#include <vnet/session/session.h>
#include <vlibmemory/api.h>
#include <vnet/dpo/load_balance.h>
-#include <vnet/fib/ip4_fib.h>
/** @file
VPP's application/session API bind/unbind/connect/disconnect calls
*/
static u8
-ip_is_zero (ip46_address_t * ip46_address, u8 is_ip4)
+session_endpoint_is_local (session_endpoint_t * sep)
{
- if (is_ip4)
- return (ip46_address->ip4.as_u32 == 0);
- else
- return (ip46_address->as_u64[0] == 0 && ip46_address->as_u64[1] == 0);
+ return (ip_is_zero (&sep->ip, sep->is_ip4)
+ || ip_is_local_host (&sep->ip, sep->is_ip4));
}
static u8
-ip_is_local (ip46_address_t * ip46_address, u8 is_ip4)
+session_endpoint_is_zero (session_endpoint_t * sep)
{
- fib_node_index_t fei;
- fib_entry_flag_t flags;
- fib_prefix_t prefix;
+ return ip_is_zero (&sep->ip, sep->is_ip4);
+}
- /* Check if requester is local */
- if (is_ip4)
- {
- prefix.fp_len = 32;
- prefix.fp_proto = FIB_PROTOCOL_IP4;
- }
- else
+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))
{
- prefix.fp_len = 128;
- prefix.fp_proto = FIB_PROTOCOL_IP6;
+ 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;
}
-
- clib_memcpy (&prefix.fp_addr, ip46_address, sizeof (ip46_address_t));
- fei = fib_table_lookup (0, &prefix);
- flags = fib_entry_get_flags (fei);
-
- return (flags & FIB_ENTRY_FLAG_LOCAL);
+ return (is_zero || ip_is_local (sep->fib_index, &sep->ip, sep->is_ip4));
}
int
return 0;
}
-int
-vnet_bind_i (u32 app_index, session_type_t sst,
- transport_endpoint_t * tep, u64 * handle)
+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)
{
application_t *app;
- stream_session_t *listener;
+ u32 table_index, listener_index;
+ int rv, have_local = 0;
app = application_get_if_valid (app_index);
if (!app)
{
- clib_warning ("app not attached");
+ SESSION_DBG ("app not attached");
return VNET_API_ERROR_APPLICATION_NOT_ATTACHED;
}
- listener = stream_session_lookup_listener (&tep->ip, tep->port, sst);
- if (listener)
+ 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));
+ listener_index = session_lookup_session_endpoint (table_index, sep);
+ if (listener_index != SESSION_INVALID_INDEX)
return VNET_API_ERROR_ADDRESS_IN_USE;
- if (!ip_is_zero (&tep->ip, tep->is_ip4)
- && !ip_is_local (&tep->ip, tep->is_ip4))
- return VNET_API_ERROR_INVALID_VALUE_2;
+ /*
+ * 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))
+ {
+ table_index = application_local_session_table (app);
+ listener_index = session_lookup_session_endpoint (table_index, sep);
+ if (listener_index != SESSION_INVALID_INDEX)
+ return VNET_API_ERROR_ADDRESS_IN_USE;
+ session_lookup_add_session_endpoint (table_index, sep, app->index);
+ *handle = session_lookup_local_listener_make_handle (sep);
+ have_local = 1;
+ }
+
+ if (!application_has_global_scope (app))
+ return (have_local - 1);
+
+ /*
+ * Add session endpoint to global session table
+ */
/* Setup listen path down to transport */
- return application_start_listen (app, sst, tep, handle);
+ rv = application_start_listen (app, sep, handle);
+ if (rv && have_local)
+ session_lookup_del_session_endpoint (table_index, sep);
+ return rv;
}
int
vnet_unbind_i (u32 app_index, u64 handle)
{
application_t *app = application_get_if_valid (app_index);
+ stream_session_t *listener = 0;
+ u32 table_index;
if (!app)
{
- clib_warning ("app (%d) not attached", app_index);
+ SESSION_DBG ("app (%d) not attached", app_index);
return VNET_API_ERROR_APPLICATION_NOT_ATTACHED;
}
- /* Clear the listener */
- return application_stop_listen (app, handle);
+ /*
+ * 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.
+ */
+
+ if (application_has_local_scope (app))
+ {
+ session_endpoint_t sep = SESSION_ENDPOINT_NULL;
+ if (!session_lookup_local_is_handle (handle))
+ listener = listen_session_get_from_handle (handle);
+ if (listener)
+ {
+ if (listen_session_get_local_session_endpoint (listener, &sep))
+ {
+ clib_warning ("broken listener");
+ return -1;
+ }
+ }
+ else
+ {
+ if (session_lookup_local_listener_parse_handle (handle, &sep))
+ {
+ clib_warning ("can't parse handle");
+ return -1;
+ }
+ }
+ table_index = application_local_session_table (app);
+ session_lookup_del_session_endpoint (table_index, &sep);
+ }
+
+ /*
+ * Clear the global scope table of the listener
+ */
+ if (application_has_global_scope (app))
+ return application_stop_listen (app, handle);
+ return 0;
+}
+
+static int
+app_connect_redirect (application_t * server, void *mp)
+{
+ return server->cb_fns.redirect_connect_callback (server->api_client_index,
+ mp);
}
int
-vnet_connect_i (u32 app_index, u32 api_context, session_type_t sst,
- transport_endpoint_t * tep, void *mp)
+vnet_connect_i (u32 app_index, u32 api_context, session_endpoint_t * sep,
+ void *mp)
{
- stream_session_t *listener;
application_t *server, *app;
+ u32 table_index;
+
+ if (session_endpoint_is_zero (sep))
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ app = application_get (app_index);
+ session_endpoint_update_for_app (sep, app);
/*
- * Figure out if connecting to a local server
+ * First check the 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.
*/
- listener = stream_session_lookup_listener (&tep->ip, tep->port, sst);
- if (listener)
+ if (application_has_local_scope (app))
{
- server = application_get (listener->app_index);
-
+ table_index = application_local_session_table (app);
+ app_index = session_lookup_local_session_endpoint (table_index, sep);
+ server = application_get (app_index);
/*
* Server is willing to have a direct fifo connection created
* instead of going through the state machine, etc.
*/
- if (server->flags & APP_OPTIONS_FLAGS_USE_FIFO)
- return server->cb_fns.
- redirect_connect_callback (server->api_client_index, mp);
+ if (server && (server->flags & APP_OPTIONS_FLAGS_ACCEPT_REDIRECT))
+ return app_connect_redirect (server, mp);
}
/*
- * Not connecting to a local server. Create regular session
+ * If nothing found, check the global scope for locally attached
+ * destinations. Make sure first that we're allowed to.
*/
- app = application_get (app_index);
- return application_open_session (app, sst, tep, api_context);
+ if (session_endpoint_is_local (sep))
+ return VNET_API_ERROR_SESSION_CONNECT;
+
+ if (!application_has_global_scope (app))
+ return VNET_API_ERROR_APP_CONNECT_SCOPE;
+
+ table_index = application_session_table (app,
+ session_endpoint_fib_proto (sep));
+ app_index = session_lookup_session_endpoint (table_index, sep);
+ server = application_get (app_index);
+ if (server && (server->flags & APP_OPTIONS_FLAGS_ACCEPT_REDIRECT))
+ return app_connect_redirect (server, mp);
+
+ /*
+ * Not connecting to a local server, propagate to transport
+ */
+ if (application_open_session (app, sep, api_context))
+ return VNET_API_ERROR_SESSION_CONNECT;
+ return 0;
}
/**
uword
unformat_vnet_uri (unformat_input_t * input, va_list * args)
{
- session_type_t *sst = va_arg (*args, session_type_t *);
- transport_endpoint_t *tep = va_arg (*args, transport_endpoint_t *);
+ session_endpoint_t *sep = va_arg (*args, session_endpoint_t *);
- if (unformat (input, "tcp://%U/%d", unformat_ip4_address, &tep->ip.ip4,
- &tep->port))
+ if (unformat (input, "tcp://%U/%d", unformat_ip4_address, &sep->ip.ip4,
+ &sep->port))
{
- *sst = SESSION_TYPE_IP4_TCP;
- tep->port = clib_host_to_net_u16 (tep->port);
- tep->is_ip4 = 1;
+ sep->transport_proto = TRANSPORT_PROTO_TCP;
+ sep->port = clib_host_to_net_u16 (sep->port);
+ sep->is_ip4 = 1;
return 1;
}
- if (unformat (input, "udp://%U/%d", unformat_ip4_address, &tep->ip.ip4,
- &tep->port))
+ if (unformat (input, "udp://%U/%d", unformat_ip4_address, &sep->ip.ip4,
+ &sep->port))
{
- *sst = SESSION_TYPE_IP4_UDP;
- tep->port = clib_host_to_net_u16 (tep->port);
- tep->is_ip4 = 1;
+ sep->transport_proto = TRANSPORT_PROTO_UDP;
+ sep->port = clib_host_to_net_u16 (sep->port);
+ sep->is_ip4 = 1;
return 1;
}
- if (unformat (input, "udp://%U/%d", unformat_ip6_address, &tep->ip.ip6,
- &tep->port))
+ if (unformat (input, "udp://%U/%d", unformat_ip6_address, &sep->ip.ip6,
+ &sep->port))
{
- *sst = SESSION_TYPE_IP6_UDP;
- tep->port = clib_host_to_net_u16 (tep->port);
+ sep->transport_proto = TRANSPORT_PROTO_UDP;
+ sep->port = clib_host_to_net_u16 (sep->port);
+ sep->is_ip4 = 0;
return 1;
}
- if (unformat (input, "tcp://%U/%d", unformat_ip6_address, &tep->ip.ip6,
- &tep->port))
+ if (unformat (input, "tcp://%U/%d", unformat_ip6_address, &sep->ip.ip6,
+ &sep->port))
{
- *sst = SESSION_TYPE_IP6_TCP;
- tep->port = clib_host_to_net_u16 (tep->port);
+ sep->transport_proto = TRANSPORT_PROTO_TCP;
+ sep->port = clib_host_to_net_u16 (sep->port);
+ sep->is_ip4 = 0;
return 1;
}
}
static u8 *cache_uri;
-static session_type_t cache_sst;
-static transport_endpoint_t *cache_tep;
+static session_endpoint_t *cache_sep;
int
-parse_uri (char *uri, session_type_t * sst, transport_endpoint_t * tep)
+parse_uri (char *uri, session_endpoint_t * sep)
{
unformat_input_t _input, *input = &_input;
if (cache_uri && !strncmp (uri, (char *) cache_uri, vec_len (cache_uri)))
{
- *sst = cache_sst;
- *tep = *cache_tep;
+ *sep = *cache_sep;
return 0;
}
/* Parse uri */
unformat_init_string (input, uri, strlen (uri));
- if (!unformat (input, "%U", unformat_vnet_uri, sst, tep))
+ if (!unformat (input, "%U", unformat_vnet_uri, sep))
{
unformat_free (input);
return VNET_API_ERROR_INVALID_VALUE;
vec_free (cache_uri);
cache_uri = (u8 *) uri;
- cache_sst = *sst;
- if (cache_tep)
- clib_mem_free (cache_tep);
- cache_tep = clib_mem_alloc (sizeof (*tep));
- *cache_tep = *tep;
+ if (cache_sep)
+ clib_mem_free (cache_sep);
+ cache_sep = clib_mem_alloc (sizeof (*sep));
+ *cache_sep = *sep;
return 0;
}
+static int
+session_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;
+}
+
/**
- * Attaches application.
+ * 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
+clib_error_t *
vnet_application_attach (vnet_app_attach_args_t * a)
{
application_t *app = 0;
segment_manager_t *sm;
u8 *seg_name;
+ u64 secret;
+ u32 app_ns_index = 0;
int rv;
+ app = application_lookup (a->api_client_index);
+ if (app)
+ return clib_error_return_code (0, VNET_API_ERROR_APP_ALREADY_ATTACHED,
+ 0, "app already attached");
+
+ secret = a->options[APP_OPTIONS_NAMESPACE_SECRET];
+ if ((rv = session_validate_namespace (a->namespace_id, secret,
+ &app_ns_index)))
+ return clib_error_return_code (0, rv, 0, "namespace validation: %d", rv);
+ a->options[APP_OPTIONS_NAMESPACE] = app_ns_index;
app = application_new ();
if ((rv = application_init (app, a->api_client_index, a->options,
a->session_cb_vft)))
- return rv;
+ return clib_error_return_code (0, rv, 0, "app init: %d", rv);
a->app_event_queue_address = pointer_to_uword (app->event_queue);
sm = segment_manager_get (app->first_segment_manager);
return 0;
}
+/**
+ * Detach application from vpp
+ */
int
vnet_application_detach (vnet_app_detach_args_t * a)
{
int
vnet_bind_uri (vnet_bind_args_t * a)
{
- session_type_t sst = SESSION_N_TYPES;
- transport_endpoint_t tep;
+ session_endpoint_t sep = SESSION_ENDPOINT_NULL;
int rv;
- memset (&tep, 0, sizeof (tep));
- rv = parse_uri (a->uri, &sst, &tep);
+ rv = parse_uri (a->uri, &sep);
if (rv)
return rv;
- if ((rv = vnet_bind_i (a->app_index, sst, &tep, &a->handle)))
- return rv;
-
- return 0;
+ return vnet_bind_i (a->app_index, &sep, &a->handle);
}
int
vnet_unbind_uri (vnet_unbind_args_t * a)
{
- session_type_t sst = SESSION_N_TYPES;
stream_session_t *listener;
- transport_endpoint_t tep;
+ session_endpoint_t sep = SESSION_ENDPOINT_NULL;
int rv;
- rv = parse_uri (a->uri, &sst, &tep);
+ rv = parse_uri (a->uri, &sep);
if (rv)
return rv;
- listener = stream_session_lookup_listener (&tep.ip,
- clib_host_to_net_u16 (tep.port),
- sst);
+ /* NOTE: only default table supported for uri */
+ listener = session_lookup_listener (0, &sep);
if (!listener)
return VNET_API_ERROR_ADDRESS_NOT_IN_USE;
return vnet_unbind_i (a->app_index, listen_session_get_handle (listener));
}
-int
+clib_error_t *
vnet_connect_uri (vnet_connect_args_t * a)
{
- transport_endpoint_t tep;
- session_type_t sst;
+ session_endpoint_t sep = SESSION_ENDPOINT_NULL;
int rv;
/* Parse uri */
- memset (&tep, 0, sizeof (tep));
- rv = parse_uri (a->uri, &sst, &tep);
+ rv = parse_uri (a->uri, &sep);
if (rv)
- return rv;
-
- return vnet_connect_i (a->app_index, a->api_context, sst, &tep, a->mp);
+ return clib_error_return_code (0, rv, 0, "app init: %d", rv);
+ if ((rv = vnet_connect_i (a->app_index, a->api_context, &sep, a->mp)))
+ return clib_error_return_code (0, rv, 0, "connect failed");
+ return 0;
}
int
u32 index, thread_index;
stream_session_t *s;
- stream_session_parse_handle (a->handle, &index, &thread_index);
+ session_parse_handle (a->handle, &index, &thread_index);
s = stream_session_get_if_valid (index, thread_index);
if (!s || s->app_index != a->app_index)
return 0;
}
-int
+clib_error_t *
vnet_bind (vnet_bind_args_t * a)
{
- session_type_t sst = SESSION_N_TYPES;
int rv;
-
- sst = session_type_from_proto_and_ip (a->proto, a->tep.is_ip4);
- if ((rv = vnet_bind_i (a->app_index, sst, &a->tep, &a->handle)))
- return rv;
-
+ if ((rv = vnet_bind_i (a->app_index, &a->sep, &a->handle)))
+ return clib_error_return_code (0, rv, 0, "bind failed");
return 0;
}
-int
+clib_error_t *
vnet_unbind (vnet_unbind_args_t * a)
{
- return vnet_unbind_i (a->app_index, a->handle);
+ int rv;
+ if ((rv = vnet_unbind_i (a->app_index, a->handle)))
+ return clib_error_return_code (0, rv, 0, "unbind failed");
+ return 0;
}
-int
+clib_error_t *
vnet_connect (vnet_connect_args_t * a)
{
- session_type_t sst;
-
- sst = session_type_from_proto_and_ip (a->proto, a->tep.is_ip4);
- return vnet_connect_i (a->app_index, a->api_context, sst, &a->tep, a->mp);
+ int rv;
+ if ((rv = vnet_connect_i (a->app_index, a->api_context, &a->sep, a->mp)))
+ return clib_error_return_code (0, rv, 0, "connect failed");
+ return 0;
}
/*
Code Review / vpp.git / blobdiff