Re: [Qemu-devel] [PATCH 0/6] Start a contrib/libvhost-user

[Marc-André Lureau]

ping

On Sat, Jun 4, 2016 at 11:05 PM,  <address@hidden> wrote:
> From: Marc-André Lureau <address@hidden>
>
> Hi
>
> vhost-user & virtio are not so simple and evolve regularly. There
> isn't a reference code that would help you get started either. And
> the backends duplicate most of the effort.
>
> Furthermore, due to usage of ancillary data, shared memory, eventfd,
> atomics, it is not so simple to implement in other languages than C
> either (even rust still lacks socket ancillary data support). Having a
> library doing the low-level parts could eventually help to reach other
> languages (this guided some decisions, such as being able to override
> message handling)
>
> I found it would help me to experiment with new usages of
> libvhost-user (with other devices than network for example) if qemu
> would provide such "reference" library. vhost-user-bridge was the most
> complete attempt in qemu, but it lacked some abstraction and efficient
> handling of the virt queues.
>
> I propose to provide such library based on virtio.c implementation and
> vhost-user-bridge socket handling. My hope is that at some point the
> library would be complete and stable enough that it could become a
> standalone project, but for now it makes more sense to propose it in
> qemu/contrib.
>
> Comments welcome!
>
> rfc->v1:
> - add vu_gpa_to_va()
> - fix indirect descriptors handling
> - fix notification
> - more error handling
> - disable debugging
>
> Marc-André Lureau (6):
>   vubr: remove false comment
>   vubr: remove unnecessary dispatcher_remove
>   vubr: indicate peer disconnected
>   vubr: do not accept more than one connection
>   contrib: add libvhost-user
>   test/vubr: use contrib/libvhost-user
>
>  Makefile                              |    1 +
>  Makefile.objs                         |    1 +
>  contrib/libvhost-user/Makefile.objs   |    1 +
>  contrib/libvhost-user/libvhost-user.c | 1429 
> +++++++++++++++++++++++++++++++++
>  contrib/libvhost-user/libvhost-user.h |  270 +++++++
>  tests/Makefile                        |    2 +-
>  tests/vhost-user-bridge.c             | 1173 +++++----------------------
>  7 files changed, 1926 insertions(+), 951 deletions(-)
>  create mode 100644 contrib/libvhost-user/Makefile.objs
>  create mode 100644 contrib/libvhost-user/libvhost-user.c
>  create mode 100644 contrib/libvhost-user/libvhost-user.h
>
> --
> 2.7.4
>



-- 
Marc-André Lureau