User Manual

Rev 4.70

Mellanox Technologies

8 Driver Features

The Mellanox VPI WinOF driver release introduces the following capabilities:

• Support for Single and Dual port Adapters

• Up to 16 Rx queues per port

• Rx steering mode (RSS)

• Hardware Tx/Rx checksum calculation

• Large Send off-load (i.e., TCP Segmentation Off-load)

• Hardware multicast filtering

• Adaptive interrupt moderation

• Support for MSI-X interrupts

• Support for Auto-Sensing of Link level protocol

Ethernet Only:

• Hardware VLAN filtering

• Header Data Split

• RDMA over Converged Ethernet (RoCE)

• DSCP over IPv4

• RoCEv2 in ConnectX®-3 Pro

• NVGRE hardware off-load in ConnectX®-3 Pro

• Ports TX arbitration/Bandwidth allocation per port

For the complete list of Ethernet and InfiniBand Known Issues and Limitations, WinOF Release

Notes (www.mellanox.com -> Products -> InfiniBand/VPI Drivers -> Windows SW/Drivers).

8.1 Hyper-V with VMQ

Mellanox WinOF Rev 4.70 includes a Virtual Machine Queue (VMQ) interface to support

Microsoft Hyper-V network performance improvements and security enhancement.

VMQ interface supports:

• Classification of received packets by using the destination MAC address to route the

packets to different receive queues

• NIC ability to use DMA to transfer packets directly to a Hyper-V child-partition's

shared memory

• Scaling to multiple processors, by processing packets for different virtual machines on

different processors.

 To enable Hyper-V with VMQ using UI:

Step 1. Open Hyper-V Manager.

Step 2. Right-click the desired Virtual Machine (VM), and left-click Settings in the pop-up menu.

Step 3. In the Settings window, under the relevant network adapter, select “Hardware Acceleration”.

Step 4. Check/uncheck the box “Enable virtual machine queue” to enable/disable VMQ on that spe-

cific network adapter.

 To enable Hyper-V with VMQ using PowerShell: