linux/include/crypto/internal, branch v6.15

crypto: ahash - Disable request chaining

2025-04-12T01:33:09Z

Disable hash request chaining in case a driver that copies an ahash_request object by hand accidentally triggers chaining. Reported-by: Manorit Chawdhry Fixes: f2ffe5a9183d ("crypto: hash - Add request chaining API") Signed-off-by: Herbert Xu Tested-by: Manorit Chawdhry Signed-off-by: Herbert Xu

crypto: acomp - Add support for folios

2025-03-21T09:35:26Z

For many users, it's easier to supply a folio rather than an SG list since they already have them. Add support for folios to the acomp interface. Signed-off-by: Herbert Xu

crypto: acomp - Add ACOMP_REQUEST_ALLOC and acomp_request_alloc_extra

2025-03-21T09:33:39Z

Add ACOMP_REQUEST_ALLOC which is a wrapper around acomp_request_alloc that falls back to a synchronous stack reqeust if the allocation fails. Also add ACOMP_REQUEST_ON_STACK which stores the request on the stack only. The request should be freed with acomp_request_free. Finally add acomp_request_alloc_extra which gives the user extra memory to use in conjunction with the request. Signed-off-by: Herbert Xu

crypto: acomp - Remove dst_free

2025-03-21T09:33:39Z

Remove the unused dst_free hook. Signed-off-by: Herbert Xu

crypto: scomp - Remove support for some non-trivial SG lists

2025-03-21T09:33:39Z

As the only user of acomp/scomp uses a trivial single-page SG list, remove support for everything else in preprataion for the addition of virtual address support. However, keep support for non-trivial source SG lists as that user is currently jumping through hoops in order to linearise the source data. Limit the source SG linearisation buffer to a single page as that user never goes over that. The only other potential user is also unlikely to exceed that (IPComp) and it can easily do its own linearisation if necessary. Also keep the destination SG linearisation for IPComp. Signed-off-by: Herbert Xu

crypto: acomp - Add request chaining and virtual addresses

2025-03-15T08:21:23Z

This adds request chaining and virtual address support to the acomp interface. It is identical to the ahash interface, except that a new flag CRYPTO_ACOMP_REQ_NONDMA has been added to indicate that the virtual addresses are not suitable for DMA. This is because all existing and potential acomp users can provide memory that is suitable for DMA so there is no need for a fall-back copy path. Signed-off-by: Herbert Xu

crypto: acomp - Move stream management into scomp layer

2025-03-15T08:21:22Z

Rather than allocating the stream memory in the request object, move it into a per-cpu buffer managed by scomp. This takes the stress off the user from having to manage large request objects and setting up their own per-cpu buffers in order to do so. Signed-off-by: Herbert Xu

crypto: scomp - Remove tfm argument from alloc/free_ctx

2025-03-15T08:21:22Z

The tfm argument is completely unused and meaningless as the same stream object is identical over all transforms of a given algorithm. Remove it. Signed-off-by: Herbert Xu

crypto: skcipher - Make skcipher_walk src.virt.addr const

2025-03-15T08:21:22Z

Mark the src.virt.addr field in struct skcipher_walk as a pointer to const data. This guarantees that the user won't modify the data which should be done through dst.virt.addr to ensure that flushing is done when necessary. Signed-off-by: Herbert Xu

crypto: skcipher - Eliminate duplicate virt.addr field

2025-03-15T08:21:22Z

Reuse the addr field from struct scatter_walk for skcipher_walk. Keep the existing virt.addr fields but make them const for the user to access the mapped address. Signed-off-by: Herbert Xu