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Date:   Thu, 13 Aug 2020 12:24:02 +0300
From:   Ido Schimmel <>
To:     Adrian Pop <>
Subject: Re: [PATCH ethtool v3] Add QSFP-DD support

On Thu, Aug 13, 2020 at 10:17:35AM +0300, Adrian Pop wrote:
> The Common Management Interface Specification (CMIS) for QSFP-DD shares
> some similarities with other form factors such as QSFP or SFP, but due to
> the fact that the module memory map is different, the current ethtool
> version is not able to provide relevant information about an interface.
> This patch adds QSFP-DD support to ethtool. The changes are similar to
> the ones already existing in qsfp.c, but customized to use the memory
> addresses and logic as defined in the specifications document.
> Several functions from qsfp.c could be reused, so an additional parameter
> was added to each and the functions were moved to sff-common.c.
> Changelog (diff from v2):
> * Remove functions assuming the existance of page 0x10 and 0x11
> * Remove structs and constants related to the page 0x10 and 0x11

Adrian, you're missing diff from v1 and Signed-off-by tag.

Please send v4 with these changes.

And please CC Michal Kubecek <> on ethtool patches since
he maintains the tool.


> ---

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