diff options
| author | Yishai Hadas <yishaih@mellanox.com> | 2019-07-23 09:57:29 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-07-25 17:45:48 +0300 |
| commit | b7165bd0d6cbb93732559be6ea8774653b204480 (patch) | |
| tree | 8e318ad2c90af43da4499b135e30742556fb30ee | |
| parent | d191152f43a5869d7dbb50dd2a7a4b3b8b71f1f0 (diff) | |
| download | linux-b7165bd0d6cbb93732559be6ea8774653b204480.tar.xz | |
IB/mlx5: Fix RSS Toeplitz setup to be aligned with the HW specification
The specification for the Toeplitz function doesn't require to set the key
explicitly to be symmetric. In case a symmetric functionality is required
a symmetric key can be simply used.
Wrongly forcing the algorithm to symmetric causes the wrong packet
distribution and a performance degradation.
Link: https://lore.kernel.org/r/20190723065733.4899-7-leon@kernel.org
Cc: <stable@vger.kernel.org> # 4.7
Fixes: 28d6137008b2 ("IB/mlx5: Add RSS QP support")
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Alex Vainman <alexv@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| -rw-r--r-- | drivers/infiniband/hw/mlx5/qp.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 615cc6771516..379328b2598f 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -1713,7 +1713,6 @@ static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, } MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_TOEPLITZ); - MLX5_SET(tirc, tirc, rx_hash_symmetric, 1); memcpy(rss_key, ucmd.rx_hash_key, len); break; } |