8–Linux Driver Installation and Configuration Linux QLogic Adapter Driver Options

The parameters are listed in Table 8-1.

Table 8-1. modprobe Command Optional Parameters

Parameter

Description

Default

Range

 

 

 

 

tx_desc

Sets the size of the command descrip-

1024

256–1024

 

tor rings (transmit).

 

(must be

 

 

 

power of two)

 

 

 

 

jumbo_desc_1g

Sets the size of the receive ring for

1024

64–1024

 

jumbo frames (1GbE ports).

(x86 64-bit)

(must be

 

 

512

power of two)

 

 

 

 

 

(x86 32-bit)

 

 

 

 

 

jumbo_desc

Sets the size of the receive ring for

1024

64–1024

 

jumbo frames (10GbE ports).

 

(must be

 

 

 

power of two)

 

 

 

 

rdesc_1g

Sets the size of the receive ring for

8192

64–8192

 

normal packets (1GbE ports).

(x86 64-bit)

(must be

 

For firmware version 4.0.xyz, the max-

2048

power of two)

 

 

 

imum size is 8192.

(x86 32-bit)

 

 

 

 

 

rdesc_10g

Sets the size of the receive ring for

8192

64–8192

 

normal packets (10GbE ports).

(x86 64-bit)

(must be

 

For firmware version 4.0.xyz, the max-

4096

power of two)

 

 

 

imum size is 8192.

(x86 32-bit)

 

 

 

 

 

use_msi

Enables MSI interrupts.

1

0: Disabled

 

 

 

1: Enabled

 

 

 

 

use_msi_x

Enables MSIx interrupts.

1

0: Disabled

 

This parameter is available only in

 

1: Enabled

 

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.

 

 

rss_enable

Enables receive side scaling. This

1

0: Disabled

 

parameter is available only when

 

1: Enabled

 

MSI-X interrupts are enabled.

 

 

 

 

 

 

 

 

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

NE0154601-00 B

8-7

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Q-Logic 3000 Modprobe Command Optional Parameters, Parameters are listed in Table, Parameter Description Default Range
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3000, 3100 specifications

The Q-Logic 3100 and 3000 series are advanced networking solutions designed for high-performance data centers and enterprise environments. Known for their innovative technology, these switches and adapters are tailored for seamless integration in modern computing infrastructures, offering scalability and robustness essential for today's demanding applications.

One of the standout features of the Q-Logic 3100 and 3000 series is their support for high-speed data transmission, reaching up to 16 Gbps in Fibre Channel connections. This capability ensures minimal latency and exceptional throughput, which is critical for applications that require rapid data access and processing, like virtualization and cloud computing.

Both series incorporate cutting-edge virtualization technologies, enabling multiple environments to be managed efficiently through a single physical instance. This support for virtualization reduces hardware costs and maximizes resource utilization, a vital aspect for organizations looking to optimize their IT investments. Additionally, the series provides enhanced Quality of Service (QoS) features, which prioritize data traffic and ensure stable performance across various applications.

Security is another primary concern addressed by the Q-Logic 3100 and 3000 series. They offer advanced security features, including hardware-based encryption, which protects data in transit and at rest. Access control mechanisms are in place to prevent unauthorized access, making these solutions suitable for organizations that handle sensitive information.

The Q-Logic 3100 and 3000 series are built with reliability in mind. They include built-in redundancy features, such as dual power supplies and hot-swappable components, which reduce the risk of system failure and improve overall uptime. This reliability is crucial for businesses that operate around the clock, as downtime can lead to significant financial losses.

Configuration and management of the Q-Logic series are simplified through user-friendly interfaces and comprehensive management tools. These tools allow administrators to monitor performance, configure settings, and troubleshoot issues efficiently, thereby enhancing operational productivity.

In summary, the Q-Logic 3100 and 3000 series stand out as exemplary solutions for high-performance networking needs. With their impressive speed, support for virtualization, strong security features, and robust reliability, these products continue to solidify their position as leaders in the networking technology landscape. As businesses evolve and grow, these innovative solutions are poised to adapt and meet the challenges of the future.
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