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| author | Eli Cohen <eli@mellanox.com> | 2016-06-22 17:27:26 +0300 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-08-22 22:38:18 +0100 |
| commit | 972fb25e0b214289f85acf46675eefda2e574cf4 (patch) | |
| tree | 00ce04e727b0f077dc928e521e2bed220f3d2d1c /include | |
| parent | 0993de3256271f11b8a4bb48e29bfdc842cf7d98 (diff) | |
| download | lwn-972fb25e0b214289f85acf46675eefda2e574cf4.tar.gz lwn-972fb25e0b214289f85acf46675eefda2e574cf4.zip | |
IB/mlx5: Fix post send fence logic
commit c9b254955b9f8814966f5dabd34c39d0e0a2b437 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: e126ba97dba9 ('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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mlx5/qp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mlx5/qp.h b/include/linux/mlx5/qp.h index f190a94af174..ab1c14a56e6d 100644 --- a/include/linux/mlx5/qp.h +++ b/include/linux/mlx5/qp.h @@ -140,6 +140,7 @@ enum { enum { MLX5_FENCE_MODE_NONE = 0 << 5, MLX5_FENCE_MODE_INITIATOR_SMALL = 1 << 5, + MLX5_FENCE_MODE_FENCE = 2 << 5, MLX5_FENCE_MODE_STRONG_ORDERING = 3 << 5, MLX5_FENCE_MODE_SMALL_AND_FENCE = 4 << 5, }; |