Messages in this thread | | | From | "Brown, Aaron F" <> | Subject | RE: [PATCH] igb: adjust ptp timestamps for tx/rx latency | Date | Tue, 10 May 2016 01:31:49 +0000 |
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> From: netdev-owner@vger.kernel.org [mailto:netdev- > owner@vger.kernel.org] On Behalf Of Nathan Sullivan > Sent: Tuesday, May 3, 2016 4:11 PM > To: Kirsher, Jeffrey T <jeffrey.t.kirsher@intel.com>; Brandeburg, Jesse > <jesse.brandeburg@intel.com>; Nelson, Shannon > <shannon.nelson@intel.com>; Wyborny, Carolyn > <carolyn.wyborny@intel.com>; Skidmore, Donald C > <donald.c.skidmore@intel.com>; Allan, Bruce W <bruce.w.allan@intel.com>; > Ronciak, John <john.ronciak@intel.com>; Williams, Mitch A > <mitch.a.williams@intel.com> > Cc: intel-wired-lan@lists.osuosl.org; netdev@vger.kernel.org; linux- > kernel@vger.kernel.org; Nathan Sullivan <nathan.sullivan@ni.com> > Subject: [PATCH] igb: adjust ptp timestamps for tx/rx latency > > Table 7-62 on page 338 of the i210 datasheet lists TX and RX latencies > for the various speeds the chip supports. To give better ptp timestamp > accuracy, adjust the timestamps by the amounts Intel gives based on > current link speed. > > Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com> > --- > drivers/net/ethernet/intel/igb/igb.h | 8 +++++++ > drivers/net/ethernet/intel/igb/igb_ptp.c | 36 > ++++++++++++++++++++++++++++++ > 2 files changed, 44 insertions(+)
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
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