[Intel-wired-lan] [PATCH net v2 2/2] igc: Fix not considering the TX delay for timestamps

[Brown, Aaron F]

> From: Intel-wired-lan <intel-wired-lan-bounces at osuosl.org> On Behalf Of
> Vinicius Costa Gomes
> Sent: Tuesday, August 18, 2020 4:40 PM
> To: intel-wired-lan at lists.osuosl.org
> Cc: Guedes, Andre <andre.guedes at intel.com>
> Subject: [Intel-wired-lan] [PATCH net v2 2/2] igc: Fix not considering the TX
> delay for timestamps
> 
> Changes from v1:
>   - Added Fixes tag
> 
> When timestamping a packet there's a delay between the start of the
> packet and the point where the hardware actually captures the
> timestamp. This difference needs to be considered if we want accurate
> timestamps.
> 
> This was done on the RX side, but not on the TX side.
> 
> Fixes: 2c344ae24501 ("igc: Add support for TX timestamping")
> Signed-off-by: Vinicius Costa Gomes <vinicius.gomes at intel.com>
> ---
>  drivers/net/ethernet/intel/igc/igc_ptp.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
Tested-by: Aaron Brown <aaron.f.brown at intel.com>