Re: Setting up siw devices

[Leon Romanovsky <leon@kernel.org>]

On Thu, Aug 22, 2019 at 09:13:25PM +0530, Krishnamraju Eraparaju wrote:
> On Thursday, August 08/22/19, 2019 at 17:08:49 +0200, Marcin Mielniczuk wrote:
> > Hi,
> >
> > I'm trying to test the recently merged siw module.
> > I'm running kernel 5.3-rc5 (taken from the Ubuntu mainline-kernel
> > repository [1]) on Ubuntu 18.04 (bionic).
> > I also manually installed rdma-core 25.0 from tarball, using the
> > included Debian packaging. I installed all the packages but ibacm.
> >
> > After booting the new kernel I manually loaded the kernel module by
> >
> >      modprobe siw
> >      modprobe rdma_ucm
> >
> > Then ibv_devinfo shows: "No IB devices found".
> > dmesg only shows:
> >      [   29.856751] SoftiWARP attached
> >
> > According to this tutorial, [2] it should be enough to just load the siw
> > module. (unlike RXE, where one needs to use rxe_cfg to set up the
> > interface)
> > Is this a bug in siw or just a configuration issue on my side?
>
> Have you done "rdma link"?
>
> rdma link add <NAME> type siw netdev <NETDEV>
>
> http://man7.org/linux/man-pages/man8/rdma-link.8.html

BTW, the same goes for RXE and rxe_cfg is discouraged.

Thanks

>
> >
> > Thanks,
> > Marcin
> >
> > [1] https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.3-rc5/
> > [2] https://budevg.github.io/posts/tutorials/2017/04/29/rdma-101-1.html
> >
>
>
>