Re: [PATCH for-next] RDMA/providers: Simplify ib_modify_port for RoCE providers

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On Thu, May 16, 2019 at 12:19:44PM -0300, Jason Gunthorpe wrote:
> On Thu, May 16, 2019 at 02:52:48PM +0300, Kamal Heib wrote:
> > On Thu, 2019-05-16 at 08:37 -0300, Jason Gunthorpe wrote:
> > > On Thu, May 16, 2019 at 02:28:40PM +0300, Kamal Heib wrote:
> > > > On Thu, 2019-05-16 at 08:16 -0300, Jason Gunthorpe wrote:
> > > > > On Thu, May 16, 2019 at 01:53:08PM +0300, Kamal Heib wrote:
> > > > > > For RoCE ports the call for ib_modify_port is not meaningful,
> > > > > > so
> > > > > > simplify the providers of RoCE by return OK in ib_core.
> > > > > > 
> > > > > > Signed-off-by: Kamal Heib <kamalheib1@xxxxxxxxx>
> > > > > >  drivers/infiniband/core/device.c              | 23 ++++++-----
> > > > > >  drivers/infiniband/hw/hns/hns_roce_main.c     |  7 ----
> > > > > >  drivers/infiniband/hw/mlx4/main.c             |  8 ----
> > > > > >  drivers/infiniband/hw/mlx5/main.c             |  6 ---
> > > > > >  drivers/infiniband/hw/ocrdma/ocrdma_main.c    |  1 -
> > > > > >  drivers/infiniband/hw/ocrdma/ocrdma_verbs.c   |  6 ---
> > > > > >  drivers/infiniband/hw/ocrdma/ocrdma_verbs.h   |  2 -
> > > > > >  drivers/infiniband/hw/qedr/main.c             |  1 -
> > > > > >  drivers/infiniband/hw/qedr/verbs.c            |  6 ---
> > > > > >  drivers/infiniband/hw/qedr/verbs.h            |  2 -
> > > > > >  .../infiniband/hw/vmw_pvrdma/pvrdma_main.c    |  1 -
> > > > > >  .../infiniband/hw/vmw_pvrdma/pvrdma_verbs.c   | 38 ---------
> > > > > >  .../infiniband/hw/vmw_pvrdma/pvrdma_verbs.h   |  2 -
> > > > > >  drivers/infiniband/sw/rxe/rxe_verbs.c         | 18 ---------
> > > > > >  14 files changed, 14 insertions(+), 107 deletions(-)
> > > > > 
> > > > > We have more roce only drivers than this, why isn't everything
> > > > > changed?
> > > > > 
> > > > > Jason
> > > > 
> > > > Not all of them implements modify_port().
> > > 
> > > Then why didn't we just delete modify port from the other drivers?
> > > 
> > > Jason
> > 
> > This patch is doing that for all roce drivers that implement modify
> > port, unless you mean none-roce drivers?
> 
> I mean just delete it without any change to the core code.. Here we
> are now changing some roce drivers to have a working modify_port
> 
> It is confusing what the intention is

I see what Jason is saying here.  If ib_modify_port() is meaningless then lets
remove the call and let it return -EOPNOTSUPP.

Returning "ok" implies that something worked.  I guess that is what happens
now...

Also FWIW you are changing the return from ENOSYS to EOPNOTSUPP.  Did you mean
to do that?

Ira

> 
> Jason



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