diff options
| author | Aya Levin <ayal@nvidia.com> | 2022-01-17 11:46:35 +0200 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@nvidia.com> | 2022-02-14 22:30:48 -0800 |
| commit | c27bd1718c06eb356a4ea0ab8588ad442d953947 (patch) | |
| tree | 68b9c163fd2c0f94084f18429d0558f805d2d679 /drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c | |
| parent | 9536923d3f353873e54d96769fbd2e7f867a73e1 (diff) | |
net/mlx5e: Read max WQEBBs on the SQ from firmware
Prior to this patch the maximal value for max WQEBBs (WQE Basic Blocks,
where WQE is a Work Queue Element) on the TX side was assumed to be 16
(fixed value). All firmware versions till today comply to this. In order
to be more flexible and resilient, read from FW the corresponding:
max_wqe_sz_sq. This value describes the maximum WQE size given in bytes,
thus max WQEBBs is given by the division in WQEBB's byte size. The
driver uses the top between 16 and the division result. This ensures
synchronization between driver and firmware and avoids unexpected
behavior. Store this value on the different SQs (Send Queues) for easy
access.
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c index ad4e5e759426..335b20b6383b 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c @@ -448,7 +448,7 @@ static void mlx5e_ptp_build_sq_param(struct mlx5_core_dev *mdev, wq = MLX5_ADDR_OF(sqc, sqc, wq); MLX5_SET(wq, wq, log_wq_sz, params->log_sq_size); - param->stop_room = mlx5e_stop_room_for_wqe(MLX5_SEND_WQE_MAX_WQEBBS); + param->stop_room = mlx5e_stop_room_for_max_wqe(mdev); mlx5e_build_tx_cq_param(mdev, params, ¶m->cqp); } |