From: Christoph Hellwig <hch@infradead.org>
To: Leon Romanovsky <leon@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>,
Doug Ledford <dledford@redhat.com>,
Jason Gunthorpe <jgg@nvidia.com>,
linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org,
Mark Zhang <markz@mellanox.com>
Subject: Re: [PATCH rdma-next 7/7] RDMA/core: Create clean QP creations interface for uverbs
Date: Wed, 21 Jul 2021 08:20:49 +0100 [thread overview]
Message-ID: <YPfK0VHovcc45heP@infradead.org> (raw)
In-Reply-To: <YPfI4+M/Ula5a0KZ@infradead.org>
On Wed, Jul 21, 2021 at 08:12:35AM +0100, Christoph Hellwig wrote:
> On Wed, Jul 21, 2021 at 10:06:06AM +0300, Leon Romanovsky wrote:
> > You will need to add some sort of "if qp tpye" for ib_create_qp_uverbs() callers,
> > because they always provide udata != NULL.
> >
> > After this series, the callers look like this:
> >
> > 1438 qp = ib_create_qp_uverbs(device, pd, &attr, &attrs->driver_udata, obj);
> > ^^^^^^^^^ not NULL
> >
> > So instead of bothering callers, I implemented it here with one "if".
>
> Sorry if my mail was confusing. I don't want it in the callers, I
> want it as deep down in the stack as possible instead of having the
> strange wrapper.
In fact ib_create_qp_user already sets udata to NULL for IB_QPT_XRC_TGT,
and _ib_create_qp/create_qp ignores the caller if the udata is NULL.
So I think you can just remove the wrapper and we're already fine.
next prev parent reply other threads:[~2021-07-21 7:27 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-21 6:12 [PATCH rdma-next 0/7] Separate user/kernel QP creation logic Leon Romanovsky
2021-07-21 6:13 ` [PATCH rdma-next 1/7] RDMA/mlx5: Delete not-available udata check Leon Romanovsky
2021-07-21 6:13 ` [PATCH rdma-next 2/7] RDMA/core: Delete duplicated and unreachable code Leon Romanovsky
2021-07-21 6:13 ` [PATCH rdma-next 3/7] RDMA/core: Remove protection from wrong in-kernel API usage Leon Romanovsky
2021-07-21 6:41 ` Christoph Hellwig
2021-07-21 6:56 ` Leon Romanovsky
2021-07-21 6:13 ` [PATCH rdma-next 4/7] RDMA/core: Reorganize create QP low-level functions Leon Romanovsky
2021-07-21 6:45 ` Christoph Hellwig
2021-07-21 6:58 ` Leon Romanovsky
2021-07-21 7:47 ` Mark Zhang
2021-07-21 7:49 ` Leon Romanovsky
2021-07-21 6:13 ` [PATCH rdma-next 5/7] RDMA/core: Configure selinux QP during creation Leon Romanovsky
2021-07-21 6:13 ` [PATCH rdma-next 6/7] RDMA/core: Properly increment and decrement QP usecnts Leon Romanovsky
2021-07-21 6:13 ` [PATCH rdma-next 7/7] RDMA/core: Create clean QP creations interface for uverbs Leon Romanovsky
2021-07-21 6:48 ` Christoph Hellwig
2021-07-21 7:06 ` Leon Romanovsky
2021-07-21 7:12 ` Christoph Hellwig
2021-07-21 7:20 ` Christoph Hellwig [this message]
2021-07-21 7:31 ` Leon Romanovsky
2021-07-21 7:30 ` Leon Romanovsky
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