netdev - Re: [PATCH iproute2] ip fou: Pass family attribute as u8

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Message-ID: <20180107212518.gznulgt3whrcqzdx@moc6.cz>
Date:   Sun, 7 Jan 2018 22:25:18 +0100
From:   Filip Moc <dev@...6.cz>
To:     Stephen Hemminger <stephen@...workplumber.org>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH iproute2] ip fou: Pass family attribute as u8

Hi Stephen,

> How is this binary compatiable with older versions.
I'm not sure what you mean. Kernel expects family attribute to be passed as u8
(and it always did). But current ip passes family attribute as u16. It works
now only on little endian systems because the relevant byte happens to be on
the same position. It is the current version of ip which is incompatible.

Filip