netdev - Re: [PATCH net 2/2] net/sched: flower: fix error handler on replace

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Message-ID: <20230502194452.23e99a2c@kernel.org>
Date: Tue, 2 May 2023 19:44:52 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Vlad Buslov <vladbu@...dia.com>
Cc: Ivan Vecera <ivecera@...hat.com>, Simon Horman
 <simon.horman@...igine.com>, Pedro Tammela <pctammela@...atatu.com>,
 <davem@...emloft.net>, <netdev@...r.kernel.org>, <jhs@...atatu.com>,
 <xiyou.wangcong@...il.com>, <jiri@...nulli.us>,
 <marcelo.leitner@...il.com>, <paulb@...dia.com>, "Paolo Abeni"
 <pabeni@...hat.com>
Subject: Re: [PATCH net 2/2] net/sched: flower: fix error handler on replace

On Fri, 28 Apr 2023 14:03:19 +0300 Vlad Buslov wrote:
> Note that with these changes (both accepted patch and preceding diff)
> you are exposing filter to dapapath access (datapath looks up filter via
> hash table, not idr) with its handle set to 0 initially and then resent
> while already accessible. After taking a quick look at Paul's
> miss-to-action code it seems that handle value used by datapath is taken
> from struct tcf_exts_miss_cookie_node not from filter directly, so such
> approach likely doesn't break anything existing, but I might have missed
> something.

Did we deadlock in this discussion, or the issue was otherwise fixed?