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NET_ADAPTER_OFFLOAD_RSC_CAPABILITIES structure (netadapteroffload.h)

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The NET_ADAPTER_OFFLOAD_RSC_CAPABILITIES structure describes a network interface card (NIC)'s capabilities for receive segment coalescence (RSC).

Syntax

typedef struct _NET_ADAPTER_OFFLOAD_RSC_CAPABILITIES {
  ULONG                            Size;
  NET_ADAPTER_OFFLOAD_LAYER3_FLAGS Layer3Flags;
  NET_ADAPTER_OFFLOAD_LAYER4_FLAGS Layer4Flags;
  BOOLEAN                          TcpTimestampOption;
  PFN_NET_ADAPTER_OFFLOAD_SET_RSC  EvtAdapterOffloadSetRsc;
} NET_ADAPTER_OFFLOAD_RSC_CAPABILITIES;

Members

Size

The size of this structure, in bytes.

Layer3Flags

Flags specifying the layer 3 protocols that the NIC can successfully perform RSC on. NetAdapterOffloadLayer3FlagIPv4NoOptions and NetAdapterOffloadLayer3FlagIPv6NoExtensions are the only valid values.

Layer4Flags

Flags specifying the layer 4 protocols that the NIC can successfully perform RSC on. NetAdapterOffloadLayer4FlagTcpNoOptions is the only valid value. Layer 3 flags must be set if the NetAdapterOffloadLayer4FlagTcpNoOptions flag is set.

TcpTimestampOption

Optional. A flag specifying whether the hardware can perform RSC on packets with a timestamp.

EvtAdapterOffloadSetRsc

A pointer to the client driver's implementation of the EVT_NET_ADAPTER_OFFLOAD_SET_RSC callback function.

Remarks

Call NET_ADAPTER_OFFLOAD_RSC_CAPABILITIES_INIT to initialize this structure. The client driver passes an initialized NET_ADAPTER_OFFLOAD_RSC_CAPABILITIES structure as a parameter to NetAdapterOffloadSetRscCapabilities.

To see an example of how a client driver might set up its RSC hardware offload capabilities, see Receive Segment Coalescing offload.

Requirements

Requirement Value
Minimum supported client Windows 10, version 2004
Header netadapteroffload.h (include netadaptercx.h)

See also

Receive Segment Coalescing offload

NET_ADAPTER_OFFLOAD_RSC_CAPABILITIES_INIT

NetAdapterOffloadSetRscCapabilities

EVT_NET_ADAPTER_OFFLOAD_SET_RSC