Daniel Jurgens 35a9ebd920 net/mlx5: Fix race for multiple RoCE enable ...

[ Upstream commit 734dc065fc41f6143ff88225aa5d335cb1e0f6aa ]

There are two potential problems with the existing implementation.

1. Enable and disable can race after the atomic operations.
2. If a command fails the refcount is left in an inconsistent state.

Introduce a lock and perform error checking.

Fixes: a6f7d2aff623 ("net/mlx5: Add support for multiple RoCE enable")
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-04-12 12:32:17 +02:00

..

cmd.h

…

cq.h

IB/mlx5: Support 4k UAR for libmlx5

2017-01-09 20:25:09 +02:00

device.h

net/mlx5: Fix FPGA capability location

2017-09-28 07:23:09 +03:00

doorbell.h

IB/mlx5: Use blue flame register allocator in mlx5_ib

2017-01-09 20:25:08 +02:00

driver.h

net/mlx5: Fix race for multiple RoCE enable

2018-04-12 12:32:17 +02:00

fs.h

net/mlx5: Use underlay QPN from the root name space

2017-05-14 13:33:45 +03:00

mlx5_ifc_fpga.h

net/mlx5: Accel, Add IPSec acceleration interface

2017-06-27 16:36:47 +03:00

mlx5_ifc.h

{net,ib}/mlx5: Don't disable local loopback multicast traffic when needed

2018-01-31 14:03:46 +01:00

port.h

net/mlx5e: DCBNL, Implement tc with ets type and zero bandwidth

2017-10-26 00:47:27 -07:00

qp.h

RDMA/mlx5: Fix existence check for extended address vector

2017-08-04 14:24:05 -04:00

srq.h

net/mlx5: Add XRQ support

2017-08-29 08:30:20 -04:00

transobj.h

…

vport.h

net/mlx5: Add raw ethernet local loopback firmware command

2017-07-24 10:26:16 -04:00