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path: root/include/crypto/scatterwalk.h
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2013-08-21crypto: scatterwalk - Add support for calculating number of SG elementsJoel Fernandes
Crypto layer only passes nbytes to encrypt but in omap-aes driver we need to know number of SG elements to pass to dmaengine slave API. We add function for the same to scatterwalk library. Signed-off-by: Joel Fernandes <joelf@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2012-03-20crypto: remove the second argument of k[un]map_atomic()Cong Wang
Signed-off-by: Cong Wang <amwang@redhat.com>
2010-12-02crypto: scatterwalk - Add scatterwalk_crypto_chain helperSteffen Klassert
A lot of crypto algorithms implement their own chaining function. So add a generic one that can be used from all the algorithms that need scatterlist chaining. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-05-01[CRYPTO] api: Fix scatterwalk_sg_chainHerbert Xu
When I backed out of using the generic sg chaining (as it isn't currently portable) and introduced scatterwalk_sg_chain/scatterwalk_sg_next I left out the sg_is_last check in the latter. This causes it to potentially dereference beyond the end of the sg array. As most uses of scatterwalk_sg_next are bound by an overall length, this only affected the chaining code in authenc and eseqiv. Thanks to Patrick McHardy for identifying this problem. This patch also clears the "last" bit on the head of the chained list as it's no longer last. This also went missing in scatterwalk_sg_chain and is present in sg_chain. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-01-10[CRYPTO] api: Include sched.h for cond_resched in scatterwalk.hHerbert Xu
As Andrew Morton correctly points out, we need to explicitly include sched.h as we use the function cond_resched in crypto/scatterwalk.h. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-01-10[CRYPTO] scatterwalk: Restore custom sg chaining for nowHerbert Xu
Unfortunately the generic chaining hasn't been ported to all architectures yet, and notably not s390. So this patch restores the chainging that we've been using previously which does work everywhere. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-01-10[CRYPTO] scatterwalk: Move scatterwalk.h to linux/cryptoHerbert Xu
The scatterwalk infrastructure is used by algorithms so it needs to move out of crypto for future users that may live in drivers/crypto or asm/*/crypto. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>