netdev - Re: [PATCH nf] vrf: don't run conntrack on vrf with !dflt qdisc

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Message-ID: <Ya/7b85COMY2702t@salvia>
Date:   Wed, 8 Dec 2021 01:25:19 +0100
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Nicolas Dichtel <nicolas.dichtel@...nd.com>
Cc:     fw@...len.de, lschlesinger@...venets.com, dsahern@...nel.org,
        crosser@...rage.org, netfilter-devel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH nf] vrf: don't run conntrack on vrf with !dflt qdisc

On Fri, Nov 26, 2021 at 03:36:12PM +0100, Nicolas Dichtel wrote:
> After the below patch, the conntrack attached to skb is set to "notrack" in
> the context of vrf device, for locally generated packets.
> But this is true only when the default qdisc is set to the vrf device. When
> changing the qdisc, notrack is not set anymore.
> In fact, there is a shortcut in the vrf driver, when the default qdisc is
> set, see commit dcdd43c41e60 ("net: vrf: performance improvements for
> IPv4") for more details.
> 
> This patch ensures that the behavior is always the same, whatever the qdisc
> is.
> 
> To demonstrate the difference, a new test is added in conntrack_vrf.sh.

Applied