Re: [dpdk-users] Intel XL710, timestamping

[Pravein GK <praveingk@gmail.com>]

Intel XL710 supports HW timestamping, however, it would work only on PTP
packets and not on normal packets.

Few things I would suggest :

1) Check if you enabled "CONFIG_RTE_LIBRTE_IEEE1588=y" in your
config/common_base when building dpdk.

2) Checkout
https://github.com/praveingk/DPTP/tree/master/dptpclient/src/dptpclient.c
on how to enable the timesync.

3) Craft the packets using similar header as
https://github.com/praveingk/DPTP/blob/master/dptpclient/src/dptp.h

I had used the same NIC, and it should work.

Thanks,
Pravein



On Wed, Mar 3, 2021 at 4:07 PM Filip Janiszewski <
contact@filipjaniszewski.com> wrote:

> Hi,
>
> Is there a way to enable HW timestamps with this Intel card using DPDK
> by means of the IEEE1588 set of function API? (Dpdk 20.08).
>
> In my understanding the nic should support hardware time-stamping of RX
> packets if: "A separate PTP application would be required that
> communicates directly with the controller on the XL710" cit from
>
> https://community.intel.com/t5/Ethernet-Products/Does-intel-XL710-QDA2-support-HW-timestamping/m-p/563064
>
> Is there a way to make this work in DPDK? I'm honestly not sure what
> does it mean exactly "communicates directly with the controller", but I
> assume it has something to do with rte_eth_timesync_* ?
>
> I've actually tried already a test, I've executed
> rte_eth_timesync_enable/rte_eth_timesync_write_time and then verified
> with rte_eth_timesync_read_rx_timestamp if the timestamp is stored, and
> it seems it's there - but the packets are all coming with 0 in the
> timestamp field (mbuf)..
>
> Thanks
>
> --
> BR, Filip
> +48 666 369 823
>