Re: [PATCH 0/4] Add a new backend for cryptodev

[Michael S. Tsirkin]

On Mon, Sep 19, 2022 at 11:53:16AM +0800, Lei He wrote:
> This patch adds a new backend called LKCF to cryptodev, LKCF stands
> for Linux Kernel Cryptography Framework. If a cryptographic
> accelerator that supports LKCF is installed on the the host (you can
> see which algorithms are supported in host's LKCF by executing
> 'cat /proc/crypto'), then RSA operations can be offloaded.
> More background info can refer to: https://lwn.net/Articles/895399/,
> 'keyctl[5]' in the picture.
> 
> This patch:
> 1. Modified some interfaces of cryptodev and cryptodev-backend to
> support asynchronous requests.
> 2. Extended the DER encoder in crypto, so that we can export the
> RSA private key into PKCS#8 format and upload it to host kernel.
> 3. Added a new backend for cryptodev.
> 
> I tested the backend with a QAT card, the qps of RSA-2048-decryption
> is about 25k/s, and the main-loop becomes the bottleneck. The qps
> using OpenSSL directly is about 6k/s (with 6 vCPUs). We will support 
> IO-thread for cryptodev in another series later.
> 
> Lei He (4):
>   virtio-crypto: Support asynchronous mode
>   crypto: Support DER encodings
>   crypto: Support export akcipher to pkcs8
>   cryptodev: Add a lkcf-backend for cryptodev

Seems to fail build for me - probably a conflict applying.
Coul you pls rebase and repost? Sorry about the noise.

>  backends/cryptodev-builtin.c    |  69 +++--
>  backends/cryptodev-lkcf.c       | 620 
> ++++++++++++++++++++++++++++++++++++++++
>  backends/cryptodev-vhost-user.c |  51 +++-
>  backends/cryptodev.c            |  44 +--
>  backends/meson.build            |   3 +
>  crypto/akcipher.c               |  17 ++
>  crypto/der.c                    | 307 ++++++++++++++++++--
>  crypto/der.h                    | 211 +++++++++++++-
>  crypto/rsakey.c                 |  42 +++
>  crypto/rsakey.h                 |  11 +-
>  hw/virtio/virtio-crypto.c       | 324 ++++++++++++---------
>  include/crypto/akcipher.h       |  21 ++
>  include/sysemu/cryptodev.h      |  61 ++--
>  qapi/qom.json                   |   2 +
>  tests/unit/test-crypto-der.c    | 126 ++++++--
>  15 files changed, 1649 insertions(+), 260 deletions(-)
>  create mode 100644 backends/cryptodev-lkcf.c
> 
> --
> 2.11.0