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RDMA/mlx5: Disable out-of-order in integrity enabled QPs

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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@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/362de42cdc7a541afa5b1fd0ec6ae706061764a2.1679230449.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Or Har-Toov 2023-03-19 14:59:31 +02:00 committed by Leon Romanovsky
parent 6e2a3a324a
commit 742948cc02
1 changed files with 8 additions and 0 deletions
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8
drivers/infiniband/hw/mlx5/qp.c
View file

@ -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;
@ -2519,6 +2523,10 @@ 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)