core: added tls_threads_mode global parameter

- control how to execute functions that may be using libssl3 behind

src/core/cfg.lex

@@ -442,6 +442,7 @@ TCP_WAIT_DATA	"tcp_wait_data"
 TCP_SCRIPT_MODE	"tcp_script_mode"
 DISABLE_TLS		"disable_tls"|"tls_disable"
 ENABLE_TLS		"enable_tls"|"tls_enable"
+TLS_THREADS_MODE	"tls_threads_mode"
 TLSLOG			"tlslog"|"tls_log"
 TLS_PORT_NO		"tls_port_no"
 TLS_METHOD		"tls_method"
@@ -960,6 +961,7 @@ IMPORTFILE      "import_file"
 <INITIAL>{TCP_SCRIPT_MODE}	{ count(); yylval.strval=yytext; return TCP_SCRIPT_MODE; }
 <INITIAL>{DISABLE_TLS}	{ count(); yylval.strval=yytext; return DISABLE_TLS; }
 <INITIAL>{ENABLE_TLS}	{ count(); yylval.strval=yytext; return ENABLE_TLS; }
+<INITIAL>{TLS_THREADS_MODE}	{ count(); yylval.strval=yytext; return TLS_THREADS_MODE; }
 <INITIAL>{TLSLOG}		{ count(); yylval.strval=yytext; return TLS_PORT_NO; }
 <INITIAL>{TLS_PORT_NO}	{ count(); yylval.strval=yytext; return TLS_PORT_NO; }
 <INITIAL>{TLS_METHOD}	{ count(); yylval.strval=yytext; return TLS_METHOD; }

src/core/cfg.y

@@ -472,6 +472,7 @@ extern char *default_routename;
 %token TCP_SCRIPT_MODE
 %token DISABLE_TLS
 %token ENABLE_TLS
+%token TLS_THREADS_MODE
 %token TLSLOG
 %token TLS_PORT_NO
 %token TLS_METHOD
@@ -1467,6 +1468,14 @@ assign_stm:
 		#endif
 	}
 	| ENABLE_TLS EQUAL error { yyerror("boolean value expected"); }
+	| TLS_THREADS_MODE EQUAL NUMBER {
+		#ifdef USE_TLS
+			ksr_tls_threads_mode = $3;
+		#else
+			warn("tls support not compiled in");
+		#endif
+	}
+	| TLS_THREADS_MODE EQUAL error { yyerror("int value expected"); }
 	| TLSLOG EQUAL NUMBER {
 		#ifdef CORE_TLS
 			tls_log=$3;

src/core/globals.h

@@ -109,6 +109,7 @@ extern int ksr_tcp_script_mode;
 #ifdef USE_TLS
 extern int tls_disable;
 extern unsigned short tls_port_no;
+extern int ksr_tls_threads_mode;
 #endif
 #ifdef USE_SCTP
 extern int sctp_disable;

src/main.c

@@ -338,8 +338,9 @@ int tcp_disable = 0;	 /* 1 if tcp is disabled */
 int tls_disable = 0; /* tls enabled by default */
 #else
 int tls_disable = 1; /* tls disabled by default */
-#endif /* CORE_TLS */
-#endif /* USE_TLS */
+#endif						  /* CORE_TLS */
+int ksr_tls_threads_mode = 0; /* threads execution mode for tls with libssl */
+#endif						  /* USE_TLS */
 #ifdef USE_SCTP
 int sctp_children_no = 0;
 int sctp_disable = 2; /* 1 if sctp is disabled, 2 if auto mode, 0 enabled */