netdev - Re: [Patch net-next] sch_htb: redefine htb qdisc overlimits

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Message-ID: <CAM_iQpX6LZ1OFXapOJpdteSSM+fOHnC0QpnJRkexq3dVZzp_bw@mail.gmail.com>
Date:   Sat, 4 May 2019 11:27:43 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     Eric Dumazet <eric.dumazet@...il.com>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: [Patch net-next] sch_htb: redefine htb qdisc overlimits

On Sat, May 4, 2019 at 11:10 AM Eric Dumazet <edumazet@...gle.com> wrote:
>
> On Sat, May 4, 2019 at 1:49 PM Cong Wang <xiyou.wangcong@...il.com> wrote:
>
> > Sure, v2 is coming. :)
>
> Another possibility would to reuse existing sch->qstats.overlimits ?

I don't find any way to retrieve qdisc pointer from struct htb_sched,
unless we add a pointer there, which will end up bigger.

Or refactor the functions on the call path of htb_change_class_mode()
to use struct Qdisc*, which will end up a bigger patch.

Therefore, I think your suggestion of folding it into 'direct_pkts' is better.

Thanks.