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crypto: ccree - allow bigger than sector XTS op
authorGilad Ben-Yossef <gilad@benyossef.com>
Tue, 24 Jul 2018 14:12:46 +0000 (15:12 +0100)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 3 Aug 2018 10:06:05 +0000 (18:06 +0800)
commitf53ad3e1b35a558528f6d0041568016d1f623a9d
tree4c6f81ba55590b241c53df405f1ae43b20478a1e
parente30368f3f3ee72e20aa4b1fdb6ec2c5ddcd7e2d1
crypto: ccree - allow bigger than sector XTS op

The ccree driver had a sanity check that we are not asked
to encrypt an XTS buffer bigger than a sane sector size
since XTS IV needs to include the sector number in the IV
so this is not expected in any real use case.

Unfortunately, this breaks cryptsetup benchmark test which
has a synthetic performance test using 64k buffer of data
with the same IV.

Remove the sanity check and allow the user to hang themselves
and/or run benchmarks if they so wish.

Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
drivers/crypto/ccree/cc_cipher.c