-static u8
-session_endpoint_is_local (session_endpoint_t * sep)
-{
- return (ip_is_zero (&sep->ip, sep->is_ip4)
- || ip_is_local_host (&sep->ip, sep->is_ip4));
-}
-
-static u8
-session_endpoint_is_zero (session_endpoint_t * sep)
-{
- return ip_is_zero (&sep->ip, sep->is_ip4);
-}
-
-u8
-session_endpoint_in_ns (session_endpoint_t * sep)
-{
- u8 is_zero = ip_is_zero (&sep->ip, sep->is_ip4);
- if (!is_zero && 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_zero || ip_is_local (sep->fib_index, &sep->ip, sep->is_ip4));
-}
-
-int
-api_parse_session_handle (u64 handle, u32 * session_index, u32 * thread_index)
-{
- session_manager_main_t *smm = vnet_get_session_manager_main ();
- stream_session_t *pool;
-
- *thread_index = handle & 0xFFFFFFFF;
- *session_index = handle >> 32;
-
- if (*thread_index >= vec_len (smm->sessions))
- return VNET_API_ERROR_INVALID_VALUE;
-
- pool = smm->sessions[*thread_index];
-
- if (pool_is_free_index (pool, *session_index))
- return VNET_API_ERROR_INVALID_VALUE_2;
-
- return 0;
-}
-
-static void
-session_endpoint_update_for_app (session_endpoint_t * sep,
- application_t * app)
-{
- app_namespace_t *app_ns;
- app_ns = app_namespace_get (app->ns_index);
- if (app_ns)
- {
- /* Ask transport and network to bind to/connect using local interface
- * that "supports" app's namespace. This will fix our local connection
- * endpoint.
- */
- sep->sw_if_index = app_ns->sw_if_index;
- sep->fib_index =
- sep->is_ip4 ? app_ns->ip4_fib_index : app_ns->ip6_fib_index;
- }
-}
-
-static int
-vnet_bind_i (u32 app_index, session_endpoint_t * sep, u64 * handle)
-{
- u64 lh, ll_handle = SESSION_INVALID_HANDLE;
- application_t *app;
- u32 table_index;
- int rv;
-
- app = application_get_if_valid (app_index);
- if (!app)
- {
- SESSION_DBG ("app not attached");
- return VNET_API_ERROR_APPLICATION_NOT_ATTACHED;
- }
-
- session_endpoint_update_for_app (sep, app);
- if (!session_endpoint_in_ns (sep))
- return VNET_API_ERROR_INVALID_VALUE_2;
-
- table_index = application_session_table (app,
- session_endpoint_fib_proto (sep));
- lh = session_lookup_endpoint_listener (table_index, sep, 1);
- if (lh != SESSION_INVALID_HANDLE)
- return VNET_API_ERROR_ADDRESS_IN_USE;
-
- /*
- * 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_zero (sep))
- {
- if ((rv = application_start_local_listen (app, sep, handle)))
- return rv;
- ll_handle = *handle;
- }
-
- if (!application_has_global_scope (app))
- return (ll_handle == SESSION_INVALID_HANDLE ? -1 : 0);
-
- /*
- * Add session endpoint to global session table
- */
-
- /* Setup listen path down to transport */
- rv = application_start_listen (app, sep, handle);
- if (rv && ll_handle != SESSION_INVALID_HANDLE)
- session_lookup_del_session_endpoint (table_index, sep);
-
- /*
- * Store in local table listener the index of the transport layer
- * listener. We'll need local listeners are hit and we need to
- * return global handle
- */
- if (ll_handle != SESSION_INVALID_HANDLE)
- {
- local_session_t *ll;
- stream_session_t *tl;
- ll = application_get_local_listener_w_handle (ll_handle);
- tl = listen_session_get_from_handle (*handle);
- ll->transport_listener_index = tl->session_index;
- }
- return rv;
-}
-
-int
-vnet_unbind_i (u32 app_index, session_handle_t handle)
-{
- application_t *app;
- int rv;
-
- if (!(app = application_get_if_valid (app_index)))
- {
- SESSION_DBG ("app (%d) not attached", app_index);
- return VNET_API_ERROR_APPLICATION_NOT_ATTACHED;
- }
-
- if (application_has_local_scope (app))
- {
- if ((rv = application_stop_local_listen (app, handle)))
- return rv;
- }
-
- /*
- * Clear the global scope table of the listener
- */
- if (application_has_global_scope (app))
- return application_stop_listen (app, handle);
- return 0;
-}
-
-int
-vnet_connect_i (u32 client_index, u32 api_context, session_endpoint_t * sep,
- void *mp)
-{
- application_t *server, *client;
- u32 table_index, server_index, li;
- stream_session_t *listener;
- local_session_t *ll;
- u64 lh;
-
- if (session_endpoint_is_zero (sep))
- return VNET_API_ERROR_INVALID_VALUE;
-
- client = application_get (client_index);
- session_endpoint_update_for_app (sep, client);
-
- /*
- * 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))
- {
- table_index = application_local_session_table (client);
- lh = session_lookup_local_endpoint (table_index, sep);
- if (lh == SESSION_DROP_HANDLE)
- return VNET_API_ERROR_APP_CONNECT_FILTERED;
-
- if (lh == SESSION_INVALID_HANDLE)
- goto global_scope;
-
- local_session_parse_handle (lh, &server_index, &li);
-
- /*
- * Break loop if rule in local table points to connecting app. This
- * can happen if client is a generic proxy. Route connect through
- * global table instead.
- */
- if (server_index != client_index)
- {
- server = application_get (server_index);
- ll = application_get_local_listen_session (server, li);
- return application_local_session_connect (table_index, client,
- server, ll, api_context);
- }
- }
-
- /*
- * If nothing found, check the global scope for locally attached
- * destinations. Make sure first that we're allowed to.
- */
-
-global_scope:
- if (session_endpoint_is_local (sep))
- return VNET_API_ERROR_SESSION_CONNECT;
-
- if (!application_has_global_scope (client))
- return VNET_API_ERROR_APP_CONNECT_SCOPE;
-
- table_index = application_session_table (client,
- session_endpoint_fib_proto (sep));
- listener = session_lookup_listener (table_index, sep);
- if (listener)
- {
- server = application_get (listener->app_index);
- if (server)
- return application_local_session_connect (table_index, client, server,
- (local_session_t *)
- listener, api_context);
- }
-
- /*
- * Not connecting to a local server, propagate to transport
- */
- if (application_open_session (client, sep, api_context))
- return VNET_API_ERROR_SESSION_CONNECT;
- return 0;
-}
-