path: root/drivers/crypto
diff options
authorDavid S. Miller <davem@davemloft.net>2010-05-19 14:13:07 +1000
committerHerbert Xu <herbert@gondor.apana.org.au>2010-05-19 14:13:07 +1000
commitbf06099db18a1244957076e51847c644cfe46808 (patch)
tree80a4e17f939e4dfaf5b2c3b7180c1bd700401831 /drivers/crypto
parenta8f1a05292db8b410be47fa905669672011f0343 (diff)
crypto: skcipher - Add ablkcipher_walk interfaces
These are akin to the blkcipher_walk helpers. The main differences in the async variant are: 1) Only physical walking is supported. We can't hold on to kmap mappings across the async operation to support virtual ablkcipher_walk operations anyways. 2) Bounce buffers used for async more need to be persistent and freed at a later point in time when the async op completes. Therefore we maintain a list of writeback buffers and require that the ablkcipher_walk user call the 'complete' operation so we can copy the bounce buffers out to the real buffers and free up the bounce buffer chunks. These interfaces will be used by the new Niagara2 crypto driver. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
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