netdev - Re: [PATCH net 1/1] net/sched: act_ct: Fix flow table lookup failure with no originating ifindex

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Date:   Thu, 17 Feb 2022 20:16:03 -0300
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     Paul Blakey <paulb@...dia.com>
Cc:     dev@...nvswitch.org, netdev@...r.kernel.org,
        Jamal Hadi Salim <jhs@...atatu.com>, davem@...emloft.net,
        Jiri Pirko <jiri@...dia.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        netfilter-devel@...r.kernel.org,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Oz Shlomo <ozsh@...dia.com>, Vlad Buslov <vladbu@...dia.com>,
        Roi Dayan <roid@...dia.com>,
        Ariel Levkovich <lariel@...dia.com>, coreteam@...filter.org
Subject: Re: [PATCH net 1/1] net/sched: act_ct: Fix flow table lookup failure
 with no originating ifindex

On Thu, Feb 17, 2022 at 11:34:24AM +0200, Paul Blakey wrote:
> After cited commit optimizted hw insertion, flow table entries are
> populated with ifindex information which was intended to only be used
> for HW offload. This tuple ifindex is hashed in the flow table key, so
> it must be filled for lookup to be successful. But tuple ifindex is only
> relevant for the netfilter flowtables (nft), so it's not filled in
> act_ct flow table lookup, resulting in lookup failure, and no SW
> offload and no offload teardown for TCP connection FIN/RST packets.
> 
> To fix this, allow flow tables that don't hash the ifindex.
> Netfilter flow tables will keep using ifindex for a more specific
> offload, while act_ct will not.
> 
> Fixes: 9795ded7f924 ("net/sched: act_ct: Fill offloading tupledx")

The fixes tag got corrupted. It should have been:
Fixes: 9795ded7f924 ("net/sched: act_ct: Fill offloading tuple iifidx")

Not sure if it needs a respin or not, but:
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>

> Signed-off-by: Paul Blakey <paulb@...dia.com>
> ---