X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fikev2%2Fikev2.c;h=ad727a9e3555b4834cdc80c327f86491a8077b30;hb=d7fc12f07;hp=c69ac913c48e8f8d4334c891afa94a6c99fd1f87;hpb=a8af7cf253c4e8ab9ba1a2cfed50f6236fea3a62;p=vpp.git diff --git a/src/plugins/ikev2/ikev2.c b/src/plugins/ikev2/ikev2.c index c69ac913c48..ad727a9e355 100644 --- a/src/plugins/ikev2/ikev2.c +++ b/src/plugins/ikev2/ikev2.c @@ -18,7 +18,6 @@ #include #include #include -#include #include #include #include @@ -62,8 +61,6 @@ format_ikev2_trace (u8 * s, va_list * args) 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 ") \ @@ -71,7 +68,9 @@ _(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") \ -_(BAD_LENGTH, "Bad packet length") +_(BAD_LENGTH, "Bad packet length") \ +_(MALFORMED_PACKET, "Malformed packet") \ +_(NO_BUFF_SPACE, "No buffer space") typedef enum { @@ -90,16 +89,23 @@ static char *ikev2_error_strings[] = { 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 sa->natt ? IKEV2_PORT_NATT : IKEV2_PORT; + return ikev2_natt_active (sa) ? IKEV2_PORT_NATT : IKEV2_PORT; } static_always_inline int @@ -261,7 +267,7 @@ ikev2_sa_free_proposal_vector (ikev2_sa_proposal_t ** v) vec_free (p->transforms); } vec_free (*v); -}; +} static void ikev2_sa_free_child_sa (ikev2_child_sa_t * c) @@ -337,19 +343,17 @@ ikev2_sa_free_all_vec (ikev2_sa_t * sa) } 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); } } @@ -415,14 +419,15 @@ ikev2_complete_sa_data (ikev2_sa_t * sa, ikev2_sa_t * sai) 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->tun_itf = sai->tun_itf; sa->is_tun_itf_set = sai->is_tun_itf_set; + sa->natt_state = sai->natt_state; sa->i_id.data = _(sai->i_id.data); sa->r_id.data = _(sai->r_id.data); sa->i_auth.method = sai->i_auth.method; @@ -625,31 +630,75 @@ ikev2_calc_child_keys (ikev2_sa_t * sa, ikev2_child_sa_t * child) } static_always_inline u8 * -ikev2_compute_nat_sha1 (u64 ispi, u64 rspi, u32 ip, u16 port) +ikev2_compute_nat_sha1 (u64 ispi, u64 rspi, ip_address_t * ia, u16 port) { - /* ispi, rspi, ip, port */ - u8 buf[8 + 8 + 4 + 2]; + 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, sizeof (ip)); - clib_memcpy_fast (&buf[8 + 8 + 4], &port, sizeof (port)); - SHA1 (buf, sizeof (buf), res); + 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 void -ikev2_process_sa_init_req (vlib_main_t * vm, ikev2_sa_t * sa, - ike_header_t * ike, udp_header_t * udp, u32 len) +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) { + u8 nonce[IKEV2_NONCE_SIZE]; int p = 0; u8 payload = ike->nextpayload; + ike_payload_header_t *ikep; + u16 plen; ikev2_elog_exchange ("ispi %lx rspi %lx IKE_INIT request received " - "from %d.%d.%d.%d", - clib_net_to_host_u64 (ike->ispi), - clib_net_to_host_u64 (ike->rspi), sa->iaddr.as_u32); + "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); @@ -657,44 +706,46 @@ ikev2_process_sa_init_req (vlib_main_t * vm, ikev2_sa_t * sa, 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 (clib_net_to_host_u64 (ike->ispi), 0, - clib_net_to_host_u32 (sa-> - iaddr.as_u32), - udp->src_port); + 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))) { - sa->natt = 1; + 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); } @@ -703,14 +754,12 @@ ikev2_process_sa_init_req (vlib_main_t * vm, ikev2_sa_t * sa, else if (n->msg_type == IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP) { - u8 *dst_sha = - ikev2_compute_nat_sha1 (clib_net_to_host_u64 (ike->ispi), 0, - clib_net_to_host_u32 (sa-> - raddr.as_u32), - udp->dst_port); + 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))) { - sa->natt = 1; + 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); } @@ -730,7 +779,7 @@ ikev2_process_sa_init_req (vlib_main_t * vm, ikev2_sa_t * sa, { ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); sa->unsupported_cp = payload; - return; + return 0; } } @@ -739,38 +788,47 @@ ikev2_process_sa_init_req (vlib_main_t * vm, ikev2_sa_t * sa, } 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, udp_header_t * udp, u32 len) +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; u8 payload = ike->nextpayload; + 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 %d.%d.%d.%d", sa->ispi, sa->rspi, - sa->raddr.as_u32); + "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_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); @@ -780,25 +838,24 @@ ikev2_process_sa_init_resp (vlib_main_t * vm, ikev2_sa_t * sa, } 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, - clib_net_to_host_u32 - (sa->raddr.as_u32), + 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))) { @@ -810,13 +867,13 @@ ikev2_process_sa_init_resp (vlib_main_t * vm, ikev2_sa_t * sa, else if (n->msg_type == IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP) { - u8 *dst_sha = ikev2_compute_nat_sha1 (ike->ispi, - ike->rspi, - sa->iaddr.as_u32, + 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))) { - sa->natt = 1; + 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); } @@ -846,15 +903,15 @@ ikev2_process_sa_init_resp (vlib_main_t * vm, ikev2_sa_t * sa, } static u8 * -ikev2_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike, u8 * payload, - u32 len) +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, *plaintext = 0; - u8 *hmac = 0; + 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 = @@ -863,16 +920,19 @@ ikev2_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike, u8 * payload, 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) + 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) @@ -910,24 +970,29 @@ ikev2_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike, u8 * payload, u32 aad_len = ikep->payload - aad; u8 *tag = ikep->payload + plen; - plaintext = ikev2_decrypt_aead_data (ptd, sa, tr_encr, ikep->payload, - plen, aad, aad_len, tag); + 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 { - if (len < tr_integ->key_trunc) + 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, len - tr_integ->key_trunc); + (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 (memcmp (hmac, &ikep->payload[plen], 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); @@ -935,7 +1000,13 @@ ikev2_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike, u8 * payload, } vec_free (hmac); - plaintext = ikev2_decrypt_data (ptd, sa, tr_encr, ikep->payload, plen); + 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; + } } return plaintext; @@ -950,44 +1021,41 @@ ikev2_is_id_equal (ikev2_id_t * i1, ikev2_id_t * i2) if (vec_len (i1->data) != vec_len (i2->data)) return 0; - if (memcmp (i1->data, i2->data, vec_len (i1->data))) + 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 (!ikev2_is_id_equal (&tmp->i_id, &sa->i_id) - || !ikev2_is_id_equal(&tmp->r_id, &sa->r_id)) - continue; + 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 - km->per_thread_data[thread_index].sas); + 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); @@ -995,31 +1063,85 @@ ikev2_initial_contact_cleanup (ikev2_sa_t * sa) } static void -ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike, - u32 len) +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; + 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; ikev2_elog_exchange ("ispi %lx rspi %lx EXCHANGE_IKE_AUTH received " - "from %d.%d.%d.%d", clib_host_to_net_u64 (ike->ispi), + "from ", clib_host_to_net_u64 (ike->ispi), clib_host_to_net_u64 (ike->rspi), - sa->is_initiator ? sa->raddr.as_u32 : sa-> - iaddr.as_u32); + 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, len); + 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 */ @@ -1035,64 +1157,57 @@ ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike, /* 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 */ { 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)); + 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)); + 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; } } 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; @@ -1106,12 +1221,12 @@ ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike, else if (payload == IKEV2_PAYLOAD_TSI) /* 44 */ { 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 */ { 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 { @@ -1122,7 +1237,7 @@ ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike, { ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); sa->unsupported_cp = payload; - return; + return 0; } } @@ -1130,50 +1245,62 @@ ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike, p += plen; } -cleanup_and_exit: - vec_free (plaintext); + return 1; + +malformed: + ikev2_set_state (sa, IKEV2_STATE_DELETED); + return 0; } -static void -ikev2_process_informational_req (vlib_main_t * vm, ikev2_sa_t * sa, - ike_header_t * ike, u32 len) +static int +ikev2_process_informational_req (vlib_main_t * vm, + ikev2_sa_t * sa, ike_header_t * ike, u32 len) { int p = 0; u8 payload = ike->nextpayload; u8 *plaintext = 0; ike_payload_header_t *ikep; - u32 plen; + u32 dlen = 0; + ikev2_notify_t *n = 0; sa->liveness_retries = 0; ikev2_elog_exchange ("ispi %lx rspi %lx INFORMATIONAL received " - "from %d.%d.%d.%d", clib_host_to_net_u64 (ike->ispi), - clib_host_to_net_u64 (ike->rspi), sa->iaddr.as_u32); + "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, len); + 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 */ { @@ -1186,21 +1313,19 @@ ikev2_process_informational_req (vlib_main_t * vm, ikev2_sa_t * sa, 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, u32 len) +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; u8 payload = ike->nextpayload; @@ -1209,39 +1334,41 @@ ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa, u8 nonce[IKEV2_NONCE_SIZE]; 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; + u16 plen; ikev2_elog_exchange ("ispi %lx rspi %lx CREATE_CHILD_SA received " - "from %d.%d.%d.%d", clib_host_to_net_u64 (ike->ispi), - clib_host_to_net_u64 (ike->rspi), sa->raddr.as_u32); + "from ", clib_host_to_net_u64 (ike->ispi), + clib_host_to_net_u64 (ike->rspi), + ip_addr_v4 (&sa->raddr).as_u32, + ip_addr_version (&sa->raddr) == AF_IP4); - plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload, len); + 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; @@ -1249,7 +1376,7 @@ ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa, } 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) { @@ -1257,15 +1384,15 @@ ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa, } 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 { @@ -1277,7 +1404,6 @@ ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa, goto cleanup_and_exit; } } - payload = ikep->nextpayload; p += plen; } @@ -1293,7 +1419,7 @@ ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa, 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) @@ -1320,17 +1446,23 @@ ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa, rekey->tsi = tsi; rekey->tsr = tsr; /* update Ni */ - vec_free (sa->i_nonce); + vec_reset_length (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); + vec_validate (sa->r_nonce, IKEV2_NONCE_SIZE - 1); RAND_bytes ((u8 *) sa->r_nonce, IKEV2_NONCE_SIZE); } + else + goto cleanup_and_exit; + 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 * @@ -1381,8 +1513,8 @@ ikev2_ts_cmp (ikev2_ts_t * ts1, ikev2_ts_t * ts2) { 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; @@ -1516,7 +1648,7 @@ ikev2_sa_auth (ikev2_sa_t * sa) psk = ikev2_calc_prf(tr_prf, p->auth.data, key_pad); auth = ikev2_calc_prf(tr_prf, psk, authmsg); - if (!memcmp(auth, sa_auth->data, vec_len(sa_auth->data))) + if (!clib_memcmp(auth, sa_auth->data, vec_len(sa_auth->data))) { ikev2_set_state(sa, IKEV2_STATE_AUTHENTICATED); vec_free(auth); @@ -1564,11 +1696,13 @@ ikev2_sa_auth (ikev2_sa_t * sa) authmsg = ikev2_sa_generate_authmsg (sa, 1); if (sel_p->auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC) { + vec_free (sa->r_auth.data); sa->r_auth.data = ikev2_calc_prf (tr_prf, psk, authmsg); sa->r_auth.method = IKEV2_AUTH_METHOD_SHARED_KEY_MIC; } 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; } @@ -1625,11 +1759,13 @@ ikev2_sa_auth_init (ikev2_sa_t * sa) if (sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC) { + 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; } 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; } @@ -1679,6 +1815,7 @@ ikev2_add_tunnel_from_main (ikev2_add_ipsec_tunnel_args_t * a) ikev2_main_t *km = &ikev2_main; u32 sw_if_index; int rv = 0; + ip46_address_t zero_addr = ip46_address_initializer; if (~0 == a->sw_if_index) { @@ -1704,9 +1841,9 @@ ikev2_add_tunnel_from_main (ikev2_add_ipsec_tunnel_args_t * a) if (rv) { - ikev2_elog_peers (IKEV2_LOG_ERROR, "installing ipip tunnel failed! " - "loc:%d.%d.%d.%d rem:%d.%d.%d.%d", - a->local_ip.ip4.as_u32, a->remote_ip.ip4.as_u32); + ikev2_elog_uint (IKEV2_LOG_ERROR, + "installing ipip tunnel failed! local spi: %x", + a->local_spi); return; } @@ -1727,14 +1864,18 @@ ikev2_add_tunnel_from_main (ikev2_add_ipsec_tunnel_args_t * a) a->local_spi, IPSEC_PROTOCOL_ESP, a->encr_type, &a->loc_ckey, a->integ_type, &a->loc_ikey, - a->flags, 0, a->salt_local, &a->local_ip, - &a->remote_ip, NULL, a->src_port, a->dst_port); + a->flags, 0, a->salt_local, &zero_addr, + &zero_addr, TUNNEL_ENCAP_DECAP_FLAG_NONE, + IP_DSCP_CS0, NULL, a->src_port, a->dst_port); + rv |= ipsec_sa_add_and_lock (a->remote_sa_id, a->remote_spi, IPSEC_PROTOCOL_ESP, a->encr_type, &a->rem_ckey, a->integ_type, &a->rem_ikey, (a->flags | IPSEC_SA_FLAG_IS_INBOUND), 0, - a->salt_remote, &a->remote_ip, - &a->local_ip, NULL, a->ipsec_over_udp_port, + a->salt_remote, &zero_addr, + &zero_addr, TUNNEL_ENCAP_DECAP_FLAG_NONE, + IP_DSCP_CS0, NULL, + a->ipsec_over_udp_port, a->ipsec_over_udp_port); rv |= ipsec_tun_protect_update (sw_if_index, NULL, a->local_sa_id, sas_in); @@ -1742,11 +1883,11 @@ ikev2_add_tunnel_from_main (ikev2_add_ipsec_tunnel_args_t * a) static int ikev2_create_tunnel_interface (vlib_main_t * vm, - u32 thread_index, ikev2_sa_t * sa, ikev2_child_sa_t * child, u32 sa_index, u32 child_index, 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; @@ -1766,16 +1907,16 @@ ikev2_create_tunnel_interface (vlib_main_t * vm, if (sa->is_initiator) { - ip46_address_set_ip4 (&a.local_ip, &sa->iaddr); - ip46_address_set_ip4 (&a.remote_ip, &sa->raddr); + ip_address_to_46 (&sa->iaddr, &a.local_ip); + ip_address_to_46 (&sa->raddr, &a.remote_ip); 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 (&a.local_ip, &sa->raddr); - ip46_address_set_ip4 (&a.remote_ip, &sa->iaddr); + ip_address_to_46 (&sa->raddr, &a.local_ip); + ip_address_to_46 (&sa->iaddr, &a.remote_ip); proposals = child->i_proposals; a.local_spi = child->i_proposals[0].spi; a.remote_spi = child->r_proposals[0].spi; @@ -1787,7 +1928,7 @@ ikev2_create_tunnel_interface (vlib_main_t * vm, a.flags |= IPSEC_SA_FLAG_IS_TUNNEL; a.flags |= IPSEC_SA_FLAG_UDP_ENCAP; } - if (sa->natt) + if (ikev2_natt_active (sa)) a.flags |= IPSEC_SA_FLAG_UDP_ENCAP; a.is_rekey = is_rekey; @@ -1913,7 +2054,8 @@ ikev2_create_tunnel_interface (vlib_main_t * vm, a.salt_remote = child->salt_ei; a.salt_local = child->salt_er; } - a.dst_port = sa->natt ? sa->dst_port : sa->ipsec_over_udp_port; + a.dst_port = + ikev2_natt_active (sa) ? sa->dst_port : sa->ipsec_over_udp_port; a.src_port = sa->ipsec_over_udp_port; } @@ -2055,13 +2197,13 @@ ikev2_delete_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa, if (sa->is_initiator) { - ip46_address_set_ip4 (&a.local_ip, &sa->iaddr); - ip46_address_set_ip4 (&a.remote_ip, &sa->raddr); + ip_address_to_46 (&sa->iaddr, &a.local_ip); + ip_address_to_46 (&sa->raddr, &a.remote_ip); } else { - ip46_address_set_ip4 (&a.local_ip, &sa->raddr); - ip46_address_set_ip4 (&a.remote_ip, &sa->iaddr); + 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; @@ -2074,9 +2216,11 @@ ikev2_delete_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa, } static u32 -ikev2_generate_message (ikev2_sa_t * sa, ike_header_t * ike, void *user, - udp_header_t * udp) +ikev2_generate_message (vlib_buffer_t * b, ikev2_sa_t * sa, + ike_header_t * ike, void *user, udp_header_t * udp) { + 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; @@ -2139,8 +2283,7 @@ ikev2_generate_message (ikev2_sa_t * sa, ike_header_t * ike, void *user, u8 *nat_detection_sha1 = ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa->ispi), clib_host_to_net_u64 (sa->rspi), - clib_host_to_net_u32 (sa->raddr.as_u32), - udp->dst_port); + &sa->raddr, udp->dst_port); ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP, nat_detection_sha1); @@ -2148,7 +2291,7 @@ ikev2_generate_message (ikev2_sa_t * sa, ike_header_t * ike, void *user, nat_detection_sha1 = ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa->ispi), clib_host_to_net_u64 (sa->rspi), - sa->iaddr.as_u32, udp->src_port); + &sa->iaddr, udp->src_port); ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP, nat_detection_sha1); @@ -2223,7 +2366,7 @@ ikev2_generate_message (ikev2_sa_t * sa, ike_header_t * ike, void *user, { 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 @@ -2317,22 +2460,27 @@ ikev2_generate_message (ikev2_sa_t * sa, ike_header_t * ike, void *user, ike->version = IKE_VERSION_2; ike->nextpayload = IKEV2_PAYLOAD_SK; tlen = sizeof (*ike); + if (sa->is_initiator) + ike->flags |= IKEV2_HDR_FLAG_INITIATOR; + + if (ike_hdr_is_request (ike)) { - 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 (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 */ @@ -2361,21 +2509,36 @@ ikev2_generate_message (ikev2_sa_t * sa, ike_header_t * ike, void *user, 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); if (is_aead) { - ikev2_encrypt_aead_data (ptd, sa, tr_encr, chain->data, - ph->payload, (u8 *) ike, - sizeof (*ike) + sizeof (*ph), - ph->payload + plen - sizeof (*ph) - - IKEV2_GCM_ICV_SIZE); + 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 { - ikev2_encrypt_data (ptd, sa, tr_encr, chain->data, ph->payload); + 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, @@ -2396,70 +2559,87 @@ done: } static u32 -ikev2_retransmit_sa_init (ike_header_t * ike, - ip4_address_t iaddr, ip4_address_t raddr, u32 rlen) +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; - 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 < 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); - 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 ~0; - if (plen < sizeof(ike_payload_header_t)) - return -1; + 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) + { + 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; + } - 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 = (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, - raddr.as_u32, 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, - raddr.as_u32, 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* */ @@ -2468,8 +2648,11 @@ ikev2_retransmit_sa_init (ike_header_t * ike, } static u32 -ikev2_retransmit_resp (ikev2_sa_t * sa, ike_header_t * ike, u32 rlen) +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 */ @@ -2494,13 +2677,15 @@ ikev2_retransmit_resp (ikev2_sa_t * sa, ike_header_t * ike, u32 rlen) ike->length = tmp->length; clib_memcpy_fast (ike->payload, tmp->payload, slen - sizeof (*ike)); ikev2_elog_uint_peers (IKEV2_LOG_DEBUG, "IKE retransmit msgid %d", - msg_id, sa->raddr.as_u32, sa->iaddr.as_u32); + 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, sa->raddr.as_u32, sa->iaddr.as_u32); + msg_id, ip_addr_v4 (&sa->raddr).as_u32, + ip_addr_v4 (&sa->iaddr).as_u32); return ~0; } @@ -2533,198 +2718,216 @@ ikev2_del_sa_init (u64 ispi) sizeof (ispi)); } -static uword -ikev2_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) +static_always_inline void +ikev2_rewrite_v6_addrs (ikev2_sa_t * sa, ip6_header_t * ih) { - u32 n_left_from, *from, *to_next; - ikev2_next_t next_index; - ikev2_main_t *km = &ikev2_main; - u32 thread_index = vlib_get_thread_index (); + 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); + } +} - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; +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_always_inline void +ikev2_set_ip_address (ikev2_sa_t * sa, const void *iaddr, + const void *raddr, const int af) +{ + ip_address_set (&sa->raddr, raddr, af); + ip_address_set (&sa->iaddr, iaddr, af); +} - while (n_left_from > 0) +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 { - u32 n_left_to_next; + 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); +} - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); +static_always_inline uword +ikev2_node_internal (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame, + u8 is_ip4) +{ + u32 n_left = frame->n_vectors, *from; + ikev2_main_t *km = &ikev2_main; + 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 (); + int res; - while (n_left_from > 0 && n_left_to_next > 0) + from = vlib_frame_vector_args (frame); + 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, has_non_esp_marker = 0; + + if (b0->punt_reason == ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_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 */ - u32 rlen, slen = 0; - int is_req = 0, has_non_esp_marker = 0; - - /* 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); - - if (b0->punt_reason == ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0]) - { - u8 *ptr = vlib_buffer_get_current (b0); - ip40 = (ip4_header_t *) ptr; - ptr += sizeof (*ip40); - udp0 = (udp_header_t *) ptr; - ptr += sizeof (*udp0); - ike0 = (ike_header_t *) ptr; - } + 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); + + if (is_ip4) + { + ip40 = (ip4_header_t *) ipx_hdr; + ip_hdr_sz = sizeof (*ip40); + } else { - ike0 = vlib_buffer_get_current (b0); - vlib_buffer_advance (b0, -sizeof (*udp0)); - udp0 = vlib_buffer_get_current (b0); - vlib_buffer_advance (b0, -sizeof (*ip40)); - ip40 = vlib_buffer_get_current (b0); + ip60 = (ip6_header_t *) ipx_hdr; + ip_hdr_sz = sizeof (*ip60); } + vlib_buffer_advance (b0, -ip_hdr_sz); + } - rlen = b0->current_length - sizeof (*ip40) - sizeof (*udp0); + rlen = b0->current_length - ip_hdr_sz - sizeof (*udp0); - /* check for non-esp marker */ - if (*((u32 *) ike0) == 0) - { - ike0 = - (ike_header_t *) ((u8 *) ike0 + - sizeof (ikev2_non_esp_marker)); - rlen -= sizeof (ikev2_non_esp_marker); - has_non_esp_marker = 1; - } + /* check for non-esp marker */ + if (*((u32 *) ike0) == 0) + { + ike0 = + (ike_header_t *) ((u8 *) ike0 + sizeof (ikev2_non_esp_marker)); + rlen -= sizeof (ikev2_non_esp_marker); + has_non_esp_marker = 1; + } - if (clib_net_to_host_u32 (ike0->length) != rlen) - { - vlib_node_increment_counter (vm, ikev2_node.index, - IKEV2_ERROR_BAD_LENGTH, 1); - goto dispatch0; - } + 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 (ike0->version != IKE_VERSION_2) - { - vlib_node_increment_counter (vm, ikev2_node.index, - IKEV2_ERROR_NOT_IKEV2, 1); - goto dispatch0; - } + if (ike0->version != IKE_VERSION_2) + { + vlib_node_increment_counter (vm, node->node_index, + IKEV2_ERROR_NOT_IKEV2, 1); + goto dispatch0; + } - if (ike0->exchange == IKEV2_EXCHANGE_SA_INIT) - { - sa0 = &sa; - clib_memset (sa0, 0, sizeof (*sa0)); + if (ike0->exchange == IKEV2_EXCHANGE_SA_INIT) + { + sa0 = &sa; + clib_memset (sa0, 0, sizeof (*sa0)); - if (ike0->flags & IKEV2_HDR_FLAG_INITIATOR) + if (ike_hdr_is_initiator (ike0)) + { + if (ike0->rspi == 0) { - if (ike0->rspi == 0) - { - sa0->raddr.as_u32 = ip40->dst_address.as_u32; - sa0->iaddr.as_u32 = ip40->src_address.as_u32; - sa0->dst_port = clib_net_to_host_u16 (udp0->src_port); - - slen = - ikev2_retransmit_sa_init (ike0, sa0->iaddr, - sa0->raddr, rlen); - if (slen) - { - vlib_node_increment_counter (vm, ikev2_node.index, - ~0 == - slen ? - IKEV2_ERROR_IKE_SA_INIT_IGNORE - : - IKEV2_ERROR_IKE_SA_INIT_RETRANSMIT, - 1); - goto dispatch0; - } + 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); - ikev2_process_sa_init_req (vm, sa0, ike0, udp0, rlen); + sa0->dst_port = clib_net_to_host_u16 (udp0->src_port); - 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); - } + 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; + } - if (sa0->state == IKEV2_STATE_SA_INIT - || sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE) - { - slen = ikev2_generate_message (sa0, ike0, 0, udp0); - } + res = ikev2_process_sa_init_req (vm, sa0, ike0, udp0, rlen); + if (!res) + vlib_node_increment_counter (vm, node->node_index, + IKEV2_ERROR_MALFORMED_PACKET, + 1); - 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)); - ikev2_init_sa (vm, 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); - } + 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); } - } - else //received sa_init without initiator flag - { - sa0->raddr.as_u32 = ip40->src_address.as_u32; - sa0->iaddr.as_u32 = ip40->dst_address.as_u32; - ikev2_process_sa_init_resp (vm, sa0, ike0, udp0, rlen); - if (sa0->state == IKEV2_STATE_SA_INIT) + if (sa0->state == IKEV2_STATE_SA_INIT + || sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE) { - is_req = 1; - ike0->exchange = IKEV2_EXCHANGE_IKE_AUTH; - uword *p = hash_get (km->sa_by_ispi, ike0->ispi); - if (p) - { - ikev2_sa_t *sai = - pool_elt_at_index (km->sais, p[0]); - - if (clib_atomic_bool_cmp_and_swap - (&sai->init_response_received, 0, 1)) - { - ikev2_complete_sa_data (sa0, sai); - ikev2_calc_keys (sa0); - ikev2_sa_auth_init (sa0); - slen = - ikev2_generate_message (sa0, ike0, 0, udp0); - } - else - { - /* we've already processed sa-init response */ - sa0->state = IKEV2_STATE_UNKNOWN; - } - } + ike0->flags = IKEV2_HDR_FLAG_RESPONSE; + slen = ikev2_generate_message (b0, sa0, ike0, 0, udp0); + 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 { @@ -2732,262 +2935,349 @@ ikev2_node_fn (vlib_main_t * vm, } } } - 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); - slen = ikev2_retransmit_resp (sa0, ike0, rlen); - if (slen) - { - vlib_node_increment_counter (vm, ikev2_node.index, - ~0 == - slen ? - IKEV2_ERROR_IKE_REQ_IGNORE - : - IKEV2_ERROR_IKE_REQ_RETRANSMIT, - 1); - goto dispatch0; - } + ikev2_process_sa_init_resp (vm, sa0, ike0, udp0, rlen); - sa0->dst_port = clib_net_to_host_u16 (udp0->src_port); - ikev2_process_auth_req (vm, sa0, ike0, rlen); - 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 (vm, thread_index, sa0, - &sa0->childs[0], - p[0], 0, 0); - } + ikev2_sa_t *sai = pool_elt_at_index (km->sais, p[0]); - if (sa0->is_initiator) - { - ikev2_del_sa_init (ike0->ispi); - } - else - { - slen = ikev2_generate_message (sa0, ike0, 0, udp0); + if (clib_atomic_bool_cmp_and_swap + (&sai->init_response_received, 0, 1)) + { + ikev2_complete_sa_data (sa0, sai); + ikev2_calc_keys (sa0); + ikev2_sa_auth_init (sa0); + ike0->flags = IKEV2_HDR_FLAG_INITIATOR; + slen = + ikev2_generate_message (b0, sa0, ike0, 0, udp0); + 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; + } } } + + 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; + } - slen = ikev2_retransmit_resp (sa0, ike0, rlen); - if (slen) - { - vlib_node_increment_counter (vm, ikev2_node.index, - ~0 == - slen ? - IKEV2_ERROR_IKE_REQ_IGNORE - : - IKEV2_ERROR_IKE_REQ_RETRANSMIT, - 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) + { + ikev2_del_sa_init (sa0->ispi); + } + else + { + slen = ikev2_generate_message (b0, sa0, ike0, 0, udp0); + 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, rlen); - 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 (!(ike0->flags & IKEV2_HDR_FLAG_RESPONSE)) - { - ike0->flags |= IKEV2_HDR_FLAG_RESPONSE; - slen = ikev2_generate_message (sa0, ike0, 0, udp0); - } + } + if (ike_hdr_is_request (ike0)) + { + ike0->flags = IKEV2_HDR_FLAG_RESPONSE; + slen = ikev2_generate_message (b0, sa0, ike0, 0, udp0); + 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) { - 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; + } - slen = ikev2_retransmit_resp (sa0, ike0, rlen); - if (slen) + res = ikev2_process_create_child_sa_req (vm, sa0, ike0, rlen); + if (!res) + { + vlib_node_increment_counter (vm, node->node_index, + IKEV2_ERROR_MALFORMED_PACKET, + 1); + slen = ~0; + goto dispatch0; + } + + if (sa0->rekey) + { + if (sa0->rekey[0].protocol_id != IKEV2_PROTOCOL_IKE) { - vlib_node_increment_counter (vm, ikev2_node.index, - ~0 == - slen ? - IKEV2_ERROR_IKE_REQ_IGNORE - : - IKEV2_ERROR_IKE_REQ_RETRANSMIT, - 1); - 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); } - - ikev2_process_create_child_sa_req (vm, sa0, ike0, rlen); - if (sa0->rekey) + if (ike_hdr_is_response (ike0)) { - if (sa0->rekey[0].protocol_id != IKEV2_PROTOCOL_IKE) - { - if (sa0->childs) - ikev2_sa_free_all_child_sa (&sa0->childs); - ikev2_child_sa_t *child; - vec_add2 (sa0->childs, child, 1); - clib_memset (child, 0, sizeof (*child)); - child->r_proposals = sa0->rekey[0].r_proposal; - child->i_proposals = sa0->rekey[0].i_proposal; - child->tsi = sa0->rekey[0].tsi; - child->tsr = sa0->rekey[0].tsr; - ikev2_create_tunnel_interface (vm, thread_index, - sa0, child, p[0], - child - sa0->childs, - 1); - } - if (sa0->is_initiator) - { - vec_free (sa0->rekey); - } - else - { - slen = ikev2_generate_message (sa0, ike0, 0, udp0); - } + vec_free (sa0->rekey); + } + else + { + ike0->flags = IKEV2_HDR_FLAG_RESPONSE; + slen = ikev2_generate_message (b0, sa0, ike0, 0, udp0); + 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 { - ikev2_elog_uint_peers (IKEV2_LOG_WARNING, "IKEv2 exchange %d " - "received from %d.%d.%d.%d to %d.%d.%d.%d", - ike0->exchange, - ip40->src_address.as_u32, - ip40->dst_address.as_u32); + next[0] = IKEV2_NEXT_IP6_LOOKUP; + ikev2_rewrite_v6_addrs (sa0, ip60); } - dispatch0: - /* if we are sending packet back, rewrite headers */ - if (slen && ~0 != slen) + 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 - { - ip40->dst_address.as_u32 = sa0->iaddr.as_u32; - ip40->src_address.as_u32 = sa0->raddr.as_u32; - } + udp0->dst_port = udp0->src_port = + clib_net_to_host_u16 (ikev2_get_port (sa0)); - if (is_req) + if (udp0->dst_port == clib_net_to_host_u16 (IKEV2_PORT_NATT) + && ikev2_natt_active (sa0)) { - udp0->dst_port = udp0->src_port = - clib_net_to_host_u16 (ikev2_get_port (sa0)); - - if (udp0->dst_port == clib_net_to_host_u16 (IKEV2_PORT_NATT) - && sa0->natt) - { - if (!has_non_esp_marker) - slen = ikev2_insert_non_esp_marker (ike0, slen); - } + if (!has_non_esp_marker) + slen = ikev2_insert_non_esp_marker (ike0, slen); } - else - { - if (has_non_esp_marker) - slen += sizeof (ikev2_non_esp_marker); + } + else + { + if (has_non_esp_marker) + slen += sizeof (ikev2_non_esp_marker); - u16 tp = udp0->dst_port; - udp0->dst_port = udp0->src_port; - udp0->src_port = tp; - } + u16 tp = udp0->dst_port; + udp0->dst_port = udp0->src_port; + udp0->src_port = tp; + } - udp0->length = - clib_host_to_net_u16 (slen + sizeof (udp_header_t)); - udp0->checksum = 0; - b0->current_length = - slen + sizeof (ip4_header_t) + sizeof (udp_header_t); + 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) + { 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; - - vec_foreach (c, sa0->childs) - ikev2_delete_tunnel_interface (km->vnet_main, sa0, c); - - ikev2_delete_sa (sa0); + ip60->payload_length = + clib_host_to_net_u16 (b0->current_length - sizeof (*ip60)); } - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + } + /* delete sa */ + if (sa0 && (sa0->state == IKEV2_STATE_DELETED || + sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE)) + { + ikev2_child_sa_t *c; - 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 = sw_if_index0; - t->next_index = next0; - } + vec_foreach (c, sa0->childs) + ikev2_delete_tunnel_interface (km->vnet_main, sa0, c); - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, - n_left_to_next, bi0, next0); + ikev2_delete_sa (ptd, sa0); } + if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) + && (b0->flags & VLIB_BUFFER_IS_TRACED))) + { - vlib_put_next_frame (vm, node, next_index, n_left_to_next); + 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; } - vlib_node_increment_counter (vm, ikev2_node.index, + 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 */ ); +} + +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 */ ); +} + /* *INDENT-OFF* */ -VLIB_REGISTER_NODE (ikev2_node,static) = { - .function = ikev2_node_fn, - .name = "ikev2", +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, @@ -2995,11 +3285,27 @@ VLIB_REGISTER_NODE (ikev2_node,static) = { .n_errors = ARRAY_LEN(ikev2_error_strings), .error_strings = ikev2_error_strings, - .n_next_nodes = IKEV2_N_NEXT, - + .n_next_nodes = IKEV2_IP4_N_NEXT, .next_nodes = { [IKEV2_NEXT_IP4_LOOKUP] = "ip4-lookup", - [IKEV2_NEXT_ERROR_DROP] = "error-drop", + [IKEV2_NEXT_IP4_ERROR_DROP] = "error-drop", + }, +}; + +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_IP6_N_NEXT, + .next_nodes = { + [IKEV2_NEXT_IP6_LOOKUP] = "ip6-lookup", + [IKEV2_NEXT_IP6_ERROR_DROP] = "error-drop", }, }; /* *INDENT-ON* */ @@ -3147,10 +3453,11 @@ ikev2_profile_index_by_name (u8 * name) static void -ikev2_send_ike (vlib_main_t * vm, ip4_address_t * src, ip4_address_t * dst, +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; @@ -3159,49 +3466,72 @@ ikev2_send_ike (vlib_main_t * vm, ip4_address_t * src, ip4_address_t * dst, 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 (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; } @@ -3274,49 +3604,62 @@ ikev2_unregister_udp_port (ikev2_profile_t * p) static void ikev2_initiate_delete_ike_sa_internal (vlib_main_t * vm, ikev2_main_per_thread_data_t * tkm, - ikev2_sa_t * sa) + ikev2_sa_t * sa, u8 send_notification) { ikev2_main_t *km = &ikev2_main; - ip4_address_t *src, *dst; + 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; - bi0 = ikev2_get_new_ike_header_buff (vm, &ike0); - if (!bi0) - { - ikev2_log_error ("buffer alloc failure"); - return; - } - - ike0->exchange = IKEV2_EXCHANGE_INFORMATIONAL; - ike0->ispi = clib_host_to_net_u64 (sa->ispi); - ike0->rspi = clib_host_to_net_u64 (sa->rspi); vec_resize (sa->del, 1); sa->del->protocol_id = IKEV2_PROTOCOL_IKE; sa->del->spi = sa->ispi; - ike0->msgid = clib_host_to_net_u32 (sa->last_init_msg_id + 1); - sa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid); - len = ikev2_generate_message (sa, ike0, 0, 0); - if (sa->is_initiator) + if (send_notification) { - src = &sa->iaddr; - dst = &sa->raddr; - } - else - { - dst = &sa->iaddr; - src = &sa->raddr; - } + 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 + 1); + sa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid); + len = ikev2_generate_message (b0, sa, ike0, 0, 0); + if (~0 == len) + return; - ikev2_send_ike (vm, src, dst, bi0, len, - ikev2_get_port (sa), sa->dst_port, 0); + 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 */ - ikev2_child_sa_t *c; vec_foreach (c, sa->childs) ikev2_delete_tunnel_interface (km->vnet_main, sa, c); @@ -3339,6 +3682,22 @@ ikev2_cleanup_profile_sessions (ikev2_main_t * km, ikev2_profile_t * p) 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* */ @@ -3351,7 +3710,7 @@ ikev2_cleanup_profile_sessions (ikev2_main_t * km, ikev2_profile_t * p) 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); + ikev2_initiate_delete_ike_sa_internal (km->vlib_main, tkm, sa, 1); } vec_reset_length (del_sai); @@ -3443,6 +3802,15 @@ ikev2_set_profile_auth (vlib_main_t * vm, u8 * name, u8 auth_method, 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) @@ -3450,8 +3818,7 @@ ikev2_set_profile_id (vlib_main_t * vm, u8 * name, u8 id_type, u8 * data, 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); @@ -3482,10 +3849,27 @@ ikev2_set_profile_id (vlib_main_t * vm, u8 * name, u8 id_type, u8 * data, 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; @@ -3498,23 +3882,24 @@ ikev2_set_profile_ts (vlib_main_t * vm, u8 * name, u8 protocol_id, 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; @@ -3523,7 +3908,7 @@ ikev2_set_profile_ts (vlib_main_t * vm, u8 * name, u8 protocol_id, 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; @@ -3537,7 +3922,7 @@ ikev2_set_profile_responder (vlib_main_t * vm, u8 * name, } p->responder.sw_if_index = sw_if_index; - p->responder.ip4 = ip4; + ip_address_copy (&p->responder.addr, &addr); return 0; } @@ -3682,13 +4067,45 @@ ikev2_set_profile_sa_lifetime (vlib_main_t * vm, u8 * name, 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; +} + 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 if_ip = ip_address_initializer; p = ikev2_profile_index_by_name (name); @@ -3698,150 +4115,154 @@ ikev2_initiate_sa_init (vlib_main_t * vm, u8 * name) return r; } - if (p->responder.sw_if_index == ~0 || p->responder.ip4.data_u32 == 0) + if (p->responder.sw_if_index == ~0 + || ip_address_is_zero (&p->responder.addr)) { r = clib_error_return (0, "responder not set for profile %v", name); return r; } + if (ikev2_get_if_address (p->responder.sw_if_index, + ip_addr_version (&p->responder.addr), &if_ip)) + { + valid_ip = 1; + } - /* 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); - if (!bi0) - { - char *errmsg = "buffer alloc failure"; - ikev2_log_error (errmsg); - return clib_error_return (0, errmsg); - } + bi0 = ikev2_get_new_ike_header_buff (vm, &b0); + if (!bi0) + { + char *errmsg = "buffer alloc failure"; + ikev2_log_error (errmsg); + return clib_error_return (0, errmsg); + } + ike0 = vlib_buffer_get_current (b0); - /* 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; - sa.ipsec_over_udp_port = p->ipsec_over_udp_port; - sa.is_tun_itf_set = 1; - sa.initial_contact = 1; - sa.dst_port = IKEV2_PORT; - ikev2_generate_sa_init_data (&sa); - ikev2_payload_add_ke (chain, sa.dh_group, sa.i_dh_data); - ikev2_payload_add_nonce (chain, sa.i_nonce); - - /* 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), - clib_host_to_net_u32 (if_ip->as_u32), - clib_host_to_net_u16 (IKEV2_PORT)); - - ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NAT_DETECTION_SOURCE_IP, - nat_detection_sha1); - vec_free (nat_detection_sha1); - nat_detection_sha1 = - ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa.ispi), - clib_host_to_net_u64 (sa.rspi), - clib_host_to_net_u32 (p->responder.ip4.as_u32), - clib_host_to_net_u16 (sa.dst_port)); - ikev2_payload_add_notify (chain, - IKEV2_NOTIFY_MSG_NAT_DETECTION_DESTINATION_IP, - nat_detection_sha1); - 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_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 */ - 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.r_id.type = p->rem_id.type; - sa.r_id.data = vec_dup (p->rem_id.data); - sa.i_auth.method = p->auth.method; - sa.i_auth.hex = p->auth.hex; - sa.i_auth.data = vec_dup (p->auth.data); - sa.sw_if_index = p->responder.sw_if_index; - vec_add (sa.childs[0].tsi, &p->loc_ts, 1); - vec_add (sa.childs[0].tsr, &p->rem_ts, 1); - - ikev2_initial_contact_cleanup (&sa); - - /* add SA to the pool */ - ikev2_sa_t *sa0 = 0; - pool_get (km->sais, sa0); - clib_memcpy_fast (sa0, &sa, sizeof (*sa0)); - hash_set (km->sa_by_ispi, sa0->ispi, sa0 - km->sais); - - ikev2_send_ike (vm, if_ip, &p->responder.ip4, bi0, len, - IKEV2_PORT, sa.dst_port, sa.sw_if_index); - - ikev2_elog_exchange ("ispi %lx rspi %lx IKEV2_EXCHANGE_SA_INIT sent to " - "%d.%d.%d.%d", clib_host_to_net_u64 (sa0->ispi), 0, - p->responder.ip4.as_u32); - } + /* 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_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_sha1 = + ikev2_compute_nat_sha1 (clib_host_to_net_u64 (sa.ispi), + clib_host_to_net_u64 (sa.rspi), + &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); + + /* 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 = clib_host_to_net_u64 (sa.ispi); + ike0->rspi = 0; + ike0->msgid = 0; + + /* 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, &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, &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); + } + else + { + r = + clib_error_return (0, "interface %U does not have any IP address!", + format_vnet_sw_if_index_name, vnet_get_main (), + p->responder.sw_if_index); + return r; + } return 0; } @@ -3854,25 +4275,31 @@ ikev2_delete_child_sa_internal (vlib_main_t * vm, ikev2_sa_t * sa, 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, 0); - if (sa->natt) + len = ikev2_generate_message (b0, sa, ike0, 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), sa->dst_port, sa->sw_if_index); @@ -3955,7 +4382,7 @@ ikev2_initiate_delete_ike_sa (vlib_main_t * vm, u64 ispi) return r; } - ikev2_initiate_delete_ike_sa_internal (vm, ftkm, fsa); + ikev2_initiate_delete_ike_sa_internal (vm, ftkm, fsa, 1); return 0; } @@ -3965,16 +4392,18 @@ ikev2_rekey_child_sa_internal (vlib_main_t * vm, ikev2_sa_t * sa, { /* 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, &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->version = IKE_VERSION_2; ike0->flags = IKEV2_HDR_FLAG_INITIATOR; ike0->exchange = IKEV2_EXCHANGE_CREATE_CHILD_SA; @@ -3991,8 +4420,11 @@ ikev2_rekey_child_sa_internal (vlib_main_t * vm, ikev2_sa_t * sa, 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, 0); - if (sa->natt) + len = ikev2_generate_message (b0, sa, ike0, proposals, 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); @@ -4039,6 +4471,74 @@ ikev2_initiate_rekey_child_sa (vlib_main_t * vm, u32 ispi) 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) { @@ -4080,12 +4580,14 @@ ikev2_init (vlib_main_t * vm) km->sw_if_indices = hash_create (0, 0); km->udp_ports = hash_create (0, sizeof (uword)); - udp_register_dst_port (vm, IKEV2_PORT, ikev2_node.index, 1); - udp_register_dst_port (vm, IKEV2_PORT_NATT, 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"); + vlib_punt_hdl_t punt_hdl = vlib_punt_client_register ("ikev2-ip4"); vlib_punt_register (punt_hdl, ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0], - "ikev2"); + "ikev2-ip4"); ikev2_cli_reference (); km->log_level = IKEV2_LOG_ERROR; @@ -4156,13 +4658,17 @@ ikev2_mngr_process_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * csa, ip46_address_t remote_ip; if (sa->is_initiator) { - ip46_address_set_ip4 (&local_ip, &sa->iaddr); - ip46_address_set_ip4 (&remote_ip, &sa->raddr); + 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 { - ip46_address_set_ip4 (&local_ip, &sa->raddr); - ip46_address_set_ip4 (&remote_ip, &sa->iaddr); + 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* */ @@ -4221,6 +4727,17 @@ ikev2_set_liveness_params (u32 period, u32 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) { @@ -4265,6 +4782,51 @@ ikev2_mngr_process_ipsec_sa (ipsec_sa_t * ipsec_sa) } } +static void +ikev2_process_pending_sa_init_one (ikev2_main_t * km, ikev2_sa_t * sa) +{ + ikev2_profile_t *p; + u32 bi0; + u8 *nat_sha, *np; + + if (ip_address_is_zero (&sa->iaddr)) + { + p = pool_elt_at_index (km->profiles, sa->profile_index); + 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 (ikev2_main_t * km) { @@ -4279,47 +4841,41 @@ ikev2_process_pending_sa_init (ikev2_main_t * km) if (sa->init_response_received) continue; - u32 bi0; - if (vlib_buffer_alloc (km->vlib_main, &bi0, 1) != 1) - return; - - vlib_buffer_t * b = vlib_get_buffer (km->vlib_main, bi0); - clib_memcpy_fast (vlib_buffer_get_current (b), - sa->last_sa_init_req_packet_data, - vec_len (sa->last_sa_init_req_packet_data)); - ikev2_send_ike (km->vlib_main, &sa->iaddr, &sa->raddr, bi0, - vec_len (sa->last_sa_init_req_packet_data), - ikev2_get_port (sa), IKEV2_PORT, sa->sw_if_index); + ikev2_process_pending_sa_init_one (km, sa); })); /* *INDENT-ON* */ } -static vlib_node_registration_t ikev2_mngr_process_node; - static void ikev2_send_informational_request (ikev2_sa_t * sa) { ikev2_main_t *km = &ikev2_main; - ip4_address_t *src, *dst; + 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, &ike0); + 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 + 1); + ike0->flags = 0; sa->last_init_msg_id = clib_net_to_host_u32 (ike0->msgid); - len = ikev2_generate_message (sa, ike0, 0, 0); - if (sa->natt) + len = ikev2_generate_message (b0, sa, ike0, 0, 0); + if (~0 == len) + return; + + if (ikev2_natt_active (sa)) len = ikev2_insert_non_esp_marker (ike0, len); if (sa->is_initiator) @@ -4338,6 +4894,13 @@ ikev2_send_informational_request (ikev2_sa_t * sa) 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) { @@ -4373,8 +4936,7 @@ ikev2_mngr_process_fn (vlib_main_t * vm, vlib_node_runtime_t * rt, 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 */ @@ -4388,6 +4950,10 @@ ikev2_mngr_process_fn (vlib_main_t * vm, vlib_node_runtime_t * rt, pool_foreach (sa, tkm->sas, ({ ikev2_child_sa_t *c; u8 del_old_ids = 0; + + if (sa->state != IKEV2_STATE_AUTHENTICATED) + continue; + if (sa->old_remote_id_present && 0 > sa->old_id_expiration) { sa->old_remote_id_present = 0; @@ -4397,11 +4963,9 @@ ikev2_mngr_process_fn (vlib_main_t * vm, vlib_node_runtime_t * rt, sa->old_id_expiration -= 1; vec_foreach (c, sa->childs) - { - req_sent |= ikev2_mngr_process_child_sa(sa, c, del_old_ids); - } + ikev2_mngr_process_child_sa(sa, c, del_old_ids); - if (ikev2_mngr_process_responder_sas (sa)) + if (!km->dpd_disabled && ikev2_mngr_process_responder_sas (sa)) vec_add1 (to_be_deleted, sa - tkm->sas); })); /* *INDENT-ON* */ @@ -4440,14 +5004,6 @@ ikev2_mngr_process_fn (vlib_main_t * vm, vlib_node_runtime_t * rt, /* *INDENT-ON* */ ikev2_process_pending_sa_init (km); - - if (req_sent) - { - vlib_process_wait_for_event_or_clock (vm, 5); - vlib_process_get_events (vm, NULL); - req_sent = 0; - } - } return 0; }