Ar Llu, 2006-10-16 am 07:26 +1000, ysgrifennodd Benjamin Herrenschmidt:
> On Sat, 2006-10-14 at 15:55 -0400, Jesse Huang wrote:
> > From: Jesse Huang <[email protected]>
> >
> > Change Logs:
> > For patent issue need to remove TxStartThresh and RxEarlyThresh. This patent
> > is cut-through patent. If use this function, Tx will start to transmit after
> > few data be move in to Tx FIFO. We are not allow to use those function in
> > DFE530/DFE550/DFE580/DL10050/IP100/IP100A. It will decrease a little
> > performance.
>
> Somebody patented FIFO thresholds ? Gack ?
3COM hold several patents on certain kinds of early interrupt/early
start for network FIFOs. At least historically they also had a GPL Linux
driver that didn't use that feature on their own cards which I'm told
was fear of patent "leakage"
Alan
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