netdev - Re: [PATCH v3 net-next 03/15] net: mscc: ocelot: store a namespaced VCAP filter ID

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Date:   Mon, 18 Jan 2021 10:00:06 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Vladimir Oltean <olteanv@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Cc:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Richard Cochran <richardcochran@...il.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Alexandru Marginean <alexandru.marginean@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Xiaoliang Yang <xiaoliang.yang_1@....com>,
        Hongbo Wang <hongbo.wang@....com>, Po Liu <po.liu@....com>,
        Yangbo Lu <yangbo.lu@....com>,
        Maxim Kochetkov <fido_max@...ox.ru>,
        Eldar Gasanov <eldargasanov2@...il.com>,
        Andrey L <al@...omtech.com>, UNGLinuxDriver@...rochip.com
Subject: Re: [PATCH v3 net-next 03/15] net: mscc: ocelot: store a namespaced
 VCAP filter ID



On 1/18/2021 8:17 AM, Vladimir Oltean wrote:
> From: Vladimir Oltean <vladimir.oltean@....com>
> 
> We will be adding some private VCAP filters that should not interfere in
> any way with the filters added using tc-flower. So we need to allocate
> some IDs which will not be used by tc.
> 
> Currently ocelot uses an u32 id derived from the flow cookie, which in
> itself is an unsigned long. This is a problem in itself, since on 64 bit
> systems, sizeof(unsigned long)=8, so the driver is already truncating
> these.
> 
> Create a struct ocelot_vcap_id which contains the full unsigned long
> cookie from tc, as well as a boolean that is supposed to namespace the
> filters added by tc with the ones that aren't.
> 
> Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>

Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian