Vineet Garg
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Re: PCIe shared memory network driver, turning off packet checksum
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Vineet Garg
07/22/2010 12:21 PM
post60317
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Re: PCIe shared memory network driver, turning off packet checksum
Just as an afterthought, in case you Enable HW offloading of checksums, doesnt that mean stack will not perform any
checksum nor check for its correctness assuming HW has done it. Whether HW actually does it or not might not be
important to the stack....
> in case you do not need socket interface or TCP traffic, then you can even
> think about implementing all required packet functionality in a driver
> module yourself...
>
> BR
> VG
>
> On Fri, Jul 9, 2010 at 2:21 AM, gary anderson <community-noreply@qnx.com>wrote:
>
> > I've implemented a network driver that uses PCIe shared memory for the
> > physical layer to support network communication over the PCIe bus between
> > multiple CPUs. Since this is a 'reliable' physical layer I would like to
> > disable packet checksums to improve performance.
> >
> > I can see that it's possible to enable hardware offload of Tx/Rx checksums
> > but does anyone know if it can be completely disabled -- don't generate and
> > don't check checksums.
> >
> >
> >
> > _______________________________________________
> >
> > Networking Drivers
> > http://community.qnx.com/sf/go/post59022
> >
> >
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