SOLVED: Degraded TCP performace on Intel PRO/1000

[Marian Durkovic]

> >   To achieve wirespeed performance, the TX FIFO must be large enough to
> > accomodate 2 jumbo packets (not just 1 as the driver was assuming).
> > There was also a typo in the driver, causing the PBA tuning on most
> > cards to be non-functional.
> > 
> >   Please be sure to use em driver version 1.7.41 or newer, either from
> > the CVS (branch RELENG_4_11) or from Intel's downloads.
> 
> Does this also apply to 5.x and above?  If no-one else responds in the
> next few days, can you please submit the patch in PR so it does not
> get lost?
> 
> Kris

All the CVS branches of if_em.c have the same bugs in the packet buffer
(PBA) code, so yes, the patch applies to all releases.

	M.