IB/mlx5: Fix post send fence logic

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commit c9b254955b upstream.

If the caller specified IB_SEND_FENCE in the send flags of the work
request and no previous work request stated that the successive one
should be fenced, the work request would be executed without a fence.
This could result in RDMA read or atomic operations failure due to a MR
being invalidated. Fix this by adding the mlx5 enumeration for fencing
RDMA/atomic operations and fix the logic to apply this.

Fixes: e126ba97db ('mlx5: Add driver for Mellanox Connect-IB adapters')
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

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Eli Cohen 2016-06-22 17:27:26 +03:00 • committed by Ben Hutchings

parent 0993de3256

commit 972fb25e0b

2 changed files with 5 additions and 3 deletions

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7

drivers/infiniband/hw/mlx5/qp.c

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1

include/linux/mlx5/qp.h

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