Merge branch 'nfp-XDP_TX-optimizations'

Jakub Kicinski says:

====================
nfp: optimize XDP TX and small fixes

This series optimizes the nfp XDP TX performance a little bit.
I run quick tests on an Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz.
Single core/queue performance for both touch and drop and touch and
forward is above 20Mpps @64B packets, drop being 2Mpps faster.
I think this is max for a single queue on the low power NFPs.

There are also a few minor fixes included for code in net-next.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>