netdev - Re: [PATCH net-next 04/12] net: sched: add tcf_block

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Date:   Tue, 25 Jun 2019 10:31:54 +0200
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
        davem@...emloft.net, thomas.lendacky@....com, f.fainelli@...il.com,
        ariel.elior@...ium.com, michael.chan@...adcom.com,
        santosh@...lsio.com, madalin.bucur@....com,
        yisen.zhuang@...wei.com, salil.mehta@...wei.com,
        jeffrey.t.kirsher@...el.com, tariqt@...lanox.com,
        saeedm@...lanox.com, jiri@...lanox.com, idosch@...lanox.com,
        jakub.kicinski@...ronome.com, peppe.cavallaro@...com,
        grygorii.strashko@...com, andrew@...n.ch,
        vivien.didelot@...oirfairelinux.com, alexandre.torgue@...com,
        joabreu@...opsys.com, linux-net-drivers@...arflare.com,
        ganeshgr@...lsio.com, ogerlitz@...lanox.com,
        Manish.Chopra@...ium.com, marcelo.leitner@...il.com,
        mkubecek@...e.cz, venkatkumar.duvvuru@...adcom.com,
        cphealy@...il.com
Subject: Re: [PATCH net-next 04/12] net: sched: add tcf_block_setup()

On Fri, Jun 21, 2019 at 07:16:03PM +0200, Jiri Pirko wrote:
> Thu, Jun 20, 2019 at 09:49:09PM CEST, pablo@...filter.org wrote:
> 
> [...]
> 
> > 
> >+static LIST_HEAD(tcf_block_cb_list);
> 
> I still don't like the global list. Have to go throught the code more
> carefully, but why you can't pass the priv/ctx from tc/netfilter. From
> tc it would be tcf_block as it is now, from netfilter something else.

This tcf_block_cb_list should go away at some point, once drivers know
how to deal with multiple subsystems using the setup block
infrastructure. As I said in my previous email, only one can set up
the block at this stage, the ones coming later will hit busy.