Subject: Re: [PATCH 14/18] lib/mpi: export mpi_rshift
To:     Nicolai Stange <nstange@suse.de>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        "David S. Miller" <davem@davemloft.net>
Cc:     =?UTF-8?Q?Stephan_M=c3=bcller?= <smueller@chronox.de>,
        Torsten Duwe <duwe@suse.de>, Zaibo Xu <xuzaibo@huawei.com>,
        Giovanni Cabiddu <giovanni.cabiddu@intel.com>,
        David Howells <dhowells@redhat.com>,
        Jarkko Sakkinen <jarkko@kernel.org>,
        linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
        qat-linux@intel.com, keyrings@vger.kernel.org
References: <20211201004858.19831-1-nstange@suse.de>
 <20211201004858.19831-15-nstange@suse.de>
From:   Hannes Reinecke <hare@suse.de>
Message-ID: <fbd7fc63-0a56-595d-346d-ae978bebb669@suse.de>
Date:   Wed, 1 Dec 2021 08:32:14 +0100
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On 12/1/21 1:48 AM, Nicolai Stange wrote:
> A subsequent patch will make the crypto/dh's dh_is_pubkey_valid() to
> calculate a safe-prime groups Q parameter from P: Q = (P - 1) / 2. For
> implementing this, mpi_rshift() will be needed. Export it so that it's
> accessible from crypto/dh.
> 
> Signed-off-by: Nicolai Stange <nstange@suse.de>
> ---
>   lib/mpi/mpi-bit.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/lib/mpi/mpi-bit.c b/lib/mpi/mpi-bit.c
> index 142b680835df..070ba784c9f1 100644
> --- a/lib/mpi/mpi-bit.c
> +++ b/lib/mpi/mpi-bit.c
> @@ -242,6 +242,7 @@ void mpi_rshift(MPI x, MPI a, unsigned int n)
>   	}
>   	MPN_NORMALIZE(x->d, x->nlimbs);
>   }
> +EXPORT_SYMBOL_GPL(mpi_rshift);
>   
>   /****************
>    * Shift A by COUNT limbs to the left
> 
Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare@suse.de                              +49 911 74053 688
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