From: Felipe Balbi <balbi@ti.com>
Subject: Re: [PATCH 03/10] crypto: aead: Add aead_request_cast() api
Date: Thu, 2 Jul 2015 02:58:07 -0500
Message-ID: <20150702075807.GC4033@saruman.tx.rr.com>
References: <1435814320-30347-1-git-send-email-lokeshvutla@ti.com>
 <1435814320-30347-4-git-send-email-lokeshvutla@ti.com>
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Cc: <herbert@gondor.apana.org.au>, <linux-crypto@vger.kernel.org>,
	<davem@davemloft.net>, <linux-omap@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <t-kristo@ti.com>, <nsekhar@ti.com>
To: Lokesh Vutla <lokeshvutla@ti.com>
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On Thu, Jul 02, 2015 at 10:48:33AM +0530, Lokesh Vutla wrote:
> Add aead_request_cast() api to get pointer to aead_request
> from cryto_async_request.
>=20
> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
> ---
>  include/linux/crypto.h |    6 ++++++
>  1 file changed, 6 insertions(+)
>=20
> diff --git a/include/linux/crypto.h b/include/linux/crypto.h
> index 10df5d2..20fac3d 100644
> --- a/include/linux/crypto.h
> +++ b/include/linux/crypto.h
> @@ -1460,6 +1460,12 @@ static inline void aead_request_set_tfm(struct aea=
d_request *req,
>  	req->base.tfm =3D crypto_aead_tfm(crypto_aead_crt(tfm)->base);
>  }
> =20
> +static inline struct aead_request *aead_request_cast(
> +					struct crypto_async_request *req)
> +{
> +	return container_of(req, struct aead_request, base);

container_of() ensures type safety, this can be a macro just fine.

--=20
balbi

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