netdev - Re: [PATCH net] core: Don't skip generic XDP program execution for cloned SKBs

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Message-Id: <20200211.170232.1486991008920101035.davem@davemloft.net>
Date:   Tue, 11 Feb 2020 17:02:32 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     toke@...hat.com
Cc:     kuba@...nel.org, john.fastabend@...il.com, brouer@...hat.com,
        netdev@...r.kernel.org, bpf@...r.kernel.org, shoracek@...hat.com,
        pabeni@...hat.com
Subject: Re: [PATCH net] core: Don't skip generic XDP program execution for
 cloned SKBs

From: Toke Høiland-Jørgensen <toke@...hat.com>
Date: Mon, 10 Feb 2020 17:10:46 +0100

> The current generic XDP handler skips execution of XDP programs entirely if
> an SKB is marked as cloned. This leads to some surprising behaviour, as
> packets can end up being cloned in various ways, which will make an XDP
> program not see all the traffic on an interface.

Yeah this has been a sort spot for a while, applied and queued up for
-stable, thanks.