[dpdk-dev] [PATCH v3 0/2] vhost: Support external backend only vhost-user requests

[Maxime Coquelin <maxime.coquelin@redhat.com>]

The goals of this series is to provide more flexibility to external
backends to implement their specific vhost-user request handling
without having to patch vhost-user library.

First patch implements a new API for external backend to advertize
its specific protocol features to vhost-user master.

Second patch ensures a request not handled by the vhost-user library
but by the external backend only will not be treated as an error or
make the vhost lib to crash.

Changes in v3:
==============
 - Fix and improve comments (Ilya)

Changes in v2:
==============
 - Remove 'skip_master' param from documentation (Ilya)
 - Merge pre and post callback in a single one (Ilya)

Changes in v1:
==============
 - Convert vhost-crypto to the API change (Ilya)
 - Fix build with recent GCC (fall-through)
 - Check request > VHOST_USER_NONE (Ilya)
 - Remove 'Requested invalid message type' check (Ilya)

Changes in RFC v2:
==================
 - Fix build & git message
 - Add new enum for not handled messages & remove skip_master (Ilya)

Maxime Coquelin (2):
  vhost: add API to set protocol features flags
  vhost: support requests only handled by external backend

 lib/librte_vhost/rte_vhost.h           | 53 +++++++++--------
 lib/librte_vhost/rte_vhost_version.map |  1 +
 lib/librte_vhost/socket.c              | 14 +++++
 lib/librte_vhost/vhost_crypto.c        | 10 +++-
 lib/librte_vhost/vhost_user.c          | 82 ++++++++++++++++----------
 5 files changed, 102 insertions(+), 58 deletions(-)

-- 
2.20.1