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From: Leon Romanovsky <leon@kernel.org>
To: Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>,
	RDMA mailing list <linux-rdma@vger.kernel.org>,
	Hadar Hen Zion <hadarh@mellanox.com>,
	Matan Barak <matanb@mellanox.com>,
	Michael J Ruhl <michael.j.ruhl@intel.com>,
	Noa Osherovich <noaos@mellanox.com>,
	Raed Salem <raeds@mellanox.com>,
	Yishai Hadas <yishaih@mellanox.com>,
	Saeed Mahameed <saeedm@mellanox.com>,
	linux-netdev <netdev@vger.kernel.org>
Subject: [PATCH rdma-next 02/12] RDMA/uverbs: Check existence of create_flow callback
Date: Sun, 24 Jun 2018 11:23:43 +0300	[thread overview]
Message-ID: <20180624082353.16138-3-leon@kernel.org> (raw)
In-Reply-To: <20180624082353.16138-1-leon@kernel.org>

From: Leon Romanovsky <leonro@mellanox.com>

In the accepted series "Refactor ib_uverbs_write path", we presented the
roadmap to get rid of uverbs_cmd_mask and uverbs_ex_cmd_mask fields in
favor of simple check of function pointer. So let's put NULL check of
create_flow function callback despite the fact that uverbs_ex_cmd_mask
still exists.

Link: https://www.spinics.net/lists/linux-rdma/msg60753.html
Suggested-by: Michael J Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
---
 drivers/infiniband/core/uverbs_cmd.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index c842a9423fbf..6251d80db732 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -3565,6 +3565,11 @@ int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
 		goto err_put;
 	}
 
+	if (!qp->device->create_flow) {
+		err = -EOPNOTSUPP;
+		goto err_put;
+	}
+
 	flow_attr = kzalloc(struct_size(flow_attr, flows,
 					cmd.flow_attr.num_of_specs), GFP_KERNEL);
 	if (!flow_attr) {
-- 
2.14.4

  parent reply	other threads:[~2018-06-24  8:24 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-24  8:23 [PATCH rdma-next 00/12] RDMA fixes 2018-06-24 Leon Romanovsky
2018-06-24  8:23 ` [PATCH rdma-next 01/12] RDMA/uverbs: Protect from attempts to create flows on unsupported QP Leon Romanovsky
2018-06-25 21:14   ` Jason Gunthorpe
2018-06-24  8:23 ` Leon Romanovsky [this message]
2018-06-24  8:23 ` [PATCH rdma-next 03/12] RDMA/verbs: Drop kernel variant of create_flow Leon Romanovsky
2018-06-24  8:23 ` [PATCH rdma-next 04/12] RDMA/verbs: Drop kernel variant of destroy_flow Leon Romanovsky
2018-06-24  8:23 ` [PATCH mlx5-next 05/12] net/mlx5: Rate limit errors in command interface Leon Romanovsky
2018-06-27  5:48   ` Leon Romanovsky
2018-06-24  8:23 ` [PATCH rdma-next 06/12] RDMA/uverbs: Don't overwrite NULL pointer with ZERO_SIZE_PTR Leon Romanovsky
2018-06-24 19:57   ` Jason Gunthorpe
2018-06-25  8:08     ` Leon Romanovsky
2018-06-24  8:23 ` [PATCH rdma-next 07/12] RDMA/umem: Don't check for negative return value of dma_map_sg_attrs() Leon Romanovsky
2018-06-24  8:23 ` [PATCH rdma-next 08/12] overflow.h: Add arithmetic shift helper Leon Romanovsky
     [not found]   ` <CAKwiHFhgsyWYD+q+JFb2HJEphnjiiOp=o4Airv3MW031q2jx8w@mail.gmail.com>
2018-06-25 17:11     ` Jason Gunthorpe
2018-06-26  4:16       ` Leon Romanovsky
     [not found]       ` <CAKwiHFiRYbyiJqDYCgKXKZYRr0KjCt8q9AwKwfqoCA1sT2KFyQ@mail.gmail.com>
2018-06-26 11:37         ` Leon Romanovsky
2018-06-26 17:54         ` Jason Gunthorpe
     [not found]           ` <CAKwiHFgchr+6HYOZ4e4e1vzL9cFabe6eonNNM8NTWZypazcuKA@mail.gmail.com>
2018-06-27 17:39             ` Leon Romanovsky
2018-06-27 18:10             ` Jason Gunthorpe
2018-06-27 18:22               ` Leon Romanovsky
2018-06-27 21:35                 ` Rasmus Villemoes
2018-06-27 18:44               ` Kees Cook
2018-08-01  9:36           ` Peter Zijlstra
2018-08-01 16:14             ` Jason Gunthorpe
2018-06-26  4:24     ` Leon Romanovsky
2018-06-24  8:23 ` [PATCH rdma-next 09/12] RDMA/mlx5: Fix shift overflow in mlx5_ib_create_wq Leon Romanovsky
2018-06-24 19:56   ` Jason Gunthorpe
2018-06-25  8:10     ` Leon Romanovsky
2018-06-25 14:58       ` Jason Gunthorpe
2018-06-24  8:23 ` [PATCH rdma-next 10/12] RDMA/mlx5: Reuse existed shift_overlow helper Leon Romanovsky
2018-06-24  8:23 ` [PATCH rdma-next 11/12] RDMA/uverbs: Remove redundant check Leon Romanovsky
2018-06-24  8:23 ` [PATCH rdma-next 12/12] RDMA/uverbs: Fix slab-out-of-bounds in ib_uverbs_ex_create_flow Leon Romanovsky
2018-06-25 21:34 ` [PATCH rdma-next 00/12] RDMA fixes 2018-06-24 Jason Gunthorpe
2018-06-26  4:21   ` Leon Romanovsky
2018-06-26 20:39     ` Jason Gunthorpe
2018-06-27  5:47       ` Leon Romanovsky

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