Re: [PATCH rdma-next v1 07/13] IB/ocrdma: Removed GID add/del null routines

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On Fri, Mar 23, 2018 at 03:31:45AM +0000, Parav Pandit wrote:
> Hi Jason,
> 
> > From: Leon Romanovsky [mailto:leon@xxxxxxxxxx]
> > Sent: Tuesday, March 13, 2018 9:06 AM
> > To: Doug Ledford <dledford@xxxxxxxxxx>; Jason Gunthorpe
> > <jgg@xxxxxxxxxxxx>
> > Cc: Leon Romanovsky <leonro@xxxxxxxxxxxx>; RDMA mailing list <linux-
> > rdma@xxxxxxxxxxxxxxx>; Daniel Jurgens <danielj@xxxxxxxxxxxx>; Mark Bloch
> > <markb@xxxxxxxxxxxx>; Parav Pandit <parav@xxxxxxxxxxxx>; Leon
> > Romanovsky <leon@xxxxxxxxxx>
> > Subject: [PATCH rdma-next v1 07/13] IB/ocrdma: Removed GID add/del null
> > routines
> > 
> > From: Parav Pandit <parav@xxxxxxxxxxxx>
> > 
> > add_gid() and del_gid() are optional callback routines.
> > ib_core ignores invoking them while updating GID table entries if they are not
> > implemented by provider drivers. Therefore remove them.
> > 
> > Reviewed-by: Daniel Jurgens <danielj@xxxxxxxxxxxx>
> > Reviewed-by: Mark Bloch <markb@xxxxxxxxxxxx>
> > Signed-off-by: Parav Pandit <parav@xxxxxxxxxxxx>
> > Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
> >  drivers/infiniband/hw/ocrdma/ocrdma_main.c  |  2 --
> > drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 16 ----------------
> > drivers/infiniband/hw/ocrdma/ocrdma_verbs.h | 10 ----------
> >  3 files changed, 28 deletions(-)
> > 
> [..]
> 
> I realized lately that this breaks the ocrdma driver.
> ib_cache_update() looks at the add_gid(), del_gid() pointer
> initialization to figure out whether to build sw_cache or not using
> rdma_cap_roce_gid_table() API.  So need to revert this patch.  Sorry
> for the overlook.

Oy, I missed that too..

Since we both missed it, and it is crazy to require drivers to have
empty functions, lets not go back to it?

How about adding a flag someplace and not test for add_gid/del_gid?

Whichever, please send a patch, quickly, let us no get to the merge
window with this unfixed..

Jason
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