ARM network trouble after recent mbuf changes

[Andrew Turner]

On Tue, 27 Aug 2013 08:53:13 +0200
Andre Oppermann <andre at freebsd.org> wrote:
> Please try the patch below to confirm.  If it fixes your problem for
> now I'm going to commit as an immediate fix while searching for a
> better long term stable solution.
> 

I tried this with a CTASSERT to check if struct m_hdr is the correct
length. In this test the size is incorrect. It appears __ILP32__ is not
defined on ARM.

I have tested a fix suggested by Hans Petter Selasky where we mark
m_hdr with __aligned(8). With this change I can netboot a PandaBoard.

Andrew