-static inline int
-app_send_io_evt_rx (app_worker_t * app_wrk, stream_session_t * s, u8 lock)
-{
- session_event_t *evt;
- svm_msg_q_msg_t msg;
- svm_msg_q_t *mq;
-
- if (PREDICT_FALSE (s->session_state != SESSION_STATE_READY
- && s->session_state != SESSION_STATE_LISTENING))
- {
- /* Session is closed so app will never clean up. Flush rx fifo */
- if (s->session_state == SESSION_STATE_CLOSED)
- svm_fifo_dequeue_drop_all (s->server_rx_fifo);
- return 0;
- }
-
- if (app_worker_application_is_builtin (app_wrk))
- {
- application_t *app = application_get (app_wrk->app_index);
- return app->cb_fns.builtin_app_rx_callback (s);
- }
-
- if (svm_fifo_has_event (s->server_rx_fifo)
- || svm_fifo_is_empty (s->server_rx_fifo))
- return 0;
-
- mq = app_wrk->event_queue;
- if (lock)
- svm_msg_q_lock (mq);
-
- if (PREDICT_FALSE (svm_msg_q_ring_is_full (mq, SESSION_MQ_IO_EVT_RING)))
- {
- clib_warning ("evt q rings full");
- if (lock)
- svm_msg_q_unlock (mq);
- return -1;
- }
-
- msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING);
- ASSERT (!svm_msg_q_msg_is_invalid (&msg));
-
- evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
- evt->fifo = s->server_rx_fifo;
- evt->event_type = FIFO_EVENT_APP_RX;
-
- if (app_enqueue_evt (mq, &msg, lock))
- return -1;
- (void) svm_fifo_set_event (s->server_rx_fifo);
- return 0;
-}
-
-static inline int
-app_send_io_evt_tx (app_worker_t * app_wrk, stream_session_t * s, u8 lock)
-{
- svm_msg_q_t *mq;
- session_event_t *evt;
- svm_msg_q_msg_t msg;
-
- if (app_worker_application_is_builtin (app_wrk))
- return 0;
-
- mq = app_wrk->event_queue;
- if (lock)
- svm_msg_q_lock (mq);
-
- if (PREDICT_FALSE (svm_msg_q_ring_is_full (mq, SESSION_MQ_IO_EVT_RING)))
- {
- clib_warning ("evt q rings full");
- if (lock)
- svm_msg_q_unlock (mq);
- return -1;
- }
-
- msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING);
- ASSERT (!svm_msg_q_msg_is_invalid (&msg));
-
- evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
- evt->event_type = FIFO_EVENT_APP_TX;
- evt->fifo = s->server_tx_fifo;
-
- return app_enqueue_evt (mq, &msg, lock);
-}
-
-/* *INDENT-OFF* */
-typedef int (app_send_evt_handler_fn) (app_worker_t *app,
- stream_session_t *s,
- u8 lock);
-static app_send_evt_handler_fn * const app_send_evt_handler_fns[3] = {
- app_send_io_evt_rx,
- 0,
- app_send_io_evt_tx,
-};
-/* *INDENT-ON* */
-
-/**
- * Send event to application
- *
- * Logic from queue perspective is non-blocking. That is, if there's
- * not enough space to enqueue a message, we return. However, if the lock
- * flag is set, we do wait for queue mutex.
- */
-int
-app_worker_send_event (app_worker_t * app, stream_session_t * s, u8 evt_type)
-{
- ASSERT (app && evt_type <= FIFO_EVENT_APP_TX);
- return app_send_evt_handler_fns[evt_type] (app, s, 0 /* lock */ );
-}
-
-int
-app_worker_lock_and_send_event (app_worker_t * app, stream_session_t * s,
- u8 evt_type)
-{
- return app_send_evt_handler_fns[evt_type] (app, s, 1 /* lock */ );
-}
-
-local_session_t *
-application_local_session_alloc (app_worker_t * app_wrk)
-{
- local_session_t *s;
- pool_get (app_wrk->local_sessions, s);
- memset (s, 0, sizeof (*s));
- s->app_wrk_index = app_wrk->wrk_index;
- s->session_index = s - app_wrk->local_sessions;
- s->session_type = session_type_from_proto_and_ip (TRANSPORT_PROTO_NONE, 0);
- return s;
-}
-
-void
-application_local_session_free (app_worker_t * app, local_session_t * s)
-{
- pool_put (app->local_sessions, s);
- if (CLIB_DEBUG)
- memset (s, 0xfc, sizeof (*s));
-}
-
-local_session_t *
-application_get_local_session (app_worker_t * app_wrk, u32 session_index)
-{
- if (pool_is_free_index (app_wrk->local_sessions, session_index))
- return 0;
- return pool_elt_at_index (app_wrk->local_sessions, session_index);
-}
-
-local_session_t *
-application_get_local_session_from_handle (session_handle_t handle)
-{
- app_worker_t *server_wrk;
- u32 session_index, server_wrk_index;
- local_session_parse_handle (handle, &server_wrk_index, &session_index);
- server_wrk = app_worker_get_if_valid (server_wrk_index);
- if (!server_wrk)
- return 0;
- return application_get_local_session (server_wrk, session_index);
-}
-
-local_session_t *
-application_local_listen_session_alloc (application_t * app)
-{
- local_session_t *ll;
- pool_get (app->local_listen_sessions, ll);
- memset (ll, 0, sizeof (*ll));
- return ll;
-}
-
-u32
-application_local_listener_index (application_t * app, local_session_t * ll)
-{
- return (ll - app->local_listen_sessions);
-}
-
-void
-application_local_listen_session_free (application_t * app,
- local_session_t * ll)
-{
- pool_put (app->local_listen_sessions, ll);
- if (CLIB_DEBUG)
- memset (ll, 0xfb, sizeof (*ll));
-}
-
-int
-application_start_local_listen (application_t * app,
- session_endpoint_extended_t * sep_ext,
- session_handle_t * handle)
-{
- app_listener_t *app_listener;
- session_endpoint_t *sep;
- app_worker_t *app_wrk;
- session_handle_t lh;
- local_session_t *ll;
- u32 table_index;
-
- sep = (session_endpoint_t *) sep_ext;
- table_index = application_local_session_table (app);
- app_wrk = app_worker_get (sep_ext->app_wrk_index);
-
- /* An exact sep match, as opposed to session_lookup_local_listener */
- lh = session_lookup_endpoint_listener (table_index, sep, 1);
- if (lh != SESSION_INVALID_HANDLE)
- {
- ll = application_get_local_listener_w_handle (lh);
- if (ll->app_index != app->app_index)
- return VNET_API_ERROR_ADDRESS_IN_USE;
-
- if (ll->app_wrk_index == app_wrk->wrk_index)
- return VNET_API_ERROR_ADDRESS_IN_USE;
-
- app_listener = app_local_listener_get (app, ll->listener_db_index);
- app_listener->workers = clib_bitmap_set (app_listener->workers,
- app_wrk->wrk_map_index, 1);
- *handle = application_local_session_handle (ll);
- return 0;
- }
-
- ll = application_local_listen_session_alloc (app);
- ll->session_type = session_type_from_proto_and_ip (TRANSPORT_PROTO_NONE, 0);
- ll->app_wrk_index = app_wrk->app_index;
- ll->session_index = application_local_listener_index (app, ll);
- ll->port = sep_ext->port;
- /* Store the original session type for the unbind */
- ll->listener_session_type =
- session_type_from_proto_and_ip (sep_ext->transport_proto,
- sep_ext->is_ip4);
- ll->transport_listener_index = ~0;
- ll->app_index = app->app_index;
-
- app_listener = app_local_listener_alloc (app);
- ll->listener_db_index = app_listener->al_index;
- app_listener->workers = clib_bitmap_set (app_listener->workers,
- app_wrk->wrk_map_index, 1);
-
- *handle = application_local_session_handle (ll);
- session_lookup_add_session_endpoint (table_index, sep, *handle);
-
- return 0;
-}
-
-/**
- * Clean up local session table. If we have a listener session use it to
- * find the port and proto. If not, the handle must be a local table handle
- * so parse it.
- */
-int
-application_stop_local_listen (u32 app_index, u32 wrk_map_index,
- session_handle_t lh)
-{
- session_endpoint_t sep = SESSION_ENDPOINT_NULL;
- u32 table_index, ll_index, server_index;
- app_listener_t *app_listener;
- app_worker_t *server_wrk;
- stream_session_t *sl = 0;
- local_session_t *ll, *ls;
- application_t *server;
-
- server = application_get (app_index);
- table_index = application_local_session_table (server);
-
- /* We have both local and global table binds. Figure from global what
- * the sep we should be cleaning up is.
- */
- if (!session_handle_is_local (lh))
- {
- sl = listen_session_get_from_handle (lh);
- if (!sl || listen_session_get_local_session_endpoint (sl, &sep))
- {
- clib_warning ("broken listener");
- return -1;
- }
- lh = session_lookup_endpoint_listener (table_index, &sep, 0);
- if (lh == SESSION_INVALID_HANDLE)
- return -1;
- }
-
- local_session_parse_handle (lh, &server_index, &ll_index);
- if (PREDICT_FALSE (server_index != app_index))
- {
- clib_warning ("app %u does not own local handle 0x%lx", app_index, lh);
- return -1;
- }
-
- ll = application_get_local_listen_session (server, ll_index);
- if (PREDICT_FALSE (!ll))
- {
- clib_warning ("no local listener");
- return -1;
- }
-
- app_listener = app_local_listener_get (server, ll->listener_db_index);
- if (!clib_bitmap_get (app_listener->workers, wrk_map_index))
- {
- clib_warning ("app wrk %u not listening on handle %lu", wrk_map_index,
- lh);
- return -1;
- }
-
- server_wrk = application_get_worker (server, wrk_map_index);
- /* *INDENT-OFF* */
- pool_foreach (ls, server_wrk->local_sessions, ({
- if (ls->listener_index == ll->session_index)
- application_local_session_disconnect (server_wrk->app_index, ls);
- }));
- /* *INDENT-ON* */
-
- clib_bitmap_set_no_check (app_listener->workers, wrk_map_index, 0);
- if (clib_bitmap_is_zero (app_listener->workers))
- {
- app_local_listener_free (server, app_listener);
- application_local_listener_session_endpoint (ll, &sep);
- session_lookup_del_session_endpoint (table_index, &sep);
- application_local_listen_session_free (server, ll);
- }
-
- return 0;
-}
-
-static void
-application_local_session_fix_eventds (svm_msg_q_t * sq, svm_msg_q_t * cq)
-{
- int fd;
-
- /*
- * segment manager initializes only the producer eventds, since vpp is
- * typically the producer. But for local sessions, we also pass to the
- * apps the mqs they listen on for events from peer apps, so they are also
- * consumer fds.
- */
- fd = svm_msg_q_get_producer_eventfd (sq);
- svm_msg_q_set_consumer_eventfd (sq, fd);
- fd = svm_msg_q_get_producer_eventfd (cq);
- svm_msg_q_set_consumer_eventfd (cq, fd);
-}
-
-int
-application_local_session_connect (app_worker_t * client_wrk,
- app_worker_t * server_wrk,
- local_session_t * ll, u32 opaque)
-{
- u32 seg_size, evt_q_sz, evt_q_elts, margin = 16 << 10;
- segment_manager_properties_t *props, *cprops;
- u32 round_rx_fifo_sz, round_tx_fifo_sz;
- int rv, has_transport, seg_index;
- svm_fifo_segment_private_t *seg;
- application_t *server, *client;
- segment_manager_t *sm;
- local_session_t *ls;
- svm_msg_q_t *sq, *cq;
-
- ls = application_local_session_alloc (server_wrk);
- server = application_get (server_wrk->app_index);
- client = application_get (client_wrk->app_index);
-
- props = application_segment_manager_properties (server);
- cprops = application_segment_manager_properties (client);
- evt_q_elts = props->evt_q_size + cprops->evt_q_size;
- evt_q_sz = segment_manager_evt_q_expected_size (evt_q_elts);
- round_rx_fifo_sz = 1 << max_log2 (props->rx_fifo_size);
- round_tx_fifo_sz = 1 << max_log2 (props->tx_fifo_size);
- seg_size = round_rx_fifo_sz + round_tx_fifo_sz + evt_q_sz + margin;
-
- has_transport = session_has_transport ((stream_session_t *) ll);
- if (!has_transport)
- {
- /* Local sessions don't have backing transport */
- ls->port = ll->port;
- sm = application_get_local_segment_manager (server_wrk);
- }
- else
- {
- stream_session_t *sl = (stream_session_t *) ll;
- transport_connection_t *tc;
- tc = listen_session_get_transport (sl);
- ls->port = tc->lcl_port;
- sm = app_worker_get_listen_segment_manager (server_wrk, sl);
- }
-
- seg_index = segment_manager_add_segment (sm, seg_size);
- if (seg_index < 0)
- {
- clib_warning ("failed to add new cut-through segment");
- return seg_index;
- }
- seg = segment_manager_get_segment_w_lock (sm, seg_index);
- sq = segment_manager_alloc_queue (seg, props);
- cq = segment_manager_alloc_queue (seg, cprops);
-
- if (props->use_mq_eventfd)
- application_local_session_fix_eventds (sq, cq);
-
- ls->server_evt_q = pointer_to_uword (sq);
- ls->client_evt_q = pointer_to_uword (cq);
- rv = segment_manager_try_alloc_fifos (seg, props->rx_fifo_size,
- props->tx_fifo_size,
- &ls->server_rx_fifo,
- &ls->server_tx_fifo);
- if (rv)
- {
- clib_warning ("failed to add fifos in cut-through segment");
- segment_manager_segment_reader_unlock (sm);
- goto failed;
- }
- ls->server_rx_fifo->master_session_index = ls->session_index;
- ls->server_tx_fifo->master_session_index = ls->session_index;
- ls->server_rx_fifo->master_thread_index = ~0;
- ls->server_tx_fifo->master_thread_index = ~0;
- ls->svm_segment_index = seg_index;
- ls->listener_index = ll->session_index;
- ls->client_wrk_index = client_wrk->wrk_index;
- ls->client_opaque = opaque;
- ls->listener_session_type = ll->session_type;
- ls->session_state = SESSION_STATE_READY;
-
- if ((rv = server->cb_fns.add_segment_callback (server->api_client_index,
- &seg->ssvm)))
- {
- clib_warning ("failed to notify server of new segment");
- segment_manager_segment_reader_unlock (sm);
- goto failed;
- }
- segment_manager_segment_reader_unlock (sm);
- if ((rv = server->cb_fns.session_accept_callback ((stream_session_t *) ls)))
- {
- clib_warning ("failed to send accept cut-through notify to server");
- goto failed;
- }
- if (server->flags & APP_OPTIONS_FLAGS_IS_BUILTIN)
- application_local_session_connect_notify (ls);
-
- return 0;
-
-failed:
- if (!has_transport)
- segment_manager_del_segment (sm, seg);
- return rv;
-}
-
-static uword
-application_client_local_connect_key (local_session_t * ls)
-{
- return ((uword) ls->app_wrk_index << 32 | (uword) ls->session_index);
-}
-
-static void
-application_client_local_connect_key_parse (uword key, u32 * app_wrk_index,
- u32 * session_index)
-{
- *app_wrk_index = key >> 32;
- *session_index = key & 0xFFFFFFFF;
-}
-
-int
-application_local_session_connect_notify (local_session_t * ls)
-{
- svm_fifo_segment_private_t *seg;
- app_worker_t *client_wrk, *server_wrk;
- segment_manager_t *sm;
- application_t *client;
- int rv, is_fail = 0;
- uword client_key;
-
- client_wrk = app_worker_get (ls->client_wrk_index);
- server_wrk = app_worker_get (ls->app_wrk_index);
- client = application_get (client_wrk->app_index);
-
- sm = application_get_local_segment_manager_w_session (server_wrk, ls);
- seg = segment_manager_get_segment_w_lock (sm, ls->svm_segment_index);
- if ((rv = client->cb_fns.add_segment_callback (client->api_client_index,
- &seg->ssvm)))
- {
- clib_warning ("failed to notify client %u of new segment",
- ls->client_wrk_index);
- segment_manager_segment_reader_unlock (sm);
- application_local_session_disconnect (ls->client_wrk_index, ls);
- is_fail = 1;
- }
- else
- {
- segment_manager_segment_reader_unlock (sm);
- }
-
- client->cb_fns.session_connected_callback (client_wrk->wrk_index,
- ls->client_opaque,
- (stream_session_t *) ls,
- is_fail);
-
- client_key = application_client_local_connect_key (ls);
- hash_set (client_wrk->local_connects, client_key, client_key);
- return 0;
-}
-
-int
-application_local_session_cleanup (app_worker_t * client_wrk,
- app_worker_t * server_wrk,
- local_session_t * ls)
-{
- svm_fifo_segment_private_t *seg;
- segment_manager_t *sm;
- uword client_key;
- u8 has_transport;
-
- has_transport = session_has_transport ((stream_session_t *) ls);
- client_key = application_client_local_connect_key (ls);
- if (!has_transport)
- sm = application_get_local_segment_manager_w_session (server_wrk, ls);
- else
- sm = app_worker_get_listen_segment_manager (server_wrk,
- (stream_session_t *) ls);
-
- seg = segment_manager_get_segment (sm, ls->svm_segment_index);
- if (client_wrk)
- hash_unset (client_wrk->local_connects, client_key);
-
- if (!has_transport)
- {
- application_t *server = application_get (server_wrk->app_index);
- server->cb_fns.del_segment_callback (server->api_client_index,
- &seg->ssvm);
- if (client_wrk)
- {
- application_t *client = application_get (client_wrk->app_index);
- client->cb_fns.del_segment_callback (client->api_client_index,
- &seg->ssvm);
- }
- segment_manager_del_segment (sm, seg);
- }
-
- application_local_session_free (server_wrk, ls);
-
- return 0;
-}
-
-int
-application_local_session_disconnect (u32 app_index, local_session_t * ls)
-{
- app_worker_t *client_wrk, *server_wrk;
- u8 is_server = 0, is_client = 0;
- application_t *app;
-
- app = application_get_if_valid (app_index);
- if (!app)
- return 0;
-
- client_wrk = app_worker_get_if_valid (ls->client_wrk_index);
- server_wrk = app_worker_get (ls->app_wrk_index);
-
- if (server_wrk->app_index == app_index)
- is_server = 1;
- else if (client_wrk && client_wrk->app_index == app_index)
- is_client = 1;
-
- if (!is_server && !is_client)
- {
- clib_warning ("app %u is neither client nor server for session 0x%lx",
- app_index, application_local_session_handle (ls));
- return VNET_API_ERROR_INVALID_VALUE;
- }
-
- if (ls->session_state == SESSION_STATE_CLOSED)
- return application_local_session_cleanup (client_wrk, server_wrk, ls);
-
- if (app_index == ls->client_wrk_index)
- {
- mq_send_local_session_disconnected_cb (ls->app_wrk_index, ls);
- }
- else
- {
- if (!client_wrk)
- {
- return application_local_session_cleanup (client_wrk, server_wrk,
- ls);
- }
- else if (ls->session_state < SESSION_STATE_READY)
- {
- application_t *client = application_get (client_wrk->app_index);
- client->cb_fns.session_connected_callback (client_wrk->wrk_index,
- ls->client_opaque,
- (stream_session_t *) ls,
- 1 /* is_fail */ );
- ls->session_state = SESSION_STATE_CLOSED;
- return application_local_session_cleanup (client_wrk, server_wrk,
- ls);
- }
- else
- {
- mq_send_local_session_disconnected_cb (client_wrk->wrk_index, ls);
- }
- }
-
- ls->session_state = SESSION_STATE_CLOSED;
-
- return 0;
-}
-
-int
-application_local_session_disconnect_w_index (u32 app_wrk_index, u32 ls_index)
-{
- app_worker_t *app_wrk;
- local_session_t *ls;
- app_wrk = app_worker_get (app_wrk_index);
- ls = application_get_local_session (app_wrk, ls_index);
- return application_local_session_disconnect (app_wrk_index, ls);
-}
-
-void
-app_worker_local_sessions_free (app_worker_t * app_wrk)
-{
- u32 index, server_wrk_index, session_index;
- u64 handle, *handles = 0;
- app_worker_t *server_wrk;
- segment_manager_t *sm;
- local_session_t *ls;
- int i;
-
- /*
- * Local sessions
- */
- if (app_wrk->local_sessions)
- {
- /* *INDENT-OFF* */
- pool_foreach (ls, app_wrk->local_sessions, ({
- application_local_session_disconnect (app_wrk->wrk_index, ls);
- }));
- /* *INDENT-ON* */
- }
-
- /*
- * Local connects
- */
- vec_reset_length (handles);
- /* *INDENT-OFF* */
- hash_foreach (handle, index, app_wrk->local_connects, ({
- vec_add1 (handles, handle);
- }));
- /* *INDENT-ON* */
-
- for (i = 0; i < vec_len (handles); i++)
- {
- application_client_local_connect_key_parse (handles[i],
- &server_wrk_index,
- &session_index);
- server_wrk = app_worker_get_if_valid (server_wrk_index);
- if (server_wrk)
- {
- ls = application_get_local_session (server_wrk, session_index);
- application_local_session_disconnect (app_wrk->wrk_index, ls);
- }
- }
-
- sm = segment_manager_get (app_wrk->local_segment_manager);
- sm->app_wrk_index = SEGMENT_MANAGER_INVALID_APP_INDEX;
- segment_manager_del (sm);
-}
-
-clib_error_t *
-vnet_app_add_tls_cert (vnet_app_add_tls_cert_args_t * a)
-{
- application_t *app;
- app = application_get (a->app_index);
- if (!app)
- return clib_error_return_code (0, VNET_API_ERROR_APPLICATION_NOT_ATTACHED,
- 0, "app %u doesn't exist", a->app_index);
- app->tls_cert = vec_dup (a->cert);
- return 0;
-}
-
-clib_error_t *
-vnet_app_add_tls_key (vnet_app_add_tls_key_args_t * a)
-{
- application_t *app;
- app = application_get (a->app_index);
- if (!app)
- return clib_error_return_code (0, VNET_API_ERROR_APPLICATION_NOT_ATTACHED,
- 0, "app %u doesn't exist", a->app_index);
- app->tls_key = vec_dup (a->key);
- return 0;
-}
-
-u8 *
-format_app_worker_listener (u8 * s, va_list * args)
-{
- app_worker_t *app_wrk = va_arg (*args, app_worker_t *);
- u64 handle = va_arg (*args, u64);
- u32 sm_index = va_arg (*args, u32);
- int verbose = va_arg (*args, int);
- stream_session_t *listener;
- application_t *app;
- u8 *app_name, *str;
-
- if (!app_wrk)
- {
- if (verbose)
- s = format (s, "%-40s%-25s%=10s%-15s%-15s%-10s", "Connection", "App",
- "Wrk", "API Client", "ListenerID", "SegManager");
- else
- s = format (s, "%-40s%-25s%=10s", "Connection", "App", "Wrk");
-
- return s;
- }
-
- app = application_get (app_wrk->app_index);
- app_name = app_get_name_from_reg_index (app);
- listener = listen_session_get_from_handle (handle);
- str = format (0, "%U", format_stream_session, listener, verbose);
-
- if (verbose)
- {
- s = format (s, "%-40s%-25s%=10u%-15u%-15u%-10u", str, app_name,
- app_wrk->wrk_map_index, app->api_client_index, handle,
- sm_index);
- }
- else
- s = format (s, "%-40s%-25s%=10u", str, app_name, app_wrk->wrk_map_index);
-
- vec_free (app_name);
- return s;