netdev - Re: [PATCH] net: sched: split tc_ctl

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Date:   Mon, 28 May 2018 12:02:30 -0400
From:   Jamal Hadi Salim <jhs@...atatu.com>
To:     Vlad Buslov <vladbu@...lanox.com>, netdev@...r.kernel.org
Cc:     xiyou.wangcong@...il.com, jiri@...nulli.us, davem@...emloft.net,
        kliteyn@...lanox.com
Subject: Re: [PATCH] net: sched: split tc_ctl_tfilter into three handlers

On 27/05/18 03:55 PM, Vlad Buslov wrote:
> tc_ctl_tfilter handles three netlink message types: RTM_NEWTFILTER,
> RTM_DELTFILTER, RTM_GETTFILTER. However, implementation of this function
> involves a lot of branching on specific message type because most of the
> code is message-specific. This significantly complicates adding new
> functionality and doesn't provide much benefit of code reuse.
> 
> Split tc_ctl_tfilter to three standalone functions that handle filter new,
> delete and get requests.
> 
> The only truly protocol independent part of tc_ctl_tfilter is code that
> looks up queue, class, and block. Refactor this code to standalone
> tcf_block_find function that is used by all three new handlers.
> 
> Signed-off-by: Vlad Buslov <vladbu@...lanox.com>

FWIW, I like this separation - makes things more maintainable and
readable (we should do it in act_api as well).


cheers,
jamal