linux-kernel - Re: [PATCH 2/5] crypto: hisilicon/sec - add ahash alg features for Kunpeng920

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Message-ID: <20210821072557.GA31491@gondor.apana.org.au>
Date:   Sat, 21 Aug 2021 15:25:57 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Kai Ye <yekai13@...wei.com>
Cc:     linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        wangzhou1@...ilicon.com
Subject: Re: [PATCH 2/5] crypto: hisilicon/sec - add ahash alg features for
 Kunpeng920

On Fri, Aug 13, 2021 at 05:40:23PM +0800, Kai Ye wrote:
>
> +static int sec_ahash_import(struct ahash_request *req, const void *in)
> +{
> +	/*
> +	 * Import partial state of the transformation. This function loads the
> +	 * entire state of the ongoing transformation from a provided block of
> +	 * data so the transformation can continue from this point onward.
> +	 */
> +	struct sec_req *sreq = ahash_request_ctx(req);
> +
> +	memcpy(sreq, in, sizeof(struct sec_req));
> +	return 0;
> +}

Please explain how this works given that you've got pointers in
struct sec_req?

Thanks,
-- 
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