linux-kernel - Re: [PATCH 1/3 v6] crypto: introduce the flag CRYPTO_ALG_ALLOCATES

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Message-ID: <20200701014934.GA6710@gondor.apana.org.au>
Date:   Wed, 1 Jul 2020 11:49:34 +1000
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Mikulas Patocka <mpatocka@...hat.com>
Cc:     Eric Biggers <ebiggers@...nel.org>,
        Mike Snitzer <msnitzer@...hat.com>,
        Zaibo Xu <xuzaibo@...wei.com>, linux-kernel@...r.kernel.org,
        Wei Xu <xuwei5@...ilicon.com>, dm-devel@...hat.com,
        George Cherian <gcherian@...vell.com>,
        linux-crypto@...r.kernel.org,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        "David S. Miller" <davem@...emloft.net>,
        Milan Broz <mbroz@...hat.com>
Subject: Re: [PATCH 1/3 v6] crypto: introduce the flag
 CRYPTO_ALG_ALLOCATES_MEMORY

On Tue, Jun 30, 2020 at 02:15:55PM -0400, Mikulas Patocka wrote:
>
> Index: linux-2.6/crypto/pcrypt.c
> ===================================================================
> --- linux-2.6.orig/crypto/pcrypt.c	2020-06-29 16:03:07.346417000 +0200
> +++ linux-2.6/crypto/pcrypt.c	2020-06-30 20:11:56.636417000 +0200
> @@ -225,19 +225,21 @@ static int pcrypt_init_instance(struct c
>  	return 0;
>  }
>  
> -static int pcrypt_create_aead(struct crypto_template *tmpl, struct rtattr **tb,
> -			      u32 type, u32 mask)
> +static int pcrypt_create_aead(struct crypto_template *tmpl, struct rtattr **tb)
>  {

Rather than removing these two arguments, I think you should pass
along algt instead.

>  	struct pcrypt_instance_ctx *ctx;
>  	struct crypto_attr_type *algt;
>  	struct aead_instance *inst;
>  	struct aead_alg *alg;
> +	u32 mask;
>  	int err;
>  
>  	algt = crypto_get_attr_type(tb);
>  	if (IS_ERR(algt))
>  		return PTR_ERR(algt);

Then we could remove this bit.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt