On Sat, Oct 17, 2015 at 07:50:55PM +0100, Russell King - ARM Linux wrote: > The following series fixes the CAAM hash driver, allowing it to work > with the previously merged "crypto: ahash - ensure statesize is non- > zero" patch. > > This is non-trivial, because CAAM exports a huge 1600 bytes of data, > which, if we set .statesize to this, still results in the core code > rejecting the driver. So, we need to shrink the amount of state > exported. > > The first, most obvious one to get rid of is the export of the > caam_hash_ctx structure, which is shared between the socket being > exported from and imported to - copying it away and back again was > a complete no-op. > > The second is that we don't need to export both pending-bytes buffers. > Only one will be in use at any time. > > A problem was encountered while testing, where the size of the pending > bytes buffer was not added to the scatterlist with the correct length. > This is also fixed in this series, by patch 3. > > drivers/crypto/caam/caamhash.c | 79 +++++++++++++++++++++++++++++++----------- > 1 file changed, 59 insertions(+), 20 deletions(-) This series has been tested using openssl to validate the hashes against md5sum, sha1sum, sha224sum, sha256sum and sha512sum programs of every program in my /bin directory, which checks correct functioning of the hashing. It has also been tested with openssh, where the crypto hardware is used via openssl by sshd, which makes use of accept() and hence tests the export/import paths. -- FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
