7–VMware Driver Software
Driver Parameters
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83840-546-00 N
dropless_fc
The
dropless_fc
parameter is set to
1
(by default) to enable a
complementary flow control mechanism on 8400/3400 Series Adapters. The
normal flow control mechanism is to send pause frames when the on-chip buffer
(BRB) is reaching a specific level of occupancy, which is a performance-targeted
flow control mechanism. On 8400/3400 Series Adapters, you can enable a
complementary flow control mechanism to send pause frames when one or more
of the host receive buffers are exhausted.
dropless_fc
is a “zero packet drop” targeted flow control mechanism.
Set the
dropless_fc
parameter to
1
to enable the drop-less flow control
mechanism feature on all 8400/3400 Series Adapters in the system.
max_vfs
The
max_vfs
parameter indicates the number of virtual functions (VFs) to be
enabled for each PCI function. Valid values are in the range of
0–164
. A value
of
0
disables this feature. A value in the range of
1–64
indicates the number of
VFs to enable. The actual maximum VF count depends on the on 8400/3400
Series Adapters hardware.
qfle3i Driver Parameters
For a list of qlfe3i driver parameters, issue one of the following commands:
# esxcli system module parameters list -m qfle3i
# esxcfg-module -i qfle3i
To change a parameter’s value, issue one of the following commands:
#esxcli system module parameters set -m qfle3i -p <param>=<value>
#esxcfg-module -s <parameter>=<value> qfle3i
qfle3i_chip_cmd_max
The
qlfe3i_chip_cmd_max
parameter sets the maximum I/Os queued to the
8400/3400 Series Adapters. The default is
24
.
qfle3i_esx_mtu_max
The
qfle3i_esx_mtu_max
parameter sets the maximum MTU size supported
for offload sessions. Valid values are in the range of
1500–9000
. The default
is
9000
.
qfle3i_max_sectors
The
qfle3i_max_sectors
parameter sets the maximum sectors supported by
the driver. Valid values are in the range of
64–256
. Set this parameter to
–1
for
default values of
256
(10Gb) and
127
for 1Gb.
