From: Vladimir Oltean <olteanv@gmail.com>
To: Richard Cochran <richardcochran@gmail.com>
Cc: David Miller <davem@davemloft.net>,
Florian Fainelli <f.fainelli@gmail.com>,
Vivien Didelot <vivien.didelot@gmail.com>,
Andrew Lunn <andrew@lunn.ch>,
John Stultz <john.stultz@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Stephen Boyd <sboyd@kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
netdev <netdev@vger.kernel.org>
Subject: Re: [PATCH v3 net-next 00/17] PTP support for the SJA1105 DSA driver
Date: Wed, 5 Jun 2019 20:50:15 +0300 [thread overview]
Message-ID: <CA+h21hqeWSqZ0JmoC_w0gu+UJqCxpN7yWktRZsppe8LZ5Q_wMg@mail.gmail.com> (raw)
In-Reply-To: <20190605174547.b4rwbfrzjqzujxno@localhost>
On Wed, 5 Jun 2019 at 20:45, Richard Cochran <richardcochran@gmail.com> wrote:
>
> On Wed, Jun 05, 2019 at 02:33:52PM +0300, Vladimir Oltean wrote:
> > In the meantime: Richard, do you have any objections to this patchset?
>
> I like the fact that you didn't have to change the dsa or ptp
> frameworks this time around. I haven't taken a closer look than that
> yet.
>
> > I was wondering whether the path delay difference between E2E and P2P
> > rings any bell to you.
>
> Can it be that the switch applies corrections in HW?
>
Yes it can be. It was one of the first things I thought of.
Normally it updates the correction field with its own residence time
in 1-step L2 event messages (but I use 2 step).
It also has a bit called IGNORE2STF (ignore 2-step flag) by which it
updates the correction field in all L2 event messages (including sync,
thereby violating the spec for a switch, as far as I'm aware). But I'm
not setting it.
I also looked at egress frames with wireshark and the correction field is zero.
> Thanks,
> Richard
Thanks,
-Vladimir
next prev parent reply other threads:[~2019-06-05 17:50 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-04 17:07 [PATCH v3 net-next 00/17] PTP support for the SJA1105 DSA driver Vladimir Oltean
2019-06-04 17:07 ` [PATCH v3 net-next 01/17] net: dsa: Keep a pointer to the skb clone for TX timestamping Vladimir Oltean
2019-06-04 20:31 ` Florian Fainelli
2019-06-04 17:07 ` [PATCH v3 net-next 02/17] net: dsa: Add teardown callback for drivers Vladimir Oltean
2019-06-04 18:15 ` Andrew Lunn
2019-06-04 20:32 ` Florian Fainelli
2019-06-04 17:07 ` [PATCH v3 net-next 03/17] net: dsa: tag_8021q: Create helper function for removing VLAN header Vladimir Oltean
2019-06-04 17:07 ` [PATCH v3 net-next 04/17] net: dsa: sja1105: Move sja1105_change_tpid into sja1105_vlan_filtering Vladimir Oltean
2019-06-04 20:58 ` Florian Fainelli
2019-06-04 17:07 ` [PATCH v3 net-next 05/17] net: dsa: sja1105: Reverse TPID and TPID2 Vladimir Oltean
2019-06-04 20:33 ` Florian Fainelli
2019-06-04 17:07 ` [PATCH v3 net-next 06/17] net: dsa: sja1105: Limit use of incl_srcpt to bridge+vlan mode Vladimir Oltean
2019-06-04 20:35 ` Florian Fainelli
2019-06-04 17:07 ` [PATCH v3 net-next 07/17] net: dsa: sja1105: Add support for the PTP clock Vladimir Oltean
2019-06-04 17:07 ` [PATCH v3 net-next 08/17] net: dsa: sja1105: Move sja1105_is_link_local to include/linux Vladimir Oltean
2019-06-04 20:35 ` Florian Fainelli
2019-06-04 17:07 ` [PATCH v3 net-next 09/17] net: dsa: sja1105: Add logic for TX timestamping Vladimir Oltean
2019-06-04 17:07 ` [PATCH v3 net-next 10/17] net: dsa: sja1105: Build a minimal understanding of meta frames Vladimir Oltean
2019-06-04 21:00 ` Florian Fainelli
2019-06-04 17:07 ` [PATCH v3 net-next 11/17] net: dsa: sja1105: Add support for the AVB Parameters Table Vladimir Oltean
2019-06-04 17:07 ` [PATCH v3 net-next 12/17] net: dsa: sja1105: Make sja1105_is_link_local not match meta frames Vladimir Oltean
2019-06-04 17:07 ` [PATCH v3 net-next 13/17] net: dsa: sja1105: Receive and decode " Vladimir Oltean
2019-06-04 17:07 ` [PATCH v3 net-next 14/17] net: dsa: sja1105: Add a global sja1105_tagger_data structure Vladimir Oltean
2019-06-04 17:07 ` [PATCH v3 net-next 15/17] net: dsa: sja1105: Increase priority of CPU-trapped frames Vladimir Oltean
2019-06-04 17:07 ` [PATCH v3 net-next 16/17] net: dsa: sja1105: Add a state machine for RX timestamping Vladimir Oltean
2019-06-04 17:07 ` [PATCH v3 net-next 17/17] net: dsa: sja1105: Expose PTP timestamping ioctls to userspace Vladimir Oltean
2019-06-05 3:22 ` [PATCH v3 net-next 00/17] PTP support for the SJA1105 DSA driver David Miller
2019-06-05 9:13 ` Vladimir Oltean
2019-06-05 11:33 ` Vladimir Oltean
2019-06-05 17:45 ` Richard Cochran
2019-06-05 17:50 ` Vladimir Oltean [this message]
2019-06-05 17:52 ` Vladimir Oltean
2019-06-05 18:08 ` Vladimir Oltean
2019-06-06 3:11 ` Richard Cochran
2019-06-06 13:40 ` Vladimir Oltean
2019-06-07 3:32 ` Richard Cochran
2019-06-07 9:43 ` Vladimir Oltean
2019-06-05 18:44 ` David Miller
2019-06-07 19:15 ` David Miller
2019-06-07 19:38 ` Vladimir Oltean
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CA+h21hqeWSqZ0JmoC_w0gu+UJqCxpN7yWktRZsppe8LZ5Q_wMg@mail.gmail.com \
--to=olteanv@gmail.com \
--cc=andrew@lunn.ch \
--cc=davem@davemloft.net \
--cc=f.fainelli@gmail.com \
--cc=john.stultz@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=richardcochran@gmail.com \
--cc=sboyd@kernel.org \
--cc=tglx@linutronix.de \
--cc=vivien.didelot@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).