Re: [PATCH rdma-next v9] RDMA: Change capability fields in ib_device_attr from int to u32

[Leon Romanovsky <leon@kernel.org>]

On Tue, Jul 07, 2026 at 03:20:36AM -0700, Erni Sri Satya Vennela wrote:
> On Mon, Jul 06, 2026 at 11:49:50AM +0300, Leon Romanovsky wrote:
> > > ---
> > >  drivers/infiniband/core/cq.c               |  3 +-
> > >  drivers/infiniband/hw/qedr/verbs.c         |  2 +-
> > >  drivers/infiniband/sw/rxe/rxe_qp.c         | 22 +++++-----
> > >  drivers/infiniband/sw/rxe/rxe_srq.c        | 16 +++----
> > >  drivers/infiniband/ulp/ipoib/ipoib_cm.c    | 10 ++---
> > >  drivers/infiniband/ulp/ipoib/ipoib_verbs.c |  3 +-
> > >  drivers/infiniband/ulp/iser/iser_verbs.c   |  5 +--
> > >  drivers/infiniband/ulp/isert/ib_isert.c    |  7 ++-
> > >  drivers/infiniband/ulp/rtrs/rtrs-clt.c     | 11 ++---
> > >  drivers/infiniband/ulp/rtrs/rtrs-srv.c     | 11 ++---
> > >  drivers/infiniband/ulp/srp/ib_srp.c        |  2 +-
> > >  drivers/infiniband/ulp/srpt/ib_srpt.c      | 21 +++++----
> > >  drivers/nvme/host/rdma.c                   |  8 ++--
> > >  drivers/nvme/target/rdma.c                 | 22 ++++++----
> > >  fs/smb/smbdirect/accept.c                  |  5 ++-
> > >  fs/smb/smbdirect/connect.c                 |  5 ++-
> > >  fs/smb/smbdirect/connection.c              |  8 ++--
> > >  include/linux/sunrpc/svc_rdma.h            |  4 +-
> > >  include/rdma/ib_verbs.h                    | 50 +++++++++++-----------
> > >  net/rds/ib.c                               | 10 ++---
> > >  net/rds/ib_cm.c                            | 10 ++---
> > >  net/sunrpc/xprtrdma/frwr_ops.c             |  7 +--
> > >  net/sunrpc/xprtrdma/svc_rdma_transport.c   |  5 +--
> > >  net/sunrpc/xprtrdma/verbs.c                |  2 +-
> > >  24 files changed, 122 insertions(+), 127 deletions(-)
> > 
> > The following code is still missing. 
> 
> I'll make this change in the next version.
> 
> >Also, what about mxa_srq?
> > Why wasn't it converted as well?
> 
> I originally left max_srq as int because its only consumer pairs it with
> num_comp_vectors (a signed int) in nvmet_rdma, so keeping it int let
> that site stay a plain min() instead of a min_t().
> 
> num_comp_vectors is the completion-vector count, legitimately int and
> never anywhere near INT_MAX, so I'd prefer to leave it signed rather
> than convert it everywhere. Does that work for you, or would you rather
> num_comp_vectors be converted too?

In this patch no, but it is worth to write this in commit message.

Thanks

> 
> If it needs converting, I'll do it as a separate patch, since it lives
> in a different struct (ib_device) and touches many call sites.
> Otherwise, using min_t() for just this one call is fine too.
> 
> Thanks,
> Vennela
> 
> > 
> > diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
> > index f599c24b34e8..aae4f3f6bcba 100644
> > --- a/drivers/infiniband/core/nldev.c
> > +++ b/drivers/infiniband/core/nldev.c
> > @@ -454,7 +454,8 @@ static int fill_res_info(struct sk_buff *msg, struct ib_device *device,
> >         };
> > 
> >         struct nlattr *table_attr;
> > -       int ret, i, curr, max;
> > +       u64 curr, max;
> > +       int ret, i;
> > 
> >         if (fill_nldev_handle(msg, device))
> >                 return -EMSGSIZE;
> > diff --git a/drivers/infiniband/core/restrack.c b/drivers/infiniband/core/restrack.c
> > index cfee2071586c..1b2f9df49e28 100644
> > --- a/drivers/infiniband/core/restrack.c
> > +++ b/drivers/infiniband/core/restrack.c
> > @@ -61,7 +61,7 @@ void rdma_restrack_clean(struct ib_device *dev)
> >   * @type: actual type of object to operate
> >   * @show_details: count driver specific objects
> >   */
> > -int rdma_restrack_count(struct ib_device *dev, enum rdma_restrack_type type,
> > +u32 rdma_restrack_count(struct ib_device *dev, enum rdma_restrack_type type,
> >                         bool show_details)
> >  {
> >         struct rdma_restrack_root *rt = &dev->res[type];
> > diff --git a/include/rdma/restrack.h b/include/rdma/restrack.h
> > index 451f99e3717d..c081384740ce 100644
> > --- a/include/rdma/restrack.h
> > +++ b/include/rdma/restrack.h
> > @@ -123,7 +123,7 @@ struct rdma_restrack_entry {
> >         u32 id;
> >  };
> > 
> > -int rdma_restrack_count(struct ib_device *dev, enum rdma_restrack_type type,
> > +u32 rdma_restrack_count(struct ib_device *dev, enum rdma_restrack_type type,
> >                         bool show_details);
> >  /**
> >   * rdma_is_kernel_res() - check the owner of resource