kernel/linux.git/include/crypto/acompress.h, branch v6.19.11

crypto: acomp - Clone folios properly

2025-05-05T10:20:45+00:00

The folios contain references to the request itself so they must be setup again in the cloned request. Fixes: 5f3437e9c89e ("crypto: acomp - Simplify folio handling") Signed-off-by: Herbert Xu

crypto: api - Add crypto_stack_request_init and initialise flags fully

2025-04-28T11:45:26+00:00

Add a helper to initialise crypto stack requests and use it for ahash and acomp. Make sure that the flags field is initialised fully in the helper to silence false-positive warnings from the compiler. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202504250751.mdy28Ibr-lkp@intel.com/ Signed-off-by: Herbert Xu

crypto: api - Add crypto_request_clone and fb

2025-04-28T11:40:54+00:00

Add a helper to clone crypto requests and eliminate code duplication. Use kmemdup in the helper. Also add an fb field to crypto_tfm. This also happens to fix the existing implementations which were buggy. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202504230118.1CxUaUoX-lkp@intel.com/ Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202504230004.c7mrY0C6-lkp@intel.com/ Signed-off-by: Herbert Xu

crypto: acomp - Simplify folio handling

2025-04-16T07:16:21+00:00

Rather than storing the folio as is and handling it later, convert it to a scatterlist right away. Signed-off-by: Herbert Xu

crypto: acomp - Remove ACOMP_REQUEST_ALLOC

2025-04-16T07:16:20+00:00

Remove ACOMP_REQUEST_ALLOC in favour of ACOMP_REQUEST_ON_STACK with ACOMP_REQUEST_CLONE. Signed-off-by: Herbert Xu

crypto: acomp - Add ACOMP_REQUEST_CLONE

2025-04-16T07:16:20+00:00

Add a new helper ACOMP_REQUEST_CLONE that will transform a stack request into a dynamically allocated one if possible, and otherwise switch it over to the sycnrhonous fallback transform. The intended usage is: ACOMP_STACK_ON_REQUEST(req, tfm); ... err = crypto_acomp_compress(req); /* The request cannot complete synchronously. */ if (err == -EAGAIN) { /* This will not fail. */ req = ACOMP_REQUEST_CLONE(req, gfp); /* Redo operation. */ err = crypto_acomp_compress(req); } Signed-off-by: Herbert Xu

crypto: acomp - Use request flag helpers and add acomp_request_flags

2025-04-16T07:16:20+00:00

Use the newly added request flag helpers to manage the request flags. Also add acomp_request_flags which lets bottom-level users to access the request flags without the bits private to the acomp API. Signed-off-by: Herbert Xu

crypto: acomp - Remove request chaining

2025-04-16T07:16:20+00:00

Request chaining requires the user to do too much book keeping. Remove it from acomp. Signed-off-by: Herbert Xu

crypto: scomp - Allocate per-cpu buffer on first use of each CPU

2025-04-07T05:22:25+00:00

Per-cpu buffers can be wasteful when the number of CPUs is large, especially if the buffer itself is likely to never be used. Reduce such wastage by only allocating them on first use of a particular CPU. On start-up allocate a single buffer on the first possible CPU. For every other CPU a work struct will be scheduled on first use to allocate the buffer for that CPU. Until the allocation succeeds simply use the first CPU's buffer which is protected under a spin lock. Signed-off-by: Herbert Xu

crypto: acomp - Add support for folios

2025-03-21T09:35:26+00:00

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