linux-kernel - Re: [PATCH net-next 3/5] net: dsa: mv88e6xxx: Let taggers specify a can

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Message-ID: <20190530035112.qbn3nnoxrgum7anz@localhost>
Date:   Wed, 29 May 2019 20:51:12 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        John Stultz <john.stultz@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...nel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 3/5] net: dsa: mv88e6xxx: Let taggers specify a
 can_timestamp function

On Wed, May 29, 2019 at 11:33:31PM +0300, Vladimir Oltean wrote:
> I would like to avoid keeping meta frames in their own RX queue,
> because then I'm complicating (or rather put, making impossible) the
> association between a meta frame and the frame it holds a timestamp
> of.

We have an example of how a driver can match meta time stamp packets
with received packets.  See drivers/net/phy/dp83640.c to see how it
can be done completely within the driver.

Thanks,
Richard