#include <vlib/vlib.h>
#include <vlib/unix/plugin.h>
+#include <vlibmemory/api.h>
#include <vpp/app/version.h>
#include <vnet/vnet.h>
-#include <vnet/pg/pg.h>
#include <vppinfra/error.h>
#include <vppinfra/random.h>
#include <vnet/udp/udp.h>
#include <vnet/ipip/ipip.h>
#include <plugins/ikev2/ikev2.h>
#include <plugins/ikev2/ikev2_priv.h>
+#include <plugins/dns/dns.h>
#include <openssl/sha.h>
+#include <vnet/ipsec/ipsec_punt.h>
+#include <plugins/ikev2/ikev2.api_enum.h>
+
+#define IKEV2_LIVENESS_RETRIES 3
+#define IKEV2_LIVENESS_PERIOD_CHECK 30
ikev2_main_t ikev2_main;
ikev2_sa_t * sa,
ikev2_child_sa_t * child);
-#define ikev2_set_state(sa, v) do { \
+#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 __VA_ARGS__, sa->ispi); \
} while(0);
typedef struct
return s;
}
-static vlib_node_registration_t ikev2_node;
-
-#define foreach_ikev2_error \
-_(PROCESSED, "IKEv2 packets processed") \
-_(IKE_SA_INIT_RETRANSMIT, "IKE_SA_INIT retransmit ") \
-_(IKE_SA_INIT_IGNORE, "IKE_SA_INIT ignore (IKE SA already auth)") \
-_(IKE_REQ_RETRANSMIT, "IKE request retransmit") \
-_(IKE_REQ_IGNORE, "IKE request ignore (old msgid)") \
-_(NOT_IKEV2, "Non IKEv2 packets received")
+#define IKEV2_GENERATE_SA_INIT_OK_str ""
+#define IKEV2_GENERATE_SA_INIT_OK_ERR_NO_DH_STR \
+ "no DH group configured for IKE proposals!"
+#define IKEV2_GENERATE_SA_INIT_OK_ERR_UNSUPP_STR \
+ "DH group not supported!"
typedef enum
{
-#define _(sym,str) IKEV2_ERROR_##sym,
- foreach_ikev2_error
-#undef _
- IKEV2_N_ERROR,
-} ikev2_error_t;
+ IKEV2_GENERATE_SA_INIT_OK,
+ IKEV2_GENERATE_SA_INIT_ERR_NO_DH,
+ IKEV2_GENERATE_SA_INIT_ERR_UNSUPPORTED_DH,
+} ikev2_generate_sa_error_t;
-static char *ikev2_error_strings[] = {
-#define _(sym,string) string,
- foreach_ikev2_error
-#undef _
-};
+static u8 *
+format_ikev2_gen_sa_error (u8 * s, va_list * args)
+{
+ ikev2_generate_sa_error_t e = va_arg (*args, ikev2_generate_sa_error_t);
+ switch (e)
+ {
+ case IKEV2_GENERATE_SA_INIT_OK:
+ break;
+ case IKEV2_GENERATE_SA_INIT_ERR_NO_DH:
+ s = format (s, IKEV2_GENERATE_SA_INIT_OK_ERR_NO_DH_STR);
+ break;
+ case IKEV2_GENERATE_SA_INIT_ERR_UNSUPPORTED_DH:
+ s = format (s, IKEV2_GENERATE_SA_INIT_OK_ERR_UNSUPP_STR);
+ break;
+ }
+ return s;
+}
typedef enum
{
IKEV2_NEXT_IP4_LOOKUP,
- IKEV2_NEXT_ERROR_DROP,
- IKEV2_N_NEXT,
-} ikev2_next_t;
+ IKEV2_NEXT_IP4_ERROR_DROP,
+ IKEV2_IP4_N_NEXT,
+} ikev2_ip4_next_t;
+
+typedef enum
+{
+ IKEV2_NEXT_IP6_LOOKUP,
+ IKEV2_NEXT_IP6_ERROR_DROP,
+ IKEV2_IP6_N_NEXT,
+} ikev2_ip6_next_t;
+
+typedef u32 ikev2_non_esp_marker;
+
+static_always_inline u16
+ikev2_get_port (ikev2_sa_t * sa)
+{
+ return ikev2_natt_active (sa) ? 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)
{
vec_free (p->transforms);
}
vec_free (*v);
-};
+}
+
+static void
+ikev2_sa_free_child_sa (ikev2_child_sa_t * c)
+{
+ ikev2_sa_free_proposal_vector (&c->r_proposals);
+ ikev2_sa_free_proposal_vector (&c->i_proposals);
+ vec_free (c->sk_ai);
+ vec_free (c->sk_ar);
+ vec_free (c->sk_ei);
+ vec_free (c->sk_er);
+ vec_free (c->tsi);
+ vec_free (c->tsr);
+}
static void
ikev2_sa_free_all_child_sa (ikev2_child_sa_t ** childs)
{
ikev2_child_sa_t *c;
- vec_foreach (c, *childs)
- {
- ikev2_sa_free_proposal_vector (&c->r_proposals);
- ikev2_sa_free_proposal_vector (&c->i_proposals);
- vec_free (c->sk_ai);
- vec_free (c->sk_ar);
- vec_free (c->sk_ei);
- vec_free (c->sk_er);
- }
+ vec_foreach (c, *childs) ikev2_sa_free_child_sa (c);
vec_free (*childs);
}
static void
ikev2_sa_del_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * child)
{
- ikev2_sa_free_proposal_vector (&child->r_proposals);
- ikev2_sa_free_proposal_vector (&child->i_proposals);
- vec_free (child->sk_ai);
- vec_free (child->sk_ar);
- vec_free (child->sk_ei);
- vec_free (child->sk_er);
-
+ ikev2_sa_free_child_sa (child);
vec_del1 (sa->childs, child - sa->childs);
}
ikev2_sa_free_all_vec (ikev2_sa_t * sa)
{
vec_free (sa->i_nonce);
- vec_free (sa->i_dh_data);
+ vec_free (sa->r_nonce);
+
vec_free (sa->dh_shared_key);
vec_free (sa->dh_private_key);
+ vec_free (sa->i_dh_data);
+ vec_free (sa->r_dh_data);
ikev2_sa_free_proposal_vector (&sa->r_proposals);
ikev2_sa_free_proposal_vector (&sa->i_proposals);
vec_free (sa->sk_pr);
vec_free (sa->i_id.data);
- vec_free (sa->i_auth.data);
vec_free (sa->r_id.data);
+
+ vec_free (sa->i_auth.data);
+ if (sa->i_auth.key)
+ EVP_PKEY_free (sa->i_auth.key);
vec_free (sa->r_auth.data);
if (sa->r_auth.key)
EVP_PKEY_free (sa->r_auth.key);
vec_free (sa->del);
+ vec_free (sa->rekey);
+
+ vec_free (sa->last_sa_init_req_packet_data);
+ vec_free (sa->last_sa_init_res_packet_data);
+
+ vec_free (sa->last_res_packet_data);
+
ikev2_sa_free_all_child_sa (&sa->childs);
}
static void
-ikev2_delete_sa (ikev2_sa_t * sa)
+ikev2_delete_sa (ikev2_main_per_thread_data_t * ptd, ikev2_sa_t * sa)
{
- ikev2_main_t *km = &ikev2_main;
- u32 thread_index = vlib_get_thread_index ();
uword *p;
ikev2_sa_free_all_vec (sa);
- p = hash_get (km->per_thread_data[thread_index].sa_by_rspi, sa->rspi);
+ p = hash_get (ptd->sa_by_rspi, sa->rspi);
if (p)
{
- hash_unset (km->per_thread_data[thread_index].sa_by_rspi, sa->rspi);
- pool_put (km->per_thread_data[thread_index].sas, sa);
+ hash_unset (ptd->sa_by_rspi, sa->rspi);
+ pool_put (ptd->sas, sa);
}
}
-static void
+static ikev2_generate_sa_error_t
ikev2_generate_sa_init_data (ikev2_sa_t * sa)
{
ikev2_sa_transform_t *t = 0, *t2;
ikev2_main_t *km = &ikev2_main;
if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE)
- {
- return;
- }
+ return IKEV2_GENERATE_SA_INIT_ERR_NO_DH;
/* check if received DH group is on our list of supported groups */
vec_foreach (t2, km->supported_transforms)
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;
+ return IKEV2_GENERATE_SA_INIT_ERR_UNSUPPORTED_DH;
}
if (sa->is_initiator)
/* generate dh keys */
ikev2_generate_dh (sa, t);
+ return IKEV2_GENERATE_SA_INIT_OK;
}
static void
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->i_dh_data = _(sai->i_dh_data);
sa->dh_private_key = _(sai->dh_private_key);
- sa->iaddr.as_u32 = sai->iaddr.as_u32;
- sa->raddr.as_u32 = sai->raddr.as_u32;
+ ip_address_copy (&sa->iaddr, &sai->iaddr);
+ ip_address_copy (&sa->raddr, &sai->raddr);
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;
+ if (sai->natt_state == IKEV2_NATT_DISABLED)
+ sa->natt_state = IKEV2_NATT_DISABLED;
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->last_init_msg_id = sai->last_init_msg_id;
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);
pos += tr_prf->key_len;
vec_free (keymat);
+ sa->keys_generated = 1;
}
static void
vec_free (keymat);
}
-static void
-ikev2_process_sa_init_req (vlib_main_t * vm, ikev2_sa_t * sa,
- ike_header_t * ike)
+static_always_inline u8 *
+ikev2_compute_nat_sha1 (u64 ispi, u64 rspi, ip_address_t * ia, u16 port)
+{
+ const u32 max_buf_size =
+ sizeof (ispi) + sizeof (rspi) + sizeof (ip6_address_t) + sizeof (u16);
+ u8 buf[max_buf_size];
+ 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_addr_bytes (ia), ip_address_size (ia));
+ clib_memcpy_fast (&buf[8 + 8 + ip_address_size (ia)], &port, sizeof (port));
+ SHA1 (buf, 2 * sizeof (ispi) + sizeof (port) + ip_address_size (ia), res);
+ return res;
+}
+
+static int
+ikev2_parse_ke_payload (const void *p, u32 rlen, ikev2_sa_t * sa,
+ u8 ** ke_data)
+{
+ const ike_ke_payload_header_t *ke = p;
+ u16 plen = clib_net_to_host_u16 (ke->length);
+ ASSERT (plen >= sizeof (*ke) && plen <= rlen);
+ if (sizeof (*ke) > rlen)
+ return 0;
+
+ sa->dh_group = clib_net_to_host_u16 (ke->dh_group);
+ vec_reset_length (ke_data[0]);
+ vec_add (ke_data[0], ke->payload, plen - sizeof (*ke));
+ return 1;
+}
+
+static int
+ikev2_parse_nonce_payload (const void *p, u32 rlen, u8 * nonce)
+{
+ const ike_payload_header_t *ikep = p;
+ u16 plen = clib_net_to_host_u16 (ikep->length);
+ ASSERT (plen >= sizeof (*ikep) && plen <= rlen);
+ clib_memcpy_fast (nonce, ikep->payload, plen - sizeof (*ikep));
+ return 1;
+}
+
+static int
+ikev2_check_payload_length (const ike_payload_header_t * ikep, int rlen,
+ u16 * plen)
+{
+ if (sizeof (*ikep) > rlen)
+ return 0;
+ *plen = clib_net_to_host_u16 (ikep->length);
+ if (*plen < sizeof (*ikep) || *plen > rlen)
+ return 0;
+ return 1;
+}
+
+static int
+ikev2_process_sa_init_req (vlib_main_t *vm, ikev2_sa_t *sa, ike_header_t *ike,
+ udp_header_t *udp, u32 len, u32 sw_if_index)
{
+ u8 nonce[IKEV2_NONCE_SIZE];
int p = 0;
- u32 len = clib_net_to_host_u32 (ike->length);
u8 payload = ike->nextpayload;
+ ike_payload_header_t *ikep;
+ u16 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 IKE_INIT request received "
+ "from ", clib_net_to_host_u64 (ike->ispi),
+ clib_net_to_host_u64 (ike->rspi),
+ ip_addr_v4 (&sa->iaddr).as_u32,
+ ip_addr_version (&sa->iaddr) == AF_IP4);
sa->ispi = clib_net_to_host_u64 (ike->ispi);
+ sa->sw_if_index = sw_if_index;
/* store whole IKE payload - needed for PSK auth */
- vec_free (sa->last_sa_init_req_packet_data);
+ vec_reset_length (sa->last_sa_init_req_packet_data);
vec_add (sa->last_sa_init_req_packet_data, ike, len);
+ if (len < sizeof (*ike))
+ return 0;
+
+ len -= sizeof (*ike);
while (p < len && payload != IKEV2_PAYLOAD_NONE)
{
- ike_payload_header_t *ikep = (ike_payload_header_t *) & ike->payload[p];
- u32 plen = clib_net_to_host_u16 (ikep->length);
-
- if (plen < sizeof (ike_payload_header_t))
- return;
+ ikep = (ike_payload_header_t *) & ike->payload[p];
+ int current_length = len - p;
+ if (!ikev2_check_payload_length (ikep, current_length, &plen))
+ return 0;
if (payload == IKEV2_PAYLOAD_SA)
{
ikev2_sa_free_proposal_vector (&sa->i_proposals);
- sa->i_proposals = ikev2_parse_sa_payload (ikep);
+ sa->i_proposals = ikev2_parse_sa_payload (ikep, current_length);
}
else if (payload == IKEV2_PAYLOAD_KE)
{
- ike_ke_payload_header_t *ke = (ike_ke_payload_header_t *) ikep;
- sa->dh_group = clib_net_to_host_u16 (ke->dh_group);
- vec_free (sa->i_dh_data);
- vec_add (sa->i_dh_data, ke->payload, plen - sizeof (*ke));
+ if (!ikev2_parse_ke_payload (ikep, current_length, sa,
+ &sa->i_dh_data))
+ return 0;
}
else if (payload == IKEV2_PAYLOAD_NONCE)
{
- vec_free (sa->i_nonce);
- vec_add (sa->i_nonce, ikep->payload, plen - sizeof (*ikep));
+ vec_reset_length (sa->i_nonce);
+ if (ikev2_parse_nonce_payload (ikep, current_length, nonce))
+ vec_add (sa->i_nonce, nonce, plen - sizeof (*ikep));
}
else if (payload == IKEV2_PAYLOAD_NOTIFY)
{
- ikev2_notify_t *n = ikev2_parse_notify_payload (ikep);
+ ikev2_notify_t *n =
+ ikev2_parse_notify_payload (ikep, current_length);
+ if (n->msg_type == IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP)
+ {
+ u8 *src_sha = ikev2_compute_nat_sha1 (ike->ispi, 0, &sa->iaddr,
+ udp->src_port);
+ if (clib_memcmp (src_sha, n->data, vec_len (src_sha)))
+ {
+ if (sa->natt_state == IKEV2_NATT_ENABLED)
+ sa->natt_state = IKEV2_NATT_ACTIVE;
+ 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 (ike->ispi, 0, &sa->raddr,
+ udp->dst_port);
+ if (clib_memcmp (dst_sha, n->data, vec_len (dst_sha)))
+ {
+ if (sa->natt_state == IKEV2_NATT_ENABLED)
+ sa->natt_state = IKEV2_NATT_ACTIVE;
+ 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);
sa->unsupported_cp = payload;
- return;
+ return 0;
}
}
}
ikev2_set_state (sa, IKEV2_STATE_SA_INIT);
+ return 1;
}
static void
-ikev2_process_sa_init_resp (vlib_main_t * vm, ikev2_sa_t * sa,
- ike_header_t * ike)
+ikev2_process_sa_init_resp (vlib_main_t * vm,
+ ikev2_sa_t * sa, ike_header_t * ike,
+ udp_header_t * udp, u32 len)
{
+ u8 nonce[IKEV2_NONCE_SIZE];
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);
+ ike_payload_header_t *ikep;
+ u16 plen;
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 ", sa->ispi, sa->rspi,
+ ip_addr_v4 (&sa->raddr).as_u32,
+ ip_addr_version (&sa->raddr) == AF_IP4);
+
/* store whole IKE payload - needed for PSK auth */
- vec_free (sa->last_sa_init_res_packet_data);
+ vec_reset_length (sa->last_sa_init_res_packet_data);
vec_add (sa->last_sa_init_res_packet_data, ike, len);
+ if (sizeof (*ike) > len)
+ return;
+
+ len -= sizeof (*ike);
while (p < len && payload != IKEV2_PAYLOAD_NONE)
{
- ike_payload_header_t *ikep = (ike_payload_header_t *) & ike->payload[p];
- u32 plen = clib_net_to_host_u16 (ikep->length);
-
- if (plen < sizeof (ike_payload_header_t))
+ int current_length = len - p;
+ ikep = (ike_payload_header_t *) & ike->payload[p];
+ if (!ikev2_check_payload_length (ikep, current_length, &plen))
return;
if (payload == IKEV2_PAYLOAD_SA)
{
ikev2_sa_free_proposal_vector (&sa->r_proposals);
- sa->r_proposals = ikev2_parse_sa_payload (ikep);
+ sa->r_proposals = ikev2_parse_sa_payload (ikep, current_length);
if (sa->r_proposals)
{
ikev2_set_state (sa, IKEV2_STATE_SA_INIT);
}
else if (payload == IKEV2_PAYLOAD_KE)
{
- ike_ke_payload_header_t *ke = (ike_ke_payload_header_t *) ikep;
- sa->dh_group = clib_net_to_host_u16 (ke->dh_group);
- vec_free (sa->r_dh_data);
- vec_add (sa->r_dh_data, ke->payload, plen - sizeof (*ke));
+ if (!ikev2_parse_ke_payload (ikep, current_length, sa,
+ &sa->r_dh_data))
+ return;
}
else if (payload == IKEV2_PAYLOAD_NONCE)
{
- vec_free (sa->r_nonce);
- vec_add (sa->r_nonce, ikep->payload, plen - sizeof (*ikep));
+ vec_reset_length (sa->r_nonce);
+ if (ikev2_parse_nonce_payload (ikep, current_length, nonce))
+ vec_add (sa->r_nonce, nonce, plen - sizeof (*ikep));
}
else if (payload == IKEV2_PAYLOAD_NOTIFY)
{
- ikev2_notify_t *n = ikev2_parse_notify_payload (ikep);
+ ikev2_notify_t *n =
+ ikev2_parse_notify_payload (ikep, current_length);
+ if (n->msg_type == IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP)
+ {
+ u8 *src_sha = ikev2_compute_nat_sha1 (ike->ispi, ike->rspi,
+ &sa->raddr,
+ 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,
+ udp->dst_port);
+ if (clib_memcmp (dst_sha, n->data, vec_len (dst_sha)))
+ {
+ if (sa->natt_state == IKEV2_NATT_ENABLED)
+ sa->natt_state = IKEV2_NATT_ACTIVE;
+ 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_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike,
+ u8 * payload, u32 rlen, u32 * out_len)
{
+ ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
int p = 0;
- u8 last_payload = 0;
- u8 *hmac = 0;
- u32 len = clib_net_to_host_u32 (ike->length);
+ u8 last_payload = 0, *hmac = 0, *plaintext = 0;
ike_payload_header_t *ikep = 0;
- u32 plen = 0;
+ u16 plen = 0;
+ u32 dlen = 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) || (!sa->sk_ei || !sa->sk_er))
+ return 0;
+
+ if (rlen <= sizeof (*ike))
+ return 0;
+ int len = rlen - sizeof (*ike);
while (p < len &&
*payload != IKEV2_PAYLOAD_NONE && last_payload != IKEV2_PAYLOAD_SK)
{
ikep = (ike_payload_header_t *) & ike->payload[p];
- plen = clib_net_to_host_u16 (ikep->length);
-
- if (plen < sizeof (*ikep))
+ int current_length = len - p;
+ if (!ikev2_check_payload_length (ikep, current_length, &plen))
return 0;
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))
+ int rc = ikev2_decrypt_aead_data (ptd, sa, tr_encr, ikep->payload,
+ plen, aad, aad_len, tag, &dlen);
+ if (rc)
+ {
+ *out_len = dlen;
+ plaintext = ikep->payload + IKEV2_GCM_IV_SIZE;
+ }
+ }
+ else
{
- clib_warning ("message integrity check failed");
+ if (rlen < tr_integ->key_trunc)
+ return 0;
+
+ hmac =
+ ikev2_calc_integr (tr_integ, sa->is_initiator ? sa->sk_ar : sa->sk_ai,
+ (u8 *) ike, rlen - tr_integ->key_trunc);
+
+ if (plen < sizeof (*ikep) + tr_integ->key_trunc)
+ return 0;
+
+ plen = plen - sizeof (*ikep) - tr_integ->key_trunc;
+
+ if (clib_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;
+
+ int rc = ikev2_decrypt_data (ptd, sa, tr_encr, ikep->payload, plen,
+ &dlen);
+ if (rc)
+ {
+ *out_len = dlen;
+ plaintext = ikep->payload + tr_encr->block_size;
+ }
}
- 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 (clib_memcmp (i1->data, i2->data, vec_len (i1->data)))
+ return 0;
+
+ return 1;
}
static void
-ikev2_initial_contact_cleanup (ikev2_sa_t * sa)
+ikev2_initial_contact_cleanup_internal (ikev2_main_per_thread_data_t * ptd,
+ ikev2_sa_t * sa)
{
ikev2_main_t *km = &ikev2_main;
ikev2_sa_t *tmp;
u32 i, *delete = 0;
ikev2_child_sa_t *c;
- u32 thread_index = vlib_get_thread_index ();
-
- if (!sa->initial_contact)
- return;
/* 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)))
- continue;
-
- if (sa->rspi != tmp->rspi)
- vec_add1(delete, tmp - km->per_thread_data[thread_index].sas);
- }));
+ pool_foreach (tmp, ptd->sas) {
+ 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)
+ vec_add1(delete, tmp - ptd->sas);
+ }
/* *INDENT-ON* */
for (i = 0; i < vec_len (delete); i++)
{
- tmp =
- pool_elt_at_index (km->per_thread_data[thread_index].sas, delete[i]);
- vec_foreach (c,
- tmp->childs) ikev2_delete_tunnel_interface (km->vnet_main,
- tmp, c);
- ikev2_delete_sa (tmp);
+ tmp = pool_elt_at_index (ptd->sas, delete[i]);
+ vec_foreach (c, tmp->childs)
+ {
+ ikev2_delete_tunnel_interface (km->vnet_main, tmp, c);
+ }
+ ikev2_delete_sa (ptd, tmp);
}
vec_free (delete);
}
static void
-ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike)
+ikev2_initial_contact_cleanup (ikev2_main_per_thread_data_t * ptd,
+ ikev2_sa_t * sa)
+{
+ ikev2_main_t *km = &ikev2_main;
+
+ if (!sa->initial_contact)
+ return;
+
+ if (ptd)
+ {
+ ikev2_initial_contact_cleanup_internal (ptd, sa);
+ }
+ else
+ {
+ vec_foreach (ptd, km->per_thread_data)
+ ikev2_initial_contact_cleanup_internal (ptd, sa);
+ }
+ sa->initial_contact = 0;
+}
+
+static int
+ikev2_parse_id_payload (const void *p, u16 rlen, ikev2_id_t * sa_id)
+{
+ const ike_id_payload_header_t *id = p;
+ u16 plen = clib_net_to_host_u16 (id->length);
+ if (plen < sizeof (*id) || plen > rlen)
+ return 0;
+
+ sa_id->type = id->id_type;
+ vec_reset_length (sa_id->data);
+ vec_add (sa_id->data, id->payload, plen - sizeof (*id));
+
+ return 1;
+}
+
+static int
+ikev2_parse_auth_payload (const void *p, u32 rlen, ikev2_auth_t * a)
+{
+ const ike_auth_payload_header_t *ah = p;
+ u16 plen = clib_net_to_host_u16 (ah->length);
+
+ a->method = ah->auth_method;
+ vec_reset_length (a->data);
+ vec_add (a->data, ah->payload, plen - sizeof (*ah));
+ return 1;
+}
+
+static int
+ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa,
+ ike_header_t * ike, u32 len)
{
- ikev2_child_sa_t *first_child_sa;
int p = 0;
- u32 len = clib_net_to_host_u32 (ike->length);
+ ikev2_child_sa_t *first_child_sa;
u8 payload = ike->nextpayload;
u8 *plaintext = 0;
-
ike_payload_header_t *ikep;
- u32 plen;
+ u16 plen;
+ u32 dlen = 0;
- 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 ", clib_host_to_net_u64 (ike->ispi),
+ clib_host_to_net_u64 (ike->rspi),
+ sa->is_initiator ?
+ ip_addr_v4 (&sa->raddr).as_u32 :
+ ip_addr_v4 (&sa->iaddr).as_u32,
+ ip_addr_version (&sa->raddr) == AF_IP4);
ikev2_calc_keys (sa);
- plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload);
+ plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload, len, &dlen);
if (!plaintext)
{
if (sa->unsupported_cp)
- ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
- goto cleanup_and_exit;
+ {
+ ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
+ return 0;
+ }
+ goto malformed;
}
/* select or create 1st child SA */
/* process encrypted payload */
- p = 0;
- while (p < vec_len (plaintext) && payload != IKEV2_PAYLOAD_NONE)
+ while (p < dlen && payload != IKEV2_PAYLOAD_NONE)
{
ikep = (ike_payload_header_t *) & plaintext[p];
- plen = clib_net_to_host_u16 (ikep->length);
-
- if (plen < sizeof (ike_payload_header_t))
- goto cleanup_and_exit;
+ int current_length = dlen - p;
+ if (!ikev2_check_payload_length (ikep, current_length, &plen))
+ goto malformed;
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);
- first_child_sa->r_proposals = ikev2_parse_sa_payload (ikep);
+ first_child_sa->r_proposals = ikev2_parse_sa_payload (ikep,
+ current_length);
}
else
{
ikev2_sa_free_proposal_vector (&first_child_sa->i_proposals);
- first_child_sa->i_proposals = ikev2_parse_sa_payload (ikep);
+ first_child_sa->i_proposals = ikev2_parse_sa_payload (ikep,
+ current_length);
}
}
else if (payload == IKEV2_PAYLOAD_IDI) /* 35 */
{
- ike_id_payload_header_t *id = (ike_id_payload_header_t *) ikep;
-
- 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);
+ if (!ikev2_parse_id_payload (ikep, current_length, &sa->i_id))
+ goto malformed;
}
else if (payload == IKEV2_PAYLOAD_IDR) /* 36 */
{
- ike_id_payload_header_t *id = (ike_id_payload_header_t *) ikep;
-
- 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);
+ if (!ikev2_parse_id_payload (ikep, current_length, &sa->r_id))
+ goto malformed;
}
else if (payload == IKEV2_PAYLOAD_AUTH) /* 39 */
{
- ike_auth_payload_header_t *a = (ike_auth_payload_header_t *) ikep;
-
if (sa->is_initiator)
{
- sa->r_auth.method = a->auth_method;
- vec_free (sa->r_auth.data);
- vec_add (sa->r_auth.data, a->payload, plen - sizeof (*a));
+ if (!ikev2_parse_auth_payload (ikep, current_length,
+ &sa->r_auth))
+ goto malformed;
}
else
{
- sa->i_auth.method = a->auth_method;
- vec_free (sa->i_auth.data);
- vec_add (sa->i_auth.data, a->payload, plen - sizeof (*a));
+ if (!ikev2_parse_auth_payload (ikep, current_length,
+ &sa->i_auth))
+ goto malformed;
}
-
- clib_warning ("received payload AUTH, len %u auth_type %u",
- plen - sizeof (*a), a->auth_method);
}
else if (payload == IKEV2_PAYLOAD_NOTIFY) /* 41 */
{
- ikev2_notify_t *n = ikev2_parse_notify_payload (ikep);
+ ikev2_notify_t *n =
+ ikev2_parse_notify_payload (ikep, current_length);
if (n->msg_type == IKEV2_NOTIFY_MSG_INITIAL_CONTACT)
{
sa->initial_contact = 1;
}
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);
+ first_child_sa->tsi = ikev2_parse_ts_payload (ikep, current_length);
}
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);
+ first_child_sa->tsr = ikev2_parse_ts_payload (ikep, current_length);
}
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)
{
ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE);
sa->unsupported_cp = payload;
- return;
+ return 0;
}
}
p += plen;
}
-cleanup_and_exit:
- vec_free (plaintext);
+ return 1;
+
+malformed:
+ ikev2_set_state (sa, IKEV2_STATE_DELETED, ": malformed IKE_AUTH");
+ return 0;
}
-static void
-ikev2_process_informational_req (vlib_main_t * vm, ikev2_sa_t * sa,
- ike_header_t * ike)
+static int
+ikev2_process_informational_req (vlib_main_t * vm,
+ ikev2_sa_t * sa, ike_header_t * ike, u32 len)
{
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;
+ u32 dlen = 0;
+ ikev2_notify_t *n = 0;
- 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 ", clib_host_to_net_u64 (ike->ispi),
+ clib_host_to_net_u64 (ike->rspi),
+ ip_addr_v4 (&sa->iaddr).as_u32,
+ ip_addr_version (&sa->iaddr) == AF_IP4);
- plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload);
+ plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload, len, &dlen);
if (!plaintext)
- goto cleanup_and_exit;
+ return 0;
/* process encrypted payload */
p = 0;
- while (p < vec_len (plaintext) && payload != IKEV2_PAYLOAD_NONE)
+ while (p < dlen && payload != IKEV2_PAYLOAD_NONE)
{
+ u32 current_length = dlen - p;
+ if (p + sizeof (*ikep) > dlen)
+ return 0;
+
ikep = (ike_payload_header_t *) & plaintext[p];
- plen = clib_net_to_host_u16 (ikep->length);
+ u16 plen = clib_net_to_host_u16 (ikep->length);
- if (plen < sizeof (ike_payload_header_t))
- goto cleanup_and_exit;
+ if (plen < sizeof (*ikep) || plen > current_length)
+ return 0;
if (payload == IKEV2_PAYLOAD_NOTIFY) /* 41 */
{
- ikev2_notify_t *n = ikev2_parse_notify_payload (ikep);
+ n = ikev2_parse_notify_payload (ikep, current_length);
+ if (!n)
+ return 0;
if (n->msg_type == IKEV2_NOTIFY_MSG_AUTHENTICATION_FAILED)
ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
vec_free (n);
}
else if (payload == IKEV2_PAYLOAD_DELETE) /* 42 */
{
- sa->del = ikev2_parse_delete_payload (ikep);
+ sa->del = ikev2_parse_delete_payload (ikep, current_length);
}
else if (payload == IKEV2_PAYLOAD_VENDOR) /* 43 */
{
}
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;
+ return 0;
}
}
-
payload = ikep->nextpayload;
p += plen;
}
-
-cleanup_and_exit:
- vec_free (plaintext);
+ return 1;
}
-static void
-ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa,
- ike_header_t * ike)
+static int
+ikev2_process_create_child_sa_req (vlib_main_t * vm,
+ ikev2_sa_t * sa, ike_header_t * ike,
+ u32 len)
{
int p = 0;
- u32 len = clib_net_to_host_u32 (ike->length);
u8 payload = ike->nextpayload;
u8 *plaintext = 0;
u8 rekeying = 0;
u8 nonce[IKEV2_NONCE_SIZE];
-
+ ikev2_rekey_t *rekey;
ike_payload_header_t *ikep;
- u32 plen;
ikev2_notify_t *n = 0;
ikev2_ts_t *tsi = 0;
ikev2_ts_t *tsr = 0;
ikev2_sa_proposal_t *proposal = 0;
ikev2_child_sa_t *child_sa;
+ u32 dlen = 0, src;
+ u16 plen;
+
+ if (sa->is_initiator)
+ src = ip_addr_v4 (&sa->raddr).as_u32;
+ else
+ src = ip_addr_v4 (&sa->iaddr).as_u32;
- 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",
+ clib_host_to_net_u64 (ike->ispi),
+ clib_host_to_net_u64 (ike->rspi), src,
+ ip_addr_version (&sa->raddr) == AF_IP4);
- plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload);
+ plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload, len, &dlen);
if (!plaintext)
goto cleanup_and_exit;
/* process encrypted payload */
p = 0;
- while (p < vec_len (plaintext) && payload != IKEV2_PAYLOAD_NONE)
+ while (payload != IKEV2_PAYLOAD_NONE)
{
ikep = (ike_payload_header_t *) & plaintext[p];
- plen = clib_net_to_host_u16 (ikep->length);
-
- if (plen < sizeof (ike_payload_header_t))
+ int current_length = dlen - p;
+ if (!ikev2_check_payload_length (ikep, current_length, &plen))
goto cleanup_and_exit;
- else if (payload == IKEV2_PAYLOAD_SA)
+ if (payload == IKEV2_PAYLOAD_SA)
{
- proposal = ikev2_parse_sa_payload (ikep);
+ proposal = ikev2_parse_sa_payload (ikep, current_length);
}
else if (payload == IKEV2_PAYLOAD_NOTIFY)
{
- n = ikev2_parse_notify_payload (ikep);
+ n = ikev2_parse_notify_payload (ikep, current_length);
if (n->msg_type == IKEV2_NOTIFY_MSG_REKEY_SA)
{
rekeying = 1;
}
else if (payload == IKEV2_PAYLOAD_DELETE)
{
- sa->del = ikev2_parse_delete_payload (ikep);
+ sa->del = ikev2_parse_delete_payload (ikep, current_length);
}
else if (payload == IKEV2_PAYLOAD_VENDOR)
{
}
else if (payload == IKEV2_PAYLOAD_NONCE)
{
- clib_memcpy_fast (nonce, ikep->payload, plen - sizeof (*ikep));
+ ikev2_parse_nonce_payload (ikep, current_length, nonce);
}
else if (payload == IKEV2_PAYLOAD_TSI)
{
- tsi = ikev2_parse_ts_payload (ikep);
+ tsi = ikev2_parse_ts_payload (ikep, current_length);
}
else if (payload == IKEV2_PAYLOAD_TSR)
{
- tsr = ikev2_parse_ts_payload (ikep);
+ tsr = ikev2_parse_ts_payload (ikep, current_length);
}
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;
}
}
-
payload = ikep->nextpayload;
p += plen;
}
- if (sa->is_initiator && proposal->protocol_id == IKEV2_PROTOCOL_ESP)
+ if (!proposal || proposal->protocol_id != IKEV2_PROTOCOL_ESP)
+ goto cleanup_and_exit;
+
+ if (sa->is_initiator)
{
- ikev2_rekey_t *rekey = &sa->rekey[0];
+ rekey = sa->rekey;
+ if (vec_len (rekey) == 0)
+ goto cleanup_and_exit;
rekey->protocol_id = proposal->protocol_id;
rekey->i_proposal =
ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
rekey->tsi = tsi;
rekey->tsr = tsr;
/* update Nr */
- vec_free (sa->r_nonce);
+ vec_reset_length (sa->r_nonce);
vec_add (sa->r_nonce, nonce, IKEV2_NONCE_SIZE);
child_sa = ikev2_sa_get_child (sa, rekey->ispi, IKEV2_PROTOCOL_ESP, 1);
if (child_sa)
child_sa->rekey_retries = 0;
}
}
- else if (rekeying)
+ else
{
- ikev2_rekey_t *rekey;
- child_sa = ikev2_sa_get_child (sa, n->spi, n->protocol_id, 1);
- if (!child_sa)
+ if (rekeying)
{
- clib_warning ("child SA spi %lx not found", n->spi);
- goto cleanup_and_exit;
+ child_sa = ikev2_sa_get_child (sa, n->spi, n->protocol_id, 1);
+ if (!child_sa)
+ {
+ ikev2_elog_uint (IKEV2_LOG_ERROR, "child SA spi %lx not found",
+ n->spi);
+ goto cleanup_and_exit;
+ }
+ vec_add2 (sa->rekey, rekey, 1);
+ rekey->protocol_id = n->protocol_id;
+ rekey->spi = n->spi;
+ rekey->i_proposal = proposal;
+ rekey->r_proposal =
+ ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
+ /* update Ni */
+ vec_reset_length (sa->i_nonce);
+ vec_add (sa->i_nonce, nonce, IKEV2_NONCE_SIZE);
+ /* generate new Nr */
+ vec_validate (sa->r_nonce, IKEV2_NONCE_SIZE - 1);
+ RAND_bytes ((u8 *) sa->r_nonce, IKEV2_NONCE_SIZE);
+ }
+ else
+ {
+ /* create new child SA */
+ vec_add2 (sa->new_child, rekey, 1);
+ rekey->i_proposal = proposal;
+ rekey->r_proposal =
+ ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
+ /* update Ni */
+ vec_reset_length (sa->i_nonce);
+ vec_add (sa->i_nonce, nonce, IKEV2_NONCE_SIZE);
+ /* generate new Nr */
+ vec_validate (sa->r_nonce, IKEV2_NONCE_SIZE - 1);
+ RAND_bytes ((u8 *) sa->r_nonce, IKEV2_NONCE_SIZE);
}
- vec_add2 (sa->rekey, rekey, 1);
- rekey->protocol_id = n->protocol_id;
- rekey->spi = n->spi;
- rekey->i_proposal = proposal;
- rekey->r_proposal =
- ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP);
rekey->tsi = tsi;
rekey->tsr = tsr;
- /* update Ni */
- vec_free (sa->i_nonce);
- vec_add (sa->i_nonce, nonce, IKEV2_NONCE_SIZE);
- /* generate new Nr */
- vec_free (sa->r_nonce);
- sa->r_nonce = vec_new (u8, IKEV2_NONCE_SIZE);
- RAND_bytes ((u8 *) sa->r_nonce, IKEV2_NONCE_SIZE);
}
+ vec_free (n);
+ return 1;
cleanup_and_exit:
- vec_free (plaintext);
vec_free (n);
+ vec_free (proposal);
+ vec_free (tsr);
+ vec_free (tsi);
+ return 0;
}
static u8 *
{
if (ts1->ts_type == ts2->ts_type && ts1->protocol_id == ts2->protocol_id &&
ts1->start_port == ts2->start_port && ts1->end_port == ts2->end_port &&
- ts1->start_addr.as_u32 == ts2->start_addr.as_u32 &&
- ts1->end_addr.as_u32 == ts2->end_addr.as_u32)
+ !ip_address_cmp (&ts1->start_addr, &ts2->start_addr) &&
+ !ip_address_cmp (&ts1->end_addr, &ts2->end_addr))
return 1;
return 0;
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, ({
+ pool_foreach (p, km->profiles) {
if (sa->is_initiator)
{
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))
}
break;
- }));
+ }
/* *INDENT-ON* */
if (tsi && tsr)
}
}
-static void
-ikev2_sa_auth (ikev2_sa_t * sa)
+static ikev2_profile_t *
+ikev2_select_profile (ikev2_main_t *km, ikev2_sa_t *sa,
+ ikev2_sa_transform_t *tr_prf, u8 *key_pad)
{
- ikev2_main_t *km = &ikev2_main;
- ikev2_profile_t *p, *sel_p = 0;
- u8 *authmsg, *key_pad, *psk = 0, *auth = 0;
- ikev2_sa_transform_t *tr_prf;
-
- tr_prf =
- ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
-
- /* only shared key and rsa signature */
- 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_set_state (sa, IKEV2_STATE_AUTH_FAILED);
- return;
- }
+ ikev2_profile_t *ret = 0, *p;
+ ikev2_id_t *id_rem, *id_loc;
+ ikev2_auth_t *sa_auth;
+ u8 *authmsg, *psk = 0, *auth = 0;
- key_pad = format (0, "%s", IKEV2_KEY_PAD);
authmsg = ikev2_sa_generate_authmsg (sa, sa->is_initiator);
- ikev2_id_t *sa_id;
- 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;
}
- /* *INDENT-OFF* */
- pool_foreach (p, km->profiles, ({
+ pool_foreach (p, km->profiles)
+ {
+ /* check id */
+ if (!ikev2_is_id_equal (&p->rem_id, id_rem) ||
+ !ikev2_is_id_equal (&p->loc_id, id_loc))
+ continue;
- /* 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)))
- continue;
+ if (sa_auth->method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
+ {
+ if (!p->auth.data ||
+ p->auth.method != IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
+ continue;
- if (sa_auth->method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
- {
- if (!p->auth.data ||
- p->auth.method != IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
- continue;
+ psk = ikev2_calc_prf (tr_prf, p->auth.data, key_pad);
+ auth = ikev2_calc_prf (tr_prf, psk, authmsg);
- psk = ikev2_calc_prf(tr_prf, p->auth.data, key_pad);
- auth = ikev2_calc_prf(tr_prf, psk, authmsg);
+ if (!clib_memcmp (auth, sa_auth->data, vec_len (sa_auth->data)))
+ {
+ ikev2_set_state (sa, IKEV2_STATE_AUTHENTICATED);
+ vec_free (auth);
+ ret = p;
+ break;
+ }
+ else
+ {
+ ikev2_elog_uint (IKEV2_LOG_ERROR,
+ "shared key mismatch! ispi %lx", sa->ispi);
+ }
+ }
+ else if (sa_auth->method == IKEV2_AUTH_METHOD_RSA_SIG)
+ {
+ if (p->auth.method != IKEV2_AUTH_METHOD_RSA_SIG)
+ continue;
- if (!memcmp(auth, sa_auth->data, vec_len(sa_auth->data)))
- {
- ikev2_set_state(sa, IKEV2_STATE_AUTHENTICATED);
- vec_free(auth);
- sel_p = p;
- break;
- }
+ if (ikev2_verify_sign (p->auth.key, sa_auth->data, authmsg) == 1)
+ {
+ ikev2_set_state (sa, IKEV2_STATE_AUTHENTICATED);
+ ret = p;
+ break;
+ }
+ else
+ {
+ ikev2_elog_uint (IKEV2_LOG_ERROR,
+ "cert verification failed! ispi %lx", sa->ispi);
+ }
+ }
+ }
+ vec_free (authmsg);
+ return ret;
+}
- }
- else if (sa_auth->method == IKEV2_AUTH_METHOD_RSA_SIG)
- {
- if (p->auth.method != IKEV2_AUTH_METHOD_RSA_SIG)
- continue;
+static void
+ikev2_sa_auth (ikev2_sa_t *sa)
+{
+ ikev2_main_t *km = &ikev2_main;
+ ikev2_profile_t *sel_p = 0;
+ ikev2_sa_transform_t *tr_prf;
+ u8 *psk, *authmsg, *key_pad;
- if (ikev2_verify_sign(p->auth.key, sa_auth->data, authmsg) == 1)
- {
- ikev2_set_state(sa, IKEV2_STATE_AUTHENTICATED);
- sel_p = p;
- break;
- }
- }
+ tr_prf =
+ ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF);
- vec_free(auth);
- vec_free(psk);
- }));
- /* *INDENT-ON* */
+ /* only shared key and rsa signature */
+ if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC ||
+ sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG))
+ {
+ ikev2_elog_uint (IKEV2_LOG_ERROR, "unsupported authentication method %u",
+ sa->i_auth.method);
+ ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED);
+ return;
+ }
- vec_free (authmsg);
+ key_pad = format (0, "%s", IKEV2_KEY_PAD);
+ sel_p = ikev2_select_profile (km, sa, tr_prf, key_pad);
- if (sa->state == IKEV2_STATE_AUTHENTICATED)
+ if (sel_p)
{
+ ASSERT (sa->state == IKEV2_STATE_AUTHENTICATED);
+ sa->udp_encap = sel_p->udp_encap;
+ sa->ipsec_over_udp_port = sel_p->ipsec_over_udp_port;
+
if (!sa->is_initiator)
{
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);
if (sel_p->auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC)
{
+ vec_free (sa->r_auth.data);
+ psk = ikev2_calc_prf (tr_prf, sel_p->auth.data, key_pad);
sa->r_auth.data = ikev2_calc_prf (tr_prf, psk, authmsg);
sa->r_auth.method = IKEV2_AUTH_METHOD_SHARED_KEY_MIC;
+ vec_free (psk);
}
else if (sel_p->auth.method == IKEV2_AUTH_METHOD_RSA_SIG)
{
+ vec_free (sa->r_auth.data);
sa->r_auth.data = ikev2_calc_sign (km->pkey, authmsg);
sa->r_auth.method = IKEV2_AUTH_METHOD_RSA_SIG;
}
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);
vec_free (key_pad);
}
-
static void
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)
{
+ key_pad = format (0, "%s", IKEV2_KEY_PAD);
+ psk = ikev2_calc_prf (tr_prf, sa->i_auth.data, key_pad);
+ vec_free (sa->i_auth.data);
sa->i_auth.data = ikev2_calc_prf (tr_prf, psk, authmsg);
sa->i_auth.method = IKEV2_AUTH_METHOD_SHARED_KEY_MIC;
+ vec_free (psk);
+ vec_free (key_pad);
}
else if (sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG)
{
+ vec_free (sa->i_auth.data);
sa->i_auth.data = ikev2_calc_sign (km->pkey, authmsg);
sa->i_auth.method = IKEV2_AUTH_METHOD_RSA_SIG;
}
-
- vec_free (psk);
- vec_free (key_pad);
- vec_free (auth);
vec_free (authmsg);
}
static u32
-ikev2_mk_local_sa_id (u32 ti)
+ikev2_mk_local_sa_id (u32 sai, u32 ci, u32 ti)
{
- return (0x80000000 | ti);
+ return (0x80000000 | (ti << 24) | (sai << 12) | ci);
}
static u32
-ikev2_mk_remote_sa_id (u32 ti)
+ikev2_mk_remote_sa_id (u32 sai, u32 ci, u32 ti)
+{
+ return (0xc0000000 | (ti << 24) | (sai << 12) | ci);
+}
+
+typedef struct
+{
+ u32 sw_if_index;
+ u32 salt_local;
+ u32 salt_remote;
+ u32 local_sa_id;
+ u32 remote_sa_id;
+ ipsec_sa_flags_t flags;
+ u32 local_spi;
+ u32 remote_spi;
+ ipsec_crypto_alg_t encr_type;
+ ipsec_integ_alg_t integ_type;
+ ip_address_t local_ip;
+ ip_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)
{
- return (0xc0000000 | ti);
+ ikev2_main_t *km = &ikev2_main;
+ u32 sw_if_index;
+ int rv = 0;
+ tunnel_t tun_in = {
+ .t_flags = TUNNEL_FLAG_NONE,
+ .t_encap_decap_flags = TUNNEL_ENCAP_DECAP_FLAG_NONE,
+ .t_dscp = 0,
+ .t_mode = TUNNEL_MODE_P2P,
+ .t_table_id = 0,
+ .t_hop_limit = 255,
+ .t_src = a->local_ip,
+ .t_dst = a->remote_ip,
+ };
+ tunnel_t tun_out = {
+ .t_flags = TUNNEL_FLAG_NONE,
+ .t_encap_decap_flags = TUNNEL_ENCAP_DECAP_FLAG_NONE,
+ .t_dscp = 0,
+ .t_mode = TUNNEL_MODE_P2P,
+ .t_table_id = 0,
+ .t_hop_limit = 255,
+ .t_src = a->remote_ip,
+ .t_dst = a->local_ip,
+ };
+
+ 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, &ip_addr_46 (&a->local_ip),
+ &ip_addr_46 (&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);
+ }
+
+ if (rv)
+ {
+ ikev2_elog_uint (IKEV2_LOG_ERROR,
+ "installing ipip tunnel failed! local spi: %x",
+ a->local_spi);
+ 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, a->salt_local,
+ a->src_port, a->dst_port, &tun_out, NULL);
+ if (rv)
+ goto err0;
+
+ 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), a->salt_remote,
+ a->ipsec_over_udp_port, a->ipsec_over_udp_port, &tun_in, NULL);
+ if (rv)
+ goto err1;
+
+ rv = ipsec_tun_protect_update (sw_if_index, NULL, a->local_sa_id, sas_in);
+ if (rv)
+ goto err2;
+
+ return;
+
+err2:
+ ipsec_sa_unlock_id (a->remote_sa_id);
+err1:
+ ipsec_sa_unlock_id (a->local_sa_id);
+err0:
+ vec_free (sas_in);
}
static int
-ikev2_create_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa,
- ikev2_child_sa_t * child)
+ikev2_create_tunnel_interface (vlib_main_t * vm,
+ ikev2_sa_t * sa,
+ ikev2_child_sa_t * child, u32 sa_index,
+ u32 child_index, u8 is_rekey)
{
+ u32 thread_index = vlib_get_thread_index ();
ikev2_main_t *km = &ikev2_main;
+ ipsec_crypto_alg_t encr_type;
+ ipsec_integ_alg_t integ_type;
ikev2_profile_t *p = 0;
- ipsec_key_t loc_ckey, rem_ckey, loc_ikey, rem_ikey;
ikev2_sa_transform_t *tr;
ikev2_sa_proposal_t *proposals;
- ipsec_sa_flags_t flags = 0;
- ipsec_crypto_alg_t encr_type;
- ipsec_integ_alg_t integ_type;
- u32 local_spi, remote_spi;
u8 is_aead = 0;
- u32 salt_local = 0, salt_remote = 0;
- ip46_address_t local_ip, remote_ip;
- int rv;
+ ikev2_add_ipsec_tunnel_args_t a;
+
+ clib_memset (&a, 0, sizeof (a));
if (!child->r_proposals)
{
if (sa->is_initiator)
{
- ip46_address_set_ip4 (&local_ip, &sa->iaddr);
- ip46_address_set_ip4 (&remote_ip, &sa->raddr);
- proposals = child->i_proposals;
- local_spi = child->r_proposals[0].spi;
- remote_spi = child->i_proposals[0].spi;
+ ip_address_copy (&a.local_ip, &sa->iaddr);
+ ip_address_copy (&a.remote_ip, &sa->raddr);
+ proposals = child->r_proposals;
+ a.local_spi = child->r_proposals[0].spi;
+ a.remote_spi = child->i_proposals[0].spi;
}
else
{
- ip46_address_set_ip4 (&local_ip, &sa->raddr);
- ip46_address_set_ip4 (&remote_ip, &sa->iaddr);
- proposals = child->r_proposals;
- local_spi = child->i_proposals[0].spi;
- remote_spi = child->r_proposals[0].spi;
+ ip_address_copy (&a.local_ip, &sa->raddr);
+ ip_address_copy (&a.remote_ip, &sa->iaddr);
+ proposals = child->i_proposals;
+ a.local_spi = child->i_proposals[0].spi;
+ a.remote_spi = child->r_proposals[0].spi;
}
- flags = IPSEC_SA_FLAG_USE_ANTI_REPLAY;
+ 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 (ikev2_natt_active (sa))
+ 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)
- flags |= IPSEC_SA_FLAG_USE_ESN;
+ a.flags |= IPSEC_SA_FLAG_USE_ESN;
tr = ikev2_sa_get_td_for_type (proposals, IKEV2_TRANSFORM_TYPE_ENCR);
if (tr)
ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN);
return 1;
}
+ a.encr_type = encr_type;
if (!is_aead)
{
integ_type = IPSEC_INTEG_ALG_NONE;
}
+ a.integ_type = integ_type;
ikev2_calc_child_keys (sa, child);
if (sa->is_initiator)
{
- ipsec_mk_key (&loc_ikey, child->sk_ai, vec_len (child->sk_ai));
- ipsec_mk_key (&rem_ikey, child->sk_ar, vec_len (child->sk_ar));
- ipsec_mk_key (&loc_ckey, child->sk_ei, vec_len (child->sk_ei));
- ipsec_mk_key (&rem_ckey, child->sk_er, vec_len (child->sk_er));
+ ipsec_mk_key (&a.loc_ikey, child->sk_ai, vec_len (child->sk_ai));
+ ipsec_mk_key (&a.rem_ikey, child->sk_ar, vec_len (child->sk_ar));
+ ipsec_mk_key (&a.loc_ckey, child->sk_ei, vec_len (child->sk_ei));
+ ipsec_mk_key (&a.rem_ckey, child->sk_er, vec_len (child->sk_er));
if (is_aead)
{
- salt_remote = child->salt_er;
- salt_local = child->salt_ei;
+ a.salt_remote = child->salt_er;
+ a.salt_local = child->salt_ei;
}
+ a.dst_port = a.src_port = sa->ipsec_over_udp_port;
}
else
{
- ipsec_mk_key (&loc_ikey, child->sk_ar, vec_len (child->sk_ar));
- ipsec_mk_key (&rem_ikey, child->sk_ai, vec_len (child->sk_ai));
- ipsec_mk_key (&loc_ckey, child->sk_er, vec_len (child->sk_er));
- ipsec_mk_key (&rem_ckey, child->sk_ei, vec_len (child->sk_ei));
+ ipsec_mk_key (&a.loc_ikey, child->sk_ar, vec_len (child->sk_ar));
+ ipsec_mk_key (&a.rem_ikey, child->sk_ai, vec_len (child->sk_ai));
+ ipsec_mk_key (&a.loc_ckey, child->sk_er, vec_len (child->sk_er));
+ ipsec_mk_key (&a.rem_ckey, child->sk_ei, vec_len (child->sk_ei));
if (is_aead)
{
- salt_remote = child->salt_ei;
- salt_local = child->salt_er;
+ a.salt_remote = child->salt_ei;
+ a.salt_local = child->salt_er;
}
+ a.dst_port =
+ ikev2_natt_active (sa) ? 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);
}
}
- rv = ipip_add_tunnel (IPIP_TRANSPORT_IP4, ~0,
- &local_ip, &remote_ip, 0, 0, &child->sw_if_index);
+ if (thread_index & 0xffffffc0)
+ ikev2_elog_error ("error: thread index exceeds max range 0x3f!");
- child->local_sa = ikev2_mk_local_sa_id (child->sw_if_index);
- child->remote_sa = ikev2_mk_remote_sa_id (child->sw_if_index);
+ if (child_index & 0xfffff000 || sa_index & 0xfffff000)
+ ikev2_elog_error ("error: sa/child index exceeds max range 0xfff!");
- rv |= ipsec_sa_add_and_lock (child->local_sa,
- local_spi,
- IPSEC_PROTOCOL_ESP, encr_type,
- &loc_ckey, integ_type, &loc_ikey, flags,
- 0, salt_local, &local_ip, &remote_ip, NULL);
- rv |= ipsec_sa_add_and_lock (child->remote_sa,
- remote_spi,
- IPSEC_PROTOCOL_ESP, encr_type,
- &rem_ckey, integ_type, &rem_ikey,
- (flags | IPSEC_SA_FLAG_IS_INBOUND),
- 0, salt_remote, &remote_ip, &local_ip, NULL);
+ child->local_sa_id =
+ a.local_sa_id =
+ ikev2_mk_local_sa_id (sa_index, child_index, thread_index);
- u32 *sas_in = NULL;
- vec_add1 (sas_in, child->remote_sa);
- rv |=
- ipsec_tun_protect_update (child->sw_if_index, child->local_sa, sas_in);
+ 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));
return 0;
}
+typedef struct
+{
+ ip46_address_t local_ip;
+ 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)
+{
+ 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);
+
+ 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
+ {
+ 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
ikev2_delete_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa,
ikev2_child_sa_t * child)
{
- ipsec_tun_protect_del (child->sw_if_index);
- ipsec_sa_unlock_id (child->remote_sa);
- ipsec_sa_unlock_id (child->local_sa);
- ipip_del_tunnel (child->sw_if_index);
+ ikev2_del_ipsec_tunnel_args_t a;
+
+ clib_memset (&a, 0, sizeof (a));
+
+ if (sa->is_initiator)
+ {
+ ip_address_to_46 (&sa->iaddr, &a.local_ip);
+ ip_address_to_46 (&sa->raddr, &a.remote_ip);
+ }
+ else
+ {
+ ip_address_to_46 (&sa->raddr, &a.local_ip);
+ ip_address_to_46 (&sa->iaddr, &a.remote_ip);
+ }
+
+ 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));
return 0;
}
static u32
-ikev2_generate_message (ikev2_sa_t * sa, ike_header_t * ike, void *user)
+ikev2_generate_message (vlib_buffer_t *b, ikev2_sa_t *sa, ike_header_t *ike,
+ void *user, udp_header_t *udp, ikev2_stats_t *stats)
{
+ ikev2_main_t *km = &ikev2_main;
+ u16 buffer_data_size = vlib_buffer_get_default_data_size (km->vlib_main);
v8 *integ = 0;
ike_payload_header_t *ph;
u16 plen;
}
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),
+ &sa->raddr, 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, 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
{
- ikev2_set_state (sa, IKEV2_STATE_DELETED);
+ ikev2_set_state (sa, IKEV2_STATE_DELETED, ": unexpected IKE_AUTH");
goto done;
}
}
{
if (sa->del[0].protocol_id == IKEV2_PROTOCOL_IKE)
{
- if (sa->is_initiator)
+ if (ike_hdr_is_request (ike))
ikev2_payload_add_delete (chain, sa->del);
/* The response to a request that deletes the IKE SA is an empty
/* received N(AUTHENTICATION_FAILED) */
else if (sa->state == IKEV2_STATE_AUTH_FAILED)
{
- ikev2_set_state (sa, IKEV2_STATE_DELETED);
+ ikev2_set_state (sa, IKEV2_STATE_DELETED, ": auth failed");
goto done;
}
/* received unsupported critical payload */
vec_free (data);
sa->unsupported_cp = 0;
}
- /* else send empty response */
+ else
+ /* else send empty response */
+ {
+ if (ike_hdr_is_response (ike))
+ {
+ ASSERT (stats != 0);
+ stats->n_keepalives++;
+ sa->stats.n_keepalives++;
+ }
+ }
}
else if (ike->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA)
{
vec_free (data);
}
+ else if (vec_len (sa->rekey) > 0)
+ {
+ ikev2_payload_add_sa (chain, sa->rekey[0].r_proposal);
+ ikev2_payload_add_nonce (chain, sa->r_nonce);
+ ikev2_payload_add_ts (chain, sa->rekey[0].tsi, IKEV2_PAYLOAD_TSI);
+ ikev2_payload_add_ts (chain, sa->rekey[0].tsr, IKEV2_PAYLOAD_TSR);
+ vec_del1 (sa->rekey, 0);
+ }
+ else if (vec_len (sa->new_child) > 0)
+ {
+ ikev2_payload_add_sa (chain, sa->new_child[0].r_proposal);
+ ikev2_payload_add_nonce (chain, sa->r_nonce);
+ ikev2_payload_add_ts (chain, sa->new_child[0].tsi,
+ IKEV2_PAYLOAD_TSI);
+ ikev2_payload_add_ts (chain, sa->new_child[0].tsr,
+ IKEV2_PAYLOAD_TSR);
+ vec_del1 (sa->new_child, 0);
+ }
+ else if (sa->unsupported_cp)
+ {
+ u8 *data = vec_new (u8, 1);
+
+ data[0] = sa->unsupported_cp;
+ ikev2_payload_add_notify (
+ chain, IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD, data);
+ vec_free (data);
+ sa->unsupported_cp = 0;
+ }
else
{
- if (sa->rekey)
- {
- ikev2_payload_add_sa (chain, sa->rekey[0].r_proposal);
- ikev2_payload_add_nonce (chain, sa->r_nonce);
- ikev2_payload_add_ts (chain, sa->rekey[0].tsi,
- IKEV2_PAYLOAD_TSI);
- ikev2_payload_add_ts (chain, sa->rekey[0].tsr,
- IKEV2_PAYLOAD_TSR);
- vec_del1 (sa->rekey, 0);
- }
- else if (sa->unsupported_cp)
- {
- u8 *data = vec_new (u8, 1);
-
- data[0] = sa->unsupported_cp;
- ikev2_payload_add_notify (chain,
- IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD,
- data);
- vec_free (data);
- sa->unsupported_cp = 0;
- }
- else
- {
- ikev2_payload_add_notify (chain,
- IKEV2_NOTIFY_MSG_NO_ADDITIONAL_SAS,
- 0);
- }
+ ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NO_ADDITIONAL_SAS,
+ 0);
}
}
ike->version = IKE_VERSION_2;
ike->nextpayload = IKEV2_PAYLOAD_SK;
tlen = sizeof (*ike);
- if (sa->is_initiator)
- {
- ike->flags = IKEV2_HDR_FLAG_INITIATOR;
- sa->last_init_msg_id = clib_net_to_host_u32 (ike->msgid);
- }
- else
- {
- ike->flags = IKEV2_HDR_FLAG_RESPONSE;
- }
+ if (sa->is_initiator)
+ ike->flags |= IKEV2_HDR_FLAG_INITIATOR;
if (ike->exchange == IKEV2_EXCHANGE_SA_INIT)
{
tlen += vec_len (chain->data);
ike->nextpayload = chain->first_payload_type;
ike->length = clib_host_to_net_u32 (tlen);
+
+ if (tlen + b->current_length + b->current_data > buffer_data_size)
+ {
+ tlen = ~0;
+ goto done;
+ }
+
clib_memcpy_fast (ike->payload, chain->data, vec_len (chain->data));
/* store whole IKE payload - needed for PSK auth */
- vec_free (sa->last_sa_init_res_packet_data);
+ vec_reset_length (sa->last_sa_init_res_packet_data);
vec_add (sa->last_sa_init_res_packet_data, ike, tlen);
}
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;
+ if (tlen + b->current_length + b->current_data > buffer_data_size)
+ {
+ tlen = ~0;
+ goto done;
+ }
+
/* 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);
-
- /* store whole IKE payload - needed for retransmit */
- vec_free (sa->last_res_packet_data);
- vec_add (sa->last_res_packet_data, ike, tlen);
- }
-
-done:
- ikev2_payload_destroy_chain (chain);
- vec_free (integ);
+ if (is_aead)
+ {
+ if (!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))
+ {
+ tlen = ~0;
+ goto done;
+ }
+ }
+ else
+ {
+ if (!ikev2_encrypt_data
+ (ptd, sa, tr_encr, chain->data, ph->payload))
+ {
+ tlen = ~0;
+ goto done;
+ }
+ 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_reset_length (sa->last_res_packet_data);
+ vec_add (sa->last_res_packet_data, ike, tlen);
+ }
+
+done:
+ ikev2_payload_destroy_chain (chain);
+ vec_free (integ);
return tlen;
}
-static int
-ikev2_retransmit_sa_init (ike_header_t * ike,
- ip4_address_t iaddr, ip4_address_t raddr)
+static u32
+ikev2_retransmit_sa_init_one (ikev2_sa_t * sa, ike_header_t * ike,
+ ip_address_t iaddr, ip_address_t raddr,
+ u32 rlen)
{
- ikev2_main_t *km = &ikev2_main;
- ikev2_sa_t *sa;
- u32 thread_index = vlib_get_thread_index ();
+ int p = 0;
+ ike_header_t *tmp;
+ u8 payload = ike->nextpayload;
- /* *INDENT-OFF* */
- pool_foreach (sa, km->per_thread_data[thread_index].sas, ({
- if (sa->ispi == clib_net_to_host_u64(ike->ispi) &&
- sa->iaddr.as_u32 == iaddr.as_u32 &&
- sa->raddr.as_u32 == raddr.as_u32)
- {
- int p = 0;
- u32 len = clib_net_to_host_u32(ike->length);
- u8 payload = ike->nextpayload;
+ if (sa->ispi != clib_net_to_host_u64 (ike->ispi) ||
+ ip_address_cmp (&sa->iaddr, &iaddr) ||
+ ip_address_cmp (&sa->raddr, &raddr))
+ {
+ return 0;
+ }
- while (p < len && payload!= IKEV2_PAYLOAD_NONE) {
- ike_payload_header_t * ikep = (ike_payload_header_t *) &ike->payload[p];
- u32 plen = clib_net_to_host_u16(ikep->length);
+ while (p < rlen && payload != IKEV2_PAYLOAD_NONE)
+ {
+ ike_payload_header_t *ikep = (ike_payload_header_t *) & ike->payload[p];
+ u32 plen = clib_net_to_host_u16 (ikep->length);
- if (plen < sizeof(ike_payload_header_t))
- return -1;
+ if (plen < sizeof (ike_payload_header_t))
+ return ~0;
- if (payload == IKEV2_PAYLOAD_NONCE)
- {
- if (!memcmp(sa->i_nonce, ikep->payload, plen - sizeof(*ikep)))
- {
- /* req is retransmit */
- if (sa->state == IKEV2_STATE_SA_INIT)
- {
- ike_header_t * tmp;
- tmp = (ike_header_t*)sa->last_sa_init_res_packet_data;
- ike->ispi = tmp->ispi;
- ike->rspi = tmp->rspi;
- ike->nextpayload = tmp->nextpayload;
- ike->version = tmp->version;
- ike->exchange = tmp->exchange;
- ike->flags = tmp->flags;
- ike->msgid = tmp->msgid;
- 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);
- return 1;
- }
- /* else ignore req */
- else
- {
- clib_warning("IKE_SA_INIT ignore from %U to %U",
- format_ip4_address, &raddr,
- format_ip4_address, &iaddr);
- return -1;
- }
- }
- }
- payload = ikep->nextpayload;
- p+=plen;
- }
- }
- }));
+ if (payload == IKEV2_PAYLOAD_NONCE &&
+ !clib_memcmp (sa->i_nonce, ikep->payload, plen - sizeof (*ikep)))
+ {
+ /* req is retransmit */
+ if (sa->state == IKEV2_STATE_SA_INIT)
+ {
+ sa->stats.n_init_retransmit++;
+ tmp = (ike_header_t *) sa->last_sa_init_res_packet_data;
+ u32 slen = clib_net_to_host_u32 (tmp->length);
+ ike->ispi = tmp->ispi;
+ ike->rspi = tmp->rspi;
+ ike->nextpayload = tmp->nextpayload;
+ ike->version = tmp->version;
+ ike->exchange = tmp->exchange;
+ ike->flags = tmp->flags;
+ ike->msgid = tmp->msgid;
+ ike->length = tmp->length;
+ clib_memcpy_fast (ike->payload, tmp->payload,
+ slen - sizeof (*ike));
+ 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,
+ ip_addr_v4 (&raddr).as_u32,
+ ip_addr_v4 (&iaddr).as_u32);
+ return slen;
+ }
+ /* else ignore req */
+ else
+ {
+ 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,
+ ip_addr_v4 (&raddr).as_u32,
+ ip_addr_v4 (&iaddr).as_u32);
+ return ~0;
+ }
+ }
+ payload = ikep->nextpayload;
+ p += plen;
+ }
+
+ return 0;
+}
+
+static u32
+ikev2_retransmit_sa_init (ike_header_t * ike, ip_address_t iaddr,
+ ip_address_t raddr, u32 rlen)
+{
+ ikev2_sa_t *sa;
+ u32 res;
+ ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
+
+ /* *INDENT-OFF* */
+ pool_foreach (sa, ptd->sas) {
+ res = ikev2_retransmit_sa_init_one (sa, ike, iaddr, raddr, rlen);
+ if (res)
+ return res;
+ }
/* *INDENT-ON* */
/* req is not retransmit */
return 0;
}
-static int
+static u32
ikev2_retransmit_resp (ikev2_sa_t * sa, ike_header_t * ike)
{
+ if (ike_hdr_is_response (ike))
+ return 0;
+
u32 msg_id = clib_net_to_host_u32 (ike->msgid);
/* new req */
- if (msg_id > sa->last_msg_id)
+ if (msg_id > sa->last_msg_id || sa->last_msg_id == ~0)
{
sa->last_msg_id = msg_id;
return 0;
}
+
/* retransmitted req */
- else if (msg_id == sa->last_msg_id)
+ if (msg_id == sa->last_msg_id)
{
- ike_header_t *tmp;
- tmp = (ike_header_t *) sa->last_res_packet_data;
+ sa->stats.n_retransmit++;
+ ike_header_t *tmp = (ike_header_t *) sa->last_res_packet_data;
+ u32 slen = clib_net_to_host_u32 (tmp->length);
ike->ispi = tmp->ispi;
ike->rspi = tmp->rspi;
ike->nextpayload = tmp->nextpayload;
ike->flags = tmp->flags;
ike->msgid = tmp->msgid;
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);
- return 1;
+ clib_memcpy_fast (ike->payload, tmp->payload, slen - sizeof (*ike));
+ ikev2_elog_uint_peers (IKEV2_LOG_DEBUG, "IKE retransmit msgid %d",
+ msg_id, ip_addr_v4 (&sa->raddr).as_u32,
+ ip_addr_v4 (&sa->iaddr).as_u32);
+ return slen;
}
+
/* old req ignore */
+ ikev2_elog_uint_peers (IKEV2_LOG_DEBUG, "IKE req ignore msgid %d",
+ msg_id, ip_addr_v4 (&sa->raddr).as_u32,
+ ip_addr_v4 (&sa->iaddr).as_u32);
+ return ~0;
+}
+
+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_always_inline void
+ikev2_rewrite_v6_addrs (ikev2_sa_t * sa, ip6_header_t * ih)
+{
+ if (sa->is_initiator)
+ {
+ ip_address_copy_addr (&ih->dst_address, &sa->raddr);
+ ip_address_copy_addr (&ih->src_address, &sa->iaddr);
+ }
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;
+ ip_address_copy_addr (&ih->dst_address, &sa->iaddr);
+ ip_address_copy_addr (&ih->src_address, &sa->raddr);
}
}
+static_always_inline void
+ikev2_rewrite_v4_addrs (ikev2_sa_t * sa, ip4_header_t * ih)
+{
+ if (sa->is_initiator)
+ {
+ ip_address_copy_addr (&ih->dst_address, &sa->raddr);
+ ip_address_copy_addr (&ih->src_address, &sa->iaddr);
+ }
+ else
+ {
+ ip_address_copy_addr (&ih->dst_address, &sa->iaddr);
+ ip_address_copy_addr (&ih->src_address, &sa->raddr);
+ }
+}
-static uword
-ikev2_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+static_always_inline void
+ikev2_set_ip_address (ikev2_sa_t *sa, const void *iaddr, const void *raddr,
+ const ip_address_family_t af)
+{
+ ip_address_set (&sa->raddr, raddr, af);
+ ip_address_set (&sa->iaddr, iaddr, af);
+}
+
+static void
+ikev2_elog_uint_peers_addr (u32 exchange, ip4_header_t * ip4,
+ ip6_header_t * ip6, u8 is_ip4)
+{
+ u32 src, dst;
+ if (is_ip4)
+ {
+ src = ip4->src_address.as_u32;
+ dst = ip4->dst_address.as_u32;
+ }
+ else
+ {
+ src = ip6->src_address.as_u32[3];
+ dst = ip6->dst_address.as_u32[3];
+ }
+ ikev2_elog_uint_peers (IKEV2_LOG_WARNING, "IKEv2 exchange %d "
+ "received from %d.%d.%d.%d to %d.%d.%d.%d",
+ exchange, src, dst);
+}
+
+static void
+ikev2_generate_sa_init_data_and_log (ikev2_sa_t * sa)
+{
+ ikev2_generate_sa_error_t rc = ikev2_generate_sa_init_data (sa);
+
+ if (PREDICT_TRUE (rc == IKEV2_GENERATE_SA_INIT_OK))
+ return;
+
+ if (rc == IKEV2_GENERATE_SA_INIT_ERR_NO_DH)
+ ikev2_elog_error (IKEV2_GENERATE_SA_INIT_OK_ERR_NO_DH_STR);
+ else if (rc == IKEV2_GENERATE_SA_INIT_ERR_UNSUPPORTED_DH)
+ ikev2_elog_error (IKEV2_GENERATE_SA_INIT_OK_ERR_UNSUPP_STR);
+}
+
+static void
+ikev2_update_stats (vlib_main_t *vm, u32 node_index, ikev2_stats_t *s)
+{
+ vlib_node_increment_counter (vm, node_index, IKEV2_ERROR_KEEPALIVE,
+ s->n_keepalives);
+ vlib_node_increment_counter (vm, node_index, IKEV2_ERROR_REKEY_REQ,
+ s->n_rekey_req);
+ vlib_node_increment_counter (vm, node_index, IKEV2_ERROR_INIT_SA_REQ,
+ s->n_sa_init_req);
+ vlib_node_increment_counter (vm, node_index, IKEV2_ERROR_IKE_AUTH_REQ,
+ s->n_sa_auth_req);
+}
+
+static_always_inline uword
+ikev2_node_internal (vlib_main_t *vm, vlib_node_runtime_t *node,
+ vlib_frame_t *frame, u8 is_ip4, u8 natt)
{
- u32 n_left_from, *from, *to_next;
- ikev2_next_t next_index;
+ u32 n_left = frame->n_vectors, *from;
ikev2_main_t *km = &ikev2_main;
- u32 thread_index = vlib_get_thread_index ();
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
+ u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
+ ikev2_main_per_thread_data_t *ptd = ikev2_get_per_thread_data ();
+ ikev2_stats_t _stats, *stats = &_stats;
+ int res;
+
+ /* no NAT traversal for ip6 */
+ ASSERT (!natt || is_ip4);
+ clib_memset_u16 (stats, 0, sizeof (stats[0]) / sizeof (u16));
from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors;
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- u32 next0 = IKEV2_NEXT_ERROR_DROP;
- u32 sw_if_index0;
- ip4_header_t *ip40;
- udp_header_t *udp0;
- ike_header_t *ike0;
- ikev2_sa_t *sa0 = 0;
- ikev2_sa_t sa; /* temporary store for SA */
- int len = 0;
- int r;
-
- /* speculatively enqueue b0 to the current next frame */
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
+ vlib_get_buffers (vm, from, bufs, n_left);
+ b = bufs;
+
+ while (n_left > 0)
+ {
+ vlib_buffer_t *b0 = b[0];
+ next[0] = is_ip4 ? IKEV2_NEXT_IP4_ERROR_DROP
+ : IKEV2_NEXT_IP6_ERROR_DROP;
+ ip4_header_t *ip40 = 0;
+ ip6_header_t *ip60 = 0;
+ udp_header_t *udp0;
+ ike_header_t *ike0;
+ ikev2_sa_t *sa0 = 0;
+ ikev2_sa_t sa; /* temporary store for SA */
+ u32 rlen, slen = 0;
+ int ip_hdr_sz = 0;
+ int is_req = 0;
+
+ if (natt)
+ {
+ 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;
+ ip_hdr_sz = sizeof (*ip40);
+ }
+ else
+ {
+ u8 *ipx_hdr = b0->data + vnet_buffer (b0)->l3_hdr_offset;
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 (ike0->version != IKE_VERSION_2)
+ if (is_ip4)
{
- vlib_node_increment_counter (vm, ikev2_node.index,
- IKEV2_ERROR_NOT_IKEV2, 1);
- goto dispatch0;
+ ip40 = (ip4_header_t *) ipx_hdr;
+ ip_hdr_sz = sizeof (*ip40);
}
-
- if (ike0->exchange == IKEV2_EXCHANGE_SA_INIT)
+ else
{
- sa0 = &sa;
- clib_memset (sa0, 0, sizeof (*sa0));
+ ip60 = (ip6_header_t *) ipx_hdr;
+ ip_hdr_sz = sizeof (*ip60);
+ }
+ vlib_buffer_advance (b0, -ip_hdr_sz);
+ }
- if (ike0->flags & IKEV2_HDR_FLAG_INITIATOR)
- {
- if (ike0->rspi == 0)
- {
- sa0->raddr.as_u32 = ip40->dst_address.as_u32;
- sa0->iaddr.as_u32 = ip40->src_address.as_u32;
+ rlen = b0->current_length - ip_hdr_sz - sizeof (*udp0);
- r = ikev2_retransmit_sa_init (ike0, sa0->iaddr,
- sa0->raddr);
- if (r == 1)
- {
- vlib_node_increment_counter (vm, ikev2_node.index,
- IKEV2_ERROR_IKE_SA_INIT_RETRANSMIT,
- 1);
- len = clib_net_to_host_u32 (ike0->length);
- goto dispatch0;
- }
- else if (r == -1)
- {
- vlib_node_increment_counter (vm, ikev2_node.index,
- IKEV2_ERROR_IKE_SA_INIT_IGNORE,
- 1);
- goto dispatch0;
- }
+ /* check for non-esp marker */
+ if (natt)
+ {
+ ASSERT (*((u32 *) ike0) == 0);
+ ike0 =
+ (ike_header_t *) ((u8 *) ike0 + sizeof (ikev2_non_esp_marker));
+ rlen -= sizeof (ikev2_non_esp_marker);
+ }
- ikev2_process_sa_init_req (vm, sa0, ike0);
+ if (clib_net_to_host_u32 (ike0->length) != rlen)
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ IKEV2_ERROR_BAD_LENGTH, 1);
+ goto dispatch0;
+ }
- if (sa0->state == IKEV2_STATE_SA_INIT)
- {
- ikev2_sa_free_proposal_vector (&sa0->r_proposals);
- sa0->r_proposals =
- ikev2_select_proposal (sa0->i_proposals,
- IKEV2_PROTOCOL_IKE);
- ikev2_generate_sa_init_data (sa0);
- }
+ if (ike0->version != IKE_VERSION_2)
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ IKEV2_ERROR_NOT_IKEV2, 1);
+ goto dispatch0;
+ }
- if (sa0->state == IKEV2_STATE_SA_INIT
- || sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE)
- {
- len = ikev2_generate_message (sa0, ike0, 0);
- }
+ if (ike0->exchange == IKEV2_EXCHANGE_SA_INIT)
+ {
+ sa0 = &sa;
+ clib_memset (sa0, 0, sizeof (*sa0));
- if (sa0->state == IKEV2_STATE_SA_INIT)
- {
- /* add SA to the pool */
- pool_get (km->per_thread_data[thread_index].sas,
- sa0);
- clib_memcpy_fast (sa0, &sa, sizeof (*sa0));
- hash_set (km->
- per_thread_data[thread_index].sa_by_rspi,
- sa0->rspi,
- sa0 -
- km->per_thread_data[thread_index].sas);
- }
- else
- {
- ikev2_sa_free_all_vec (sa0);
- }
- }
- }
- else //received sa_init without initiator flag
+ if (ike_hdr_is_initiator (ike0))
+ {
+ sa0->stats.n_sa_init_req++;
+ stats->n_sa_init_req++;
+ if (ike0->rspi == 0)
{
- ikev2_process_sa_init_resp (vm, sa0, ike0);
+ if (is_ip4)
+ ikev2_set_ip_address (sa0, &ip40->src_address,
+ &ip40->dst_address, AF_IP4);
+ else
+ ikev2_set_ip_address (sa0, &ip60->src_address,
+ &ip60->dst_address, AF_IP6);
+
+ sa0->dst_port = clib_net_to_host_u16 (udp0->src_port);
+
+ slen =
+ ikev2_retransmit_sa_init (ike0, sa0->iaddr,
+ sa0->raddr, rlen);
+ if (slen)
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ ~0 ==
+ slen ?
+ IKEV2_ERROR_IKE_SA_INIT_IGNORE
+ :
+ IKEV2_ERROR_IKE_SA_INIT_RETRANSMIT,
+ 1);
+ goto dispatch0;
+ }
+
+ res = ikev2_process_sa_init_req (
+ vm, sa0, ike0, udp0, rlen,
+ vnet_buffer (b0)->sw_if_index[VLIB_RX]);
+ if (!res)
+ vlib_node_increment_counter (vm, node->node_index,
+ IKEV2_ERROR_MALFORMED_PACKET,
+ 1);
if (sa0->state == IKEV2_STATE_SA_INIT)
{
- 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_sa_free_proposal_vector (&sa0->r_proposals);
+ sa0->r_proposals =
+ ikev2_select_proposal (sa0->i_proposals,
+ IKEV2_PROTOCOL_IKE);
+ ikev2_generate_sa_init_data_and_log (sa0);
+ }
- ikev2_complete_sa_data (sa0, sai);
- ikev2_calc_keys (sa0);
- ikev2_sa_auth_init (sa0);
- len = ikev2_generate_message (sa0, ike0, 0);
- }
+ if (sa0->state == IKEV2_STATE_SA_INIT
+ || sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE)
+ {
+ ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
+ slen =
+ ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
+ if (~0 == slen)
+ vlib_node_increment_counter (vm, node->node_index,
+ IKEV2_ERROR_NO_BUFF_SPACE,
+ 1);
}
if (sa0->state == IKEV2_STATE_SA_INIT)
{
/* add SA to the pool */
- pool_get (km->per_thread_data[thread_index].sas, sa0);
+ pool_get (ptd->sas, sa0);
clib_memcpy_fast (sa0, &sa, sizeof (*sa0));
- hash_set (km->per_thread_data[thread_index].sa_by_rspi,
- sa0->rspi,
- sa0 - km->per_thread_data[thread_index].sas);
+ ikev2_init_sa (vm, sa0);
+ hash_set (ptd->sa_by_rspi, sa0->rspi, sa0 - ptd->sas);
}
else
{
}
}
}
- else if (ike0->exchange == IKEV2_EXCHANGE_IKE_AUTH)
+ else //received sa_init without initiator flag
{
- uword *p;
- p = hash_get (km->per_thread_data[thread_index].sa_by_rspi,
- clib_net_to_host_u64 (ike0->rspi));
- if (p)
- {
- sa0 =
- pool_elt_at_index (km->per_thread_data[thread_index].sas,
- p[0]);
+ if (is_ip4)
+ ikev2_set_ip_address (sa0, &ip40->dst_address,
+ &ip40->src_address, AF_IP4);
+ else
+ ikev2_set_ip_address (sa0, &ip60->dst_address,
+ &ip60->src_address, AF_IP6);
- r = ikev2_retransmit_resp (sa0, ike0);
- if (r == 1)
- {
- vlib_node_increment_counter (vm, ikev2_node.index,
- IKEV2_ERROR_IKE_REQ_RETRANSMIT,
- 1);
- len = clib_net_to_host_u32 (ike0->length);
- goto dispatch0;
- }
- else if (r == -1)
- {
- vlib_node_increment_counter (vm, ikev2_node.index,
- IKEV2_ERROR_IKE_REQ_IGNORE,
- 1);
- goto dispatch0;
- }
+ ikev2_process_sa_init_resp (vm, sa0, ike0, udp0, rlen);
- ikev2_process_auth_req (vm, sa0, ike0);
- ikev2_sa_auth (sa0);
- if (sa0->state == IKEV2_STATE_AUTHENTICATED)
+ if (sa0->state == IKEV2_STATE_SA_INIT)
+ {
+ is_req = 1;
+ ike0->exchange = IKEV2_EXCHANGE_IKE_AUTH;
+ uword *p = hash_get (km->sa_by_ispi, sa0->ispi);
+ if (p)
{
- ikev2_initial_contact_cleanup (sa0);
- ikev2_sa_match_ts (sa0);
- if (sa0->state != IKEV2_STATE_TS_UNACCEPTABLE)
- ikev2_create_tunnel_interface (km->vnet_main, sa0,
- &sa0->childs[0]);
- }
+ ikev2_sa_t *sai = pool_elt_at_index (km->sais, p[0]);
- if (sa0->is_initiator)
- {
- uword *p = hash_get (km->sa_by_ispi, ike0->ispi);
- if (p)
+ if (clib_atomic_bool_cmp_and_swap
+ (&sai->init_response_received, 0, 1))
{
- 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_complete_sa_data (sa0, sai);
+ ikev2_calc_keys (sa0);
+ ikev2_sa_auth_init (sa0);
+ ike0->flags = IKEV2_HDR_FLAG_INITIATOR;
+ ike0->msgid =
+ clib_net_to_host_u32 (sai->last_init_msg_id);
+ sa0->last_init_msg_id = sai->last_init_msg_id + 1;
+ slen = ikev2_generate_message (b0, sa0, ike0, 0,
+ udp0, stats);
+ if (~0 == slen)
+ vlib_node_increment_counter (vm,
+ node->node_index,
+ IKEV2_ERROR_NO_BUFF_SPACE,
+ 1);
+ }
+ else
+ {
+ /* we've already processed sa-init response */
+ sa0->state = IKEV2_STATE_UNKNOWN;
}
}
- else
- {
- len = ikev2_generate_message (sa0, ike0, 0);
- }
+ }
+
+ if (sa0->state == IKEV2_STATE_SA_INIT)
+ {
+ /* add SA to the pool */
+ pool_get (ptd->sas, sa0);
+ clib_memcpy_fast (sa0, &sa, sizeof (*sa0));
+ hash_set (ptd->sa_by_rspi, sa0->rspi, sa0 - ptd->sas);
+ }
+ else
+ {
+ ikev2_sa_free_all_vec (sa0);
}
}
- else if (ike0->exchange == IKEV2_EXCHANGE_INFORMATIONAL)
+ }
+ else if (ike0->exchange == IKEV2_EXCHANGE_IKE_AUTH)
+ {
+ uword *p;
+ p = hash_get (ptd->sa_by_rspi, clib_net_to_host_u64 (ike0->rspi));
+ if (p)
{
- uword *p;
- p = hash_get (km->per_thread_data[thread_index].sa_by_rspi,
- clib_net_to_host_u64 (ike0->rspi));
- if (p)
+ sa0 = pool_elt_at_index (ptd->sas, p[0]);
+ slen = ikev2_retransmit_resp (sa0, ike0);
+ if (slen)
{
- sa0 =
- pool_elt_at_index (km->per_thread_data[thread_index].sas,
- p[0]);
+ vlib_node_increment_counter (vm, node->node_index,
+ ~0 ==
+ slen ?
+ IKEV2_ERROR_IKE_REQ_IGNORE
+ :
+ IKEV2_ERROR_IKE_REQ_RETRANSMIT,
+ 1);
+ goto dispatch0;
+ }
- r = ikev2_retransmit_resp (sa0, ike0);
- if (r == 1)
- {
- vlib_node_increment_counter (vm, ikev2_node.index,
- IKEV2_ERROR_IKE_REQ_RETRANSMIT,
- 1);
- len = clib_net_to_host_u32 (ike0->length);
- goto dispatch0;
- }
- else if (r == -1)
- {
- vlib_node_increment_counter (vm, ikev2_node.index,
- IKEV2_ERROR_IKE_REQ_IGNORE,
- 1);
- goto dispatch0;
- }
+ sa0->dst_port = clib_net_to_host_u16 (udp0->src_port);
+ res = ikev2_process_auth_req (vm, sa0, ike0, rlen);
+ if (res)
+ ikev2_sa_auth (sa0);
+ else
+ vlib_node_increment_counter (vm, node->node_index,
+ IKEV2_ERROR_MALFORMED_PACKET, 1);
+ if (sa0->state == IKEV2_STATE_AUTHENTICATED)
+ {
+ ikev2_initial_contact_cleanup (ptd, sa0);
+ ikev2_sa_match_ts (sa0);
+ if (sa0->state != IKEV2_STATE_TS_UNACCEPTABLE)
+ ikev2_create_tunnel_interface (vm, sa0,
+ &sa0->childs[0],
+ p[0], 0, 0);
+ }
+
+ if (sa0->is_initiator)
+ {
+ sa0->last_msg_id = ~0;
+ ikev2_del_sa_init (sa0->ispi);
+ }
+ else
+ {
+ sa0->stats.n_sa_auth_req++;
+ stats->n_sa_auth_req++;
+ ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
+ slen =
+ ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
+ if (~0 == slen)
+ vlib_node_increment_counter (vm, node->node_index,
+ IKEV2_ERROR_NO_BUFF_SPACE,
+ 1);
+ }
+ }
+ }
+ else if (ike0->exchange == IKEV2_EXCHANGE_INFORMATIONAL)
+ {
+ uword *p;
+ p = hash_get (ptd->sa_by_rspi, clib_net_to_host_u64 (ike0->rspi));
+ if (p)
+ {
+ sa0 = pool_elt_at_index (ptd->sas, p[0]);
+ slen = ikev2_retransmit_resp (sa0, ike0);
+ if (slen)
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ ~0 ==
+ slen ?
+ IKEV2_ERROR_IKE_REQ_IGNORE
+ :
+ IKEV2_ERROR_IKE_REQ_RETRANSMIT,
+ 1);
+ goto dispatch0;
+ }
+
+ res = ikev2_process_informational_req (vm, sa0, ike0, rlen);
+ if (!res)
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ IKEV2_ERROR_MALFORMED_PACKET,
+ 1);
+ slen = ~0;
+ goto dispatch0;
+ }
- ikev2_process_informational_req (vm, sa0, ike0);
- if (sa0->del)
+ if (sa0->del)
+ {
+ if (sa0->del[0].protocol_id != IKEV2_PROTOCOL_IKE)
{
- if (sa0->del[0].protocol_id != IKEV2_PROTOCOL_IKE)
- {
- ikev2_delete_t *d, *tmp, *resp = 0;
- vec_foreach (d, sa0->del)
+ ikev2_delete_t *d, *tmp, *resp = 0;
+ vec_foreach (d, sa0->del)
+ {
+ ikev2_child_sa_t *ch_sa;
+ ch_sa = ikev2_sa_get_child (sa0, d->spi,
+ d->protocol_id,
+ !sa0->is_initiator);
+ if (ch_sa)
{
- ikev2_child_sa_t *ch_sa;
- ch_sa = ikev2_sa_get_child (sa0, d->spi,
- d->protocol_id,
- !sa0->is_initiator);
- if (ch_sa)
+ ikev2_delete_tunnel_interface (km->vnet_main,
+ sa0, ch_sa);
+ if (!sa0->is_initiator)
{
- ikev2_delete_tunnel_interface (km->vnet_main,
- sa0, ch_sa);
- if (!sa0->is_initiator)
- {
- vec_add2 (resp, tmp, 1);
- tmp->protocol_id = d->protocol_id;
- tmp->spi = ch_sa->r_proposals[0].spi;
- }
- ikev2_sa_del_child_sa (sa0, ch_sa);
+ vec_add2 (resp, tmp, 1);
+ tmp->protocol_id = d->protocol_id;
+ tmp->spi = ch_sa->r_proposals[0].spi;
}
+ ikev2_sa_del_child_sa (sa0, ch_sa);
}
- if (!sa0->is_initiator)
- {
- vec_free (sa0->del);
- sa0->del = resp;
- }
+ }
+ if (!sa0->is_initiator)
+ {
+ vec_free (sa0->del);
+ sa0->del = resp;
}
}
- if (!sa0->is_initiator)
- {
- len = ikev2_generate_message (sa0, ike0, 0);
- }
+ }
+ if (ike_hdr_is_request (ike0))
+ {
+ ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
+ slen =
+ ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
+ if (~0 == slen)
+ vlib_node_increment_counter (vm, node->node_index,
+ IKEV2_ERROR_NO_BUFF_SPACE,
+ 1);
}
}
- else if (ike0->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA)
+ }
+ else if (ike0->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA)
+ {
+ uword *p;
+ p = hash_get (ptd->sa_by_rspi, clib_net_to_host_u64 (ike0->rspi));
+ if (p)
{
- uword *p;
- p = hash_get (km->per_thread_data[thread_index].sa_by_rspi,
- clib_net_to_host_u64 (ike0->rspi));
- if (p)
+ sa0 = pool_elt_at_index (ptd->sas, p[0]);
+ slen = ikev2_retransmit_resp (sa0, ike0);
+ if (slen)
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ ~0 ==
+ slen ?
+ IKEV2_ERROR_IKE_REQ_IGNORE
+ :
+ IKEV2_ERROR_IKE_REQ_RETRANSMIT,
+ 1);
+ goto dispatch0;
+ }
+
+ res = ikev2_process_create_child_sa_req (vm, sa0, ike0, rlen);
+ if (!res)
{
- sa0 =
- pool_elt_at_index (km->per_thread_data[thread_index].sas,
- p[0]);
+ vlib_node_increment_counter (vm, node->node_index,
+ IKEV2_ERROR_MALFORMED_PACKET,
+ 1);
+ slen = ~0;
+ goto dispatch0;
+ }
- r = ikev2_retransmit_resp (sa0, ike0);
- if (r == 1)
+ if (sa0->rekey)
+ {
+ if (sa0->rekey[0].protocol_id != IKEV2_PROTOCOL_IKE)
{
- vlib_node_increment_counter (vm, ikev2_node.index,
- IKEV2_ERROR_IKE_REQ_RETRANSMIT,
- 1);
- len = clib_net_to_host_u32 (ike0->length);
- goto dispatch0;
+ 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 (vm, sa0, child, p[0],
+ child - sa0->childs, 1);
}
- else if (r == -1)
+ if (ike_hdr_is_response (ike0))
{
- vlib_node_increment_counter (vm, ikev2_node.index,
- IKEV2_ERROR_IKE_REQ_IGNORE,
- 1);
- goto dispatch0;
+ vec_free (sa0->rekey);
}
-
- ikev2_process_create_child_sa_req (vm, sa0, ike0);
- if (sa0->rekey)
+ else
{
- if (sa0->rekey[0].protocol_id != IKEV2_PROTOCOL_IKE)
- {
- ikev2_child_sa_t *child;
- vec_add2 (sa0->childs, child, 1);
- 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, sa0,
- child);
- }
- if (sa0->is_initiator)
- {
- vec_del1 (sa0->rekey, 0);
- }
- else
- {
- len = ikev2_generate_message (sa0, ike0, 0);
- }
+ stats->n_rekey_req++;
+ sa0->stats.n_rekey_req++;
+ ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
+ slen =
+ ikev2_generate_message (b0, sa0, ike0, 0, udp0, stats);
+ if (~0 == slen)
+ vlib_node_increment_counter (vm, node->node_index,
+ IKEV2_ERROR_NO_BUFF_SPACE,
+ 1);
}
}
+ else if (sa0->new_child)
+ {
+ ikev2_child_sa_t *c;
+ vec_add2 (sa0->childs, c, 1);
+ memset (c, 0, sizeof (*c));
+ c->r_proposals = sa0->new_child[0].r_proposal;
+ c->i_proposals = sa0->new_child[0].i_proposal;
+ c->tsi = sa0->new_child[0].tsi;
+ c->tsr = sa0->new_child[0].tsr;
+ ikev2_create_tunnel_interface (vm, sa0, c, p[0],
+ c - sa0->childs, 0);
+ if (ike_hdr_is_request (ike0))
+ {
+ ike0->flags = IKEV2_HDR_FLAG_RESPONSE;
+ slen =
+ ikev2_generate_message (b0, sa0, ike0, 0, udp0, 0);
+ if (~0 == slen)
+ vlib_node_increment_counter (
+ vm, node->node_index, IKEV2_ERROR_NO_BUFF_SPACE, 1);
+ }
+ }
+ }
+ }
+ else
+ {
+ ikev2_elog_uint_peers_addr (ike0->exchange, ip40, ip60, is_ip4);
+ }
+
+ dispatch0:
+ /* if we are sending packet back, rewrite headers */
+ if (slen && ~0 != slen)
+ {
+ if (is_ip4)
+ {
+ next[0] = IKEV2_NEXT_IP4_LOOKUP;
+ ikev2_rewrite_v4_addrs (sa0, ip40);
}
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);
+ next[0] = IKEV2_NEXT_IP6_LOOKUP;
+ ikev2_rewrite_v6_addrs (sa0, ip60);
}
- dispatch0:
- /* if we are sending packet back, rewrite headers */
- if (len)
+ if (is_req)
{
- next0 = IKEV2_NEXT_IP4_LOOKUP;
- if (sa0->is_initiator)
- {
- ip40->dst_address.as_u32 = sa0->raddr.as_u32;
- ip40->src_address.as_u32 = sa0->iaddr.as_u32;
- }
- else
+ 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)
+ && ikev2_natt_active (sa0))
{
- ip40->dst_address.as_u32 = sa0->iaddr.as_u32;
- ip40->src_address.as_u32 = sa0->raddr.as_u32;
+ if (!natt)
+ slen = ikev2_insert_non_esp_marker (ike0, slen);
}
- 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);
}
- /* delete sa */
- if (sa0 && (sa0->state == IKEV2_STATE_DELETED ||
- sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE))
+ else
{
- ikev2_child_sa_t *c;
+ if (natt)
+ slen += sizeof (ikev2_non_esp_marker);
- vec_foreach (c, sa0->childs)
- ikev2_delete_tunnel_interface (km->vnet_main, sa0, c);
-
- ikev2_delete_sa (sa0);
+ u16 tp = udp0->dst_port;
+ udp0->dst_port = udp0->src_port;
+ udp0->src_port = tp;
}
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ udp0->length = clib_host_to_net_u16 (slen + sizeof (udp_header_t));
+ udp0->checksum = 0;
+ b0->current_length = slen + ip_hdr_sz + sizeof (udp_header_t);
+ if (is_ip4)
{
- ikev2_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
+ ip40->length = clib_host_to_net_u16 (b0->current_length);
+ ip40->checksum = ip4_header_checksum (ip40);
}
+ else
+ {
+ ip60->payload_length =
+ clib_host_to_net_u16 (b0->current_length - sizeof (*ip60));
+ }
+ }
+ /* delete sa */
+ if (sa0 && (sa0->state == IKEV2_STATE_DELETED ||
+ sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE))
+ {
+ ikev2_child_sa_t *c;
+
+ vec_foreach (c, sa0->childs)
+ ikev2_delete_tunnel_interface (km->vnet_main, sa0, c);
+
+ ikev2_delete_sa (ptd, sa0);
+ }
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+
+ ikev2_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ t->next_index = next[0];
+ }
+ n_left -= 1;
+ next += 1;
+ b += 1;
+ }
+
+ ikev2_update_stats (vm, node->node_index, stats);
+ vlib_node_increment_counter (vm, node->node_index,
+ IKEV2_ERROR_PROCESSED, frame->n_vectors);
+ vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
+ return frame->n_vectors;
+}
+
+static uword
+ikev2_ip4 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return ikev2_node_internal (vm, node, frame, 1 /* is_ip4 */, 0);
+}
+
+static uword
+ikev2_ip4_natt (vlib_main_t *vm, vlib_node_runtime_t *node,
+ vlib_frame_t *frame)
+{
+ return ikev2_node_internal (vm, node, frame, 1 /* is_ip4 */, 1 /* natt */);
+}
+
+static uword
+ikev2_ip6 (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return ikev2_node_internal (vm, node, frame, 0 /* is_ip4 */, 0);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ikev2_node_ip4,static) = {
+ .function = ikev2_ip4,
+ .name = "ikev2-ip4",
+ .vector_size = sizeof (u32),
+ .format_trace = format_ikev2_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = IKEV2_N_ERROR,
+ .error_counters = ikev2_error_counters,
+
+ .n_next_nodes = IKEV2_IP4_N_NEXT,
+ .next_nodes = {
+ [IKEV2_NEXT_IP4_LOOKUP] = "ip4-lookup",
+ [IKEV2_NEXT_IP4_ERROR_DROP] = "error-drop",
+ },
+};
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
- }
+VLIB_REGISTER_NODE (ikev2_node_ip4_natt,static) = {
+ .function = ikev2_ip4_natt,
+ .name = "ikev2-ip4-natt",
+ .vector_size = sizeof (u32),
+ .format_trace = format_ikev2_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
+ .n_errors = IKEV2_N_ERROR,
+ .error_counters = ikev2_error_counters,
- vlib_node_increment_counter (vm, ikev2_node.index,
- IKEV2_ERROR_PROCESSED, frame->n_vectors);
- return frame->n_vectors;
-}
+ .n_next_nodes = IKEV2_IP4_N_NEXT,
+ .next_nodes = {
+ [IKEV2_NEXT_IP4_LOOKUP] = "ip4-lookup",
+ [IKEV2_NEXT_IP4_ERROR_DROP] = "error-drop",
+ },
+};
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (ikev2_node,static) = {
- .function = ikev2_node_fn,
- .name = "ikev2",
+VLIB_REGISTER_NODE (ikev2_node_ip6,static) = {
+ .function = ikev2_ip6,
+ .name = "ikev2-ip6",
.vector_size = sizeof (u32),
.format_trace = format_ikev2_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN(ikev2_error_strings),
- .error_strings = ikev2_error_strings,
-
- .n_next_nodes = IKEV2_N_NEXT,
+ .n_errors = IKEV2_N_ERROR,
+ .error_counters = ikev2_error_counters,
+ .n_next_nodes = IKEV2_IP6_N_NEXT,
.next_nodes = {
- [IKEV2_NEXT_IP4_LOOKUP] = "ip4-lookup",
- [IKEV2_NEXT_ERROR_DROP] = "error-drop",
+ [IKEV2_NEXT_IP6_LOOKUP] = "ip6-lookup",
+ [IKEV2_NEXT_IP6_ERROR_DROP] = "error-drop",
},
};
/* *INDENT-ON* */
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)
+ikev2_send_ike (vlib_main_t * vm, ip_address_t * src, ip_address_t * dst,
+ u32 bi0, u32 len, u16 src_port, u16 dst_port, u32 sw_if_index)
{
ip4_header_t *ip40;
+ ip6_header_t *ip60;
udp_header_t *udp0;
vlib_buffer_t *b0;
vlib_frame_t *f;
b0 = vlib_get_buffer (vm, bi0);
vlib_buffer_advance (b0, -sizeof (udp_header_t));
udp0 = vlib_buffer_get_current (b0);
- vlib_buffer_advance (b0, -sizeof (ip4_header_t));
- ip40 = vlib_buffer_get_current (b0);
-
-
- ip40->ip_version_and_header_length = 0x45;
- ip40->tos = 0;
- ip40->fragment_id = 0;
- ip40->flags_and_fragment_offset = 0;
- ip40->ttl = 0xff;
- 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);
+ if (ip_addr_version (dst) == AF_IP4)
+ {
+ vlib_buffer_advance (b0, -sizeof (ip4_header_t));
+ ip40 = vlib_buffer_get_current (b0);
+ ip40->ip_version_and_header_length = 0x45;
+ ip40->tos = 0;
+ ip40->fragment_id = 0;
+ ip40->flags_and_fragment_offset = 0;
+ ip40->ttl = 0xff;
+ ip40->protocol = IP_PROTOCOL_UDP;
+ ip40->dst_address.as_u32 = ip_addr_v4 (dst).as_u32;
+ ip40->src_address.as_u32 = ip_addr_v4 (src).as_u32;
+ 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);
+ }
+ else
+ {
+ vlib_buffer_advance (b0, -sizeof (ip6_header_t));
+ ip60 = vlib_buffer_get_current (b0);
+
+ b0->current_length = len + sizeof (*ip60) + sizeof (udp_header_t);
+ ip60->ip_version_traffic_class_and_flow_label =
+ clib_host_to_net_u32 (0x6 << 28);
+ ip60->payload_length =
+ clib_host_to_net_u16 (b0->current_length - sizeof (*ip60));
+ ip60->protocol = IP_PROTOCOL_UDP;
+ ip60->hop_limit = 0xff;
+ clib_memcpy_fast (ip60->src_address.as_u8, ip_addr_v6 (src).as_u8,
+ sizeof (ip60->src_address));
+ clib_memcpy_fast (ip60->dst_address.as_u8, ip_addr_v6 (dst).as_u8,
+ sizeof (ip60->src_address));
+ }
+
+ b0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0;
+
+ u32 next_index = (ip_addr_version (dst) == AF_IP4) ?
+ ip4_lookup_node.index : ip6_lookup_node.index;
/* send the request */
- f = vlib_get_frame_to_node (vm, ip4_lookup_node.index);
+ f = vlib_get_frame_to_node (vm, next_index);
to_next = vlib_frame_vector_args (f);
to_next[0] = bi0;
f->n_vectors = 1;
- vlib_put_frame_to_node (vm, ip4_lookup_node.index, f);
+ vlib_put_frame_to_node (vm, next_index, f);
}
static u32
-ikev2_get_new_ike_header_buff (vlib_main_t * vm, ike_header_t ** ike)
+ikev2_get_new_ike_header_buff (vlib_main_t * vm, vlib_buffer_t ** b)
{
u32 bi0;
if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
{
- *ike = 0;
+ *b = 0;
return 0;
}
- vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
- *ike = vlib_buffer_get_current (b0);
+ *b = vlib_get_buffer (vm, bi0);
return bi0;
}
{
ikev2_main_t *km = &ikev2_main;
+ if (km->pkey)
+ EVP_PKEY_free (km->pkey);
km->pkey = ikev2_load_key_file (file);
if (km->pkey == NULL)
return clib_error_return (0, "load key '%s' failed", file);
return 0;
}
+static_always_inline vnet_api_error_t
+ikev2_register_udp_port (ikev2_profile_t * p, u16 port)
+{
+ ipsec_register_udp_port (port);
+ p->ipsec_over_udp_port = port;
+ return 0;
+}
+
+static_always_inline void
+ikev2_unregister_udp_port (ikev2_profile_t * p)
+{
+ if (p->ipsec_over_udp_port == IPSEC_UDP_PORT_NONE)
+ return;
+
+ ipsec_unregister_udp_port (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, u8 send_notification)
+{
+ ikev2_main_t *km = &ikev2_main;
+ ip_address_t *src, *dst;
+ vlib_buffer_t *b0;
+ ikev2_child_sa_t *c;
+
+ /* Create the Initiator notification for IKE SA removal */
+ ike_header_t *ike0;
+ u32 bi0 = 0;
+ int len;
+
+ vec_resize (sa->del, 1);
+ sa->del->protocol_id = IKEV2_PROTOCOL_IKE;
+ sa->del->spi = sa->ispi;
+
+ if (send_notification)
+ {
+ bi0 = ikev2_get_new_ike_header_buff (vm, &b0);
+ if (!bi0)
+ {
+ ikev2_log_error ("buffer alloc failure");
+ goto delete_sa;
+ }
+
+ ike0 = vlib_buffer_get_current (b0);
+ ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL;
+ ike0->ispi = clib_host_to_net_u64 (sa->ispi);
+ ike0->rspi = clib_host_to_net_u64 (sa->rspi);
+ ike0->flags = 0;
+ ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id);
+ sa->last_init_msg_id += 1;
+ len = ikev2_generate_message (b0, sa, ike0, 0, 0, 0);
+ if (~0 == len)
+ return;
+
+ if (ikev2_natt_active (sa))
+ 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;
+ }
+
+ ikev2_send_ike (vm, src, dst, bi0, len,
+ ikev2_get_port (sa), sa->dst_port, 0);
+ }
+
+delete_sa:
+ /* delete local SA */
+ 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;
+
+ /* *INDENT-OFF* */
+ pool_foreach (sa, km->sais) {
+ if (pi == sa->profile_index)
+ vec_add1 (del_sai, sa - km->sais);
+ }
+ /* *INDENT-ON* */
+
+ vec_foreach (sai, del_sai)
+ {
+ sa = pool_elt_at_index (km->sais, sai[0]);
+ ikev2_sa_free_all_vec (sa);
+ hash_unset (km->sa_by_ispi, sa->ispi);
+ pool_put (km->sais, sa);
+ }
+ vec_reset_length (del_sai);
+
+ 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, 1);
+ }
+
+ vec_reset_length (del_sai);
+ }
+
+ vec_free (del_sai);
+}
+
+static void
+ikev2_profile_responder_free (ikev2_responder_t *r)
+{
+ vec_free (r->hostname);
+}
+
+static void
+ikev2_profile_free (ikev2_profile_t * p)
+{
+ vec_free (p->name);
+
+ vec_free (p->auth.data);
+ if (p->auth.key)
+ EVP_PKEY_free (p->auth.key);
+
+ ikev2_profile_responder_free (&p->responder);
+
+ vec_free (p->loc_id.data);
+ vec_free (p->rem_id.data);
+}
+
clib_error_t *
ikev2_add_del_profile (vlib_main_t * vm, u8 * name, int is_add)
{
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);
}
if (!p)
return clib_error_return (0, "policy %v does not exists", name);
- vec_free (p->name);
+ ikev2_unregister_udp_port (p);
+ ikev2_cleanup_profile_sessions (km, p);
+
+ ikev2_profile_free (p);
pool_put (km->profiles, p);
mhash_unset (&km->profile_index_by_name, name, 0);
}
r = clib_error_return (0, "unknown profile %v", name);
return r;
}
+
+ if (p->auth.key)
+ EVP_PKEY_free (p->auth.key);
vec_free (p->auth.data);
+
p->auth.method = auth_method;
p->auth.data = vec_dup (auth_data);
p->auth.hex = data_hex_format;
if (auth_method == IKEV2_AUTH_METHOD_RSA_SIG)
{
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;
}
+static int
+ikev2_is_id_supported (u8 id_type)
+{
+ return (id_type == IKEV2_ID_TYPE_ID_IPV4_ADDR ||
+ id_type == IKEV2_ID_TYPE_ID_IPV6_ADDR ||
+ id_type == IKEV2_ID_TYPE_ID_RFC822_ADDR ||
+ id_type == IKEV2_ID_TYPE_ID_FQDN);
+}
+
clib_error_t *
ikev2_set_profile_id (vlib_main_t * vm, u8 * name, u8 id_type, u8 * data,
int is_local)
ikev2_profile_t *p;
clib_error_t *r;
- if (id_type > IKEV2_ID_TYPE_ID_RFC822_ADDR
- && id_type < IKEV2_ID_TYPE_ID_KEY_ID)
+ if (!ikev2_is_id_supported (id_type))
{
r = clib_error_return (0, "unsupported identity type %U",
format_ikev2_id_type, id_type);
return 0;
}
+static_always_inline void
+ikev2_set_ts_type (ikev2_ts_t * ts, const ip_address_t * addr)
+{
+ if (ip_addr_version (addr) == AF_IP4)
+ ts->ts_type = TS_IPV4_ADDR_RANGE;
+ else
+ ts->ts_type = TS_IPV6_ADDR_RANGE;
+}
+
+static_always_inline void
+ikev2_set_ts_addrs (ikev2_ts_t * ts, const ip_address_t * start,
+ const ip_address_t * end)
+{
+ ip_address_copy (&ts->start_addr, start);
+ ip_address_copy (&ts->end_addr, end);
+}
+
clib_error_t *
ikev2_set_profile_ts (vlib_main_t * vm, u8 * name, u8 protocol_id,
- u16 start_port, u16 end_port, ip4_address_t start_addr,
- ip4_address_t end_addr, int is_local)
+ u16 start_port, u16 end_port, ip_address_t start_addr,
+ ip_address_t end_addr, int is_local)
{
ikev2_profile_t *p;
clib_error_t *r;
return r;
}
+ if (ip_addr_version (&start_addr) != ip_addr_version (&end_addr))
+ return clib_error_return (0, "IP address version mismatch!");
+
if (is_local)
{
- p->loc_ts.start_addr.as_u32 = start_addr.as_u32;
- p->loc_ts.end_addr.as_u32 = end_addr.as_u32;
+ ikev2_set_ts_addrs (&p->loc_ts, &start_addr, &end_addr);
p->loc_ts.start_port = start_port;
p->loc_ts.end_port = end_port;
p->loc_ts.protocol_id = protocol_id;
- p->loc_ts.ts_type = 7;
+ ikev2_set_ts_type (&p->loc_ts, &start_addr);
}
else
{
- p->rem_ts.start_addr.as_u32 = start_addr.as_u32;
- p->rem_ts.end_addr.as_u32 = end_addr.as_u32;
+ ikev2_set_ts_addrs (&p->rem_ts, &start_addr, &end_addr);
p->rem_ts.start_port = start_port;
p->rem_ts.end_port = end_port;
p->rem_ts.protocol_id = protocol_id;
- p->rem_ts.ts_type = 7;
+ ikev2_set_ts_type (&p->rem_ts, &start_addr);
}
return 0;
}
+clib_error_t *
+ikev2_set_profile_responder_hostname (vlib_main_t *vm, u8 *name, u8 *hostname,
+ 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->responder.is_resolved = 0;
+ p->responder.sw_if_index = sw_if_index;
+ p->responder.hostname = vec_dup (hostname);
+
+ return 0;
+}
clib_error_t *
ikev2_set_profile_responder (vlib_main_t * vm, u8 * name,
- u32 sw_if_index, ip4_address_t ip4)
+ u32 sw_if_index, ip_address_t addr)
{
ikev2_profile_t *p;
clib_error_t *r;
return r;
}
+ p->responder.is_resolved = 1;
p->responder.sw_if_index = sw_if_index;
- p->responder.ip4 = ip4;
+ ip_address_copy (&p->responder.addr, &addr);
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);
+ vnet_api_error_t rv = 0;
+
+ 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
+ {
+ 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,
return 0;
}
+static int
+ikev2_get_if_address (u32 sw_if_index, ip_address_family_t af,
+ ip_address_t * out_addr)
+{
+ ip4_address_t *if_ip4;
+ ip6_address_t *if_ip6;
+
+ if (af == AF_IP4)
+ {
+ if_ip4 = ip4_interface_first_address (&ip4_main, sw_if_index, 0);
+ if (if_ip4)
+ {
+ ip_address_set (out_addr, if_ip4, AF_IP4);
+ return 1;
+ }
+ }
+ else
+ {
+ if_ip6 = ip6_interface_first_address (&ip6_main, sw_if_index);
+ if (if_ip6)
+ {
+ ip_address_set (out_addr, if_ip6, AF_IP6);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static clib_error_t *
+ikev2_resolve_responder_hostname (vlib_main_t *vm, ikev2_responder_t *r)
+{
+ ikev2_main_t *km = &ikev2_main;
+ dns_cache_entry_t *ep = 0;
+ dns_pending_request_t _t0, *t0 = &_t0;
+ dns_resolve_name_t _rn, *rn = &_rn;
+ int rv;
+
+ if (!km->dns_resolve_name)
+ return clib_error_return (0, "cannot load symbols from dns plugin");
+
+ t0->request_type = DNS_API_PENDING_NAME_TO_IP;
+ rv = km->dns_resolve_name (r->hostname, &ep, t0, rn);
+ if (rv < 0)
+ return clib_error_return (0, "dns lookup failure");
+
+ if (ep == 0)
+ return 0;
+
+ ip_address_copy (&r->addr, &rn->address);
+ r->is_resolved = 1;
+ return 0;
+}
+
clib_error_t *
ikev2_initiate_sa_init (vlib_main_t * vm, u8 * name)
{
ikev2_profile_t *p;
clib_error_t *r;
- ip4_main_t *im = &ip4_main;
ikev2_main_t *km = &ikev2_main;
+ vlib_buffer_t *b0;
+ ike_header_t *ike0;
+ u32 bi0 = 0;
+ int len = sizeof (ike_header_t), valid_ip = 0;
+ ip_address_t src_if_ip = ip_address_initializer;
+
+ p = ikev2_profile_index_by_name (name);
+
+ if (!p)
+ {
+ r = clib_error_return (0, "unknown profile %v", name);
+ return r;
+ }
+
+ if (p->responder.sw_if_index == ~0 ||
+ (ip_address_is_zero (&p->responder.addr) &&
+ vec_len (p->responder.hostname) == 0))
+ {
+ r = clib_error_return (0, "responder not set for profile %v", name);
+ return r;
+ }
+
+ if (!p->responder.is_resolved)
+ {
+ /* try to resolve using dns plugin
+ * success does not mean we have resolved the name */
+ r = ikev2_resolve_responder_hostname (vm, &p->responder);
+ if (r)
+ return r;
+ }
- p = ikev2_profile_index_by_name (name);
+ if (p->responder.is_resolved &&
+ ikev2_get_if_address (p->responder.sw_if_index,
+ ip_addr_version (&p->responder.addr), &src_if_ip))
+ {
+ valid_ip = 1;
+ }
- if (!p)
+ /* Prepare the SA and the IKE payload */
+ ikev2_sa_t sa;
+ clib_memset (&sa, 0, sizeof (ikev2_sa_t));
+ ikev2_payload_chain_t *chain = 0;
+ ikev2_payload_new_chain (chain);
+
+ /* Build the IKE proposal payload */
+ ikev2_sa_proposal_t *proposals = 0;
+ ikev2_set_initiator_proposals (vm, &sa, &p->ike_ts, &proposals, 1);
+ proposals[0].proposal_num = 1;
+ proposals[0].protocol_id = IKEV2_PROTOCOL_IKE;
+
+ /* Add and then cleanup proposal data */
+ ikev2_payload_add_sa (chain, proposals);
+ ikev2_sa_free_proposal_vector (&proposals);
+
+ sa.is_initiator = 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;
+ if (p->natt_disabled)
+ sa.natt_state = IKEV2_NATT_DISABLED;
+ 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_error_t rc = ikev2_generate_sa_init_data (&sa);
+ if (rc != IKEV2_GENERATE_SA_INIT_OK)
{
- r = clib_error_return (0, "unknown profile %v", name);
- return r;
+ ikev2_sa_free_all_vec (&sa);
+ ikev2_payload_destroy_chain (chain);
+ return clib_error_return (0, "%U", format_ikev2_gen_sa_error, rc);
}
- if (p->responder.sw_if_index == ~0 || p->responder.ip4.data_u32 == 0)
+ ikev2_payload_add_ke (chain, sa.dh_group, sa.i_dh_data);
+ ikev2_payload_add_nonce (chain, sa.i_nonce);
+
+ /* Build the child SA proposal */
+ vec_resize (sa.childs, 1);
+ ikev2_set_initiator_proposals (vm, &sa, &p->esp_ts,
+ &sa.childs[0].i_proposals, 0);
+ sa.childs[0].i_proposals[0].proposal_num = 1;
+ sa.childs[0].i_proposals[0].protocol_id = IKEV2_PROTOCOL_ESP;
+ 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_sha1 = ikev2_compute_nat_sha1 (
+ clib_host_to_net_u64 (sa.ispi), clib_host_to_net_u64 (sa.rspi), &src_if_ip,
+ clib_host_to_net_u16 (IKEV2_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),
+ &p->responder.addr,
+ clib_host_to_net_u16 (sa.dst_port));
+ ikev2_payload_add_notify (chain,
+ IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP,
+ nat_detection_sha1);
+ vec_free (nat_detection_sha1);
+
+ u8 *sig_hash_algo = vec_new (u8, 8);
+ u64 tmpsig = clib_host_to_net_u64 (0x0001000200030004);
+ clib_memcpy_fast (sig_hash_algo, &tmpsig, sizeof (tmpsig));
+ ikev2_payload_add_notify (chain,
+ IKEV2_NOTIFY_MSG_SIGNATURE_HASH_ALGORITHMS,
+ sig_hash_algo);
+ vec_free (sig_hash_algo);
+
+ bi0 = ikev2_get_new_ike_header_buff (vm, &b0);
+ if (!bi0)
{
- r = clib_error_return (0, "responder not set for profile %v", name);
- return r;
+ ikev2_sa_free_all_vec (&sa);
+ ikev2_payload_destroy_chain (chain);
+ char *errmsg = "buffer alloc failure";
+ ikev2_log_error (errmsg);
+ return clib_error_return (0, errmsg);
}
+ ike0 = vlib_buffer_get_current (b0);
+ /* Buffer update and boilerplate */
+ len += vec_len (chain->data);
+ ike0->nextpayload = chain->first_payload_type;
+ ike0->length = clib_host_to_net_u32 (len);
+ clib_memcpy_fast (ike0->payload, chain->data, vec_len (chain->data));
+ ikev2_payload_destroy_chain (chain);
- /* Create the Initiator Request */
- {
- ike_header_t *ike0;
- u32 bi0 = 0;
- ip_lookup_main_t *lm = &im->lookup_main;
- u32 if_add_index0;
- int len = sizeof (ike_header_t);
-
- /* Get own iface IP */
- if_add_index0 =
- lm->if_address_pool_index_by_sw_if_index[p->responder.sw_if_index];
- ip_interface_address_t *if_add =
- pool_elt_at_index (lm->if_address_pool, if_add_index0);
- ip4_address_t *if_ip = ip_interface_address_get_address (lm, if_add);
-
- bi0 = ikev2_get_new_ike_header_buff (vm, &ike0);
-
- /* Prepare the SA and the IKE payload */
- ikev2_sa_t sa;
- clib_memset (&sa, 0, sizeof (ikev2_sa_t));
- ikev2_payload_chain_t *chain = 0;
- ikev2_payload_new_chain (chain);
-
- /* Build the IKE proposal payload */
- ikev2_sa_proposal_t *proposals = 0;
- ikev2_set_initiator_proposals (vm, &sa, &p->ike_ts, &proposals, 1);
- proposals[0].proposal_num = 1;
- proposals[0].protocol_id = IKEV2_PROTOCOL_IKE;
-
- /* Add and then cleanup proposal data */
- ikev2_payload_add_sa (chain, proposals);
- ikev2_sa_free_proposal_vector (&proposals);
-
- sa.is_initiator = 1;
- sa.profile_index = km->profiles - p;
- sa.is_profile_index_set = 1;
- sa.state = IKEV2_STATE_SA_INIT;
- 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);
-
- /* Build the child SA proposal */
- vec_resize (sa.childs, 1);
- ikev2_set_initiator_proposals (vm, &sa, &p->esp_ts,
- &sa.childs[0].i_proposals, 0);
- sa.childs[0].i_proposals[0].proposal_num = 1;
- sa.childs[0].i_proposals[0].protocol_id = IKEV2_PROTOCOL_ESP;
- 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);
- 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);
- ikev2_payload_add_notify (chain,
- IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP,
- nat_detection_sha1);
- vec_free (nat_detection_sha1);
-
- u8 *sig_hash_algo = vec_new (u8, 8);
- u64 tmpsig = clib_host_to_net_u64 (0x0001000200030004);
- clib_memcpy_fast (sig_hash_algo, &tmpsig, sizeof (tmpsig));
- ikev2_payload_add_notify (chain,
- IKEV2_NOTIFY_MSG_SIGNATURE_HASH_ALGORITHMS,
- sig_hash_algo);
- vec_free (sig_hash_algo);
-
-
- /* Buffer update and boilerplate */
- len += vec_len (chain->data);
- ike0->nextpayload = chain->first_payload_type;
- ike0->length = clib_host_to_net_u32 (len);
- clib_memcpy_fast (ike0->payload, chain->data, vec_len (chain->data));
- ikev2_payload_destroy_chain (chain);
-
- ike0->version = IKE_VERSION_2;
- ike0->flags = IKEV2_HDR_FLAG_INITIATOR;
- ike0->exchange = IKEV2_EXCHANGE_SA_INIT;
- ike0->ispi = sa.ispi;
- ike0->rspi = 0;
- ike0->msgid = 0;
-
- /* store whole IKE payload - needed for PSK auth */
- vec_free (sa.last_sa_init_req_packet_data);
- vec_add (sa.last_sa_init_req_packet_data, ike0, len);
-
- /* add data to the SA then add it to the pool */
- sa.iaddr.as_u32 = if_ip->as_u32;
- 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.i_auth.method = p->auth.method;
- sa.i_auth.hex = p->auth.hex;
- sa.i_auth.data = vec_dup (p->auth.data);
- vec_add (sa.childs[0].tsi, &p->loc_ts, 1);
- vec_add (sa.childs[0].tsr, &p->rem_ts, 1);
-
- /* 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);
+ ike0->version = IKE_VERSION_2;
+ ike0->flags = IKEV2_HDR_FLAG_INITIATOR;
+ ike0->exchange = IKEV2_EXCHANGE_SA_INIT;
+ ike0->ispi = clib_host_to_net_u64 (sa.ispi);
+ ike0->rspi = 0;
+ ike0->msgid = 0;
+ sa.last_init_msg_id += 1;
- }
+ /* store whole IKE payload - needed for PSK auth */
+ vec_reset_length (sa.last_sa_init_req_packet_data);
+ vec_add (sa.last_sa_init_req_packet_data, ike0, len);
+
+ /* add data to the SA then add it to the pool */
+ ip_address_copy (&sa.iaddr, &src_if_ip);
+ ip_address_copy (&sa.raddr, &p->responder.addr);
+ 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 (0, &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);
+
+ if (valid_ip)
+ {
+ ikev2_send_ike (vm, &src_if_ip, &p->responder.addr, bi0, len, IKEV2_PORT,
+ sa.dst_port, sa.sw_if_index);
+
+ ikev2_elog_exchange
+ ("ispi %lx rspi %lx IKEV2_EXCHANGE_SA_INIT sent to ",
+ clib_host_to_net_u64 (sa0->ispi), 0,
+ ip_addr_v4 (&p->responder.addr).as_u32,
+ ip_addr_version (&p->responder.addr) == AF_IP4);
+ }
return 0;
}
ikev2_main_t *km = &ikev2_main;
ike_header_t *ike0;
u32 bi0 = 0;
+ vlib_buffer_t *b0;
int len;
- bi0 = ikev2_get_new_ike_header_buff (vm, &ike0);
-
+ bi0 = ikev2_get_new_ike_header_buff (vm, &b0);
+ if (!bi0)
+ {
+ ikev2_log_error ("buffer alloc failure");
+ return;
+ }
+ ike0 = vlib_buffer_get_current (b0);
ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL;
ike0->ispi = clib_host_to_net_u64 (sa->ispi);
ike0->rspi = clib_host_to_net_u64 (sa->rspi);
+ ike0->flags = 0;
vec_resize (sa->del, 1);
sa->del->protocol_id = IKEV2_PROTOCOL_ESP;
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);
+ ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id);
+ sa->last_init_msg_id += 1;
+ len = ikev2_generate_message (b0, sa, ike0, 0, 0, 0);
+ if (~0 == len)
+ return;
- ikev2_send_ike (vm, &sa->iaddr, &sa->raddr, bi0, len);
+ if (ikev2_natt_active (sa))
+ 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);
if (fchild)
break;
/* *INDENT-OFF* */
- pool_foreach (sa, tkm->sas, ({
+ pool_foreach (sa, tkm->sas) {
fchild = ikev2_sa_get_child(sa, ispi, IKEV2_PROTOCOL_ESP, 1);
if (fchild)
{
fsa = sa;
break;
}
- }));
+ }
/* *INDENT-ON* */
}
if (fsa)
break;
/* *INDENT-OFF* */
- pool_foreach (sa, tkm->sas, ({
+ pool_foreach (sa, tkm->sas) {
if (sa->ispi == ispi)
{
fsa = sa;
ftkm = tkm;
break;
}
- }));
+ }
/* *INDENT-ON* */
}
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, 1);
return 0;
}
{
/* Create the Initiator request for create child SA */
ike_header_t *ike0;
+ vlib_buffer_t *b0;
u32 bi0 = 0;
int len;
+ bi0 = ikev2_get_new_ike_header_buff (vm, &b0);
+ if (!bi0)
+ {
+ ikev2_log_error ("buffer alloc failure");
+ return;
+ }
- bi0 = ikev2_get_new_ike_header_buff (vm, &ike0);
-
-
+ ike0 = vlib_buffer_get_current (b0);
ike0->version = IKE_VERSION_2;
ike0->flags = IKEV2_HDR_FLAG_INITIATOR;
ike0->exchange = IKEV2_EXCHANGE_CREATE_CHILD_SA;
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);
+ ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id);
+ sa->last_init_msg_id += 1;
ikev2_rekey_t *rekey;
+ vec_reset_length (sa->rekey);
vec_add2 (sa->rekey, rekey, 1);
ikev2_sa_proposal_t *proposals = vec_dup (csa->i_proposals);
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 (b0, sa, ike0, proposals, 0, 0);
+ if (~0 == len)
+ return;
+
+ if (ikev2_natt_active (sa))
+ 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);
}
if (fchild)
break;
/* *INDENT-OFF* */
- pool_foreach (sa, tkm->sas, ({
+ pool_foreach (sa, tkm->sas) {
fchild = ikev2_sa_get_child(sa, ispi, IKEV2_PROTOCOL_ESP, 1);
if (fchild)
{
fsa = sa;
break;
}
- }));
+ }
/* *INDENT-ON* */
}
return 0;
}
+static int
+ikev2_sa_sw_if_match (ikev2_sa_t * sa, u32 sw_if_index)
+{
+ return (sa->sw_if_index == sw_if_index) && sa->is_initiator;
+}
+
+static void
+ikev2_sa_del (ikev2_profile_t * p, u32 sw_if_index)
+{
+ u64 *ispi, *ispi_vec = 0;
+ ikev2_sa_t *sa, **sap, **sa_vec = 0;
+ ikev2_main_t *km = &ikev2_main;
+ ikev2_main_per_thread_data_t *tkm;
+ p->responder.sw_if_index = ~0;
+
+ vec_foreach (tkm, km->per_thread_data)
+ {
+ /* *INDENT-OFF* */
+ pool_foreach (sa, tkm->sas) {
+ if (ikev2_sa_sw_if_match (sa, sw_if_index))
+ vec_add1 (sa_vec, sa);
+ }
+ /* *INDENT-ON* */
+
+ vec_foreach (sap, sa_vec)
+ {
+ ikev2_initiate_delete_ike_sa_internal (km->vlib_main, tkm, *sap, 0);
+ }
+ vec_reset_length (sa_vec);
+ }
+ vec_free (sa_vec);
+
+ /* *INDENT-OFF* */
+ pool_foreach (sa, km->sais) {
+ if (ikev2_sa_sw_if_match (sa, sw_if_index))
+ vec_add1 (ispi_vec, sa->ispi);
+ }
+ /* *INDENT-ON* */
+
+ vec_foreach (ispi, ispi_vec)
+ {
+ ikev2_del_sa_init_from_main (ispi);
+ }
+
+ vec_free (ispi_vec);
+}
+
+static clib_error_t *
+ikev2_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
+{
+ ikev2_main_t *km = &ikev2_main;
+ ikev2_profile_t *p;
+
+ if (is_add)
+ return 0;
+
+ /* *INDENT-OFF* */
+ pool_foreach (p, km->profiles) {
+ if (p->responder.sw_if_index == sw_if_index)
+ ikev2_sa_del (p, sw_if_index);
+ }
+ /* *INDENT-ON* */
+
+ return 0;
+}
+
+VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ikev2_sw_interface_add_del);
+
clib_error_t *
ikev2_init (vlib_main_t * vm)
{
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);
- udp_register_dst_port (vm, 500, ikev2_node.index, 1);
+ udp_register_dst_port (vm, IKEV2_PORT, ikev2_node_ip4.index, 1);
+ udp_register_dst_port (vm, IKEV2_PORT, ikev2_node_ip6.index, 0);
+ udp_register_dst_port (vm, IKEV2_PORT_NATT, ikev2_node_ip4.index, 1);
+ udp_register_dst_port (vm, IKEV2_PORT_NATT, ikev2_node_ip6.index, 0);
+ vlib_punt_hdl_t punt_hdl = vlib_punt_client_register ("ikev2-ip4-natt");
+ vlib_punt_register (punt_hdl, ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0],
+ "ikev2-ip4-natt");
ikev2_cli_reference ();
+ km->dns_resolve_name =
+ vlib_get_plugin_symbol ("dns_plugin.so", "dns_resolve_name");
+ if (!km->dns_resolve_name)
+ ikev2_log_error ("cannot load symbols from dns plugin");
+
+ 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"),
+VLIB_INIT_FUNCTION (ikev2_init) = {
+ .runs_after = VLIB_INITS ("ipsec_init", "ipsec_punt_init", "dns_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)
+ {
+ local_ip = to_ip46 (ip_addr_version (&sa->iaddr),
+ ip_addr_bytes (&sa->iaddr));
+ remote_ip = to_ip46 (ip_addr_version (&sa->raddr),
+ ip_addr_bytes (&sa->raddr));
+ }
+ else
+ {
+ local_ip = to_ip46 (ip_addr_version (&sa->raddr),
+ ip_addr_bytes (&sa->raddr));
+ remote_ip = to_ip46 (ip_addr_version (&sa->iaddr),
+ ip_addr_bytes (&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);
+ int rv = ipsec_tun_protect_update (sw_if_index, NULL,
+ csa->local_sa_id, sas_in);
+ if (rv)
+ vec_free (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;
+}
+
+clib_error_t *
+ikev2_profile_natt_disable (u8 * name)
+{
+ ikev2_profile_t *p = ikev2_profile_index_by_name (name);
+ if (!p)
+ return clib_error_return (0, "unknown profile %v", name);
+
+ p->natt_disabled = 1;
+ return 0;
+}
+
static void
ikev2_mngr_process_ipsec_sa (ipsec_sa_t * ipsec_sa)
{
if (fchild)
break;
/* *INDENT-OFF* */
- pool_foreach (sa, tkm->sas, ({
+ pool_foreach (sa, tkm->sas) {
fchild = ikev2_sa_get_child(sa, ipsec_sa->spi, IKEV2_PROTOCOL_ESP, 1);
if (fchild)
{
fsa = sa;
break;
}
- }));
+ }
/* *INDENT-ON* */
}
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 vlib_node_registration_t ikev2_mngr_process_node;
+static void
+ikev2_process_pending_sa_init_one (vlib_main_t *vm, ikev2_main_t *km,
+ ikev2_sa_t *sa)
+{
+ ikev2_profile_t *p;
+ u32 bi0;
+ u8 *nat_sha, *np;
+ p = pool_elt_at_index (km->profiles, sa->profile_index);
+
+ if (!p->responder.is_resolved)
+ {
+ clib_error_t *r = ikev2_resolve_responder_hostname (vm, &p->responder);
+ if (r)
+ {
+ clib_error_free (r);
+ return;
+ }
+
+ if (!p->responder.is_resolved)
+ return;
+
+ ip_address_copy (&sa->raddr, &p->responder.addr);
+
+ /* update nat detection destination hash */
+ np = ikev2_find_ike_notify_payload (
+ (ike_header_t *) sa->last_sa_init_req_packet_data,
+ IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP);
+ if (np)
+ {
+ nat_sha = ikev2_compute_nat_sha1 (
+ clib_host_to_net_u64 (sa->ispi), clib_host_to_net_u64 (sa->rspi),
+ &sa->raddr, clib_host_to_net_u16 (sa->dst_port));
+ clib_memcpy_fast (np, nat_sha, vec_len (nat_sha));
+ vec_free (nat_sha);
+ }
+ }
+
+ if (ip_address_is_zero (&sa->iaddr))
+ {
+ if (!ikev2_get_if_address (p->responder.sw_if_index,
+ ip_addr_version (&p->responder.addr),
+ &sa->iaddr))
+ return;
+
+ /* update NAT detection payload */
+ np =
+ ikev2_find_ike_notify_payload
+ ((ike_header_t *) sa->last_sa_init_req_packet_data,
+ IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP);
+ if (np)
+ {
+ nat_sha =
+ ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa->ispi),
+ clib_host_to_net_u64 (sa->rspi),
+ &sa->iaddr,
+ clib_host_to_net_u16 (IKEV2_PORT));
+ clib_memcpy_fast (np, nat_sha, vec_len (nat_sha));
+ vec_free (nat_sha);
+ }
+ }
+
+ 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);
+}
+
+static void
+ikev2_process_pending_sa_init (vlib_main_t *vm, 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;
+
+ ikev2_process_pending_sa_init_one (vm, km, sa);
+ }));
+ /* *INDENT-ON* */
+}
+
+static void
+ikev2_send_informational_request (ikev2_sa_t * sa)
+{
+ ikev2_main_t *km = &ikev2_main;
+ ip_address_t *src, *dst;
+ ike_header_t *ike0;
+ vlib_buffer_t *b0;
+ u32 bi0 = 0;
+ u16 dp;
+ int len;
+
+ bi0 = ikev2_get_new_ike_header_buff (km->vlib_main, &b0);
+ if (!bi0)
+ {
+ ikev2_log_error ("buffer alloc failure");
+ return;
+ }
+
+ ike0 = vlib_buffer_get_current (b0);
+ 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);
+ ike0->flags = 0;
+ sa->last_init_msg_id += 1;
+ len = ikev2_generate_message (b0, sa, ike0, 0, 0, 0);
+ if (~0 == len)
+ return;
+
+ if (ikev2_natt_active (sa))
+ 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);
+}
+
+void
+ikev2_disable_dpd (void)
+{
+ ikev2_main_t *km = &ikev2_main;
+ km->dpd_disabled = 1;
+}
+
+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->keys_generated)
+ 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)
{
- u8 req_sent = 0;
- vlib_process_wait_for_event_or_clock (vm, 1);
+ vlib_process_wait_for_event_or_clock (vm, 2);
vlib_process_get_events (vm, NULL);
/* process ike child sas */
vec_foreach (tkm, km->per_thread_data)
{
ikev2_sa_t *sa;
+ u32 *to_be_deleted = 0;
+
/* *INDENT-OFF* */
- pool_foreach (sa, tkm->sas, ({
+ pool_foreach (sa, tkm->sas) {
ikev2_child_sa_t *c;
- vec_foreach (c, sa->childs)
+ u8 del_old_ids = 0;
+
+ if (sa->state != IKEV2_STATE_AUTHENTICATED)
+ continue;
+
+ if (sa->old_remote_id_present && 0 > sa->old_id_expiration)
{
- req_sent |= ikev2_mngr_process_child_sa(sa, c);
+ sa->old_remote_id_present = 0;
+ del_old_ids = 1;
}
- }));
+ else
+ sa->old_id_expiration -= 1;
+
+ vec_foreach (c, sa->childs)
+ ikev2_mngr_process_child_sa(sa, c, del_old_ids);
+
+ if (!km->dpd_disabled && 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)
+ {
+ clib_error_t *e = ikev2_initiate_sa_init (vm, p->name);
+ if (e)
+ {
+ ikev2_log_error ("%U", format_clib_error, e);
+ clib_error_free (e);
+ }
+ }
+ }
+ }
+ vec_free (to_be_deleted);
}
/* process ipsec sas */
ipsec_sa_t *sa;
/* *INDENT-OFF* */
- pool_foreach (sa, im->sad, ({
- ikev2_mngr_process_ipsec_sa(sa);
- }));
- /* *INDENT-ON* */
-
- if (req_sent)
+ pool_foreach (sa, ipsec_sa_pool)
{
- vlib_process_wait_for_event_or_clock (vm, 5);
- vlib_process_get_events (vm, NULL);
- req_sent = 0;
+ ikev2_mngr_process_ipsec_sa (sa);
}
+ /* *INDENT-ON* */
+ ikev2_process_pending_sa_init (vm, km);
}
return 0;
}
Code Review / vpp.git / blobdiff