[v5] pcapng: add user-supplied timestamp support

[Stephen Hemminger]

On Fri, 26 Jun 2026 06:22:04 -0400
Dawid Wesierski <dawid.wesierski at intel.com> wrote:

> Thanks again for the review,
> 
> For v6 I have added the input validation we ccheck if the timestamp
> PCAPNG_TSC_FLAG is not set on caller-provided input.
> 
> Regarding API versioning my concern is around source-level compatibility.
> Any application that calls rte_pcapng_copy() would need to be updated to
> pass the additional timestamp argument right?
> 
> Is breaking source-level compatibility for existing callers of
> rte_pcapng_copy() acceptable here?

DPDK does not guarantee API compatibility across releases; only ABI.
As long as there is a release note this is fine.
At this point, might have to wait for 26.11 release anyway.

Also, this is not an API that is commonly used by applications.