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Re: Hardware checksums on bge(4) interfaces
On Tue, Sep 14, 2010 at 01:22:35PM -0400, Chris Ross wrote:
> >Yes, please see PR kern/40018 (http://gnats.netbsd.org/40018).
> Thanks for that link. Someone else mentioned that specific problem.
> Looking at that PR, however, it's still not clear if this affects bge(4)
> hardware in general (in which case, it should not be offered by the
> driver), or only specific revisions of bge(4) hardware.
Yes, it might be very well related to specific version. But how
do you tell? I wouldn't want to risk it in general.
> Does anyone have any knowledge of how to look into this? Does
> broadcom publish any sort of errata for revisions of their various
> ethernet parts?
Well, the problem is that they release new revisions of the chip
very frequently which always require re-testing, etc..
I personally replaced the bge(4) with a wm(4) which works fine
with all the checksums enabled.
> and on a related (for me) note, if I want these features on for
> devices that are part of an agr(4), should I put them on the devices
> before adding them to the agr(4), enable these options on the agr(4), or
As agr(4) handles the IP layer you must probably enable these options
on agr(4) if it supports them at all. But I don't know for sure as
I have never used agr(4).
Matthias Scheler http://zhadum.org.uk/
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