Re: [RFC PATCH 1/1] RDMA/core: Fix a problem from rdma link in exclusive mode

[Leon Romanovsky <leon@kernel.org>]

On Mon, Oct 10, 2022 at 08:25:45PM -0400, Zhu Yanjun wrote:
> From: Zhu Yanjun <yanjun.zhu@linux.dev>
> 
> This is not an official commit. In rdma net namespace, the rdma device
> is separate from the net device. For example, a rdma device A is in net
> namespace A1 while the related net device B is in net namespace B1.
> 
> I am curious how to make perftest and rping tests on the above
> scenario. The ip address of net device B is in net namespace B1
> while the rdma device is in net namespace A1.

Use "exclusive" mode, "shared" is legacy interface for backward
compatibility.

> 
> From my perspective, the rdma device and related net device should
> be in the same net namespace. When a net device is moved from one net
> namespace to another net namespace, the rdma device should be in the
> same net namespace with the net device.
> 
> In this commit, when all the ib devices are parsed in exclusive mode,
> if the ib devices and related net devices are not in the same net
> namespace, the link information will not be reported to user space.
> 
> This commit is a RFC.

Please don't send patches as reply-to.

Thanks