linux-kernel - Re: [RFC PATCH 2/2] Removes the x86 dependency on the QAT drivers

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Message-ID: <8f6d8d1f-2872-15b9-d38b-1e8eb26f781b@foss.arm.com>
Date:   Wed, 18 May 2022 14:00:40 +0100
From:   Yoan Picchi <yoan.picchi@...s.arm.com>
To:     ardb@...nel.org
Cc:     davem@...emloft.net, giovanni.cabiddu@...el.com,
        herbert@...dor.apana.org.au, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org, qat-linux@...el.com,
        yoan.picchi@....com, andre.przywara@....com
Subject: Re: [RFC PATCH 2/2] Removes the x86 dependency on the QAT drivers

 >> From: Yoan Picchi <yoan.picchi@....com>
 >>
 >> The QAT acceleration card can be very helpfull for some tasks like
 >> dealing with IPSEC but it is currently restricted to be used only on 
x86 machine.
 >> Looking at the code we didn't see any reasons why those drivers might
 >> not work on other architectures. We've successfully built all of them
 >> on x86, arm64, arm32, mips64, powerpc64, riscv64 and sparc64.
 >>
 >> We also have tested the driver with an Intel Corporation C62x Chipset
 >> QuickAssist Technology (rev 04) PCIe card on an arm64 server. After
 >> the numa patch, it works with the AF_ALG crypto userland interface,
 >> allowing us to encrypt some data with cbc for instance. We've also
 >> successfully created some VF, bound them to DPDK, and used the card
 >> this way, thus showing some real life usecases of x86 do work on 
arm64 too.
 >>
 >> Please let us know if we missed something that would warrants some
 >> further testing.
 >Thanks Yoan.
 >
 >Can you please confirm that you tested the driver on the platform you 
reported using a kernel with CONFIG_CRYPTO_MANAGER_DISABLE_TESTS not set 
and CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y and the self test >is passing?
 >You can check it by running
 >    $ cat /proc/crypto | grep -B 4 passed | grep -e "qat_\|qat-" | 
sort This should report:
 >    driver       : qat_aes_cbc
 >    driver       : qat_aes_cbc_hmac_sha1
 >    driver       : qat_aes_cbc_hmac_sha256
 >    driver       : qat_aes_cbc_hmac_sha512
 >    driver       : qat_aes_ctr
 >    driver       : qat_aes_xts
 >    driver       : qat-dh
 >    driver       : qat-rsa
 >
 >Note that if you are using the HEAD of cryptodev-2.6 you will have to 
either revert 8893d27ffcaf6ec6267038a177cb87bcde4dd3de or apply
 >https://patchwork.kernel.org/project/linux-crypto/list/?series=639755 
as the algorithms have been temporarily disabled.
 >
 >Regards,
 >
 >--
 >Giovanni

Hi Giovanni.

Thanks for the instructions, I did not know of this test.
I rebuilt my kernel on arm64 with those parameter and I confirm I get 
the same output with
$ cat /proc/crypto | grep -B 4 passed | grep -e "qat_\|qat-" | sort

Kindly,
Yoan