linux-kernel - Re: [PATCH 03/10] crypto: aead: Add aead_request

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Message-ID: <20150702075807.GC4033@saruman.tx.rr.com>
Date:	Thu, 2 Jul 2015 02:58:07 -0500
From:	Felipe Balbi <balbi@...com>
To:	Lokesh Vutla <lokeshvutla@...com>
CC:	<herbert@...dor.apana.org.au>, <linux-crypto@...r.kernel.org>,
	<davem@...emloft.net>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <t-kristo@...com>, <nsekhar@...com>
Subject: Re: [PATCH 03/10] crypto: aead: Add aead_request_cast() api

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.
> 
> Signed-off-by: Lokesh Vutla <lokeshvutla@...com>
> ---
>  include/linux/crypto.h |    6 ++++++
>  1 file changed, 6 insertions(+)
> 
> 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 aead_request *req,
>  	req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base);
>  }
>  
> +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.

-- 
balbi

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