Merge branch 'bpf-offload-fixes'

Jakub Kicinski says:

====================
This series addresses some late comments and moves checking if program
has been loaded for the correct device to the drivers.  There are also
some problems with net namespaces which I didn't take into consideration.
On the kernel side we will now simply ignore namespace moves.  Since the
user space API is not reporting any namespace identification we have to
remove the ifindex until a correct way of reporting is agreed upon.

v2:
 - fix ext ack reporting for XDP (David A);
 - add Jiri's Ack.
====================

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>