[PATCH v4 net-next 14/21] net/mlx5e: KLM UMR helper macros

Boris Pismenny
2021-02-11T21:13:36Z

From: Ben Ben-Ishay <benishay@nvidia.com>

Add helper macros for posting KLM UMR WQE.

Signed-off-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Ben Ben-Ishay <benishay@nvidia.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Yoray Zack <yorayz@mellanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index 98be350849b2..1982e0a58be7 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -153,6 +153,24 @@ struct page_pool;
#define MLX5E_UMR_WQEBBS \
(DIV_ROUND_UP(MLX5E_UMR_WQE_INLINE_SZ, MLX5_SEND_WQE_BB))

+#define KLM_ALIGNMENT 4
+#define MLX5E_KLM_UMR_WQE_SZ(sgl_len)\
+ (sizeof(struct mlx5e_umr_wqe) +\
+ (sizeof(struct mlx5_klm) * (sgl_len)))
+
+#define MLX5E_KLM_UMR_WQEBBS(sgl_len)\
+ (DIV_ROUND_UP(MLX5E_KLM_UMR_WQE_SZ(sgl_len), MLX5_SEND_WQE_BB))
+
+#define MLX5E_KLM_UMR_DS_CNT(sgl_len)\
+ DIV_ROUND_UP(MLX5E_KLM_UMR_WQE_SZ(sgl_len), MLX5_SEND_WQE_DS)
+
+#define MLX5E_MAX_KLM_ENTRIES_PER_WQE(wqe_size)\
+ (((wqe_size) - sizeof(struct mlx5e_umr_wqe)) / sizeof(struct mlx5_klm))
+
+#define MLX5E_KLM_ENTRIES_PER_WQE(wqe_size)\
+ (MLX5E_MAX_KLM_ENTRIES_PER_WQE(wqe_size) -\
+ (MLX5E_MAX_KLM_ENTRIES_PER_WQE(wqe_size) % KLM_ALIGNMENT))
+
#define MLX5E_MSG_LEVEL NETIF_MSG_LINK

#define mlx5e_dbg(mlevel, priv, format, ...) \