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

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Message-ID: <459a1453-8026-cca1-fb7c-ded0890992cf@ucloud.cn>
Date:   Sun, 15 Nov 2020 21:05:44 +0800
From:   wenxu <wenxu@...oud.cn>
To:     Cong Wang <xiyou.wangcong@...il.com>
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.


在 2020/11/15 2:05, Cong Wang 写道:
> On Wed, Nov 11, 2020 at 9:44 PM <wenxu@...oud.cn> wrote:
>> 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.

All the operations in the act_frag  are single L3 action.

So we put in a single module. to keep it as isolated/contained as possible

Maybe put this in a single file is better than a module? Buildin in the tc core code or not.

Enable this feature in Kconifg with NET_ACT_FRAG?

+config NET_ACT_FRAG
+	bool "Packet fragmentation"
+	depends on NET_CLS_ACT
+	help
+         Say Y here to allow fragmenting big packets when outputting
+         with the mirred action.
+
+	  If unsure, say N.


>