Re: dedicated list for rdma userspace programming

[Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>]

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On Mon, Apr 24, 2017 at 12:58:53PM +0300, Vasiliy Tolstov wrote:
> Hi! Does this mailing list suitable for questions about rdma userspace
> programming or i need to find another list?

This is the right list.

>
> My question is - how userspace libraries communicate with kernel
> devices which provided by kernel infiniband drivers? This is character
> devices and userspace libraries read/write to it or userspace library
> do some ioctls?

There are number of char devices exported by infiniband subsystem
(/dev/infiniband/*) and the communication is performed with read/write
interfaces to uverbs file [1].

Right now, we are in process of migration from these interfaces to ioctl
based, see Matan's latest RFC [2].

[1] https://github.com/linux-rdma/rdma-core/blob/master/Documentation/libibverbs.md
[2] http://marc.info/?l=linux-rdma&m=149261526916544&w=2

>
> Where i can find info about it?
>
> --
> Vasiliy Tolstov,
> e-mail: v.tolstov-+9FY0jupvH6HXe+LvDLADg@public.gmane.org
> --
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