NAT44: add support for session timeout (VPP-1272)

NAT44 (vanilla/simple and endpoint-dependent mode) now lazily delete expired
sessions. When inserting to session lookup hash and bucket is full, expired
session is overwritten.

Change-Id: Ib1b34959f60f0ca4f5b13525b1d41dd2f992288d
Signed-off-by: Matus Fabian <matfabia@cisco.com>

1 files changed, 0 insertions, 137 deletions

diff --git a/src/plugins/nat/nat64_cli.c b/src/plugins/nat/nat64_cli.c
index c2639f4fb16..efeaa0be0c2 100644
--- a/src/plugins/nat/nat64_cli.c
+++ b/src/plugins/nat/nat64_cli.c
@@ -451,107 +451,6 @@ done:
   return error;
 }
 
-static clib_error_t *
-nat64_set_timeouts_command_fn (vlib_main_t * vm, unformat_input_t * input,
-			       vlib_cli_command_t * cmd)
-{
-  unformat_input_t _line_input, *line_input = &_line_input;
-  clib_error_t *error = 0;
-  u32 timeout, tcp_trans, tcp_est, tcp_incoming_syn;
-
-  tcp_trans = nat64_get_tcp_trans_timeout ();
-  tcp_est = nat64_get_tcp_est_timeout ();
-  tcp_incoming_syn = nat64_get_tcp_incoming_syn_timeout ();
-
-  if (!unformat_user (input, unformat_line_input, line_input))
-    return 0;
-
-  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat (line_input, "udp %u", &timeout))
-	{
-	  if (nat64_set_udp_timeout (timeout))
-	    {
-	      error = clib_error_return (0, "Invalid UDP timeout value");
-	      goto done;
-	    }
-	}
-      else if (unformat (line_input, "icmp %u", &timeout))
-	{
-	  if (nat64_set_icmp_timeout (timeout))
-	    {
-	      error = clib_error_return (0, "Invalid ICMP timeout value");
-	      goto done;
-	    }
-	}
-      else if (unformat (line_input, "tcp-trans %u", &tcp_trans))
-	{
-	  if (nat64_set_tcp_timeouts (tcp_trans, tcp_est, tcp_incoming_syn))
-	    {
-	      error =
-		clib_error_return (0,
-				   "Invalid TCP transitory timeouts value");
-	      goto done;
-	    }
-	}
-      else if (unformat (line_input, "tcp-est %u", &tcp_est))
-	{
-	  if (nat64_set_tcp_timeouts (tcp_trans, tcp_est, tcp_incoming_syn))
-	    {
-	      error =
-		clib_error_return (0,
-				   "Invalid TCP established timeouts value");
-	      goto done;
-	    }
-	}
-      else
-	if (unformat (line_input, "tcp-incoming-syn %u", &tcp_incoming_syn))
-	{
-	  if (nat64_set_tcp_timeouts (tcp_trans, tcp_est, tcp_incoming_syn))
-	    {
-	      error =
-		clib_error_return (0,
-				   "Invalid TCP incoming SYN timeouts value");
-	      goto done;
-	    }
-	}
-      else if (unformat (line_input, "reset"))
-	{
-	  nat64_set_udp_timeout (0);
-	  nat64_set_icmp_timeout (0);
-	  nat64_set_tcp_timeouts (0, 0, 0);
-	}
-      else
-	{
-	  error = clib_error_return (0, "unknown input '%U'",
-				     format_unformat_error, line_input);
-	  goto done;
-	}
-    }
-
-done:
-  unformat_free (line_input);
-
-  return error;
-}
-
-static clib_error_t *
-nat64_show_timeouts_command_fn (vlib_main_t * vm, unformat_input_t * input,
-				vlib_cli_command_t * cmd)
-{
-  vlib_cli_output (vm, "NAT64 session timeouts:");
-  vlib_cli_output (vm, " UDP %usec", nat64_get_udp_timeout ());
-  vlib_cli_output (vm, " ICMP %usec", nat64_get_icmp_timeout ());
-  vlib_cli_output (vm, " TCP transitory %usec",
-		   nat64_get_tcp_trans_timeout ());
-  vlib_cli_output (vm, " TCP established %usec",
-		   nat64_get_tcp_est_timeout ());
-  vlib_cli_output (vm, " TCP incoming SYN %usec",
-		   nat64_get_tcp_incoming_syn_timeout ());
-
-  return 0;
-}
-
 typedef struct nat64_cli_st_walk_ctx_t_
 {
   vlib_main_t *vm;
@@ -946,42 +845,6 @@ VLIB_CLI_COMMAND (show_nat64_bib_command, static) = {
 
 /*?
  * @cliexpar
- * @cliexstart{set nat64 timeouts}
- * Set NAT64 session timeouts (in seconds).
- * To set NAT64 session timeoutes use use:
- *  vpp# set nat64 timeouts udp 200 icmp 30 tcp-trans 250 tcp-est 7450
- * To reset NAT64 session timeoutes to default values use:
- *  vpp# set nat64 timeouts reset
- * @cliexend
-?*/
-VLIB_CLI_COMMAND (set_nat64_timeouts_command, static) = {
-  .path = "set nat64 timeouts",
-  .short_help = "set nat64 timeouts udp <sec> icmp <sec> tcp-trans <sec> "
-                "tcp-est <sec> tcp-incoming-syn <sec> | reset",
-  .function = nat64_set_timeouts_command_fn,
-};
-
-/*?
- * @cliexpar
- * @cliexstart{show nat64 timeoutss}
- * Show NAT64 session timeouts:
- *  vpp# show nat64 timeouts
- *  NAT64 session timeouts:
- *   UDP 300sec
- *   ICMP 60sec
- *   TCP transitory 240sec
- *   TCP established 7440sec
- *   TCP incoming SYN 6sec
- * @cliexend
-?*/
-VLIB_CLI_COMMAND (show_nat64_timeouts_command, static) = {
-  .path = "show nat64 timeouts",
-  .short_help = "show nat64 timeouts",
-  .function = nat64_show_timeouts_command_fn,
-};
-
-/*?
- * @cliexpar
  * @cliexstart{show nat64 session table}
  * Show NAT64 session table.
  * To show NAT64 TCP session table use: