dns: generic request/response detect lists

src/detect-engine.c

@@ -1854,6 +1854,10 @@ const char *DetectSigmatchListEnumToString(enum DetectSigmatchListEnum type)
 
         case DETECT_SM_LIST_DNSQUERYNAME_MATCH:
             return "dns query name";
+        case DETECT_SM_LIST_DNSREQUEST_MATCH:
+            return "dns request";
+        case DETECT_SM_LIST_DNSRESPONSE_MATCH:
+            return "dns response";
 
         case DETECT_SM_LIST_MODBUS_MATCH:
             return "modbus";

src/detect.h

@@ -120,7 +120,10 @@ enum DetectSigmatchListEnum {
 
     DETECT_SM_LIST_FILEMATCH,
 
-    DETECT_SM_LIST_DNSQUERYNAME_MATCH,
+    DETECT_SM_LIST_DNSREQUEST_MATCH,    /**< per DNS query tx match list */
+    DETECT_SM_LIST_DNSRESPONSE_MATCH,   /**< per DNS response tx match list */
+    DETECT_SM_LIST_DNSQUERYNAME_MATCH,  /**< per query in a tx list */
+
     DETECT_SM_LIST_MODBUS_MATCH,
 
     /* list for post match actions: flowbit set, flowint increment, etc */