There are some high performance NICs that count statistics in hardware,
and there are ifnets, that do that via counter(9). Provide a flag that
would skip cache line trashing '+=' operation in ether_input().

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
Reviewed by:	melifaro, adrian
Approved by:	re (marius)
Fail connection upon receiving too large data segment.

Approved by:	re (glebius)
Sponsored by:	FreeBSD Foundation
Be extra paranoid with values obtained from the target.

Approved by:	re (glebius)
Sponsored by:	FreeBSD Foundation
Improve logging around some of the isci(4) reset and recovery paths.

Sponsored by:	Intel
Discussed with:	scottl
Approved by:	re (marius)
MFC after:	1 week
Explicitly pass the full path to the input file to sed.  This unbreaks
the WITHOUT_BMAKE build.

Approved by:	re (gjb)
Fix missing .

Approved by:	re (blanket)