diff options
Diffstat (limited to 'src/vnet/session/application_local.c')
| -rw-r--r-- | src/vnet/session/application_local.c | 501 |
1 files changed, 501 insertions, 0 deletions
diff --git a/src/vnet/session/application_local.c b/src/vnet/session/application_local.c new file mode 100644 index 00000000000..54e53e5668e --- /dev/null +++ b/src/vnet/session/application_local.c @@ -0,0 +1,501 @@ +/* + * Copyright (c) 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_local.h> +#include <vnet/session/session.h> + +local_session_t * +application_local_listen_session_alloc (application_t * app) +{ + local_session_t *ll; + pool_get_zero (app->local_listen_sessions, ll); + ll->session_index = ll - app->local_listen_sessions; + ll->session_type = session_type_from_proto_and_ip (TRANSPORT_PROTO_NONE, 0); + ll->app_index = app->app_index; + ll->session_state = SESSION_STATE_LISTENING; + return ll; +} + +void +application_local_listen_session_free (application_t * app, + local_session_t * ll) +{ + pool_put (app->local_listen_sessions, ll); + if (CLIB_DEBUG) + clib_memset (ll, 0xfb, sizeof (*ll)); +} + +void +application_local_listener_session_endpoint (local_session_t * ll, + session_endpoint_t * sep) +{ + sep->transport_proto = + session_type_transport_proto (ll->listener_session_type); + sep->port = ll->port; + sep->is_ip4 = ll->listener_session_type & 1; +} + +local_session_t * +app_worker_local_session_alloc (app_worker_t * app_wrk) +{ + local_session_t *s; + pool_get (app_wrk->local_sessions, s); + clib_memset (s, 0, sizeof (*s)); + s->app_wrk_index = app_wrk->wrk_index; + s->session_index = s - app_wrk->local_sessions; + s->session_type = session_type_from_proto_and_ip (TRANSPORT_PROTO_NONE, 0); + return s; +} + +void +app_worker_local_session_free (app_worker_t * app_wrk, local_session_t * s) +{ + pool_put (app_wrk->local_sessions, s); + if (CLIB_DEBUG) + clib_memset (s, 0xfc, sizeof (*s)); +} + +local_session_t * +app_worker_get_local_session (app_worker_t * app_wrk, u32 session_index) +{ + if (pool_is_free_index (app_wrk->local_sessions, session_index)) + return 0; + return pool_elt_at_index (app_wrk->local_sessions, session_index); +} + +local_session_t * +app_worker_get_local_session_from_handle (session_handle_t handle) +{ + app_worker_t *server_wrk; + u32 session_index, server_wrk_index; + local_session_parse_handle (handle, &server_wrk_index, &session_index); + server_wrk = app_worker_get_if_valid (server_wrk_index); + if (!server_wrk) + return 0; + return app_worker_get_local_session (server_wrk, session_index); +} + +static inline u64 +application_client_local_connect_key (local_session_t * ls) +{ + return (((u64) ls->app_wrk_index) << 32 | (u64) ls->session_index); +} + +static inline void +application_client_local_connect_key_parse (u64 key, u32 * app_wrk_index, + u32 * session_index) +{ + *app_wrk_index = key >> 32; + *session_index = key & 0xFFFFFFFF; +} + +void +app_worker_local_sessions_free (app_worker_t * app_wrk) +{ + u32 index, server_wrk_index, session_index; + u64 handle, *handles = 0; + app_worker_t *server_wrk; + segment_manager_t *sm; + local_session_t *ls; + int i; + + /* + * Local sessions + */ + if (app_wrk->local_sessions) + { + /* *INDENT-OFF* */ + pool_foreach (ls, app_wrk->local_sessions, ({ + app_worker_local_session_disconnect (app_wrk->wrk_index, ls); + })); + /* *INDENT-ON* */ + } + + /* + * Local connects + */ + vec_reset_length (handles); + /* *INDENT-OFF* */ + hash_foreach (handle, index, app_wrk->local_connects, ({ + vec_add1 (handles, handle); + })); + /* *INDENT-ON* */ + + for (i = 0; i < vec_len (handles); i++) + { + application_client_local_connect_key_parse (handles[i], + &server_wrk_index, + &session_index); + server_wrk = app_worker_get_if_valid (server_wrk_index); + if (server_wrk) + { + ls = app_worker_get_local_session (server_wrk, session_index); + app_worker_local_session_disconnect (app_wrk->wrk_index, ls); + } + } + + sm = segment_manager_get (app_wrk->local_segment_manager); + sm->app_wrk_index = SEGMENT_MANAGER_INVALID_APP_INDEX; + segment_manager_del (sm); +} + +int +app_worker_local_session_cleanup (app_worker_t * client_wrk, + app_worker_t * server_wrk, + local_session_t * ls) +{ + svm_fifo_segment_private_t *seg; + session_t *listener; + segment_manager_t *sm; + u64 client_key; + u8 has_transport; + + /* Retrieve listener transport type as it is the one that decides where + * the fifos are allocated */ + has_transport = application_local_session_listener_has_transport (ls); + if (!has_transport) + sm = app_worker_get_local_segment_manager_w_session (server_wrk, ls); + else + { + listener = listen_session_get (ls->listener_index); + sm = app_worker_get_listen_segment_manager (server_wrk, listener); + } + + seg = segment_manager_get_segment (sm, ls->svm_segment_index); + if (client_wrk) + { + client_key = application_client_local_connect_key (ls); + hash_unset (client_wrk->local_connects, client_key); + } + + if (!has_transport) + { + application_t *server = application_get (server_wrk->app_index); + u64 segment_handle = segment_manager_segment_handle (sm, seg); + server->cb_fns.del_segment_callback (server_wrk->api_client_index, + segment_handle); + if (client_wrk) + { + application_t *client = application_get (client_wrk->app_index); + client->cb_fns.del_segment_callback (client_wrk->api_client_index, + segment_handle); + } + segment_manager_del_segment (sm, seg); + } + + app_worker_local_session_free (server_wrk, ls); + + return 0; +} + +int +app_worker_local_session_connect_notify (local_session_t * ls) +{ + svm_fifo_segment_private_t *seg; + app_worker_t *client_wrk, *server_wrk; + segment_manager_t *sm; + application_t *client; + int rv, is_fail = 0; + u64 segment_handle; + u64 client_key; + + client_wrk = app_worker_get (ls->client_wrk_index); + server_wrk = app_worker_get (ls->app_wrk_index); + client = application_get (client_wrk->app_index); + + sm = app_worker_get_local_segment_manager_w_session (server_wrk, ls); + seg = segment_manager_get_segment_w_lock (sm, ls->svm_segment_index); + segment_handle = segment_manager_segment_handle (sm, seg); + if ((rv = client->cb_fns.add_segment_callback (client_wrk->api_client_index, + segment_handle))) + { + clib_warning ("failed to notify client %u of new segment", + ls->client_wrk_index); + segment_manager_segment_reader_unlock (sm); + app_worker_local_session_disconnect (ls->client_wrk_index, ls); + is_fail = 1; + } + else + { + segment_manager_segment_reader_unlock (sm); + } + + client->cb_fns.session_connected_callback (client_wrk->wrk_index, + ls->client_opaque, + (session_t *) ls, is_fail); + + client_key = application_client_local_connect_key (ls); + hash_set (client_wrk->local_connects, client_key, client_key); + return 0; +} + +static void +application_local_session_fix_eventds (svm_msg_q_t * sq, svm_msg_q_t * cq) +{ + int fd; + + /* + * segment manager initializes only the producer eventds, since vpp is + * typically the producer. But for local sessions, we also pass to the + * apps the mqs they listen on for events from peer apps, so they are also + * consumer fds. + */ + fd = svm_msg_q_get_producer_eventfd (sq); + svm_msg_q_set_consumer_eventfd (sq, fd); + fd = svm_msg_q_get_producer_eventfd (cq); + svm_msg_q_set_consumer_eventfd (cq, fd); +} + +int +app_worker_local_session_connect (app_worker_t * client_wrk, + app_worker_t * server_wrk, + local_session_t * ll, u32 opaque) +{ + u32 seg_size, evt_q_sz, evt_q_elts, margin = 16 << 10; + u32 round_rx_fifo_sz, round_tx_fifo_sz, sm_index; + segment_manager_properties_t *props, *cprops; + int rv, has_transport, seg_index; + svm_fifo_segment_private_t *seg; + application_t *server, *client; + segment_manager_t *sm; + local_session_t *ls; + svm_msg_q_t *sq, *cq; + u64 segment_handle; + + ls = app_worker_local_session_alloc (server_wrk); + server = application_get (server_wrk->app_index); + client = application_get (client_wrk->app_index); + + props = application_segment_manager_properties (server); + cprops = application_segment_manager_properties (client); + evt_q_elts = props->evt_q_size + cprops->evt_q_size; + evt_q_sz = segment_manager_evt_q_expected_size (evt_q_elts); + round_rx_fifo_sz = 1 << max_log2 (props->rx_fifo_size); + round_tx_fifo_sz = 1 << max_log2 (props->tx_fifo_size); + seg_size = round_rx_fifo_sz + round_tx_fifo_sz + evt_q_sz + margin; + + has_transport = session_has_transport ((session_t *) ll); + if (!has_transport) + { + /* Local sessions don't have backing transport */ + ls->port = ll->port; + sm = app_worker_get_local_segment_manager (server_wrk); + } + else + { + session_t *sl = (session_t *) ll; + transport_connection_t *tc; + tc = listen_session_get_transport (sl); + ls->port = tc->lcl_port; + sm = app_worker_get_listen_segment_manager (server_wrk, sl); + } + + seg_index = segment_manager_add_segment (sm, seg_size); + if (seg_index < 0) + { + clib_warning ("failed to add new cut-through segment"); + return seg_index; + } + seg = segment_manager_get_segment_w_lock (sm, seg_index); + sq = segment_manager_alloc_queue (seg, props); + cq = segment_manager_alloc_queue (seg, cprops); + + if (props->use_mq_eventfd) + application_local_session_fix_eventds (sq, cq); + + ls->server_evt_q = pointer_to_uword (sq); + ls->client_evt_q = pointer_to_uword (cq); + rv = segment_manager_try_alloc_fifos (seg, props->rx_fifo_size, + props->tx_fifo_size, + &ls->rx_fifo, &ls->tx_fifo); + if (rv) + { + clib_warning ("failed to add fifos in cut-through segment"); + segment_manager_segment_reader_unlock (sm); + goto failed; + } + sm_index = segment_manager_index (sm); + ls->rx_fifo->ct_session_index = ls->session_index; + ls->tx_fifo->ct_session_index = ls->session_index; + ls->rx_fifo->segment_manager = sm_index; + ls->tx_fifo->segment_manager = sm_index; + ls->rx_fifo->segment_index = seg_index; + ls->tx_fifo->segment_index = seg_index; + ls->svm_segment_index = seg_index; + ls->listener_index = ll->session_index; + ls->client_wrk_index = client_wrk->wrk_index; + ls->client_opaque = opaque; + ls->listener_session_type = ll->session_type; + ls->session_state = SESSION_STATE_READY; + + segment_handle = segment_manager_segment_handle (sm, seg); + if ((rv = server->cb_fns.add_segment_callback (server_wrk->api_client_index, + segment_handle))) + { + clib_warning ("failed to notify server of new segment"); + segment_manager_segment_reader_unlock (sm); + goto failed; + } + segment_manager_segment_reader_unlock (sm); + if ((rv = server->cb_fns.session_accept_callback ((session_t *) ls))) + { + clib_warning ("failed to send accept cut-through notify to server"); + goto failed; + } + if (server->flags & APP_OPTIONS_FLAGS_IS_BUILTIN) + app_worker_local_session_connect_notify (ls); + + return 0; + +failed: + if (!has_transport) + segment_manager_del_segment (sm, seg); + return rv; +} + +int +app_worker_local_session_disconnect (u32 app_wrk_index, local_session_t * ls) +{ + app_worker_t *client_wrk, *server_wrk; + + client_wrk = app_worker_get_if_valid (ls->client_wrk_index); + server_wrk = app_worker_get (ls->app_wrk_index); + + if (ls->session_state == SESSION_STATE_CLOSED) + return app_worker_local_session_cleanup (client_wrk, server_wrk, ls); + + if (app_wrk_index == ls->client_wrk_index) + { + mq_send_local_session_disconnected_cb (ls->app_wrk_index, ls); + } + else + { + if (!client_wrk) + { + return app_worker_local_session_cleanup (client_wrk, server_wrk, + ls); + } + else if (ls->session_state < SESSION_STATE_READY) + { + application_t *client = application_get (client_wrk->app_index); + client->cb_fns.session_connected_callback (client_wrk->wrk_index, + ls->client_opaque, + (session_t *) ls, + 1 /* is_fail */ ); + ls->session_state = SESSION_STATE_CLOSED; + return app_worker_local_session_cleanup (client_wrk, server_wrk, + ls); + } + else + { + mq_send_local_session_disconnected_cb (client_wrk->wrk_index, ls); + } + } + + ls->session_state = SESSION_STATE_CLOSED; + + return 0; +} + +int +app_worker_local_session_disconnect_w_index (u32 app_wrk_index, u32 ls_index) +{ + app_worker_t *app_wrk; + local_session_t *ls; + app_wrk = app_worker_get (app_wrk_index); + ls = app_worker_get_local_session (app_wrk, ls_index); + return app_worker_local_session_disconnect (app_wrk_index, ls); +} + +void +app_worker_format_local_sessions (app_worker_t * app_wrk, int verbose) +{ + vlib_main_t *vm = vlib_get_main (); + app_worker_t *client_wrk; + local_session_t *ls; + transport_proto_t tp; + u8 *conn = 0; + + /* Header */ + if (app_wrk == 0) + { + vlib_cli_output (vm, "%-40s%-15s%-20s", "Connection", "ServerApp", + "ClientApp"); + return; + } + + if (!pool_elts (app_wrk->local_sessions) + && !pool_elts (app_wrk->local_connects)) + return; + + /* *INDENT-OFF* */ + pool_foreach (ls, app_wrk->local_sessions, ({ + tp = session_type_transport_proto(ls->listener_session_type); + conn = format (0, "[L][%U] *:%u", format_transport_proto_short, tp, + ls->port); + client_wrk = app_worker_get (ls->client_wrk_index); + vlib_cli_output (vm, "%-40v%-15u%-20u", conn, ls->app_index, + client_wrk->app_index); + vec_reset_length (conn); + })); + /* *INDENT-ON* */ + + vec_free (conn); +} + +void +app_worker_format_local_connects (app_worker_t * app, int verbose) +{ + vlib_main_t *vm = vlib_get_main (); + u32 app_wrk_index, session_index; + app_worker_t *server_wrk; + local_session_t *ls; + u64 client_key; + u64 value; + + /* Header */ + if (app == 0) + { + if (verbose) + vlib_cli_output (vm, "%-40s%-15s%-20s%-10s", "Connection", "App", + "Peer App", "SegManager"); + else + vlib_cli_output (vm, "%-40s%-15s%-20s", "Connection", "App", + "Peer App"); + return; + } + + if (!app->local_connects) + return; + + /* *INDENT-OFF* */ + hash_foreach (client_key, value, app->local_connects, ({ + application_client_local_connect_key_parse (client_key, &app_wrk_index, + &session_index); + server_wrk = app_worker_get (app_wrk_index); + ls = app_worker_get_local_session (server_wrk, session_index); + vlib_cli_output (vm, "%-40s%-15s%-20s", "TODO", ls->app_wrk_index, + ls->client_wrk_index); + })); + /* *INDENT-ON* */ +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |