Re: [PATCH for-next v2 3/4] RDMA/nldev: ib_pd can be pointed by multiple ib_ucontext

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On Mon, May 20, 2019 at 02:50:10PM +0300, Shamir Rabinovitch wrote:
> On Mon, May 20, 2019 at 12:18:40PM +0300, Leon Romanovsky wrote:
> > On Mon, May 20, 2019 at 10:53:20AM +0300, Shamir Rabinovitch wrote:
> > > In shared object model ib_pd can belong to 1 or more ib_ucontext.
> > > Fix the nldev code so it could report multiple context ids.
> > >
> > > Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@xxxxxxxxxx>
> > > ---
> > >  drivers/infiniband/core/nldev.c | 93 +++++++++++++++++++++++++++++++--
> > >  1 file changed, 88 insertions(+), 5 deletions(-)
> > >
> > > diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
> > > index cbd712f5f8b2..f4cc92b897ff 100644
> > > --- a/drivers/infiniband/core/nldev.c
> > > +++ b/drivers/infiniband/core/nldev.c
> > > @@ -41,6 +41,9 @@
> > >  #include "core_priv.h"
> > >  #include "cma_priv.h"
> > >  #include "restrack.h"
> > > +#include "uverbs.h"
> > > +
> > > +static bool is_visible_in_pid_ns(struct rdma_restrack_entry *res);
> >
> > Mark needed it too.
> > https://patchwork.kernel.org/patch/10921419/
> >
>
> I see. So follow Mark patch the above hunk is not needed.
> Should I apply Mark patch before this series?

No, you should continue with your series, just be aware that once Mark's
patches will be merged your series will need some small update.

>
> > > +	if (!rdma_is_kernel_res(res)) {
> > > +		pd_context(pd, &pd_context_ids);
> > > +		list_for_each_entry(ctx_id, &pd_context_ids, list) {
> > > +			if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN,
> > > +				ctx_id->id))
> >
> > Did it work? You are overwriting RDMA_NLDEV_ATTR_RES_CTXN entry in the
> > loop. You need to add RDMA_NLDEV_ATTR_RES_CTX and
> > RDMA_NLDEV_ATTR_RES_CTX_ENTRY to include/uapi/rdma_netlink.h and
> > open nested table here (inside of PD) with list of contexts.
>
> I tested with only 1 context per pd (what we have today). Thanks for
> comment. I'll try to follow what you wrote here.
>



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