diff options
| author | Tariq Toukan <tariqt@mellanox.com> | 2019-07-11 11:20:22 +0300 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@mellanox.com> | 2019-08-01 12:33:30 -0700 |
| commit | 68865419ba1bf502a5bd279a500deda64000249d (patch) | |
| tree | 6323b79a6d2d18fbde937462f0cba60af248a7b4 /drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h | |
| parent | 558101f1b9807b34d8eeefb352d11e642b7e98dd (diff) | |
net/mlx5e: Tx, Strict the room needed for SQ edge NOPs
We use NOPs to populate the WQ fragment edge if the WQE does not fit
in frag, to avoid WQEs crossing a page boundary (or wrap-around the WQ).
The upper bound on the needed number of NOPs is one WQEBB less than
the largest possible WQE, for otherwise the WQE would certainly fit.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h index ddfe19adb3d9..7da22b413a48 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h @@ -6,7 +6,7 @@ #include "en.h" -#define MLX5E_SQ_NOPS_ROOM MLX5_SEND_WQE_MAX_WQEBBS +#define MLX5E_SQ_NOPS_ROOM (MLX5_SEND_WQE_MAX_WQEBBS - 1) #define MLX5E_SQ_STOP_ROOM (MLX5_SEND_WQE_MAX_WQEBBS +\ MLX5E_SQ_NOPS_ROOM) |