lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Sun, 8 Oct 2017 11:12:29 -0400
From:   Richard Cochran <>
To:     Brandon Streiff <>
        "David S. Miller" <>,
        Florian Fainelli <>,
        Andrew Lunn <>,
        Vivien Didelot <>,
        Erik Hons <>
Subject: Re: [PATCH net-next RFC 8/9] net: dsa: mv88e6xxx: add rx/tx
 timestamping support

On Thu, Sep 28, 2017 at 10:25:40AM -0500, Brandon Streiff wrote:
> We also utilize a feature of the "generation 3" PTP hardware that lets
> us to embed the timestamp value into one of the reserved fields in the
> PTP header. This lets us extract the timestamp out of the header and
> avoid an SMI access in the RX codepath. (This implementation does not
> presently support the older generations.)

That is fine for the later models, but we really need the code to read
over MDIO as well.  You added .ptp_support = true for those older
switches, and so the present series won't work.

If it helps, maybe I can adapt the relevant code from my driver to
your work.


Powered by blists - more mailing lists