K 10
svn:author
V 3
cem
K 8
svn:date
V 27
2018-08-17T04:40:01.212232Z
K 7
svn:log
V 502
cryptosoft: Reduce generality of supported algorithm composition

Fix a regression introduced in r336439.

Rather than allowing any linked list of algorithms, allow at most two
(typically, some combination of encrypt and/or MAC).  Removes a WAITOK
malloc in an unsleepable context (classic LOR) by placing both software
algorithm contexts within the OCF-managed session object.

Tested with 'cryptocheck -a all -d cryptosoft0', which includes some
encrypt-and-MAC modes.

PR:		230304
Reported by:	sef@

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