Jack Vogel wrote:
On 6/11/07, Jack Vogel <[EMAIL PROTECTED]> wrote:
On 6/11/07, Sam Leffler <[EMAIL PROTECTED]> wrote:
> Andre Oppermann wrote:
> > andre 2007-06-11 20:08:12 UTC
> >
> > FreeBSD src repository
> >
> > Modified files:
> > sys/net if.h
> > Log:
> > Add IFCAP_LRO flag for drivers to announce their TCP Large
Receive Offload
> > capabilities.
> >
> > Revision Changes Path
> > 1.108 +1 -0 src/sys/net/if.h
> > http://cvsweb.FreeBSD.org/src/sys/net/if.h.diff?r1=1.107&r2=1.108
> >
> >
> There are many offload capabilities defined that are not well thought
> out. In particular we do not distinguish between ipv4 and ipv6 for
> things like cksum and tso so there's no way to disable individual
> features. The ability to tweak LRO is clearly needed and clearly
belong
> as an ifnet capability but unilateraly deciding this is the wrong
approach.
>
> Sam
We do distinguish between TSO4 and TSO6, its just that all the pieces
for 6 arent actually there yet, you are right about the cksum
granularity,
but I'm not convinced its needed. You might be right on the need to
fine tune the functionality, but having a big ON/OFF doesnt seem a
bad thing to me.
Oh, one other useful tidbit, for Oplin when RSS is enabled you can't do
CKSUM anyway, they reuse bits.
What is Oplin?
--
Andre
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