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net/mlx5e: Correct the calculation of max channels for rep
Correct the calculation of maximum channels of rep to better utilize
the hardware resources and allow a larger scale of reps.
This will allow creation of all virtual ports configured.
Fixes: 473baf2e9e
("net/mlx5e: Allow profile-specific limitation on max num of channels")
Signed-off-by: Moshe Tal <moshet@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
parent
77422a8f6f
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3 changed files with 18 additions and 2 deletions
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@ -1220,6 +1220,7 @@ mlx5e_tx_mpwqe_supported(struct mlx5_core_dev *mdev)
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MLX5_CAP_ETH(mdev, enhanced_multi_pkt_send_wqe);
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}
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int mlx5e_get_pf_num_tirs(struct mlx5_core_dev *mdev);
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int mlx5e_priv_init(struct mlx5e_priv *priv,
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const struct mlx5e_profile *profile,
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struct net_device *netdev,
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@ -5221,6 +5221,15 @@ mlx5e_calc_max_nch(struct mlx5_core_dev *mdev, struct net_device *netdev,
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return max_nch;
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}
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int mlx5e_get_pf_num_tirs(struct mlx5_core_dev *mdev)
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{
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/* Indirect TIRS: 2 sets of TTCs (inner + outer steering)
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* and 1 set of direct TIRS
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*/
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return 2 * MLX5E_NUM_INDIR_TIRS
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+ mlx5e_profile_max_num_channels(mdev, &mlx5e_nic_profile);
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}
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/* mlx5e generic netdev management API (move to en_common.c) */
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int mlx5e_priv_init(struct mlx5e_priv *priv,
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const struct mlx5e_profile *profile,
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@ -604,10 +604,16 @@ bool mlx5e_eswitch_vf_rep(const struct net_device *netdev)
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return netdev->netdev_ops == &mlx5e_netdev_ops_rep;
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}
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/* One indirect TIR set for outer. Inner not supported in reps. */
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#define REP_NUM_INDIR_TIRS MLX5E_NUM_INDIR_TIRS
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static int mlx5e_rep_max_nch_limit(struct mlx5_core_dev *mdev)
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{
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return (1 << MLX5_CAP_GEN(mdev, log_max_tir)) /
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mlx5_eswitch_get_total_vports(mdev);
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int max_tir_num = 1 << MLX5_CAP_GEN(mdev, log_max_tir);
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int num_vports = mlx5_eswitch_get_total_vports(mdev);
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return (max_tir_num - mlx5e_get_pf_num_tirs(mdev)
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- (num_vports * REP_NUM_INDIR_TIRS)) / num_vports;
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}
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static void mlx5e_build_rep_params(struct net_device *netdev)
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