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 void
application_local_listener_session_endpoint (local_session_t * ll,
session_endpoint_t * sep)
return 0;
}
-application_t *
+static application_t *
application_alloc (void)
{
application_t *app;
return 1;
}
-int
+static int
application_alloc_and_init (app_init_args_t * a)
{
ssvm_segment_type_t seg_type = SSVM_SEGMENT_MEMFD;
return 0;
}
-void
+static void
application_free (application_t * app)
{
app_worker_map_t *wrk_map;
pool_put (app_main.app_pool, app);
}
-void
+static void
application_detach_process (application_t * app, u32 api_client_index)
{
vnet_app_worker_add_del_args_t _args = { 0 }, *args = &_args;
}
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->segment_index, 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;
-}
-
-clib_error_t *
vnet_app_worker_add_del (vnet_app_worker_add_del_args_t * a)
{
svm_fifo_segment_private_t *fs;
app = application_get (a->app_index);
if (!app)
- return clib_error_return_code (0, VNET_API_ERROR_INVALID_VALUE, 0,
- "App %u does not exist", a->app_index);
+ return VNET_API_ERROR_INVALID_VALUE;
if (a->is_add)
{
if ((rv = application_alloc_worker_and_init (app, &app_wrk)))
- return clib_error_return_code (0, rv, 0, "app wrk init: %d", rv);
+ return rv;
/* Map worker api index to the app */
app_wrk->api_client_index = a->api_client_index;
{
wrk_map = app_worker_map_get (app, a->wrk_map_index);
if (!wrk_map)
- return clib_error_return_code (0, VNET_API_ERROR_INVALID_VALUE, 0,
- "App %u does not have worker %u",
- app->app_index, a->wrk_map_index);
+ return VNET_API_ERROR_INVALID_VALUE;
+
app_wrk = app_worker_get (wrk_map->wrk_index);
if (!app_wrk)
- return clib_error_return_code (0, VNET_API_ERROR_INVALID_VALUE, 0,
- "No worker %u", a->wrk_map_index);
+ 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);
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%c", regp->name, 0);
+
+ clib_warning ("api client index %u does not have an api registration!",
+ api_client_index);
+ return format (0, "unknown%c", 0);
+}
+
+/**
+ * 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)
+{
+ svm_fifo_segment_private_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)
+ {
+ app_worker_t *owner_wrk;
+ application_t *owner_app;
+
+ owner_wrk = app_worker_get (sep->app_wrk_index);
+ owner_app = application_get (owner_wrk->app_index);
+ ns_index = owner_app->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;
+
+ 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 *server_wrk, *client_wrk;
+ application_t *client;
+ local_session_t *ll;
+ app_listener_t *al;
+ u32 table_index;
+ session_t *ls;
+ u8 fib_proto;
+ u64 lh;
+
+ 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))
+ {
+ table_index = application_local_session_table (client);
+ lh = session_lookup_local_endpoint (table_index, &a->sep);
+ if (lh == SESSION_DROP_HANDLE)
+ return VNET_API_ERROR_APP_CONNECT_FILTERED;
+
+ if (lh == SESSION_INVALID_HANDLE)
+ goto global_scope;
+
+ ll = application_get_local_listener_w_handle (lh);
+ al = app_listener_get_w_session ((session_t *) ll);
+
+ /*
+ * 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 (al->app_index == a->app_index)
+ goto global_scope;
+
+ server_wrk = app_listener_select_worker (al);
+ return app_worker_local_session_connect (client_wrk, server_wrk, ll,
+ a->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 (&a->sep))
+ return VNET_API_ERROR_SESSION_CONNECT;
+
+ if (!application_has_global_scope (client))
+ return VNET_API_ERROR_APP_CONNECT_SCOPE;
+
+ fib_proto = session_endpoint_fib_proto (&a->sep);
+ table_index = application_session_table (client, fib_proto);
+ ls = session_lookup_listener (table_index, &a->sep);
+ if (ls)
+ {
+ al = app_listener_get_w_session (ls);
+ server_wrk = app_listener_select_worker (al);
+ ll = (local_session_t *) ls;
+ return app_worker_local_session_connect (client_wrk, server_wrk, ll,
+ a->api_context);
+ }
+
+ /*
+ * 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;
+
+ if (!(app = application_get_if_valid (a->app_index)))
+ return VNET_API_ERROR_APPLICATION_NOT_ATTACHED;
+
+ al = app_listener_get_w_handle (a->handle);
+ 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)
+{
+ if (session_handle_is_local (a->handle))
+ {
+ local_session_t *ls;
+
+ /* Disconnect reply came to worker 1 not main thread */
+ app_interface_check_thread_and_barrier (vnet_disconnect_session, a);
+
+ if (!(ls = app_worker_get_local_session_from_handle (a->handle)))
+ return 0;
+
+ return app_worker_local_session_disconnect (a->app_index, ls);
+ }
+ else
+ {
+ 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->segment_index, 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)
{
Code Review / vpp.git / blobdiff