/* * Copyright (c) 2017-2019 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.h> #include <vnet/session/application_interface.h> #include <vnet/session/application_namespace.h> #include <vnet/session/application_local.h> #include <vnet/session/session.h> static app_main_t app_main; #define app_interface_check_thread_and_barrier(_fn, _arg) \ if (PREDICT_FALSE (!vlib_thread_is_main_w_barrier ())) \ { \ vlib_rpc_call_main_thread (_fn, (u8 *) _arg, sizeof(*_arg)); \ return 0; \ } static app_listener_t * app_listener_alloc (application_t * app) { app_listener_t *app_listener; pool_get (app->listeners, app_listener); clib_memset (app_listener, 0, sizeof (*app_listener)); app_listener->al_index = app_listener - app->listeners; app_listener->app_index = app->app_index; app_listener->session_index = SESSION_INVALID_INDEX; app_listener->local_index = SESSION_INVALID_INDEX; app_listener->ls_handle = SESSION_INVALID_HANDLE; return app_listener; } app_listener_t * app_listener_get (application_t * app, u32 app_listener_index) { return pool_elt_at_index (app->listeners, app_listener_index); } static void app_listener_free (application_t * app, app_listener_t * app_listener) { clib_bitmap_free (app_listener->workers); if (CLIB_DEBUG) clib_memset (app_listener, 0xfa, sizeof (*app_listener)); pool_put (app->listeners, app_listener); } session_handle_t app_listener_handle (app_listener_t * al) { return al->ls_handle; } app_listener_t * app_listener_get_w_session (session_t * ls) { application_t *app; app = application_get_if_valid (ls->app_index); if (!app) return 0; return app_listener_get (app, ls->al_index); } session_handle_t app_listen_session_handle (session_t * ls) { app_listener_t *al; al = app_listener_get_w_session (ls); if (!al) return listen_session_get_handle (ls); return al->ls_handle; } app_listener_t * app_listener_get_w_handle (session_handle_t handle) { session_t *ls; ls = session_get_from_handle_if_valid (handle); if (!ls) return 0; return app_listener_get_w_session (ls); } app_listener_t * app_listener_lookup (application_t * app, session_endpoint_cfg_t * sep_ext) { u32 table_index, fib_proto; session_endpoint_t *sep; session_handle_t handle; session_t *ls; sep = (session_endpoint_t *) sep_ext; if (application_has_local_scope (app) && session_endpoint_is_local (sep)) { table_index = application_local_session_table (app); handle = session_lookup_endpoint_listener (table_index, sep, 1); if (handle != SESSION_INVALID_HANDLE) { ls = listen_session_get_from_handle (handle); return app_listener_get_w_session (ls); } } fib_proto = session_endpoint_fib_proto (sep); table_index = application_session_table (app, fib_proto); handle = session_lookup_endpoint_listener (table_index, sep, 1); if (handle != SESSION_INVALID_HANDLE) { ls = listen_session_get_from_handle (handle); return app_listener_get_w_session ((session_t *) ls); } return 0; } int app_listener_alloc_and_init (application_t * app, session_endpoint_cfg_t * sep, app_listener_t ** listener) { app_listener_t *app_listener; transport_connection_t *tc; session_handle_t lh; session_type_t st; session_t *ls = 0; u32 al_index; int rv; app_listener = app_listener_alloc (app); al_index = app_listener->al_index; st = session_type_from_proto_and_ip (sep->transport_proto, sep->is_ip4); /* * Add session endpoint to local session table. Only binds to "inaddr_any" * (i.e., zero address) are added to local scope table. */ if (application_has_local_scope (app) && session_endpoint_is_local ((session_endpoint_t *) sep)) { session_type_t local_st; u32 table_index; local_st = session_type_from_proto_and_ip (TRANSPORT_PROTO_NONE, sep->is_ip4); ls = listen_session_alloc (0, local_st); ls->app_index = app->app_index; ls->app_wrk_index = sep->app_wrk_index; lh = session_handle (ls); if ((rv = session_listen (ls, sep))) { ls = session_get_from_handle (lh); session_free (ls); return rv; } ls = session_get_from_handle (lh); app_listener = app_listener_get (app, al_index); app_listener->local_index = ls->session_index; app_listener->ls_handle = lh; ls->al_index = al_index; table_index = application_local_session_table (app); session_lookup_add_session_endpoint (table_index, (session_endpoint_t *) sep, lh); } if (application_has_global_scope (app)) { /* * Start listening on local endpoint for requested transport and scope. * Creates a stream session with state LISTENING to be used in session * lookups, prior to establishing connection. Requests transport to * build it's own specific listening connection. */ ls = listen_session_alloc (0, st); ls->app_index = app->app_index; ls->app_wrk_index = sep->app_wrk_index; /* Listen pool can be reallocated if the transport is * recursive (tls) */ lh = listen_session_get_handle (ls); if ((rv = session_listen (ls, sep))) { ls = listen_session_get_from_handle (lh); session_free (ls); return rv; } ls = listen_session_get_from_handle (lh); app_listener = app_listener_get (app, al_index); app_listener->session_index = ls->session_index; app_listener->ls_handle = lh; ls->al_index = al_index; /* Add to the global lookup table after transport was initialized. * Lookup table needs to be populated only now because sessions * with cut-through transport are are added to app local tables that * are not related to network fibs, i.e., cannot be added as * connections */ tc = session_get_transport (ls); if (!(tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP)) session_lookup_add_connection (tc, lh); } if (!ls) { app_listener_free (app, app_listener); return -1; } *listener = app_listener; return 0; } void app_listener_cleanup (app_listener_t * al) { application_t *app = application_get (al->app_index); session_t *ls; if (al->session_index != SESSION_INVALID_INDEX) { ls = session_get (al->session_index, 0); session_stop_listen (ls); listen_session_free (ls); } if (al->local_index != SESSION_INVALID_INDEX) { session_endpoint_t sep = SESSION_ENDPOINT_NULL; u32 table_index; table_index = application_local_session_table (app); ls = listen_session_get (al->local_index); ct_session_endpoint (ls, &sep); session_lookup_del_session_endpoint (table_index, &sep); session_stop_listen (ls); listen_session_free (ls); } app_listener_free (app, al); } static app_worker_t * app_listener_select_worker (application_t * app, app_listener_t * al) { u32 wrk_index; app = application_get (al->app_index); wrk_index = clib_bitmap_next_set (al->workers, al->accept_rotor + 1); if (wrk_index == ~0) wrk_index = clib_bitmap_first_set (al->workers); ASSERT (wrk_index != ~0); al->accept_rotor = wrk_index; return application_get_worker (app, wrk_index); } session_t * app_listener_get_session (app_listener_t * al) { if (al->session_index == SESSION_INVALID_INDEX) return 0; return listen_session_get (al->session_index); } session_t * app_listener_get_local_session (app_listener_t * al) { if (al->local_index == SESSION_INVALID_INDEX) return 0; return listen_session_get (al->local_index); } static app_worker_map_t * app_worker_map_alloc (application_t * app) { app_worker_map_t *map; pool_get (app->worker_maps, map); clib_memset (map, 0, sizeof (*map)); return map; } static u32 app_worker_map_index (application_t * app, app_worker_map_t * map) { return (map - app->worker_maps); } static void app_worker_map_free (application_t * app, app_worker_map_t * map) { pool_put (app->worker_maps, map); } static app_worker_map_t * app_worker_map_get (application_t * app, u32 map_index) { if (pool_is_free_index (app->worker_maps, map_index)) return 0; return pool_elt_at_index (app->worker_maps, map_index); } static const u8 * app_get_name (application_t * app) { return app->name; } u32 application_session_table (application_t * app, u8 fib_proto) { app_namespace_t *app_ns; app_ns = app_namespace_get (app->ns_index); if (!application_has_global_scope (app)) return APP_INVALID_INDEX; if (fib_proto == FIB_PROTOCOL_IP4) return session_lookup_get_index_for_fib (fib_proto, app_ns->ip4_fib_index); else return session_lookup_get_index_for_fib (fib_proto, app_ns->ip6_fib_index); } u32 application_local_session_table (application_t * app) { app_namespace_t *app_ns; if (!application_has_local_scope (app)) return APP_INVALID_INDEX; app_ns = app_namespace_get (app->ns_index); return app_ns->local_table_index; } /** * Returns app name for app-index */ const u8 * application_name_from_index (u32 app_index) { application_t *app = application_get (app_index); if (!app) return 0; return app_get_name (app); } static void application_api_table_add (u32 app_index, u32 api_client_index) { if (api_client_index != APP_INVALID_INDEX) hash_set (app_main.app_by_api_client_index, api_client_index, app_index); } static void application_api_table_del (u32 api_client_index) { hash_unset (app_main.app_by_api_client_index, api_client_index); } static void application_name_table_add (application_t * app) { hash_set_mem (app_main.app_by_name, app->name, app->app_index); } static void application_name_table_del (application_t * app) { hash_unset_mem (app_main.app_by_name, app->name); } application_t * application_lookup (u32 api_client_index) { uword *p; p = hash_get (app_main.app_by_api_client_index, api_client_index); if (p) return application_get_if_valid (p[0]); return 0; } application_t * application_lookup_name (const u8 * name) { uword *p; p = hash_get_mem (app_main.app_by_name, name); if (p) return application_get (p[0]); return 0; } static application_t * application_alloc (void) { application_t *app; pool_get (app_main.app_pool, app); clib_memset (app, 0, sizeof (*app)); app->app_index = app - app_main.app_pool; return app; } application_t * application_get (u32 app_index) { if (app_index == APP_INVALID_INDEX) return 0; return pool_elt_at_index (app_main.app_pool, app_index); } application_t * application_get_if_valid (u32 app_index) { if (pool_is_free_index (app_main.app_pool, app_index)) return 0; return pool_elt_at_index (app_main.app_pool, app_index); } static void application_verify_cb_fns (session_cb_vft_t * cb_fns) { if (cb_fns->session_accept_callback == 0) clib_warning ("No accept callback function provided"); if (cb_fns->session_connected_callback == 0) clib_warning ("No session connected callback function provided"); if (cb_fns->session_disconnect_callback == 0) clib_warning ("No session disconnect callback function provided"); if (cb_fns->session_reset_callback == 0) clib_warning ("No session reset callback function provided"); } /** * Check app config for given segment type * * Returns 1 on success and 0 otherwise */ static u8 application_verify_cfg (ssvm_segment_type_t st) { u8 is_valid; if (st == SSVM_SEGMENT_MEMFD) { is_valid = (session_main_get_evt_q_segment () != 0); if (!is_valid) clib_warning ("memfd seg: vpp's event qs IN binary api svm region"); return is_valid; } else if (st == SSVM_SEGMENT_SHM) { is_valid = (session_main_get_evt_q_segment () == 0); if (!is_valid) clib_warning ("shm seg: vpp's event qs NOT IN binary api svm region"); return is_valid; } else return 1; } static int application_alloc_and_init (app_init_args_t * a) { ssvm_segment_type_t seg_type = SSVM_SEGMENT_MEMFD; segment_manager_props_t *props; vl_api_registration_t *reg; application_t *app; u64 *options; app = application_alloc (); options = a->options; /* * Make sure we support the requested configuration */ if (!(options[APP_OPTIONS_FLAGS] & APP_OPTIONS_FLAGS_IS_BUILTIN)) { reg = vl_api_client_index_to_registration (a->api_client_index); if (!reg) return VNET_API_ERROR_APP_UNSUPPORTED_CFG; if (vl_api_registration_file_index (reg) == VL_API_INVALID_FI) seg_type = SSVM_SEGMENT_SHM; } else { seg_type = SSVM_SEGMENT_PRIVATE; } if ((options[APP_OPTIONS_FLAGS] & APP_OPTIONS_FLAGS_EVT_MQ_USE_EVENTFD) && seg_type != SSVM_SEGMENT_MEMFD) { clib_warning ("mq eventfds can only be used if socket transport is " "used for binary api"); return VNET_API_ERROR_APP_UNSUPPORTED_CFG; } if (!application_verify_cfg (seg_type)) return VNET_API_ERROR_APP_UNSUPPORTED_CFG; /* Check that the obvious things are properly set up */ application_verify_cb_fns (a->session_cb_vft); app->flags = options[APP_OPTIONS_FLAGS]; app->cb_fns = *a->session_cb_vft; app->ns_index = options[APP_OPTIONS_NAMESPACE]; app->proxied_transports = options[APP_OPTIONS_PROXY_TRANSPORT]; app->name = vec_dup (a->name); /* If no scope enabled, default to global */ if (!application_has_global_scope (app) && !application_has_local_scope (app)) app->flags |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE; props = application_segment_manager_properties (app); segment_manager_props_init (props); props->segment_size = options[APP_OPTIONS_SEGMENT_SIZE]; props->prealloc_fifos = options[APP_OPTIONS_PREALLOC_FIFO_PAIRS]; if (options[APP_OPTIONS_ADD_SEGMENT_SIZE]) { props->add_segment_size = options[APP_OPTIONS_ADD_SEGMENT_SIZE]; props->add_segment = 1; } if (options[APP_OPTIONS_RX_FIFO_SIZE]) props->rx_fifo_size = options[APP_OPTIONS_RX_FIFO_SIZE]; if (options[APP_OPTIONS_TX_FIFO_SIZE]) props->tx_fifo_size = options[APP_OPTIONS_TX_FIFO_SIZE]; if (options[APP_OPTIONS_EVT_QUEUE_SIZE]) props->evt_q_size = options[APP_OPTIONS_EVT_QUEUE_SIZE]; if (options[APP_OPTIONS_FLAGS] & APP_OPTIONS_FLAGS_EVT_MQ_USE_EVENTFD) props->use_mq_eventfd = 1; if (options[APP_OPTIONS_TLS_ENGINE]) app->tls_engine = options[APP_OPTIONS_TLS_ENGINE]; props->segment_type = seg_type; /* Add app to lookup by api_client_index table */ if (!application_is_builtin (app)) application_api_table_add (app->app_index, a->api_client_index); else application_name_table_add (app); a->app_index = app->app_index; APP_DBG ("New app name: %v api index: %u index %u", app->name, a->api_client_index, app->app_index); return 0; } static void application_free (application_t * app) { app_worker_map_t *wrk_map; app_worker_t *app_wrk; /* * The app event queue allocated in first segment is cleared with * the segment manager. No need to explicitly free it. */ APP_DBG ("Delete app name %v index: %d", app->name, app->app_index); if (application_is_proxy (app)) application_remove_proxy (app); /* * Free workers */ /* *INDENT-OFF* */ pool_flush (wrk_map, app->worker_maps, ({ app_wrk = app_worker_get (wrk_map->wrk_index); app_worker_free (app_wrk); })); /* *INDENT-ON* */ pool_free (app->worker_maps); /* * Cleanup remaining state */ if (application_is_builtin (app)) application_name_table_del (app); vec_free (app->name); pool_put (app_main.app_pool, app); } static void application_detach_process (application_t * app, u32 api_client_index) { vnet_app_worker_add_del_args_t _args = { 0 }, *args = &_args; app_worker_map_t *wrk_map; u32 *wrks = 0, *wrk_index; app_worker_t *app_wrk; if (api_client_index == ~0) { application_free (app); return; } APP_DBG ("Detaching for app %v index %u api client index %u", app->name, app->app_index, api_client_index); /* *INDENT-OFF* */ pool_foreach (wrk_map, app->worker_maps, ({ app_wrk = app_worker_get (wrk_map->wrk_index); if (app_wrk->api_client_index == api_client_index) vec_add1 (wrks, app_wrk->wrk_index); })); /* *INDENT-ON* */ if (!vec_len (wrks)) { clib_warning ("no workers for app %u api_index %u", app->app_index, api_client_index); return; } args->app_index = app->app_index; args->api_client_index = api_client_index; vec_foreach (wrk_index, wrks) { app_wrk = app_worker_get (wrk_index[0]); args->wrk_map_index = app_wrk->wrk_map_index; args->is_add = 0; vnet_app_worker_add_del (args); } vec_free (wrks); } app_worker_t * application_get_worker (application_t * app, u32 wrk_map_index) { app_worker_map_t *map; map = app_worker_map_get (app, wrk_map_index); if (!map) return 0; return app_worker_get (map->wrk_index); } app_worker_t * application_get_default_worker (application_t * app) { return application_get_worker (app, 0); } u32 application_n_workers (application_t * app) { return pool_elts (app->worker_maps); } app_worker_t * application_listener_select_worker (session_t * ls) { application_t *app; app_listener_t *al; app = application_get (ls->app_index); al = app_listener_get (app, ls->al_index); return app_listener_select_worker (app, al); } int application_alloc_worker_and_init (application_t * app, app_worker_t ** wrk) { app_worker_map_t *wrk_map; app_worker_t *app_wrk; segment_manager_t *sm; int rv; app_wrk = app_worker_alloc (app); wrk_map = app_worker_map_alloc (app); wrk_map->wrk_index = app_wrk->wrk_index; app_wrk->wrk_map_index = app_worker_map_index (app, wrk_map); /* * Setup first segment manager */ sm = segment_manager_alloc (); sm->app_wrk_index = app_wrk->wrk_index; if ((rv = segment_manager_init (sm, app->sm_properties.segment_size, app->sm_properties.prealloc_fifos))) { app_worker_free (app_wrk); return rv; } sm->first_is_protected = 1; /* * Setup app worker */ app_wrk->first_segment_manager = segment_manager_index (sm); app_wrk->listeners_table = hash_create (0, sizeof (u64)); app_wrk->event_queue = segment_manager_event_queue (sm); app_wrk->app_is_builtin = application_is_builtin (app); *wrk = app_wrk; return 0; } int vnet_app_worker_add_del (vnet_app_worker_add_del_args_t * a) { fifo_segment_t *fs; app_worker_map_t *wrk_map; app_worker_t *app_wrk; segment_manager_t *sm; application_t *app; int rv; app = application_get (a->app_index); if (!app) return VNET_API_ERROR_INVALID_VALUE; if (a->is_add) { if ((rv = application_alloc_worker_and_init (app, &app_wrk))) return rv; /* Map worker api index to the app */ app_wrk->api_client_index = a->api_client_index; application_api_table_add (app->app_index, a->api_client_index); sm = segment_manager_get (app_wrk->first_segment_manager); fs = segment_manager_get_segment_w_lock (sm, 0); a->segment = &fs->ssvm; a->segment_handle = segment_manager_segment_handle (sm, fs); segment_manager_segment_reader_unlock (sm); a->evt_q = app_wrk->event_queue; a->wrk_map_index = app_wrk->wrk_map_index; } else { wrk_map = app_worker_map_get (app, a->wrk_map_index); if (!wrk_map) return VNET_API_ERROR_INVALID_VALUE; app_wrk = app_worker_get (wrk_map->wrk_index); if (!app_wrk) return VNET_API_ERROR_INVALID_VALUE; application_api_table_del (app_wrk->api_client_index); app_worker_free (app_wrk); app_worker_map_free (app, wrk_map); if (application_n_workers (app) == 0) application_free (app); } return 0; } static int app_validate_namespace (u8 * namespace_id, u64 secret, u32 * app_ns_index) { app_namespace_t *app_ns; if (vec_len (namespace_id) == 0) { /* Use default namespace */ *app_ns_index = 0; return 0; } *app_ns_index = app_namespace_index_from_id (namespace_id); if (*app_ns_index == APP_NAMESPACE_INVALID_INDEX) return VNET_API_ERROR_APP_INVALID_NS; app_ns = app_namespace_get (*app_ns_index); if (!app_ns) return VNET_API_ERROR_APP_INVALID_NS; if (app_ns->ns_secret != secret) return VNET_API_ERROR_APP_WRONG_NS_SECRET; return 0; } static u8 * app_name_from_api_index (u32 api_client_index) { vl_api_registration_t *regp; regp = vl_api_client_index_to_registration (api_client_index); if (regp) return format (0, "%s", regp->name); clib_warning ("api client index %u does not have an api registration!", api_client_index); return format (0, "unknown"); } /** * Attach application to vpp * * Allocates a vpp app, i.e., a structure that keeps back pointers * to external app and a segment manager for shared memory fifo based * communication with the external app. */ int vnet_application_attach (vnet_app_attach_args_t * a) { fifo_segment_t *fs; application_t *app = 0; app_worker_t *app_wrk; segment_manager_t *sm; u32 app_ns_index = 0; u8 *app_name = 0; u64 secret; int rv; if (a->api_client_index != APP_INVALID_INDEX) app = application_lookup (a->api_client_index); else if (a->name) app = application_lookup_name (a->name); else return VNET_API_ERROR_INVALID_VALUE; if (app) return VNET_API_ERROR_APP_ALREADY_ATTACHED; if (a->api_client_index != APP_INVALID_INDEX) { app_name = app_name_from_api_index (a->api_client_index); a->name = app_name; } secret = a->options[APP_OPTIONS_NAMESPACE_SECRET]; if ((rv = app_validate_namespace (a->namespace_id, secret, &app_ns_index))) return rv; a->options[APP_OPTIONS_NAMESPACE] = app_ns_index; if ((rv = application_alloc_and_init ((app_init_args_t *) a))) return rv; app = application_get (a->app_index); if ((rv = application_alloc_worker_and_init (app, &app_wrk))) return rv; a->app_evt_q = app_wrk->event_queue; app_wrk->api_client_index = a->api_client_index; sm = segment_manager_get (app_wrk->first_segment_manager); fs = segment_manager_get_segment_w_lock (sm, 0); if (application_is_proxy (app)) application_setup_proxy (app); ASSERT (vec_len (fs->ssvm.name) <= 128); a->segment = &fs->ssvm; a->segment_handle = segment_manager_segment_handle (sm, fs); segment_manager_segment_reader_unlock (sm); vec_free (app_name); return 0; } /** * Detach application from vpp */ int vnet_application_detach (vnet_app_detach_args_t * a) { application_t *app; app = application_get_if_valid (a->app_index); if (!app) { clib_warning ("app not attached"); return VNET_API_ERROR_APPLICATION_NOT_ATTACHED; } app_interface_check_thread_and_barrier (vnet_application_detach, a); application_detach_process (app, a->api_client_index); return 0; } static u8 session_endpoint_in_ns (session_endpoint_t * sep) { u8 is_lep = session_endpoint_is_local (sep); if (!is_lep && sep->sw_if_index != ENDPOINT_INVALID_INDEX && !ip_interface_has_address (sep->sw_if_index, &sep->ip, sep->is_ip4)) { clib_warning ("sw_if_index %u not configured with ip %U", sep->sw_if_index, format_ip46_address, &sep->ip, sep->is_ip4); return 0; } return (is_lep || ip_is_local (sep->fib_index, &sep->ip, sep->is_ip4)); } static void session_endpoint_update_for_app (session_endpoint_cfg_t * sep, application_t * app, u8 is_connect) { app_namespace_t *app_ns; u32 ns_index, fib_index; ns_index = app->ns_index; /* App is a transport proto, so fetch the calling app's ns */ if (app->flags & APP_OPTIONS_FLAGS_IS_TRANSPORT_APP) ns_index = sep->ns_index; app_ns = app_namespace_get (ns_index); if (!app_ns) return; /* Ask transport and network to bind to/connect using local interface * that "supports" app's namespace. This will fix our local connection * endpoint. */ /* If in default namespace and user requested a fib index use it */ if (ns_index == 0 && sep->fib_index != ENDPOINT_INVALID_INDEX) fib_index = sep->fib_index; else fib_index = sep->is_ip4 ? app_ns->ip4_fib_index : app_ns->ip6_fib_index; sep->peer.fib_index = fib_index; sep->fib_index = fib_index; if (!is_connect) { sep->sw_if_index = app_ns->sw_if_index; } else { if (app_ns->sw_if_index != APP_NAMESPACE_INVALID_INDEX && sep->peer.sw_if_index != ENDPOINT_INVALID_INDEX && sep->peer.sw_if_index != app_ns->sw_if_index) clib_warning ("Local sw_if_index different from app ns sw_if_index"); sep->peer.sw_if_index = app_ns->sw_if_index; } } int vnet_listen (vnet_listen_args_t * a) { app_listener_t *app_listener; app_worker_t *app_wrk; application_t *app; int rv; ASSERT (vlib_thread_is_main_w_barrier ()); app = application_get_if_valid (a->app_index); if (!app) return VNET_API_ERROR_APPLICATION_NOT_ATTACHED; app_wrk = application_get_worker (app, a->wrk_map_index); if (!app_wrk) return VNET_API_ERROR_INVALID_VALUE; a->sep_ext.app_wrk_index = app_wrk->wrk_index; session_endpoint_update_for_app (&a->sep_ext, app, 0 /* is_connect */ ); if (!session_endpoint_in_ns (&a->sep)) return VNET_API_ERROR_INVALID_VALUE_2; /* * Check if we already have an app listener */ app_listener = app_listener_lookup (app, &a->sep_ext); if (app_listener) { if (app_listener->app_index != app->app_index) return VNET_API_ERROR_ADDRESS_IN_USE; if (app_worker_start_listen (app_wrk, app_listener)) return -1; a->handle = app_listener_handle (app_listener); return 0; } /* * Create new app listener */ if ((rv = app_listener_alloc_and_init (app, &a->sep_ext, &app_listener))) return rv; if ((rv = app_worker_start_listen (app_wrk, app_listener))) { app_listener_cleanup (app_listener); return rv; } a->handle = app_listener_handle (app_listener); return 0; } int vnet_connect (vnet_connect_args_t * a) { app_worker_t *client_wrk; application_t *client; ASSERT (vlib_thread_is_main_w_barrier ()); if (session_endpoint_is_zero (&a->sep)) return VNET_API_ERROR_INVALID_VALUE; client = application_get (a->app_index); session_endpoint_update_for_app (&a->sep_ext, client, 1 /* is_connect */ ); client_wrk = application_get_worker (client, a->wrk_map_index); /* * First check the local scope for locally attached destinations. * If we have local scope, we pass *all* connects through it since we may * have special policy rules even for non-local destinations, think proxy. */ if (application_has_local_scope (client)) { int rv; a->sep_ext.original_tp = a->sep_ext.transport_proto; a->sep_ext.transport_proto = TRANSPORT_PROTO_NONE; rv = app_worker_connect_session (client_wrk, &a->sep, a->api_context); if (rv <= 0) return rv; } /* * Not connecting to a local server, propagate to transport */ if (app_worker_connect_session (client_wrk, &a->sep, a->api_context)) return VNET_API_ERROR_SESSION_CONNECT; return 0; } int vnet_unlisten (vnet_unlisten_args_t * a) { app_worker_t *app_wrk; app_listener_t *al; application_t *app; ASSERT (vlib_thread_is_main_w_barrier ()); if (!(app = application_get_if_valid (a->app_index))) return VNET_API_ERROR_APPLICATION_NOT_ATTACHED; if (!(al = app_listener_get_w_handle (a->handle))) return -1; if (al->app_index != app->app_index) { clib_warning ("app doesn't own handle %llu!", a->handle); return -1; } app_wrk = application_get_worker (app, a->wrk_map_index); if (!app_wrk) { clib_warning ("no app %u worker %u", app->app_index, a->wrk_map_index); return -1; } return app_worker_stop_listen (app_wrk, al); } int vnet_disconnect_session (vnet_disconnect_args_t * a) { app_worker_t *app_wrk; session_t *s; s = session_get_from_handle_if_valid (a->handle); if (!s) return VNET_API_ERROR_INVALID_VALUE; app_wrk = app_worker_get (s->app_wrk_index); if (app_wrk->app_index != a->app_index) return VNET_API_ERROR_INVALID_VALUE; /* We're peeking into another's thread pool. Make sure */ ASSERT (s->session_index == session_index_from_handle (a->handle)); session_close (s); return 0; } int application_change_listener_owner (session_t * s, app_worker_t * app_wrk) { app_worker_t *old_wrk = app_worker_get (s->app_wrk_index); app_listener_t *app_listener; application_t *app; if (!old_wrk) return -1; hash_unset (old_wrk->listeners_table, listen_session_get_handle (s)); if (session_transport_service_type (s) == TRANSPORT_SERVICE_CL && s->rx_fifo) segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo); app = application_get (old_wrk->app_index); if (!app) return -1; app_listener = app_listener_get (app, s->al_index); /* Only remove from lb for now */ app_listener->workers = clib_bitmap_set (app_listener->workers, old_wrk->wrk_map_index, 0); if (app_worker_start_listen (app_wrk, app_listener)) return -1; s->app_wrk_index = app_wrk->wrk_index; return 0; } int application_is_proxy (application_t * app) { return (app->flags & APP_OPTIONS_FLAGS_IS_PROXY); } int application_is_builtin (application_t * app) { return (app->flags & APP_OPTIONS_FLAGS_IS_BUILTIN); } int application_is_builtin_proxy (application_t * app) { return (application_is_proxy (app) && application_is_builtin (app)); } u8 application_has_local_scope (application_t * app) { return app->flags & APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE; } u8 application_has_global_scope (application_t * app) { return app->flags & APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE; } static clib_error_t * application_start_stop_proxy_fib_proto (application_t * app, u8 fib_proto, u8 transport_proto, u8 is_start) { app_namespace_t *app_ns = app_namespace_get (app->ns_index); u8 is_ip4 = (fib_proto == FIB_PROTOCOL_IP4); session_endpoint_cfg_t sep = SESSION_ENDPOINT_CFG_NULL; transport_connection_t *tc; app_worker_t *app_wrk; app_listener_t *al; session_t *s; u32 flags; /* TODO decide if we want proxy to be enabled for all workers */ app_wrk = application_get_default_worker (app); if (is_start) { s = app_worker_first_listener (app_wrk, fib_proto, transport_proto); if (!s) { sep.is_ip4 = is_ip4; sep.fib_index = app_namespace_get_fib_index (app_ns, fib_proto); sep.sw_if_index = app_ns->sw_if_index; sep.transport_proto = transport_proto; sep.app_wrk_index = app_wrk->wrk_index; /* only default */ /* force global scope listener */ flags = app->flags; app->flags &= ~APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE; app_listener_alloc_and_init (app, &sep, &al); app->flags = flags; app_worker_start_listen (app_wrk, al); s = listen_session_get (al->session_index); s->flags |= SESSION_F_PROXY; } } else { s = app_worker_proxy_listener (app_wrk, fib_proto, transport_proto); ASSERT (s); } tc = listen_session_get_transport (s); if (!ip_is_zero (&tc->lcl_ip, 1)) { u32 sti; sep.is_ip4 = is_ip4; sep.fib_index = app_namespace_get_fib_index (app_ns, fib_proto); sep.transport_proto = transport_proto; sep.port = 0; sti = session_lookup_get_index_for_fib (fib_proto, sep.fib_index); if (is_start) session_lookup_add_session_endpoint (sti, (session_endpoint_t *) & sep, s->session_index); else session_lookup_del_session_endpoint (sti, (session_endpoint_t *) & sep); } return 0; } static void application_start_stop_proxy_local_scope (application_t * app, u8 transport_proto, u8 is_start) { session_endpoint_t sep = SESSION_ENDPOINT_NULL; app_namespace_t *app_ns; app_ns = app_namespace_get (app->ns_index); sep.is_ip4 = 1; sep.transport_proto = transport_proto; sep.port = 0; if (is_start) { session_lookup_add_session_endpoint (app_ns->local_table_index, &sep, app->app_index); sep.is_ip4 = 0; session_lookup_add_session_endpoint (app_ns->local_table_index, &sep, app->app_index); } else { session_lookup_del_session_endpoint (app_ns->local_table_index, &sep); sep.is_ip4 = 0; session_lookup_del_session_endpoint (app_ns->local_table_index, &sep); } } void application_start_stop_proxy (application_t * app, transport_proto_t transport_proto, u8 is_start) { if (application_has_local_scope (app)) application_start_stop_proxy_local_scope (app, transport_proto, is_start); if (application_has_global_scope (app)) { application_start_stop_proxy_fib_proto (app, FIB_PROTOCOL_IP4, transport_proto, is_start); application_start_stop_proxy_fib_proto (app, FIB_PROTOCOL_IP6, transport_proto, is_start); } } void application_setup_proxy (application_t * app) { u16 transports = app->proxied_transports; transport_proto_t tp; ASSERT (application_is_proxy (app)); /* *INDENT-OFF* */ transport_proto_foreach (tp, ({ if (transports & (1 << tp)) application_start_stop_proxy (app, tp, 1); })); /* *INDENT-ON* */ } void application_remove_proxy (application_t * app) { u16 transports = app->proxied_transports; transport_proto_t tp; ASSERT (application_is_proxy (app)); /* *INDENT-OFF* */ transport_proto_foreach (tp, ({ if (transports & (1 << tp)) application_start_stop_proxy (app, tp, 0); })); /* *INDENT-ON* */ } segment_manager_props_t * application_segment_manager_properties (application_t * app) { return &app->sm_properties; } segment_manager_props_t * application_get_segment_manager_properties (u32 app_index) { application_t *app = application_get (app_index); return &app->sm_properties; } clib_error_t * vnet_app_add_tls_cert (vnet_app_add_tls_cert_args_t * a) { /* Deprected, will be remove after 20.01 */ app_cert_key_pair_t *ckpair; ckpair = app_cert_key_pair_get_default (); ckpair->cert = vec_dup (a->cert); return 0; } clib_error_t * vnet_app_add_tls_key (vnet_app_add_tls_key_args_t * a) { /* Deprected, will be remove after 20.01 */ app_cert_key_pair_t *ckpair; ckpair = app_cert_key_pair_get_default (); ckpair->key = vec_dup (a->key); return 0; } static void application_format_listeners (application_t * app, int verbose) { vlib_main_t *vm = vlib_get_main (); app_worker_map_t *wrk_map; app_worker_t *app_wrk; u32 sm_index; u64 handle; if (!app) { vlib_cli_output (vm, "%U", format_app_worker_listener, 0 /* header */ , 0, 0, verbose); return; } /* *INDENT-OFF* */ pool_foreach (wrk_map, app->worker_maps, ({ app_wrk = app_worker_get (wrk_map->wrk_index); if (hash_elts (app_wrk->listeners_table) == 0) continue; hash_foreach (handle, sm_index, app_wrk->listeners_table, ({ vlib_cli_output (vm, "%U", format_app_worker_listener, app_wrk, handle, sm_index, verbose); })); })); /* *INDENT-ON* */ } static void application_format_connects (application_t * app, int verbose) { app_worker_map_t *wrk_map; app_worker_t *app_wrk; if (!app) { app_worker_format_connects (0, verbose); return; } /* *INDENT-OFF* */ pool_foreach (wrk_map, app->worker_maps, ({ app_wrk = app_worker_get (wrk_map->wrk_index); app_worker_format_connects (app_wrk, verbose); })); /* *INDENT-ON* */ } u8 * format_cert_key_pair (u8 * s, va_list * args) { app_cert_key_pair_t *ckpair = va_arg (*args, app_cert_key_pair_t *); int key_len = 0, cert_len = 0; cert_len = vec_len (ckpair->cert); key_len = vec_len (ckpair->key); if (ckpair->cert_key_index == 0) s = format (s, "DEFAULT (cert:%d, key:%d)", cert_len, key_len); else s = format (s, "%d (cert:%d, key:%d)", ckpair->cert_key_index, cert_len, key_len); return s; } u8 * format_crypto_engine (u8 * s, va_list * args) { u32 engine = va_arg (*args, u32); switch (engine) { case CRYPTO_ENGINE_NONE: return format (s, "none"); case CRYPTO_ENGINE_MBEDTLS: return format (s, "mbedtls"); case CRYPTO_ENGINE_OPENSSL: return format (s, "openssl"); case CRYPTO_ENGINE_PICOTLS: return format (s, "picotls"); case CRYPTO_ENGINE_VPP: return format (s, "vpp"); default: return format (s, "unknown engine"); } return s; } uword unformat_crypto_engine (unformat_input_t * input, va_list * args) { u8 *a = va_arg (*args, u8 *); if (unformat (input, "mbedtls")) *a = CRYPTO_ENGINE_MBEDTLS; else if (unformat (input, "openssl")) *a = CRYPTO_ENGINE_OPENSSL; else if (unformat (input, "picotls")) *a = CRYPTO_ENGINE_PICOTLS; else if (unformat (input, "vpp")) *a = CRYPTO_ENGINE_VPP; else return 0; return 1; } u8 * format_crypto_context (u8 * s, va_list * args) { crypto_context_t *crctx = va_arg (*args, crypto_context_t *); s = format (s, "[0x%x][sub%d,ckpair%x]", crctx->ctx_index, crctx->n_subscribers, crctx->ckpair_index); s = format (s, "[%U]", format_crypto_engine, crctx->crypto_engine); return s; } u8 * format_application (u8 * s, va_list * args) { application_t *app = va_arg (*args, application_t *); CLIB_UNUSED (int verbose) = va_arg (*args, int); segment_manager_props_t *props; const u8 *app_ns_name, *app_name; app_worker_map_t *wrk_map; app_worker_t *app_wrk; if (app == 0) { if (!verbose) s = format (s, "%-10s%-20s%-40s", "Index", "Name", "Namespace"); return s; } app_name = app_get_name (app); app_ns_name = app_namespace_id_from_index (app->ns_index); props = application_segment_manager_properties (app); if (!verbose) { s = format (s, "%-10u%-20v%-40s", app->app_index, app_name, app_ns_name); return s; } s = format (s, "app-name %v app-index %u ns-index %u seg-size %U\n", app_name, app->app_index, app->ns_index, format_memory_size, props->add_segment_size); s = format (s, "rx-fifo-size %U tx-fifo-size %U workers:\n", format_memory_size, props->rx_fifo_size, format_memory_size, props->tx_fifo_size); /* *INDENT-OFF* */ pool_foreach (wrk_map, app->worker_maps, ({ app_wrk = app_worker_get (wrk_map->wrk_index); s = format (s, "%U", format_app_worker, app_wrk); })); /* *INDENT-ON* */ return s; } void application_format_all_listeners (vlib_main_t * vm, int verbose) { application_t *app; if (!pool_elts (app_main.app_pool)) { vlib_cli_output (vm, "No active server bindings"); return; } application_format_listeners (0, verbose); /* *INDENT-OFF* */ pool_foreach (app, app_main.app_pool, ({ application_format_listeners (app, verbose); })); /* *INDENT-ON* */ } void application_format_all_clients (vlib_main_t * vm, int verbose) { application_t *app; if (!pool_elts (app_main.app_pool)) { vlib_cli_output (vm, "No active apps"); return; } application_format_connects (0, verbose); /* *INDENT-OFF* */ pool_foreach (app, app_main.app_pool, ({ application_format_connects (app, verbose); })); /* *INDENT-ON* */ } static clib_error_t * show_certificate_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { app_cert_key_pair_t *ckpair; session_cli_return_if_not_enabled (); /* *INDENT-OFF* */ pool_foreach (ckpair, app_main.cert_key_pair_store, ({ vlib_cli_output (vm, "%U", format_cert_key_pair, ckpair); })); /* *INDENT-ON* */ return 0; } static inline void appliction_format_app_mq (vlib_main_t * vm, application_t * app) { app_worker_map_t *map; app_worker_t *wrk; /* *INDENT-OFF* */ pool_foreach (map, app->worker_maps, ({ wrk = app_worker_get (map->wrk_index); vlib_cli_output (vm, "[A%d][%d]%U", app->app_index, map->wrk_index, format_svm_msg_q, wrk->event_queue); })); /* *INDENT-ON* */ } static clib_error_t * appliction_format_all_app_mq (vlib_main_t * vm) { application_t *app; int i, n_threads; n_threads = vec_len (vlib_mains); for (i = 0; i < n_threads; i++) { vlib_cli_output (vm, "[Ctrl%d]%U", i, format_svm_msg_q, session_main_get_vpp_event_queue (i)); } /* *INDENT-OFF* */ pool_foreach (app, app_main.app_pool, ({ appliction_format_app_mq (vm, app); })); /* *INDENT-ON* */ return 0; } static clib_error_t * show_app_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { int do_server = 0, do_client = 0, do_mq = 0; application_t *app; u32 app_index = ~0; int verbose = 0; session_cli_return_if_not_enabled (); while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "server")) do_server = 1; else if (unformat (input, "client")) do_client = 1; else if (unformat (input, "mq")) do_mq = 1; else if (unformat (input, "%u", &app_index)) ; else if (unformat (input, "verbose")) verbose = 1; else return clib_error_return (0, "unknown input `%U'", format_unformat_error, input); } if (do_mq && app_index != ~0) { app = application_get_if_valid (app_index); if (!app) return clib_error_return (0, "No app with index %u", app_index); appliction_format_app_mq (vm, app); return 0; } if (do_mq) { appliction_format_all_app_mq (vm); return 0; } if (do_server) { application_format_all_listeners (vm, verbose); return 0; } if (do_client) { application_format_all_clients (vm, verbose); return 0; } if (app_index != ~0) { app = application_get_if_valid (app_index); if (!app) return clib_error_return (0, "No app with index %u", app_index); vlib_cli_output (vm, "%U", format_application, app, /* verbose */ 1); return 0; } /* Print app related info */ if (!do_server && !do_client) { vlib_cli_output (vm, "%U", format_application, 0, 0); /* *INDENT-OFF* */ pool_foreach (app, app_main.app_pool, ({ vlib_cli_output (vm, "%U", format_application, app, 0); })); /* *INDENT-ON* */ } return 0; } /* Certificate store */ static app_cert_key_pair_t * app_cert_key_pair_alloc () { app_cert_key_pair_t *ckpair; pool_get (app_main.cert_key_pair_store, ckpair); clib_memset (ckpair, 0, sizeof (*ckpair)); ckpair->cert_key_index = ckpair - app_main.cert_key_pair_store; return ckpair; } app_cert_key_pair_t * app_cert_key_pair_get_if_valid (u32 index) { if (pool_is_free_index (app_main.cert_key_pair_store, index)) return 0; return app_cert_key_pair_get (index); } app_cert_key_pair_t * app_cert_key_pair_get (u32 index) { return pool_elt_at_index (app_main.cert_key_pair_store, index); } app_cert_key_pair_t * app_cert_key_pair_get_default () { /* To maintain legacy bapi */ return app_cert_key_pair_get (0); } int vnet_app_add_cert_key_pair (vnet_app_add_cert_key_pair_args_t * a) { app_cert_key_pair_t *ckpair = app_cert_key_pair_alloc (); ckpair->cert = vec_dup (a->cert); ckpair->key = vec_dup (a->key); a->index = ckpair->cert_key_index; return 0; } int vnet_app_add_cert_key_interest (u32 index, u32 app_index) { app_cert_key_pair_t *ckpair; if (!(ckpair = app_cert_key_pair_get_if_valid (index))) return -1; if (vec_search (ckpair->app_interests, app_index) != ~0) vec_add1 (ckpair->app_interests, app_index); return 0; } int vnet_app_del_cert_key_pair (u32 index) { app_cert_key_pair_t *ckpair; application_t *app; u32 *app_index; if (!(ckpair = app_cert_key_pair_get_if_valid (index))) return (VNET_API_ERROR_INVALID_VALUE); vec_foreach (app_index, ckpair->app_interests) { if ((app = application_get_if_valid (*app_index)) && app->cb_fns.app_cert_key_pair_delete_callback) app->cb_fns.app_cert_key_pair_delete_callback (ckpair); } vec_free (ckpair->cert); vec_free (ckpair->key); pool_put (app_main.cert_key_pair_store, ckpair); return 0; } clib_error_t * application_init (vlib_main_t * vm) { /* Add a certificate with index 0 to support legacy apis */ (void) app_cert_key_pair_alloc (); app_main.last_crypto_engine = CRYPTO_ENGINE_LAST; return 0; } /* *INDENT-OFF* */ VLIB_INIT_FUNCTION (application_init); VLIB_CLI_COMMAND (show_app_command, static) = { .path = "show app", .short_help = "show app [app_id] [server|client] [mq] [verbose]", .function = show_app_command_fn, }; VLIB_CLI_COMMAND (show_certificate_command, static) = { .path = "show app certificate", .short_help = "list app certs and keys present in store", .function = show_certificate_command_fn, }; /* *INDENT-ON* */ crypto_engine_type_t app_crypto_engine_type_add (void) { return (++app_main.last_crypto_engine); } u8 app_crypto_engine_n_types (void) { return (app_main.last_crypto_engine + 1); } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */