| /* |
| * Copyright (c) 2018-2019 Cisco and/or its affiliates. |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <vnet/session/application_interface.h> |
| #include <vppinfra/lock.h> |
| #include <vnet/tls/tls.h> |
| |
| static tls_main_t tls_main; |
| static tls_engine_vft_t *tls_vfts; |
| |
| #define TLS_INVALID_HANDLE ~0 |
| #define TLS_IDX_MASK 0x00FFFFFF |
| #define TLS_ENGINE_TYPE_SHIFT 28 |
| |
| void tls_disconnect (u32 ctx_handle, u32 thread_index); |
| |
| void |
| tls_disconnect_transport (tls_ctx_t * ctx) |
| { |
| vnet_disconnect_args_t a = { |
| .handle = ctx->tls_session_handle, |
| .app_index = tls_main.app_index, |
| }; |
| |
| if (vnet_disconnect_session (&a)) |
| clib_warning ("disconnect returned"); |
| } |
| |
| crypto_engine_type_t |
| tls_get_available_engine (void) |
| { |
| int i; |
| for (i = 0; i < vec_len (tls_vfts); i++) |
| { |
| if (tls_vfts[i].ctx_alloc) |
| return i; |
| } |
| return CRYPTO_ENGINE_NONE; |
| } |
| |
| int |
| tls_add_vpp_q_rx_evt (session_t * s) |
| { |
| if (svm_fifo_set_event (s->rx_fifo)) |
| session_send_io_evt_to_thread (s->rx_fifo, SESSION_IO_EVT_RX); |
| return 0; |
| } |
| |
| int |
| tls_add_vpp_q_builtin_rx_evt (session_t * s) |
| { |
| session_enqueue_notify (s); |
| return 0; |
| } |
| |
| int |
| tls_add_vpp_q_tx_evt (session_t * s) |
| { |
| if (svm_fifo_set_event (s->tx_fifo)) |
| session_send_io_evt_to_thread (s->tx_fifo, SESSION_IO_EVT_TX); |
| return 0; |
| } |
| |
| static inline int |
| tls_add_app_q_evt (app_worker_t *app_wrk, session_t *app_session) |
| { |
| app_worker_add_event (app_wrk, app_session, SESSION_IO_EVT_RX); |
| return 0; |
| } |
| |
| u32 |
| tls_listener_ctx_alloc (void) |
| { |
| tls_main_t *tm = &tls_main; |
| tls_ctx_t *ctx; |
| |
| pool_get (tm->listener_ctx_pool, ctx); |
| clib_memset (ctx, 0, sizeof (*ctx)); |
| return ctx - tm->listener_ctx_pool; |
| } |
| |
| void |
| tls_listener_ctx_free (tls_ctx_t * ctx) |
| { |
| if (CLIB_DEBUG) |
| memset (ctx, 0xfb, sizeof (*ctx)); |
| pool_put (tls_main.listener_ctx_pool, ctx); |
| } |
| |
| tls_ctx_t * |
| tls_listener_ctx_get (u32 ctx_index) |
| { |
| return pool_elt_at_index (tls_main.listener_ctx_pool, ctx_index); |
| } |
| |
| u32 |
| tls_listener_ctx_index (tls_ctx_t * ctx) |
| { |
| return (ctx - tls_main.listener_ctx_pool); |
| } |
| |
| u32 |
| tls_ctx_half_open_alloc (void) |
| { |
| tls_main_t *tm = &tls_main; |
| tls_ctx_t *ctx; |
| |
| if (vec_len (tm->postponed_ho_free)) |
| tls_flush_postponed_ho_cleanups (); |
| |
| pool_get_aligned_safe (tm->half_open_ctx_pool, ctx, CLIB_CACHE_LINE_BYTES); |
| |
| clib_memset (ctx, 0, sizeof (*ctx)); |
| ctx->c_c_index = ctx - tm->half_open_ctx_pool; |
| ctx->c_thread_index = transport_cl_thread (); |
| |
| return ctx->c_c_index; |
| } |
| |
| void |
| tls_ctx_half_open_free (u32 ho_index) |
| { |
| pool_put_index (tls_main.half_open_ctx_pool, ho_index); |
| } |
| |
| tls_ctx_t * |
| tls_ctx_half_open_get (u32 ctx_index) |
| { |
| tls_main_t *tm = &tls_main; |
| return pool_elt_at_index (tm->half_open_ctx_pool, ctx_index); |
| } |
| |
| void |
| tls_add_postponed_ho_cleanups (u32 ho_index) |
| { |
| tls_main_t *tm = &tls_main; |
| vec_add1 (tm->postponed_ho_free, ho_index); |
| } |
| |
| static void |
| tls_ctx_ho_try_free (u32 ho_index) |
| { |
| tls_ctx_t *ctx; |
| |
| ctx = tls_ctx_half_open_get (ho_index); |
| /* Probably tcp connected just before tcp establish timeout and |
| * worker that owns established session has not yet received |
| * @ref tls_session_connected_cb */ |
| if (!(ctx->flags & TLS_CONN_F_HO_DONE)) |
| { |
| ctx->tls_session_handle = SESSION_INVALID_HANDLE; |
| tls_add_postponed_ho_cleanups (ho_index); |
| return; |
| } |
| if (!(ctx->flags & TLS_CONN_F_NO_APP_SESSION)) |
| session_half_open_delete_notify (&ctx->connection); |
| tls_ctx_half_open_free (ho_index); |
| } |
| |
| void |
| tls_flush_postponed_ho_cleanups () |
| { |
| tls_main_t *tm = &tls_main; |
| u32 *ho_indexp, *tmp; |
| |
| tmp = tm->postponed_ho_free; |
| tm->postponed_ho_free = tm->ho_free_list; |
| tm->ho_free_list = tmp; |
| |
| vec_foreach (ho_indexp, tm->ho_free_list) |
| tls_ctx_ho_try_free (*ho_indexp); |
| |
| vec_reset_length (tm->ho_free_list); |
| } |
| |
| void |
| tls_notify_app_enqueue (tls_ctx_t * ctx, session_t * app_session) |
| { |
| app_worker_t *app_wrk; |
| app_wrk = app_worker_get_if_valid (app_session->app_wrk_index); |
| if (PREDICT_TRUE (app_wrk != 0)) |
| tls_add_app_q_evt (app_wrk, app_session); |
| } |
| |
| int |
| tls_notify_app_accept (tls_ctx_t * ctx) |
| { |
| session_t *app_listener, *app_session; |
| app_worker_t *app_wrk; |
| tls_ctx_t *lctx; |
| int rv; |
| |
| lctx = tls_listener_ctx_get (ctx->listener_ctx_index); |
| app_listener = listen_session_get_from_handle (lctx->app_session_handle); |
| |
| 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 = app_listener->session_type; |
| app_session->listener_handle = listen_session_get_handle (app_listener); |
| app_session->session_state = SESSION_STATE_ACCEPTING; |
| |
| if ((rv = app_worker_init_accepted (app_session))) |
| { |
| TLS_DBG (1, "failed to allocate fifos"); |
| session_free (app_session); |
| ctx->flags |= TLS_CONN_F_NO_APP_SESSION; |
| return rv; |
| } |
| ctx->app_session_handle = session_handle (app_session); |
| ctx->parent_app_wrk_index = app_session->app_wrk_index; |
| app_wrk = app_worker_get (app_session->app_wrk_index); |
| return app_worker_accept_notify (app_wrk, app_session); |
| } |
| |
| int |
| tls_notify_app_connected (tls_ctx_t * ctx, session_error_t err) |
| { |
| u32 parent_app_api_ctx; |
| session_t *app_session; |
| app_worker_t *app_wrk; |
| |
| app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_index); |
| if (!app_wrk) |
| { |
| if (ctx->tls_type == TRANSPORT_PROTO_TLS) |
| session_free (session_get (ctx->c_s_index, ctx->c_thread_index)); |
| ctx->flags |= TLS_CONN_F_NO_APP_SESSION; |
| return -1; |
| } |
| |
| if (err) |
| { |
| /* 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)); |
| ctx->flags |= TLS_CONN_F_NO_APP_SESSION; |
| goto send_reply; |
| } |
| |
| /* 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; |
| /* Cleanup half-open session as we don't get notification from udp */ |
| session_half_open_delete_notify (&ctx->connection); |
| 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->app_wrk_index = ctx->parent_app_wrk_index; |
| app_session->opaque = ctx->parent_app_api_context; |
| |
| if ((err = app_worker_init_connected (app_wrk, app_session))) |
| { |
| app_worker_connect_notify (app_wrk, 0, err, ctx->parent_app_api_context); |
| ctx->flags |= TLS_CONN_F_NO_APP_SESSION; |
| session_free (app_session); |
| return -1; |
| } |
| |
| app_session->session_state = SESSION_STATE_READY; |
| parent_app_api_ctx = ctx->parent_app_api_context; |
| ctx->app_session_handle = session_handle (app_session); |
| |
| if (app_worker_connect_notify (app_wrk, app_session, SESSION_E_NONE, |
| parent_app_api_ctx)) |
| { |
| TLS_DBG (1, "failed to notify app"); |
| session_free (session_get (ctx->c_s_index, ctx->c_thread_index)); |
| ctx->flags |= TLS_CONN_F_NO_APP_SESSION; |
| return -1; |
| } |
| |
| return 0; |
| |
| send_reply: |
| return app_worker_connect_notify (app_wrk, 0, err, |
| ctx->parent_app_api_context); |
| } |
| |
| static inline void |
| tls_ctx_parse_handle (u32 ctx_handle, u32 * ctx_index, u32 * engine_type) |
| { |
| *ctx_index = ctx_handle & TLS_IDX_MASK; |
| *engine_type = ctx_handle >> TLS_ENGINE_TYPE_SHIFT; |
| } |
| |
| static inline crypto_engine_type_t |
| tls_get_engine_type (crypto_engine_type_t requested, |
| crypto_engine_type_t preferred) |
| { |
| if (requested != CRYPTO_ENGINE_NONE) |
| { |
| if (tls_vfts[requested].ctx_alloc) |
| return requested; |
| return CRYPTO_ENGINE_NONE; |
| } |
| if (!tls_vfts[preferred].ctx_alloc) |
| return tls_get_available_engine (); |
| return preferred; |
| } |
| |
| static inline u32 |
| tls_ctx_alloc (crypto_engine_type_t engine_type) |
| { |
| u32 ctx_index; |
| ctx_index = tls_vfts[engine_type].ctx_alloc (); |
| 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) |
| { |
| u32 ctx_index, engine_type; |
| tls_ctx_parse_handle (ctx_handle, &ctx_index, &engine_type); |
| return tls_vfts[engine_type].ctx_get (ctx_index); |
| } |
| |
| static inline tls_ctx_t * |
| tls_ctx_get_w_thread (u32 ctx_handle, u8 thread_index) |
| { |
| u32 ctx_index, engine_type; |
| tls_ctx_parse_handle (ctx_handle, &ctx_index, &engine_type); |
| return tls_vfts[engine_type].ctx_get_w_thread (ctx_index, thread_index); |
| } |
| |
| static inline int |
| tls_ctx_init_server (tls_ctx_t * ctx) |
| { |
| return tls_vfts[ctx->tls_ctx_engine].ctx_init_server (ctx); |
| } |
| |
| static inline int |
| tls_ctx_init_client (tls_ctx_t * ctx) |
| { |
| return tls_vfts[ctx->tls_ctx_engine].ctx_init_client (ctx); |
| } |
| |
| static inline int |
| tls_ctx_write (tls_ctx_t * ctx, session_t * app_session, |
| transport_send_params_t * sp) |
| { |
| u32 n_wrote; |
| |
| sp->max_burst_size = sp->max_burst_size * TRANSPORT_PACER_MIN_MSS; |
| n_wrote = tls_vfts[ctx->tls_ctx_engine].ctx_write (ctx, app_session, sp); |
| sp->bytes_dequeued = n_wrote; |
| return n_wrote > 0 ? clib_max (n_wrote / TRANSPORT_PACER_MIN_MSS, 1) : 0; |
| } |
| |
| static inline int |
| tls_ctx_read (tls_ctx_t * ctx, session_t * tls_session) |
| { |
| return tls_vfts[ctx->tls_ctx_engine].ctx_read (ctx, tls_session); |
| } |
| |
| static inline int |
| tls_ctx_transport_close (tls_ctx_t * ctx) |
| { |
| return tls_vfts[ctx->tls_ctx_engine].ctx_transport_close (ctx); |
| } |
| |
| static inline int |
| tls_ctx_app_close (tls_ctx_t * ctx) |
| { |
| return tls_vfts[ctx->tls_ctx_engine].ctx_app_close (ctx); |
| } |
| |
| void |
| tls_ctx_free (tls_ctx_t * ctx) |
| { |
| tls_vfts[ctx->tls_ctx_engine].ctx_free (ctx); |
| } |
| |
| u8 |
| tls_ctx_handshake_is_over (tls_ctx_t * ctx) |
| { |
| return tls_vfts[ctx->tls_ctx_engine].ctx_handshake_is_over (ctx); |
| } |
| |
| int |
| tls_reinit_ca_chain (crypto_engine_type_t tls_engine_id) |
| { |
| return tls_vfts[tls_engine_id].ctx_reinit_cachain (); |
| } |
| |
| void |
| tls_notify_app_io_error (tls_ctx_t *ctx) |
| { |
| ASSERT (tls_ctx_handshake_is_over (ctx)); |
| |
| session_transport_reset_notify (&ctx->connection); |
| session_transport_closed_notify (&ctx->connection); |
| tls_disconnect_transport (ctx); |
| } |
| |
| void |
| tls_session_reset_callback (session_t * s) |
| { |
| tls_ctx_t *ctx; |
| transport_connection_t *tc; |
| session_t *app_session; |
| |
| ctx = tls_ctx_get (s->opaque); |
| ctx->flags |= TLS_CONN_F_PASSIVE_CLOSE; |
| tc = &ctx->connection; |
| if (tls_ctx_handshake_is_over (ctx)) |
| { |
| session_transport_reset_notify (tc); |
| session_transport_closed_notify (tc); |
| tls_disconnect_transport (ctx); |
| } |
| else |
| { |
| app_session = session_get_if_valid (ctx->c_s_index, ctx->c_thread_index); |
| if (app_session) |
| { |
| session_free (app_session); |
| ctx->c_s_index = SESSION_INVALID_INDEX; |
| ctx->flags |= TLS_CONN_F_NO_APP_SESSION; |
| tls_disconnect_transport (ctx); |
| } |
| } |
| } |
| |
| static void |
| tls_session_cleanup_ho (session_t *s) |
| { |
| /* session opaque stores the opaque passed on connect */ |
| tls_ctx_ho_try_free (s->opaque); |
| } |
| |
| int |
| tls_add_segment_callback (u32 client_index, u64 segment_handle) |
| { |
| /* No-op for builtin */ |
| return 0; |
| } |
| |
| int |
| tls_del_segment_callback (u32 client_index, u64 segment_handle) |
| { |
| return 0; |
| } |
| |
| void |
| tls_session_disconnect_callback (session_t * tls_session) |
| { |
| tls_ctx_t *ctx; |
| |
| TLS_DBG (1, "TCP disconnecting handle %x session %u", tls_session->opaque, |
| tls_session->session_index); |
| |
| ASSERT (tls_session->thread_index == vlib_get_thread_index () |
| || vlib_thread_is_main_w_barrier ()); |
| |
| ctx = tls_ctx_get_w_thread (tls_session->opaque, tls_session->thread_index); |
| ctx->flags |= TLS_CONN_F_PASSIVE_CLOSE; |
| tls_ctx_transport_close (ctx); |
| } |
| |
| int |
| tls_session_accept_callback (session_t * tls_session) |
| { |
| session_t *tls_listener, *app_session; |
| tls_ctx_t *lctx, *ctx; |
| u32 ctx_handle; |
| |
| tls_listener = |
| listen_session_get_from_handle (tls_session->listener_handle); |
| lctx = tls_listener_ctx_get (tls_listener->opaque); |
| |
| ctx_handle = tls_ctx_alloc (lctx->tls_ctx_engine); |
| ctx = tls_ctx_get (ctx_handle); |
| memcpy (ctx, lctx, sizeof (*lctx)); |
| ctx->c_thread_index = vlib_get_thread_index (); |
| ctx->tls_ctx_handle = ctx_handle; |
| tls_session->session_state = SESSION_STATE_READY; |
| tls_session->opaque = ctx_handle; |
| ctx->tls_session_handle = session_handle (tls_session); |
| ctx->listener_ctx_index = tls_listener->opaque; |
| ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP; |
| ctx->ckpair_index = lctx->ckpair_index; |
| |
| /* Preallocate app session. Avoids allocating a session post handshake |
| * on tls_session rx and potentially invalidating the session pool */ |
| app_session = session_alloc (ctx->c_thread_index); |
| app_session->session_state = SESSION_STATE_CREATED; |
| app_session->session_type = |
| session_type_from_proto_and_ip (TRANSPORT_PROTO_TLS, ctx->tcp_is_ip4); |
| app_session->connection_index = ctx->tls_ctx_handle; |
| ctx->c_s_index = app_session->session_index; |
| |
| TLS_DBG (1, "Accept on listener %u new connection [%u]%x", |
| tls_listener->opaque, vlib_get_thread_index (), ctx_handle); |
| |
| if (tls_ctx_init_server (ctx)) |
| { |
| /* Do not free ctx yet, in case we have pending rx events */ |
| session_free (app_session); |
| ctx->flags |= TLS_CONN_F_NO_APP_SESSION; |
| tls_disconnect_transport (ctx); |
| } |
| |
| return 0; |
| } |
| |
| int |
| tls_app_rx_callback (session_t *ts) |
| { |
| tls_ctx_t *ctx; |
| |
| /* DTLS session migrating, wait for next notification */ |
| if (PREDICT_FALSE (ts->flags & SESSION_F_IS_MIGRATING)) |
| return 0; |
| |
| /* Read rescheduled but underlying transport deleted now */ |
| if (PREDICT_FALSE ((ts->session_state == SESSION_STATE_TRANSPORT_DELETED))) |
| return 0; |
| |
| ctx = tls_ctx_get (ts->opaque); |
| if (PREDICT_FALSE ((ctx->flags & TLS_CONN_F_NO_APP_SESSION) || |
| (ctx->flags & TLS_CONN_F_APP_CLOSED))) |
| { |
| TLS_DBG (1, "Local App closed"); |
| return 0; |
| } |
| tls_ctx_read (ctx, ts); |
| return 0; |
| } |
| |
| int |
| tls_app_tx_callback (session_t * tls_session) |
| { |
| tls_ctx_t *ctx; |
| |
| ctx = tls_ctx_get (tls_session->opaque); |
| transport_connection_reschedule (&ctx->connection); |
| |
| return 0; |
| } |
| |
| int |
| 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); |
| ho_ctx->flags |= TLS_CONN_F_HO_DONE; |
| |
| ctx_handle = tls_ctx_alloc (ho_ctx->tls_ctx_engine); |
| ctx = tls_ctx_get (ctx_handle); |
| clib_memcpy_fast (ctx, ho_ctx, sizeof (*ctx)); |
| /* Half-open freed on tcp half-open cleanup notification */ |
| |
| ctx->c_thread_index = vlib_get_thread_index (); |
| ctx->tls_ctx_handle = ctx_handle; |
| ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP; |
| |
| TLS_DBG (1, "TCP connect for %u returned %u. New connection [%u]%x", |
| ho_ctx_index, err, vlib_get_thread_index (), |
| (ctx) ? ctx_handle : ~0); |
| |
| ctx->tls_session_handle = session_handle (tls_session); |
| tls_session->opaque = ctx_handle; |
| tls_session->session_state = SESSION_STATE_READY; |
| |
| /* Preallocate app session. Avoids allocating a session post handshake |
| * on tls_session rx and potentially invalidating the session pool */ |
| 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; |
| |
| if (tls_ctx_init_client (ctx)) |
| { |
| tls_notify_app_connected (ctx, SESSION_E_TLS_HANDSHAKE); |
| tls_disconnect_transport (ctx); |
| } |
| |
| return 0; |
| } |
| |
| 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, transport_cl_thread ()); |
| |
| 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 (err) |
| { |
| app_worker_t *app_wrk; |
| tls_ctx_t *ho_ctx; |
| u32 api_context; |
| |
| ho_ctx = tls_ctx_half_open_get (ho_ctx_index); |
| ho_ctx->flags |= TLS_CONN_F_HO_DONE; |
| app_wrk = app_worker_get_if_valid (ho_ctx->parent_app_wrk_index); |
| if (app_wrk) |
| { |
| api_context = ho_ctx->parent_app_api_context; |
| app_worker_connect_notify (app_wrk, 0, err, api_context); |
| } |
| |
| return 0; |
| } |
| |
| 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_t *ctx; |
| |
| if (ntf == SESSION_CLEANUP_TRANSPORT) |
| { |
| /* Allow cleanup of tcp session */ |
| if (s->session_state == SESSION_STATE_TRANSPORT_DELETED) |
| session_close (s); |
| return; |
| } |
| |
| ctx = tls_ctx_get (s->opaque); |
| if (!(ctx->flags & TLS_CONN_F_NO_APP_SESSION)) |
| session_transport_delete_notify (&ctx->connection); |
| tls_ctx_free (ctx); |
| } |
| |
| static void |
| dtls_migrate_ctx (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; |
| |
| /* Probably the app detached while the session was migrating. Cleanup */ |
| if (session_half_open_migrated_notify (&ctx->connection)) |
| { |
| ctx->flags |= TLS_CONN_F_NO_APP_SESSION; |
| tls_disconnect (ctx->tls_ctx_handle, vlib_get_thread_index ()); |
| return; |
| } |
| |
| 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, *cloned_ctx; |
| |
| /* Migrate dtls context to new thread */ |
| ctx = tls_ctx_get_w_thread (us->opaque, us->thread_index); |
| ctx->tls_session_handle = new_sh; |
| cloned_ctx = tls_ctx_detach (ctx); |
| ctx->flags |= TLS_CONN_F_MIGRATED; |
| session_half_open_migrate_notify (&ctx->connection); |
| |
| session_send_rpc_evt_to_thread (new_thread, dtls_migrate_ctx, |
| (void *) cloned_ctx); |
| |
| tls_ctx_free (ctx); |
| } |
| |
| static void |
| tls_session_transport_closed_callback (session_t *ts) |
| { |
| tls_ctx_t *ctx; |
| |
| ctx = tls_ctx_get_w_thread (ts->opaque, ts->thread_index); |
| if (!(ctx->flags & TLS_CONN_F_NO_APP_SESSION)) |
| session_transport_closed_notify (&ctx->connection); |
| } |
| |
| static session_cb_vft_t tls_app_cb_vft = { |
| .session_accept_callback = tls_session_accept_callback, |
| .session_disconnect_callback = tls_session_disconnect_callback, |
| .session_connected_callback = tls_session_connected_callback, |
| .session_reset_callback = tls_session_reset_callback, |
| .session_transport_closed_callback = tls_session_transport_closed_callback, |
| .half_open_cleanup_callback = tls_session_cleanup_ho, |
| .add_segment_callback = tls_add_segment_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, |
| }; |
| |
| int |
| tls_connect (transport_endpoint_cfg_t * tep) |
| { |
| vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs; |
| transport_endpt_crypto_cfg_t *ccfg; |
| 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_index; |
| int rv; |
| |
| sep = (session_endpoint_cfg_t *) tep; |
| if (!sep->ext_cfg) |
| return SESSION_E_NOEXTCFG; |
| |
| app_wrk = app_worker_get (sep->app_wrk_index); |
| app = application_get (app_wrk->app_index); |
| |
| ccfg = &sep->ext_cfg->crypto; |
| engine_type = tls_get_engine_type (ccfg->crypto_engine, app->tls_engine); |
| if (engine_type == CRYPTO_ENGINE_NONE) |
| { |
| clib_warning ("No tls engine_type available"); |
| return SESSION_E_NOCRYPTOENG; |
| } |
| |
| ctx_index = tls_ctx_half_open_alloc (); |
| ctx = tls_ctx_half_open_get (ctx_index); |
| ctx->parent_app_wrk_index = sep->app_wrk_index; |
| ctx->parent_app_api_context = sep->opaque; |
| ctx->tcp_is_ip4 = sep->is_ip4; |
| ctx->tls_type = sep->transport_proto; |
| ctx->ckpair_index = ccfg->ckpair_index; |
| ctx->c_proto = TRANSPORT_PROTO_TLS; |
| ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP; |
| if (ccfg->hostname[0]) |
| { |
| ctx->srv_hostname = format (0, "%s", ccfg->hostname); |
| vec_terminate_c_string (ctx->srv_hostname); |
| } |
| |
| ctx->tls_ctx_engine = engine_type; |
| |
| clib_memcpy_fast (&cargs->sep, sep, sizeof (session_endpoint_t)); |
| cargs->sep.transport_proto = TRANSPORT_PROTO_TCP; |
| cargs->app_index = tm->app_index; |
| cargs->api_context = ctx_index; |
| cargs->sep_ext.ns_index = app->ns_index; |
| if ((rv = vnet_connect (cargs))) |
| { |
| tls_ctx_half_open_free (ctx_index); |
| return rv; |
| } |
| |
| /* Track half-open tcp session in case we need to clean it up */ |
| ctx->tls_session_handle = cargs->sh; |
| |
| TLS_DBG (1, "New connect request %u engine %d", ctx_index, engine_type); |
| return ctx_index; |
| } |
| |
| void |
| tls_disconnect (u32 ctx_handle, u32 thread_index) |
| { |
| tls_ctx_t *ctx; |
| |
| TLS_DBG (1, "Disconnecting %x", ctx_handle); |
| |
| ctx = tls_ctx_get (ctx_handle); |
| ctx->flags |= TLS_CONN_F_APP_CLOSED; |
| tls_ctx_app_close (ctx); |
| } |
| |
| u32 |
| tls_start_listen (u32 app_listener_index, transport_endpoint_cfg_t *tep) |
| { |
| vnet_listen_args_t _bargs, *args = &_bargs; |
| transport_endpt_crypto_cfg_t *ccfg; |
| app_worker_t *app_wrk; |
| tls_main_t *tm = &tls_main; |
| session_handle_t tls_al_handle; |
| session_endpoint_cfg_t *sep; |
| session_t *tls_listener; |
| session_t *app_listener; |
| crypto_engine_type_t engine_type; |
| application_t *app; |
| app_listener_t *al; |
| tls_ctx_t *lctx; |
| u32 lctx_index; |
| int rv; |
| |
| sep = (session_endpoint_cfg_t *) tep; |
| if (!sep->ext_cfg) |
| return SESSION_E_NOEXTCFG; |
| |
| app_wrk = app_worker_get (sep->app_wrk_index); |
| app = application_get (app_wrk->app_index); |
| |
| ccfg = &sep->ext_cfg->crypto; |
| engine_type = tls_get_engine_type (ccfg->crypto_engine, app->tls_engine); |
| if (engine_type == CRYPTO_ENGINE_NONE) |
| { |
| clib_warning ("No tls engine_type available"); |
| return SESSION_E_NOCRYPTOENG; |
| } |
| |
| clib_memset (args, 0, sizeof (*args)); |
| args->app_index = tm->app_index; |
| 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 ((rv = vnet_listen (args))) |
| return rv; |
| |
| lctx_index = tls_listener_ctx_alloc (); |
| tls_al_handle = args->handle; |
| al = app_listener_get_w_handle (tls_al_handle); |
| tls_listener = app_listener_get_session (al); |
| tls_listener->opaque = lctx_index; |
| |
| app_listener = listen_session_get (app_listener_index); |
| |
| lctx = tls_listener_ctx_get (lctx_index); |
| lctx->parent_app_wrk_index = sep->app_wrk_index; |
| lctx->tls_session_handle = tls_al_handle; |
| lctx->app_session_handle = listen_session_get_handle (app_listener); |
| lctx->tcp_is_ip4 = sep->is_ip4; |
| lctx->tls_ctx_engine = engine_type; |
| lctx->tls_type = sep->transport_proto; |
| lctx->ckpair_index = ccfg->ckpair_index; |
| lctx->c_s_index = app_listener_index; |
| lctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP; |
| |
| if (tls_vfts[engine_type].ctx_start_listen (lctx)) |
| { |
| vnet_unlisten_args_t a = { |
| .handle = lctx->tls_session_handle, |
| .app_index = tls_main.app_index, |
| .wrk_map_index = 0 |
| }; |
| if ((vnet_unlisten (&a))) |
| clib_warning ("unlisten returned"); |
| tls_listener_ctx_free (lctx); |
| lctx_index = SESSION_INVALID_INDEX; |
| } |
| |
| TLS_DBG (1, "Started listening %d, engine type %d", lctx_index, |
| engine_type); |
| return lctx_index; |
| } |
| |
| u32 |
| tls_stop_listen (u32 lctx_index) |
| { |
| session_endpoint_t sep = SESSION_ENDPOINT_NULL; |
| crypto_engine_type_t engine_type; |
| transport_connection_t *lc; |
| tls_ctx_t *lctx; |
| session_t *ls; |
| int rv; |
| |
| lctx = tls_listener_ctx_get (lctx_index); |
| |
| /* Cleanup listener from session lookup table */ |
| ls = session_get_from_handle (lctx->tls_session_handle); |
| lc = session_get_transport (ls); |
| |
| sep.fib_index = lc->fib_index; |
| sep.port = lc->lcl_port; |
| sep.is_ip4 = lc->is_ip4; |
| sep.transport_proto = lctx->tls_type; |
| clib_memcpy (&sep.ip, &lc->lcl_ip, sizeof (lc->lcl_ip)); |
| session_lookup_del_session_endpoint2 (&sep); |
| |
| vnet_unlisten_args_t a = { |
| .handle = lctx->tls_session_handle, |
| .app_index = tls_main.app_index, |
| .wrk_map_index = 0 /* default wrk */ |
| }; |
| if ((rv = vnet_unlisten (&a))) |
| clib_warning ("unlisten returned %d", rv); |
| |
| engine_type = lctx->tls_ctx_engine; |
| tls_vfts[engine_type].ctx_stop_listen (lctx); |
| |
| tls_listener_ctx_free (lctx); |
| return 0; |
| } |
| |
| transport_connection_t * |
| tls_connection_get (u32 ctx_index, u32 thread_index) |
| { |
| tls_ctx_t *ctx; |
| ctx = tls_ctx_get_w_thread (ctx_index, thread_index); |
| return &ctx->connection; |
| } |
| |
| transport_connection_t * |
| tls_listener_get (u32 listener_index) |
| { |
| tls_ctx_t *ctx; |
| ctx = tls_listener_ctx_get (listener_index); |
| return &ctx->connection; |
| } |
| |
| static transport_connection_t * |
| tls_half_open_get (u32 ho_index) |
| { |
| tls_ctx_t *ctx; |
| ctx = tls_ctx_half_open_get (ho_index); |
| return &ctx->connection; |
| } |
| |
| static void |
| tls_cleanup_ho (u32 ho_index) |
| { |
| tls_ctx_t *ctx; |
| session_t *s; |
| |
| ctx = tls_ctx_half_open_get (ho_index); |
| /* Already pending cleanup */ |
| if (ctx->tls_session_handle == SESSION_INVALID_HANDLE) |
| { |
| ASSERT (ctx->flags & TLS_CONN_F_HO_DONE); |
| ctx->flags |= TLS_CONN_F_NO_APP_SESSION; |
| return; |
| } |
| |
| s = session_get_from_handle (ctx->tls_session_handle); |
| /* If no pending cleanup notification, force cleanup now. Otherwise, |
| * wait for cleanup notification and set no app session on ctx */ |
| if (s->session_state != SESSION_STATE_TRANSPORT_DELETED) |
| { |
| session_cleanup_half_open (ctx->tls_session_handle); |
| tls_ctx_half_open_free (ho_index); |
| } |
| else |
| ctx->flags |= TLS_CONN_F_NO_APP_SESSION; |
| } |
| |
| int |
| tls_custom_tx_callback (void *session, transport_send_params_t * sp) |
| { |
| session_t *as = (session_t *) session; |
| tls_ctx_t *ctx; |
| |
| if (PREDICT_FALSE (as->session_state >= SESSION_STATE_TRANSPORT_CLOSED || |
| as->session_state <= SESSION_STATE_ACCEPTING)) |
| { |
| sp->flags |= TRANSPORT_SND_F_DESCHED; |
| return 0; |
| } |
| |
| ctx = tls_ctx_get (as->connection_index); |
| return tls_ctx_write (ctx, as, sp); |
| } |
| |
| u8 * |
| format_tls_ctx (u8 * s, va_list * args) |
| { |
| 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][%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; |
| } |
| |
| static u8 * |
| format_tls_listener_ctx (u8 * s, va_list * args) |
| { |
| 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][%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 s; |
| } |
| |
| static u8 * |
| format_tls_ctx_state (u8 * s, va_list * args) |
| { |
| tls_ctx_t *ctx; |
| session_t *ts; |
| |
| ctx = va_arg (*args, tls_ctx_t *); |
| ts = session_get (ctx->c_s_index, ctx->c_thread_index); |
| if (ts->session_state == SESSION_STATE_LISTENING) |
| s = format (s, "%s", "LISTEN"); |
| else |
| { |
| if (ts->session_state >= SESSION_STATE_TRANSPORT_CLOSED) |
| s = format (s, "%s", "CLOSED"); |
| else if (ts->session_state == SESSION_STATE_APP_CLOSED) |
| s = format (s, "%s", "APP-CLOSED"); |
| else if (ts->session_state >= SESSION_STATE_TRANSPORT_CLOSING) |
| s = format (s, "%s", "CLOSING"); |
| else if (tls_ctx_handshake_is_over (ctx)) |
| s = format (s, "%s", "ESTABLISHED"); |
| else |
| s = format (s, "%s", "HANDSHAKE"); |
| } |
| |
| return s; |
| } |
| |
| u8 * |
| format_tls_connection (u8 * s, va_list * args) |
| { |
| u32 ctx_index = va_arg (*args, u32); |
| u32 thread_index = va_arg (*args, u32); |
| u32 verbose = va_arg (*args, u32); |
| tls_ctx_t *ctx; |
| |
| ctx = tls_ctx_get_w_thread (ctx_index, thread_index); |
| if (!ctx) |
| return s; |
| |
| s = format (s, "%-" SESSION_CLI_ID_LEN "U", format_tls_ctx, ctx); |
| if (verbose) |
| { |
| s = format (s, "%-" SESSION_CLI_STATE_LEN "U", format_tls_ctx_state, |
| ctx); |
| if (verbose > 1) |
| s = format (s, "\n"); |
| } |
| return s; |
| } |
| |
| u8 * |
| format_tls_listener (u8 * s, va_list * args) |
| { |
| u32 tc_index = va_arg (*args, u32); |
| u32 __clib_unused thread_index = va_arg (*args, u32); |
| u32 verbose = va_arg (*args, u32); |
| tls_ctx_t *ctx = tls_listener_ctx_get (tc_index); |
| |
| s = format (s, "%-" SESSION_CLI_ID_LEN "U", format_tls_listener_ctx, ctx); |
| if (verbose) |
| s = format (s, "%-" SESSION_CLI_STATE_LEN "U", format_tls_ctx_state, ctx); |
| return s; |
| } |
| |
| u8 * |
| format_tls_half_open (u8 * s, va_list * args) |
| { |
| u32 ho_index = va_arg (*args, u32); |
| u32 __clib_unused thread_index = va_arg (*args, u32); |
| u32 __clib_unused verbose = va_arg (*args, u32); |
| session_t *tcp_ho; |
| tls_ctx_t *ho_ctx; |
| |
| ho_ctx = tls_ctx_half_open_get (ho_index); |
| |
| tcp_ho = session_get_from_handle (ho_ctx->tls_session_handle); |
| s = format (s, "[%d:%d][%s] half-open app_wrk %u engine %u ts %d:%d", |
| ho_ctx->c_thread_index, ho_ctx->c_s_index, "TLS", |
| ho_ctx->parent_app_wrk_index, ho_ctx->tls_ctx_engine, |
| tcp_ho->thread_index, tcp_ho->session_index); |
| |
| return s; |
| } |
| |
| static void |
| tls_transport_endpoint_get (u32 ctx_handle, u32 thread_index, |
| transport_endpoint_t * tep, u8 is_lcl) |
| { |
| tls_ctx_t *ctx = tls_ctx_get_w_thread (ctx_handle, thread_index); |
| session_t *tcp_session; |
| |
| tcp_session = session_get_from_handle (ctx->tls_session_handle); |
| session_get_endpoint (tcp_session, tep, is_lcl); |
| } |
| |
| static void |
| tls_transport_listener_endpoint_get (u32 ctx_handle, |
| transport_endpoint_t * tep, u8 is_lcl) |
| { |
| session_t *tls_listener; |
| app_listener_t *al; |
| tls_ctx_t *ctx = tls_listener_ctx_get (ctx_handle); |
| |
| al = app_listener_get_w_handle (ctx->tls_session_handle); |
| tls_listener = app_listener_get_session (al); |
| session_get_endpoint (tls_listener, tep, is_lcl); |
| } |
| |
| static clib_error_t * |
| tls_enable (vlib_main_t * vm, u8 is_en) |
| { |
| vnet_app_detach_args_t _da, *da = &_da; |
| vnet_app_attach_args_t _a, *a = &_a; |
| u64 options[APP_OPTIONS_N_OPTIONS]; |
| tls_main_t *tm = &tls_main; |
| u32 fifo_size = 512 << 10; |
| |
| if (!is_en) |
| { |
| da->app_index = tm->app_index; |
| da->api_client_index = APP_INVALID_INDEX; |
| vnet_application_detach (da); |
| return 0; |
| } |
| |
| fifo_size = tm->fifo_size ? tm->fifo_size : fifo_size; |
| |
| clib_memset (a, 0, sizeof (*a)); |
| clib_memset (options, 0, sizeof (options)); |
| |
| a->session_cb_vft = &tls_app_cb_vft; |
| a->api_client_index = APP_INVALID_INDEX; |
| a->options = options; |
| a->name = format (0, "tls"); |
| a->options[APP_OPTIONS_SEGMENT_SIZE] = tm->first_seg_size; |
| a->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = tm->add_seg_size; |
| a->options[APP_OPTIONS_RX_FIFO_SIZE] = fifo_size; |
| a->options[APP_OPTIONS_TX_FIFO_SIZE] = fifo_size; |
| a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN; |
| a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE; |
| a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_IS_TRANSPORT_APP; |
| |
| if (vnet_application_attach (a)) |
| { |
| clib_warning ("failed to attach tls app"); |
| return clib_error_return (0, "failed to attach tls app"); |
| } |
| |
| tm->app_index = a->app_index; |
| vec_free (a->name); |
| |
| return 0; |
| } |
| |
| static const transport_proto_vft_t tls_proto = { |
| .enable = tls_enable, |
| .connect = tls_connect, |
| .close = tls_disconnect, |
| .start_listen = tls_start_listen, |
| .stop_listen = tls_stop_listen, |
| .get_connection = tls_connection_get, |
| .get_listener = tls_listener_get, |
| .get_half_open = tls_half_open_get, |
| .cleanup_ho = tls_cleanup_ho, |
| .custom_tx = tls_custom_tx_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 = "tls", |
| .short_name = "J", |
| .tx_type = TRANSPORT_TX_INTERNAL, |
| .service_type = TRANSPORT_SERVICE_VC, |
| }, |
| }; |
| |
| int |
| dtls_connect (transport_endpoint_cfg_t *tep) |
| { |
| vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs; |
| transport_endpt_crypto_cfg_t *ccfg; |
| 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; |
| if (!sep->ext_cfg) |
| return -1; |
| |
| app_wrk = app_worker_get (sep->app_wrk_index); |
| app = application_get (app_wrk->app_index); |
| |
| ccfg = &sep->ext_cfg->crypto; |
| engine_type = tls_get_engine_type (ccfg->crypto_engine, 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, transport_cl_thread ()); |
| ctx = tls_ctx_get_w_thread (ctx_handle, transport_cl_thread ()); |
| 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 = ccfg->ckpair_index; |
| ctx->tls_type = sep->transport_proto; |
| ctx->tls_ctx_handle = ctx_handle; |
| ctx->c_proto = TRANSPORT_PROTO_DTLS; |
| ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP; |
| if (ccfg->hostname[0]) |
| { |
| ctx->srv_hostname = format (0, "%s", ccfg->hostname); |
| vec_terminate_c_string (ctx->srv_hostname); |
| } |
| |
| 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 ctx_handle; |
| } |
| |
| static transport_connection_t * |
| dtls_half_open_get (u32 ho_index) |
| { |
| tls_ctx_t *ho_ctx; |
| ho_ctx = tls_ctx_get_w_thread (ho_index, transport_cl_thread ()); |
| return &ho_ctx->connection; |
| } |
| |
| static void |
| dtls_cleanup_callback (u32 ctx_index, u32 thread_index) |
| { |
| /* No op */ |
| } |
| |
| static void |
| dtls_cleanup_ho (u32 ho_index) |
| { |
| tls_ctx_t *ctx; |
| ctx = tls_ctx_get_w_thread (ho_index, transport_cl_thread ()); |
| tls_ctx_free (ctx); |
| } |
| |
| u8 * |
| format_dtls_half_open (u8 *s, va_list *args) |
| { |
| u32 ho_index = va_arg (*args, u32); |
| u32 __clib_unused thread_index = va_arg (*args, u32); |
| tls_ctx_t *ho_ctx; |
| session_t *us; |
| |
| ho_ctx = tls_ctx_get_w_thread (ho_index, transport_cl_thread ()); |
| |
| us = session_get_from_handle (ho_ctx->tls_session_handle); |
| s = format (s, "[%d:%d][%s] half-open app_wrk %u engine %u us %d:%d", |
| ho_ctx->c_thread_index, ho_ctx->c_s_index, "DTLS", |
| ho_ctx->parent_app_wrk_index, ho_ctx->tls_ctx_engine, |
| us->thread_index, us->session_index); |
| |
| return s; |
| } |
| |
| 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, |
| .get_half_open = dtls_half_open_get, |
| .custom_tx = tls_custom_tx_callback, |
| .cleanup = dtls_cleanup_callback, |
| .cleanup_ho = dtls_cleanup_ho, |
| .format_connection = format_tls_connection, |
| .format_half_open = format_dtls_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_VC, |
| }, |
| }; |
| |
| void |
| tls_register_engine (const tls_engine_vft_t * vft, crypto_engine_type_t type) |
| { |
| vec_validate (tls_vfts, type); |
| tls_vfts[type] = *vft; |
| } |
| |
| static clib_error_t * |
| tls_init (vlib_main_t * vm) |
| { |
| vlib_thread_main_t *vtm = vlib_get_thread_main (); |
| tls_main_t *tm = &tls_main; |
| u32 num_threads; |
| |
| num_threads = 1 /* main thread */ + vtm->n_threads; |
| |
| if (!tm->ca_cert_path) |
| tm->ca_cert_path = TLS_CA_CERT_PATH; |
| |
| vec_validate (tm->rx_bufs, num_threads - 1); |
| vec_validate (tm->tx_bufs, num_threads - 1); |
| |
| tm->first_seg_size = 32 << 20; |
| tm->add_seg_size = 256 << 20; |
| |
| transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto, |
| 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; |
| } |
| |
| VLIB_INIT_FUNCTION (tls_init); |
| |
| static clib_error_t * |
| tls_config_fn (vlib_main_t * vm, unformat_input_t * input) |
| { |
| tls_main_t *tm = &tls_main; |
| uword tmp; |
| while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| { |
| if (unformat (input, "use-test-cert-in-ca")) |
| tm->use_test_cert_in_ca = 1; |
| else if (unformat (input, "ca-cert-path %s", &tm->ca_cert_path)) |
| ; |
| else if (unformat (input, "first-segment-size %U", unformat_memory_size, |
| &tm->first_seg_size)) |
| ; |
| else if (unformat (input, "add-segment-size %U", unformat_memory_size, |
| &tm->add_seg_size)) |
| ; |
| else if (unformat (input, "fifo-size %U", unformat_memory_size, &tmp)) |
| { |
| if (tmp >= 0x100000000ULL) |
| { |
| return clib_error_return |
| (0, "fifo-size %llu (0x%llx) too large", tmp, tmp); |
| } |
| tm->fifo_size = tmp; |
| } |
| else |
| return clib_error_return (0, "unknown input `%U'", |
| format_unformat_error, input); |
| } |
| return 0; |
| } |
| |
| VLIB_CONFIG_FUNCTION (tls_config_fn, "tls"); |
| |
| tls_main_t * |
| vnet_tls_get_main (void) |
| { |
| return &tls_main; |
| } |
| |
| /* |
| * fd.io coding-style-patch-verification: ON |
| * |
| * Local Variables: |
| * eval: (c-set-style "gnu") |
| * End: |
| */ |