_id.data);
4220 sa.r_id.type = p->rem_id.type;
4221 sa.r_id.data = vec_dup (p->rem_id.data);
4222 sa.i_auth.method = p->auth.method;
4223 sa.i_auth.hex = p->auth.hex;
4224 sa.i_auth.data = vec_dup (p->auth.data);
4225 sa.sw_if_index = p->responder.sw_if_index;
4226 vec_add (sa.childs[0].tsi, &p->loc_ts, 1);
4227 vec_add (sa.childs[0].tsr, &p->rem_ts, 1);
4229 ikev2_initial_contact_cleanup (0, &sa);
4231 /* add SA to the pool */
4232 ikev2_sa_t *sa0 = 0;
4233 pool_get (km->sais, sa0);
4234 clib_memcpy_fast (sa0, &sa, sizeof (*sa0));
4235 hash_set (km->sa_by_ispi, sa0->ispi, sa0 - km->sais);
4239 ikev2_send_ike (vm, &if_ip, &p->responder.addr, bi0, len,
4240 IKEV2_PORT, sa.dst_port, sa.sw_if_index);
4243 ("ispi %lx rspi %lx IKEV2_EXCHANGE_SA_INIT sent to ",
4244 clib_host_to_net_u64 (sa0->ispi), 0,
4245 ip_addr_v4 (&p->responder.addr).as_u32,
4246 ip_addr_version (&p->responder.addr) == AF_IP4);
4251 clib_error_return (0, "interface %U does not have any IP address!",
4252 format_vnet_sw_if_index_name, vnet_get_main (),
4253 p->responder.sw_if_index);
4261 ikev2_delete_child_sa_internal (vlib_main_t * vm, ikev2_sa_t * sa,
4262 ikev2_child_sa_t * csa)
4264 /* Create the Initiator notification for child SA removal */
4265 ikev2_main_t *km = &ikev2_main;
4271 bi0 = ikev2_get_new_ike_header_buff (vm, &b0);
4274 ikev2_log_error ("buffer alloc failure");
4278 ike0 = vlib_buffer_get_current (b0);
4279 ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL;
4280 ike0->ispi = clib_host_to_net_u64 (sa->ispi);
4281 ike0->rspi = clib_host_to_net_u64 (sa->rspi);
4283 vec_resize (sa->del, 1);
4284 sa->del->protocol_id = IKEV2_PROTOCOL_ESP;
4285 sa->del->spi = csa->i_proposals->spi;
4286 ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id + 1);
4287 sa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid);
4288 len = ikev2_generate_message (b0, sa, ike0, 0, 0);
4293 len = ikev2_insert_non_esp_marker (ike0, len);
4294 ikev2_send_ike (vm, &sa->iaddr, &sa->raddr, bi0, len,
4295 ikev2_get_port (sa), sa->dst_port, sa->sw_if_index);
4297 /* delete local child SA */
4298 ikev2_delete_tunnel_interface (km->vnet_main, sa, csa);
4299 ikev2_sa_del_child_sa (sa, csa);
4303 ikev2_initiate_delete_child_sa (vlib_main_t * vm, u32 ispi)
4306 ikev2_main_t *km = &ikev2_main;
4307 ikev2_main_per_thread_data_t *tkm;
4308 ikev2_sa_t *fsa = 0;
4309 ikev2_child_sa_t *fchild = 0;
4311 /* Search for the child SA */
4312 vec_foreach (tkm, km->per_thread_data)
4318 pool_foreach (sa, tkm->sas, ({
4319 fchild = ikev2_sa_get_child(sa, ispi, IKEV2_PROTOCOL_ESP, 1);
4329 if (!fchild || !fsa)
4331 r = clib_error_return (0, "Child SA not found");
4336 ikev2_delete_child_sa_internal (vm, fsa, fchild);
4343 ikev2_initiate_delete_ike_sa (vlib_main_t * vm, u64 ispi)
4346 ikev2_main_t *km = &ikev2_main;
4347 ikev2_main_per_thread_data_t *tkm;
4348 ikev2_sa_t *fsa = 0;
4349 ikev2_main_per_thread_data_t *ftkm = 0;
4351 /* Search for the IKE SA */
4352 vec_foreach (tkm, km->per_thread_data)
4358 pool_foreach (sa, tkm->sas, ({
4359 if (sa->ispi == ispi)
4371 r = clib_error_return (0, "IKE SA not found");
4375 ikev2_initiate_delete_ike_sa_internal (vm, ftkm, fsa, 1);
4380 ikev2_rekey_child_sa_internal (vlib_main_t * vm, ikev2_sa_t * sa,
4381 ikev2_child_sa_t * csa)
4383 /* Create the Initiator request for create child SA */
4389 bi0 = ikev2_get_new_ike_header_buff (vm, &b0);
4392 ikev2_log_error ("buffer alloc failure");
4396 ike0 = vlib_buffer_get_current (b0);
4397 ike0->version = IKE_VERSION_2;
4398 ike0->flags = IKEV2_HDR_FLAG_INITIATOR;
4399 ike0->exchange = IKEV2_EXCHANGE_CREATE_CHILD_SA;
4400 ike0->ispi = clib_host_to_net_u64 (sa->ispi);
4401 ike0->rspi = clib_host_to_net_u64 (sa->rspi);
4402 ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id + 1);
4403 sa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid);
4405 ikev2_rekey_t *rekey;
4406 vec_add2 (sa->rekey, rekey, 1);
4407 ikev2_sa_proposal_t *proposals = vec_dup (csa->i_proposals);
4410 RAND_bytes ((u8 *) & proposals[0].spi, sizeof (proposals[0].spi));
4411 rekey->spi = proposals[0].spi;
4412 rekey->ispi = csa->i_proposals->spi;
4413 len = ikev2_generate_message (b0, sa, ike0, proposals, 0);
4418 len = ikev2_insert_non_esp_marker (ike0, len);
4419 ikev2_send_ike (vm, &sa->iaddr, &sa->raddr, bi0, len,
4420 ikev2_get_port (sa), ikev2_get_port (sa), sa->sw_if_index);
4421 vec_free (proposals);
4425 ikev2_initiate_rekey_child_sa (vlib_main_t * vm, u32 ispi)
4428 ikev2_main_t *km = &ikev2_main;
4429 ikev2_main_per_thread_data_t *tkm;
4430 ikev2_sa_t *fsa = 0;
4431 ikev2_child_sa_t *fchild = 0;
4433 /* Search for the child SA */
4434 vec_foreach (tkm, km->per_thread_data)
4440 pool_foreach (sa, tkm->sas, ({
4441 fchild = ikev2_sa_get_child(sa, ispi, IKEV2_PROTOCOL_ESP, 1);
4451 if (!fchild || !fsa)
4453 r = clib_error_return (0, "Child SA not found");
4458 ikev2_rekey_child_sa_internal (vm, fsa, fchild);
4465 ikev2_sa_sw_if_match (ikev2_sa_t * sa, u32 sw_if_index)
4467 return (sa->sw_if_index == sw_if_index) && sa->is_initiator;
4471 ikev2_sa_del (ikev2_profile_t * p, u32 sw_if_index)
4473 u64 *ispi, *ispi_vec = 0;
4474 ikev2_sa_t *sa, **sap, **sa_vec = 0;
4475 ikev2_main_t *km = &ikev2_main;
4476 ikev2_main_per_thread_data_t *tkm;
4477 p->responder.sw_if_index = ~0;
4479 vec_foreach (tkm, km->per_thread_data)
4482 pool_foreach (sa, tkm->sas, ({
4483 if (ikev2_sa_sw_if_match (sa, sw_if_index))
4484 vec_add1 (sa_vec, sa);
4488 vec_foreach (sap, sa_vec)
4490 ikev2_initiate_delete_ike_sa_internal (km->vlib_main, tkm, *sap, 0);
4492 vec_reset_length (sa_vec);
4497 pool_foreach (sa, km->sais, ({
4498 if (ikev2_sa_sw_if_match (sa, sw_if_index))
4499 vec_add1 (ispi_vec, sa->ispi);
4503 vec_foreach (ispi, ispi_vec)
4505 ikev2_del_sa_init_from_main (ispi);
4508 vec_free (ispi_vec);
4511 static clib_error_t *
4512 ikev2_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
4514 ikev2_main_t *km = &ikev2_main;
4521 pool_foreach (p, km->profiles, ({
4522 if (p->responder.sw_if_index == sw_if_index)
4523 ikev2_sa_del (p, sw_if_index);
4530 VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ikev2_sw_interface_add_del);
4533 ikev2_init (vlib_main_t * vm)
4535 ikev2_main_t *km = &ikev2_main;
4536 vlib_thread_main_t *tm = vlib_get_thread_main ();
4539 clib_memset (km, 0, sizeof (ikev2_main_t));
4540 km->vnet_main = vnet_get_main ();
4543 km->liveness_period = IKEV2_LIVENESS_PERIOD_CHECK;
4544 km->liveness_max_retries = IKEV2_LIVENESS_RETRIES;
4545 ikev2_crypto_init (km);
4547 mhash_init_vec_string (&km->profile_index_by_name, sizeof (uword));
4549 vec_validate_aligned (km->per_thread_data, tm->n_vlib_mains - 1,
4550 CLIB_CACHE_LINE_BYTES);
4551 for (thread_id = 0; thread_id < tm->n_vlib_mains; thread_id++)
4553 ikev2_main_per_thread_data_t *ptd =
4554 vec_elt_at_index (km->per_thread_data, thread_id);
4556 ptd->sa_by_rspi = hash_create (0, sizeof (uword));
4558 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
4559 ptd->evp_ctx = EVP_CIPHER_CTX_new ();
4560 ptd->hmac_ctx = HMAC_CTX_new ();
4562 EVP_CIPHER_CTX_init (&ptd->_evp_ctx);
4563 ptd->evp_ctx = &ptd->_evp_ctx;
4564 HMAC_CTX_init (&(ptd->_hmac_ctx));
4565 ptd->hmac_ctx = &ptd->_hmac_ctx;
4569 km->sa_by_ispi = hash_create (0, sizeof (uword));
4570 km->sw_if_indices = hash_create (0, 0);
4571 km->udp_ports = hash_create (0, sizeof (uword));
4573 udp_register_dst_port (vm, IKEV2_PORT, ikev2_node_ip4.index, 1);
4574 udp_register_dst_port (vm, IKEV2_PORT, ikev2_node_ip6.index, 0);
4575 udp_register_dst_port (vm, IKEV2_PORT_NATT, ikev2_node_ip4.index, 1);
4576 udp_register_dst_port (vm, IKEV2_PORT_NATT, ikev2_node_ip6.index, 0);
4578 vlib_punt_hdl_t punt_hdl = vlib_punt_client_register ("ikev2-ip4");
4579 vlib_punt_register (punt_hdl, ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0],
4581 ikev2_cli_reference ();
4583 km->log_level = IKEV2_LOG_ERROR;
4584 km->log_class = vlib_log_register_class ("ikev2", 0);
4589 VLIB_INIT_FUNCTION (ikev2_init) =
4591 .runs_after = VLIB_INITS("ipsec_init", "ipsec_punt_init"),
4596 ikev2_mngr_process_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * csa,
4599 ikev2_main_t *km = &ikev2_main;
4600 ikev2_profile_t *p = 0;
4601 vlib_main_t *vm = km->vlib_main;
4602 f64 now = vlib_time_now (vm);
4605 if (sa->profile_index != ~0)
4606 p = pool_elt_at_index (km->profiles, sa->profile_index);
4608 if (sa->is_initiator && p && csa->time_to_expiration
4609 && now > csa->time_to_expiration)
4611 if (!csa->is_expired || csa->rekey_retries > 0)
4613 ikev2_rekey_child_sa_internal (vm, sa, csa);
4614 csa->time_to_expiration = now + p->handover;
4615 csa->is_expired = 1;
4616 if (csa->rekey_retries == 0)
4618 csa->rekey_retries = 5;
4620 else if (csa->rekey_retries > 0)
4622 csa->rekey_retries--;
4623 ikev2_log_debug ("Rekeying Child SA 0x%x, retries left %d",
4624 csa->i_proposals->spi, csa->rekey_retries);
4625 if (csa->rekey_retries == 0)
4627 csa->rekey_retries = -1;
4634 csa->time_to_expiration = 0;
4635 ikev2_delete_child_sa_internal (vm, sa, csa);
4643 ipip_tunnel_t *ipip = NULL;
4644 u32 sw_if_index = sa->is_tun_itf_set ? sa->tun_itf : ~0;
4645 if (~0 == sw_if_index)
4647 ip46_address_t local_ip;
4648 ip46_address_t remote_ip;
4649 if (sa->is_initiator)
4651 local_ip = to_ip46 (ip_addr_version (&sa->iaddr),
4652 ip_addr_bytes (&sa->iaddr));
4653 remote_ip = to_ip46 (ip_addr_version (&sa->raddr),
4654 ip_addr_bytes (&sa->raddr));
4658 local_ip = to_ip46 (ip_addr_version (&sa->raddr),
4659 ip_addr_bytes (&sa->raddr));
4660 remote_ip = to_ip46 (ip_addr_version (&sa->iaddr),
4661 ip_addr_bytes (&sa->iaddr));
4665 ipip_tunnel_key_t key = {
4668 .transport = IPIP_TRANSPORT_IP4,
4673 ipip = ipip_tunnel_db_find (&key);
4676 sw_if_index = ipip->sw_if_index;
4682 vec_add1 (sas_in, csa->remote_sa_id);
4683 vlib_worker_thread_barrier_sync (vm);
4684 ipsec_tun_protect_update (sw_if_index, NULL, csa->local_sa_id, sas_in);
4685 ipsec_sa_unlock_id (ikev2_flip_alternate_sa_bit (csa->remote_sa_id));
4686 vlib_worker_thread_barrier_release (vm);
4693 ikev2_set_log_level (ikev2_log_level_t log_level)
4695 ikev2_main_t *km = &ikev2_main;
4697 if (log_level >= IKEV2_LOG_MAX)
4699 ikev2_log_error ("unknown logging level %d", log_level);
4703 km->log_level = log_level;
4708 ikev2_set_liveness_params (u32 period, u32 max_retries)
4710 ikev2_main_t *km = &ikev2_main;
4712 if (period == 0 || max_retries == 0)
4713 return clib_error_return (0, "invalid args");
4715 km->liveness_period = period;
4716 km->liveness_max_retries = max_retries;
4721 ikev2_mngr_process_ipsec_sa (ipsec_sa_t * ipsec_sa)
4723 ikev2_main_t *km = &ikev2_main;
4724 vlib_main_t *vm = km->vlib_main;
4725 ikev2_main_per_thread_data_t *tkm;
4726 ikev2_sa_t *fsa = 0;
4727 ikev2_profile_t *p = 0;
4728 ikev2_child_sa_t *fchild = 0;
4729 f64 now = vlib_time_now (vm);
4730 vlib_counter_t counts;
4732 /* Search for the SA and child SA */
4733 vec_foreach (tkm, km->per_thread_data)
4739 pool_foreach (sa, tkm->sas, ({
4740 fchild = ikev2_sa_get_child(sa, ipsec_sa->spi, IKEV2_PROTOCOL_ESP, 1);
4749 vlib_get_combined_counter (&ipsec_sa_counters,
4750 ipsec_sa->stat_index, &counts);
4752 if (fsa && fsa->profile_index != ~0 && fsa->is_initiator)
4753 p = pool_elt_at_index (km->profiles, fsa->profile_index);
4755 if (fchild && p && p->lifetime_maxdata)
4757 if (!fchild->is_expired && counts.bytes > p->lifetime_maxdata)
4759 fchild->time_to_expiration = now;
4765 ikev2_process_pending_sa_init_one (ikev2_main_t * km, ikev2_sa_t * sa)
4771 if (ip_address_is_zero (&sa->iaddr))
4773 p = pool_elt_at_index (km->profiles, sa->profile_index);
4774 if (!ikev2_get_if_address (p->responder.sw_if_index,
4775 ip_addr_version (&p->responder.addr),
4779 /* update NAT detection payload */
4781 ikev2_find_ike_notify_payload
4782 ((ike_header_t *) sa->last_sa_init_req_packet_data,
4783 IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP);
4787 ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa->ispi),
4788 clib_host_to_net_u64 (sa->rspi),
4790 clib_host_to_net_u16 (IKEV2_PORT));
4791 clib_memcpy_fast (np, nat_sha, vec_len (nat_sha));
4796 if (vlib_buffer_alloc (km->vlib_main, &bi0, 1) != 1)
4799 vlib_buffer_t *b = vlib_get_buffer (km->vlib_main, bi0);
4800 clib_memcpy_fast (vlib_buffer_get_current (b),
4801 sa->last_sa_init_req_packet_data,
4802 vec_len (sa->last_sa_init_req_packet_data));
4804 ikev2_send_ike (km->vlib_main, &sa->iaddr, &sa->raddr, bi0,
4805 vec_len (sa->last_sa_init_req_packet_data),
4806 ikev2_get_port (sa), IKEV2_PORT, sa->sw_if_index);
4810 ikev2_process_pending_sa_init (ikev2_main_t * km)
4817 hash_foreach (ispi, sai, km->sa_by_ispi,
4819 sa = pool_elt_at_index (km->sais, sai);
4820 if (sa->init_response_received)
4823 ikev2_process_pending_sa_init_one (km, sa);
4829 ikev2_send_informational_request (ikev2_sa_t * sa)
4831 ikev2_main_t *km = &ikev2_main;
4832 ip_address_t *src, *dst;
4839 bi0 = ikev2_get_new_ike_header_buff (km->vlib_main, &b0);
4842 ikev2_log_error ("buffer alloc failure");
4846 ike0 = vlib_buffer_get_current (b0);
4847 ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL;
4848 ike0->ispi = clib_host_to_net_u64 (sa->ispi);
4849 ike0->rspi = clib_host_to_net_u64 (sa->rspi);
4850 ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id + 1);
4852 sa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid);
4853 len = ikev2_generate_message (b0, sa, ike0, 0, 0);
4858 len = ikev2_insert_non_esp_marker (ike0, len);
4860 if (sa->is_initiator)
4871 dp = sa->dst_port ? sa->dst_port : ikev2_get_port (sa);
4872 ikev2_send_ike (km->vlib_main, src, dst, bi0, len, ikev2_get_port (sa), dp,
4877 ikev2_disable_dpd (void)
4879 ikev2_main_t *km = &ikev2_main;
4880 km->dpd_disabled = 1;
4883 static_always_inline int
4884 ikev2_mngr_process_responder_sas (ikev2_sa_t * sa)
4886 ikev2_main_t *km = &ikev2_main;
4887 vlib_main_t *vm = km->vlib_main;
4889 if (!sa->keys_generated)
4892 if (sa->liveness_retries >= km->liveness_max_retries)
4895 f64 now = vlib_time_now (vm);
4897 if (sa->liveness_period_check < now)
4899 sa->liveness_retries++;
4900 sa->liveness_period_check = now + km->liveness_period;
4901 ikev2_send_informational_request (sa);
4907 ikev2_mngr_process_fn (vlib_main_t * vm, vlib_node_runtime_t * rt,
4910 ikev2_main_t *km = &ikev2_main;
4911 ipsec_main_t *im = &ipsec_main;
4913 ikev2_child_sa_t *c;
4918 vlib_process_wait_for_event_or_clock (vm, 2);
4919 vlib_process_get_events (vm, NULL);
4921 /* process ike child sas */
4922 ikev2_main_per_thread_data_t *tkm;
4923 vec_foreach (tkm, km->per_thread_data)
4926 u32 *to_be_deleted = 0;
4929 pool_foreach (sa, tkm->sas, ({
4930 ikev2_child_sa_t *c;
4933 if (sa->state != IKEV2_STATE_AUTHENTICATED)
4936 if (sa->old_remote_id_present && 0 > sa->old_id_expiration)
4938 sa->old_remote_id_present = 0;
4942 sa->old_id_expiration -= 1;
4944 vec_foreach (c, sa->childs)
4945 ikev2_mngr_process_child_sa(sa, c, del_old_ids);
4947 if (!km->dpd_disabled && ikev2_mngr_process_responder_sas (sa))
4948 vec_add1 (to_be_deleted, sa - tkm->sas);
4952 vec_foreach (sai, to_be_deleted)
4954 sa = pool_elt_at_index (tkm->sas, sai[0]);
4955 u8 reinitiate = (sa->is_initiator && sa->profile_index != ~0);
4956 vec_foreach (c, sa->childs)
4958 ikev2_delete_tunnel_interface (km->vnet_main, sa, c);
4959 ikev2_sa_del_child_sa (sa, c);
4961 ikev2_sa_free_all_vec (sa);
4962 hash_unset (tkm->sa_by_rspi, sa->rspi);
4963 pool_put (tkm->sas, sa);
4967 p = pool_elt_at_index (km->profiles, sa->profile_index);
4970 ikev2_initiate_sa_init (vm, p->name);
4974 vec_free (to_be_deleted);
4977 /* process ipsec sas */
4980 pool_foreach (sa, im->sad, ({
4981 ikev2_mngr_process_ipsec_sa(sa);
4985 ikev2_process_pending_sa_init (km);
4991 VLIB_REGISTER_NODE (ikev2_mngr_process_node, static) = {
4992 .function = ikev2_mngr_process_fn,
4993 .type = VLIB_NODE_TYPE_PROCESS,
4995 "ikev2-manager-process",
4998 VLIB_PLUGIN_REGISTER () = {
4999 .version = VPP_BUILD_VER,
5000 .description = "Internet Key Exchange (IKEv2) Protocol",
5005 * fd.io coding-style-patch-verification: ON
5008 * eval: (c-set-style "gnu")