linux-kernel - Re: [PATCH v3 1/2] crypto: Implement a generic crypto statistics

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Date:   Thu, 6 Dec 2018 12:08:57 +0100
From:   LABBE Corentin <clabbe@...libre.com>
To:     Eric Biggers <ebiggers@...nel.org>
Cc:     davem@...emloft.net, herbert@...dor.apana.org.au,
        nhorman@...driver.com, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/2] crypto: Implement a generic crypto statistics

On Wed, Dec 05, 2018 at 04:04:59PM -0800, Eric Biggers wrote:
> Hi Corentin,
> 
> On Wed, Sep 19, 2018 at 10:10:54AM +0000, Corentin Labbe wrote:
> > +int crypto_dump_reportstat(struct sk_buff *skb, struct netlink_callback *cb)
> > +{
> > +	struct crypto_alg *alg;
> > +	struct crypto_dump_info info;
> > +	int err;
> > +
> > +	if (cb->args[0])
> > +		goto out;
> > +
> > +	cb->args[0] = 1;
> > +
> > +	info.in_skb = cb->skb;
> > +	info.out_skb = skb;
> > +	info.nlmsg_seq = cb->nlh->nlmsg_seq;
> > +	info.nlmsg_flags = NLM_F_MULTI;
> > +
> > +	list_for_each_entry(alg, &crypto_alg_list, cra_list) {
> > +		err = crypto_reportstat_alg(alg, &info);
> > +		if (err)
> > +			goto out_err;
> > +	}
> > +
> > +out:
> > +	return skb->len;
> > +out_err:
> > +	return err;
> > +}
> > +
> > +int crypto_dump_reportstat_done(struct netlink_callback *cb)
> > +{
> > +	return 0;
> > +}
> 
> How did you test this part?  Hint: these functions are never executed.
> 

Right, it is not used, only crypto_reportstat is used by the getstat.c example tool.
And for using it, I need to do changes in crypto_user_rcv_msg().
But I am not sure if it is interesting to do so.

So I will send a patch for removing it.

Regards