Q-Logic 8100 SERIES manual Offload Support

6–Configuring NIC Functionality in the Converged Network Adapter Configuring the NIC in a Windows Environment

Table 6-1. NIC Driver Parameters for Windows (Continued)

Parameter	Function	Default	Range	Method to Configure
Name		Value
UDPChecksumO	Computes (Tx) or verifies	Rx and Tx	Disable	Windows Property
ffloadIPv4	(Rx) the UDP checksum of	Enable	Rx Enable	Pages for QLogic
	packets for IPv4. This		Tx Enable	adapter, navigate to
	parameter can improve per-		Rx and Tx	Advanced tab or
	formance and reduce CPU		Enable	QConvergeConsole CLI
	use. With Offloading
	enabled, the adapter com-
	putes or verifies the check-
	sum for the operating
	system.
				Windows Property
UDPChecksumO	Computes (Tx) or verifies	Rx and Tx	Disable
ffloadIPv6	(Rx) the UDP checksum of	Enable	Rx Enable	Pages for QLogic
	packets for IPv6. This		Tx Enable	adapter, navigate to
	parameter can improve per-		Rx and Tx	Advanced tab or
	formance and reduce CPU		Enable	QConvergeConsole CLI
	use. With Offloading
	enabled, the adapter com-
	putes or verifies the check-
	sum for the operating
	system. Windows Server
	2008 only.
VlanID	Sets a VLAN ID on the base	0	0–4095	Windows Property
	adapter port so that all			Pages for QLogic
	frames originating from the			adapter, navigate to
	port are tagged to this			Advanced tab
	VLAN ID

Offload Support

The QLogic 8100 Series Adapter offloads the processing of several common protocols onto its hardware; this saves host CPU cycles, increases performance, and reduces CPU use. The QLogic 8100 Series Adapter supports the following offload types:

Checksum offload—The QLogic adapter supports checksum offloads for IP, TCP (IPv4, IPv6), UDP (IPv4, IPv6) packets, and the IPv4 header. The ChecksumOffloadSupport parameter is enabled by default and can be disabled on the Windows Advanced property pages for the QLogic 10Gb PCI Ethernet adapter using Windows Device Manager. For information

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