}
if (err)
- goto failed;
+ {
+ /* Free app session pre-allocated when transport was established */
+ if (ctx->tls_type == TRANSPORT_PROTO_TLS)
+ session_free (session_get (ctx->c_s_index, ctx->c_thread_index));
+ goto failed;
+ }
+
+ /* For DTLS the app session is not preallocated because the underlying udp
+ * session might migrate to a different worker during the handshake */
+ if (ctx->tls_type == TRANSPORT_PROTO_DTLS)
+ {
+ session_type_t st;
+ app_session = session_alloc (ctx->c_thread_index);
+ app_session->session_state = SESSION_STATE_CREATED;
+ ctx->c_s_index = app_session->session_index;
+ st =
+ session_type_from_proto_and_ip (TRANSPORT_PROTO_DTLS, ctx->tcp_is_ip4);
+ app_session->session_type = st;
+ app_session->connection_index = ctx->tls_ctx_handle;
+ }
+ else
+ {
+ app_session = session_get (ctx->c_s_index, ctx->c_thread_index);
+ }
- app_session = session_get (ctx->c_s_index, ctx->c_thread_index);
app_session->app_wrk_index = ctx->parent_app_wrk_index;
- app_session->connection_index = ctx->tls_ctx_handle;
- app_session->session_type =
- session_type_from_proto_and_ip (TRANSPORT_PROTO_TLS, ctx->tcp_is_ip4);
if ((err = app_worker_init_connected (app_wrk, app_session)))
goto failed;
return 0;
failed:
- /* Free app session pre-allocated when transport was established */
- session_free (session_get (ctx->c_s_index, ctx->c_thread_index));
ctx->no_app_session = 1;
tls_disconnect (ctx->tls_ctx_handle, vlib_get_thread_index ());
return app_worker_connect_notify (app_wrk, 0, err,
return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
}
+static inline u32
+tls_ctx_alloc_w_thread (crypto_engine_type_t engine_type, u32 thread_index)
+{
+ u32 ctx_index;
+ ctx_index = tls_vfts[engine_type].ctx_alloc_w_thread (thread_index);
+ return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
+}
+
+static inline u32
+tls_ctx_attach (crypto_engine_type_t engine_type, u32 thread_index, void *ctx)
+{
+ u32 ctx_index;
+ ctx_index = tls_vfts[engine_type].ctx_attach (thread_index, ctx);
+ return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
+}
+
+static inline void *
+tls_ctx_detach (tls_ctx_t *ctx)
+{
+ return tls_vfts[ctx->tls_ctx_engine].ctx_detach (ctx);
+}
+
static inline tls_ctx_t *
tls_ctx_get (u32 ctx_handle)
{
{
tls_ctx_t *ctx;
+ /* DTLS session migrating, wait for next notification */
+ if (PREDICT_FALSE (tls_session->flags & SESSION_F_IS_MIGRATING))
+ return 0;
+
ctx = tls_ctx_get (tls_session->opaque);
tls_ctx_read (ctx, tls_session);
return 0;
}
int
-tls_session_connected_callback (u32 tls_app_index, u32 ho_ctx_index,
- session_t * tls_session, session_error_t err)
+tls_session_connected_cb (u32 tls_app_index, u32 ho_ctx_index,
+ session_t *tls_session, session_error_t err)
{
session_t *app_session;
tls_ctx_t *ho_ctx, *ctx;
+ session_type_t st;
u32 ctx_handle;
ho_ctx = tls_ctx_half_open_get (ho_ctx_index);
ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
TLS_DBG (1, "TCP connect for %u returned %u. New connection [%u]%x",
- ho_ctx_index, is_fail, vlib_get_thread_index (),
+ ho_ctx_index, err, vlib_get_thread_index (),
(ctx) ? ctx_handle : ~0);
ctx->tls_session_handle = session_handle (tls_session);
app_session = session_alloc (ctx->c_thread_index);
app_session->session_state = SESSION_STATE_CREATED;
ctx->c_s_index = app_session->session_index;
+ st = session_type_from_proto_and_ip (TRANSPORT_PROTO_TLS, ctx->tcp_is_ip4);
+ app_session->session_type = st;
+ app_session->connection_index = ctx->tls_ctx_handle;
+
+ return tls_ctx_init_client (ctx);
+}
+
+int
+dtls_session_connected_cb (u32 app_wrk_index, u32 ctx_handle, session_t *us,
+ session_error_t err)
+{
+ tls_ctx_t *ctx;
+
+ ctx = tls_ctx_get_w_thread (ctx_handle, 1 /* udp allocs on thread 1 */);
+
+ ctx->tls_session_handle = session_handle (us);
+ ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
+ us->opaque = ctx_handle;
+
+ /* We don't preallocate the app session because the udp session might
+ * actually migrate to a different worker at the end of the handshake */
return tls_ctx_init_client (ctx);
}
+int
+tls_session_connected_callback (u32 tls_app_index, u32 ho_ctx_index,
+ session_t *tls_session, session_error_t err)
+{
+ if (session_get_transport_proto (tls_session) == TRANSPORT_PROTO_TCP)
+ return tls_session_connected_cb (tls_app_index, ho_ctx_index, tls_session,
+ err);
+ else
+ return dtls_session_connected_cb (tls_app_index, ho_ctx_index, tls_session,
+ err);
+}
+
static void
tls_app_session_cleanup (session_t * s, session_cleanup_ntf_t ntf)
{
tls_ctx_free (ctx);
}
-/* *INDENT-OFF* */
+static void
+dtls_migrate_udp (void *arg)
+{
+ tls_ctx_t *ctx = (tls_ctx_t *) arg;
+ u32 ctx_handle, thread_index;
+ session_t *us;
+
+ thread_index = session_thread_from_handle (ctx->tls_session_handle);
+ ASSERT (thread_index == vlib_get_thread_index ());
+
+ ctx_handle = tls_ctx_attach (ctx->tls_ctx_engine, thread_index, ctx);
+ ctx = tls_ctx_get_w_thread (ctx_handle, thread_index);
+ ctx->tls_ctx_handle = ctx_handle;
+
+ us = session_get_from_handle (ctx->tls_session_handle);
+ us->opaque = ctx_handle;
+ us->flags &= ~SESSION_F_IS_MIGRATING;
+ if (svm_fifo_max_dequeue (us->tx_fifo))
+ session_send_io_evt_to_thread (us->tx_fifo, SESSION_IO_EVT_TX);
+}
+
+static void
+dtls_session_migrate_callback (session_t *us, session_handle_t new_sh)
+{
+ u32 new_thread = session_thread_from_handle (new_sh);
+ tls_ctx_t *ctx;
+
+ /* Migrate dtls context to new thread */
+ ctx = tls_ctx_get_w_thread (us->opaque, us->thread_index);
+ ctx->tls_session_handle = new_sh;
+ ctx = tls_ctx_detach (ctx);
+ ctx->is_migrated = 1;
+
+ session_send_rpc_evt_to_thread (new_thread, dtls_migrate_udp, (void *) ctx);
+}
+
static session_cb_vft_t tls_app_cb_vft = {
.session_accept_callback = tls_session_accept_callback,
.session_disconnect_callback = tls_session_disconnect_callback,
.del_segment_callback = tls_del_segment_callback,
.builtin_app_rx_callback = tls_app_rx_callback,
.builtin_app_tx_callback = tls_app_tx_callback,
+ .session_migrate_callback = dtls_session_migrate_callback,
.session_cleanup_callback = tls_app_session_cleanup,
};
-/* *INDENT-ON* */
int
tls_connect (transport_endpoint_cfg_t * tep)
{
vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs;
- session_endpoint_cfg_t *sep;
crypto_engine_type_t engine_type;
+ session_endpoint_cfg_t *sep;
tls_main_t *tm = &tls_main;
app_worker_t *app_wrk;
application_t *app;
ctx->parent_app_api_context = sep->opaque;
ctx->tcp_is_ip4 = sep->is_ip4;
ctx->ckpair_index = sep->ckpair_index;
+ ctx->tls_type = sep->transport_proto;
if (sep->hostname)
{
ctx->srv_hostname = format (0, "%v", sep->hostname);
args->sep_ext = *sep;
args->sep_ext.ns_index = app->ns_index;
args->sep_ext.transport_proto = TRANSPORT_PROTO_TCP;
+ if (sep->transport_proto == TRANSPORT_PROTO_DTLS)
+ {
+ args->sep_ext.transport_proto = TRANSPORT_PROTO_UDP;
+ args->sep_ext.transport_flags = TRANSPORT_CFG_F_CONNECTED;
+ }
if (vnet_listen (args))
return -1;
lctx->tcp_is_ip4 = sep->is_ip4;
lctx->tls_ctx_engine = engine_type;
lctx->ckpair_index = sep->ckpair_index;
+ lctx->tls_type = sep->transport_proto;
if (tls_vfts[engine_type].ctx_start_listen (lctx))
{
sep.fib_index = lc->fib_index;
sep.port = lc->lcl_port;
sep.is_ip4 = lc->is_ip4;
- sep.transport_proto = TRANSPORT_PROTO_TLS;
+ sep.transport_proto = lctx->tls_type;
clib_memcpy (&sep.ip, &lc->lcl_ip, sizeof (lc->lcl_ip));
session_lookup_del_session_endpoint2 (&sep);
{
u32 tcp_si, tcp_ti, ctx_index, ctx_engine;
tls_ctx_t *ctx = va_arg (*args, tls_ctx_t *);
+ char *proto;
+ proto = ctx->tls_type == TRANSPORT_PROTO_TLS ? "TLS" : "DTLS";
session_parse_handle (ctx->tls_session_handle, &tcp_si, &tcp_ti);
tls_ctx_parse_handle (ctx->tls_ctx_handle, &ctx_index, &ctx_engine);
- s = format (s, "[%d:%d][TLS] app_wrk %u index %u engine %u tcp %d:%d",
- ctx->c_thread_index, ctx->c_s_index,
- ctx->parent_app_wrk_index, ctx_index,
- ctx_engine, tcp_ti, tcp_si);
+ s =
+ format (s, "[%d:%d][%s] app_wrk %u index %u engine %u ts %d:%d",
+ ctx->c_thread_index, ctx->c_s_index, proto,
+ ctx->parent_app_wrk_index, ctx_index, ctx_engine, tcp_ti, tcp_si);
return s;
}
session_t *tls_listener;
app_listener_t *al;
tls_ctx_t *ctx;
+ char *proto;
ctx = va_arg (*args, tls_ctx_t *);
+ proto = ctx->tls_type == TRANSPORT_PROTO_TLS ? "TLS" : "DTLS";
al = app_listener_get_w_handle (ctx->tls_session_handle);
tls_listener = app_listener_get_session (al);
- s = format (s, "[%d:%d][TLS] app_wrk %u engine %u tcp %d:%d",
- ctx->c_thread_index, ctx->c_s_index,
+ s = format (s, "[%d:%d][%s] app_wrk %u engine %u ts %d:%d",
+ ctx->c_thread_index, ctx->c_s_index, proto,
ctx->parent_app_wrk_index, ctx->tls_ctx_engine,
tls_listener->thread_index, tls_listener->session_index);
return 0;
}
-/* *INDENT-OFF* */
static const transport_proto_vft_t tls_proto = {
.enable = tls_enable,
.connect = tls_connect,
.service_type = TRANSPORT_SERVICE_APP,
},
};
-/* *INDENT-ON* */
+
+int
+dtls_connect (transport_endpoint_cfg_t *tep)
+{
+ vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs;
+ crypto_engine_type_t engine_type;
+ session_endpoint_cfg_t *sep;
+ tls_main_t *tm = &tls_main;
+ app_worker_t *app_wrk;
+ application_t *app;
+ tls_ctx_t *ctx;
+ u32 ctx_handle;
+ int rv;
+
+ sep = (session_endpoint_cfg_t *) tep;
+ app_wrk = app_worker_get (sep->app_wrk_index);
+ app = application_get (app_wrk->app_index);
+ engine_type = tls_get_engine_type (app->tls_engine);
+ if (engine_type == CRYPTO_ENGINE_NONE)
+ {
+ clib_warning ("No tls engine_type available");
+ return -1;
+ }
+
+ ctx_handle = tls_ctx_alloc_w_thread (engine_type, 1 /* because of udp */);
+ ctx = tls_ctx_get_w_thread (ctx_handle, 1);
+ ctx->parent_app_wrk_index = sep->app_wrk_index;
+ ctx->parent_app_api_context = sep->opaque;
+ ctx->tcp_is_ip4 = sep->is_ip4;
+ ctx->ckpair_index = sep->ckpair_index;
+ ctx->tls_type = sep->transport_proto;
+ ctx->tls_ctx_handle = ctx_handle;
+ if (sep->hostname)
+ {
+ ctx->srv_hostname = format (0, "%v", sep->hostname);
+ vec_terminate_c_string (ctx->srv_hostname);
+ }
+
+ app_worker_alloc_connects_segment_manager (app_wrk);
+ ctx->tls_ctx_engine = engine_type;
+
+ clib_memcpy_fast (&cargs->sep, sep, sizeof (session_endpoint_t));
+ cargs->sep.transport_proto = TRANSPORT_PROTO_UDP;
+ cargs->app_index = tm->app_index;
+ cargs->api_context = ctx_handle;
+ cargs->sep_ext.ns_index = app->ns_index;
+ cargs->sep_ext.transport_flags = TRANSPORT_CFG_F_CONNECTED;
+ if ((rv = vnet_connect (cargs)))
+ return rv;
+
+ TLS_DBG (1, "New DTLS connect request %x engine %d", ctx_handle,
+ engine_type);
+ return 0;
+}
+
+static void
+dtls_cleanup_callback (u32 ctx_index, u32 thread_index)
+{
+ /* No op */
+}
+
+static const transport_proto_vft_t dtls_proto = {
+ .enable = 0,
+ .connect = dtls_connect,
+ .close = tls_disconnect,
+ .start_listen = tls_start_listen,
+ .stop_listen = tls_stop_listen,
+ .get_connection = tls_connection_get,
+ .get_listener = tls_listener_get,
+ .custom_tx = tls_custom_tx_callback,
+ .cleanup = dtls_cleanup_callback,
+ .format_connection = format_tls_connection,
+ .format_half_open = format_tls_half_open,
+ .format_listener = format_tls_listener,
+ .get_transport_endpoint = tls_transport_endpoint_get,
+ .get_transport_listener_endpoint = tls_transport_listener_endpoint_get,
+ .transport_options = {
+ .name = "dtls",
+ .short_name = "D",
+ .tx_type = TRANSPORT_TX_INTERNAL,
+ .service_type = TRANSPORT_SERVICE_APP,
+ },
+};
void
tls_register_engine (const tls_engine_vft_t * vft, crypto_engine_type_t type)
FIB_PROTOCOL_IP4, ~0);
transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto,
FIB_PROTOCOL_IP6, ~0);
+
+ transport_register_protocol (TRANSPORT_PROTO_DTLS, &dtls_proto,
+ FIB_PROTOCOL_IP4, ~0);
+ transport_register_protocol (TRANSPORT_PROTO_DTLS, &dtls_proto,
+ FIB_PROTOCOL_IP6, ~0);
return 0;
}
Code Review / vpp.git / blobdiff