Intel Ethernet X520 10GbE Dual Port KX4 Mezz User Manual

Parameter Name Valid
Range/Settings
Default Description
VMDQ 0-4 for 82575-
based adapters
0-8 for 82576-
based adapters
0 This supports enabling VMDq pools, which is needed to sup-
port SR-IOV.
This parameter is forced to 1 or more if the max_vfs module
parameter is used. In addition, the number of queues available
for RSS is limited if this is set to 1 or greater.
0 = Disabled
1 = Sets the netdev as pool 0
2 or greater = Add additional queues. However, these are cur-
rently not used.
NOTE: When either SR-IOV mode or VMDq mode is
enabled, hardware VLAN filtering and VLAN tag strip-
ping/insertion will remain enabled.
max_vfs 0-7 0 This parameter adds support for SR-IOV. It causes the driver to
spawn up to max_vfs worth of virtual function.
If the value is greater than 0, it will force the VMDQ parameter to
equal 1 or more.
NOTE: When either SR-IOV mode or VMDq mode is
enabled, hardware VLAN filtering and VLAN tag strip-
ping/insertion will remain enabled. Please remove the
old VLAN filter before the new VLAN filter is added. For
example,
ip link set eth0 vf 0 vlan 100
// set vlan 100 for VF 0
ip link set eth0 vf 0 vlan 0 //
Delete vlan 100
ip link set eth0 vf 0 vlan 200
// set a new vlan 200 for VF 0
QueuePairs 0-1 1 This option can be overridden to 1 if there are not sufficient inter-
rupts available. This can occur if any combination of RSS,
VMDQ and max_vfs results in more than 4 queues being used.
0 = When MSI-X is enabled, the TX and RX will attempt to
occupy separate vectors.
1 = TX and RX are paired onto one interrupt vector (default).
Node
0-n, where n is
the number of
the NUMA node
that should be
used to allocate
memory for this
adapter port.
-1, uses the
driver default of
allocating
memory on
whichever pro-
cessor is run-
ning modprobe.
-1 (off) The Node parameter allows you to choose which NUMA node
you want to have the adapter allocate memory from. All driver
structures, in-memory queues, and receive buffers will be alloc-
ated on the node specified. This parameter is only useful when
interrupt affinity is specified, otherwise some portion of the time
the interrupt could run on a different core than the memory is
allocated on, causing slower memory access and impacting
throughput, CPU, or both.

Intel Ethernet X520 10GbE Dual Port KX4 Mezz Specifications

General

Interface	KX4
Data Rate	10 Gbps
Form Factor	Mezzanine
Data Transfer Rate	10 Gbps
Product Type	Network Adapter
Controller	Intel 82599
PCIe Version	2.0
Virtualization	Yes
Operating Temperature	0°C to 55°C
Jumbo Frames	Supported
Ports	Dual Port