#include <plugins/ikev2/ikev2.h>
#include <plugins/ikev2/ikev2_priv.h>
#include <openssl/sha.h>
+#include <vnet/ipsec/ipsec_punt.h>
+
+#define IKEV2_LIVENESS_RETRIES 3
+#define IKEV2_LIVENESS_PERIOD_CHECK 30
ikev2_main_t ikev2_main;
#define ikev2_set_state(sa, v) do { \
(sa)->state = v; \
- clib_warning("sa state changed to " #v); \
+ ikev2_elog_sa_state("ispi %lx SA state changed to " #v, sa->ispi); \
} while(0);
typedef struct
IKEV2_N_NEXT,
} ikev2_next_t;
+typedef u32 ikev2_non_esp_marker;
+
+static_always_inline u16
+ikev2_get_port (ikev2_sa_t * sa)
+{
+ return sa->natt ? IKEV2_PORT_NATT : IKEV2_PORT;
+}
+
+static_always_inline int
+ikev2_insert_non_esp_marker (ike_header_t * ike, int len)
+{
+ memmove ((u8 *) ike + sizeof (ikev2_non_esp_marker), ike, len);
+ clib_memset (ike, 0, sizeof (ikev2_non_esp_marker));
+ return len + sizeof (ikev2_non_esp_marker);
+}
+
static ikev2_sa_transform_t *
ikev2_find_transform_data (ikev2_sa_transform_t * t)
{
if (prot_id == IKEV2_PROTOCOL_IKE)
{
mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_ENCR) |
- (1 << IKEV2_TRANSFORM_TYPE_PRF) |
- (1 << IKEV2_TRANSFORM_TYPE_INTEG) | (1 << IKEV2_TRANSFORM_TYPE_DH);
- optional_bitmap = mandatory_bitmap;
+ (1 << IKEV2_TRANSFORM_TYPE_PRF) | (1 << IKEV2_TRANSFORM_TYPE_DH);
+ optional_bitmap = mandatory_bitmap | (1 << IKEV2_TRANSFORM_TYPE_INTEG);
}
else if (prot_id == IKEV2_PROTOCOL_ESP)
{
}
}
- clib_warning ("bitmap is %x mandatory is %x optional is %x",
- bitmap, mandatory_bitmap, optional_bitmap);
-
if ((bitmap & mandatory_bitmap) == mandatory_bitmap &&
(bitmap & ~optional_bitmap) == 0)
{
if (!t)
{
- clib_warning ("unknown dh data group %u (data len %u)", sa->dh_group,
- vec_len (sa->i_dh_data));
sa->dh_group = IKEV2_TRANSFORM_DH_TYPE_NONE;
return;
}
ikev2_sa_transform_t *t = 0, *t2;
ikev2_main_t *km = &ikev2_main;
-
/*move some data to the new SA */
#define _(A) ({void* __tmp__ = (A); (A) = 0; __tmp__;})
sa->i_nonce = _(sai->i_nonce);
sa->raddr.as_u32 = sai->raddr.as_u32;
sa->is_initiator = sai->is_initiator;
sa->i_id.type = sai->i_id.type;
+ sa->r_id.type = sai->r_id.type;
sa->profile_index = sai->profile_index;
- sa->is_profile_index_set = sai->is_profile_index_set;
+ sa->tun_itf = sai->tun_itf;
+ sa->is_tun_itf_set = sai->is_tun_itf_set;
sa->i_id.data = _(sai->i_id.data);
+ sa->r_id.data = _(sai->r_id.data);
sa->i_auth.method = sai->i_auth.method;
sa->i_auth.hex = sai->i_auth.hex;
sa->i_auth.data = _(sai->i_auth.data);
sa->i_auth.key = _(sai->i_auth.key);
sa->last_sa_init_req_packet_data = _(sai->last_sa_init_req_packet_data);
sa->childs = _(sai->childs);
+ sa->udp_encap = sai->udp_encap;
+ sa->ipsec_over_udp_port = sai->ipsec_over_udp_port;
+ sa->dst_port = sai->dst_port;
+ sa->sw_if_index = sai->sw_if_index;
#undef _
if (!t)
{
- clib_warning ("unknown dh data group %u (data len %u)", sa->dh_group,
- vec_len (sa->i_dh_data));
sa->dh_group = IKEV2_TRANSFORM_DH_TYPE_NONE;
return;
}
/* calculate SKEYSEED = prf(Ni | Nr, g^ir) */
u8 *skeyseed = 0;
u8 *s = 0;
- u16 integ_key_len = 0;
+ u16 integ_key_len = 0, salt_len = 0;
ikev2_sa_transform_t *tr_encr, *tr_prf, *tr_integ;
tr_encr =
ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR);
if (tr_integ)
integ_key_len = tr_integ->key_len;
+ else
+ salt_len = sizeof (u32);
vec_append (s, sa->i_nonce);
vec_append (s, sa->r_nonce);
int len = tr_prf->key_trunc + /* SK_d */
integ_key_len * 2 + /* SK_ai, SK_ar */
tr_encr->key_len * 2 + /* SK_ei, SK_er */
- tr_prf->key_len * 2; /* SK_pi, SK_pr */
+ tr_prf->key_len * 2 + /* SK_pi, SK_pr */
+ salt_len * 2;
keymat = ikev2_calc_prfplus (tr_prf, skeyseed, s, len);
vec_free (skeyseed);
}
/* SK_ei */
- sa->sk_ei = vec_new (u8, tr_encr->key_len);
- clib_memcpy_fast (sa->sk_ei, keymat + pos, tr_encr->key_len);
- pos += tr_encr->key_len;
+ sa->sk_ei = vec_new (u8, tr_encr->key_len + salt_len);
+ clib_memcpy_fast (sa->sk_ei, keymat + pos, tr_encr->key_len + salt_len);
+ pos += tr_encr->key_len + salt_len;
/* SK_er */
- sa->sk_er = vec_new (u8, tr_encr->key_len);
- clib_memcpy_fast (sa->sk_er, keymat + pos, tr_encr->key_len);
- pos += tr_encr->key_len;
+ sa->sk_er = vec_new (u8, tr_encr->key_len + salt_len);
+ clib_memcpy_fast (sa->sk_er, keymat + pos, tr_encr->key_len + salt_len);
+ pos += tr_encr->key_len + salt_len;
/* SK_pi */
sa->sk_pi = vec_new (u8, tr_prf->key_len);
vec_free (keymat);
}
+static_always_inline u8 *
+ikev2_compute_nat_sha1 (u64 ispi, u64 rspi, u32 ip, u16 port)
+{
+ /* ispi, rspi, ip, port */
+ u8 buf[8 + 8 + 4 + 2];
+ u8 *res = vec_new (u8, 20);
+
+ clib_memcpy_fast (&buf[0], &ispi, sizeof (ispi));
+ clib_memcpy_fast (&buf[8], &rspi, sizeof (rspi));
+ clib_memcpy_fast (&buf[8 + 8], &ip, sizeof (ip));
+ clib_memcpy_fast (&buf[8 + 8 + 4], &port, sizeof (port));
+ SHA1 (buf, sizeof (buf), res);
+ return res;
+}
+
static void
ikev2_process_sa_init_req (vlib_main_t * vm, ikev2_sa_t * sa,
- ike_header_t * ike)
+ ike_header_t * ike, udp_header_t * udp)
{
int p = 0;
u32 len = clib_net_to_host_u32 (ike->length);
u8 payload = ike->nextpayload;
- clib_warning ("ispi %lx rspi %lx nextpayload %x version %x "
- "exchange %x flags %x msgid %x length %u",
- clib_net_to_host_u64 (ike->ispi),
- clib_net_to_host_u64 (ike->rspi),
- payload, ike->version,
- ike->exchange, ike->flags,
- clib_net_to_host_u32 (ike->msgid), len);
+ ikev2_elog_exchange ("ispi %lx rspi %lx IKE_INIT request received "
+ "from %d.%d.%d.%d",
+ clib_net_to_host_u64 (ike->ispi),
+ clib_net_to_host_u64 (ike->rspi), sa->iaddr.as_u32);
sa->ispi = clib_net_to_host_u64 (ike->ispi);
else if (payload == IKEV2_PAYLOAD_NOTIFY)
{
ikev2_notify_t *n = ikev2_parse_notify_payload (ikep);
+ if (n->msg_type == IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP)
+ {
+ u8 *src_sha =
+ ikev2_compute_nat_sha1 (clib_net_to_host_u64 (ike->ispi), 0,
+ clib_net_to_host_u32 (sa->
+ iaddr.as_u32),
+ udp->src_port);
+ if (clib_memcmp (src_sha, n->data, vec_len (src_sha)))
+ {
+ sa->natt = 1;
+ ikev2_elog_uint (IKEV2_LOG_DEBUG, "ispi %lx initiator"
+ " behind NAT", sa->ispi);
+ }
+ vec_free (src_sha);
+ }
+ else if (n->msg_type ==
+ IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP)
+ {
+ u8 *dst_sha =
+ ikev2_compute_nat_sha1 (clib_net_to_host_u64 (ike->ispi), 0,
+ clib_net_to_host_u32 (sa->
+ raddr.as_u32),
+ udp->dst_port);
+ if (clib_memcmp (dst_sha, n->data, vec_len (dst_sha)))
+ {
+ sa->natt = 1;
+ ikev2_elog_uint (IKEV2_LOG_DEBUG, "ispi %lx responder"
+ " (self) behind NAT", sa->ispi);
+ }
+ vec_free (dst_sha);
+ }
vec_free (n);
}
else if (payload == IKEV2_PAYLOAD_VENDOR)
}
else
{
- clib_warning ("unknown payload %u flags %x length %u", payload,
- ikep->flags, plen);
+ ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
+ payload);
if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
{
ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
static void
ikev2_process_sa_init_resp (vlib_main_t * vm, ikev2_sa_t * sa,
- ike_header_t * ike)
+ ike_header_t * ike, udp_header_t * udp)
{
int p = 0;
u32 len = clib_net_to_host_u32 (ike->length);
u8 payload = ike->nextpayload;
- clib_warning ("ispi %lx rspi %lx nextpayload %x version %x "
- "exchange %x flags %x msgid %x length %u",
- clib_net_to_host_u64 (ike->ispi),
- clib_net_to_host_u64 (ike->rspi),
- payload, ike->version,
- ike->exchange, ike->flags,
- clib_net_to_host_u32 (ike->msgid), len);
-
sa->ispi = clib_net_to_host_u64 (ike->ispi);
sa->rspi = clib_net_to_host_u64 (ike->rspi);
+ ikev2_elog_exchange ("ispi %lx rspi %lx IKE_INIT response received "
+ "from %d.%d.%d.%d", sa->ispi, sa->rspi,
+ sa->raddr.as_u32);
+
/* store whole IKE payload - needed for PSK auth */
vec_free (sa->last_sa_init_res_packet_data);
vec_add (sa->last_sa_init_res_packet_data, ike, len);
else if (payload == IKEV2_PAYLOAD_NOTIFY)
{
ikev2_notify_t *n = ikev2_parse_notify_payload (ikep);
+ if (n->msg_type == IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP)
+ {
+ u8 *src_sha = ikev2_compute_nat_sha1 (ike->ispi,
+ ike->rspi,
+ clib_net_to_host_u32
+ (sa->raddr.as_u32),
+ udp->src_port);
+ if (clib_memcmp (src_sha, n->data, vec_len (src_sha)))
+ {
+ ikev2_elog_uint (IKEV2_LOG_DEBUG, "ispi %lx responder"
+ " behind NAT, unsupported", sa->ispi);
+ }
+ vec_free (src_sha);
+ }
+ else if (n->msg_type ==
+ IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP)
+ {
+ u8 *dst_sha = ikev2_compute_nat_sha1 (ike->ispi,
+ ike->rspi,
+ sa->iaddr.as_u32,
+ udp->dst_port);
+ if (clib_memcmp (dst_sha, n->data, vec_len (dst_sha)))
+ {
+ sa->natt = 1;
+ ikev2_elog_uint (IKEV2_LOG_DEBUG, "ispi %lx initiator"
+ " (self) behind NAT", sa->ispi);
+ }
+ vec_free (dst_sha);
+ }
vec_free (n);
}
else if (payload == IKEV2_PAYLOAD_VENDOR)
}
else
{
- clib_warning ("unknown payload %u flags %x length %u", payload,
- ikep->flags, plen);
+ ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
+ payload);
if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
{
ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
static u8 *
ikev2_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike, u8 * payload)
{
+ ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
int p = 0;
- u8 last_payload = 0;
+ u8 last_payload = 0, *plaintext = 0;
u8 *hmac = 0;
u32 len = clib_net_to_host_u32 (ike->length);
ike_payload_header_t *ikep = 0;
u32 plen = 0;
ikev2_sa_transform_t *tr_integ;
+ ikev2_sa_transform_t *tr_encr;
tr_integ =
ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG);
+ tr_encr =
+ ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR);
+ int is_aead = tr_encr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_GCM_16;
+
+ if ((!sa->sk_ar || !sa->sk_ai) && !is_aead)
+ return 0;
while (p < len &&
*payload != IKEV2_PAYLOAD_NONE && last_payload != IKEV2_PAYLOAD_SK)
if (*payload == IKEV2_PAYLOAD_SK)
{
- clib_warning ("received IKEv2 payload SK, len %u", plen - 4);
last_payload = *payload;
}
else
{
- clib_warning ("unknown payload %u flags %x length %u", payload,
- ikep->flags, plen);
+ ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
+ *payload);
if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
{
sa->unsupported_cp = *payload;
if (last_payload != IKEV2_PAYLOAD_SK)
{
- clib_warning ("Last payload must be SK");
+ ikev2_elog_error ("Last payload must be SK");
return 0;
}
- hmac =
- ikev2_calc_integr (tr_integ, sa->is_initiator ? sa->sk_ar : sa->sk_ai,
- (u8 *) ike, len - tr_integ->key_trunc);
+ if (is_aead)
+ {
+ if (plen < sizeof (*ikep) + IKEV2_GCM_ICV_SIZE)
+ return 0;
- plen = plen - sizeof (*ikep) - tr_integ->key_trunc;
+ plen -= sizeof (*ikep) + IKEV2_GCM_ICV_SIZE;
+ u8 *aad = (u8 *) ike;
+ u32 aad_len = ikep->payload - aad;
+ u8 *tag = ikep->payload + plen;
- if (memcmp (hmac, &ikep->payload[plen], tr_integ->key_trunc))
+ plaintext = ikev2_decrypt_aead_data (ptd, sa, tr_encr, ikep->payload,
+ plen, aad, aad_len, tag);
+ }
+ else
{
- clib_warning ("message integrity check failed");
+ if (len < tr_integ->key_trunc)
+ return 0;
+
+ hmac =
+ ikev2_calc_integr (tr_integ, sa->is_initiator ? sa->sk_ar : sa->sk_ai,
+ (u8 *) ike, len - tr_integ->key_trunc);
+
+ if (plen < sizeof (*ikep) + tr_integ->key_trunc)
+ return 0;
+
+ plen = plen - sizeof (*ikep) - tr_integ->key_trunc;
+
+ if (memcmp (hmac, &ikep->payload[plen], tr_integ->key_trunc))
+ {
+ ikev2_elog_error ("message integrity check failed");
+ vec_free (hmac);
+ return 0;
+ }
vec_free (hmac);
- return 0;
+
+ plaintext = ikev2_decrypt_data (ptd, sa, tr_encr, ikep->payload, plen);
}
- vec_free (hmac);
- return ikev2_decrypt_data (sa, ikep->payload, plen);
+ return plaintext;
+}
+
+static_always_inline int
+ikev2_is_id_equal (ikev2_id_t * i1, ikev2_id_t * i2)
+{
+ if (i1->type != i2->type)
+ return 0;
+
+ if (vec_len (i1->data) != vec_len (i2->data))
+ return 0;
+
+ if (memcmp (i1->data, i2->data, vec_len (i1->data)))
+ return 0;
+
+ return 1;
}
static void
/* find old IKE SAs with the same authenticated identity */
/* *INDENT-OFF* */
pool_foreach (tmp, km->per_thread_data[thread_index].sas, ({
- if (tmp->i_id.type != sa->i_id.type ||
- vec_len(tmp->i_id.data) != vec_len(sa->i_id.data) ||
- memcmp(sa->i_id.data, tmp->i_id.data, vec_len(sa->i_id.data)))
+ if (!ikev2_is_id_equal (&tmp->i_id, &sa->i_id)
+ || !ikev2_is_id_equal(&tmp->r_id, &sa->r_id))
continue;
if (sa->rspi != tmp->rspi)
{
ikev2_child_sa_t *first_child_sa;
int p = 0;
- u32 len = clib_net_to_host_u32 (ike->length);
u8 payload = ike->nextpayload;
u8 *plaintext = 0;
-
ike_payload_header_t *ikep;
u32 plen;
- clib_warning ("ispi %lx rspi %lx nextpayload %x version %x "
- "exchange %x flags %x msgid %x length %u",
- clib_net_to_host_u64 (ike->ispi),
- clib_net_to_host_u64 (ike->rspi),
- payload, ike->version,
- ike->exchange, ike->flags,
- clib_net_to_host_u32 (ike->msgid), len);
+ ikev2_elog_exchange ("ispi %lx rspi %lx EXCHANGE_IKE_AUTH received "
+ "from %d.%d.%d.%d", clib_host_to_net_u64 (ike->ispi),
+ clib_host_to_net_u64 (ike->rspi),
+ sa->is_initiator ? sa->raddr.as_u32 : sa->
+ iaddr.as_u32);
ikev2_calc_keys (sa);
if (payload == IKEV2_PAYLOAD_SA) /* 33 */
{
- clib_warning ("received payload SA, len %u", plen - sizeof (*ikep));
if (sa->is_initiator)
{
ikev2_sa_free_proposal_vector (&first_child_sa->r_proposals);
sa->i_id.type = id->id_type;
vec_free (sa->i_id.data);
vec_add (sa->i_id.data, id->payload, plen - sizeof (*id));
-
- clib_warning ("received payload IDi, len %u id_type %u",
- plen - sizeof (*id), id->id_type);
}
else if (payload == IKEV2_PAYLOAD_IDR) /* 36 */
{
sa->r_id.type = id->id_type;
vec_free (sa->r_id.data);
vec_add (sa->r_id.data, id->payload, plen - sizeof (*id));
-
- clib_warning ("received payload IDr len %u id_type %u",
- plen - sizeof (*id), id->id_type);
}
else if (payload == IKEV2_PAYLOAD_AUTH) /* 39 */
{
vec_free (sa->i_auth.data);
vec_add (sa->i_auth.data, a->payload, plen - sizeof (*a));
}
-
- clib_warning ("received payload AUTH, len %u auth_type %u",
- plen - sizeof (*a), a->auth_method);
}
else if (payload == IKEV2_PAYLOAD_NOTIFY) /* 41 */
{
}
else if (payload == IKEV2_PAYLOAD_TSI) /* 44 */
{
- clib_warning ("received payload TSi, len %u",
- plen - sizeof (*ikep));
-
vec_free (first_child_sa->tsi);
first_child_sa->tsi = ikev2_parse_ts_payload (ikep);
}
else if (payload == IKEV2_PAYLOAD_TSR) /* 45 */
{
- clib_warning ("received payload TSr, len %u",
- plen - sizeof (*ikep));
-
vec_free (first_child_sa->tsr);
first_child_sa->tsr = ikev2_parse_ts_payload (ikep);
}
else
{
- clib_warning ("unknown payload %u flags %x length %u data %u",
- payload, ikep->flags, plen - 4,
- format_hex_bytes, ikep->payload, plen - 4);
+ ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
+ payload);
if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
{
ike_header_t * ike)
{
int p = 0;
- u32 len = clib_net_to_host_u32 (ike->length);
u8 payload = ike->nextpayload;
u8 *plaintext = 0;
-
ike_payload_header_t *ikep;
u32 plen;
- clib_warning ("ispi %lx rspi %lx nextpayload %x version %x "
- "exchange %x flags %x msgid %x length %u",
- clib_net_to_host_u64 (ike->ispi),
- clib_net_to_host_u64 (ike->rspi),
- payload, ike->version,
- ike->exchange, ike->flags,
- clib_net_to_host_u32 (ike->msgid), len);
+ sa->liveness_retries = 0;
+ ikev2_elog_exchange ("ispi %lx rspi %lx INFORMATIONAL received "
+ "from %d.%d.%d.%d", clib_host_to_net_u64 (ike->ispi),
+ clib_host_to_net_u64 (ike->rspi), sa->iaddr.as_u32);
plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload);
}
else
{
- clib_warning ("unknown payload %u flags %x length %u data %u",
- payload, ikep->flags, plen - 4,
- format_hex_bytes, ikep->payload, plen - 4);
-
+ ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
+ payload);
if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
{
sa->unsupported_cp = payload;
ike_header_t * ike)
{
int p = 0;
- u32 len = clib_net_to_host_u32 (ike->length);
u8 payload = ike->nextpayload;
u8 *plaintext = 0;
u8 rekeying = 0;
ikev2_sa_proposal_t *proposal = 0;
ikev2_child_sa_t *child_sa;
- clib_warning ("ispi %lx rspi %lx nextpayload %x version %x "
- "exchange %x flags %x msgid %x length %u",
- clib_net_to_host_u64 (ike->ispi),
- clib_net_to_host_u64 (ike->rspi),
- payload, ike->version,
- ike->exchange, ike->flags,
- clib_net_to_host_u32 (ike->msgid), len);
+ ikev2_elog_exchange ("ispi %lx rspi %lx CREATE_CHILD_SA received "
+ "from %d.%d.%d.%d", clib_host_to_net_u64 (ike->ispi),
+ clib_host_to_net_u64 (ike->rspi), sa->raddr.as_u32);
plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload);
}
else
{
- clib_warning ("unknown payload %u flags %x length %u data %u",
- payload, ikep->flags, plen - 4,
- format_hex_bytes, ikep->payload, plen - 4);
-
+ ikev2_elog_uint (IKEV2_LOG_ERROR, "Unknown payload! type=%d",
+ payload);
if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL)
{
sa->unsupported_cp = payload;
- return;
+ goto cleanup_and_exit;
}
}
child_sa = ikev2_sa_get_child (sa, n->spi, n->protocol_id, 1);
if (!child_sa)
{
- clib_warning ("child SA spi %lx not found", n->spi);
+ ikev2_elog_uint (IKEV2_LOG_ERROR, "child SA spi %lx not found",
+ n->spi);
goto cleanup_and_exit;
}
vec_add2 (sa->rekey, rekey, 1);
ikev2_main_t *km = &ikev2_main;
ikev2_profile_t *p;
ikev2_ts_t *ts, *p_tsi, *p_tsr, *tsi = 0, *tsr = 0;
- ikev2_id_t *id;
+ ikev2_id_t *id_rem, *id_loc;
/* *INDENT-OFF* */
pool_foreach (p, km->profiles, ({
{
p_tsi = &p->loc_ts;
p_tsr = &p->rem_ts;
- id = &sa->r_id;
+ id_rem = &sa->r_id;
+ id_loc = &sa->i_id;
}
else
{
p_tsi = &p->rem_ts;
p_tsr = &p->loc_ts;
- id = &sa->i_id;
+ id_rem = &sa->i_id;
+ id_loc = &sa->r_id;
}
/* check id */
- if (p->rem_id.type != id->type ||
- vec_len(p->rem_id.data) != vec_len(id->data) ||
- memcmp(p->rem_id.data, id->data, vec_len(p->rem_id.data)))
+ if (!ikev2_is_id_equal (&p->rem_id, id_rem)
+ || !ikev2_is_id_equal (&p->loc_id, id_loc))
continue;
+ sa->profile_index = p - km->profiles;
+
vec_foreach(ts, sa->childs[0].tsi)
{
if (ikev2_ts_cmp(p_tsi, ts))
if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC ||
sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG))
{
- clib_warning ("unsupported authentication method %u",
- sa->i_auth.method);
+ ikev2_elog_uint (IKEV2_LOG_ERROR,
+ "unsupported authentication method %u",
+ sa->i_auth.method);
ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
return;
}
key_pad = format (0, "%s", IKEV2_KEY_PAD);
authmsg = ikev2_sa_generate_authmsg (sa, sa->is_initiator);
- ikev2_id_t *sa_id;
+ ikev2_id_t *id_rem, *id_loc;
ikev2_auth_t *sa_auth;
if (sa->is_initiator)
{
- sa_id = &sa->r_id;
+ id_rem = &sa->r_id;
+ id_loc = &sa->i_id;
sa_auth = &sa->r_auth;
}
else
{
- sa_id = &sa->i_id;
+ id_rem = &sa->i_id;
+ id_loc = &sa->r_id;
sa_auth = &sa->i_auth;
}
pool_foreach (p, km->profiles, ({
/* check id */
- if (p->rem_id.type != sa_id->type ||
- vec_len(p->rem_id.data) != vec_len(sa_id->data) ||
- memcmp(p->rem_id.data, sa_id->data, vec_len(p->rem_id.data)))
+ if (!ikev2_is_id_equal (&p->rem_id, id_rem)
+ || !ikev2_is_id_equal (&p->loc_id, id_loc))
continue;
if (sa_auth->method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
}));
/* *INDENT-ON* */
+ if (sel_p)
+ {
+ sa->udp_encap = sel_p->udp_encap;
+ sa->ipsec_over_udp_port = sel_p->ipsec_over_udp_port;
+ }
vec_free (authmsg);
if (sa->state == IKEV2_STATE_AUTHENTICATED)
vec_free (sa->r_id.data);
sa->r_id.data = vec_dup (sel_p->loc_id.data);
sa->r_id.type = sel_p->loc_id.type;
+ sa->i_id.data = vec_dup (sel_p->rem_id.data);
+ sa->i_id.type = sel_p->rem_id.type;
/* generate our auth data */
authmsg = ikev2_sa_generate_authmsg (sa, 1);
sa->childs[0].r_proposals =
ikev2_select_proposal (sa->childs[0].i_proposals,
IKEV2_PROTOCOL_ESP);
+
+ if (~0 != sel_p->tun_itf)
+ {
+ sa->is_tun_itf_set = 1;
+ sa->tun_itf = sel_p->tun_itf;
+ }
}
}
else
{
+ ikev2_elog_uint (IKEV2_LOG_ERROR, "authentication failed, no matching "
+ "profile found! ispi %lx", sa->ispi);
ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
}
vec_free (psk);
ikev2_sa_auth_init (ikev2_sa_t * sa)
{
ikev2_main_t *km = &ikev2_main;
- u8 *authmsg, *key_pad, *psk = 0, *auth = 0;
+ u8 *authmsg, *key_pad, *psk = 0;
ikev2_sa_transform_t *tr_prf;
tr_prf =
if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC ||
sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG))
{
- clib_warning ("unsupported authentication method %u",
- sa->i_auth.method);
+ ikev2_elog_uint (IKEV2_LOG_ERROR,
+ "unsupported authentication method %u",
+ sa->i_auth.method);
ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
return;
}
key_pad = format (0, "%s", IKEV2_KEY_PAD);
authmsg = ikev2_sa_generate_authmsg (sa, 0);
psk = ikev2_calc_prf (tr_prf, sa->i_auth.data, key_pad);
- auth = ikev2_calc_prf (tr_prf, psk, authmsg);
-
if (sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
{
vec_free (psk);
vec_free (key_pad);
- vec_free (auth);
vec_free (authmsg);
}
typedef struct
{
+ u32 sw_if_index;
u32 salt_local;
u32 salt_remote;
u32 local_sa_id;
ip46_address_t local_ip;
ip46_address_t remote_ip;
ipsec_key_t loc_ckey, rem_ckey, loc_ikey, rem_ikey;
+ u8 is_rekey;
+ u32 old_remote_sa_id;
+ u16 ipsec_over_udp_port;
+ u16 src_port;
+ u16 dst_port;
} ikev2_add_ipsec_tunnel_args_t;
static void
ikev2_add_tunnel_from_main (ikev2_add_ipsec_tunnel_args_t * a)
{
+ ikev2_main_t *km = &ikev2_main;
u32 sw_if_index;
- int rv;
+ int rv = 0;
+
+ if (~0 == a->sw_if_index)
+ {
+ /* no tunnel associated with the SA/profile - create a new one */
+ rv = ipip_add_tunnel (IPIP_TRANSPORT_IP4, ~0,
+ &a->local_ip, &a->remote_ip, 0,
+ TUNNEL_ENCAP_DECAP_FLAG_NONE, IP_DSCP_CS0,
+ TUNNEL_MODE_P2P, &sw_if_index);
+
+ if (rv == VNET_API_ERROR_IF_ALREADY_EXISTS)
+ {
+ if (hash_get (km->sw_if_indices, sw_if_index))
+ /* interface is managed by IKE; proceed with updating SAs */
+ rv = 0;
+ }
+ hash_set1 (km->sw_if_indices, sw_if_index);
+ }
+ else
+ {
+ sw_if_index = a->sw_if_index;
+ vnet_sw_interface_admin_up (vnet_get_main (), sw_if_index);
+ }
- rv = ipip_add_tunnel (IPIP_TRANSPORT_IP4, ~0,
- &a->local_ip, &a->remote_ip, 0, 0, &sw_if_index);
+ if (rv)
+ {
+ ikev2_elog_peers (IKEV2_LOG_ERROR, "installing ipip tunnel failed! "
+ "loc:%d.%d.%d.%d rem:%d.%d.%d.%d",
+ a->local_ip.ip4.as_u32, a->remote_ip.ip4.as_u32);
+ return;
+ }
+
+ u32 *sas_in = NULL;
+ vec_add1 (sas_in, a->remote_sa_id);
+ if (a->is_rekey)
+ {
+ ipsec_tun_protect_del (sw_if_index, NULL);
+
+ /* replace local SA immediately */
+ ipsec_sa_unlock_id (a->local_sa_id);
+
+ /* keep the old sa */
+ vec_add1 (sas_in, a->old_remote_sa_id);
+ }
rv |= ipsec_sa_add_and_lock (a->local_sa_id,
a->local_spi,
IPSEC_PROTOCOL_ESP, a->encr_type,
&a->loc_ckey, a->integ_type, &a->loc_ikey,
a->flags, 0, a->salt_local, &a->local_ip,
- &a->remote_ip, NULL);
+ &a->remote_ip, NULL, a->src_port, a->dst_port);
rv |= ipsec_sa_add_and_lock (a->remote_sa_id, a->remote_spi,
IPSEC_PROTOCOL_ESP, a->encr_type, &a->rem_ckey,
a->integ_type, &a->rem_ikey,
(a->flags | IPSEC_SA_FLAG_IS_INBOUND), 0,
a->salt_remote, &a->remote_ip,
- &a->local_ip, NULL);
+ &a->local_ip, NULL, a->ipsec_over_udp_port,
+ a->ipsec_over_udp_port);
- u32 *sas_in = NULL;
- vec_add1 (sas_in, a->remote_sa_id);
- rv |= ipsec_tun_protect_update (sw_if_index, a->local_sa_id, sas_in);
+ rv |= ipsec_tun_protect_update (sw_if_index, NULL, a->local_sa_id, sas_in);
}
static int
-ikev2_create_tunnel_interface (vnet_main_t * vnm,
+ikev2_create_tunnel_interface (vlib_main_t * vm,
u32 thread_index,
ikev2_sa_t * sa,
ikev2_child_sa_t * child, u32 sa_index,
- u32 child_index)
+ u32 child_index, u8 is_rekey)
{
ikev2_main_t *km = &ikev2_main;
ipsec_crypto_alg_t encr_type;
{
ip46_address_set_ip4 (&a.local_ip, &sa->iaddr);
ip46_address_set_ip4 (&a.remote_ip, &sa->raddr);
- proposals = child->i_proposals;
+ proposals = child->r_proposals;
a.local_spi = child->r_proposals[0].spi;
a.remote_spi = child->i_proposals[0].spi;
}
{
ip46_address_set_ip4 (&a.local_ip, &sa->raddr);
ip46_address_set_ip4 (&a.remote_ip, &sa->iaddr);
- proposals = child->r_proposals;
+ proposals = child->i_proposals;
a.local_spi = child->i_proposals[0].spi;
a.remote_spi = child->r_proposals[0].spi;
}
a.flags = IPSEC_SA_FLAG_USE_ANTI_REPLAY;
+ if (sa->udp_encap)
+ {
+ a.flags |= IPSEC_SA_FLAG_IS_TUNNEL;
+ a.flags |= IPSEC_SA_FLAG_UDP_ENCAP;
+ }
+ if (sa->natt)
+ a.flags |= IPSEC_SA_FLAG_UDP_ENCAP;
+ a.is_rekey = is_rekey;
tr = ikev2_sa_get_td_for_type (proposals, IKEV2_TRANSFORM_TYPE_ESN);
if (tr && tr->esn_type)
a.salt_remote = child->salt_er;
a.salt_local = child->salt_ei;
}
+ a.dst_port = a.src_port = sa->ipsec_over_udp_port;
}
else
{
a.salt_remote = child->salt_ei;
a.salt_local = child->salt_er;
}
+ a.dst_port = sa->natt ? sa->dst_port : sa->ipsec_over_udp_port;
+ a.src_port = sa->ipsec_over_udp_port;
}
- if (sa->is_profile_index_set)
+ if (sa->is_initiator && sa->profile_index != ~0)
p = pool_elt_at_index (km->profiles, sa->profile_index);
if (p && p->lifetime)
{
- child->time_to_expiration =
- vlib_time_now (vnm->vlib_main) + p->lifetime;
+ child->time_to_expiration = vlib_time_now (vm) + p->lifetime;
if (p->lifetime_jitter)
{
// This is not much better than rand(3), which Coverity warns
// however fast. If this perturbance to the expiration time
// needs to use a better RNG then we may need to use something
// like /dev/urandom which has significant overhead.
- u32 rnd = (u32) (vlib_time_now (vnm->vlib_main) * 1e6);
+ u32 rnd = (u32) (vlib_time_now (vm) * 1e6);
rnd = random_u32 (&rnd);
child->time_to_expiration += 1 + (rnd % p->lifetime_jitter);
}
if (thread_index & 0xffffffc0)
- clib_warning ("error: thread index exceeds max range 0x3f!");
+ ikev2_elog_error ("error: thread index exceeds max range 0x3f!");
if (child_index & 0xfffff000 || sa_index & 0xfffff000)
- clib_warning ("error: sa/child index exceeds max range 0xfff!");
+ ikev2_elog_error ("error: sa/child index exceeds max range 0xfff!");
child->local_sa_id =
a.local_sa_id =
ikev2_mk_local_sa_id (sa_index, child_index, thread_index);
- child->remote_sa_id =
- a.remote_sa_id =
- ikev2_mk_remote_sa_id (sa_index, child_index, thread_index);
+
+ u32 remote_sa_id = ikev2_mk_remote_sa_id (sa_index, child_index,
+ thread_index);
+
+ if (is_rekey)
+ {
+ /* create a new remote SA ID to keep the old SA for a bit longer
+ * so the peer has some time to swap their SAs */
+
+ /* use most significat bit of child index part in id */
+ u32 mask = 0x800;
+ if (sa->current_remote_id_mask)
+ {
+ sa->old_remote_id = a.old_remote_sa_id = remote_sa_id | mask;
+ sa->current_remote_id_mask = 0;
+ }
+ else
+ {
+ sa->old_remote_id = a.old_remote_sa_id = remote_sa_id;
+ sa->current_remote_id_mask = mask;
+ remote_sa_id |= mask;
+ }
+ sa->old_id_expiration = 3.0;
+ sa->old_remote_id_present = 1;
+ }
+
+ child->remote_sa_id = a.remote_sa_id = remote_sa_id;
+
+ a.sw_if_index = (sa->is_tun_itf_set ? sa->tun_itf : ~0);
+ a.ipsec_over_udp_port = sa->ipsec_over_udp_port;
vl_api_rpc_call_main_thread (ikev2_add_tunnel_from_main,
(u8 *) & a, sizeof (a));
ip46_address_t remote_ip;
u32 remote_sa_id;
u32 local_sa_id;
+ u32 sw_if_index;
} ikev2_del_ipsec_tunnel_args_t;
+static_always_inline u32
+ikev2_flip_alternate_sa_bit (u32 id)
+{
+ u32 mask = 0x800;
+ if (mask & id)
+ return id & ~mask;
+ return id | mask;
+}
+
static void
ikev2_del_tunnel_from_main (ikev2_del_ipsec_tunnel_args_t * a)
{
- /* *INDENT-OFF* */
- ipip_tunnel_key_t key = {
- .src = a->local_ip,
- .dst = a->remote_ip,
- .transport = IPIP_TRANSPORT_IP4,
- .fib_index = 0,
- };
- ipip_tunnel_t *ipip;
- /* *INDENT-ON* */
+ ikev2_main_t *km = &ikev2_main;
+ ipip_tunnel_t *ipip = NULL;
+ u32 sw_if_index;
+
+ if (~0 == a->sw_if_index)
+ {
+ /* *INDENT-OFF* */
+ ipip_tunnel_key_t key = {
+ .src = a->local_ip,
+ .dst = a->remote_ip,
+ .transport = IPIP_TRANSPORT_IP4,
+ .fib_index = 0,
+ };
+ /* *INDENT-ON* */
- ipip = ipip_tunnel_db_find (&key);
+ ipip = ipip_tunnel_db_find (&key);
- if (ipip)
+ if (ipip)
+ {
+ sw_if_index = ipip->sw_if_index;
+ hash_unset (km->sw_if_indices, ipip->sw_if_index);
+ }
+ else
+ sw_if_index = ~0;
+ }
+ else
{
- ipsec_tun_protect_del (ipip->sw_if_index);
- ipsec_sa_unlock_id (a->remote_sa_id);
- ipsec_sa_unlock_id (a->local_sa_id);
- ipip_del_tunnel (ipip->sw_if_index);
+ sw_if_index = a->sw_if_index;
+ vnet_sw_interface_admin_down (vnet_get_main (), sw_if_index);
}
+
+ if (~0 != sw_if_index)
+ ipsec_tun_protect_del (sw_if_index, NULL);
+
+ ipsec_sa_unlock_id (a->remote_sa_id);
+ ipsec_sa_unlock_id (a->local_sa_id);
+ ipsec_sa_unlock_id (ikev2_flip_alternate_sa_bit (a->remote_sa_id));
+
+ if (ipip)
+ ipip_del_tunnel (ipip->sw_if_index);
}
static int
a.remote_sa_id = child->remote_sa_id;
a.local_sa_id = child->local_sa_id;
+ a.sw_if_index = (sa->is_tun_itf_set ? sa->tun_itf : ~0);
vl_api_rpc_call_main_thread (ikev2_del_tunnel_from_main, (u8 *) & a,
sizeof (a));
}
static u32
-ikev2_generate_message (ikev2_sa_t * sa, ike_header_t * ike, void *user)
+ikev2_generate_message (ikev2_sa_t * sa, ike_header_t * ike, void *user,
+ udp_header_t * udp)
{
v8 *integ = 0;
ike_payload_header_t *ph;
}
else
{
+ ASSERT (udp);
+
ike->rspi = clib_host_to_net_u64 (sa->rspi);
ikev2_payload_add_sa (chain, sa->r_proposals);
ikev2_payload_add_ke (chain, sa->dh_group, sa->r_dh_data);
ikev2_payload_add_nonce (chain, sa->r_nonce);
+
+ u8 *nat_detection_sha1 =
+ ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa->ispi),
+ clib_host_to_net_u64 (sa->rspi),
+ clib_host_to_net_u32 (sa->raddr.as_u32),
+ udp->dst_port);
+ ikev2_payload_add_notify (chain,
+ IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP,
+ nat_detection_sha1);
+ vec_free (nat_detection_sha1);
+ nat_detection_sha1 =
+ ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa->ispi),
+ clib_host_to_net_u64 (sa->rspi),
+ sa->iaddr.as_u32, udp->src_port);
+ ikev2_payload_add_notify (chain,
+ IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP,
+ nat_detection_sha1);
+ vec_free (nat_detection_sha1);
}
}
else if (ike->exchange == IKEV2_EXCHANGE_IKE_AUTH)
if (sa->state == IKEV2_STATE_AUTHENTICATED)
{
ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
+ ikev2_payload_add_id (chain, &sa->i_id, IKEV2_PAYLOAD_IDI);
ikev2_payload_add_auth (chain, &sa->r_auth);
ikev2_payload_add_sa (chain, sa->childs[0].r_proposals);
ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
else if (sa->state == IKEV2_STATE_SA_INIT)
{
ikev2_payload_add_id (chain, &sa->i_id, IKEV2_PAYLOAD_IDI);
+ ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR);
ikev2_payload_add_auth (chain, &sa->i_auth);
ikev2_payload_add_sa (chain, sa->childs[0].i_proposals);
ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI);
ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR);
+ ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_INITIAL_CONTACT,
+ 0);
}
else
{
}
else
{
- if (sa->rekey)
+ if (vec_len (sa->rekey) > 0)
{
ikev2_payload_add_sa (chain, sa->rekey[0].r_proposal);
ikev2_payload_add_nonce (chain, sa->r_nonce);
}
else
{
-
+ ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
ikev2_payload_chain_add_padding (chain, tr_encr->block_size);
/* SK payload */
ph = (ike_payload_header_t *) & ike->payload[0];
ph->nextpayload = chain->first_payload_type;
ph->flags = 0;
- int enc_len = ikev2_encrypt_data (sa, chain->data, ph->payload);
- plen += enc_len;
-
- /* add space for hmac */
- plen += tr_integ->key_trunc;
+ int is_aead =
+ tr_encr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_GCM_16;
+ int iv_len = is_aead ? IKEV2_GCM_IV_SIZE : tr_encr->block_size;
+ plen += vec_len (chain->data) + iv_len;
+
+ /* add space for hmac/tag */
+ if (tr_integ)
+ plen += tr_integ->key_trunc;
+ else
+ plen += IKEV2_GCM_ICV_SIZE;
tlen += plen;
/* payload and total length */
ph->length = clib_host_to_net_u16 (plen);
ike->length = clib_host_to_net_u32 (tlen);
- /* calc integrity data for whole packet except hash itself */
- integ =
- ikev2_calc_integr (tr_integ, sa->is_initiator ? sa->sk_ai : sa->sk_ar,
- (u8 *) ike, tlen - tr_integ->key_trunc);
-
- clib_memcpy_fast (ike->payload + tlen - tr_integ->key_trunc -
- sizeof (*ike), integ, tr_integ->key_trunc);
+ if (is_aead)
+ {
+ ikev2_encrypt_aead_data (ptd, sa, tr_encr, chain->data,
+ ph->payload, (u8 *) ike,
+ sizeof (*ike) + sizeof (*ph),
+ ph->payload + plen - sizeof (*ph) -
+ IKEV2_GCM_ICV_SIZE);
+ }
+ else
+ {
+ ikev2_encrypt_data (ptd, sa, tr_encr, chain->data, ph->payload);
+ integ =
+ ikev2_calc_integr (tr_integ,
+ sa->is_initiator ? sa->sk_ai : sa->sk_ar,
+ (u8 *) ike, tlen - tr_integ->key_trunc);
+ clib_memcpy_fast (ike->payload + tlen - tr_integ->key_trunc -
+ sizeof (*ike), integ, tr_integ->key_trunc);
+ }
/* store whole IKE payload - needed for retransmit */
vec_free (sa->last_res_packet_data);
ike->length = tmp->length;
clib_memcpy_fast(ike->payload, tmp->payload,
clib_net_to_host_u32(tmp->length) - sizeof(*ike));
- clib_warning("IKE_SA_INIT retransmit from %U to %U",
- format_ip4_address, &raddr,
- format_ip4_address, &iaddr);
+ ikev2_elog_uint_peers (IKEV2_LOG_DEBUG,
+ "ispi %lx IKE_SA_INIT retransmit "
+ "from %d.%d.%d.%d to %d.%d.%d.%d",
+ ike->ispi,
+ raddr.as_u32, iaddr.as_u32);
return 1;
}
/* else ignore req */
else
{
- clib_warning("IKE_SA_INIT ignore from %U to %U",
- format_ip4_address, &raddr,
- format_ip4_address, &iaddr);
+ ikev2_elog_uint_peers (IKEV2_LOG_DEBUG,
+ "ispi %lx IKE_SA_INIT ignore "
+ "from %d.%d.%d.%d to %d.%d.%d.%d",
+ ike->ispi,
+ raddr.as_u32, iaddr.as_u32);
return -1;
}
}
ike->length = tmp->length;
clib_memcpy_fast (ike->payload, tmp->payload,
clib_net_to_host_u32 (tmp->length) - sizeof (*ike));
- clib_warning ("IKE msgid %u retransmit from %U to %U",
- msg_id,
- format_ip4_address, &sa->raddr,
- format_ip4_address, &sa->iaddr);
+ ikev2_elog_uint_peers (IKEV2_LOG_DEBUG, "IKE retransmit msgid %d",
+ msg_id, sa->raddr.as_u32, sa->iaddr.as_u32);
return 1;
}
/* old req ignore */
else
{
- clib_warning ("IKE msgid %u req ignore from %U to %U",
- msg_id,
- format_ip4_address, &sa->raddr,
- format_ip4_address, &sa->iaddr);
- return -1;
+ ikev2_elog_uint_peers (IKEV2_LOG_DEBUG, "IKE req ignore msgid %d",
+ msg_id, sa->raddr.as_u32, sa->iaddr.as_u32);
+ }
+ return -1;
+}
+
+static void
+ikev2_init_sa (vlib_main_t * vm, ikev2_sa_t * sa)
+{
+ ikev2_main_t *km = &ikev2_main;
+ sa->liveness_period_check = vlib_time_now (vm) + km->liveness_period;
+ sa->profile_index = ~0;
+}
+
+static void
+ikev2_del_sa_init_from_main (u64 * ispi)
+{
+ ikev2_main_t *km = &ikev2_main;
+ uword *p = hash_get (km->sa_by_ispi, *ispi);
+ if (p)
+ {
+ ikev2_sa_t *sai = pool_elt_at_index (km->sais, p[0]);
+ hash_unset (km->sa_by_ispi, sai->ispi);
+ ikev2_sa_free_all_vec (sai);
+ pool_put (km->sais, sai);
}
}
+static void
+ikev2_del_sa_init (u64 ispi)
+{
+ vl_api_rpc_call_main_thread (ikev2_del_sa_init_from_main, (u8 *) & ispi,
+ sizeof (ispi));
+}
static uword
ikev2_node_fn (vlib_main_t * vm,
ikev2_sa_t *sa0 = 0;
ikev2_sa_t sa; /* temporary store for SA */
int len = 0;
- int r;
+ int r, is_req = 0, has_non_esp_marker = 0;
/* speculatively enqueue b0 to the current next frame */
bi0 = from[0];
n_left_to_next -= 1;
b0 = vlib_get_buffer (vm, bi0);
- ike0 = vlib_buffer_get_current (b0);
- vlib_buffer_advance (b0, -sizeof (*udp0));
- udp0 = vlib_buffer_get_current (b0);
- vlib_buffer_advance (b0, -sizeof (*ip40));
- ip40 = vlib_buffer_get_current (b0);
+
+ if (b0->punt_reason == ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0])
+ {
+ u8 *ptr = vlib_buffer_get_current (b0);
+ ip40 = (ip4_header_t *) ptr;
+ ptr += sizeof (*ip40);
+ udp0 = (udp_header_t *) ptr;
+ ptr += sizeof (*udp0);
+ ike0 = (ike_header_t *) ptr;
+ }
+ else
+ {
+ ike0 = vlib_buffer_get_current (b0);
+ vlib_buffer_advance (b0, -sizeof (*udp0));
+ udp0 = vlib_buffer_get_current (b0);
+ vlib_buffer_advance (b0, -sizeof (*ip40));
+ ip40 = vlib_buffer_get_current (b0);
+ }
+
+ /* check for non-esp marker */
+ if (*((u32 *) ike0) == 0)
+ {
+ ike0 = (ike_header_t *) ((u8 *) ike0 + sizeof (u32));
+ has_non_esp_marker = 1;
+ }
if (ike0->version != IKE_VERSION_2)
{
{
sa0->raddr.as_u32 = ip40->dst_address.as_u32;
sa0->iaddr.as_u32 = ip40->src_address.as_u32;
+ sa0->dst_port = clib_net_to_host_u16 (udp0->src_port);
r = ikev2_retransmit_sa_init (ike0, sa0->iaddr,
sa0->raddr);
goto dispatch0;
}
- ikev2_process_sa_init_req (vm, sa0, ike0);
+ ikev2_process_sa_init_req (vm, sa0, ike0, udp0);
if (sa0->state == IKEV2_STATE_SA_INIT)
{
if (sa0->state == IKEV2_STATE_SA_INIT
|| sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE)
{
- len = ikev2_generate_message (sa0, ike0, 0);
+ len = ikev2_generate_message (sa0, ike0, 0, udp0);
}
if (sa0->state == IKEV2_STATE_SA_INIT)
pool_get (km->per_thread_data[thread_index].sas,
sa0);
clib_memcpy_fast (sa0, &sa, sizeof (*sa0));
+ ikev2_init_sa (vm, sa0);
hash_set (km->
per_thread_data[thread_index].sa_by_rspi,
sa0->rspi,
}
else //received sa_init without initiator flag
{
- ikev2_process_sa_init_resp (vm, sa0, ike0);
+ sa0->raddr.as_u32 = ip40->src_address.as_u32;
+ sa0->iaddr.as_u32 = ip40->dst_address.as_u32;
+ ikev2_process_sa_init_resp (vm, sa0, ike0, udp0);
if (sa0->state == IKEV2_STATE_SA_INIT)
{
+ is_req = 1;
ike0->exchange = IKEV2_EXCHANGE_IKE_AUTH;
uword *p = hash_get (km->sa_by_ispi, ike0->ispi);
if (p)
ikev2_sa_t *sai =
pool_elt_at_index (km->sais, p[0]);
- ikev2_complete_sa_data (sa0, sai);
- ikev2_calc_keys (sa0);
- ikev2_sa_auth_init (sa0);
- len = ikev2_generate_message (sa0, ike0, 0);
+ if (clib_atomic_bool_cmp_and_swap
+ (&sai->init_response_received, 0, 1))
+ {
+ ikev2_complete_sa_data (sa0, sai);
+ ikev2_calc_keys (sa0);
+ ikev2_sa_auth_init (sa0);
+ len =
+ ikev2_generate_message (sa0, ike0, 0, udp0);
+ }
+ else
+ {
+ /* we've already processed sa-init response */
+ sa0->state = IKEV2_STATE_UNKNOWN;
+ }
}
}
goto dispatch0;
}
+ sa0->dst_port = clib_net_to_host_u16 (udp0->src_port);
ikev2_process_auth_req (vm, sa0, ike0);
ikev2_sa_auth (sa0);
if (sa0->state == IKEV2_STATE_AUTHENTICATED)
ikev2_initial_contact_cleanup (sa0);
ikev2_sa_match_ts (sa0);
if (sa0->state != IKEV2_STATE_TS_UNACCEPTABLE)
- ikev2_create_tunnel_interface (km->vnet_main,
- thread_index, sa0,
+ ikev2_create_tunnel_interface (vm, thread_index, sa0,
&sa0->childs[0],
- p[0], 0);
+ p[0], 0, 0);
}
if (sa0->is_initiator)
{
- uword *p = hash_get (km->sa_by_ispi, ike0->ispi);
- if (p)
- {
- ikev2_sa_t *sai =
- pool_elt_at_index (km->sais, p[0]);
- hash_unset (km->sa_by_ispi, sai->ispi);
- ikev2_sa_free_all_vec (sai);
- pool_put (km->sais, sai);
- }
+ ikev2_del_sa_init (ike0->ispi);
}
else
{
- len = ikev2_generate_message (sa0, ike0, 0);
+ len = ikev2_generate_message (sa0, ike0, 0, udp0);
}
}
}
}
}
}
- if (!sa0->is_initiator)
+ if (!(ike0->flags & IKEV2_HDR_FLAG_RESPONSE))
{
- len = ikev2_generate_message (sa0, ike0, 0);
+ ike0->flags |= IKEV2_HDR_FLAG_RESPONSE;
+ len = ikev2_generate_message (sa0, ike0, 0, udp0);
}
}
}
{
if (sa0->rekey[0].protocol_id != IKEV2_PROTOCOL_IKE)
{
+ if (sa0->childs)
+ ikev2_sa_free_all_child_sa (&sa0->childs);
ikev2_child_sa_t *child;
vec_add2 (sa0->childs, child, 1);
+ clib_memset (child, 0, sizeof (*child));
child->r_proposals = sa0->rekey[0].r_proposal;
child->i_proposals = sa0->rekey[0].i_proposal;
child->tsi = sa0->rekey[0].tsi;
child->tsr = sa0->rekey[0].tsr;
- ikev2_create_tunnel_interface (km->vnet_main,
- thread_index, sa0,
- child, p[0],
- child - sa0->childs);
+ ikev2_create_tunnel_interface (vm, thread_index,
+ sa0, child, p[0],
+ child - sa0->childs,
+ 1);
}
if (sa0->is_initiator)
{
- vec_del1 (sa0->rekey, 0);
+ vec_free (sa0->rekey);
}
else
{
- len = ikev2_generate_message (sa0, ike0, 0);
+ len = ikev2_generate_message (sa0, ike0, 0, udp0);
}
}
}
}
else
{
- clib_warning ("IKEv2 exchange %u packet received from %U to %U",
- ike0->exchange,
- format_ip4_address, ip40->src_address.as_u8,
- format_ip4_address, ip40->dst_address.as_u8);
+ ikev2_elog_uint_peers (IKEV2_LOG_WARNING, "IKEv2 exchange %d "
+ "received from %d.%d.%d.%d to %d.%d.%d.%d",
+ ike0->exchange,
+ ip40->src_address.as_u32,
+ ip40->dst_address.as_u32);
}
dispatch0:
ip40->dst_address.as_u32 = sa0->iaddr.as_u32;
ip40->src_address.as_u32 = sa0->raddr.as_u32;
}
+
+ if (is_req)
+ {
+ udp0->dst_port = udp0->src_port =
+ clib_net_to_host_u16 (ikev2_get_port (sa0));
+
+ if (udp0->dst_port == clib_net_to_host_u16 (IKEV2_PORT_NATT)
+ && sa0->natt)
+ {
+ if (!has_non_esp_marker)
+ len = ikev2_insert_non_esp_marker (ike0, len);
+ }
+ }
+ else
+ {
+ if (has_non_esp_marker)
+ len += sizeof (ikev2_non_esp_marker);
+
+ u16 tp = udp0->dst_port;
+ udp0->dst_port = udp0->src_port;
+ udp0->src_port = tp;
+ }
+
udp0->length =
clib_host_to_net_u16 (len + sizeof (udp_header_t));
udp0->checksum = 0;
return r;
}
- /* Integrity */
- error = 1;
- vec_foreach (td, km->supported_transforms)
- {
- if (td->type == IKEV2_TRANSFORM_TYPE_INTEG
- && td->integ_type == ts->integ_alg)
+ if (IKEV2_TRANSFORM_INTEG_TYPE_NONE != ts->integ_alg)
+ {
+ /* Integrity */
+ error = 1;
+ vec_foreach (td, km->supported_transforms)
{
- vec_add1 (proposal->transforms, *td);
- error = 0;
- break;
+ if (td->type == IKEV2_TRANSFORM_TYPE_INTEG
+ && td->integ_type == ts->integ_alg)
+ {
+ vec_add1 (proposal->transforms, *td);
+ error = 0;
+ break;
+ }
}
- }
- if (error)
- {
- clib_warning
- ("Didn't find any supported algorithm for IKEV2_TRANSFORM_TYPE_INTEG");
- r = clib_error_return (0, "Unsupported algorithm");
- return r;
+ if (error)
+ {
+ ikev2_elog_error
+ ("Didn't find any supported algorithm for IKEV2_TRANSFORM_TYPE_INTEG");
+ r = clib_error_return (0, "Unsupported algorithm");
+ return r;
+ }
}
/* PRF */
}
/* DH */
- if (is_ike || ts->dh_type != IKEV2_TRANSFORM_DH_TYPE_NONE)
+ if (is_ike)
{
error = 1;
vec_foreach (td, km->supported_transforms)
{
vec_add1 (proposal->transforms, *td);
error = 0;
- break;
}
}
if (error)
static void
ikev2_send_ike (vlib_main_t * vm, ip4_address_t * src, ip4_address_t * dst,
- u32 bi0, u32 len)
+ u32 bi0, u32 len, u16 src_port, u16 dst_port, u32 sw_if_index)
{
ip4_header_t *ip40;
udp_header_t *udp0;
ip40->protocol = IP_PROTOCOL_UDP;
ip40->dst_address.as_u32 = dst->as_u32;
ip40->src_address.as_u32 = src->as_u32;
- udp0->dst_port = clib_host_to_net_u16 (500);
- udp0->src_port = clib_host_to_net_u16 (500);
+ udp0->dst_port = clib_host_to_net_u16 (dst_port);
+ udp0->src_port = clib_host_to_net_u16 (src_port);
udp0->length = clib_host_to_net_u16 (len + sizeof (udp_header_t));
udp0->checksum = 0;
b0->current_length = len + sizeof (ip4_header_t) + sizeof (udp_header_t);
ip40->length = clib_host_to_net_u16 (b0->current_length);
ip40->checksum = ip4_header_checksum (ip40);
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0;
/* send the request */
f = vlib_get_frame_to_node (vm, ip4_lookup_node.index);
return 0;
}
-clib_error_t *
-ikev2_add_del_profile (vlib_main_t * vm, u8 * name, int is_add)
+static_always_inline vnet_api_error_t
+ikev2_register_udp_port (ikev2_profile_t * p, u16 port)
{
ikev2_main_t *km = &ikev2_main;
- ikev2_profile_t *p;
+ udp_dst_port_info_t *pi;
- if (is_add)
- {
- if (ikev2_profile_index_by_name (name))
- return clib_error_return (0, "policy %v already exists", name);
+ uword *v = hash_get (km->udp_ports, port);
+ pi = udp_get_dst_port_info (&udp_main, port, UDP_IP4);
- pool_get (km->profiles, p);
- clib_memset (p, 0, sizeof (*p));
- p->name = vec_dup (name);
- p->responder.sw_if_index = ~0;
- uword index = p - km->profiles;
- mhash_set_mem (&km->profile_index_by_name, name, &index, 0);
+ if (v)
+ {
+ /* IKE already uses this port, only increment reference counter */
+ ASSERT (pi);
+ v[0]++;
}
else
{
- p = ikev2_profile_index_by_name (name);
- if (!p)
+ if (pi)
+ return VNET_API_ERROR_UDP_PORT_TAKEN;
+
+ udp_register_dst_port (km->vlib_main, port,
+ ipsec4_tun_input_node.index, 1);
+ hash_set (km->udp_ports, port, 1);
+ }
+ p->ipsec_over_udp_port = port;
+ return 0;
+}
+
+static_always_inline void
+ikev2_unregister_udp_port (ikev2_profile_t * p)
+{
+ ikev2_main_t *km = &ikev2_main;
+ uword *v;
+
+ if (p->ipsec_over_udp_port == IPSEC_UDP_PORT_NONE)
+ return;
+
+ v = hash_get (km->udp_ports, p->ipsec_over_udp_port);
+ if (!v)
+ return;
+
+ v[0]--;
+
+ if (v[0] == 0)
+ {
+ udp_unregister_dst_port (km->vlib_main, p->ipsec_over_udp_port, 1);
+ hash_unset (km->udp_ports, p->ipsec_over_udp_port);
+ }
+
+ p->ipsec_over_udp_port = IPSEC_UDP_PORT_NONE;
+}
+
+static void
+ikev2_initiate_delete_ike_sa_internal (vlib_main_t * vm,
+ ikev2_main_per_thread_data_t * tkm,
+ ikev2_sa_t * sa)
+{
+ ikev2_main_t *km = &ikev2_main;
+ ip4_address_t *src, *dst;
+
+ /* Create the Initiator notification for IKE SA removal */
+ ike_header_t *ike0;
+ u32 bi0 = 0;
+ int len;
+
+ bi0 = ikev2_get_new_ike_header_buff (vm, &ike0);
+ if (!bi0)
+ {
+ ikev2_log_error ("buffer alloc failure");
+ return;
+ }
+
+ ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL;
+ ike0->ispi = clib_host_to_net_u64 (sa->ispi);
+ ike0->rspi = clib_host_to_net_u64 (sa->rspi);
+ vec_resize (sa->del, 1);
+ sa->del->protocol_id = IKEV2_PROTOCOL_IKE;
+ sa->del->spi = sa->ispi;
+ ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id + 1);
+ sa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid);
+ len = ikev2_generate_message (sa, ike0, 0, 0);
+
+ if (sa->is_initiator)
+ {
+ src = &sa->iaddr;
+ dst = &sa->raddr;
+ }
+ else
+ {
+ dst = &sa->iaddr;
+ src = &sa->raddr;
+ }
+
+ ikev2_send_ike (vm, src, dst, bi0, len,
+ ikev2_get_port (sa), sa->dst_port, 0);
+
+ /* delete local SA */
+ ikev2_child_sa_t *c;
+ vec_foreach (c, sa->childs)
+ ikev2_delete_tunnel_interface (km->vnet_main, sa, c);
+
+ u64 rspi = sa->rspi;
+ ikev2_sa_free_all_vec (sa);
+ uword *p = hash_get (tkm->sa_by_rspi, rspi);
+ if (p)
+ {
+ hash_unset (tkm->sa_by_rspi, rspi);
+ pool_put (tkm->sas, sa);
+ }
+}
+
+static void
+ikev2_cleanup_profile_sessions (ikev2_main_t * km, ikev2_profile_t * p)
+{
+ ikev2_main_per_thread_data_t *tkm;
+ ikev2_sa_t *sa;
+ u32 pi = p - km->profiles;
+ u32 *sai;
+ u32 *del_sai = 0;
+
+ vec_foreach (tkm, km->per_thread_data)
+ {
+ /* *INDENT-OFF* */
+ pool_foreach (sa, tkm->sas, ({
+ if (sa->profile_index != ~0 && pi == sa->profile_index)
+ vec_add1 (del_sai, sa - tkm->sas);
+ }));
+ /* *INDENT-ON* */
+
+ vec_foreach (sai, del_sai)
+ {
+ sa = pool_elt_at_index (tkm->sas, sai[0]);
+ ikev2_initiate_delete_ike_sa_internal (km->vlib_main, tkm, sa);
+ }
+
+ vec_reset_length (del_sai);
+ }
+
+ vec_free (del_sai);
+}
+
+clib_error_t *
+ikev2_add_del_profile (vlib_main_t * vm, u8 * name, int is_add)
+{
+ ikev2_main_t *km = &ikev2_main;
+ ikev2_profile_t *p;
+
+ if (is_add)
+ {
+ if (ikev2_profile_index_by_name (name))
+ return clib_error_return (0, "policy %v already exists", name);
+
+ pool_get (km->profiles, p);
+ clib_memset (p, 0, sizeof (*p));
+ p->name = vec_dup (name);
+ p->ipsec_over_udp_port = IPSEC_UDP_PORT_NONE;
+ p->responder.sw_if_index = ~0;
+ p->tun_itf = ~0;
+ uword index = p - km->profiles;
+ mhash_set_mem (&km->profile_index_by_name, name, &index, 0);
+ }
+ else
+ {
+ p = ikev2_profile_index_by_name (name);
+ if (!p)
return clib_error_return (0, "policy %v does not exists", name);
+ ikev2_unregister_udp_port (p);
+ ikev2_cleanup_profile_sessions (km, p);
+
vec_free (p->name);
pool_put (km->profiles, p);
mhash_unset (&km->profile_index_by_name, name, 0);
vec_add1 (p->auth.data, 0);
if (p->auth.key)
EVP_PKEY_free (p->auth.key);
- p->auth.key = ikev2_load_cert_file (auth_data);
+ p->auth.key = ikev2_load_cert_file (p->auth.data);
if (p->auth.key == NULL)
- return clib_error_return (0, "load cert '%s' failed", auth_data);
+ return clib_error_return (0, "load cert '%s' failed", p->auth.data);
}
return 0;
ikev2_set_profile_esp_transforms (vlib_main_t * vm, u8 * name,
ikev2_transform_encr_type_t crypto_alg,
ikev2_transform_integ_type_t integ_alg,
- ikev2_transform_dh_type_t dh_type,
u32 crypto_key_size)
{
ikev2_profile_t *p;
p->esp_ts.crypto_alg = crypto_alg;
p->esp_ts.integ_alg = integ_alg;
- p->esp_ts.dh_type = dh_type;
p->esp_ts.crypto_key_size = crypto_key_size;
return 0;
}
+clib_error_t *
+ikev2_set_profile_tunnel_interface (vlib_main_t * vm,
+ u8 * name, u32 sw_if_index)
+{
+ ikev2_profile_t *p;
+ clib_error_t *r;
+
+ p = ikev2_profile_index_by_name (name);
+
+ if (!p)
+ {
+ r = clib_error_return (0, "unknown profile %v", name);
+ return r;
+ }
+
+ p->tun_itf = sw_if_index;
+
+ return 0;
+}
+
+vnet_api_error_t
+ikev2_set_profile_ipsec_udp_port (vlib_main_t * vm, u8 * name, u16 port,
+ u8 is_set)
+{
+ ikev2_profile_t *p = ikev2_profile_index_by_name (name);
+ ikev2_main_t *km = &ikev2_main;
+ vnet_api_error_t rv = 0;
+ uword *v;
+
+ if (!p)
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ if (is_set)
+ {
+ if (p->ipsec_over_udp_port != IPSEC_UDP_PORT_NONE)
+ return VNET_API_ERROR_VALUE_EXIST;
+
+ rv = ikev2_register_udp_port (p, port);
+ }
+ else
+ {
+ v = hash_get (km->udp_ports, port);
+ if (!v)
+ return VNET_API_ERROR_IKE_NO_PORT;
+
+ if (p->ipsec_over_udp_port == IPSEC_UDP_PORT_NONE)
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ ikev2_unregister_udp_port (p);
+ }
+ return rv;
+}
+
+clib_error_t *
+ikev2_set_profile_udp_encap (vlib_main_t * vm, u8 * name)
+{
+ ikev2_profile_t *p = ikev2_profile_index_by_name (name);
+ clib_error_t *r;
+
+ if (!p)
+ {
+ r = clib_error_return (0, "unknown profile %v", name);
+ return r;
+ }
+
+ p->udp_encap = 1;
+ return 0;
+}
+
clib_error_t *
ikev2_set_profile_sa_lifetime (vlib_main_t * vm, u8 * name,
u64 lifetime, u32 jitter, u32 handover,
ip4_address_t *if_ip = ip_interface_address_get_address (lm, if_add);
bi0 = ikev2_get_new_ike_header_buff (vm, &ike0);
+ if (!bi0)
+ {
+ char *errmsg = "buffer alloc failure";
+ ikev2_log_error (errmsg);
+ return clib_error_return (0, errmsg);
+ }
/* Prepare the SA and the IKE payload */
ikev2_sa_t sa;
ikev2_sa_free_proposal_vector (&proposals);
sa.is_initiator = 1;
- sa.profile_index = km->profiles - p;
- sa.is_profile_index_set = 1;
+ sa.profile_index = p - km->profiles;
sa.state = IKEV2_STATE_SA_INIT;
+ sa.tun_itf = p->tun_itf;
+ sa.udp_encap = p->udp_encap;
+ sa.ipsec_over_udp_port = p->ipsec_over_udp_port;
+ sa.is_tun_itf_set = 1;
+ sa.initial_contact = 1;
+ sa.dst_port = IKEV2_PORT;
ikev2_generate_sa_init_data (&sa);
ikev2_payload_add_ke (chain, sa.dh_group, sa.i_dh_data);
ikev2_payload_add_nonce (chain, sa.i_nonce);
RAND_bytes ((u8 *) & sa.childs[0].i_proposals[0].spi,
sizeof (sa.childs[0].i_proposals[0].spi));
-
-
/* Add NAT detection notification messages (mandatory) */
- u8 nat_detection_source[8 + 8 + 4 + 2];
- u8 *nat_detection_sha1 = vec_new (u8, 20);
-
- u64 tmpspi = clib_host_to_net_u64 (sa.ispi);
- clib_memcpy_fast (&nat_detection_source[0], &tmpspi, sizeof (tmpspi));
- tmpspi = clib_host_to_net_u64 (sa.rspi);
- clib_memcpy_fast (&nat_detection_source[8], &tmpspi, sizeof (tmpspi));
- u16 tmpport = clib_host_to_net_u16 (500);
- clib_memcpy_fast (&nat_detection_source[8 + 8 + 4], &tmpport,
- sizeof (tmpport));
- u32 tmpip = clib_host_to_net_u32 (if_ip->as_u32);
- clib_memcpy_fast (&nat_detection_source[8 + 8], &tmpip, sizeof (tmpip));
- SHA1 (nat_detection_source, sizeof (nat_detection_source),
- nat_detection_sha1);
+ u8 *nat_detection_sha1 =
+ ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa.ispi),
+ clib_host_to_net_u64 (sa.rspi),
+ clib_host_to_net_u32 (if_ip->as_u32),
+ clib_host_to_net_u16 (IKEV2_PORT));
+
ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP,
nat_detection_sha1);
- tmpip = clib_host_to_net_u32 (p->responder.ip4.as_u32);
- clib_memcpy_fast (&nat_detection_source[8 + 8], &tmpip, sizeof (tmpip));
- SHA1 (nat_detection_source, sizeof (nat_detection_source),
- nat_detection_sha1);
+ vec_free (nat_detection_sha1);
+ nat_detection_sha1 =
+ ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa.ispi),
+ clib_host_to_net_u64 (sa.rspi),
+ clib_host_to_net_u32 (p->responder.ip4.as_u32),
+ clib_host_to_net_u16 (sa.dst_port));
ikev2_payload_add_notify (chain,
IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP,
nat_detection_sha1);
sa.raddr.as_u32 = p->responder.ip4.as_u32;
sa.i_id.type = p->loc_id.type;
sa.i_id.data = vec_dup (p->loc_id.data);
+ sa.r_id.type = p->rem_id.type;
+ sa.r_id.data = vec_dup (p->rem_id.data);
sa.i_auth.method = p->auth.method;
sa.i_auth.hex = p->auth.hex;
sa.i_auth.data = vec_dup (p->auth.data);
+ sa.sw_if_index = p->responder.sw_if_index;
vec_add (sa.childs[0].tsi, &p->loc_ts, 1);
vec_add (sa.childs[0].tsr, &p->rem_ts, 1);
+ ikev2_initial_contact_cleanup (&sa);
+
/* add SA to the pool */
ikev2_sa_t *sa0 = 0;
pool_get (km->sais, sa0);
clib_memcpy_fast (sa0, &sa, sizeof (*sa0));
hash_set (km->sa_by_ispi, sa0->ispi, sa0 - km->sais);
- ikev2_send_ike (vm, if_ip, &p->responder.ip4, bi0, len);
+ ikev2_send_ike (vm, if_ip, &p->responder.ip4, bi0, len,
+ IKEV2_PORT, sa.dst_port, sa.sw_if_index);
+ ikev2_elog_exchange ("ispi %lx rspi %lx IKEV2_EXCHANGE_SA_INIT sent to "
+ "%d.%d.%d.%d", clib_host_to_net_u64 (sa0->ispi), 0,
+ p->responder.ip4.as_u32);
}
return 0;
int len;
bi0 = ikev2_get_new_ike_header_buff (vm, &ike0);
-
+ if (!bi0)
+ {
+ ikev2_log_error ("buffer alloc failure");
+ return;
+ }
ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL;
ike0->ispi = clib_host_to_net_u64 (sa->ispi);
sa->del->spi = csa->i_proposals->spi;
ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id + 1);
sa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid);
- len = ikev2_generate_message (sa, ike0, 0);
-
- ikev2_send_ike (vm, &sa->iaddr, &sa->raddr, bi0, len);
+ len = ikev2_generate_message (sa, ike0, 0, 0);
+ if (sa->natt)
+ len = ikev2_insert_non_esp_marker (ike0, len);
+ ikev2_send_ike (vm, &sa->iaddr, &sa->raddr, bi0, len,
+ ikev2_get_port (sa), sa->dst_port, sa->sw_if_index);
/* delete local child SA */
ikev2_delete_tunnel_interface (km->vnet_main, sa, csa);
return r;
}
-
- /* Create the Initiator notification for IKE SA removal */
- {
- ike_header_t *ike0;
- u32 bi0 = 0;
- int len;
-
- bi0 = ikev2_get_new_ike_header_buff (vm, &ike0);
-
-
- ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL;
- ike0->ispi = clib_host_to_net_u64 (fsa->ispi);
- ike0->rspi = clib_host_to_net_u64 (fsa->rspi);
- vec_resize (fsa->del, 1);
- fsa->del->protocol_id = IKEV2_PROTOCOL_IKE;
- fsa->del->spi = ispi;
- ike0->msgid = clib_host_to_net_u32 (fsa->last_init_msg_id + 1);
- fsa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid);
- len = ikev2_generate_message (fsa, ike0, 0);
-
- ikev2_send_ike (vm, &fsa->iaddr, &fsa->raddr, bi0, len);
- }
-
-
- /* delete local SA */
- ikev2_child_sa_t *c;
- vec_foreach (c, fsa->childs)
- {
- ikev2_delete_tunnel_interface (km->vnet_main, fsa, c);
- ikev2_sa_del_child_sa (fsa, c);
- }
- ikev2_sa_free_all_vec (fsa);
- uword *p = hash_get (ftkm->sa_by_rspi, fsa->rspi);
- if (p)
- {
- hash_unset (ftkm->sa_by_rspi, fsa->rspi);
- pool_put (ftkm->sas, fsa);
- }
-
-
+ ikev2_initiate_delete_ike_sa_internal (vm, ftkm, fsa);
return 0;
}
u32 bi0 = 0;
int len;
-
bi0 = ikev2_get_new_ike_header_buff (vm, &ike0);
-
+ if (!bi0)
+ {
+ ikev2_log_error ("buffer alloc failure");
+ return;
+ }
ike0->version = IKE_VERSION_2;
ike0->flags = IKEV2_HDR_FLAG_INITIATOR;
RAND_bytes ((u8 *) & proposals[0].spi, sizeof (proposals[0].spi));
rekey->spi = proposals[0].spi;
rekey->ispi = csa->i_proposals->spi;
- len = ikev2_generate_message (sa, ike0, proposals);
- ikev2_send_ike (vm, &sa->iaddr, &sa->raddr, bi0, len);
+ len = ikev2_generate_message (sa, ike0, proposals, 0);
+ if (sa->natt)
+ len = ikev2_insert_non_esp_marker (ike0, len);
+ ikev2_send_ike (vm, &sa->iaddr, &sa->raddr, bi0, len,
+ ikev2_get_port (sa), ikev2_get_port (sa), sa->sw_if_index);
vec_free (proposals);
}
km->vnet_main = vnet_get_main ();
km->vlib_main = vm;
+ km->liveness_period = IKEV2_LIVENESS_PERIOD_CHECK;
+ km->liveness_max_retries = IKEV2_LIVENESS_RETRIES;
ikev2_crypto_init (km);
mhash_init_vec_string (&km->profile_index_by_name, sizeof (uword));
- vec_validate (km->per_thread_data, tm->n_vlib_mains - 1);
- for (thread_id = 0; thread_id < tm->n_vlib_mains - 1; thread_id++)
+ vec_validate_aligned (km->per_thread_data, tm->n_vlib_mains - 1,
+ CLIB_CACHE_LINE_BYTES);
+ for (thread_id = 0; thread_id < tm->n_vlib_mains; thread_id++)
{
- km->per_thread_data[thread_id].sa_by_rspi =
- hash_create (0, sizeof (uword));
+ ikev2_main_per_thread_data_t *ptd =
+ vec_elt_at_index (km->per_thread_data, thread_id);
+
+ ptd->sa_by_rspi = hash_create (0, sizeof (uword));
+
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ ptd->evp_ctx = EVP_CIPHER_CTX_new ();
+ ptd->hmac_ctx = HMAC_CTX_new ();
+#else
+ EVP_CIPHER_CTX_init (&ptd->_evp_ctx);
+ ptd->evp_ctx = &ptd->_evp_ctx;
+ HMAC_CTX_init (&(ptd->_hmac_ctx));
+ ptd->hmac_ctx = &ptd->_hmac_ctx;
+#endif
}
km->sa_by_ispi = hash_create (0, sizeof (uword));
+ km->sw_if_indices = hash_create (0, 0);
+ km->udp_ports = hash_create (0, sizeof (uword));
- udp_register_dst_port (vm, 500, ikev2_node.index, 1);
+ udp_register_dst_port (vm, IKEV2_PORT, ikev2_node.index, 1);
+ udp_register_dst_port (vm, IKEV2_PORT_NATT, ikev2_node.index, 1);
+ vlib_punt_hdl_t punt_hdl = vlib_punt_client_register ("ikev2");
+ vlib_punt_register (punt_hdl, ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0],
+ "ikev2");
ikev2_cli_reference ();
+ km->log_level = IKEV2_LOG_ERROR;
+ km->log_class = vlib_log_register_class ("ikev2", 0);
return 0;
}
/* *INDENT-OFF* */
VLIB_INIT_FUNCTION (ikev2_init) =
{
- .runs_after = VLIB_INITS("ipsec_init"),
+ .runs_after = VLIB_INITS("ipsec_init", "ipsec_punt_init"),
};
/* *INDENT-ON* */
-
static u8
-ikev2_mngr_process_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * csa)
+ikev2_mngr_process_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * csa,
+ u8 del_old_ids)
{
ikev2_main_t *km = &ikev2_main;
ikev2_profile_t *p = 0;
f64 now = vlib_time_now (vm);
u8 res = 0;
- if (sa->is_profile_index_set)
+ if (sa->profile_index != ~0)
p = pool_elt_at_index (km->profiles, sa->profile_index);
if (sa->is_initiator && p && csa->time_to_expiration
else if (csa->rekey_retries > 0)
{
csa->rekey_retries--;
- clib_warning ("Rekeying Child SA 0x%x, retries left %d",
- csa->i_proposals->spi, csa->rekey_retries);
+ ikev2_log_debug ("Rekeying Child SA 0x%x, retries left %d",
+ csa->i_proposals->spi, csa->rekey_retries);
if (csa->rekey_retries == 0)
{
csa->rekey_retries = -1;
csa->time_to_expiration = 0;
ikev2_delete_child_sa_internal (vm, sa, csa);
res |= 1;
+ return res;
+ }
+ }
+
+ if (del_old_ids)
+ {
+ ipip_tunnel_t *ipip = NULL;
+ u32 sw_if_index = sa->is_tun_itf_set ? sa->tun_itf : ~0;
+ if (~0 == sw_if_index)
+ {
+ ip46_address_t local_ip;
+ ip46_address_t remote_ip;
+ if (sa->is_initiator)
+ {
+ ip46_address_set_ip4 (&local_ip, &sa->iaddr);
+ ip46_address_set_ip4 (&remote_ip, &sa->raddr);
+ }
+ else
+ {
+ ip46_address_set_ip4 (&local_ip, &sa->raddr);
+ ip46_address_set_ip4 (&remote_ip, &sa->iaddr);
+ }
+
+ /* *INDENT-OFF* */
+ ipip_tunnel_key_t key = {
+ .src = local_ip,
+ .dst = remote_ip,
+ .transport = IPIP_TRANSPORT_IP4,
+ .fib_index = 0,
+ };
+ /* *INDENT-ON* */
+
+ ipip = ipip_tunnel_db_find (&key);
+
+ if (ipip)
+ sw_if_index = ipip->sw_if_index;
+ else
+ return res;
}
+
+ u32 *sas_in = NULL;
+ vec_add1 (sas_in, csa->remote_sa_id);
+ vlib_worker_thread_barrier_sync (vm);
+ ipsec_tun_protect_update (sw_if_index, NULL, csa->local_sa_id, sas_in);
+ ipsec_sa_unlock_id (ikev2_flip_alternate_sa_bit (csa->remote_sa_id));
+ vlib_worker_thread_barrier_release (vm);
}
return res;
}
+int
+ikev2_set_log_level (ikev2_log_level_t log_level)
+{
+ ikev2_main_t *km = &ikev2_main;
+
+ if (log_level >= IKEV2_LOG_MAX)
+ {
+ ikev2_log_error ("unknown logging level %d", log_level);
+ return -1;
+ }
+
+ km->log_level = log_level;
+ return 0;
+}
+
+clib_error_t *
+ikev2_set_liveness_params (u32 period, u32 max_retries)
+{
+ ikev2_main_t *km = &ikev2_main;
+
+ if (period == 0 || max_retries == 0)
+ return clib_error_return (0, "invalid args");
+
+ km->liveness_period = period;
+ km->liveness_max_retries = max_retries;
+ return 0;
+}
+
static void
ikev2_mngr_process_ipsec_sa (ipsec_sa_t * ipsec_sa)
{
vlib_get_combined_counter (&ipsec_sa_counters,
ipsec_sa->stat_index, &counts);
- if (fsa && fsa->is_profile_index_set)
+ if (fsa && fsa->profile_index != ~0 && fsa->is_initiator)
p = pool_elt_at_index (km->profiles, fsa->profile_index);
if (fchild && p && p->lifetime_maxdata)
}
}
+static void
+ikev2_process_pending_sa_init (ikev2_main_t * km)
+{
+ u32 sai;
+ u64 ispi;
+ ikev2_sa_t *sa;
+
+ /* *INDENT-OFF* */
+ hash_foreach (ispi, sai, km->sa_by_ispi,
+ ({
+ sa = pool_elt_at_index (km->sais, sai);
+ if (sa->init_response_received)
+ continue;
+
+ u32 bi0;
+ if (vlib_buffer_alloc (km->vlib_main, &bi0, 1) != 1)
+ return;
+
+ vlib_buffer_t * b = vlib_get_buffer (km->vlib_main, bi0);
+ clib_memcpy_fast (vlib_buffer_get_current (b),
+ sa->last_sa_init_req_packet_data,
+ vec_len (sa->last_sa_init_req_packet_data));
+ ikev2_send_ike (km->vlib_main, &sa->iaddr, &sa->raddr, bi0,
+ vec_len (sa->last_sa_init_req_packet_data),
+ ikev2_get_port (sa), IKEV2_PORT, sa->sw_if_index);
+ }));
+ /* *INDENT-ON* */
+}
+
static vlib_node_registration_t ikev2_mngr_process_node;
+static void
+ikev2_send_informational_request (ikev2_sa_t * sa)
+{
+ ikev2_main_t *km = &ikev2_main;
+ ip4_address_t *src, *dst;
+ ike_header_t *ike0;
+ u32 bi0 = 0;
+ u16 dp;
+ int len;
+
+ bi0 = ikev2_get_new_ike_header_buff (km->vlib_main, &ike0);
+ if (!bi0)
+ {
+ ikev2_log_error ("buffer alloc failure");
+ return;
+ }
+
+ ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL;
+ ike0->ispi = clib_host_to_net_u64 (sa->ispi);
+ ike0->rspi = clib_host_to_net_u64 (sa->rspi);
+ ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id + 1);
+ sa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid);
+ len = ikev2_generate_message (sa, ike0, 0, 0);
+ if (sa->natt)
+ len = ikev2_insert_non_esp_marker (ike0, len);
+
+ if (sa->is_initiator)
+ {
+ src = &sa->iaddr;
+ dst = &sa->raddr;
+ }
+ else
+ {
+ dst = &sa->iaddr;
+ src = &sa->raddr;
+ }
+
+ dp = sa->dst_port ? sa->dst_port : ikev2_get_port (sa);
+ ikev2_send_ike (km->vlib_main, src, dst, bi0, len, ikev2_get_port (sa), dp,
+ sa->sw_if_index);
+}
+
+static_always_inline int
+ikev2_mngr_process_responder_sas (ikev2_sa_t * sa)
+{
+ ikev2_main_t *km = &ikev2_main;
+ vlib_main_t *vm = km->vlib_main;
+
+ if (!sa->sk_ai || !sa->sk_ar)
+ return 0;
+
+ if (sa->liveness_retries >= km->liveness_max_retries)
+ return 1;
+
+ f64 now = vlib_time_now (vm);
+
+ if (sa->liveness_period_check < now)
+ {
+ sa->liveness_retries++;
+ sa->liveness_period_check = now + km->liveness_period;
+ ikev2_send_informational_request (sa);
+ }
+ return 0;
+}
+
static uword
ikev2_mngr_process_fn (vlib_main_t * vm, vlib_node_runtime_t * rt,
vlib_frame_t * f)
{
ikev2_main_t *km = &ikev2_main;
ipsec_main_t *im = &ipsec_main;
+ ikev2_profile_t *p;
+ ikev2_child_sa_t *c;
+ u32 *sai;
while (1)
{
vec_foreach (tkm, km->per_thread_data)
{
ikev2_sa_t *sa;
+ u32 *to_be_deleted = 0;
+
/* *INDENT-OFF* */
pool_foreach (sa, tkm->sas, ({
ikev2_child_sa_t *c;
+ u8 del_old_ids = 0;
+ if (sa->old_remote_id_present && 0 > sa->old_id_expiration)
+ {
+ sa->old_remote_id_present = 0;
+ del_old_ids = 1;
+ }
+ else
+ sa->old_id_expiration -= 1;
+
vec_foreach (c, sa->childs)
{
- req_sent |= ikev2_mngr_process_child_sa(sa, c);
+ req_sent |= ikev2_mngr_process_child_sa(sa, c, del_old_ids);
}
+
+ if (ikev2_mngr_process_responder_sas (sa))
+ vec_add1 (to_be_deleted, sa - tkm->sas);
}));
/* *INDENT-ON* */
+
+ vec_foreach (sai, to_be_deleted)
+ {
+ sa = pool_elt_at_index (tkm->sas, sai[0]);
+ u8 reinitiate = (sa->is_initiator && sa->profile_index != ~0);
+ vec_foreach (c, sa->childs)
+ {
+ ikev2_delete_tunnel_interface (km->vnet_main, sa, c);
+ ikev2_sa_del_child_sa (sa, c);
+ }
+ ikev2_sa_free_all_vec (sa);
+ hash_unset (tkm->sa_by_rspi, sa->rspi);
+ pool_put (tkm->sas, sa);
+
+ if (reinitiate)
+ {
+ p = pool_elt_at_index (km->profiles, sa->profile_index);
+ if (p)
+ {
+ ikev2_initiate_sa_init (vm, p->name);
+ }
+ }
+ }
+ vec_free (to_be_deleted);
}
/* process ipsec sas */
}));
/* *INDENT-ON* */
+ ikev2_process_pending_sa_init (km);
+
if (req_sent)
{
vlib_process_wait_for_event_or_clock (vm, 5);
Code Review / vpp.git / blobdiff