NDIS_STATUS_QOS_OPERATIONAL_PARAMETERS_CHANGE
The miniport driver that supports NDIS Quality of Service (QoS) issues an NDIS_STATUS_QOS_OPERATIONAL_PARAMETERS_CHANGE status indication when its operational NDIS QoS parameters are either resolved for the first time or changed later. The miniport driver configures the network adapter with these operational parameters to perform QoS packet transmission.
When the miniport driver makes this status indication, it sets the StatusBuffer member of the NDIS_STATUS_INDICATION structure to a pointer to an NDIS_QOS_PARAMETERS structure. The driver initializes this structure with its operational NDIS QoS parameters.
Note This NDIS status indication is valid only for miniport drivers that support the IEEE 802.1 Data Center Bridging (DCB) interface.
Remarks
The miniport driver issues an NDIS_STATUS_QOS_OPERATIONAL_PARAMETERS_CHANGE status indication under the following conditions:
The miniport driver must issue an NDIS_STATUS_QOS_OPERATIONAL_PARAMETERS_CHANGE status indication after it has initially resolved its operational NDIS QoS parameters and configured the network adapter with them.
After this initial status indication, the miniport driver must issue an NDIS_STATUS_QOS_OPERATIONAL_PARAMETERS_CHANGE status indication when its operational NDIS QoS parameters are changed. This can happen when either the local or remote NDIS QoS parameters are changed.
Miniport drivers obtain the local NDIS QoS parameters from the Windows operating system when the Data Center Bridging (DCB) component (Msdcb.sys) issues an object identifier (OID) method request of OID_QOS_PARAMETERS. This OID request contains an NDIS_QOS_PARAMETERS structure that specifies the local NDIS QoS parameters.
There may be situations when the miniport driver has to override the local NDIS QoS parameters when it resolves its operational NDIS QoS parameters. This is especially true if the local QoS parameters compromise the operational QoS parameters that are being used by any underlying protocols or technologies that are currently enabled on the network adapter. For example, the driver can override the local QoS parameters if the network adapter is enabled for remote boot through the Fibre Channel over Ethernet (FCoE) protocol.
The miniport driver notifies NDIS and overlying drivers of its intention to override the local NDIS QoS parameters by issuing an NDIS_STATUS_QOS_OPERATIONAL_PARAMETERS_CHANGE status indication.
For more information, see Managing NDIS QoS Parameters.
Note Overlying drivers can use the NDIS_STATUS_QOS_OPERATIONAL_PARAMETERS_CHANGE status indication to determine the operational NDIS QoS parameters. Alternatively, these drivers can also issue OID query requests of OID_QOS_OPERATIONAL_PARAMETERS to obtain the operational NDIS QoS parameters at any time.
For information on how the miniport driver issues an NDIS_STATUS_QOS_OPERATIONAL_PARAMETERS_CHANGE status indication, see Indicating Changes to the Operational NDIS QoS Parameters.
For more information about the various types of NDIS QoS parameters, see Overview of NDIS QoS Parameters.
Requirements
Version |
Supported in NDIS 6.30 and later. |
Header |
Ndis.h (include Ndis.h) |
See also
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