[panic] netmap(4) and if_lagg(4)

[Harry Schmalzbauer]

 Bezüglich Harry Schmalzbauer's Nachricht vom 26.05.2017 14:22 (localtime):
> Bezüglich Vincenzo Maffione's Nachricht vom 26.05.2017 11:06 (localtime):
>> Yes, it should integrate and compile out of the box, I've done that
>> several times with FreeBSD-11.0 and 10.3.
> Impressive, it needed just a small addition to sys/conf/files to make
> the linker happy :-)

I perpared a diff to merge HEAD's netmap code to 11.1-prerelease for
further tests (preferred over replacing stable/11 code with upstream
clone, since there were some post-sync (r307394, 2016 Oct.) fixes, which
I haven't check if they are FreeBSD specific or also included upstream).

This hasn't  changed anything regarding my problems (vale-ctl -a
vale0:em0 not usable anymore: netmap_ring request size 65792 too large,
panic when adding trying to add vale0:lagg0), but hopefully make things
easier to narrow down the problems.

If anybody else is interested in closer upstream netmap code on
stable/11, here's the diff of the inofficial MFC:
ftp://ftp.omnilan.de/pub/FreeBSD/OmniLAN/misc/MFC-netmap-to-11.1-prerelease.diff

I hope I found all related commits, but I've done by hand; no idea if
there's a way to let svn do the same job...
List of repspected revisions:
r306772, r307394-r307396, r307569, r307572, r307574, r307703, r307706,
r307728, r308000, r308038, r309306, r310822, r311045, r311986, r313747,
r314915.
No guarantee that I missed something!
No tests regarding pt_netmap done yet, I just wanted to provide a better
testing platfrom!

-harry