From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Lu, Wenzhuo" <wenzhuo.lu@intel.com>
Subject: Re: Accurate timestamps in received packets
Date: Sat, 10 Oct 2015 04:52:30 +0000
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To: "Montorsi, Francesco" <fmontorsi@empirix.com>, "dev@dpdk.org"
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Hi Francesco,
Why not searching ieee1588 in the dpdk git repository?  Surely you'll find =
something.

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Montorsi, Francesco
> Sent: Friday, October 9, 2015 11:30 PM
> To: dev@dpdk.org
> Subject: [dpdk-dev] Accurate timestamps in received packets
>=20
> Hi all,
> I'm using rte_eth_rx_burst() to successfully retrieve packets from a DPDK=
-
> enabled port. I can process the packet and everything works fine. My only=
 issue
> is that I cannot find any mean to retrieve a timestamp for every single p=
acket. As
> a dirty-workaround I'm using gettimeofday() to timestamp incoming packets=
 but
> I would rather like to retrieve a more accurate and realistic timestamp f=
rom the
> Ethernet PHY layer instead. For example if I receive 32 packets in a sing=
le burst
> I'm just assigning the packets timestamp with 1ns of difference (using
> gettimeofday() for the initial time offset).
>=20
> Is there a way to retrieve a realistic timestamp from the Ethernet PHY la=
yer?
>=20
> I found this patch searching on the web:
>=20
> http://www.wand.net.nz/trac/libtrace/browser/Intel%20DPDK%20Patches/hard
> ware_timestamp.patch
> that is however related to an older DPDK version and works only for INTEL
> 82580 controllers... do you know if that simple patch linked above could =
be
> similarly ported to Intel 82599 and 82571 controllers? Is there any bette=
r/easier
> way to do that?
>=20
> Thanks a lot,
>=20
> Francesco Montorsi
>=20
>=20