netdev - Re: [PATCH net-ipsec v2] xfrm: replay: Fix ESN wrap around for GSO

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Message-ID: <20220928064907.GU566407@gauss3.secunet.de>
Date:   Wed, 28 Sep 2022 08:49:07 +0200
From:   Steffen Klassert <steffen.klassert@...unet.com>
To:     Christian Langrock <christian.langrock@...unet.com>
CC:     <herbert@...dor.apana.org.au>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-ipsec v2] xfrm: replay: Fix ESN wrap around for GSO

On Tue, Sep 27, 2022 at 02:59:50PM +0200, Christian Langrock wrote:
> When using GSO it can happen that the wrong seq_hi is used for the last
> packets before the wrap around. This can lead to double usage of a
> sequence number. To avoid this, we should serialize this last GSO
> packet.
> 
> Fixes: d7dbefc45cf5 ("xfrm: Add xfrm_replay_overflow functions for...")
> Signed-off-by: Christian Langrock <christian.langrock@...unet.com>

Some minor nits:

This is already v3, not v2 as stated in the subject line.
Also, please explain the changes between the versions
(see 'git log' for examples).

The target tree is 'ipsec', not 'net-ipsec'.

Otherwise this is a fix for a real bug. So fix the build,
incorporate the review from Leon and send a v4.

Thanks!