netdev - Re: [PATCH net-next 1/3] netfilter: nf_defrag_ipv4: Add nf_ct_frag

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Message-ID: <20200706143826.GA32005@breakpoint.cc>
Date:   Mon, 6 Jul 2020 16:38:26 +0200
From:   Florian Westphal <fw@...len.de>
To:     wenxu@...oud.cn
Cc:     davem@...emloft.net, pablo@...filter.org, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org
Subject: Re: [PATCH net-next 1/3] netfilter: nf_defrag_ipv4: Add
 nf_ct_frag_gather support

wenxu@...oud.cn <wenxu@...oud.cn> wrote:
> From: wenxu <wenxu@...oud.cn>
> 
> Add nf_ct_frag_gather for conntrack defrag and it will
> elide the CB clear when packets are defragmented by
> connection tracking

Why is this patch required?
Can't you rework ip_defrag to avoid the cb clear if you need that?