In some email I received from Jason R Thorpe, sie wrote:
[...]
> ....I suppose another option would be to have an "mbuf initializer" macro
> that made sure all the fields were set properly... but that doesn't address
> the stack usage problem.  I suppose the stack usage hasn't been a problem so
> far, so maybe this is the best choice.
[...]

You mentioned the stack a couple of times.  The mbuf structure is
only, what 256 bytes or so ?  Is something that 'small' a concern
on the stack?

I'm pretty sure that you'll find IPFilter uses bigger structures
on the stack than that :-)

Darren