/* * Copyright (c) 2018 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/session/application_interface.h> #include <vppinfra/lock.h> #include <vnet/tls/tls.h> static tls_main_t tls_main; static tls_engine_vft_t *tls_vfts; #define TLS_INVALID_HANDLE ~0 #define TLS_IDX_MASK 0x00FFFFFF #define TLS_ENGINE_TYPE_SHIFT 29 void tls_disconnect (u32 ctx_handle, u32 thread_index); static void tls_disconnect_transport (tls_ctx_t * ctx) { vnet_disconnect_args_t a = { .handle = ctx->tls_session_handle, .app_index = tls_main.app_index, }; if (vnet_disconnect_session (&a)) clib_warning ("disconnect returned"); } tls_engine_type_t tls_get_available_engine (void) { int i; for (i = 0; i < vec_len (tls_vfts); i++) { if (tls_vfts[i].ctx_alloc) return i; } return TLS_ENGINE_NONE; } int tls_add_vpp_q_rx_evt (stream_session_t * s) { if (svm_fifo_set_event (s->server_rx_fifo)) session_send_io_evt_to_thread (s->server_rx_fifo, FIFO_EVENT_APP_RX); return 0; } int tls_add_vpp_q_builtin_rx_evt (stream_session_t * s) { if (svm_fifo_set_event (s->server_rx_fifo)) session_send_io_evt_to_thread (s->server_rx_fifo, FIFO_EVENT_BUILTIN_RX); return 0; } int tls_add_vpp_q_tx_evt (stream_session_t * s) { if (svm_fifo_set_event (s->server_tx_fifo)) session_send_io_evt_to_thread (s->server_tx_fifo, FIFO_EVENT_APP_TX); return 0; } int tls_add_vpp_q_builtin_tx_evt (stream_session_t * s) { if (svm_fifo_set_event (s->server_tx_fifo)) session_send_io_evt_to_thread_custom (s, s->thread_index, FIFO_EVENT_BUILTIN_TX); return 0; } static inline int tls_add_app_q_evt (app_worker_t * app, stream_session_t * app_session) { return app_worker_lock_and_send_event (app, app_session, FIFO_EVENT_APP_RX); } u32 tls_listener_ctx_alloc (void) { tls_main_t *tm = &tls_main; tls_ctx_t *ctx; pool_get (tm->listener_ctx_pool, ctx); clib_memset (ctx, 0, sizeof (*ctx)); return ctx - tm->listener_ctx_pool; } void tls_listener_ctx_free (tls_ctx_t * ctx) { if (CLIB_DEBUG) memset (ctx, 0xfb, sizeof (*ctx)); pool_put (tls_main.listener_ctx_pool, ctx); } tls_ctx_t * tls_listener_ctx_get (u32 ctx_index) { return pool_elt_at_index (tls_main.listener_ctx_pool, ctx_index); } u32 tls_listener_ctx_index (tls_ctx_t * ctx) { return (ctx - tls_main.listener_ctx_pool); } u32 tls_ctx_half_open_alloc (void) { tls_main_t *tm = &tls_main; u8 will_expand = 0; tls_ctx_t *ctx; u32 ctx_index; pool_get_aligned_will_expand (tm->half_open_ctx_pool, will_expand, 0); if (PREDICT_FALSE (will_expand && vlib_num_workers ())) { clib_rwlock_writer_lock (&tm->half_open_rwlock); pool_get (tm->half_open_ctx_pool, ctx); ctx_index = ctx - tm->half_open_ctx_pool; clib_rwlock_writer_unlock (&tm->half_open_rwlock); } else { /* reader lock assumption: only main thread will call pool_get */ clib_rwlock_reader_lock (&tm->half_open_rwlock); pool_get (tm->half_open_ctx_pool, ctx); ctx_index = ctx - tm->half_open_ctx_pool; clib_rwlock_reader_unlock (&tm->half_open_rwlock); } clib_memset (ctx, 0, sizeof (*ctx)); return ctx_index; } void tls_ctx_half_open_free (u32 ho_index) { tls_main_t *tm = &tls_main; clib_rwlock_writer_lock (&tm->half_open_rwlock); pool_put_index (tls_main.half_open_ctx_pool, ho_index); clib_rwlock_writer_unlock (&tm->half_open_rwlock); } tls_ctx_t * tls_ctx_half_open_get (u32 ctx_index) { tls_main_t *tm = &tls_main; clib_rwlock_reader_lock (&tm->half_open_rwlock); return pool_elt_at_index (tm->half_open_ctx_pool, ctx_index); } void tls_ctx_half_open_reader_unlock () { clib_rwlock_reader_unlock (&tls_main.half_open_rwlock); } u32 tls_ctx_half_open_index (tls_ctx_t * ctx) { return (ctx - tls_main.half_open_ctx_pool); } void tls_notify_app_enqueue (tls_ctx_t * ctx, stream_session_t * app_session) { app_worker_t *app; app = app_worker_get_if_valid (app_session->app_wrk_index); if (PREDICT_TRUE (app != 0)) tls_add_app_q_evt (app, app_session); } int tls_notify_app_accept (tls_ctx_t * ctx) { stream_session_t *app_listener, *app_session; segment_manager_t *sm; app_worker_t *app_wrk; application_t *app; tls_ctx_t *lctx; int rv; app_wrk = app_worker_get_if_valid (ctx->parent_app_index); if (!app_wrk) { tls_disconnect (ctx->tls_ctx_handle, vlib_get_thread_index ()); return -1; } app = application_get (app_wrk->app_index); lctx = tls_listener_ctx_get (ctx->listener_ctx_index); app_session = session_alloc (vlib_get_thread_index ()); app_session->app_wrk_index = ctx->parent_app_index; app_session->connection_index = ctx->tls_ctx_handle; app_listener = listen_session_get_from_handle (lctx->app_session_handle); app_session->session_type = app_listener->session_type; app_session->listener_index = app_listener->session_index; sm = app_worker_get_listen_segment_manager (app_wrk, app_listener); app_session->t_app_index = tls_main.app_index; if ((rv = session_alloc_fifos (sm, app_session))) { TLS_DBG (1, "failed to allocate fifos"); return rv; } ctx->c_s_index = app_session->session_index; ctx->app_session_handle = session_handle (app_session); session_lookup_add_connection (&ctx->connection, session_handle (app_session)); return app->cb_fns.session_accept_callback (app_session); } int tls_notify_app_connected (tls_ctx_t * ctx, u8 is_failed) { int (*cb_fn) (u32, u32, stream_session_t *, u8); stream_session_t *app_session; segment_manager_t *sm; app_worker_t *app_wrk; application_t *app; app_wrk = app_worker_get_if_valid (ctx->parent_app_index); if (!app_wrk) { tls_disconnect_transport (ctx); return -1; } app = application_get (app_wrk->app_index); cb_fn = app->cb_fns.session_connected_callback; if (is_failed) goto failed; sm = app_worker_get_connect_segment_manager (app_wrk); app_session = session_alloc (vlib_get_thread_index ()); app_session->app_wrk_index = ctx->parent_app_index; app_session->connection_index = ctx->tls_ctx_handle; app_session->session_type = session_type_from_proto_and_ip (TRANSPORT_PROTO_TLS, ctx->tcp_is_ip4); app_session->t_app_index = tls_main.app_index; if (session_alloc_fifos (sm, app_session)) goto failed; ctx->app_session_handle = session_handle (app_session); ctx->c_s_index = app_session->session_index; app_session->session_state = SESSION_STATE_CONNECTING; if (cb_fn (ctx->parent_app_index, ctx->parent_app_api_context, app_session, 0 /* not failed */ )) { TLS_DBG (1, "failed to notify app"); tls_disconnect (ctx->tls_ctx_handle, vlib_get_thread_index ()); return -1; } app_session->session_state = SESSION_STATE_READY; session_lookup_add_connection (&ctx->connection, session_handle (app_session)); return 0; failed: tls_disconnect (ctx->tls_ctx_handle, vlib_get_thread_index ()); return cb_fn (ctx->parent_app_index, ctx->parent_app_api_context, 0, 1 /* failed */ ); } static inline void tls_ctx_parse_handle (u32 ctx_handle, u32 * ctx_index, u32 * engine_type) { *ctx_index = ctx_handle & TLS_IDX_MASK; *engine_type = ctx_handle >> TLS_ENGINE_TYPE_SHIFT; } static inline tls_engine_type_t tls_get_engine_type (tls_engine_type_t preferred) { if (!tls_vfts[preferred].ctx_alloc) return tls_get_available_engine (); return preferred; } static inline u32 tls_ctx_alloc (tls_engine_type_t engine_type) { u32 ctx_index; ctx_index = tls_vfts[engine_type].ctx_alloc (); return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index); } static inline void tls_ctx_free (tls_ctx_t * ctx) { vec_free (ctx->srv_hostname); tls_vfts[ctx->tls_ctx_engine].ctx_free (ctx); } static inline tls_ctx_t * tls_ctx_get (u32 ctx_handle) { u32 ctx_index, engine_type; tls_ctx_parse_handle (ctx_handle, &ctx_index, &engine_type); return tls_vfts[engine_type].ctx_get (ctx_index); } static inline tls_ctx_t * tls_ctx_get_w_thread (u32 ctx_handle, u8 thread_index) { u32 ctx_index, engine_type; tls_ctx_parse_handle (ctx_handle, &ctx_index, &engine_type); return tls_vfts[engine_type].ctx_get_w_thread (ctx_index, thread_index); } static inline int tls_ctx_init_server (tls_ctx_t * ctx) { return tls_vfts[ctx->tls_ctx_engine].ctx_init_server (ctx); } static inline int tls_ctx_init_client (tls_ctx_t * ctx) { return tls_vfts[ctx->tls_ctx_engine].ctx_init_client (ctx); } static inline int tls_ctx_write (tls_ctx_t * ctx, stream_session_t * app_session) { return tls_vfts[ctx->tls_ctx_engine].ctx_write (ctx, app_session); } static inline int tls_ctx_read (tls_ctx_t * ctx, stream_session_t * tls_session) { return tls_vfts[ctx->tls_ctx_engine].ctx_read (ctx, tls_session); } static inline u8 tls_ctx_handshake_is_over (tls_ctx_t * ctx) { return tls_vfts[ctx->tls_ctx_engine].ctx_handshake_is_over (ctx); } void tls_session_reset_callback (stream_session_t * s) { clib_warning ("called..."); } int tls_add_segment_callback (u32 client_index, const ssvm_private_t * fs) { /* No-op for builtin */ return 0; } int tls_del_segment_callback (u32 client_index, const ssvm_private_t * fs) { return 0; } void tls_session_disconnect_callback (stream_session_t * tls_session) { stream_session_t *app_session; tls_ctx_t *ctx; app_worker_t *app_wrk; application_t *app; ctx = tls_ctx_get (tls_session->opaque); if (!tls_ctx_handshake_is_over (ctx)) { stream_session_disconnect (tls_session); return; } ctx->is_passive_close = 1; app_wrk = app_worker_get (ctx->parent_app_index); app = application_get (app_wrk->app_index); app_session = session_get_from_handle (ctx->app_session_handle); app->cb_fns.session_disconnect_callback (app_session); } int tls_session_accept_callback (stream_session_t * tls_session) { stream_session_t *tls_listener; tls_ctx_t *lctx, *ctx; u32 ctx_handle; tls_listener = listen_session_get (tls_session->listener_index); lctx = tls_listener_ctx_get (tls_listener->opaque); ctx_handle = tls_ctx_alloc (lctx->tls_ctx_engine); ctx = tls_ctx_get (ctx_handle); memcpy (ctx, lctx, sizeof (*lctx)); ctx->c_thread_index = vlib_get_thread_index (); ctx->tls_ctx_handle = ctx_handle; tls_session->session_state = SESSION_STATE_READY; tls_session->opaque = ctx_handle; ctx->tls_session_handle = session_handle (tls_session); ctx->listener_ctx_index = tls_listener->opaque; TLS_DBG (1, "Accept on listener %u new connection [%u]%x", tls_listener->opaque, vlib_get_thread_index (), ctx_handle); return tls_ctx_init_server (ctx); } int tls_app_tx_callback (stream_session_t * app_session) { tls_ctx_t *ctx; if (PREDICT_FALSE (app_session->session_state == SESSION_STATE_CLOSED)) return 0; ctx = tls_ctx_get (app_session->connection_index); tls_ctx_write (ctx, app_session); return 0; } int tls_app_rx_callback (stream_session_t * tls_session) { tls_ctx_t *ctx; ctx = tls_ctx_get (tls_session->opaque); tls_ctx_read (ctx, tls_session); return 0; } int tls_session_connected_callback (u32 tls_app_index, u32 ho_ctx_index, stream_session_t * tls_session, u8 is_fail) { tls_ctx_t *ho_ctx, *ctx; u32 ctx_handle; ho_ctx = tls_ctx_half_open_get (ho_ctx_index); if (is_fail) { int (*cb_fn) (u32, u32, stream_session_t *, u8), rv = 0; u32 wrk_index, api_context; app_worker_t *app_wrk; application_t *app; wrk_index = ho_ctx->parent_app_index; app_wrk = app_worker_get_if_valid (ho_ctx->parent_app_index); if (app_wrk) { api_context = ho_ctx->c_s_index; app = application_get (app_wrk->app_index); cb_fn = app->cb_fns.session_connected_callback; rv = cb_fn (wrk_index, api_context, 0, 1 /* failed */ ); } tls_ctx_half_open_reader_unlock (); tls_ctx_half_open_free (ho_ctx_index); return rv; } ctx_handle = tls_ctx_alloc (ho_ctx->tls_ctx_engine); ctx = tls_ctx_get (ctx_handle); clib_memcpy_fast (ctx, ho_ctx, sizeof (*ctx)); tls_ctx_half_open_reader_unlock (); tls_ctx_half_open_free (ho_ctx_index); ctx->c_thread_index = vlib_get_thread_index (); ctx->tls_ctx_handle = ctx_handle; TLS_DBG (1, "TCP connect for %u returned %u. New connection [%u]%x", ho_ctx_index, is_fail, vlib_get_thread_index (), (ctx) ? ctx_handle : ~0); ctx->tls_session_handle = session_handle (tls_session); tls_session->opaque = ctx_handle; tls_session->session_state = SESSION_STATE_READY; return tls_ctx_init_client (ctx); } /* *INDENT-OFF* */ static session_cb_vft_t tls_app_cb_vft = { .session_accept_callback = tls_session_accept_callback, .session_disconnect_callback = tls_session_disconnect_callback, .session_connected_callback = tls_session_connected_callback, .session_reset_callback = tls_session_reset_callback, .add_segment_callback = tls_add_segment_callback, .del_segment_callback = tls_del_segment_callback, .builtin_app_rx_callback = tls_app_rx_callback, .builtin_app_tx_callback = tls_app_tx_callback, }; /* *INDENT-ON* */ int tls_connect (transport_endpoint_cfg_t * tep) { vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs; session_endpoint_cfg_t *sep; tls_engine_type_t engine_type; tls_main_t *tm = &tls_main; app_worker_t *app_wrk; clib_error_t *error; application_t *app; tls_ctx_t *ctx; u32 ctx_index; sep = (session_endpoint_cfg_t *) tep; app_wrk = app_worker_get (sep->app_wrk_index); app = application_get (app_wrk->app_index); engine_type = tls_get_engine_type (app->tls_engine); if (engine_type == TLS_ENGINE_NONE) { clib_warning ("No tls engine_type available"); return -1; } ctx_index = tls_ctx_half_open_alloc (); ctx = tls_ctx_half_open_get (ctx_index); ctx->parent_app_index = sep->app_wrk_index; ctx->parent_app_api_context = sep->opaque; ctx->tcp_is_ip4 = sep->is_ip4; if (sep->hostname) { ctx->srv_hostname = format (0, "%v", sep->hostname); vec_terminate_c_string (ctx->srv_hostname); } tls_ctx_half_open_reader_unlock (); app_worker_alloc_connects_segment_manager (app_wrk); ctx->tls_ctx_engine = engine_type; clib_memcpy_fast (&cargs->sep, sep, sizeof (session_endpoint_t)); cargs->sep.transport_proto = TRANSPORT_PROTO_TCP; cargs->app_index = tm->app_index; cargs->api_context = ctx_index; if ((error = vnet_connect (cargs))) return clib_error_get_code (error); TLS_DBG (1, "New connect request %u engine %d", ctx_index, engine_type); return 0; } void tls_disconnect (u32 ctx_handle, u32 thread_index) { tls_ctx_t *ctx; TLS_DBG (1, "Disconnecting %x", ctx_handle); ctx = tls_ctx_get (ctx_handle); tls_disconnect_transport (ctx); stream_session_delete_notify (&ctx->connection); tls_ctx_free (ctx); } u32 tls_start_listen (u32 app_listener_index, transport_endpoint_t * tep) { vnet_bind_args_t _bargs, *args = &_bargs; app_worker_t *app_wrk; tls_main_t *tm = &tls_main; session_handle_t tls_handle; session_endpoint_cfg_t *sep; stream_session_t *tls_listener; stream_session_t *app_listener; tls_engine_type_t engine_type; application_t *app; tls_ctx_t *lctx; u32 lctx_index; sep = (session_endpoint_cfg_t *) tep; app_wrk = app_worker_get (sep->app_wrk_index); app = application_get (app_wrk->app_index); engine_type = tls_get_engine_type (app->tls_engine); if (engine_type == TLS_ENGINE_NONE) { clib_warning ("No tls engine_type available"); return -1; } sep->transport_proto = TRANSPORT_PROTO_TCP; clib_memset (args, 0, sizeof (*args)); args->app_index = tm->app_index; args->sep_ext = *sep; if (vnet_bind (args)) return -1; tls_handle = args->handle; lctx_index = tls_listener_ctx_alloc (); tls_listener = listen_session_get_from_handle (tls_handle); tls_listener->opaque = lctx_index; app_listener = listen_session_get (app_listener_index); lctx = tls_listener_ctx_get (lctx_index); lctx->parent_app_index = sep->app_wrk_index; lctx->tls_session_handle = tls_handle; lctx->app_session_handle = listen_session_get_handle (app_listener); lctx->tcp_is_ip4 = sep->is_ip4; lctx->tls_ctx_engine = engine_type; tls_vfts[engine_type].ctx_start_listen (lctx); TLS_DBG (1, "Started listening %d, engine type %d", lctx_index, engine_type); return lctx_index; } u32 tls_stop_listen (u32 lctx_index) { tls_engine_type_t engine_type; tls_ctx_t *lctx; lctx = tls_listener_ctx_get (lctx_index); vnet_unbind_args_t a = { .handle = lctx->tls_session_handle, .app_index = tls_main.app_index, .wrk_map_index = 0 /* default wrk */ }; if (vnet_unbind (&a)) clib_warning ("unbind returned"); engine_type = lctx->tls_ctx_engine; tls_vfts[engine_type].ctx_stop_listen (lctx); tls_listener_ctx_free (lctx); return 0; } transport_connection_t * tls_connection_get (u32 ctx_index, u32 thread_index) { tls_ctx_t *ctx; ctx = tls_ctx_get_w_thread (ctx_index, thread_index); return &ctx->connection; } transport_connection_t * tls_listener_get (u32 listener_index) { tls_ctx_t *ctx; ctx = tls_listener_ctx_get (listener_index); return &ctx->connection; } u8 * format_tls_ctx (u8 * s, va_list * args) { tls_ctx_t *ctx = va_arg (*args, tls_ctx_t *); u32 thread_index = va_arg (*args, u32); u32 child_si, child_ti; session_parse_handle (ctx->tls_session_handle, &child_si, &child_ti); if (thread_index != child_ti) clib_warning ("app and tls sessions are on different threads!"); s = format (s, "[#%d][TLS] app %u child %u", child_ti, ctx->parent_app_index, child_si); return s; } u8 * format_tls_connection (u8 * s, va_list * args) { u32 ctx_index = va_arg (*args, u32); u32 thread_index = va_arg (*args, u32); u32 verbose = va_arg (*args, u32); tls_ctx_t *ctx; ctx = tls_ctx_get_w_thread (ctx_index, thread_index); if (!ctx) return s; s = format (s, "%-50U", format_tls_ctx, ctx, thread_index); if (verbose) { stream_session_t *ts; ts = session_get_from_handle (ctx->app_session_handle); s = format (s, "state: %-7u", ts->session_state); if (verbose > 1) s = format (s, "\n"); } return s; } u8 * format_tls_listener (u8 * s, va_list * args) { u32 tc_index = va_arg (*args, u32); tls_ctx_t *ctx = tls_listener_ctx_get (tc_index); u32 listener_index, thread_index; listen_session_parse_handle (ctx->tls_session_handle, &listener_index, &thread_index); return format (s, "[TLS] listener app %u child %u", ctx->parent_app_index, listener_index); } u8 * format_tls_half_open (u8 * s, va_list * args) { u32 tc_index = va_arg (*args, u32); tls_ctx_t *ctx = tls_ctx_half_open_get (tc_index); s = format (s, "[TLS] half-open app %u", ctx->parent_app_index); tls_ctx_half_open_reader_unlock (); return s; } /* *INDENT-OFF* */ const static transport_proto_vft_t tls_proto = { .open = tls_connect, .close = tls_disconnect, .bind = tls_start_listen, .get_connection = tls_connection_get, .get_listener = tls_listener_get, .unbind = tls_stop_listen, .tx_type = TRANSPORT_TX_INTERNAL, .service_type = TRANSPORT_SERVICE_APP, .format_connection = format_tls_connection, .format_half_open = format_tls_half_open, .format_listener = format_tls_listener, }; /* *INDENT-ON* */ void tls_register_engine (const tls_engine_vft_t * vft, tls_engine_type_t type) { vec_validate (tls_vfts, type); tls_vfts[type] = *vft; } static clib_error_t * tls_init (vlib_main_t * vm) { vlib_thread_main_t *vtm = vlib_get_thread_main (); vnet_app_attach_args_t _a, *a = &_a; u64 options[APP_OPTIONS_N_OPTIONS]; u32 segment_size = 512 << 20; tls_main_t *tm = &tls_main; u32 fifo_size = 64 << 10; u32 num_threads; num_threads = 1 /* main thread */ + vtm->n_threads; clib_memset (a, 0, sizeof (*a)); clib_memset (options, 0, sizeof (options)); a->session_cb_vft = &tls_app_cb_vft; a->api_client_index = APP_INVALID_INDEX; a->options = options; a->name = format (0, "tls"); a->options[APP_OPTIONS_SEGMENT_SIZE] = segment_size; a->options[APP_OPTIONS_RX_FIFO_SIZE] = fifo_size; a->options[APP_OPTIONS_TX_FIFO_SIZE] = fifo_size; a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN; a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE; a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_IS_TRANSPORT_APP; if (vnet_application_attach (a)) { clib_warning ("failed to attach tls app"); return clib_error_return (0, "failed to attach tls app"); } if (!tm->ca_cert_path) tm->ca_cert_path = TLS_CA_CERT_PATH; tm->app_index = a->app_index; clib_rwlock_init (&tm->half_open_rwlock); vec_validate (tm->rx_bufs, num_threads - 1); vec_validate (tm->tx_bufs, num_threads - 1); transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto, FIB_PROTOCOL_IP4, ~0); transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto, FIB_PROTOCOL_IP6, ~0); vec_free (a->name); return 0; } VLIB_INIT_FUNCTION (tls_init); static clib_error_t * tls_config_fn (vlib_main_t * vm, unformat_input_t * input) { tls_main_t *tm = &tls_main; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "use-test-cert-in-ca")) tm->use_test_cert_in_ca = 1; else if (unformat (input, "ca-cert-path %s", &tm->ca_cert_path)) ; else return clib_error_return (0, "unknown input `%U'", format_unformat_error, input); } return 0; } VLIB_EARLY_CONFIG_FUNCTION (tls_config_fn, "tls"); tls_main_t * vnet_tls_get_main (void) { return &tls_main; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */