On Wed, 27 Mar 2002, Andrew Gallatin wrote:
>
> Archie Cobbs writes:
> > Luigi Rizzo writes:
> > > > Is if_tx_rdy() something that can be used generally or does it only
> > > > work with dummynet ?
> > >
> > > well, the function is dummynet-specific, but I would certainly like
> > > a generic callback list to be implemented in ifnet which is
> > > invoked on tx_empty events.
> >
> > Me too :-)
> >
> > > The problem as usual is that you have to touch every single device
> > > driver... Fortunately we can leave the ifnet structure unmodified
> > > because i just discovered there is an ifindex2ifnet array which is
> > > managed and can be extended to point to additional ifnet state that
> > > does not fit in the immutable one...
> >
> > Why is it important to avoid changing 'struct ifnet' ?
>
> To maintain binary compatability for commercial network drivers.
>
> Currently, network driver modules built on 4.1.1 work on all versions
> of FreeBSD through 4.5-STABLE.
>
Not QUITE true..
they ar ebroken in some cases for 4.4 amd 4.5 due to a renumberring
of SYSINIT orderings, but I fixed that and they should work in 4.6
again.. I know we hit it here with some cards we have..
I just made a small patch in teh local trees to allow us to use them.
Some cards may not hit this problem.
>
> Drew
>
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