From: Amir Mizinski <amirmizi6@gmail.com>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: Eyal.Cohen@nuvoton.com, oshrialkoby85@gmail.com,
alexander.steffen@infineon.com, robh+dt@kernel.org,
mark.rutland@arm.com, peterhuewe@gmx.de, jgg@ziepe.ca,
arnd@arndb.de, gregkh@linuxfoundation.org, benoit.houyere@st.com,
eajames@linux.ibm.com, joel@jms.id.au,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-integrity@vger.kernel.org, oshri.alkoby@nuvoton.com,
tmaimon77@gmail.com, gcwilson@us.ibm.com, kgoldman@us.ibm.com,
Dan.Morav@nuvoton.com, oren.tanami@nuvoton.com,
shmulik.hager@nuvoton.com, amir.mizinski@nuvoton.com,
Christophe Ricard <christophe-h.ricard@st.com>
Subject: Re: [PATCH v7 2/7] tpm: tpm_tis: Add verify_data_integrity handle toy tpm_tis_phy_ops
Date: Thu, 30 Apr 2020 10:19:09 +0000 [thread overview]
Message-ID: <d0eec29a-20f5-1187-f0c3-c564879d7878@gmail.com> (raw)
In-Reply-To: <20200429053456.GE8452@linux.intel.com>
On 2020-04-29 05:34, Jarkko Sakkinen wrote:
> On Mon, Apr 27, 2020 at 03:49:26PM +0300, amirmizi6@gmail.com wrote:
>> + bool (*verify_data_integrity)(struct tpm_tis_data *data, const u8 *buf,
>> + size_t len);
>
> Why can't the i2c driver verify this in the end of read_bytes()?
>
The TPM calculates the checksum of the entire command data at the end
of command transmission or the checksum of the entire response data at the
end of response transmission.
read_bytes is not necessarily called at the end of response transmission. Same for write_bytes.
> /Jarkko
next prev parent reply other threads:[~2020-04-30 10:19 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-27 12:49 [PATCH v7 0/7] Add tpm i2c ptp driver amirmizi6
2020-04-27 12:49 ` [PATCH v7 1/7] tpm: tpm_tis: Make implementation of read16, read32 and write32 optional amirmizi6
2020-04-27 12:49 ` [PATCH v7 2/7] tpm: tpm_tis: Add verify_data_integrity handle toy tpm_tis_phy_ops amirmizi6
2020-04-29 5:34 ` Jarkko Sakkinen
2020-04-30 10:19 ` Amir Mizinski [this message]
2020-04-27 12:49 ` [PATCH v7 3/7] tpm: tpm_tis: Rewrite "tpm_tis_req_canceled()" amirmizi6
2020-04-29 5:37 ` Jarkko Sakkinen
2020-04-30 10:29 ` Amir Mizinski
2020-04-27 12:49 ` [PATCH v7 4/7] tpm: tpm_tis: Fix expected bit handling and send all bytes in one shot without last byte in exception amirmizi6
2020-04-27 12:49 ` [PATCH v7 5/7] tpm: Handle an exception for TPM Firmware Update mode amirmizi6
2020-04-27 12:49 ` [PATCH v7 6/7] tpm: Add YAML schema for TPM TIS I2C options amirmizi6
2020-05-05 16:12 ` Rob Herring
2020-05-06 15:20 ` Amir Mizinski
2020-05-06 19:02 ` Rob Herring
2020-04-27 12:49 ` [PATCH v7 7/7] tpm: tpm_tis: add tpm_tis_i2c driver amirmizi6
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