diff options
| author | Maxim Mikityanskiy <maximmi@nvidia.com> | 2022-09-29 00:21:46 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-09-30 07:55:46 -0700 |
| commit | 6470d2e7e8ed8e9dd560d8dc3e09d1100a17ee26 (patch) | |
| tree | c0b3d8d6766c3b45d43e356cba0534faa97b509f /drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | |
| parent | c4418f34955440fbdebd0b00771bdd76e2cd3f63 (diff) | |
net/mlx5e: xsk: Use KSM for unaligned XSK
UMR MTTs used in striding RQ have certain alignment requirements. While
it's guaranteed to work when UMR pages are aligned to the UMR page size,
in practice it works then UMR pages are aligned to 8 bytes. However,
it's still not enough flexibility for the unaligned mode of XSK. This
patch leverages KSM to map UMR pages without alignment requirements,
when unaligned XSK is active. The downside is that KSM entries are twice
as big as MTTs, which limits the maximum WQE size, so regular RQs and
aligned XSK continue using MTTs.
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index c28c1d369855..26f1ac4683e7 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -314,7 +314,7 @@ void mlx5e_ethtool_get_ringparam(struct mlx5e_priv *priv, /* Limitation for regular RQ. XSK RQ may clamp the queue length in * mlx5e_mpwqe_get_log_rq_size. */ - u8 max_log_mpwrq_pkts = mlx5e_mpwrq_max_log_rq_pkts(priv->mdev, PAGE_SHIFT); + u8 max_log_mpwrq_pkts = mlx5e_mpwrq_max_log_rq_pkts(priv->mdev, PAGE_SHIFT, false); param->rx_max_pending = 1 << min_t(u8, MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE, max_log_mpwrq_pkts); |