v1 --> v2:
- Fix compile errors when neither 'nettle' nor 'gcrypt' are enabled.
- Trivial changes to error codes when neither 'nettle' nor 'gcrypt' are
enabled.
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
backends/cryptodev-builtin.c | 69 +++--
backends/cryptodev-lkcf.c | 645 ++++++++++++++++++++++++++++++++++++++++
backends/cryptodev-vhost-user.c | 51 +++-
backends/cryptodev.c | 44 +--
backends/meson.build | 3 +
crypto/akcipher.c | 18 ++
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, 1675 insertions(+), 260 deletions(-)
create mode 100644 backends/cryptodev-lkcf.c
--
2.11.0