APPLIED(B,D): [SRU] [B/D/Unstable/OEM-B/OEM-OSP1-B] [PATCH 0/2] Fix RX CRC errors on I219 v6

[Khaled Elmously]

On 2019-07-11 15:16:44 , Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1836152
> 
> [Impact]
> RX speed on Intel ethernet I219 v6 is extremely slow due to multiple RX
> CRC errors.
> 
> [Fix]
> Disable e1000e K1 feature to make I219 and PCH operate at higher speed
> to avoid the issue.
> 
> [Test]
> Before applying the patch, the RX is slower than 150Kbps. After applying
> the fix the RX speed can achive gigabits.
> 
> [Regression Potential]
> Low. This only applies to recent I219 generations.
> I've also test several other systems with e1000e and I don't see any
> regression.
> 
> Kai-Heng Feng (2):
>   e1000e: add workaround for possible stalled packet
>   e1000e: disable force K1-off feature
> 
>  drivers/net/ethernet/intel/e1000e/hw.h      |  1 +
>  drivers/net/ethernet/intel/e1000e/ich8lan.c | 13 +++++++++++++
>  drivers/net/ethernet/intel/e1000e/ich8lan.h |  2 +-
>  3 files changed, 15 insertions(+), 1 deletion(-)
> 
> -- 
> 2.17.1
> 
> 
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