[PATCH 6/7] pcapng: add user-supplied timestamp support

[Stephen Hemminger]

On Wed, 29 Apr 2026 03:31:10 -0400
Dawid Wesierski <dawid.wesierski at intel.com> wrote:

> @@ -737,16 +736,6 @@ rte_pcapng_write_packets(rte_pcapng_t *self,
>  			return -1;
>  		}
>  
> -		/*
> -		 * When data is captured by pcapng_copy the current TSC is stored.
> -		 * Adjust the value recorded in file to PCAP epoch units.
> -		 */
> -		cycles = (uint64_t)epb->timestamp_hi << 32;
> -		cycles += epb->timestamp_lo;
> -		timestamp = tsc_to_ns_epoch(&self->clock, cycles);
> -		epb->timestamp_hi = timestamp >> 32;
> -		epb->timestamp_lo = (uint32_t)timestamp;
> -
>  		/*
>  		 * Handle case of highly fragmented and large burst size
>  		 * Note: this assumes that max segments per mbuf < IOV_MAX
> diff --git a/lib/pcapng/rte_pcapng.h b/lib/pcapng/rte_pcapng.h

NAK

You need to keep the correct timestamp correction.
PCAPNG specifies times as nanoseconds since 1/1/1970.


Any new API needs a test as well.