kernel/linux.git/include/crypto/scatterwalk.h, branch linux-4.3.y

crypto: replace scatterwalk_sg_chain with sg_chain

2015-08-17T14:12:54+00:00

Signed-off-by: Dan Williams [hch: split from a larger patch by Dan] Signed-off-by: Christoph Hellwig Acked-by: Herbert Xu Signed-off-by: Jens Axboe

crypto: scatterwalk - Add scatterwalk_ffwd helper

2015-05-22T03:25:50+00:00

This patch adds the scatterwalk_ffwd helper which can create an SG list that starts in the middle of an existing SG list. The new list may either be part of the existing list or be a chain that latches onto part of the existing list. Signed-off-by: Herbert Xu

crypto: replace scatterwalk_sg_next with sg_next

2015-01-26T00:34:22+00:00

Modify crypto drivers to use the generic SG helper since both of them are equivalent and the one from crypto is redundant. See also: 468577abe37ff7b453a9ac613e0ea155349203ae reverted in b2ab4a57b018aafbba35bff088218f5cc3d2142e Signed-off-by: Cristian Stoica Signed-off-by: Herbert Xu

crypto: api - Move crypto_yield() to algapi.h

2014-06-20T13:26:04+00:00

It makes no sense for crypto_yield() to be defined in scatterwalk.h , move it into algapi.h as it's an internal function to crypto API. Signed-off-by: Marek Vasut Signed-off-by: Herbert Xu

crypto: scatterwalk - Use sg_chain_ptr on chain entries

2013-12-09T11:58:52+00:00

Now that scatterwalk_sg_chain sets the chain pointer bit the sg_page call in scatterwalk_sg_next hits a BUG_ON when CONFIG_DEBUG_SG is enabled. Use sg_chain_ptr instead of sg_page on a chain entry. Cc: stable@vger.kernel.org Signed-off-by: Tom Lendacky Signed-off-by: Herbert Xu

crypto: scatterwalk - Set the chain pointer indication bit

2013-11-28T14:16:24+00:00

The scatterwalk_crypto_chain function invokes the scatterwalk_sg_chain function to chain two scatterlists, but the chain pointer indication bit is not set. When the resulting scatterlist is used, for example, by sg_nents to count the number of scatterlist entries, a segfault occurs because sg_nents does not follow the chain pointer to the chained scatterlist. Update scatterwalk_sg_chain to set the chain pointer indication bit as is done by the sg_chain function. Cc: stable@vger.kernel.org Signed-off-by: Tom Lendacky Signed-off-by: Herbert Xu

crypto: scatterwalk - Add support for calculating number of SG elements

2013-08-21T11:27:58+00:00

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 Signed-off-by: Herbert Xu

crypto: remove the second argument of k[un]map_atomic()

2012-03-20T13:48:16+00:00

Signed-off-by: Cong Wang

crypto: scatterwalk - Add scatterwalk_crypto_chain helper

2010-12-02T06:47:15+00:00

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 Signed-off-by: Herbert Xu

[CRYPTO] api: Fix scatterwalk_sg_chain

2008-05-01T10:22:28+00:00

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