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authorDave Barach <dave@barachs.net>2017-02-28 15:15:56 -0500
committerDamjan Marion <dmarion.lists@gmail.com>2017-03-01 20:25:48 +0000
commit68b0fb0c620c7451ef1a6380c43c39de6614db51 (patch)
treef4188fa09723152f3ebfcebbbe4cacad903e0cf1 /src/vnet/session/application.c
parentf869028740aaebeb0375077d4d84fa07a17fff1a (diff)
VPP-598: tcp stack initial commit
Change-Id: I49e5ce0aae6e4ff634024387ceaf7dbc432a0351 Signed-off-by: Dave Barach <dave@barachs.net> Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vnet/session/application.c')
-rw-r--r--src/vnet/session/application.c343
1 files changed, 343 insertions, 0 deletions
diff --git a/src/vnet/session/application.c b/src/vnet/session/application.c
new file mode 100644
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+++ b/src/vnet/session/application.c
@@ -0,0 +1,343 @@
+/*
+ * Copyright (c) 2017 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.h>
+#include <vnet/session/session.h>
+
+/*
+ * Pool from which we allocate all applications
+ */
+static application_t *app_pool;
+
+/*
+ * Hash table of apps by api client index
+ */
+static uword *app_by_api_client_index;
+
+int
+application_api_queue_is_full (application_t * app)
+{
+ unix_shared_memory_queue_t *q;
+
+ /* builtin servers are always OK */
+ if (app->api_client_index == ~0)
+ return 0;
+
+ q = vl_api_client_index_to_input_queue (app->api_client_index);
+ if (!q)
+ return 1;
+
+ if (q->cursize == q->maxsize)
+ return 1;
+ return 0;
+}
+
+static void
+application_table_add (application_t * app)
+{
+ hash_set (app_by_api_client_index, app->api_client_index, app->index);
+}
+
+static void
+application_table_del (application_t * app)
+{
+ hash_unset (app_by_api_client_index, app->api_client_index);
+}
+
+application_t *
+application_lookup (u32 api_client_index)
+{
+ uword *p;
+ p = hash_get (app_by_api_client_index, api_client_index);
+ if (p)
+ return application_get (p[0]);
+
+ return 0;
+}
+
+void
+application_del (application_t * app)
+{
+ session_manager_main_t *smm = vnet_get_session_manager_main ();
+ api_main_t *am = &api_main;
+ void *oldheap;
+ session_manager_t *sm;
+
+ if (app->mode == APP_SERVER)
+ {
+ sm = session_manager_get (app->session_manager_index);
+ session_manager_del (smm, sm);
+ }
+
+ /* Free the event fifo in the /vpe-api shared-memory segment */
+ oldheap = svm_push_data_heap (am->vlib_rp);
+ if (app->event_queue)
+ unix_shared_memory_queue_free (app->event_queue);
+ svm_pop_heap (oldheap);
+
+ application_table_del (app);
+
+ pool_put (app_pool, app);
+}
+
+application_t *
+application_new (application_type_t type, session_type_t sst,
+ u32 api_client_index, u32 flags, session_cb_vft_t * cb_fns)
+{
+ session_manager_main_t *smm = vnet_get_session_manager_main ();
+ api_main_t *am = &api_main;
+ application_t *app;
+ void *oldheap;
+ session_manager_t *sm;
+
+ pool_get (app_pool, app);
+ memset (app, 0, sizeof (*app));
+
+ /* Allocate event fifo in the /vpe-api shared-memory segment */
+ oldheap = svm_push_data_heap (am->vlib_rp);
+
+ /* Allocate server event queue */
+ app->event_queue =
+ unix_shared_memory_queue_init (128 /* nels $$$$ config */ ,
+ sizeof (session_fifo_event_t),
+ 0 /* consumer pid */ ,
+ 0
+ /* (do not) signal when queue non-empty */
+ );
+
+ svm_pop_heap (oldheap);
+
+ /* If a server, allocate session manager */
+ if (type == APP_SERVER)
+ {
+ pool_get (smm->session_managers, sm);
+ memset (sm, 0, sizeof (*sm));
+
+ app->session_manager_index = sm - smm->session_managers;
+ }
+ else if (type == APP_CLIENT)
+ {
+ /* Allocate connect session manager if needed */
+ if (smm->connect_manager_index[sst] == INVALID_INDEX)
+ connects_session_manager_init (smm, sst);
+ app->session_manager_index = smm->connect_manager_index[sst];
+ }
+
+ app->mode = type;
+ app->index = application_get_index (app);
+ app->session_type = sst;
+ app->api_client_index = api_client_index;
+ app->flags = flags;
+ app->cb_fns = *cb_fns;
+
+ /* Add app to lookup by api_client_index table */
+ application_table_add (app);
+
+ return app;
+}
+
+application_t *
+application_get (u32 index)
+{
+ return pool_elt_at_index (app_pool, index);
+}
+
+u32
+application_get_index (application_t * app)
+{
+ return app - app_pool;
+}
+
+int
+application_server_init (application_t * server, u32 segment_size,
+ u32 add_segment_size, u32 rx_fifo_size,
+ u32 tx_fifo_size, u8 ** segment_name)
+{
+ session_manager_main_t *smm = vnet_get_session_manager_main ();
+ session_manager_t *sm;
+ int rv;
+
+ sm = session_manager_get (server->session_manager_index);
+
+ /* Add first segment */
+ if ((rv = session_manager_add_first_segment (smm, sm, segment_size,
+ segment_name)))
+ {
+ return rv;
+ }
+
+ /* Setup session manager */
+ sm->add_segment_size = add_segment_size;
+ sm->rx_fifo_size = rx_fifo_size;
+ sm->tx_fifo_size = tx_fifo_size;
+ sm->add_segment = sm->add_segment_size != 0;
+ return 0;
+}
+
+u8 *
+format_application_server (u8 * s, va_list * args)
+{
+ application_t *srv = va_arg (*args, application_t *);
+ int verbose = va_arg (*args, int);
+ vl_api_registration_t *regp;
+ stream_session_t *listener;
+ u8 *server_name, *str, *seg_name;
+ u32 segment_size;
+
+ if (srv == 0)
+ {
+ if (verbose)
+ s = format (s, "%-40s%-20s%-15s%-15s%-10s", "Connection", "Server",
+ "Segment", "API Client", "Cookie");
+ else
+ s = format (s, "%-40s%-20s", "Connection", "Server");
+
+ return s;
+ }
+
+ regp = vl_api_client_index_to_registration (srv->api_client_index);
+ if (!regp)
+ server_name = format (0, "%s%c", regp->name, 0);
+ else
+ server_name = regp->name;
+
+ listener = stream_session_listener_get (srv->session_type,
+ srv->session_index);
+ str = format (0, "%U", format_stream_session, listener, verbose);
+
+ session_manager_get_segment_info (listener->server_segment_index, &seg_name,
+ &segment_size);
+ if (verbose)
+ {
+ s = format (s, "%-40s%-20s%-20s%-10d%-10d", str, server_name,
+ seg_name, srv->api_client_index, srv->accept_cookie);
+ }
+ else
+ s = format (s, "%-40s%-20s", str, server_name);
+ return s;
+}
+
+u8 *
+format_application_client (u8 * s, va_list * args)
+{
+ application_t *client = va_arg (*args, application_t *);
+ int verbose = va_arg (*args, int);
+ stream_session_t *session;
+ u8 *str, *seg_name;
+ u32 segment_size;
+
+ if (client == 0)
+ {
+ if (verbose)
+ s =
+ format (s, "%-40s%-20s%-10s", "Connection", "Segment",
+ "API Client");
+ else
+ s = format (s, "%-40s", "Connection");
+
+ return s;
+ }
+
+ session = stream_session_get (client->session_index, client->thread_index);
+ str = format (0, "%U", format_stream_session, session, verbose);
+
+ session_manager_get_segment_info (session->server_segment_index, &seg_name,
+ &segment_size);
+ if (verbose)
+ {
+ s = format (s, "%-40s%-20s%-10d%", str, seg_name,
+ client->api_client_index);
+ }
+ else
+ s = format (s, "%-40s", str);
+ return s;
+}
+
+static clib_error_t *
+show_app_command_fn (vlib_main_t * vm, unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ application_t *app;
+ int do_server = 0;
+ int do_client = 0;
+ int verbose = 0;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "server"))
+ do_server = 1;
+ else if (unformat (input, "client"))
+ do_client = 1;
+ else if (unformat (input, "verbose"))
+ verbose = 1;
+ else
+ break;
+ }
+
+ if (do_server)
+ {
+ if (pool_elts (app_pool))
+ {
+ vlib_cli_output (vm, "%U", format_application_server,
+ 0 /* header */ ,
+ verbose);
+ /* *INDENT-OFF* */
+ pool_foreach (app, app_pool,
+ ({
+ if (app->mode == APP_SERVER)
+ vlib_cli_output (vm, "%U", format_application_server, app,
+ verbose);
+ }));
+ /* *INDENT-ON* */
+ }
+ else
+ vlib_cli_output (vm, "No active server bindings");
+ }
+
+ if (do_client)
+ {
+ if (pool_elts (app_pool))
+ {
+ vlib_cli_output (vm, "%U", format_application_client,
+ 0 /* header */ ,
+ verbose);
+ /* *INDENT-OFF* */
+ pool_foreach (app, app_pool,
+ ({
+ if (app->mode == APP_CLIENT)
+ vlib_cli_output (vm, "%U", format_application_client, app,
+ verbose);
+ }));
+ /* *INDENT-ON* */
+ }
+ else
+ vlib_cli_output (vm, "No active server bindings");
+ }
+
+ return 0;
+}
+
+VLIB_CLI_COMMAND (show_app_command, static) =
+{
+.path = "show app",.short_help =
+ "show app [server|client] [verbose]",.function = show_app_command_fn,};
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */