kernel/linux.git/crypto/acompress.c, branch v6.18.21Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v6.18.212025-05-05T10:20:45+00:00crypto: api - Rename CRYPTO_ALG_REQ_CHAIN to CRYPTO_ALG_REQ_VIRT2025-05-05T10:20:45+00:00Herbert Xuherbert@gondor.apana.org.au2025-05-01T12:37:32+00:00urn:sha1:8fd17374be8f220c26bec2b482cabf51ebbaed80
As chaining has been removed, all that remains of REQ_CHAIN is
just virtual address support. Rename it before the reintroduction
of batching creates confusion.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: acomp - Clone folios properly2025-05-05T10:20:45+00:00Herbert Xuherbert@gondor.apana.org.au2025-05-01T12:37:30+00:00urn:sha1:0efae411280988b43d5e5042aa047eeb276d1dac
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 <herbert@gondor.apana.org.au>
crypto: api - Add crypto_request_clone and fb2025-04-28T11:40:54+00:00Herbert Xuherbert@gondor.apana.org.au2025-04-23T09:22:28+00:00urn:sha1:19da081a28c95fe9b03ce952a2bf4a6f6bf5112c
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 <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202504230118.1CxUaUoX-lkp@intel.com/
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202504230004.c7mrY0C6-lkp@intel.com/
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: acomp - Add missing return statements in compress/decompress2025-04-19T03:18:28+00:00Herbert Xuherbert@gondor.apana.org.au2025-04-18T02:52:34+00:00urn:sha1:31b20bc22f6897a881059c0c85635966e0fd23a5
The return statements were missing which causes REQ_CHAIN algorithms
to execute twice for every request.
Reported-by: Eric Biggers <ebiggers@kernel.org>
Fixes: 64929fe8c0a4 ("crypto: acomp - Remove request chaining")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: deflate - Make the acomp walk atomic2025-04-17T02:41:47+00:00Herbert Xuherbert@gondor.apana.org.au2025-04-15T09:23:19+00:00urn:sha1:ddd0855fa3c3f1de020ab3aeddce15fe38e116f7
Add an atomic flag to the acomp walk and use that in deflate.
Due to the use of a per-cpu context, it is impossible to sleep
during the walk in deflate.
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202504151654.4c3b6393-lkp@intel.com
Fixes: 08cabc7d3c86 ("crypto: deflate - Convert to acomp")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: api - Add support for duplicating algorithms before registration2025-04-16T07:36:24+00:00Herbert Xuherbert@gondor.apana.org.au2025-04-12T05:16:43+00:00urn:sha1:f1440a90465bea1993f937ac7add592ce1e4ff44
If the bit CRYPTO_ALG_DUP_FIRST is set, an algorithm will be
duplicated by kmemdup before registration. This is inteded for
hardware-based algorithms that may be unplugged at will.
Do not use this if the algorithm data structure is embedded in a
bigger data structure. Perform the duplication in the driver
instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: acomp - Remove reqsize field2025-04-16T07:16:21+00:00Herbert Xuherbert@gondor.apana.org.au2025-04-07T10:21:09+00:00urn:sha1:300e6d6e9ebf2dcc0ca3eab68ed65207e947926c
Remove the type-specific reqsize field in favour of the common one.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: acomp - Use cra_reqsize2025-04-16T07:16:21+00:00Herbert Xuherbert@gondor.apana.org.au2025-04-07T10:21:02+00:00urn:sha1:dbad301d9f8565f0e14004c0dbbe169e09756cb9
Use the common reqsize if present.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: acomp - Simplify folio handling2025-04-16T07:16:21+00:00Herbert Xuherbert@gondor.apana.org.au2025-04-07T10:05:27+00:00urn:sha1:5f3437e9c89eec7bbf0ee5f582894d41f57528bc
Rather than storing the folio as is and handling it later, convert
it to a scatterlist right away.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: acomp - Add ACOMP_REQUEST_CLONE2025-04-16T07:16:20+00:00Herbert Xuherbert@gondor.apana.org.au2025-04-07T10:03:00+00:00urn:sha1:097c432caaa6d91f87732fe991cb08139e31101a
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 <herbert@gondor.apana.org.au>