FFSTPARMS

typedef struct _FFSTPARMS {
  ULONG             packet_size;
  ULONG             packet_revision_number;
  PVOID             module_name;
  ULONG             probe_ID;
  ULONG             severity;
  ULONG             template_record_ID;
  PMSGINSDATA       pMsgInsData;
  ULONG             probe_flags;
  PDUMPUSERDATA     pDumpUserData;
  ULONG             log_user_data_length;
  PVOID             log_user_data;
} FFSTPARMS;

typedef   FFSTPARMS   * PFFSTPARMS ;

Use appropriate packet_revision_number to indicate whether character data in the parameter packet is in UniCode or ASCII format.