K 10
svn:author
V 3
zbb
K 8
svn:date
V 27
2016-02-25T14:23:02.046761Z
K 7
svn:log
V 291
Improve VNIC performance on Tx path by immediate packet transmission

Don't postpone Tx if the Tx lock can be acquired now.
This gives 3x better performance on egress.

Reviewed by:   wma
Obtained from: Semihalf
Sponsored by:  Cavium
Differential Revision: https://reviews.freebsd.org/D5325

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