On Wed, 29 Apr 2026 03:31:10 -0400 Dawid Wesierski <[email protected]> wrote:
> From: Marek Kasiewicz <[email protected]> > > Add rte_pcapng_copy_ts() which accepts an optional timestamp parameter > in nanoseconds. When the timestamp is non-zero, it is used directly > instead of reading the TSC. This allows applications to provide > hardware PTP timestamps from the NIC, enabling accurate packet capture > with PTP-domain timing rather than host-local TSC values. Also, the HW timestamp would have to be in ns since Unix Epoch not what HW clock is. That is a hard thing to do... I would rather have the pcapng infrastructure know how to use hardware timestamp dynamic field if present. But the problem is getting the conversion right; it would have to compute offset and resolution per NIC, and NIC's roll over too fast. The problem is hard. Bottom line: needs lots more work
