Wed, Jul 22, 2026 at 01:53:23PM +0200, [email protected] wrote: >On Wed, Jul 22, 2026 at 01:19:00PM +0200, Jiri Pirko wrote: >> Thu, Jul 16, 2026 at 03:23:01PM +0200, [email protected] wrote: >> >From: Jiri Pirko <[email protected]> >> > >> >RDMA device names are unique system-wide today: >> >__ib_device_get_by_name() checks a requested name against every >> >registered device regardless of the network namespace it lives in. >> >A device in one network namespace therefore cannot use a name already >> >taken in another, even in exclusive netns mode (netns_mode=0) where >> >the two are otherwise isolated. Net devices have no such restriction - >> >their names only need to be unique within a network namespace. >> > >> >This series makes RDMA device names unique per network namespace, >> >matching net device semantics, and adapts the users that assumed >> >system-wide unique names. >> > >> >Scoping reuses the existing rdma_dev_access_netns() predicate, so >> >behavior only changes in exclusive mode: >> > - shared mode (default): names stay unique system-wide, no change; >> > - exclusive mode: names only need to be unique within a namespace; >> > - CONFIG_NET_NS=n: everything is init_net, names stay system-wide >> > unique. >> > >> >There are two users that cannot be made per-namespace and are >> >documented as known limitations instead of changed: >> > - the rdma_cm configfs tree: configfs has no network namespace >> > support, so it cannot represent two same-named devices; >> > - SELinux ibendport labelling: endports are labelled by (device >> > name, port) from a global policy; distinguishing same-named >> > devices would need net namespace support in the SELinux policy >> > language and tooling. >> > >> >Tested with the new rxe_netns_names kselftest added in the last patch. >> >> This looks like good to go. All Sashiko findings are false positive or >> unrelated. Care to merge? Thanks! > >We usually take extra time before merging complex changes touching >core or UAPI code.
Sure, I just wanted to let you know the ball is on your side. Take your time of course :) Thanks!
