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NET_ADAPTER_RECEIVE_SCALING_PROTOCOL_TYPE enumeration (netreceivescaling.h)

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The NET_ADAPTER_RECEIVE_SCALING_PROTOCOL_TYPE enumeration specifies the portion of received network data that an RSS-capable NIC must use to calculate an RSS hash value.

Syntax

typedef enum _NET_ADAPTER_RECEIVE_SCALING_PROTOCOL_TYPE {
  NetAdapterReceiveScalingProtocolTypeNone = 0x00000000,
  NetAdapterReceiveScalingProtocolTypeIPv4 = 0x00000001,
  NetAdapterReceiveScalingProtocolTypeIPv4Options = 0x00000002,
  NetAdapterReceiveScalingProtocolTypeIPv6 = 0x00000004,
  NetAdapterReceiveScalingProtocolTypeIPv6Extensions = 0x00000008,
  NetAdapterReceiveScalingProtocolTypeTcp = 0x00000010,
  NetAdapterReceiveScalingProtocolTypeUdp = 0x00000020
} NET_ADAPTER_RECEIVE_SCALING_PROTOCOL_TYPE;

Constants

 
NetAdapterReceiveScalingProtocolTypeNone
Value: 0x00000000
Unused for RSS-capable NIC client drivers.
NetAdapterReceiveScalingProtocolTypeIPv4
Value: 0x00000001
Indicates that the hardware can calculate hashes for IPv4 packets.
NetAdapterReceiveScalingProtocolTypeIPv4Options
Value: 0x00000002
Indicates that the hardware understands IPv4 options. This constant requires that NetAdapterReceiveScalingProtocolTypeIPv4 is set.
NetAdapterReceiveScalingProtocolTypeIPv6
Value: 0x00000004
Indicates that the hardware can calculate hashes for IPv6 packets.
NetAdapterReceiveScalingProtocolTypeIPv6Extensions
Value: 0x00000008
Indicates that the hardware understands IPv6 extension headers. This constant requires that NetAdapterReceiveScalingProtocolTypeIPv6 is set.
NetAdapterReceiveScalingProtocolTypeTcp
Value: 0x00000010
Indicates that the hardware supports 4-tuple TCP header hash calculation.
NetAdapterReceiveScalingProtocolTypeUdp
Value: 0x00000020
Indicates that the hardware supports 4-tuple UDP header hash calculation.

Remarks

The ReceiveScalingProtocolTypes member of the NET_ADAPTER_RECEIVE_SCALING_CAPABILITIES structure is a bitwise OR of NET_ADAPTER_RECEIVE_SCALING_PROTOCOL_TYPE constants. NIC client drivers can OR multiple values together to indicate which protocol types they support for RSS.

Requirements

Requirement Value
Minimum KMDF version 1.25
Header netreceivescaling.h (include netadaptercx.h)

See also

NetAdapterCx Receive Side Scaling