[dpdk-users] Intel XL710, timestamping

[dpdk-users] Intel XL710, timestamping

[Filip Janiszewski]

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

Re: [dpdk-users] Intel XL710, timestamping

[Pravein GK]

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
>