K 10
svn:author
V 3
jtl
K 8
svn:date
V 27
2018-06-08T19:35:24.815828Z
K 7
svn:log
V 444
Add a socket destructor callback.  This allows kernel providers to set
callbacks to perform additional cleanup actions at the time a socket is
closed.

Michio Honda presented a use for this at BSDCan 2018.
(See https://www.bsdcan.org/2018/schedule/events/965.en.html .)

Submitted by:	Michio Honda <micchie at sfc.wide.ad.jp> (previous version)
Reviewed by:	lstewart (previous version)
Differential Revision:	https://reviews.freebsd.org/D15706

END