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SubjectRe: [PATCH 1/2] igb.txt: Add igb documentation
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On Tue, 2010-08-03 at 17:15 -0700, Jeff Kirsher wrote:
[...]
> + Jumbo Frames
> + ------------
> + Jumbo Frames support is enabled by changing the MTU to a value larger than
> + the default of 1500. Use the ifconfig command to increase the MTU size.
> + For example:
> +
> + ifconfig eth<x> mtu 9000 up
> +
> + This setting is not saved across reboots.

Not igb-specific.

[...]
> + Ethtool
> + -------
> + The driver utilizes the ethtool interface for driver configuration and
> + diagnostics, as well as displaying statistical information. Ethtool
> + version 3.0 or later is required for this functionality, although we
> + strongly recommend downloading the latest version at:
> +
> + http://sourceforge.net/projects/gkernel.

Not igb-specific, and seriously - 3.0?

> + Enabling Wake on LAN* (WoL)
> + ---------------------------
> + WoL is configured through the Ethtool* utility.

Not igb-specific.

[...]
> + LRO
> + ---
> + Large Receive Offload (LRO) is a technique for increasing inbound throughput
> + of high-bandwidth network connections by reducing CPU overhead. It works by
> + aggregating multiple incoming packets from a single stream into a larger
> + buffer before they are passed higher up the networking stack, thus reducing
> + the number of packets that have to be processed. LRO combines multiple
> + Ethernet frames into a single receive in the stack, thereby potentially
> + decreasing CPU utilization for receives.

Not igb-specific.

> + NOTE: LRO requires 2.6.24 or later kernel version.
[...]

Which is irrelevant to an in-tree driver.

Ben.

--
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.



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