K 10
svn:author
V 3
sef
K 8
svn:date
V 27
2018-09-26T20:23:12.316441Z
K 7
svn:log
V 494
Add per-session locking to cryptosoft (swcr).

As part of ZFS Crypto, I started getting a series of panics when I did not
have AESNI loaded.  Adding locking fixed it, and I concluded that the
Reinit function altered the AES key schedule.  This locking is not as
fine-grained as it could be (AESNI uses per-cpu locking), but
it's minimally invasive.

Sponsored by: iXsystems Inc
Reviewed by: cem, mav
Approved by: re (gjb), mav (mentor)
Differential Revision: https://reviews.freebsd.org/D17307

END