linux-stable.git/include/crypto, branch linux-6.2.y

crypto: api - Add scaffolding to change completion function signature

2023-05-17T11:58:53+00:00

[ Upstream commit c35e03eaece71101ff6cbf776b86403860ac8cc3 ]

The crypto completion function currently takes a pointer to a
struct crypto_async_request object.  However, in reality the API
does not allow the use of any part of the object apart from the
data field.  For example, ahash/shash will create a fake object
on the stack to pass along a different data field.

This leads to potential bugs where the user may try to dereference
or otherwise use the crypto_async_request object.

This patch adds some temporary scaffolding so that the completion
function can take a void * instead.  Once affected users have been
converted this can be removed.

The helper crypto_request_complete will remain even after the
conversion is complete.  It should be used instead of calling
the completion function directly.

Signed-off-by: Herbert Xu 
Reviewed-by: Giovanni Cabiddu 
Signed-off-by: Herbert Xu 
Stable-dep-of: 4140aafcff16 ("crypto: engine - fix crypto_queue backlog handling")
Signed-off-by: Sasha Levin

crypto: acomp - define max size for destination

2022-12-09T10:45:00+00:00

The acomp API allows to send requests with a NULL destination buffer. In
this case, the algorithm implementation needs to allocate the
destination scatter list, perform the operation and return the buffer to
the user. For decompression, data is likely to expand and be bigger
than the allocated buffer.

Define the maximum size (128KB) that acomp implementations will allocate
for decompression operations as destination buffer when they receive a
request with a NULL destination buffer.

Suggested-by: Herbert Xu 
Signed-off-by: Giovanni Cabiddu 
Signed-off-by: Herbert Xu

crypto: api - Use linux/cache.h instead of asm/cache.h

2022-12-05T08:39:18+00:00

Directly including asm/cache.h leads to build failures on powerpc
so replace it with linux/cache.h instead.

Fixes: e634ac4a8aaa ("crypto: api - Add crypto_tfm_ctx_dma")
Reported-by: Stephen Rothwell 
Signed-off-by: Herbert Xu

crypto: kpp - Add ctx helpers with DMA alignment

2022-12-02T10:12:40+00:00

This patch adds helpers to access the kpp context structure and
request context structure with an added alignment for DMA access.

Signed-off-by: Herbert Xu

crypto: akcipher - Add ctx helpers with DMA alignment

2022-12-02T10:12:40+00:00

This patch adds helpers to access the akcipher context structure and
request context structure with an added alignment for DMA access.

Signed-off-by: Herbert Xu

crypto: api - Increase MAX_ALGAPI_ALIGNMASK to 127

2022-12-02T10:12:40+00:00

Previously we limited the maximum alignment mask to 63.  This
is mostly due to stack usage for shash.  This patch introduces
a separate limit for shash algorithms and increases the general
limit to 127 which is the value that we need for DMA allocations
on arm64.

Signed-off-by: Herbert Xu

crypto: skcipher - Add ctx helpers with DMA alignment

2022-12-02T10:12:40+00:00

This patch adds helpers to access the skcipher context structure and
request context structure with an added alignment for DMA access.

Signed-off-by: Herbert Xu

crypto: hash - Add ctx helpers with DMA alignment

2022-12-02T10:12:40+00:00

This patch adds helpers to access the ahash context structure and
request context structure with an added alignment for DMA access.

Signed-off-by: Herbert Xu

crypto: aead - Add ctx helpers with DMA alignment

2022-12-02T10:12:40+00:00

This patch adds helpers to access the aead context structure and
request context structure with an added alignment for DMA access.

Signed-off-by: Herbert Xu

crypto: api - Add crypto_tfm_ctx_dma

2022-12-02T10:12:40+00:00

This patch adds the helpers crypto_tfm_ctx_aligned and
crypto_tfm_ctx_dma.  The first aligns the tfm context to the
value cra_alignmask.  The second sets the alignment according
to dma_cache_get_alignment();

This patch also moves crypto_tfm_ctx into algapi.h.

Signed-off-by: Herbert Xu