e been replaced with mbuf_lists or mbuf_queues.
>
> the reason we want mpsafe ifqueues is so we can run the network
> stack without the big lock, but still run drivers on another cpu
> (which may or may not need the big lock).
>
> we do this by adding a mutex in struct ifqueue to pr
this introduces mpsafety to ifqueue operations.
this follows on from some mopping up of (now) inappropriate use of
ifqueues and the IF_ and IFQ_ operations on them. in most cases
those ifqueues have been replaced with mbuf_lists or mbuf_queues.
the reason we want mpsafe ifqueues is so we can run
