/* *------------------------------------------------------------------ * ipsec_api.c - ipsec api * * Copyright (c) 2016 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *------------------------------------------------------------------ */ #include <vnet/vnet.h> #include <vlibmemory/api.h> #include <vnet/interface.h> #include <vnet/api_errno.h> #include <vnet/ip/ip.h> #include <vnet/ip/ip_types_api.h> #include <vnet/ipsec/ipsec_types_api.h> #include <vnet/fib/fib.h> #include <vnet/ipip/ipip.h> #include <vnet/vnet_msg_enum.h> #if WITH_LIBSSL > 0 #include <vnet/ipsec/ipsec.h> #include <vnet/ipsec/ipsec_tun.h> #endif /* IPSEC */ #define vl_typedefs /* define message structures */ #include <vnet/vnet_all_api_h.h> #undef vl_typedefs #define vl_endianfun /* define message structures */ #include <vnet/vnet_all_api_h.h> #undef vl_endianfun /* instantiate all the print functions we know about */ #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) #define vl_printfun #include <vnet/vnet_all_api_h.h> #undef vl_printfun #include <vlibapi/api_helper_macros.h> #define foreach_vpe_api_msg \ _(IPSEC_SPD_ADD_DEL, ipsec_spd_add_del) \ _(IPSEC_INTERFACE_ADD_DEL_SPD, ipsec_interface_add_del_spd) \ _(IPSEC_SPD_ENTRY_ADD_DEL, ipsec_spd_entry_add_del) \ _(IPSEC_SAD_ENTRY_ADD_DEL, ipsec_sad_entry_add_del) \ _(IPSEC_SA_DUMP, ipsec_sa_dump) \ _(IPSEC_SPDS_DUMP, ipsec_spds_dump) \ _(IPSEC_SPD_DUMP, ipsec_spd_dump) \ _(IPSEC_SPD_INTERFACE_DUMP, ipsec_spd_interface_dump) \ _(IPSEC_TUNNEL_IF_ADD_DEL, ipsec_tunnel_if_add_del) \ _(IPSEC_TUNNEL_IF_SET_SA, ipsec_tunnel_if_set_sa) \ _(IPSEC_SELECT_BACKEND, ipsec_select_backend) \ _(IPSEC_BACKEND_DUMP, ipsec_backend_dump) \ _(IPSEC_TUNNEL_PROTECT_UPDATE, ipsec_tunnel_protect_update) \ _(IPSEC_TUNNEL_PROTECT_DEL, ipsec_tunnel_protect_del) \ _(IPSEC_TUNNEL_PROTECT_DUMP, ipsec_tunnel_protect_dump) static void vl_api_ipsec_spd_add_del_t_handler (vl_api_ipsec_spd_add_del_t * mp) { #if WITH_LIBSSL == 0 clib_warning ("unimplemented"); #else vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); vl_api_ipsec_spd_add_del_reply_t *rmp; int rv; rv = ipsec_add_del_spd (vm, ntohl (mp->spd_id), mp->is_add); REPLY_MACRO (VL_API_IPSEC_SPD_ADD_DEL_REPLY); #endif } static void vl_api_ipsec_interface_add_del_spd_t_handler (vl_api_ipsec_interface_add_del_spd_t * mp) { vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); vl_api_ipsec_interface_add_del_spd_reply_t *rmp; int rv; u32 sw_if_index __attribute__ ((unused)); u32 spd_id __attribute__ ((unused)); sw_if_index = ntohl (mp->sw_if_index); spd_id = ntohl (mp->spd_id); VALIDATE_SW_IF_INDEX (mp); #if WITH_LIBSSL > 0 rv = ipsec_set_interface_spd (vm, sw_if_index, spd_id, mp->is_add); #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_IPSEC_INTERFACE_ADD_DEL_SPD_REPLY); } static void vl_api_ipsec_tunnel_protect_update_t_handler (vl_api_ipsec_tunnel_protect_update_t * mp) { vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); vl_api_ipsec_tunnel_protect_update_reply_t *rmp; u32 sw_if_index, ii, *sa_ins = NULL; ip_address_t nh; int rv; sw_if_index = ntohl (mp->tunnel.sw_if_index); VALIDATE_SW_IF_INDEX (&(mp->tunnel)); #if WITH_LIBSSL > 0 for (ii = 0; ii < mp->tunnel.n_sa_in; ii++) vec_add1 (sa_ins, ntohl (mp->tunnel.sa_in[ii])); ip_address_decode2 (&mp->tunnel.nh, &nh); rv = ipsec_tun_protect_update (sw_if_index, &nh, ntohl (mp->tunnel.sa_out), sa_ins); #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_IPSEC_TUNNEL_PROTECT_UPDATE_REPLY); } static void vl_api_ipsec_tunnel_protect_del_t_handler (vl_api_ipsec_tunnel_protect_del_t * mp) { vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); vl_api_ipsec_tunnel_protect_del_reply_t *rmp; ip_address_t nh; u32 sw_if_index; int rv; sw_if_index = ntohl (mp->sw_if_index); VALIDATE_SW_IF_INDEX (mp); #if WITH_LIBSSL > 0 ip_address_decode2 (&mp->nh, &nh); rv = ipsec_tun_protect_del (sw_if_index, &nh); #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_IPSEC_TUNNEL_PROTECT_DEL_REPLY); } typedef struct ipsec_dump_walk_ctx_t_ { vl_api_registration_t *reg; u32 context; } ipsec_dump_walk_ctx_t; static walk_rc_t send_ipsec_tunnel_protect_details (index_t itpi, void *arg) { ipsec_dump_walk_ctx_t *ctx = arg; vl_api_ipsec_tunnel_protect_details_t *mp; ipsec_tun_protect_t *itp; u32 sai, ii = 0; itp = ipsec_tun_protect_get (itpi); mp = vl_msg_api_alloc (sizeof (*mp) + (sizeof (u32) * itp->itp_n_sa_in)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_IPSEC_TUNNEL_PROTECT_DETAILS); mp->context = ctx->context; mp->tun.sw_if_index = htonl (itp->itp_sw_if_index); ip_address_encode2 (itp->itp_key, &mp->tun.nh); mp->tun.sa_out = htonl (itp->itp_out_sa); mp->tun.n_sa_in = itp->itp_n_sa_in; /* *INDENT-OFF* */ FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai, ({ mp->tun.sa_in[ii++] = htonl (sai); })); /* *INDENT-ON* */ vl_api_send_msg (ctx->reg, (u8 *) mp); return (WALK_CONTINUE); } static void vl_api_ipsec_tunnel_protect_dump_t_handler (vl_api_ipsec_tunnel_protect_dump_t * mp) { vl_api_registration_t *reg; u32 sw_if_index; #if WITH_LIBSSL > 0 reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; ipsec_dump_walk_ctx_t ctx = { .reg = reg, .context = mp->context, }; sw_if_index = ntohl (mp->sw_if_index); if (~0 == sw_if_index) { ipsec_tun_protect_walk (send_ipsec_tunnel_protect_details, &ctx); } else { ipsec_tun_protect_walk_itf (sw_if_index, send_ipsec_tunnel_protect_details, &ctx); } #else clib_warning ("unimplemented"); #endif } static int ipsec_spd_action_decode (vl_api_ipsec_spd_action_t in, ipsec_policy_action_t * out) { in = clib_net_to_host_u32 (in); switch (in) { #define _(v,f,s) case IPSEC_API_SPD_ACTION_##f: \ *out = IPSEC_POLICY_ACTION_##f; \ return (0); foreach_ipsec_policy_action #undef _ } return (VNET_API_ERROR_UNIMPLEMENTED); } static void vl_api_ipsec_spd_entry_add_del_t_handler (vl_api_ipsec_spd_entry_add_del_t * mp) { vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); vl_api_ipsec_spd_entry_add_del_reply_t *rmp; ip46_type_t itype; u32 stat_index; int rv; stat_index = ~0; #if WITH_LIBSSL > 0 ipsec_policy_t p; clib_memset (&p, 0, sizeof (p)); p.id = ntohl (mp->entry.spd_id); p.priority = ntohl (mp->entry.priority); itype = ip_address_decode (&mp->entry.remote_address_start, &p.raddr.start); ip_address_decode (&mp->entry.remote_address_stop, &p.raddr.stop); ip_address_decode (&mp->entry.local_address_start, &p.laddr.start); ip_address_decode (&mp->entry.local_address_stop, &p.laddr.stop); p.is_ipv6 = (itype == IP46_TYPE_IP6); p.protocol = mp->entry.protocol; p.rport.start = ntohs (mp->entry.remote_port_start); p.rport.stop = ntohs (mp->entry.remote_port_stop); p.lport.start = ntohs (mp->entry.local_port_start); p.lport.stop = ntohs (mp->entry.local_port_stop); rv = ipsec_spd_action_decode (mp->entry.policy, &p.policy); if (rv) goto out; /* policy action resolve unsupported */ if (p.policy == IPSEC_POLICY_ACTION_RESOLVE) { clib_warning ("unsupported action: 'resolve'"); rv = VNET_API_ERROR_UNIMPLEMENTED; goto out; } p.sa_id = ntohl (mp->entry.sa_id); rv = ipsec_policy_mk_type (mp->entry.is_outbound, p.is_ipv6, p.policy, &p.type); if (rv) goto out; rv = ipsec_add_del_policy (vm, &p, mp->is_add, &stat_index); if (rv) goto out; #else rv = VNET_API_ERROR_UNIMPLEMENTED; goto out; #endif out: /* *INDENT-OFF* */ REPLY_MACRO2 (VL_API_IPSEC_SPD_ENTRY_ADD_DEL_REPLY, ({ rmp->stat_index = ntohl(stat_index); })); /* *INDENT-ON* */ } static void vl_api_ipsec_sad_entry_add_del_t_handler (vl_api_ipsec_sad_entry_add_del_t * mp) { vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); vl_api_ipsec_sad_entry_add_del_reply_t *rmp; ip46_address_t tun_src = { }, tun_dst = { }; ipsec_key_t crypto_key, integ_key; ipsec_crypto_alg_t crypto_alg; ipsec_integ_alg_t integ_alg; ipsec_protocol_t proto; ipsec_sa_flags_t flags; u32 id, spi, sa_index = ~0; int rv; #if WITH_LIBSSL > 0 id = ntohl (mp->entry.sad_id); spi = ntohl (mp->entry.spi); rv = ipsec_proto_decode (mp->entry.protocol, &proto); if (rv) goto out; rv = ipsec_crypto_algo_decode (mp->entry.crypto_algorithm, &crypto_alg); if (rv) goto out; rv = ipsec_integ_algo_decode (mp->entry.integrity_algorithm, &integ_alg); if (rv) goto out; ipsec_key_decode (&mp->entry.crypto_key, &crypto_key); ipsec_key_decode (&mp->entry.integrity_key, &integ_key); flags = ipsec_sa_flags_decode (mp->entry.flags); ip_address_decode (&mp->entry.tunnel_src, &tun_src); ip_address_decode (&mp->entry.tunnel_dst, &tun_dst); if (mp->is_add) rv = ipsec_sa_add_and_lock (id, spi, proto, crypto_alg, &crypto_key, integ_alg, &integ_key, flags, 0, mp->entry.salt, &tun_src, &tun_dst, &sa_index); else rv = ipsec_sa_unlock_id (id); #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif out: /* *INDENT-OFF* */ REPLY_MACRO2 (VL_API_IPSEC_SAD_ENTRY_ADD_DEL_REPLY, { rmp->stat_index = htonl (sa_index); }); /* *INDENT-ON* */ } static void send_ipsec_spds_details (ipsec_spd_t * spd, vl_api_registration_t * reg, u32 context) { vl_api_ipsec_spds_details_t *mp; u32 n_policies = 0; mp = vl_msg_api_alloc (sizeof (*mp)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_IPSEC_SPDS_DETAILS); mp->context = context; mp->spd_id = htonl (spd->id); #define _(s, n) n_policies += vec_len (spd->policies[IPSEC_SPD_POLICY_##s]); foreach_ipsec_spd_policy_type #undef _ mp->npolicies = htonl (n_policies); vl_api_send_msg (reg, (u8 *) mp); } static void vl_api_ipsec_spds_dump_t_handler (vl_api_ipsec_spds_dump_t * mp) { vl_api_registration_t *reg; ipsec_main_t *im = &ipsec_main; ipsec_spd_t *spd; #if WITH_LIBSSL > 0 reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; /* *INDENT-OFF* */ pool_foreach (spd, im->spds, ({ send_ipsec_spds_details (spd, reg, mp->context); })); /* *INDENT-ON* */ #else clib_warning ("unimplemented"); #endif } vl_api_ipsec_spd_action_t ipsec_spd_action_encode (ipsec_policy_action_t in) { vl_api_ipsec_spd_action_t out = IPSEC_API_SPD_ACTION_BYPASS; switch (in) { #define _(v,f,s) case IPSEC_POLICY_ACTION_##f: \ out = IPSEC_API_SPD_ACTION_##f; \ break; foreach_ipsec_policy_action #undef _ } return (clib_host_to_net_u32 (out)); } static void send_ipsec_spd_details (ipsec_policy_t * p, vl_api_registration_t * reg, u32 context) { vl_api_ipsec_spd_details_t *mp; mp = vl_msg_api_alloc (sizeof (*mp)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_IPSEC_SPD_DETAILS); mp->context = context; mp->entry.spd_id = htonl (p->id); mp->entry.priority = htonl (p->priority); mp->entry.is_outbound = ((p->type == IPSEC_SPD_POLICY_IP6_OUTBOUND) || (p->type == IPSEC_SPD_POLICY_IP4_OUTBOUND)); ip_address_encode (&p->laddr.start, IP46_TYPE_ANY, &mp->entry.local_address_start); ip_address_encode (&p->laddr.stop, IP46_TYPE_ANY, &mp->entry.local_address_stop); ip_address_encode (&p->raddr.start, IP46_TYPE_ANY, &mp->entry.remote_address_start); ip_address_encode (&p->raddr.stop, IP46_TYPE_ANY, &mp->entry.remote_address_stop); mp->entry.local_port_start = htons (p->lport.start); mp->entry.local_port_stop = htons (p->lport.stop); mp->entry.remote_port_start = htons (p->rport.start); mp->entry.remote_port_stop = htons (p->rport.stop); mp->entry.protocol = p->protocol; mp->entry.policy = ipsec_spd_action_encode (p->policy); mp->entry.sa_id = htonl (p->sa_id); vl_api_send_msg (reg, (u8 *) mp); } static void vl_api_ipsec_spd_dump_t_handler (vl_api_ipsec_spd_dump_t * mp) { vl_api_registration_t *reg; ipsec_main_t *im = &ipsec_main; ipsec_spd_policy_type_t ptype; ipsec_policy_t *policy; ipsec_spd_t *spd; uword *p; u32 spd_index, *ii; #if WITH_LIBSSL > 0 reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; p = hash_get (im->spd_index_by_spd_id, ntohl (mp->spd_id)); if (!p) return; spd_index = p[0]; spd = pool_elt_at_index (im->spds, spd_index); /* *INDENT-OFF* */ FOR_EACH_IPSEC_SPD_POLICY_TYPE(ptype) { vec_foreach(ii, spd->policies[ptype]) { policy = pool_elt_at_index(im->policies, *ii); if (mp->sa_id == ~(0) || ntohl (mp->sa_id) == policy->sa_id) send_ipsec_spd_details (policy, reg, mp->context); } } /* *INDENT-ON* */ #else clib_warning ("unimplemented"); #endif } static void send_ipsec_spd_interface_details (vl_api_registration_t * reg, u32 spd_index, u32 sw_if_index, u32 context) { vl_api_ipsec_spd_interface_details_t *mp; mp = vl_msg_api_alloc (sizeof (*mp)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_IPSEC_SPD_INTERFACE_DETAILS); mp->context = context; mp->spd_index = htonl (spd_index); mp->sw_if_index = htonl (sw_if_index); vl_api_send_msg (reg, (u8 *) mp); } static void vl_api_ipsec_spd_interface_dump_t_handler (vl_api_ipsec_spd_interface_dump_t * mp) { ipsec_main_t *im = &ipsec_main; vl_api_registration_t *reg; u32 k, v, spd_index; #if WITH_LIBSSL > 0 reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; if (mp->spd_index_valid) { spd_index = ntohl (mp->spd_index); /* *INDENT-OFF* */ hash_foreach(k, v, im->spd_index_by_sw_if_index, ({ if (v == spd_index) send_ipsec_spd_interface_details(reg, v, k, mp->context); })); /* *INDENT-ON* */ } else { /* *INDENT-OFF* */ hash_foreach(k, v, im->spd_index_by_sw_if_index, ({ send_ipsec_spd_interface_details(reg, v, k, mp->context); })); /* *INDENT-ON* */ } #else clib_warning ("unimplemented"); #endif } static u32 ipsec_tun_mk_input_sa_id (u32 ti) { return (0x80000000 | ti); } static u32 ipsec_tun_mk_output_sa_id (u32 ti) { return (0xc0000000 | ti); } static void vl_api_ipsec_tunnel_if_add_del_t_handler (vl_api_ipsec_tunnel_if_add_del_t * mp) { vl_api_ipsec_tunnel_if_add_del_reply_t *rmp; u32 sw_if_index = ~0; int rv; #if WITH_LIBSSL > 0 ip46_address_t local_ip = ip46_address_initializer; ip46_address_t remote_ip = ip46_address_initializer; ipsec_key_t crypto_key, integ_key; ipsec_sa_flags_t flags; ip46_type_t local_ip_type, remote_ip_type; ipip_transport_t transport; u32 fib_index; local_ip_type = ip_address_decode (&mp->local_ip, &local_ip); remote_ip_type = ip_address_decode (&mp->remote_ip, &remote_ip); transport = (IP46_TYPE_IP6 == local_ip_type ? IPIP_TRANSPORT_IP6 : IPIP_TRANSPORT_IP4); if (local_ip_type != remote_ip_type) { rv = VNET_API_ERROR_INVALID_VALUE; goto done; } flags = IPSEC_SA_FLAG_NONE; if (mp->udp_encap) flags |= IPSEC_SA_FLAG_UDP_ENCAP; if (mp->esn) flags |= IPSEC_SA_FLAG_USE_ESN; if (mp->anti_replay) flags |= IPSEC_SA_FLAG_USE_ANTI_REPLAY; ipsec_mk_key (&crypto_key, mp->remote_crypto_key, mp->remote_crypto_key_len); ipsec_mk_key (&integ_key, mp->remote_integ_key, mp->remote_integ_key_len); ipsec_mk_key (&crypto_key, mp->local_crypto_key, mp->local_crypto_key_len); ipsec_mk_key (&integ_key, mp->local_integ_key, mp->local_integ_key_len); fib_index = fib_table_find (fib_proto_from_ip46 (local_ip_type), ntohl (mp->tx_table_id)); if (~0 == fib_index) { rv = VNET_API_ERROR_NO_SUCH_FIB; goto done; } if (mp->is_add) { // remote = input, local = output /* create an ip-ip tunnel, then the two SA, then bind them */ rv = ipip_add_tunnel (transport, (mp->renumber ? ntohl (mp->show_instance) : ~0), &local_ip, &remote_ip, fib_index, TUNNEL_ENCAP_DECAP_FLAG_NONE, IP_DSCP_CS0, TUNNEL_MODE_P2P, &sw_if_index); if (rv) goto done; rv = ipsec_sa_add_and_lock (ipsec_tun_mk_input_sa_id (sw_if_index), ntohl (mp->remote_spi), IPSEC_PROTOCOL_ESP, mp->crypto_alg, &crypto_key, mp->integ_alg, &integ_key, (flags | IPSEC_SA_FLAG_IS_INBOUND), ntohl (mp->tx_table_id), mp->salt, &remote_ip, &local_ip, NULL); if (rv) goto done; rv = ipsec_sa_add_and_lock (ipsec_tun_mk_output_sa_id (sw_if_index), ntohl (mp->local_spi), IPSEC_PROTOCOL_ESP, mp->crypto_alg, &crypto_key, mp->integ_alg, &integ_key, flags, ntohl (mp->tx_table_id), mp->salt, &local_ip, &remote_ip, NULL); if (rv) goto done; rv = ipsec_tun_protect_update_one (sw_if_index, NULL, ipsec_tun_mk_output_sa_id (sw_if_index), ipsec_tun_mk_input_sa_id (sw_if_index)); if (rv) goto done; /* the SAs are locked as a result of being used for proection, * they cannot be removed from the API, since they cannot be refered * to by the API. unlock them now, so that if the tunnel is rekeyed * they-ll disapper */ ipsec_sa_unlock_id (ipsec_tun_mk_input_sa_id (sw_if_index)); ipsec_sa_unlock_id (ipsec_tun_mk_output_sa_id (sw_if_index)); } else { /* *INDENT-OFF* */ ipip_tunnel_key_t key = { .transport = transport, .fib_index = fib_index, .src = local_ip, .dst = remote_ip }; /* *INDENT-ON* */ ipip_tunnel_t *t = ipip_tunnel_db_find (&key); if (NULL != t) { rv = ipsec_tun_protect_del (t->sw_if_index, NULL); ipip_del_tunnel (t->sw_if_index); } else rv = VNET_API_ERROR_NO_SUCH_ENTRY; } #else rv = VNET_API_ERROR_UNIMPLEMENTED; #endif done: /* *INDENT-OFF* */ REPLY_MACRO2 (VL_API_IPSEC_TUNNEL_IF_ADD_DEL_REPLY, ({ rmp->sw_if_index = htonl (sw_if_index); })); /* *INDENT-ON* */ } typedef struct ipsec_sa_dump_match_ctx_t_ { index_t sai; u32 sw_if_index; } ipsec_sa_dump_match_ctx_t; static walk_rc_t ipsec_sa_dump_match_sa (index_t itpi, void *arg) { ipsec_sa_dump_match_ctx_t *ctx = arg; ipsec_tun_protect_t *itp; index_t sai; itp = ipsec_tun_protect_get (itpi); if (itp->itp_out_sa == ctx->sai) { ctx->sw_if_index = itp->itp_sw_if_index; return (WALK_STOP); } /* *INDENT-OFF* */ FOR_EACH_IPSEC_PROTECT_INPUT_SAI (itp, sai, ({ if (sai == ctx->sai) { ctx->sw_if_index = itp->itp_sw_if_index; return (WALK_STOP); } })); /* *INDENT-OFF* */ return (WALK_CONTINUE); } static walk_rc_t send_ipsec_sa_details (ipsec_sa_t * sa, void *arg) { ipsec_dump_walk_ctx_t *ctx = arg; vl_api_ipsec_sa_details_t *mp; ipsec_main_t *im = &ipsec_main; mp = vl_msg_api_alloc (sizeof (*mp)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_IPSEC_SA_DETAILS); mp->context = ctx->context; mp->entry.sad_id = htonl (sa->id); mp->entry.spi = htonl (sa->spi); mp->entry.protocol = ipsec_proto_encode (sa->protocol); mp->entry.tx_table_id = htonl (fib_table_get_table_id (sa->tx_fib_index, FIB_PROTOCOL_IP4)); mp->entry.crypto_algorithm = ipsec_crypto_algo_encode (sa->crypto_alg); ipsec_key_encode (&sa->crypto_key, &mp->entry.crypto_key); mp->entry.integrity_algorithm = ipsec_integ_algo_encode (sa->integ_alg); ipsec_key_encode (&sa->integ_key, &mp->entry.integrity_key); mp->entry.flags = ipsec_sad_flags_encode (sa); mp->entry.salt = clib_host_to_net_u32 (sa->salt); if (ipsec_sa_is_set_IS_PROTECT (sa)) { ipsec_sa_dump_match_ctx_t ctx = { .sai = sa - im->sad, .sw_if_index = ~0, }; ipsec_tun_protect_walk (ipsec_sa_dump_match_sa, &ctx); mp->sw_if_index = htonl (ctx.sw_if_index); } else mp->sw_if_index = ~0; if (ipsec_sa_is_set_IS_TUNNEL (sa)) { ip_address_encode (&sa->tunnel_src_addr, IP46_TYPE_ANY, &mp->entry.tunnel_src); ip_address_encode (&sa->tunnel_dst_addr, IP46_TYPE_ANY, &mp->entry.tunnel_dst); } mp->seq_outbound = clib_host_to_net_u64 (((u64) sa->seq)); mp->last_seq_inbound = clib_host_to_net_u64 (((u64) sa->last_seq)); if (ipsec_sa_is_set_USE_ESN (sa)) { mp->seq_outbound |= (u64) (clib_host_to_net_u32 (sa->seq_hi)); mp->last_seq_inbound |= (u64) (clib_host_to_net_u32 (sa->last_seq_hi)); } if (ipsec_sa_is_set_USE_ANTI_REPLAY (sa)) mp->replay_window = clib_host_to_net_u64 (sa->replay_window); vl_api_send_msg (ctx->reg, (u8 *) mp); return (WALK_CONTINUE); } static void vl_api_ipsec_sa_dump_t_handler (vl_api_ipsec_sa_dump_t * mp) { vl_api_registration_t *reg; #if WITH_LIBSSL > 0 reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; ipsec_dump_walk_ctx_t ctx = { .reg = reg, .context = mp->context, }; ipsec_sa_walk (send_ipsec_sa_details, &ctx); #else clib_warning ("unimplemented"); #endif } static void vl_api_ipsec_tunnel_if_set_sa_t_handler (vl_api_ipsec_tunnel_if_set_sa_t * mp) { vl_api_ipsec_tunnel_if_set_sa_reply_t *rmp; int rv; #if WITH_LIBSSL > 0 VALIDATE_SW_IF_INDEX(mp); if (mp->is_outbound) rv = ipsec_tun_protect_update_out (ntohl (mp->sw_if_index), NULL, ntohl (mp->sa_id)); else rv = ipsec_tun_protect_update_in (ntohl (mp->sw_if_index), NULL, ntohl (mp->sa_id)); #else clib_warning ("unimplemented"); #endif BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_IPSEC_TUNNEL_IF_SET_SA_REPLY); } static void vl_api_ipsec_backend_dump_t_handler (vl_api_ipsec_backend_dump_t * mp) { vl_api_registration_t *rp; ipsec_main_t *im = &ipsec_main; u32 context = mp->context; rp = vl_api_client_index_to_registration (mp->client_index); if (rp == 0) { clib_warning ("Client %d AWOL", mp->client_index); return; } ipsec_ah_backend_t *ab; ipsec_esp_backend_t *eb; /* *INDENT-OFF* */ pool_foreach (ab, im->ah_backends, { vl_api_ipsec_backend_details_t *mp = vl_msg_api_alloc (sizeof (*mp)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_IPSEC_BACKEND_DETAILS); mp->context = context; snprintf ((char *)mp->name, sizeof (mp->name), "%.*s", vec_len (ab->name), ab->name); mp->protocol = ntohl (IPSEC_API_PROTO_AH); mp->index = ab - im->ah_backends; mp->active = mp->index == im->ah_current_backend ? 1 : 0; vl_api_send_msg (rp, (u8 *)mp); }); pool_foreach (eb, im->esp_backends, { vl_api_ipsec_backend_details_t *mp = vl_msg_api_alloc (sizeof (*mp)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_IPSEC_BACKEND_DETAILS); mp->context = context; snprintf ((char *)mp->name, sizeof (mp->name), "%.*s", vec_len (eb->name), eb->name); mp->protocol = ntohl (IPSEC_API_PROTO_ESP); mp->index = eb - im->esp_backends; mp->active = mp->index == im->esp_current_backend ? 1 : 0; vl_api_send_msg (rp, (u8 *)mp); }); /* *INDENT-ON* */ } static void vl_api_ipsec_select_backend_t_handler (vl_api_ipsec_select_backend_t * mp) { ipsec_main_t *im = &ipsec_main; vl_api_ipsec_select_backend_reply_t *rmp; ipsec_protocol_t protocol; int rv = 0; if (pool_elts (im->sad) > 0) { rv = VNET_API_ERROR_INSTANCE_IN_USE; goto done; } rv = ipsec_proto_decode (mp->protocol, &protocol); if (rv) goto done; #if WITH_LIBSSL > 0 switch (protocol) { case IPSEC_PROTOCOL_ESP: rv = ipsec_select_esp_backend (im, mp->index); break; case IPSEC_PROTOCOL_AH: rv = ipsec_select_ah_backend (im, mp->index); break; default: rv = VNET_API_ERROR_INVALID_PROTOCOL; break; } #else clib_warning ("unimplemented"); /* FIXME */ #endif done: REPLY_MACRO (VL_API_IPSEC_SELECT_BACKEND_REPLY); } /* * ipsec_api_hookup * Add vpe's API message handlers to the table. * vlib has already mapped shared memory and * added the client registration handlers. * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() */ #define vl_msg_name_crc_list #include <vnet/vnet_all_api_h.h> #undef vl_msg_name_crc_list static void setup_message_id_table (api_main_t * am) { #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); foreach_vl_msg_name_crc_ipsec; #undef _ } static clib_error_t * ipsec_api_hookup (vlib_main_t * vm) { api_main_t *am = vlibapi_get_main (); #define _(N,n) \ vl_msg_api_set_handlers(VL_API_##N, #n, \ vl_api_##n##_t_handler, \ vl_noop_handler, \ vl_api_##n##_t_endian, \ vl_api_##n##_t_print, \ sizeof(vl_api_##n##_t), 1); foreach_vpe_api_msg; #undef _ /* * Adding and deleting SAs is MP safe since when they are added/delete * no traffic is using them */ am->is_mp_safe[VL_API_IPSEC_SAD_ENTRY_ADD_DEL] = 1; am->is_mp_safe[VL_API_IPSEC_SAD_ENTRY_ADD_DEL_REPLY] = 1; /* * Set up the (msg_name, crc, message-id) table */ setup_message_id_table (am); return 0; } VLIB_API_INIT_FUNCTION (ipsec_api_hookup); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */