7e92e1717e
Currently, crypto4xx CFB and OFB AES ciphers are failing testmgr's test vectors. |cfb-aes-ppc4xx encryption overran dst buffer on test vector 3, cfg="in-place" |ofb-aes-ppc4xx encryption overran dst buffer on test vector 1, cfg="in-place" This is because of a very subtile "bug" in the hardware that gets indirectly mentioned in 18.1.3.5 Encryption/Decryption of the hardware spec: the OFB and CFB modes for AES are listed there as operation modes for >>> "Block ciphers" <<<. Which kind of makes sense, but we would like them to be considered as stream ciphers just like the CTR mode. To workaround this issue and stop the hardware from causing "overran dst buffer" on crypttexts that are not a multiple of 16 (AES_BLOCK_SIZE), we force the driver to use the scatter buffers as the go-between. As a bonus this patch also kills redundant pd_uinfo->num_gd and pd_uinfo->num_sd setters since the value has already been set before. Cc: stable@vger.kernel.org Fixes: f2a13e7cba9e ("crypto: crypto4xx - enable AES RFC3686, ECB, CFB and OFB offloads") Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.