kernel/git/stable/linux-stable.git/crypto/scatterwalk.c, branch linux-3.16.y

crypto: scatterwalk - Fix test in scatterwalk_done

2016-11-20T01:16:53+00:00

commit 5f070e81bee35f1b7bd1477bb223a873ff657803 upstream. When there is more data to be processed, the current test in scatterwalk_done may prevent us from calling pagedone even when we should. In particular, if we're on an SG entry spanning multiple pages where the last page is not a full page, we will incorrectly skip calling pagedone on the second last page. This patch fixes this by adding a separate test for whether we've reached the end of a page. Signed-off-by: Herbert Xu Signed-off-by: Ben Hutchings

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 - Fix scatterwalk_done() test

2010-05-19T04:06:29+00:00

We are done with the scattergather entry when the walk offset goes past sg->offset + sg->length, not when it crosses a page boundary. There is a similarly queer test in the second half of scatterwalk_pagedone() that probably needs some scrutiny. Signed-off-by: David S. Miller Signed-off-by: Herbert Xu

crypto: scatterwalk - Avoid flush_dcache_page on slab pages

2009-02-09T03:30:25+00:00

It's illegal to call flush_dcache_page on slab pages on a number of architectures. So this patch avoids doing so if PageSlab is true. In future we can move the flush_dcache_page call to those page cache users that actually need it. Reported-by: David S. Miller Signed-off-by: Herbert Xu

[CRYPTO] scatterwalk: Handle zero nbytes in scatterwalk_map_and_copy

2008-01-10T21:16:54+00:00

It's better to return silently than crash and burn when someone feeds us a zero length. In particular the null digest algorithm when used as part of authenc will do that to us. Signed-off-by: Herbert Xu

[CRYPTO] scatterwalk: Restore custom sg chaining for now

2008-01-10T21:16:33+00:00

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

[CRYPTO] scatterwalk: Move scatterwalk.h to linux/crypto

2008-01-10T21:16:32+00:00

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

[CRYPTO] scatterwalk: Use generic scatterlist chaining

2008-01-10T21:16:14+00:00

This patch converts the crypto scatterwalk code to use the generic scatterlist chaining rather the version specific to crypto. Signed-off-by: Herbert Xu

[SG] Update crypto/ to sg helpers

2007-10-22T17:40:16+00:00

Signed-off-by: Jens Axboe