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 28
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 session_enqueue_notify (s);
69 tls_add_vpp_q_tx_evt (session_t * s)
71 if (svm_fifo_set_event (s->tx_fifo))
72 session_send_io_evt_to_thread (s->tx_fifo, SESSION_IO_EVT_TX);
77 tls_add_app_q_evt (app_worker_t *app_wrk, session_t *app_session)
79 app_worker_add_event (app_wrk, 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;
120 if (vec_len (tm->postponed_ho_free))
121 tls_flush_postponed_ho_cleanups ();
123 pool_get_aligned_safe (tm->half_open_ctx_pool, ctx, CLIB_CACHE_LINE_BYTES);
125 clib_memset (ctx, 0, sizeof (*ctx));
126 ctx->c_c_index = ctx - tm->half_open_ctx_pool;
127 ctx->c_thread_index = transport_cl_thread ();
129 return ctx->c_c_index;
133 tls_ctx_half_open_free (u32 ho_index)
135 pool_put_index (tls_main.half_open_ctx_pool, ho_index);
139 tls_ctx_half_open_get (u32 ctx_index)
141 tls_main_t *tm = &tls_main;
142 return pool_elt_at_index (tm->half_open_ctx_pool, ctx_index);
146 tls_add_postponed_ho_cleanups (u32 ho_index)
148 tls_main_t *tm = &tls_main;
149 vec_add1 (tm->postponed_ho_free, ho_index);
153 tls_ctx_ho_try_free (u32 ho_index)
157 ctx = tls_ctx_half_open_get (ho_index);
158 /* Probably tcp connected just before tcp establish timeout and
159 * worker that owns established session has not yet received
160 * @ref tls_session_connected_cb */
161 if (!(ctx->flags & TLS_CONN_F_HO_DONE))
163 ctx->tls_session_handle = SESSION_INVALID_HANDLE;
164 tls_add_postponed_ho_cleanups (ho_index);
167 if (!(ctx->flags & TLS_CONN_F_NO_APP_SESSION))
168 session_half_open_delete_notify (&ctx->connection);
169 tls_ctx_half_open_free (ho_index);
173 tls_flush_postponed_ho_cleanups ()
175 tls_main_t *tm = &tls_main;
176 u32 *ho_indexp, *tmp;
178 tmp = tm->postponed_ho_free;
179 tm->postponed_ho_free = tm->ho_free_list;
180 tm->ho_free_list = tmp;
182 vec_foreach (ho_indexp, tm->ho_free_list)
183 tls_ctx_ho_try_free (*ho_indexp);
185 vec_reset_length (tm->ho_free_list);
189 tls_notify_app_enqueue (tls_ctx_t * ctx, session_t * app_session)
191 app_worker_t *app_wrk;
192 app_wrk = app_worker_get_if_valid (app_session->app_wrk_index);
193 if (PREDICT_TRUE (app_wrk != 0))
194 tls_add_app_q_evt (app_wrk, app_session);
198 tls_notify_app_accept (tls_ctx_t * ctx)
200 session_t *app_listener, *app_session;
201 app_worker_t *app_wrk;
205 lctx = tls_listener_ctx_get (ctx->listener_ctx_index);
206 app_listener = listen_session_get_from_handle (lctx->app_session_handle);
208 app_session = session_get (ctx->c_s_index, ctx->c_thread_index);
209 app_session->app_wrk_index = ctx->parent_app_wrk_index;
210 app_session->connection_index = ctx->tls_ctx_handle;
211 app_session->session_type = app_listener->session_type;
212 app_session->listener_handle = listen_session_get_handle (app_listener);
213 app_session->session_state = SESSION_STATE_ACCEPTING;
215 if ((rv = app_worker_init_accepted (app_session)))
217 TLS_DBG (1, "failed to allocate fifos");
218 session_free (app_session);
219 ctx->flags |= TLS_CONN_F_NO_APP_SESSION;
222 ctx->app_session_handle = session_handle (app_session);
223 ctx->parent_app_wrk_index = app_session->app_wrk_index;
224 app_wrk = app_worker_get (app_session->app_wrk_index);
225 return app_worker_accept_notify (app_wrk, app_session);
229 tls_notify_app_connected (tls_ctx_t * ctx, session_error_t err)
231 u32 parent_app_api_ctx;
232 session_t *app_session;
233 app_worker_t *app_wrk;
235 app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_index);
238 if (ctx->tls_type == TRANSPORT_PROTO_TLS)
239 session_free (session_get (ctx->c_s_index, ctx->c_thread_index));
240 ctx->flags |= TLS_CONN_F_NO_APP_SESSION;
246 /* Free app session pre-allocated when transport was established */
247 if (ctx->tls_type == TRANSPORT_PROTO_TLS)
248 session_free (session_get (ctx->c_s_index, ctx->c_thread_index));
249 ctx->flags |= TLS_CONN_F_NO_APP_SESSION;
253 /* For DTLS the app session is not preallocated because the underlying udp
254 * session might migrate to a different worker during the handshake */
255 if (ctx->tls_type == TRANSPORT_PROTO_DTLS)
258 /* Cleanup half-open session as we don't get notification from udp */
259 session_half_open_delete_notify (&ctx->connection);
260 app_session = session_alloc (ctx->c_thread_index);
261 app_session->session_state = SESSION_STATE_CREATED;
262 ctx->c_s_index = app_session->session_index;
264 session_type_from_proto_and_ip (TRANSPORT_PROTO_DTLS, ctx->tcp_is_ip4);
265 app_session->session_type = st;
266 app_session->connection_index = ctx->tls_ctx_handle;
270 app_session = session_get (ctx->c_s_index, ctx->c_thread_index);
273 app_session->app_wrk_index = ctx->parent_app_wrk_index;
274 app_session->opaque = ctx->parent_app_api_context;
276 if ((err = app_worker_init_connected (app_wrk, app_session)))
278 app_worker_connect_notify (app_wrk, 0, err, ctx->parent_app_api_context);
279 ctx->flags |= TLS_CONN_F_NO_APP_SESSION;
280 session_free (app_session);
284 app_session->session_state = SESSION_STATE_READY;
285 parent_app_api_ctx = ctx->parent_app_api_context;
286 ctx->app_session_handle = session_handle (app_session);
288 if (app_worker_connect_notify (app_wrk, app_session, SESSION_E_NONE,
291 TLS_DBG (1, "failed to notify app");
292 session_free (session_get (ctx->c_s_index, ctx->c_thread_index));
293 ctx->flags |= TLS_CONN_F_NO_APP_SESSION;
300 return app_worker_connect_notify (app_wrk, 0, err,
301 ctx->parent_app_api_context);
305 tls_ctx_parse_handle (u32 ctx_handle, u32 * ctx_index, u32 * engine_type)
307 *ctx_index = ctx_handle & TLS_IDX_MASK;
308 *engine_type = ctx_handle >> TLS_ENGINE_TYPE_SHIFT;
311 static inline crypto_engine_type_t
312 tls_get_engine_type (crypto_engine_type_t requested,
313 crypto_engine_type_t preferred)
315 if (requested != CRYPTO_ENGINE_NONE)
317 if (tls_vfts[requested].ctx_alloc)
319 return CRYPTO_ENGINE_NONE;
321 if (!tls_vfts[preferred].ctx_alloc)
322 return tls_get_available_engine ();
327 tls_ctx_alloc (crypto_engine_type_t engine_type)
330 ctx_index = tls_vfts[engine_type].ctx_alloc ();
331 return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
335 tls_ctx_alloc_w_thread (crypto_engine_type_t engine_type, u32 thread_index)
338 ctx_index = tls_vfts[engine_type].ctx_alloc_w_thread (thread_index);
339 return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
343 tls_ctx_attach (crypto_engine_type_t engine_type, u32 thread_index, void *ctx)
346 ctx_index = tls_vfts[engine_type].ctx_attach (thread_index, ctx);
347 return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
351 tls_ctx_detach (tls_ctx_t *ctx)
353 return tls_vfts[ctx->tls_ctx_engine].ctx_detach (ctx);
356 static inline tls_ctx_t *
357 tls_ctx_get (u32 ctx_handle)
359 u32 ctx_index, engine_type;
360 tls_ctx_parse_handle (ctx_handle, &ctx_index, &engine_type);
361 return tls_vfts[engine_type].ctx_get (ctx_index);
364 static inline tls_ctx_t *
365 tls_ctx_get_w_thread (u32 ctx_handle, u8 thread_index)
367 u32 ctx_index, engine_type;
368 tls_ctx_parse_handle (ctx_handle, &ctx_index, &engine_type);
369 return tls_vfts[engine_type].ctx_get_w_thread (ctx_index, thread_index);
373 tls_ctx_init_server (tls_ctx_t * ctx)
375 return tls_vfts[ctx->tls_ctx_engine].ctx_init_server (ctx);
379 tls_ctx_init_client (tls_ctx_t * ctx)
381 return tls_vfts[ctx->tls_ctx_engine].ctx_init_client (ctx);
385 tls_ctx_write (tls_ctx_t * ctx, session_t * app_session,
386 transport_send_params_t * sp)
390 sp->max_burst_size = sp->max_burst_size * TRANSPORT_PACER_MIN_MSS;
391 n_wrote = tls_vfts[ctx->tls_ctx_engine].ctx_write (ctx, app_session, sp);
392 sp->bytes_dequeued = n_wrote;
393 return n_wrote > 0 ? clib_max (n_wrote / TRANSPORT_PACER_MIN_MSS, 1) : 0;
397 tls_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
399 return tls_vfts[ctx->tls_ctx_engine].ctx_read (ctx, tls_session);
403 tls_ctx_transport_close (tls_ctx_t * ctx)
405 return tls_vfts[ctx->tls_ctx_engine].ctx_transport_close (ctx);
409 tls_ctx_transport_reset (tls_ctx_t *ctx)
411 return tls_vfts[ctx->tls_ctx_engine].ctx_transport_reset (ctx);
415 tls_ctx_app_close (tls_ctx_t * ctx)
417 return tls_vfts[ctx->tls_ctx_engine].ctx_app_close (ctx);
421 tls_ctx_free (tls_ctx_t * ctx)
423 tls_vfts[ctx->tls_ctx_engine].ctx_free (ctx);
427 tls_ctx_handshake_is_over (tls_ctx_t * ctx)
429 return tls_vfts[ctx->tls_ctx_engine].ctx_handshake_is_over (ctx);
433 tls_reinit_ca_chain (crypto_engine_type_t tls_engine_id)
435 return tls_vfts[tls_engine_id].ctx_reinit_cachain ();
439 tls_notify_app_io_error (tls_ctx_t *ctx)
441 ASSERT (tls_ctx_handshake_is_over (ctx));
443 session_transport_reset_notify (&ctx->connection);
444 session_transport_closed_notify (&ctx->connection);
445 tls_disconnect_transport (ctx);
449 tls_session_reset_callback (session_t *ts)
453 ctx = tls_ctx_get_w_thread (ts->opaque, ts->thread_index);
454 ctx->flags |= TLS_CONN_F_PASSIVE_CLOSE;
455 tls_ctx_transport_reset (ctx);
459 tls_session_cleanup_ho (session_t *s)
461 /* session opaque stores the opaque passed on connect */
462 tls_ctx_ho_try_free (s->opaque);
466 tls_add_segment_callback (u32 client_index, u64 segment_handle)
468 /* No-op for builtin */
473 tls_del_segment_callback (u32 client_index, u64 segment_handle)
479 tls_session_disconnect_callback (session_t * tls_session)
483 TLS_DBG (1, "TCP disconnecting handle %x session %u", tls_session->opaque,
484 tls_session->session_index);
486 ASSERT (tls_session->thread_index == vlib_get_thread_index ()
487 || vlib_thread_is_main_w_barrier ());
489 ctx = tls_ctx_get_w_thread (tls_session->opaque, tls_session->thread_index);
490 ctx->flags |= TLS_CONN_F_PASSIVE_CLOSE;
491 tls_ctx_transport_close (ctx);
495 tls_session_accept_callback (session_t * tls_session)
497 session_t *tls_listener, *app_session;
498 tls_ctx_t *lctx, *ctx;
502 listen_session_get_from_handle (tls_session->listener_handle);
503 lctx = tls_listener_ctx_get (tls_listener->opaque);
505 ctx_handle = tls_ctx_alloc (lctx->tls_ctx_engine);
506 ctx = tls_ctx_get (ctx_handle);
507 clib_memcpy (ctx, lctx, sizeof (*lctx));
508 ctx->c_thread_index = vlib_get_thread_index ();
509 ctx->tls_ctx_handle = ctx_handle;
510 tls_session->session_state = SESSION_STATE_READY;
511 tls_session->opaque = ctx_handle;
512 ctx->tls_session_handle = session_handle (tls_session);
513 ctx->listener_ctx_index = tls_listener->opaque;
514 ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
515 ctx->ckpair_index = lctx->ckpair_index;
517 /* Preallocate app session. Avoids allocating a session post handshake
518 * on tls_session rx and potentially invalidating the session pool */
519 app_session = session_alloc (ctx->c_thread_index);
520 app_session->session_state = SESSION_STATE_CREATED;
521 app_session->session_type =
522 session_type_from_proto_and_ip (TRANSPORT_PROTO_TLS, ctx->tcp_is_ip4);
523 app_session->connection_index = ctx->tls_ctx_handle;
524 app_session->app_wrk_index = APP_INVALID_INDEX;
525 ctx->c_s_index = app_session->session_index;
527 TLS_DBG (1, "Accept on listener %u new connection [%u]%x",
528 tls_listener->opaque, vlib_get_thread_index (), ctx_handle);
530 if (tls_ctx_init_server (ctx))
532 /* Do not free ctx yet, in case we have pending rx events */
533 session_free (app_session);
534 ctx->flags |= TLS_CONN_F_NO_APP_SESSION;
535 tls_disconnect_transport (ctx);
542 tls_app_rx_callback (session_t *ts)
546 /* DTLS session migrating, wait for next notification */
547 if (PREDICT_FALSE (ts->flags & SESSION_F_IS_MIGRATING))
550 /* Read rescheduled but underlying transport deleted now */
551 if (PREDICT_FALSE ((ts->session_state == SESSION_STATE_TRANSPORT_DELETED)))
554 ctx = tls_ctx_get (ts->opaque);
555 if (PREDICT_FALSE ((ctx->flags & TLS_CONN_F_NO_APP_SESSION) ||
556 (ctx->flags & TLS_CONN_F_APP_CLOSED)))
558 TLS_DBG (1, "Local App closed");
561 tls_ctx_read (ctx, ts);
566 tls_app_tx_callback (session_t * tls_session)
570 ctx = tls_ctx_get (tls_session->opaque);
571 transport_connection_reschedule (&ctx->connection);
577 tls_session_connected_cb (u32 tls_app_index, u32 ho_ctx_index,
578 session_t *tls_session, session_error_t err)
580 session_t *app_session;
581 tls_ctx_t *ho_ctx, *ctx;
585 ho_ctx = tls_ctx_half_open_get (ho_ctx_index);
587 ctx_handle = tls_ctx_alloc (ho_ctx->tls_ctx_engine);
588 ctx = tls_ctx_get (ctx_handle);
589 clib_memcpy_fast (ctx, ho_ctx, sizeof (*ctx));
591 /* Half-open freed on tcp half-open cleanup notification */
592 __atomic_fetch_or (&ho_ctx->flags, TLS_CONN_F_HO_DONE, __ATOMIC_RELEASE);
594 ctx->c_thread_index = vlib_get_thread_index ();
595 ctx->tls_ctx_handle = ctx_handle;
596 ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
598 TLS_DBG (1, "TCP connect for %u returned %u. New connection [%u]%x",
599 ho_ctx_index, err, vlib_get_thread_index (),
600 (ctx) ? ctx_handle : ~0);
602 ctx->tls_session_handle = session_handle (tls_session);
603 tls_session->opaque = ctx_handle;
604 tls_session->session_state = SESSION_STATE_READY;
606 /* Preallocate app session. Avoids allocating a session post handshake
607 * on tls_session rx and potentially invalidating the session pool */
608 app_session = session_alloc (ctx->c_thread_index);
609 app_session->session_state = SESSION_STATE_CREATED;
610 ctx->c_s_index = app_session->session_index;
611 st = session_type_from_proto_and_ip (TRANSPORT_PROTO_TLS, ctx->tcp_is_ip4);
612 app_session->session_type = st;
613 app_session->connection_index = ctx->tls_ctx_handle;
615 if (tls_ctx_init_client (ctx))
617 tls_notify_app_connected (ctx, SESSION_E_TLS_HANDSHAKE);
618 tls_disconnect_transport (ctx);
625 dtls_session_connected_cb (u32 app_wrk_index, u32 ctx_handle, session_t *us,
630 ctx = tls_ctx_get_w_thread (ctx_handle, transport_cl_thread ());
632 ctx->tls_session_handle = session_handle (us);
633 ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
634 us->opaque = ctx_handle;
636 /* We don't preallocate the app session because the udp session might
637 * actually migrate to a different worker at the end of the handshake */
639 return tls_ctx_init_client (ctx);
643 tls_session_connected_callback (u32 tls_app_index, u32 ho_ctx_index,
644 session_t *tls_session, session_error_t err)
648 app_worker_t *app_wrk;
652 ho_ctx = tls_ctx_half_open_get (ho_ctx_index);
653 ho_ctx->flags |= TLS_CONN_F_HO_DONE;
654 app_wrk = app_worker_get_if_valid (ho_ctx->parent_app_wrk_index);
657 api_context = ho_ctx->parent_app_api_context;
658 app_worker_connect_notify (app_wrk, 0, err, api_context);
664 if (session_get_transport_proto (tls_session) == TRANSPORT_PROTO_TCP)
665 return tls_session_connected_cb (tls_app_index, ho_ctx_index, tls_session,
668 return dtls_session_connected_cb (tls_app_index, ho_ctx_index, tls_session,
673 tls_app_session_cleanup (session_t * s, session_cleanup_ntf_t ntf)
677 if (ntf == SESSION_CLEANUP_TRANSPORT)
679 /* Allow cleanup of tcp session */
680 if (s->session_state == SESSION_STATE_TRANSPORT_DELETED)
685 ctx = tls_ctx_get (s->opaque);
686 if (!(ctx->flags & TLS_CONN_F_NO_APP_SESSION))
687 session_transport_delete_notify (&ctx->connection);
692 dtls_migrate_ctx (void *arg)
694 tls_ctx_t *ctx = (tls_ctx_t *) arg;
695 u32 ctx_handle, thread_index;
698 thread_index = session_thread_from_handle (ctx->tls_session_handle);
699 ASSERT (thread_index == vlib_get_thread_index ());
701 ctx_handle = tls_ctx_attach (ctx->tls_ctx_engine, thread_index, ctx);
702 ctx = tls_ctx_get_w_thread (ctx_handle, thread_index);
703 ctx->tls_ctx_handle = ctx_handle;
705 us = session_get_from_handle (ctx->tls_session_handle);
706 us->opaque = ctx_handle;
707 us->flags &= ~SESSION_F_IS_MIGRATING;
709 /* Probably the app detached while the session was migrating. Cleanup */
710 if (session_half_open_migrated_notify (&ctx->connection))
712 ctx->flags |= TLS_CONN_F_NO_APP_SESSION;
713 tls_disconnect (ctx->tls_ctx_handle, vlib_get_thread_index ());
717 if (svm_fifo_max_dequeue (us->tx_fifo))
718 session_send_io_evt_to_thread (us->tx_fifo, SESSION_IO_EVT_TX);
722 dtls_session_migrate_callback (session_t *us, session_handle_t new_sh)
724 u32 new_thread = session_thread_from_handle (new_sh);
725 tls_ctx_t *ctx, *cloned_ctx;
727 /* Migrate dtls context to new thread */
728 ctx = tls_ctx_get_w_thread (us->opaque, us->thread_index);
729 ctx->tls_session_handle = new_sh;
730 cloned_ctx = tls_ctx_detach (ctx);
731 ctx->flags |= TLS_CONN_F_MIGRATED;
732 session_half_open_migrate_notify (&ctx->connection);
734 session_send_rpc_evt_to_thread (new_thread, dtls_migrate_ctx,
735 (void *) cloned_ctx);
741 tls_session_transport_closed_callback (session_t *ts)
745 ctx = tls_ctx_get_w_thread (ts->opaque, ts->thread_index);
746 if (!(ctx->flags & TLS_CONN_F_NO_APP_SESSION))
747 session_transport_closed_notify (&ctx->connection);
750 static session_cb_vft_t tls_app_cb_vft = {
751 .session_accept_callback = tls_session_accept_callback,
752 .session_disconnect_callback = tls_session_disconnect_callback,
753 .session_connected_callback = tls_session_connected_callback,
754 .session_reset_callback = tls_session_reset_callback,
755 .session_transport_closed_callback = tls_session_transport_closed_callback,
756 .half_open_cleanup_callback = tls_session_cleanup_ho,
757 .add_segment_callback = tls_add_segment_callback,
758 .del_segment_callback = tls_del_segment_callback,
759 .builtin_app_rx_callback = tls_app_rx_callback,
760 .builtin_app_tx_callback = tls_app_tx_callback,
761 .session_migrate_callback = dtls_session_migrate_callback,
762 .session_cleanup_callback = tls_app_session_cleanup,
766 tls_connect (transport_endpoint_cfg_t * tep)
768 vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs;
769 transport_endpt_crypto_cfg_t *ccfg;
770 crypto_engine_type_t engine_type;
771 session_endpoint_cfg_t *sep;
772 tls_main_t *tm = &tls_main;
773 app_worker_t *app_wrk;
779 sep = (session_endpoint_cfg_t *) tep;
781 return SESSION_E_NOEXTCFG;
783 app_wrk = app_worker_get (sep->app_wrk_index);
784 app = application_get (app_wrk->app_index);
786 ccfg = &sep->ext_cfg->crypto;
787 engine_type = tls_get_engine_type (ccfg->crypto_engine, app->tls_engine);
788 if (engine_type == CRYPTO_ENGINE_NONE)
790 clib_warning ("No tls engine_type available");
791 return SESSION_E_NOCRYPTOENG;
794 ctx_index = tls_ctx_half_open_alloc ();
795 ctx = tls_ctx_half_open_get (ctx_index);
796 ctx->parent_app_wrk_index = sep->app_wrk_index;
797 ctx->parent_app_api_context = sep->opaque;
798 ctx->tcp_is_ip4 = sep->is_ip4;
799 ctx->tls_type = sep->transport_proto;
800 ctx->ckpair_index = ccfg->ckpair_index;
801 ctx->c_proto = TRANSPORT_PROTO_TLS;
802 ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
803 if (ccfg->hostname[0])
805 ctx->srv_hostname = format (0, "%s", ccfg->hostname);
806 vec_terminate_c_string (ctx->srv_hostname);
809 ctx->tls_ctx_engine = engine_type;
811 clib_memcpy_fast (&cargs->sep, sep, sizeof (session_endpoint_t));
812 cargs->sep.transport_proto = TRANSPORT_PROTO_TCP;
813 cargs->app_index = tm->app_index;
814 cargs->api_context = ctx_index;
815 cargs->sep_ext.ns_index = app->ns_index;
816 if ((rv = vnet_connect (cargs)))
818 tls_ctx_half_open_free (ctx_index);
822 /* Track half-open tcp session in case we need to clean it up */
823 ctx->tls_session_handle = cargs->sh;
825 TLS_DBG (1, "New connect request %u engine %d", ctx_index, engine_type);
830 tls_disconnect (u32 ctx_handle, u32 thread_index)
834 TLS_DBG (1, "Disconnecting %x", ctx_handle);
836 ctx = tls_ctx_get (ctx_handle);
837 ctx->flags |= TLS_CONN_F_APP_CLOSED;
838 tls_ctx_app_close (ctx);
842 tls_start_listen (u32 app_listener_index, transport_endpoint_cfg_t *tep)
844 vnet_listen_args_t _bargs, *args = &_bargs;
845 transport_endpt_crypto_cfg_t *ccfg;
846 app_worker_t *app_wrk;
847 tls_main_t *tm = &tls_main;
848 session_handle_t tls_al_handle;
849 session_endpoint_cfg_t *sep;
850 session_t *tls_listener;
851 session_t *app_listener;
852 crypto_engine_type_t engine_type;
859 sep = (session_endpoint_cfg_t *) tep;
861 return SESSION_E_NOEXTCFG;
863 app_wrk = app_worker_get (sep->app_wrk_index);
864 app = application_get (app_wrk->app_index);
866 ccfg = &sep->ext_cfg->crypto;
867 engine_type = tls_get_engine_type (ccfg->crypto_engine, app->tls_engine);
868 if (engine_type == CRYPTO_ENGINE_NONE)
870 clib_warning ("No tls engine_type available");
871 return SESSION_E_NOCRYPTOENG;
874 clib_memset (args, 0, sizeof (*args));
875 args->app_index = tm->app_index;
876 args->sep_ext = *sep;
877 args->sep_ext.ns_index = app->ns_index;
878 args->sep_ext.transport_proto = TRANSPORT_PROTO_TCP;
879 if (sep->transport_proto == TRANSPORT_PROTO_DTLS)
881 args->sep_ext.transport_proto = TRANSPORT_PROTO_UDP;
882 args->sep_ext.transport_flags = TRANSPORT_CFG_F_CONNECTED;
884 if ((rv = vnet_listen (args)))
887 lctx_index = tls_listener_ctx_alloc ();
888 tls_al_handle = args->handle;
889 al = app_listener_get_w_handle (tls_al_handle);
890 tls_listener = app_listener_get_session (al);
891 tls_listener->opaque = lctx_index;
893 app_listener = listen_session_get (app_listener_index);
895 lctx = tls_listener_ctx_get (lctx_index);
896 lctx->parent_app_wrk_index = sep->app_wrk_index;
897 lctx->tls_session_handle = tls_al_handle;
898 lctx->app_session_handle = listen_session_get_handle (app_listener);
899 lctx->tcp_is_ip4 = sep->is_ip4;
900 lctx->tls_ctx_engine = engine_type;
901 lctx->tls_type = sep->transport_proto;
902 lctx->ckpair_index = ccfg->ckpair_index;
903 lctx->c_s_index = app_listener_index;
904 lctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
906 if (tls_vfts[engine_type].ctx_start_listen (lctx))
908 vnet_unlisten_args_t a = {
909 .handle = lctx->tls_session_handle,
910 .app_index = tls_main.app_index,
913 if ((vnet_unlisten (&a)))
914 clib_warning ("unlisten returned");
915 tls_listener_ctx_free (lctx);
916 lctx_index = SESSION_INVALID_INDEX;
919 TLS_DBG (1, "Started listening %d, engine type %d", lctx_index,
925 tls_stop_listen (u32 lctx_index)
927 session_endpoint_t sep = SESSION_ENDPOINT_NULL;
928 crypto_engine_type_t engine_type;
929 transport_connection_t *lc;
934 lctx = tls_listener_ctx_get (lctx_index);
936 /* Cleanup listener from session lookup table */
937 ls = session_get_from_handle (lctx->tls_session_handle);
938 lc = session_get_transport (ls);
940 sep.fib_index = lc->fib_index;
941 sep.port = lc->lcl_port;
942 sep.is_ip4 = lc->is_ip4;
943 sep.transport_proto = lctx->tls_type;
944 clib_memcpy (&sep.ip, &lc->lcl_ip, sizeof (lc->lcl_ip));
945 session_lookup_del_session_endpoint2 (&sep);
947 vnet_unlisten_args_t a = {
948 .handle = lctx->tls_session_handle,
949 .app_index = tls_main.app_index,
950 .wrk_map_index = 0 /* default wrk */
952 if ((rv = vnet_unlisten (&a)))
953 clib_warning ("unlisten returned %d", rv);
955 engine_type = lctx->tls_ctx_engine;
956 tls_vfts[engine_type].ctx_stop_listen (lctx);
958 tls_listener_ctx_free (lctx);
962 transport_connection_t *
963 tls_connection_get (u32 ctx_index, u32 thread_index)
966 ctx = tls_ctx_get_w_thread (ctx_index, thread_index);
967 return &ctx->connection;
970 transport_connection_t *
971 tls_listener_get (u32 listener_index)
974 ctx = tls_listener_ctx_get (listener_index);
975 return &ctx->connection;
978 static transport_connection_t *
979 tls_half_open_get (u32 ho_index)
982 ctx = tls_ctx_half_open_get (ho_index);
983 return &ctx->connection;
987 tls_cleanup_ho (u32 ho_index)
992 ctx = tls_ctx_half_open_get (ho_index);
993 /* Already pending cleanup */
994 if (ctx->tls_session_handle == SESSION_INVALID_HANDLE)
996 ASSERT (ctx->flags & TLS_CONN_F_HO_DONE);
997 ctx->flags |= TLS_CONN_F_NO_APP_SESSION;
1001 s = session_get_from_handle (ctx->tls_session_handle);
1002 /* If no pending cleanup notification, force cleanup now. Otherwise,
1003 * wait for cleanup notification and set no app session on ctx */
1004 if (s->session_state != SESSION_STATE_TRANSPORT_DELETED)
1006 session_cleanup_half_open (ctx->tls_session_handle);
1007 tls_ctx_half_open_free (ho_index);
1010 ctx->flags |= TLS_CONN_F_NO_APP_SESSION;
1014 tls_custom_tx_callback (void *session, transport_send_params_t * sp)
1016 session_t *as = (session_t *) session;
1019 if (PREDICT_FALSE (as->session_state >= SESSION_STATE_TRANSPORT_CLOSED ||
1020 as->session_state <= SESSION_STATE_ACCEPTING))
1022 sp->flags |= TRANSPORT_SND_F_DESCHED;
1026 ctx = tls_ctx_get (as->connection_index);
1027 return tls_ctx_write (ctx, as, sp);
1031 format_tls_ctx (u8 * s, va_list * args)
1033 u32 tcp_si, tcp_ti, ctx_index, ctx_engine;
1034 tls_ctx_t *ctx = va_arg (*args, tls_ctx_t *);
1037 proto = ctx->tls_type == TRANSPORT_PROTO_TLS ? "TLS" : "DTLS";
1038 session_parse_handle (ctx->tls_session_handle, &tcp_si, &tcp_ti);
1039 tls_ctx_parse_handle (ctx->tls_ctx_handle, &ctx_index, &ctx_engine);
1041 format (s, "[%d:%d][%s] app_wrk %u index %u engine %u ts %d:%d",
1042 ctx->c_thread_index, ctx->c_s_index, proto,
1043 ctx->parent_app_wrk_index, ctx_index, ctx_engine, tcp_ti, tcp_si);
1049 format_tls_listener_ctx (u8 * s, va_list * args)
1051 session_t *tls_listener;
1056 ctx = va_arg (*args, tls_ctx_t *);
1058 proto = ctx->tls_type == TRANSPORT_PROTO_TLS ? "TLS" : "DTLS";
1059 al = app_listener_get_w_handle (ctx->tls_session_handle);
1060 tls_listener = app_listener_get_session (al);
1061 s = format (s, "[%d:%d][%s] app_wrk %u engine %u ts %d:%d",
1062 ctx->c_thread_index, ctx->c_s_index, proto,
1063 ctx->parent_app_wrk_index, ctx->tls_ctx_engine,
1064 tls_listener->thread_index, tls_listener->session_index);
1070 format_tls_ctx_state (u8 * s, va_list * args)
1075 ctx = va_arg (*args, tls_ctx_t *);
1076 ts = session_get (ctx->c_s_index, ctx->c_thread_index);
1077 if (ts->session_state == SESSION_STATE_LISTENING)
1078 s = format (s, "%s", "LISTEN");
1081 if (ts->session_state >= SESSION_STATE_TRANSPORT_CLOSED)
1082 s = format (s, "%s", "CLOSED");
1083 else if (ts->session_state == SESSION_STATE_APP_CLOSED)
1084 s = format (s, "%s", "APP-CLOSED");
1085 else if (ts->session_state >= SESSION_STATE_TRANSPORT_CLOSING)
1086 s = format (s, "%s", "CLOSING");
1087 else if (tls_ctx_handshake_is_over (ctx))
1088 s = format (s, "%s", "ESTABLISHED");
1090 s = format (s, "%s", "HANDSHAKE");
1097 format_tls_connection (u8 * s, va_list * args)
1099 u32 ctx_index = va_arg (*args, u32);
1100 u32 thread_index = va_arg (*args, u32);
1101 u32 verbose = va_arg (*args, u32);
1104 ctx = tls_ctx_get_w_thread (ctx_index, thread_index);
1108 s = format (s, "%-" SESSION_CLI_ID_LEN "U", format_tls_ctx, ctx);
1111 s = format (s, "%-" SESSION_CLI_STATE_LEN "U", format_tls_ctx_state,
1114 s = format (s, "\n");
1120 format_tls_listener (u8 * s, va_list * args)
1122 u32 tc_index = va_arg (*args, u32);
1123 u32 __clib_unused thread_index = va_arg (*args, u32);
1124 u32 verbose = va_arg (*args, u32);
1125 tls_ctx_t *ctx = tls_listener_ctx_get (tc_index);
1127 s = format (s, "%-" SESSION_CLI_ID_LEN "U", format_tls_listener_ctx, ctx);
1129 s = format (s, "%-" SESSION_CLI_STATE_LEN "U", format_tls_ctx_state, ctx);
1134 format_tls_half_open (u8 * s, va_list * args)
1136 u32 ho_index = va_arg (*args, u32);
1137 u32 __clib_unused thread_index = va_arg (*args, u32);
1138 u32 __clib_unused verbose = va_arg (*args, u32);
1142 ho_ctx = tls_ctx_half_open_get (ho_index);
1144 tcp_ho = session_get_from_handle (ho_ctx->tls_session_handle);
1145 s = format (s, "[%d:%d][%s] half-open app_wrk %u engine %u ts %d:%d",
1146 ho_ctx->c_thread_index, ho_ctx->c_s_index, "TLS",
1147 ho_ctx->parent_app_wrk_index, ho_ctx->tls_ctx_engine,
1148 tcp_ho->thread_index, tcp_ho->session_index);
1154 tls_transport_endpoint_get (u32 ctx_handle, u32 thread_index,
1155 transport_endpoint_t * tep, u8 is_lcl)
1157 tls_ctx_t *ctx = tls_ctx_get_w_thread (ctx_handle, thread_index);
1160 ts = session_get_from_handle (ctx->tls_session_handle);
1161 if (ts && ts->session_state < SESSION_STATE_TRANSPORT_DELETED)
1162 session_get_endpoint (ts, tep, is_lcl);
1166 tls_transport_listener_endpoint_get (u32 ctx_handle,
1167 transport_endpoint_t * tep, u8 is_lcl)
1169 session_t *tls_listener;
1171 tls_ctx_t *ctx = tls_listener_ctx_get (ctx_handle);
1173 al = app_listener_get_w_handle (ctx->tls_session_handle);
1174 tls_listener = app_listener_get_session (al);
1175 session_get_endpoint (tls_listener, tep, is_lcl);
1178 static clib_error_t *
1179 tls_enable (vlib_main_t * vm, u8 is_en)
1181 vnet_app_detach_args_t _da, *da = &_da;
1182 vnet_app_attach_args_t _a, *a = &_a;
1183 u64 options[APP_OPTIONS_N_OPTIONS];
1184 tls_main_t *tm = &tls_main;
1185 u32 fifo_size = 512 << 10;
1189 da->app_index = tm->app_index;
1190 da->api_client_index = APP_INVALID_INDEX;
1191 vnet_application_detach (da);
1195 fifo_size = tm->fifo_size ? tm->fifo_size : fifo_size;
1197 clib_memset (a, 0, sizeof (*a));
1198 clib_memset (options, 0, sizeof (options));
1200 a->session_cb_vft = &tls_app_cb_vft;
1201 a->api_client_index = APP_INVALID_INDEX;
1202 a->options = options;
1203 a->name = format (0, "tls");
1204 a->options[APP_OPTIONS_SEGMENT_SIZE] = tm->first_seg_size;
1205 a->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = tm->add_seg_size;
1206 a->options[APP_OPTIONS_RX_FIFO_SIZE] = fifo_size;
1207 a->options[APP_OPTIONS_TX_FIFO_SIZE] = fifo_size;
1208 a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN;
1209 a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE;
1210 a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_IS_TRANSPORT_APP;
1212 if (vnet_application_attach (a))
1214 clib_warning ("failed to attach tls app");
1215 return clib_error_return (0, "failed to attach tls app");
1218 tm->app_index = a->app_index;
1224 static const transport_proto_vft_t tls_proto = {
1225 .enable = tls_enable,
1226 .connect = tls_connect,
1227 .close = tls_disconnect,
1228 .start_listen = tls_start_listen,
1229 .stop_listen = tls_stop_listen,
1230 .get_connection = tls_connection_get,
1231 .get_listener = tls_listener_get,
1232 .get_half_open = tls_half_open_get,
1233 .cleanup_ho = tls_cleanup_ho,
1234 .custom_tx = tls_custom_tx_callback,
1235 .format_connection = format_tls_connection,
1236 .format_half_open = format_tls_half_open,
1237 .format_listener = format_tls_listener,
1238 .get_transport_endpoint = tls_transport_endpoint_get,
1239 .get_transport_listener_endpoint = tls_transport_listener_endpoint_get,
1240 .transport_options = {
1243 .tx_type = TRANSPORT_TX_INTERNAL,
1244 .service_type = TRANSPORT_SERVICE_VC,
1249 dtls_connect (transport_endpoint_cfg_t *tep)
1251 vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs;
1252 transport_endpt_crypto_cfg_t *ccfg;
1253 crypto_engine_type_t engine_type;
1254 session_endpoint_cfg_t *sep;
1255 tls_main_t *tm = &tls_main;
1256 app_worker_t *app_wrk;
1262 sep = (session_endpoint_cfg_t *) tep;
1266 app_wrk = app_worker_get (sep->app_wrk_index);
1267 app = application_get (app_wrk->app_index);
1269 ccfg = &sep->ext_cfg->crypto;
1270 engine_type = tls_get_engine_type (ccfg->crypto_engine, app->tls_engine);
1271 if (engine_type == CRYPTO_ENGINE_NONE)
1273 clib_warning ("No tls engine_type available");
1277 ctx_handle = tls_ctx_alloc_w_thread (engine_type, transport_cl_thread ());
1278 ctx = tls_ctx_get_w_thread (ctx_handle, transport_cl_thread ());
1279 ctx->parent_app_wrk_index = sep->app_wrk_index;
1280 ctx->parent_app_api_context = sep->opaque;
1281 ctx->tcp_is_ip4 = sep->is_ip4;
1282 ctx->ckpair_index = ccfg->ckpair_index;
1283 ctx->tls_type = sep->transport_proto;
1284 ctx->tls_ctx_handle = ctx_handle;
1285 ctx->c_proto = TRANSPORT_PROTO_DTLS;
1286 ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
1287 if (ccfg->hostname[0])
1289 ctx->srv_hostname = format (0, "%s", ccfg->hostname);
1290 vec_terminate_c_string (ctx->srv_hostname);
1293 ctx->tls_ctx_engine = engine_type;
1295 clib_memcpy_fast (&cargs->sep, sep, sizeof (session_endpoint_t));
1296 cargs->sep.transport_proto = TRANSPORT_PROTO_UDP;
1297 cargs->app_index = tm->app_index;
1298 cargs->api_context = ctx_handle;
1299 cargs->sep_ext.ns_index = app->ns_index;
1300 cargs->sep_ext.transport_flags = TRANSPORT_CFG_F_CONNECTED;
1301 if ((rv = vnet_connect (cargs)))
1304 TLS_DBG (1, "New DTLS connect request %x engine %d", ctx_handle,
1309 static transport_connection_t *
1310 dtls_half_open_get (u32 ho_index)
1313 ho_ctx = tls_ctx_get_w_thread (ho_index, transport_cl_thread ());
1314 return &ho_ctx->connection;
1318 dtls_cleanup_callback (u32 ctx_index, u32 thread_index)
1324 dtls_cleanup_ho (u32 ho_index)
1327 ctx = tls_ctx_get_w_thread (ho_index, transport_cl_thread ());
1332 format_dtls_half_open (u8 *s, va_list *args)
1334 u32 ho_index = va_arg (*args, u32);
1335 u32 __clib_unused thread_index = va_arg (*args, u32);
1339 ho_ctx = tls_ctx_get_w_thread (ho_index, transport_cl_thread ());
1341 us = session_get_from_handle (ho_ctx->tls_session_handle);
1342 s = format (s, "[%d:%d][%s] half-open app_wrk %u engine %u us %d:%d",
1343 ho_ctx->c_thread_index, ho_ctx->c_s_index, "DTLS",
1344 ho_ctx->parent_app_wrk_index, ho_ctx->tls_ctx_engine,
1345 us->thread_index, us->session_index);
1350 static const transport_proto_vft_t dtls_proto = {
1352 .connect = dtls_connect,
1353 .close = tls_disconnect,
1354 .start_listen = tls_start_listen,
1355 .stop_listen = tls_stop_listen,
1356 .get_connection = tls_connection_get,
1357 .get_listener = tls_listener_get,
1358 .get_half_open = dtls_half_open_get,
1359 .custom_tx = tls_custom_tx_callback,
1360 .cleanup = dtls_cleanup_callback,
1361 .cleanup_ho = dtls_cleanup_ho,
1362 .format_connection = format_tls_connection,
1363 .format_half_open = format_dtls_half_open,
1364 .format_listener = format_tls_listener,
1365 .get_transport_endpoint = tls_transport_endpoint_get,
1366 .get_transport_listener_endpoint = tls_transport_listener_endpoint_get,
1367 .transport_options = {
1370 .tx_type = TRANSPORT_TX_INTERNAL,
1371 .service_type = TRANSPORT_SERVICE_VC,
1376 tls_register_engine (const tls_engine_vft_t * vft, crypto_engine_type_t type)
1378 vec_validate (tls_vfts, type);
1379 tls_vfts[type] = *vft;
1382 static clib_error_t *
1383 tls_init (vlib_main_t * vm)
1385 vlib_thread_main_t *vtm = vlib_get_thread_main ();
1386 tls_main_t *tm = &tls_main;
1389 num_threads = 1 /* main thread */ + vtm->n_threads;
1391 if (!tm->ca_cert_path)
1392 tm->ca_cert_path = TLS_CA_CERT_PATH;
1394 vec_validate (tm->rx_bufs, num_threads - 1);
1395 vec_validate (tm->tx_bufs, num_threads - 1);
1397 tm->first_seg_size = 32 << 20;
1398 tm->add_seg_size = 256 << 20;
1400 transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto,
1401 FIB_PROTOCOL_IP4, ~0);
1402 transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto,
1403 FIB_PROTOCOL_IP6, ~0);
1405 transport_register_protocol (TRANSPORT_PROTO_DTLS, &dtls_proto,
1406 FIB_PROTOCOL_IP4, ~0);
1407 transport_register_protocol (TRANSPORT_PROTO_DTLS, &dtls_proto,
1408 FIB_PROTOCOL_IP6, ~0);
1412 VLIB_INIT_FUNCTION (tls_init);
1414 static clib_error_t *
1415 tls_config_fn (vlib_main_t * vm, unformat_input_t * input)
1417 tls_main_t *tm = &tls_main;
1419 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1421 if (unformat (input, "use-test-cert-in-ca"))
1422 tm->use_test_cert_in_ca = 1;
1423 else if (unformat (input, "ca-cert-path %s", &tm->ca_cert_path))
1425 else if (unformat (input, "first-segment-size %U", unformat_memory_size,
1426 &tm->first_seg_size))
1428 else if (unformat (input, "add-segment-size %U", unformat_memory_size,
1431 else if (unformat (input, "fifo-size %U", unformat_memory_size, &tmp))
1433 if (tmp >= 0x100000000ULL)
1435 return clib_error_return
1436 (0, "fifo-size %llu (0x%llx) too large", tmp, tmp);
1438 tm->fifo_size = tmp;
1441 return clib_error_return (0, "unknown input `%U'",
1442 format_unformat_error, input);
1447 VLIB_CONFIG_FUNCTION (tls_config_fn, "tls");
1450 vnet_tls_get_main (void)
1456 * fd.io coding-style-patch-verification: ON
1459 * eval: (c-set-style "gnu")