On Fri, 30 Nov 2012 16:03:29 -0800
Eric Dumazet [off-list ref] wrote:

On Fri, 2012-11-30 at 15:47 -0800, Stephen Hemminger wrote:

quoted

My $.02 is that this would be a good place to introduce lock-free auto
resizing hash lists that are in the userspace RCU library.

It would be a non-trivial effort to put this in the kernel, but
it would let the table grow transparently.

Yes, but no ;)

The current hash is 64 slots, its not like anybody wants it to be one
million slots.

userspace rcu lfhash has min/max values.