session: adding debug events

Type: feature

Enhancing the debugging capability of tcp session layer by measing time spent for various events.
This is meant only for debugging purpose

Signed-off-by: Srikanth Akula <srakula@cisco.com>
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I9f401881b345bcae5f7d8050338637fd47b3723b
Signed-off-by: Srikanth Akula <srakula@cisco.com>

1 files changed, 79 insertions, 0 deletions

diff --git a/src/vnet/session/session_cli.c b/src/vnet/session/session_cli.c
index 9f6d74c031d..563ee83c758 100644
--- a/src/vnet/session/session_cli.c
+++ b/src/vnet/session/session_cli.c
@@ -14,6 +14,7 @@
  */
 #include <vnet/session/application.h>
 #include <vnet/session/session.h>
+#include <vnet/session/session_debug.h>
 
 u8 *
 format_session_fifos (u8 * s, va_list * args)
@@ -879,6 +880,84 @@ VLIB_CLI_COMMAND (session_enable_disable_command, static) =
 };
 /* *INDENT-ON* */
 
+#if SESSION_DEBUG
+
+static clib_error_t *
+show_session_dbg_clock_cycles_fn (vlib_main_t * vm, unformat_input_t * input,
+				  vlib_cli_command_t * cmd)
+{
+  u32 thread;
+
+  if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    return clib_error_return (0, "unknown input `%U'", format_unformat_error,
+			      input);
+
+  for (thread = 0; thread < vec_len (session_dbg_main.wrk); thread++)
+    {
+      vlib_cli_output (vm, "Threads %u:\n", thread);
+      session_dbg_evts_t *sdm = &session_dbg_main.wrk[thread];
+
+#define _(sym, disp, type, str) 								         \
+  if(disp)								\
+    {									\
+      if (!type)							\
+	vlib_cli_output (vm, "\t %25s : %12lu ",                       	\
+	                 str, sdm->sess_dbg_evt_type[SESS_Q_##sym].u64);\
+      else								\
+	vlib_cli_output (vm, "\t %25s : %12.3f ",                       \
+	                 str, sdm->sess_dbg_evt_type[SESS_Q_##sym].f64);\
+    }
+
+      foreach_session_events
+#undef _
+    }
+  return 0;
+}
+
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_session_dbg_clock_cycles_command, static) =
+{
+  .path = "show session dbg clock_cycles",
+  .short_help = "show session dbg clock_cycles",
+  .function = show_session_dbg_clock_cycles_fn,
+};
+/* *INDENT-ON* */
+
+
+static clib_error_t *
+clear_session_dbg_clock_cycles_fn (vlib_main_t * vm, unformat_input_t * input,
+				   vlib_cli_command_t * cmd)
+{
+  session_dbg_evts_t *sdb;
+  u32 thread;
+
+  if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    return clib_error_return (0, "unknown input `%U'", format_unformat_error,
+			      input);
+
+  for (thread = 0; thread < vec_len (session_dbg_main.wrk); thread++)
+    {
+      sdb = &session_dbg_main.wrk[thread];
+      clib_memset (sdb, 0, sizeof (session_dbg_evts_t));
+      sdb->last_time = vlib_time_now (vlib_mains[thread]);
+    }
+
+  return 0;
+}
+
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (clear_session_clock_cycles_command, static) =
+{
+  .path = "clear session dbg clock_cycles",
+  .short_help = "clear session dbg clock_cycles",
+  .function = clear_session_dbg_clock_cycles_fn,
+};
+#endif /* #if SESSION_DEBUG */
+
+/* *INDENT-ON* */
+
 /*
  * fd.io coding-style-patch-verification: ON
  *