[dpdk-dev] [PATCH v2 0/3] Add rte_eth_read_clock API
barbette at kth.se
Wed Mar 27 17:08:04 CET 2019
On 2019-03-27 15:54, Wiles, Keith wrote:
> I know the API rte_eht_read_clock() is attempting to read the NIC for this timestamp, but if the PMD does not support this request can we just default to the rte_rdtsc() as a return value?
I would not advise that, because the goal of the function is to have
something that is from the same unit than the hardware timestamp given
in the mbufs.
> The current timestamp API is a mess because not all devices behave the
> same way. Trying to write an application that uses timestamping is
> very difficult.
This is different than timesync, no other devices implement hardware
timestamping. For me, it's a different feature.
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