[Qemu-devel] [RFC 0/8] virtio-crypto: add multiplexing mode support

["Longpeng(Mike)" <longpeng2@huawei.com>]

*NOTE*
The code realization is based on the latest virtio crypto spec:
 [PATCH v19 0/2] virtio-crypto: virtio crypto device specification
   https://lists.nongnu.org/archive/html/qemu-devel/2017-08/msg05217.html

In session mode, the process of create/close a session
makes we have a least one full round-trip cost from guest to host to guest
to be able to send any data for symmetric algorithms. It gets ourself into
synchronization troubles in some scenarios like a web server handling lots
of small requests whose algorithms and keys are different.

We can support one-blob request (no sessions) as well for symmetric
algorithms, including HASH, MAC services. The benefit is obvious for
HASH service because it's usually a one-blob operation.

Gonglei (3):
  virtio-crypto: add stateless crypto request handler
  cryptodev: extract one util function
  virtio-crypto: add host feature bits support

Longpeng(Mike) (5):
  virtio-crypto: add new definations for multiplexing mode
  virtio-crypto: add session creation logic for mux mode
  virtio-crypto: add dataq operation logic for mux mode
  cryptodev: add stateless mode cipher support
  cryptodev-builtin: add stateless cipher support

 backends/cryptodev-builtin.c                   | 189 ++++++++---
 backends/cryptodev.c                           |  21 ++
 hw/virtio/virtio-crypto.c                      | 433 +++++++++++++++++++++++--
 include/hw/virtio/virtio-crypto.h              |   2 +
 include/standard-headers/linux/virtio_crypto.h | 182 ++++++++++-
 include/sysemu/cryptodev.h                     |  21 ++
 6 files changed, 774 insertions(+), 74 deletions(-)

-- 
1.8.3.1