On Mon, 28 Mar 2005, Andi Kleen wrote:

So in short using mempools on receiving is not needed.

It is, because you have to ensure that the memory that's
needed to receive network packets isn't tied up receiving
packets for non-critical sockets, which would leave the
critical sockets deadlocked.

-- 
"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan