On Wed, May 16, 2018 at 03:23:35PM -0400, Hal Rosenstock wrote: > On 5/16/2018 3:11 PM, Jason Gunthorpe wrote: > > On Wed, May 16, 2018 at 02:40:58PM -0400, Hal Rosenstock wrote: > >> > >> If ibstat is run with ibsim, it no longer detects the local ports > >> with the latest libibumad from rdma-core with the following patch: > >> > >> commit abf72057c27750275d0668375d30c4971911d041 > >> Author: Jason Gunthorpe <jgg@xxxxxxxxxxxx> > >> Date: Thu Apr 5 11:04:14 2018 -0600 > >> > >> Now that we don't load the umad module if the HW doesn't use it (eg > >> for roce only hardware) umad_init is failing to read the ABI version > >> from the kernel. > >> > >> Applications still want to use some libibumad services that are not > >> related to the char device, so move the version check to umad_open_port > >> instead. > >> > >> Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx> > >> > >> umad_get_cas_names no longer finds any IB devices/ports > >> when running with ibsim as sysfs is no longer initialized with > >> the latest libibumad where this is not done as part of umad_init > >> but moved to umad_open_port. > > > > Why is this not getting fixed in ibsim? > > Unlike real hardware where sysfs is always /sys/class/..., with ibsim > moves that down a level with ./sys-nnnn/sys/class where the nnnn is per > client. It was the original umad_init in the client application and not > in libumad2sim that made this happen. Maybe I'm missing something but I > don't see way to move this into ibsim itself. Have scandir() in umad2sim.c also call umad2sim_init() ? Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
