QOS_OBJECT_DS_CLASS

The traffic control object QOS_OBJECT_DS_CLASS enables application developers to override the default Diffserv code point (DSCP) value for the IP packets associated with a given flow. By default, the DSCP value is derived from the flow's ServiceType.

typedef struct _QOS_DS_CLASS
{
  QOS_OBJECT_HDR  ObjectHdr;
  ULONG           DSField;
} QOS_DS_CLASS, *LPQOS_DS_CLASS;

Members

ObjectHdr

The QOS object QOS_OBJECT_HDR. The object type for this traffic control object should be QOS_OBJECT_DS_CLASS.

DSField

User priority value for the flow. The valid range is 0x00 through 0x3F. The following settings are chosen (by default) when the QOS_OBJECT_DS_CLASS traffic control object is not used.

Service types	Traffic class default value
ServiceTypeBestEffort, ServiceTypeQualitative	0
ServiceTypeControlledLoad	0x18
ServiceTypeGuaranteed	0x28
ServiceTypeNetworkControl	0x30
Non Conformant traffic	ox00

Requirements

  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Unsupported.
  Header: Declared in Traffic.h.

See Also

QOS_DIFFSERV_RULE, QOS_OBJECT_DIFFSERV, QOS_OBJECT_TRAFFIC_CLASS