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>

1 files changed, 189 insertions, 0 deletions

diff --git a/src/vnet/session/session_cli.c b/src/vnet/session/session_cli.c
new file mode 100644
index 00000000000..b2943a1ccc5
--- /dev/null
+++ b/src/vnet/session/session_cli.c
@@ -0,0 +1,189 @@
+/*
+ * 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>
+
+/**
+ * Format stream session as per the following format
+ *
+ * verbose:
+ *   "Connection", "Rx fifo", "Tx fifo", "Session Index"
+ * non-verbose:
+ *   "Connection"
+ */
+u8 *
+format_stream_session (u8 * s, va_list * args)
+{
+  stream_session_t *ss = va_arg (*args, stream_session_t *);
+  int verbose = va_arg (*args, int);
+  transport_proto_vft_t *tp_vft;
+  u8 *str = 0;
+
+  tp_vft = session_get_transport_vft (ss->session_type);
+
+  if (verbose)
+    str = format (0, "%-20llp%-20llp%-15lld", ss->server_rx_fifo,
+		  ss->server_tx_fifo, stream_session_get_index (ss));
+
+  if (ss->session_state == SESSION_STATE_READY)
+    {
+      s = format (s, "%-40U%v", tp_vft->format_connection,
+		  ss->connection_index, ss->thread_index, str);
+    }
+  else if (ss->session_state == SESSION_STATE_LISTENING)
+    {
+      s = format (s, "%-40U%v", tp_vft->format_listener, ss->connection_index,
+		  str);
+    }
+  else if (ss->session_state == SESSION_STATE_READY)
+    {
+      s =
+	format (s, "%-40U%v", tp_vft->format_half_open, ss->connection_index,
+		str);
+    }
+  else if (ss->session_state == SESSION_STATE_CLOSED)
+    {
+      s = format (s, "[CL] %-40U%v", tp_vft->format_connection,
+		  ss->connection_index, ss->thread_index, str);
+    }
+  else
+    {
+      clib_warning ("Session in unknown state!");
+    }
+
+  vec_free (str);
+
+  return s;
+}
+
+static clib_error_t *
+show_session_command_fn (vlib_main_t * vm, unformat_input_t * input,
+			 vlib_cli_command_t * cmd)
+{
+  session_manager_main_t *smm = &session_manager_main;
+  int verbose = 0, i;
+  stream_session_t *pool;
+  stream_session_t *s;
+  u8 *str = 0;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (input, "verbose"))
+	verbose = 1;
+      else
+	break;
+    }
+
+  for (i = 0; i < vec_len (smm->sessions); i++)
+    {
+      u32 once_per_pool;
+      pool = smm->sessions[i];
+
+      once_per_pool = 1;
+
+      if (pool_elts (pool))
+	{
+
+	  vlib_cli_output (vm, "Thread %d: %d active sessions",
+			   i, pool_elts (pool));
+	  if (verbose)
+	    {
+	      if (once_per_pool)
+		{
+		  str = format (str, "%-40s%-20s%-20s%-15s",
+				"Connection", "Rx fifo", "Tx fifo",
+				"Session Index");
+		  vlib_cli_output (vm, "%v", str);
+		  vec_reset_length (str);
+		  once_per_pool = 0;
+		}
+
+              /* *INDENT-OFF* */
+              pool_foreach (s, pool,
+              ({
+                vlib_cli_output (vm, "%U", format_stream_session, s, verbose);
+              }));
+              /* *INDENT-ON* */
+	    }
+	}
+      else
+	vlib_cli_output (vm, "Thread %d: no active sessions", i);
+    }
+  vec_free (str);
+
+  return 0;
+}
+
+VLIB_CLI_COMMAND (show_uri_command, static) =
+{
+.path = "show session",.short_help = "show session [verbose]",.function =
+    show_session_command_fn,};
+
+
+static clib_error_t *
+clear_session_command_fn (vlib_main_t * vm, unformat_input_t * input,
+			  vlib_cli_command_t * cmd)
+{
+  session_manager_main_t *smm = &session_manager_main;
+  u32 thread_index = 0;
+  u32 session_index = ~0;
+  stream_session_t *pool, *session;
+  application_t *server;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (input, "thread %d", &thread_index))
+	;
+      else if (unformat (input, "session %d", &session_index))
+	;
+      else
+	return clib_error_return (0, "unknown input `%U'",
+				  format_unformat_error, input);
+    }
+
+  if (session_index == ~0)
+    return clib_error_return (0, "session <nn> required, but not set.");
+
+  if (thread_index > vec_len (smm->sessions))
+    return clib_error_return (0, "thread %d out of range [0-%d]",
+			      thread_index, vec_len (smm->sessions));
+
+  pool = smm->sessions[thread_index];
+
+  if (pool_is_free_index (pool, session_index))
+    return clib_error_return (0, "session %d not active", session_index);
+
+  session = pool_elt_at_index (pool, session_index);
+  server = application_get (session->app_index);
+
+  /* Disconnect both app and transport */
+  server->cb_fns.session_disconnect_callback (session);
+
+  return 0;
+}
+
+VLIB_CLI_COMMAND (clear_uri_session_command, static) =
+{
+.path = "clear session",.short_help =
+    "clear session thread <thread> session <index>",.function =
+    clear_session_command_fn,};
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */