From: Or Har-Toov <ohartoov@xxxxxxxxxx>
Set retry_mode to GO_BACK_N when qp is created with INTEGRITY_EN flag
because out-of-order is not supported when doing HW offload of signature
operations.
Signed-off-by: Or Har-Toov <ohartoov@xxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
---
drivers/infiniband/hw/mlx5/qp.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index f04adc18e63b..d32b644885b3 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -60,6 +60,10 @@ enum raw_qp_set_mask_map {
MLX5_RAW_QP_RATE_LIMIT = 1UL << 1,
};
+enum {
+ MLX5_QP_RM_GO_BACK_N = 0x1,
+};
+
struct mlx5_modify_raw_qp_param {
u16 operation;
@@ -2521,6 +2525,10 @@ static int create_kernel_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
if (qp->flags & IB_QP_CREATE_IPOIB_UD_LSO)
MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1);
+ if (qp->flags & IB_QP_CREATE_INTEGRITY_EN &&
+ MLX5_CAP_GEN(mdev, go_back_n))
+ MLX5_SET(qpc, qpc, retry_mode, MLX5_QP_RM_GO_BACK_N);
+
err = mlx5_qpc_create_qp(dev, &base->mqp, in, inlen, out);
kvfree(in);
if (err)
--
2.39.2
