netdev - Re: [PATCH v11 net-next 0/3] net/sched: fix over mtu packet of defrag in

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Date:   Sat, 14 Nov 2020 09:54:56 -0500
From:   Jamal Hadi Salim <jhs@...atatu.com>
To:     wenxu@...oud.cn, kuba@...nel.org, marcelo.leitner@...il.com,
        vladbu@...dia.com
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH v11 net-next 0/3] net/sched: fix over mtu packet of defrag
 in

FWIW, I see the pragmatic need for this and so; cant think
of a better way to do this. Patch one could probably go in its
own merit.
Wenxu, please Cc maintainers in the future - makes it easier
to get feedback.

Acked-by: Jamal Hadi Salim <jhs@...atatu.com>

cheers,
jamal

On 2020-11-12 4:43 a.m., wenxu@...oud.cn wrote:
> From: wenxu <wenxu@...oud.cn>
> 
> Currently kernel tc subsystem can do conntrack in act_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.
> 
> The first patch fix miss init the qdisc_skb_cb->mru
> The send one refactor the hanle of xmit in act_mirred and prepare for the
> third one
> The last one add implict packet fragment support to fix the over mtu for
> defrag in act_ct.
> 
> wenxu (3):
>    net/sched: fix miss init the mru in qdisc_skb_cb
>    net/sched: act_mirred: refactor the handle of xmit
>    net/sched: act_frag: add implict packet fragment support.
> 
>   include/net/act_api.h     |  18 +++++
>   include/net/sch_generic.h |   5 --
>   net/core/dev.c            |   2 +
>   net/sched/Kconfig         |  13 ++++
>   net/sched/Makefile        |   1 +
>   net/sched/act_api.c       |  44 +++++++++++++
>   net/sched/act_ct.c        |   7 ++
>   net/sched/act_frag.c      | 164 ++++++++++++++++++++++++++++++++++++++++++++++
>   net/sched/act_mirred.c    |  21 ++++--
>   9 files changed, 264 insertions(+), 11 deletions(-)
>   create mode 100644 net/sched/act_frag.c
>