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

Stephen Hemminger stephen at networkplumber.org
Mon Jun 8 19:09:57 CEST 2026


On Mon,  8 Jun 2026 12:40:58 -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;
> -

You can't generate valid pcapng timestamps without this.


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