linux-kernel - Re: [PATCH net] net: bcmgenet: skip invalid partial checksums

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Message-ID: <23d2d5a4-9496-a836-735d-31f1b02ce495@gmail.com>
Date:   Wed, 16 Mar 2022 18:55:54 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Doug Berger <opendmb@...il.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
        bcm-kernel-feedback-list@...adcom.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] net: bcmgenet: skip invalid partial checksums



On 3/16/2022 6:28 PM, Doug Berger wrote:
> The RXCHK block will return a partial checksum of 0 if it encounters
> a problem while receiving a packet. Since a 1's complement sum can
> only produce this result if no bits are set in the received data
> stream it is fair to treat it as an invalid partial checksum and
> not pass it up the stack.
> 
> Fixes: 810155397890 ("net: bcmgenet: use CHECKSUM_COMPLETE for NETIF_F_RXCSUM")
> Signed-off-by: Doug Berger <opendmb@...il.com>

Acked-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian