Qlogic 3000 Series, User Manual

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6–Linux Driver Installation and Configuration
Linux QLogic Adapter Driver Options
NE0154601-00 A 6-7
The parameters are listed in Table 6-1 .
Ethtool
Utility
The
ethtool
utility checks and configures additional driver options. See the
nx_nic
Linux man pages for driver option configuration examples. See the
ethtool
Linux man pages for additional details. Here is an example command:
% ethtool -K eth[ n ] tso off
Table 6-1.
modprobe
Command Optional Parameters
Parameter Description Default Range
tx_desc
Sets the size of the command descrip-
tor rings (transmit). 1024 256–1024
(must be
power of two)
jumbo_desc_1g
Sets the size of the receive ring for
jumbo frames (1GbE ports). 1024
(x86 64 bit)
512
(x86 32 bit)
64–1024
(must be
power of two)
jumbo_desc
Sets the size of the receive ring for
jumbo frames (10GbE ports). 1024 64–1024
(must be
power of two)
rdesc_1g
Sets the size of the receive ring for
normal packets (1GbE ports)
For firmware version 4.0.
xyz , the max-
imum size is 8192.
8192
(x86 64 bit)
2048
(x86 32 bit)
64–8192
(must be
power of two)
rdesc_10g
Sets the size of the receive ring for
normal packets (10GbE ports).
For firmware version 4.0.
xyz , the max-
imum size is 8192.
8192
(x86 64 bit)
4096
(x86 32 bit)
64–8192
(must be
power of two)
use_msi
Enables MSI interrupts. 1 0: Disabled
1: Enabled
use_msi_x
Enables MSIx interrupts.
This parameter is available only in
kernel versions later than 2.6.8. When
this parameter is enabled, it takes pre-
cedence over MSI interrupts and the
use_msi
parameter is ignored.
1 0: Disabled
1: Enabled
rss_enable
Enables receive side scaling. This
parameter is available only when
MSI-X interrupts are enabled. 1 0: Disabled
1: Enabled