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Date:   Thu, 22 Aug 2019 21:13:25 +0530
From:   Krishnamraju Eraparaju <krishna2@chelsio.com>
To:     Marcin Mielniczuk <marcin@golem.network>
Cc:     linux-rdma@vger.kernel.org
Subject: Re: Setting up siw devices
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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


> 
> 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
>