netdev - Re: [PATCH v10 net-next 3/3] net/sched: act_frag: add implict packet fragment support.

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Message-ID: <CAM_iQpUu7feBGrunNPqn8FhEhgvfB_c854uEEuo5MQYcEvP_bg@mail.gmail.com>
Date:   Sat, 14 Nov 2020 10:05:39 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     wenxu <wenxu@...oud.cn>
Cc:     Jakub Kicinski <kuba@...nel.org>,
        Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
        Vlad Buslov <vladbu@...dia.com>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: [PATCH v10 net-next 3/3] net/sched: act_frag: add implict packet
 fragment support.

On Wed, Nov 11, 2020 at 9:44 PM <wenxu@...oud.cn> wrote:
> diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c
> index 9c79fb9..dff3c40 100644
> --- a/net/sched/act_ct.c
> +++ b/net/sched/act_ct.c
> @@ -1541,8 +1541,14 @@ static int __init ct_init_module(void)
>         if (err)
>                 goto err_register;
>
> +       err = tcf_set_xmit_hook(tcf_frag_xmit_hook);

Yeah, this approach is certainly much better than extending act_mirred.
Just one comment below.


> diff --git a/net/sched/act_frag.c b/net/sched/act_frag.c
> new file mode 100644
> index 0000000..3a7ab92
> --- /dev/null
> +++ b/net/sched/act_frag.c

It is kinda confusing to see this is a module. It provides some
wrappers and hooks the dev_xmit_queue(), it belongs more to
the core tc code than any modularized code. How about putting
this into net/sched/sch_generic.c?

Thanks.