[PATCH v5] pcapng: add user-supplied timestamp support

[Stephen Hemminger]

On Wed, 24 Jun 2026 17:57:01 -0400
Dawid Wesierski <dawid.wesierski at intel.com> wrote:

> +	/*
> +	 * Use caller provided timestamp.
> +	 * If none provided, use current TSC and set flag.
> +	 */
> +	if (timestamp == 0)
> +		timestamp = rte_get_tsc_cycles() | PCAPNG_TSC_FLAG;
> +

If you are going to use high bit as flag, then probably need to 
enforce that that bit is not set on input from user.