src

pf ioctls frequently take a variable number of elements as argument.

This can potentially allow users to request very large allocations.

These will fail, but even a failing M_NOWAIT might tie up resources

and result in concurrent M_WAITOK allocations entering vm_wait and

inducing reclamation of caches.

Limit these ioctls to what should be a reasonable value, but allow

users to tune it should they need to.

Show less