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[rdma-next,2/3] RDMA/mlx5: Disable out-of-order in integrity enabled QPs

Message ID 362de42cdc7a541afa5b1fd0ec6ae706061764a2.1679230449.git.leon@kernel.org (mailing list archive)
State Awaiting Upstream
Delegated to: Netdev Maintainers
Headers show
Series Enable IB out-of-order by default in mlx5 | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Guessed tree name to be net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 18 this patch: 18
netdev/cc_maintainers success CCed 3 of 3 maintainers
netdev/build_clang success Errors and warnings before: 18 this patch: 18
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 18 this patch: 18
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 20 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Leon Romanovsky March 19, 2023, 12:59 p.m. UTC 
From: Or Har-Toov <ohartoov@nvidia.com>

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>
---
 drivers/infiniband/hw/mlx5/qp.c | 8 ++++++++
 1 file changed, 8 insertions(+)
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Patch

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)