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Date:   Thu, 11 May 2023 17:11:23 -0700
From:   Peilin Ye <yepeilin.cs@gmail.com>
To:     Jakub Kicinski <kuba@kernel.org>
Cc:     Jiri Pirko <jiri@resnulli.us>,
        Daniel Borkmann <daniel@iogearbox.net>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Paolo Abeni <pabeni@redhat.com>,
        Jamal Hadi Salim <jhs@mojatatu.com>,
        Cong Wang <xiyou.wangcong@gmail.com>,
        Peilin Ye <peilin.ye@bytedance.com>,
        John Fastabend <john.fastabend@gmail.com>,
        Vlad Buslov <vladbu@mellanox.com>,
        Pedro Tammela <pctammela@mojatatu.com>,
        Hillf Danton <hdanton@sina.com>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, Cong Wang <cong.wang@bytedance.com>
Subject: Re: [PATCH net 6/6] net/sched: qdisc_destroy() old ingress and
 clsact Qdiscs before grafting
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On Thu, May 11, 2023 at 04:46:33PM -0700, Peilin Ye wrote:
> On Thu, May 11, 2023 at 04:20:23PM -0700, Jakub Kicinski wrote:
> > > But I see your point, thanks for the suggestion!  I'll try ->init() and
> > > create v2.
> >
> > ->init() may be too early, aren't there any error points which could
> > prevent the Qdisc from binding after ->init() was called?
>
> You're right, it's in qdisc_create(), argh...

->destroy() is called for all error points between ->init() and
dev_graft_qdisc().  I'll try handling it in ->destroy().

Thanks,
Peilin Ye