On Thu, Aug 22, 2019 at 07:05:12PM +0200, Marcin Mielniczuk wrote: > Thanks a lot, this did the trick. I think this is worth documenting > somewhere that this step is needed. > I'll make a PR, would README.md in the rdma-core repo be a good place? I'm not so sure, but it is better to have in some place instead of not having at all. > > Does <NAME> have any significance? I did: > > sudo rdma link add siw0 type siw netdev enpXsYYfZ > > but the resulting device is called iwpXsYYfZ. I couldn't find a trace of > `siw0` anywhere. I would say that it is a bug in kernel part of SIW, because kernel rename (the thing which change your siw0 to be iw* name) is looking for absence of mentioning PCI inside of /sys/class/infiniband/siw0/* https://github.com/linux-rdma/rdma-core/blob/master/kernel-boot/rdma_rename.c#L378 That rdma-core line works for RXE and SIW should be similar. Thanks > > On 22.08.2019 17:52, Leon Romanovsky wrote: > > 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 > >>> > >> > >
