From: Lennert Buytenhek <redacted>
Date: Sun, 28 Sep 2008 22:46:16 +0200

This implements skb recycling, which is basically just reusing skbuffs
that have finished transmitting as receive buffers, avoiding skbuff
freeing/reallocation overhead.  This is done by having the networking
provide skb_recycle_check(), which drivers can then use in their tx
ring cleanup (example implementation for mv643xx_eth included).

I like this changes a lot, so I've added them to net-next-2.6

If there are some problems found we can fix them up, and
also merging this now will better facilitate experimentation
with other drivers.

Thanks!