On Tue, 2 Oct 2001, Matthew N. Dodd wrote:
> On Mon, 1 Oct 2001, Matthew Jacob wrote:
> > Yes- this may have been true for a long time - but quite a number of
> > Unix variants don't require it, so I forgot :-).. For example, neither
> > OpenBSD nor NetBSD seem to require it.
> >
> > It turns out that this is only stumbled on rarely- but if it's all the same to
> > you, a comment would help a lot.
>
> It looks like storing a pointer to struct arpcom in struct ifnet might
> solve most of the cases where ifp->if_softc == struct arpcom/struct
> ifnet. I'm not exactly sure how to deal with the miibus stuff at this
> point; the following, in mii.c:miibus_linkchg():
>
> mii = device_get_softc(dev);
> ifp = device_get_softc(parent);
>
> can be changed to:
>
> mii = device_get_softc(dev);
> ifp = mii->mii_ifp;
>
> I'm thinking we could pass struct ifnet in to mii.c:mii_phy_probe() and
> attach it to the device ivars.
>
I would think that the latter makes the most sense.
It all doesn't matter *too* much as long as what the requirements are are
reasonably documented or known.
-matt
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