netdev - Re: [PATCH v2 net] openvswitch: take into account de-fragmentation/gso_size in execute_check_pkt

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Date:   Wed, 24 Jun 2020 14:35:40 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     lorenzo@...nel.org
Cc:     netdev@...r.kernel.org, pshelar@....org, nusiddiq@...hat.com,
        gvrose8192@...il.com, lorenzo.bianconi@...hat.com,
        dev@...nvswitch.org
Subject: Re: [PATCH v2 net] openvswitch: take into account
 de-fragmentation/gso_size in execute_check_pkt_len

From: Lorenzo Bianconi <lorenzo@...nel.org>
Date: Tue, 23 Jun 2020 18:33:15 +0200

> ovs connection tracking module performs de-fragmentation on incoming
> fragmented traffic. Take info account if traffic has been de-fragmented
> in execute_check_pkt_len action otherwise we will perform the wrong
> nested action considering the original packet size. This issue typically
> occurs if ovs-vswitchd adds a rule in the pipeline that requires connection
> tracking (e.g. OVN stateful ACLs) before execute_check_pkt_len action.
> Moreover take into account GSO fragment size for GSO packet in
> execute_check_pkt_len routine
> 
> Fixes: 4d5ec89fc8d14 ("net: openvswitch: Add a new action check_pkt_len")
> Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>

Applied and queued up for -stable, thank you.