[PATCH v12 17/26] net/mlx5e: Refactor doorbell function to allow avoiding a completion
From: Aurelien Aptel <hidden>
Date: 2023-07-12 17:30:41
Also in:
linux-nvme
Subsystem:
mellanox mlx5 core vpi driver, networking drivers, the rest · Maintainers:
Saeed Mahameed, Leon Romanovsky, Tariq Toukan, Mark Bloch, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Or Gerlitz <redacted> Currently the doorbell function always asks for completion to be generated. Refactor things such that all existing call sites are untouched and no branching is added. This is done using inner function which can be invoked directly in cases completion is not desired (as done in downstream patch). No functional change here. Signed-off-by: Or Gerlitz <redacted> Signed-off-by: Aurelien Aptel <redacted> --- drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
index cdd7fbf218ae..3807536932e4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h@@ -256,10 +256,10 @@ static inline u16 mlx5e_icosq_get_next_pi(struct mlx5e_icosq *sq, u16 size) } static inline void -mlx5e_notify_hw(struct mlx5_wq_cyc *wq, u16 pc, void __iomem *uar_map, - struct mlx5_wqe_ctrl_seg *ctrl) +__mlx5e_notify_hw(struct mlx5_wq_cyc *wq, u16 pc, void __iomem *uar_map, + struct mlx5_wqe_ctrl_seg *ctrl, u8 cq_update) { - ctrl->fm_ce_se |= MLX5_WQE_CTRL_CQ_UPDATE; + ctrl->fm_ce_se |= cq_update; /* ensure wqe is visible to device before updating doorbell record */ dma_wmb();
@@ -273,6 +273,13 @@ mlx5e_notify_hw(struct mlx5_wq_cyc *wq, u16 pc, void __iomem *uar_map, mlx5_write64((__be32 *)ctrl, uar_map); } +static inline void +mlx5e_notify_hw(struct mlx5_wq_cyc *wq, u16 pc, void __iomem *uar_map, + struct mlx5_wqe_ctrl_seg *ctrl) +{ + __mlx5e_notify_hw(wq, pc, uar_map, ctrl, MLX5_WQE_CTRL_CQ_UPDATE); +} + static inline void mlx5e_cq_arm(struct mlx5e_cq *cq) { struct mlx5_core_cq *mcq;
--
2.34.1