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Date:   Wed, 12 Dec 2018 20:25:08 +0200
From:   Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To:     Roberto Sassu <roberto.sassu@huawei.com>
Cc:     zohar@linux.ibm.com, david.safford@ge.com, monty.wiseman@ge.com,
        linux-integrity@vger.kernel.org,
        linux-security-module@vger.kernel.org,
        linux-kernel@vger.kernel.org, silviu.vlasceanu@huawei.com
Subject: Re: [PATCH v6 7/7] tpm: pass an array of tpm_bank_list structures to
 tpm_pcr_extend()
Message-ID: <20181212182508.GG6333@linux.intel.com>
References: <20181204082138.24600-1-roberto.sassu@huawei.com>
 <20181204082138.24600-8-roberto.sassu@huawei.com>
 <20181205001417.GF1233@linux.intel.com>
 <63ac9e36-34ac-6a1d-553d-dac5cab98d43@huawei.com>
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On Thu, Dec 06, 2018 at 07:09:48PM +0100, Roberto Sassu wrote:
> 
> 
> On 12/5/2018 1:14 AM, Jarkko Sakkinen wrote:
> > On Tue, Dec 04, 2018 at 09:21:38AM +0100, Roberto Sassu wrote:
> > > The new tpm_bank_list structure has been preferred to the tpm_digest
> > > structure, to let the caller specify the size of the digest (which may be
> > > unknown to the TPM driver).
> > 
> > Why is that? Didn't previous commit query these?
> > 
> > > +struct tpm_bank_list {
> > > +	u16 alg_id;
> > > +	u16 extend_size;
> > > +	const u8 *extend_array;
> > > +};
> > 
> > Naming is not good here. If this only for extending shouldn't that
> > be in the structs name?
> 
> tpm_extend_input?

I think something like this would be appropriate:

struct tpm_extend_digest {
	u16 alg_id;
	u16 size;
	u8 *data;
};

/Jarkko