netdev - Re: [PATCH net-next v3 10/16] net: sched: prevent insertion of new classifiers during chain flush

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Message-ID: <20190205130838.GG2133@nanopsycho>
Date:   Tue, 5 Feb 2019 14:08:38 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Vlad Buslov <vladbu@...lanox.com>
Cc:     netdev@...r.kernel.org, jhs@...atatu.com, xiyou.wangcong@...il.com,
        davem@...emloft.net, ast@...nel.org, daniel@...earbox.net
Subject: Re: [PATCH net-next v3 10/16] net: sched: prevent insertion of new
 classifiers during chain flush

Mon, Feb 04, 2019 at 01:32:55PM CET, vladbu@...lanox.com wrote:
>Extend tcf_chain with 'flushing' flag. Use the flag to prevent insertion of
>new classifier instances when chain flushing is in progress in order to
>prevent resource leak when tcf_proto is created by unlocked users
>concurrently.
>
>Return EAGAIN error from tcf_chain_tp_insert_unique() to restart
>tc_new_tfilter() and lookup the chain/proto again.
>
>Signed-off-by: Vlad Buslov <vladbu@...lanox.com>

Acked-by: Jiri Pirko <jiri@...lanox.com>