Re: [PATCH v28 07/12] LRNG - add kernel crypto API PRNG extension

[Randy Dunlap]

On 1/15/20 2:34 AM, Stephan MÃller wrote:
> 
> CC: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
> CC: "Alexander E. Patrakov" <patrakov@xxxxxxxxx>
> CC: "Ahmed S. Darwish" <darwish.07@xxxxxxxxx>
> CC: "Theodore Y. Ts'o" <tytso@xxxxxxx>
> CC: Willy Tarreau <w@xxxxxx>
> CC: Matthew Garrett <mjg59@xxxxxxxxxxxxx>
> CC: Vito Caputo <vcaputo@xxxxxxxxxxx>
> CC: Andreas Dilger <adilger.kernel@xxxxxxxxx>
> CC: Jan Kara <jack@xxxxxxx>
> CC: Ray Strode <rstrode@xxxxxxxxxx>
> CC: William Jon McCann <mccann@xxxxxxx>
> CC: zhangjs <zachary@xxxxxxxxxxxxxxxx>
> CC: Andy Lutomirski <luto@xxxxxxxxxx>
> CC: Florian Weimer <fweimer@xxxxxxxxxx>
> CC: Lennart Poettering <mzxreary@xxxxxxxxxxx>
> CC: Nicolai Stange <nstange@xxxxxxx>
> Reviewed-by: Marcelo Henrique Cerri <marcelo.cerri@xxxxxxxxxxxxx>
> Reviewed-by: Roman Drahtmueller <draht@xxxxxxxxxxxxxx>
> Tested-by: Roman DrahtmÃller <draht@xxxxxxxxxxxxxx>
> Tested-by: Marcelo Henrique Cerri <marcelo.cerri@xxxxxxxxxxxxx>
> Tested-by: Neil Horman <nhorman@xxxxxxxxxx>
> Signed-off-by: Stephan Mueller <smueller@xxxxxxxxxx>
> ---
>  drivers/char/lrng/Kconfig      |  10 +
>  drivers/char/lrng/Makefile     |   1 +
>  drivers/char/lrng/lrng_kcapi.c | 327 +++++++++++++++++++++++++++++++++
>  3 files changed, 338 insertions(+)
>  create mode 100644 drivers/char/lrng/lrng_kcapi.c
> 
> diff --git a/drivers/char/lrng/Kconfig b/drivers/char/lrng/Kconfig
> index 15fb623d9d1f..0d070a3897dd 100644
> --- a/drivers/char/lrng/Kconfig
> +++ b/drivers/char/lrng/Kconfig
> @@ -80,6 +80,16 @@ config LRNG_DRBG
>  	  Enable the SP800-90A DRBG support for the LRNG. Once the
>  	  module is loaded, output from /dev/random, /dev/urandom,
>  	  getrandom(2), or get_random_bytes is provided by a DRBG.
> +
> +config LRNG_KCAPI
> +	tristate "Kernel Crypto API support for the LRNG"
> +	select CRYPTO_RNG

Don't select CRYPTO_RNG unless you know that CRYPTO is set/enabled.

> +	help
> +	  Enable the support for generic pseudo-random number
> +	  generators offered by the kernel crypto API with the
> +	  LRNG. Once the module is loaded, output from /dev/random,
> +	  /dev/urandom, getrandom(2), or get_random_bytes is
> +	  provided by the selected kernel crypto API RNG.
>  endif # LRNG_DRNG_SWITCH
>  
>  endif # LRNG


-- 
~Randy
Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>