// netreceivescaling.h

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;
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Windows Driver Kit DDI reference (ne-netreceivescaling-_net_adapter_receive_scaling_protocol_type)

_NET_ADAPTER_RECEIVE_SCALING_PROTOCOL_TYPE enumeration

Description

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.

Constants

`NetAdapterReceiveScalingProtocolTypeNone:0x00000000`

Unused for RSS-capable NIC client drivers.

`NetAdapterReceiveScalingProtocolTypeIPv4:0x00000001`

Indicates that the hardware can calculate hashes for IPv4 packets.

`NetAdapterReceiveScalingProtocolTypeIPv4Options:0x00000002`

Indicates that the hardware understands IPv4 options. This constant requires that NetAdapterReceiveScalingProtocolTypeIPv4 is set.

`NetAdapterReceiveScalingProtocolTypeIPv6:0x00000004`

Indicates that the hardware can calculate hashes for IPv6 packets.

`NetAdapterReceiveScalingProtocolTypeIPv6Extensions:0x00000008`

Indicates that the hardware understands IPv6 extension headers. This constant requires that NetAdapterReceiveScalingProtocolTypeIPv6 is set.

`NetAdapterReceiveScalingProtocolTypeTcp:0x00000010`

Indicates that the hardware supports 4-tuple TCP header hash calculation.

`NetAdapterReceiveScalingProtocolTypeUdp: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.

NET_ADAPTER_RECEIVE_SCALING_PROTOCOL_TYPE - NtDoc