2 * Copyright (c) 2018-2019 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <vnet/session/application_interface.h>
17 #include <vppinfra/lock.h>
18 #include <vnet/tls/tls.h>
20 static tls_main_t tls_main;
21 static tls_engine_vft_t *tls_vfts;
23 #define TLS_INVALID_HANDLE ~0
24 #define TLS_IDX_MASK 0x00FFFFFF
25 #define TLS_ENGINE_TYPE_SHIFT 29
27 void tls_disconnect (u32 ctx_handle, u32 thread_index);
30 tls_disconnect_transport (tls_ctx_t * ctx)
32 vnet_disconnect_args_t a = {
33 .handle = ctx->tls_session_handle,
34 .app_index = tls_main.app_index,
37 if (vnet_disconnect_session (&a))
38 clib_warning ("disconnect returned");
42 tls_get_available_engine (void)
45 for (i = 0; i < vec_len (tls_vfts); i++)
47 if (tls_vfts[i].ctx_alloc)
50 return CRYPTO_ENGINE_NONE;
54 tls_add_vpp_q_rx_evt (session_t * s)
56 if (svm_fifo_set_event (s->rx_fifo))
57 session_send_io_evt_to_thread (s->rx_fifo, SESSION_IO_EVT_RX);
62 tls_add_vpp_q_builtin_rx_evt (session_t * s)
64 if (svm_fifo_set_event (s->rx_fifo))
65 session_send_io_evt_to_thread (s->rx_fifo, SESSION_IO_EVT_BUILTIN_RX);
70 tls_add_vpp_q_tx_evt (session_t * s)
72 if (svm_fifo_set_event (s->tx_fifo))
73 session_send_io_evt_to_thread (s->tx_fifo, SESSION_IO_EVT_TX);
78 tls_add_app_q_evt (app_worker_t * app, session_t * app_session)
80 return app_worker_lock_and_send_event (app, app_session, SESSION_IO_EVT_RX);
84 tls_listener_ctx_alloc (void)
86 tls_main_t *tm = &tls_main;
89 pool_get (tm->listener_ctx_pool, ctx);
90 clib_memset (ctx, 0, sizeof (*ctx));
91 return ctx - tm->listener_ctx_pool;
95 tls_listener_ctx_free (tls_ctx_t * ctx)
98 memset (ctx, 0xfb, sizeof (*ctx));
99 pool_put (tls_main.listener_ctx_pool, ctx);
103 tls_listener_ctx_get (u32 ctx_index)
105 return pool_elt_at_index (tls_main.listener_ctx_pool, ctx_index);
109 tls_listener_ctx_index (tls_ctx_t * ctx)
111 return (ctx - tls_main.listener_ctx_pool);
115 tls_ctx_half_open_alloc (void)
117 tls_main_t *tm = &tls_main;
122 pool_get_aligned_will_expand (tm->half_open_ctx_pool, will_expand, 0);
123 if (PREDICT_FALSE (will_expand && vlib_num_workers ()))
125 clib_rwlock_writer_lock (&tm->half_open_rwlock);
126 pool_get (tm->half_open_ctx_pool, ctx);
127 ctx_index = ctx - tm->half_open_ctx_pool;
128 clib_rwlock_writer_unlock (&tm->half_open_rwlock);
132 /* reader lock assumption: only main thread will call pool_get */
133 clib_rwlock_reader_lock (&tm->half_open_rwlock);
134 pool_get (tm->half_open_ctx_pool, ctx);
135 ctx_index = ctx - tm->half_open_ctx_pool;
136 clib_rwlock_reader_unlock (&tm->half_open_rwlock);
138 clib_memset (ctx, 0, sizeof (*ctx));
143 tls_ctx_half_open_free (u32 ho_index)
145 tls_main_t *tm = &tls_main;
146 clib_rwlock_writer_lock (&tm->half_open_rwlock);
147 pool_put_index (tls_main.half_open_ctx_pool, ho_index);
148 clib_rwlock_writer_unlock (&tm->half_open_rwlock);
152 tls_ctx_half_open_get (u32 ctx_index)
154 tls_main_t *tm = &tls_main;
155 clib_rwlock_reader_lock (&tm->half_open_rwlock);
156 return pool_elt_at_index (tm->half_open_ctx_pool, ctx_index);
160 tls_ctx_half_open_reader_unlock ()
162 clib_rwlock_reader_unlock (&tls_main.half_open_rwlock);
166 tls_ctx_half_open_index (tls_ctx_t * ctx)
168 return (ctx - tls_main.half_open_ctx_pool);
172 tls_notify_app_enqueue (tls_ctx_t * ctx, session_t * app_session)
174 app_worker_t *app_wrk;
175 app_wrk = app_worker_get_if_valid (app_session->app_wrk_index);
176 if (PREDICT_TRUE (app_wrk != 0))
177 tls_add_app_q_evt (app_wrk, app_session);
181 tls_notify_app_accept (tls_ctx_t * ctx)
183 session_t *app_listener, *app_session;
184 app_worker_t *app_wrk;
188 lctx = tls_listener_ctx_get (ctx->listener_ctx_index);
189 app_listener = listen_session_get_from_handle (lctx->app_session_handle);
191 app_session = session_get (ctx->c_s_index, ctx->c_thread_index);
192 app_session->app_wrk_index = ctx->parent_app_wrk_index;
193 app_session->connection_index = ctx->tls_ctx_handle;
194 app_session->session_type = app_listener->session_type;
195 app_session->listener_handle = listen_session_get_handle (app_listener);
196 app_session->session_state = SESSION_STATE_ACCEPTING;
198 if ((rv = app_worker_init_accepted (app_session)))
200 TLS_DBG (1, "failed to allocate fifos");
201 session_free (app_session);
204 ctx->app_session_handle = session_handle (app_session);
205 ctx->parent_app_wrk_index = app_session->app_wrk_index;
206 app_wrk = app_worker_get (app_session->app_wrk_index);
207 return app_worker_accept_notify (app_wrk, app_session);
211 tls_notify_app_connected (tls_ctx_t * ctx, session_error_t err)
213 session_t *app_session;
214 app_worker_t *app_wrk;
216 app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_index);
219 tls_disconnect_transport (ctx);
225 /* Free app session pre-allocated when transport was established */
226 if (ctx->tls_type == TRANSPORT_PROTO_TLS)
227 session_free (session_get (ctx->c_s_index, ctx->c_thread_index));
231 /* For DTLS the app session is not preallocated because the underlying udp
232 * session might migrate to a different worker during the handshake */
233 if (ctx->tls_type == TRANSPORT_PROTO_DTLS)
236 app_session = session_alloc (ctx->c_thread_index);
237 app_session->session_state = SESSION_STATE_CREATED;
238 ctx->c_s_index = app_session->session_index;
240 session_type_from_proto_and_ip (TRANSPORT_PROTO_DTLS, ctx->tcp_is_ip4);
241 app_session->session_type = st;
242 app_session->connection_index = ctx->tls_ctx_handle;
246 app_session = session_get (ctx->c_s_index, ctx->c_thread_index);
249 app_session->app_wrk_index = ctx->parent_app_wrk_index;
251 if ((err = app_worker_init_connected (app_wrk, app_session)))
254 app_session->session_state = SESSION_STATE_READY;
255 if (app_worker_connect_notify (app_wrk, app_session,
256 SESSION_E_NONE, ctx->parent_app_api_context))
258 TLS_DBG (1, "failed to notify app");
259 app_session->session_state = SESSION_STATE_CONNECTING;
260 tls_disconnect (ctx->tls_ctx_handle, vlib_get_thread_index ());
264 ctx->app_session_handle = session_handle (app_session);
269 ctx->no_app_session = 1;
270 tls_disconnect (ctx->tls_ctx_handle, vlib_get_thread_index ());
271 return app_worker_connect_notify (app_wrk, 0, err,
272 ctx->parent_app_api_context);
276 tls_ctx_parse_handle (u32 ctx_handle, u32 * ctx_index, u32 * engine_type)
278 *ctx_index = ctx_handle & TLS_IDX_MASK;
279 *engine_type = ctx_handle >> TLS_ENGINE_TYPE_SHIFT;
282 static inline crypto_engine_type_t
283 tls_get_engine_type (crypto_engine_type_t requested,
284 crypto_engine_type_t preferred)
286 if (requested != CRYPTO_ENGINE_NONE)
288 if (tls_vfts[requested].ctx_alloc)
290 return CRYPTO_ENGINE_NONE;
292 if (!tls_vfts[preferred].ctx_alloc)
293 return tls_get_available_engine ();
298 tls_ctx_alloc (crypto_engine_type_t engine_type)
301 ctx_index = tls_vfts[engine_type].ctx_alloc ();
302 return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
306 tls_ctx_alloc_w_thread (crypto_engine_type_t engine_type, u32 thread_index)
309 ctx_index = tls_vfts[engine_type].ctx_alloc_w_thread (thread_index);
310 return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
314 tls_ctx_attach (crypto_engine_type_t engine_type, u32 thread_index, void *ctx)
317 ctx_index = tls_vfts[engine_type].ctx_attach (thread_index, ctx);
318 return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
322 tls_ctx_detach (tls_ctx_t *ctx)
324 return tls_vfts[ctx->tls_ctx_engine].ctx_detach (ctx);
327 static inline tls_ctx_t *
328 tls_ctx_get (u32 ctx_handle)
330 u32 ctx_index, engine_type;
331 tls_ctx_parse_handle (ctx_handle, &ctx_index, &engine_type);
332 return tls_vfts[engine_type].ctx_get (ctx_index);
335 static inline tls_ctx_t *
336 tls_ctx_get_w_thread (u32 ctx_handle, u8 thread_index)
338 u32 ctx_index, engine_type;
339 tls_ctx_parse_handle (ctx_handle, &ctx_index, &engine_type);
340 return tls_vfts[engine_type].ctx_get_w_thread (ctx_index, thread_index);
344 tls_ctx_init_server (tls_ctx_t * ctx)
346 return tls_vfts[ctx->tls_ctx_engine].ctx_init_server (ctx);
350 tls_ctx_init_client (tls_ctx_t * ctx)
352 return tls_vfts[ctx->tls_ctx_engine].ctx_init_client (ctx);
356 tls_ctx_write (tls_ctx_t * ctx, session_t * app_session,
357 transport_send_params_t * sp)
361 sp->max_burst_size = sp->max_burst_size * TRANSPORT_PACER_MIN_MSS;
362 n_wrote = tls_vfts[ctx->tls_ctx_engine].ctx_write (ctx, app_session, sp);
363 sp->max_burst_size = n_wrote;
364 return n_wrote > 0 ? clib_max (n_wrote / TRANSPORT_PACER_MIN_MSS, 1) : 0;
368 tls_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
370 return tls_vfts[ctx->tls_ctx_engine].ctx_read (ctx, tls_session);
374 tls_ctx_transport_close (tls_ctx_t * ctx)
376 return tls_vfts[ctx->tls_ctx_engine].ctx_transport_close (ctx);
380 tls_ctx_app_close (tls_ctx_t * ctx)
382 return tls_vfts[ctx->tls_ctx_engine].ctx_app_close (ctx);
386 tls_ctx_free (tls_ctx_t * ctx)
388 tls_vfts[ctx->tls_ctx_engine].ctx_free (ctx);
392 tls_ctx_handshake_is_over (tls_ctx_t * ctx)
394 return tls_vfts[ctx->tls_ctx_engine].ctx_handshake_is_over (ctx);
398 tls_session_reset_callback (session_t * s)
401 transport_connection_t *tc;
402 session_t *app_session;
404 ctx = tls_ctx_get (s->opaque);
405 ctx->is_passive_close = 1;
406 tc = &ctx->connection;
407 if (tls_ctx_handshake_is_over (ctx))
409 session_transport_reset_notify (tc);
410 session_transport_closed_notify (tc);
411 tls_disconnect_transport (ctx);
415 session_get_if_valid (ctx->c_s_index, ctx->c_thread_index)))
417 session_free (app_session);
418 ctx->c_s_index = SESSION_INVALID_INDEX;
419 tls_disconnect_transport (ctx);
424 tls_add_segment_callback (u32 client_index, u64 segment_handle)
426 /* No-op for builtin */
431 tls_del_segment_callback (u32 client_index, u64 segment_handle)
437 tls_session_disconnect_callback (session_t * tls_session)
441 TLS_DBG (1, "TCP disconnecting handle %x session %u", tls_session->opaque,
442 tls_session->session_index);
444 ASSERT (tls_session->thread_index == vlib_get_thread_index ()
445 || vlib_thread_is_main_w_barrier ());
447 ctx = tls_ctx_get_w_thread (tls_session->opaque, tls_session->thread_index);
448 ctx->is_passive_close = 1;
449 tls_ctx_transport_close (ctx);
453 tls_session_accept_callback (session_t * tls_session)
455 session_t *tls_listener, *app_session;
456 tls_ctx_t *lctx, *ctx;
460 listen_session_get_from_handle (tls_session->listener_handle);
461 lctx = tls_listener_ctx_get (tls_listener->opaque);
463 ctx_handle = tls_ctx_alloc (lctx->tls_ctx_engine);
464 ctx = tls_ctx_get (ctx_handle);
465 memcpy (ctx, lctx, sizeof (*lctx));
466 ctx->c_thread_index = vlib_get_thread_index ();
467 ctx->tls_ctx_handle = ctx_handle;
468 tls_session->session_state = SESSION_STATE_READY;
469 tls_session->opaque = ctx_handle;
470 ctx->tls_session_handle = session_handle (tls_session);
471 ctx->listener_ctx_index = tls_listener->opaque;
472 ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
473 ctx->ckpair_index = lctx->ckpair_index;
475 /* Preallocate app session. Avoids allocating a session post handshake
476 * on tls_session rx and potentially invalidating the session pool */
477 app_session = session_alloc (ctx->c_thread_index);
478 app_session->session_state = SESSION_STATE_CREATED;
479 ctx->c_s_index = app_session->session_index;
481 TLS_DBG (1, "Accept on listener %u new connection [%u]%x",
482 tls_listener->opaque, vlib_get_thread_index (), ctx_handle);
484 return tls_ctx_init_server (ctx);
488 tls_app_rx_callback (session_t * tls_session)
492 /* DTLS session migrating, wait for next notification */
493 if (PREDICT_FALSE (tls_session->flags & SESSION_F_IS_MIGRATING))
496 ctx = tls_ctx_get (tls_session->opaque);
497 tls_ctx_read (ctx, tls_session);
502 tls_app_tx_callback (session_t * tls_session)
506 ctx = tls_ctx_get (tls_session->opaque);
507 transport_connection_reschedule (&ctx->connection);
513 tls_session_connected_cb (u32 tls_app_index, u32 ho_ctx_index,
514 session_t *tls_session, session_error_t err)
516 session_t *app_session;
517 tls_ctx_t *ho_ctx, *ctx;
521 ho_ctx = tls_ctx_half_open_get (ho_ctx_index);
525 app_worker_t *app_wrk;
529 app_wrk = app_worker_get_if_valid (ho_ctx->parent_app_wrk_index);
532 api_context = ho_ctx->parent_app_api_context;
533 app_worker_connect_notify (app_wrk, 0, err, api_context);
535 tls_ctx_half_open_reader_unlock ();
536 tls_ctx_half_open_free (ho_ctx_index);
540 ctx_handle = tls_ctx_alloc (ho_ctx->tls_ctx_engine);
541 ctx = tls_ctx_get (ctx_handle);
542 clib_memcpy_fast (ctx, ho_ctx, sizeof (*ctx));
543 tls_ctx_half_open_reader_unlock ();
544 tls_ctx_half_open_free (ho_ctx_index);
546 ctx->c_thread_index = vlib_get_thread_index ();
547 ctx->tls_ctx_handle = ctx_handle;
548 ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
550 TLS_DBG (1, "TCP connect for %u returned %u. New connection [%u]%x",
551 ho_ctx_index, err, vlib_get_thread_index (),
552 (ctx) ? ctx_handle : ~0);
554 ctx->tls_session_handle = session_handle (tls_session);
555 tls_session->opaque = ctx_handle;
556 tls_session->session_state = SESSION_STATE_READY;
558 /* Preallocate app session. Avoids allocating a session post handshake
559 * on tls_session rx and potentially invalidating the session pool */
560 app_session = session_alloc (ctx->c_thread_index);
561 app_session->session_state = SESSION_STATE_CREATED;
562 ctx->c_s_index = app_session->session_index;
563 st = session_type_from_proto_and_ip (TRANSPORT_PROTO_TLS, ctx->tcp_is_ip4);
564 app_session->session_type = st;
565 app_session->connection_index = ctx->tls_ctx_handle;
567 return tls_ctx_init_client (ctx);
571 dtls_session_connected_cb (u32 app_wrk_index, u32 ctx_handle, session_t *us,
576 ctx = tls_ctx_get_w_thread (ctx_handle, 1 /* udp allocs on thread 1 */);
578 ctx->tls_session_handle = session_handle (us);
579 ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
580 us->opaque = ctx_handle;
582 /* We don't preallocate the app session because the udp session might
583 * actually migrate to a different worker at the end of the handshake */
585 return tls_ctx_init_client (ctx);
589 tls_session_connected_callback (u32 tls_app_index, u32 ho_ctx_index,
590 session_t *tls_session, session_error_t err)
592 if (session_get_transport_proto (tls_session) == TRANSPORT_PROTO_TCP)
593 return tls_session_connected_cb (tls_app_index, ho_ctx_index, tls_session,
596 return dtls_session_connected_cb (tls_app_index, ho_ctx_index, tls_session,
601 tls_app_session_cleanup (session_t * s, session_cleanup_ntf_t ntf)
605 if (ntf == SESSION_CLEANUP_TRANSPORT)
607 /* Allow cleanup of tcp session */
608 if (s->session_state == SESSION_STATE_TRANSPORT_DELETED)
613 ctx = tls_ctx_get (s->opaque);
614 if (!ctx->no_app_session)
615 session_transport_delete_notify (&ctx->connection);
620 dtls_migrate_udp (void *arg)
622 tls_ctx_t *ctx = (tls_ctx_t *) arg;
623 u32 ctx_handle, thread_index;
626 thread_index = session_thread_from_handle (ctx->tls_session_handle);
627 ASSERT (thread_index == vlib_get_thread_index ());
629 ctx_handle = tls_ctx_attach (ctx->tls_ctx_engine, thread_index, ctx);
630 ctx = tls_ctx_get_w_thread (ctx_handle, thread_index);
631 ctx->tls_ctx_handle = ctx_handle;
633 us = session_get_from_handle (ctx->tls_session_handle);
634 us->opaque = ctx_handle;
635 us->flags &= ~SESSION_F_IS_MIGRATING;
636 if (svm_fifo_max_dequeue (us->tx_fifo))
637 session_send_io_evt_to_thread (us->tx_fifo, SESSION_IO_EVT_TX);
641 dtls_session_migrate_callback (session_t *us, session_handle_t new_sh)
643 u32 new_thread = session_thread_from_handle (new_sh);
646 /* Migrate dtls context to new thread */
647 ctx = tls_ctx_get_w_thread (us->opaque, us->thread_index);
648 ctx->tls_session_handle = new_sh;
649 ctx = tls_ctx_detach (ctx);
650 ctx->is_migrated = 1;
652 session_send_rpc_evt_to_thread (new_thread, dtls_migrate_udp, (void *) ctx);
655 static session_cb_vft_t tls_app_cb_vft = {
656 .session_accept_callback = tls_session_accept_callback,
657 .session_disconnect_callback = tls_session_disconnect_callback,
658 .session_connected_callback = tls_session_connected_callback,
659 .session_reset_callback = tls_session_reset_callback,
660 .add_segment_callback = tls_add_segment_callback,
661 .del_segment_callback = tls_del_segment_callback,
662 .builtin_app_rx_callback = tls_app_rx_callback,
663 .builtin_app_tx_callback = tls_app_tx_callback,
664 .session_migrate_callback = dtls_session_migrate_callback,
665 .session_cleanup_callback = tls_app_session_cleanup,
669 tls_connect (transport_endpoint_cfg_t * tep)
671 vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs;
672 transport_endpt_crypto_cfg_t *ccfg;
673 crypto_engine_type_t engine_type;
674 session_endpoint_cfg_t *sep;
675 tls_main_t *tm = &tls_main;
676 app_worker_t *app_wrk;
682 sep = (session_endpoint_cfg_t *) tep;
684 return SESSION_E_NOEXTCFG;
686 app_wrk = app_worker_get (sep->app_wrk_index);
687 app = application_get (app_wrk->app_index);
689 ccfg = &sep->ext_cfg->crypto;
690 engine_type = tls_get_engine_type (ccfg->crypto_engine, app->tls_engine);
691 if (engine_type == CRYPTO_ENGINE_NONE)
693 clib_warning ("No tls engine_type available");
694 return SESSION_E_NOCRYPTOENG;
697 ctx_index = tls_ctx_half_open_alloc ();
698 ctx = tls_ctx_half_open_get (ctx_index);
699 ctx->parent_app_wrk_index = sep->app_wrk_index;
700 ctx->parent_app_api_context = sep->opaque;
701 ctx->tcp_is_ip4 = sep->is_ip4;
702 ctx->tls_type = sep->transport_proto;
703 ctx->ckpair_index = ccfg->ckpair_index;
704 if (ccfg->hostname[0])
706 ctx->srv_hostname = format (0, "%s", ccfg->hostname);
707 vec_terminate_c_string (ctx->srv_hostname);
709 tls_ctx_half_open_reader_unlock ();
711 app_worker_alloc_connects_segment_manager (app_wrk);
712 ctx->tls_ctx_engine = engine_type;
714 clib_memcpy_fast (&cargs->sep, sep, sizeof (session_endpoint_t));
715 cargs->sep.transport_proto = TRANSPORT_PROTO_TCP;
716 cargs->app_index = tm->app_index;
717 cargs->api_context = ctx_index;
718 cargs->sep_ext.ns_index = app->ns_index;
719 if ((rv = vnet_connect (cargs)))
722 TLS_DBG (1, "New connect request %u engine %d", ctx_index, engine_type);
727 tls_disconnect (u32 ctx_handle, u32 thread_index)
731 TLS_DBG (1, "Disconnecting %x", ctx_handle);
733 ctx = tls_ctx_get (ctx_handle);
734 tls_ctx_app_close (ctx);
738 tls_start_listen (u32 app_listener_index, transport_endpoint_t * tep)
740 vnet_listen_args_t _bargs, *args = &_bargs;
741 transport_endpt_crypto_cfg_t *ccfg;
742 app_worker_t *app_wrk;
743 tls_main_t *tm = &tls_main;
744 session_handle_t tls_al_handle;
745 session_endpoint_cfg_t *sep;
746 session_t *tls_listener;
747 session_t *app_listener;
748 crypto_engine_type_t engine_type;
755 sep = (session_endpoint_cfg_t *) tep;
757 return SESSION_E_NOEXTCFG;
759 app_wrk = app_worker_get (sep->app_wrk_index);
760 app = application_get (app_wrk->app_index);
762 ccfg = &sep->ext_cfg->crypto;
763 engine_type = tls_get_engine_type (ccfg->crypto_engine, app->tls_engine);
764 if (engine_type == CRYPTO_ENGINE_NONE)
766 clib_warning ("No tls engine_type available");
767 return SESSION_E_NOCRYPTOENG;
770 clib_memset (args, 0, sizeof (*args));
771 args->app_index = tm->app_index;
772 args->sep_ext = *sep;
773 args->sep_ext.ns_index = app->ns_index;
774 args->sep_ext.transport_proto = TRANSPORT_PROTO_TCP;
775 if (sep->transport_proto == TRANSPORT_PROTO_DTLS)
777 args->sep_ext.transport_proto = TRANSPORT_PROTO_UDP;
778 args->sep_ext.transport_flags = TRANSPORT_CFG_F_CONNECTED;
780 if ((rv = vnet_listen (args)))
783 lctx_index = tls_listener_ctx_alloc ();
784 tls_al_handle = args->handle;
785 al = app_listener_get_w_handle (tls_al_handle);
786 tls_listener = app_listener_get_session (al);
787 tls_listener->opaque = lctx_index;
789 app_listener = listen_session_get (app_listener_index);
791 lctx = tls_listener_ctx_get (lctx_index);
792 lctx->parent_app_wrk_index = sep->app_wrk_index;
793 lctx->tls_session_handle = tls_al_handle;
794 lctx->app_session_handle = listen_session_get_handle (app_listener);
795 lctx->tcp_is_ip4 = sep->is_ip4;
796 lctx->tls_ctx_engine = engine_type;
797 lctx->tls_type = sep->transport_proto;
798 lctx->ckpair_index = ccfg->ckpair_index;
800 if (tls_vfts[engine_type].ctx_start_listen (lctx))
802 vnet_unlisten_args_t a = {
803 .handle = lctx->tls_session_handle,
804 .app_index = tls_main.app_index,
807 if ((vnet_unlisten (&a)))
808 clib_warning ("unlisten returned");
809 tls_listener_ctx_free (lctx);
810 lctx_index = SESSION_INVALID_INDEX;
813 TLS_DBG (1, "Started listening %d, engine type %d", lctx_index,
819 tls_stop_listen (u32 lctx_index)
821 session_endpoint_t sep = SESSION_ENDPOINT_NULL;
822 crypto_engine_type_t engine_type;
823 transport_connection_t *lc;
828 lctx = tls_listener_ctx_get (lctx_index);
830 /* Cleanup listener from session lookup table */
831 ls = session_get_from_handle (lctx->tls_session_handle);
832 lc = session_get_transport (ls);
834 sep.fib_index = lc->fib_index;
835 sep.port = lc->lcl_port;
836 sep.is_ip4 = lc->is_ip4;
837 sep.transport_proto = lctx->tls_type;
838 clib_memcpy (&sep.ip, &lc->lcl_ip, sizeof (lc->lcl_ip));
839 session_lookup_del_session_endpoint2 (&sep);
841 vnet_unlisten_args_t a = {
842 .handle = lctx->tls_session_handle,
843 .app_index = tls_main.app_index,
844 .wrk_map_index = 0 /* default wrk */
846 if ((rv = vnet_unlisten (&a)))
847 clib_warning ("unlisten returned %d", rv);
849 engine_type = lctx->tls_ctx_engine;
850 tls_vfts[engine_type].ctx_stop_listen (lctx);
852 tls_listener_ctx_free (lctx);
856 transport_connection_t *
857 tls_connection_get (u32 ctx_index, u32 thread_index)
860 ctx = tls_ctx_get_w_thread (ctx_index, thread_index);
861 return &ctx->connection;
864 transport_connection_t *
865 tls_listener_get (u32 listener_index)
868 ctx = tls_listener_ctx_get (listener_index);
869 return &ctx->connection;
873 tls_custom_tx_callback (void *session, transport_send_params_t * sp)
875 session_t *app_session = (session_t *) session;
878 if (PREDICT_FALSE (app_session->session_state
879 >= SESSION_STATE_TRANSPORT_CLOSED))
883 ctx = tls_ctx_get (app_session->connection_index);
884 return tls_ctx_write (ctx, app_session, sp);
888 format_tls_ctx (u8 * s, va_list * args)
890 u32 tcp_si, tcp_ti, ctx_index, ctx_engine;
891 tls_ctx_t *ctx = va_arg (*args, tls_ctx_t *);
894 proto = ctx->tls_type == TRANSPORT_PROTO_TLS ? "TLS" : "DTLS";
895 session_parse_handle (ctx->tls_session_handle, &tcp_si, &tcp_ti);
896 tls_ctx_parse_handle (ctx->tls_ctx_handle, &ctx_index, &ctx_engine);
898 format (s, "[%d:%d][%s] app_wrk %u index %u engine %u ts %d:%d",
899 ctx->c_thread_index, ctx->c_s_index, proto,
900 ctx->parent_app_wrk_index, ctx_index, ctx_engine, tcp_ti, tcp_si);
906 format_tls_listener_ctx (u8 * s, va_list * args)
908 session_t *tls_listener;
913 ctx = va_arg (*args, tls_ctx_t *);
915 proto = ctx->tls_type == TRANSPORT_PROTO_TLS ? "TLS" : "DTLS";
916 al = app_listener_get_w_handle (ctx->tls_session_handle);
917 tls_listener = app_listener_get_session (al);
918 s = format (s, "[%d:%d][%s] app_wrk %u engine %u ts %d:%d",
919 ctx->c_thread_index, ctx->c_s_index, proto,
920 ctx->parent_app_wrk_index, ctx->tls_ctx_engine,
921 tls_listener->thread_index, tls_listener->session_index);
927 format_tls_ctx_state (u8 * s, va_list * args)
932 ctx = va_arg (*args, tls_ctx_t *);
933 ts = session_get (ctx->c_s_index, ctx->c_thread_index);
934 if (ts->session_state == SESSION_STATE_LISTENING)
935 s = format (s, "%s", "LISTEN");
938 if (ts->session_state >= SESSION_STATE_TRANSPORT_CLOSED)
939 s = format (s, "%s", "CLOSED");
940 else if (ts->session_state == SESSION_STATE_APP_CLOSED)
941 s = format (s, "%s", "APP-CLOSED");
942 else if (ts->session_state >= SESSION_STATE_TRANSPORT_CLOSING)
943 s = format (s, "%s", "CLOSING");
944 else if (tls_ctx_handshake_is_over (ctx))
945 s = format (s, "%s", "ESTABLISHED");
947 s = format (s, "%s", "HANDSHAKE");
954 format_tls_connection (u8 * s, va_list * args)
956 u32 ctx_index = va_arg (*args, u32);
957 u32 thread_index = va_arg (*args, u32);
958 u32 verbose = va_arg (*args, u32);
961 ctx = tls_ctx_get_w_thread (ctx_index, thread_index);
965 s = format (s, "%-" SESSION_CLI_ID_LEN "U", format_tls_ctx, ctx);
968 s = format (s, "%-" SESSION_CLI_STATE_LEN "U", format_tls_ctx_state,
971 s = format (s, "\n");
977 format_tls_listener (u8 * s, va_list * args)
979 u32 tc_index = va_arg (*args, u32);
980 u32 __clib_unused thread_index = va_arg (*args, u32);
981 u32 verbose = va_arg (*args, u32);
982 tls_ctx_t *ctx = tls_listener_ctx_get (tc_index);
984 s = format (s, "%-" SESSION_CLI_ID_LEN "U", format_tls_listener_ctx, ctx);
986 s = format (s, "%-" SESSION_CLI_STATE_LEN "U", format_tls_ctx_state, ctx);
991 format_tls_half_open (u8 * s, va_list * args)
993 u32 tc_index = va_arg (*args, u32);
994 u32 __clib_unused thread_index = va_arg (*args, u32);
995 tls_ctx_t *ctx = tls_ctx_half_open_get (tc_index);
996 s = format (s, "[TLS] half-open app %u", ctx->parent_app_wrk_index);
997 tls_ctx_half_open_reader_unlock ();
1002 tls_transport_endpoint_get (u32 ctx_handle, u32 thread_index,
1003 transport_endpoint_t * tep, u8 is_lcl)
1005 tls_ctx_t *ctx = tls_ctx_get_w_thread (ctx_handle, thread_index);
1006 session_t *tcp_session;
1008 tcp_session = session_get_from_handle (ctx->tls_session_handle);
1009 session_get_endpoint (tcp_session, tep, is_lcl);
1013 tls_transport_listener_endpoint_get (u32 ctx_handle,
1014 transport_endpoint_t * tep, u8 is_lcl)
1016 session_t *tls_listener;
1018 tls_ctx_t *ctx = tls_listener_ctx_get (ctx_handle);
1020 al = app_listener_get_w_handle (ctx->tls_session_handle);
1021 tls_listener = app_listener_get_session (al);
1022 session_get_endpoint (tls_listener, tep, is_lcl);
1025 static clib_error_t *
1026 tls_enable (vlib_main_t * vm, u8 is_en)
1028 u32 add_segment_size = 256 << 20, first_seg_size = 32 << 20;
1029 vnet_app_detach_args_t _da, *da = &_da;
1030 vnet_app_attach_args_t _a, *a = &_a;
1031 u64 options[APP_OPTIONS_N_OPTIONS];
1032 tls_main_t *tm = &tls_main;
1033 u32 fifo_size = 128 << 12;
1037 da->app_index = tm->app_index;
1038 da->api_client_index = APP_INVALID_INDEX;
1039 vnet_application_detach (da);
1043 first_seg_size = tm->first_seg_size ? tm->first_seg_size : first_seg_size;
1044 fifo_size = tm->fifo_size ? tm->fifo_size : fifo_size;
1046 clib_memset (a, 0, sizeof (*a));
1047 clib_memset (options, 0, sizeof (options));
1049 a->session_cb_vft = &tls_app_cb_vft;
1050 a->api_client_index = APP_INVALID_INDEX;
1051 a->options = options;
1052 a->name = format (0, "tls");
1053 a->options[APP_OPTIONS_SEGMENT_SIZE] = first_seg_size;
1054 a->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = add_segment_size;
1055 a->options[APP_OPTIONS_RX_FIFO_SIZE] = fifo_size;
1056 a->options[APP_OPTIONS_TX_FIFO_SIZE] = fifo_size;
1057 a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN;
1058 a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE;
1059 a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_IS_TRANSPORT_APP;
1061 if (vnet_application_attach (a))
1063 clib_warning ("failed to attach tls app");
1064 return clib_error_return (0, "failed to attach tls app");
1067 tm->app_index = a->app_index;
1073 static const transport_proto_vft_t tls_proto = {
1074 .enable = tls_enable,
1075 .connect = tls_connect,
1076 .close = tls_disconnect,
1077 .start_listen = tls_start_listen,
1078 .stop_listen = tls_stop_listen,
1079 .get_connection = tls_connection_get,
1080 .get_listener = tls_listener_get,
1081 .custom_tx = tls_custom_tx_callback,
1082 .format_connection = format_tls_connection,
1083 .format_half_open = format_tls_half_open,
1084 .format_listener = format_tls_listener,
1085 .get_transport_endpoint = tls_transport_endpoint_get,
1086 .get_transport_listener_endpoint = tls_transport_listener_endpoint_get,
1087 .transport_options = {
1090 .tx_type = TRANSPORT_TX_INTERNAL,
1091 .service_type = TRANSPORT_SERVICE_APP,
1096 dtls_connect (transport_endpoint_cfg_t *tep)
1098 vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs;
1099 transport_endpt_crypto_cfg_t *ccfg;
1100 crypto_engine_type_t engine_type;
1101 session_endpoint_cfg_t *sep;
1102 tls_main_t *tm = &tls_main;
1103 app_worker_t *app_wrk;
1109 sep = (session_endpoint_cfg_t *) tep;
1113 app_wrk = app_worker_get (sep->app_wrk_index);
1114 app = application_get (app_wrk->app_index);
1116 ccfg = &sep->ext_cfg->crypto;
1117 engine_type = tls_get_engine_type (ccfg->crypto_engine, app->tls_engine);
1118 if (engine_type == CRYPTO_ENGINE_NONE)
1120 clib_warning ("No tls engine_type available");
1124 ctx_handle = tls_ctx_alloc_w_thread (engine_type, 1 /* because of udp */);
1125 ctx = tls_ctx_get_w_thread (ctx_handle, 1);
1126 ctx->parent_app_wrk_index = sep->app_wrk_index;
1127 ctx->parent_app_api_context = sep->opaque;
1128 ctx->tcp_is_ip4 = sep->is_ip4;
1129 ctx->ckpair_index = ccfg->ckpair_index;
1130 ctx->tls_type = sep->transport_proto;
1131 ctx->tls_ctx_handle = ctx_handle;
1132 if (ccfg->hostname[0])
1134 ctx->srv_hostname = format (0, "%s", ccfg->hostname);
1135 vec_terminate_c_string (ctx->srv_hostname);
1138 app_worker_alloc_connects_segment_manager (app_wrk);
1139 ctx->tls_ctx_engine = engine_type;
1141 clib_memcpy_fast (&cargs->sep, sep, sizeof (session_endpoint_t));
1142 cargs->sep.transport_proto = TRANSPORT_PROTO_UDP;
1143 cargs->app_index = tm->app_index;
1144 cargs->api_context = ctx_handle;
1145 cargs->sep_ext.ns_index = app->ns_index;
1146 cargs->sep_ext.transport_flags = TRANSPORT_CFG_F_CONNECTED;
1147 if ((rv = vnet_connect (cargs)))
1150 TLS_DBG (1, "New DTLS connect request %x engine %d", ctx_handle,
1156 dtls_cleanup_callback (u32 ctx_index, u32 thread_index)
1161 static const transport_proto_vft_t dtls_proto = {
1163 .connect = dtls_connect,
1164 .close = tls_disconnect,
1165 .start_listen = tls_start_listen,
1166 .stop_listen = tls_stop_listen,
1167 .get_connection = tls_connection_get,
1168 .get_listener = tls_listener_get,
1169 .custom_tx = tls_custom_tx_callback,
1170 .cleanup = dtls_cleanup_callback,
1171 .format_connection = format_tls_connection,
1172 .format_half_open = format_tls_half_open,
1173 .format_listener = format_tls_listener,
1174 .get_transport_endpoint = tls_transport_endpoint_get,
1175 .get_transport_listener_endpoint = tls_transport_listener_endpoint_get,
1176 .transport_options = {
1179 .tx_type = TRANSPORT_TX_INTERNAL,
1180 .service_type = TRANSPORT_SERVICE_APP,
1185 tls_register_engine (const tls_engine_vft_t * vft, crypto_engine_type_t type)
1187 vec_validate (tls_vfts, type);
1188 tls_vfts[type] = *vft;
1191 static clib_error_t *
1192 tls_init (vlib_main_t * vm)
1194 vlib_thread_main_t *vtm = vlib_get_thread_main ();
1195 tls_main_t *tm = &tls_main;
1198 num_threads = 1 /* main thread */ + vtm->n_threads;
1200 if (!tm->ca_cert_path)
1201 tm->ca_cert_path = TLS_CA_CERT_PATH;
1203 clib_rwlock_init (&tm->half_open_rwlock);
1205 vec_validate (tm->rx_bufs, num_threads - 1);
1206 vec_validate (tm->tx_bufs, num_threads - 1);
1208 transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto,
1209 FIB_PROTOCOL_IP4, ~0);
1210 transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto,
1211 FIB_PROTOCOL_IP6, ~0);
1213 transport_register_protocol (TRANSPORT_PROTO_DTLS, &dtls_proto,
1214 FIB_PROTOCOL_IP4, ~0);
1215 transport_register_protocol (TRANSPORT_PROTO_DTLS, &dtls_proto,
1216 FIB_PROTOCOL_IP6, ~0);
1220 VLIB_INIT_FUNCTION (tls_init);
1222 static clib_error_t *
1223 tls_config_fn (vlib_main_t * vm, unformat_input_t * input)
1225 tls_main_t *tm = &tls_main;
1227 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1229 if (unformat (input, "use-test-cert-in-ca"))
1230 tm->use_test_cert_in_ca = 1;
1231 else if (unformat (input, "ca-cert-path %s", &tm->ca_cert_path))
1233 else if (unformat (input, "first-segment-size %U", unformat_memory_size,
1234 &tm->first_seg_size))
1236 else if (unformat (input, "fifo-size %U", unformat_memory_size, &tmp))
1238 if (tmp >= 0x100000000ULL)
1240 return clib_error_return
1241 (0, "fifo-size %llu (0x%llx) too large", tmp, tmp);
1243 tm->fifo_size = tmp;
1246 return clib_error_return (0, "unknown input `%U'",
1247 format_unformat_error, input);
1252 VLIB_EARLY_CONFIG_FUNCTION (tls_config_fn, "tls");
1255 vnet_tls_get_main (void)
1261 * fd.io coding-style-patch-verification: ON
1264 * eval: (c-set-style "gnu")