sbruno 6a3325bc68 Correct possible underflow conditions when checking for available space
in the tx h/w ring buffer.

Reviewed by:	gnn jeb.j.cramer@intel.com
MFC after:	1 week
Sponsored by:	Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D5918
2016-04-18 20:33:44 +00:00
..
2016-04-15 17:45:12 +00:00
MFH
2016-04-16 02:32:12 +00:00
2015-11-12 10:31:14 +00:00