6.0

4 Expand Kernel Module Parameter and select the parameter of the physical function driver for creating
virtual functions.
For example, the parameter for the physical function driver of an Intel physical NIC is max_vfs.
5 Click Edit.
6 In the Value text box, type a comma-separated list of valid virtual function numbers.
Each list entry is the number of virtual functions that you want to configure for each physical function.
A value of 0 means SR-IOV will not be enabled for that physical function.
For example, if you have a dual port, set the value to
x,y
where x or y is the number of virtual functions you want to enable for a single port.
If the target number of virtual functions on a single host is 30, you might have two dual port cards set to
0,10,10,10.
NOTE The number of virtual functions supported and available for configuration depends on your
system configuration.
7 Click OK.
8 Remediate the modified host profile to the target host.
After the virtual functions become enabled on the host, the physical NIC no longer shows up as a host
network adapter in the Network Adapters list within the Configuration tab for the host. It appears in the
Advanced Settings list for the host.
What to do next
Associate a virtual function with a virtual machine as a PCI device for networking through Direct Path I/O.
Assign a Virtual Function to a Virtual Machine
To ensure that a virtual machine and a physical NIC can exchange data, you must associate a virtual
machine with one or more virtual functions.
After you enable the virtual functions on the host, each of them becomes available as a PCI device.
Launch the vSphere Client and log in to a vCenter Server system.
Prerequisites
n
Verify that the configuration of your environment supports SR-IOV. See SR-IOV Support.
n
Verify that the virtual functions exist on the host.
n
Verify that the passthrough networking device for the virtual function is active on the host.
Procedure
1 Select a virtual machine from the inventory panel of the vSphere Client.
2 Power off the virtual machine.
3 From the Inventory menu, select Virtual Machine > Edit Settings.
4 On the Resources tab, select Memory.
5 Select Unlimited.
6 On the Hardware tab, click Add.
7 Select PCI Device and click Next.
Chapter 21 Managing Network Resources
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