netdev - Re: [PATCH v4 net-next 3/3] net/sched: sch_frag: add generic packet fragment support.

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Message-ID: <20201125111109.547c6426@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Wed, 25 Nov 2020 11:11:09 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     jhs@...atatu.com, xiyou.wangcong@...il.com
Cc:     wenxu@...oud.cn, netdev@...r.kernel.org, marcelo.leitner@...il.com,
        vladbu@...dia.com
Subject: Re: [PATCH v4 net-next 3/3] net/sched: sch_frag: add generic packet
 fragment support.

On Wed, 25 Nov 2020 12:01:23 +0800 wenxu@...oud.cn wrote:
> From: wenxu <wenxu@...oud.cn>
> 
> Currently kernel tc subsystem can do conntrack in cat_ct. But when several
> fragment packets go through the act_ct, function tcf_ct_handle_fragments
> will defrag the packets to a big one. But the last action will redirect
> mirred to a device which maybe lead the reassembly big packet over the mtu
> of target device.
> 
> This patch add support for a xmit hook to mirred, that gets executed before
> xmiting the packet. Then, when act_ct gets loaded, it configs that hook.
> The frag xmit hook maybe reused by other modules.
> 
> Signed-off-by: wenxu <wenxu@...oud.cn>

LGMT. Cong, Jamal still fine by you guys?