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net/mlx5e: Add HW-GRO offload

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This commit introduces HW-GRO offload by using the SHAMPO feature
- Add set feature handler for HW-GRO.

Signed-off-by: Ben Ben-Ishay <benishay@nvidia.com>
Signed-off-by: Khalid Manaa <khalidm@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Khalid Manaa 2021-05-26 10:01:34 +03:00 committed by Saeed Mahameed
parent def09e7bbc
commit 83439f3c37
1 changed files with 39 additions and 0 deletions
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39
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
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@ -3549,6 +3549,35 @@ out:
return err;
}
static int set_feature_hw_gro(struct net_device *netdev, bool enable)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5e_params new_params;
bool reset = true;
int err = 0;
mutex_lock(&priv->state_lock);
new_params = priv->channels.params;
if (enable) {
new_params.packet_merge.type = MLX5E_PACKET_MERGE_SHAMPO;
new_params.packet_merge.shampo.match_criteria_type =
MLX5_RQC_SHAMPO_MATCH_CRITERIA_TYPE_EXTENDED;
new_params.packet_merge.shampo.alignment_granularity =
MLX5_RQC_SHAMPO_NO_MATCH_ALIGNMENT_GRANULARITY_STRIDE;
} else if (new_params.packet_merge.type == MLX5E_PACKET_MERGE_SHAMPO) {
new_params.packet_merge.type = MLX5E_PACKET_MERGE_NONE;
} else {
goto out;
}
err = mlx5e_safe_switch_params(priv, &new_params,
mlx5e_modify_tirs_packet_merge_ctx, NULL, reset);
out:
mutex_unlock(&priv->state_lock);
return err;
}
static int set_feature_cvlan_filter(struct net_device *netdev, bool enable)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
@ -3722,6 +3751,7 @@ int mlx5e_set_features(struct net_device *netdev, netdev_features_t features)
mlx5e_handle_feature(netdev, &oper_features, features, feature, handler)
err |= MLX5E_HANDLE_FEATURE(NETIF_F_LRO, set_feature_lro);
err |= MLX5E_HANDLE_FEATURE(NETIF_F_GRO_HW, set_feature_hw_gro);
err |= MLX5E_HANDLE_FEATURE(NETIF_F_HW_VLAN_CTAG_FILTER,
set_feature_cvlan_filter);
err |= MLX5E_HANDLE_FEATURE(NETIF_F_HW_TC, set_feature_hw_tc);
@ -3782,6 +3812,10 @@ static netdev_features_t mlx5e_fix_features(struct net_device *netdev,
netdev_warn(netdev, "Disabling LRO, not supported in legacy RQ\n");
features &= ~NETIF_F_LRO;
}
if (features & NETIF_F_GRO_HW) {
netdev_warn(netdev, "Disabling HW-GRO, not supported in legacy RQ\n");
features &= ~NETIF_F_GRO_HW;
}
}
if (MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS)) {
@ -4723,6 +4757,10 @@ static void mlx5e_build_nic_netdev(struct net_device *netdev)
netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
netdev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
if (!!MLX5_CAP_GEN(mdev, shampo) &&
mlx5e_check_fragmented_striding_rq_cap(mdev))
netdev->hw_features |= NETIF_F_GRO_HW;
if (mlx5e_tunnel_any_tx_proto_supported(mdev)) {
netdev->hw_enc_features |= NETIF_F_HW_CSUM;
netdev->hw_enc_features |= NETIF_F_TSO;
@ -4773,6 +4811,7 @@ static void mlx5e_build_nic_netdev(struct net_device *netdev)
if (fcs_enabled)
netdev->features &= ~NETIF_F_RXALL;
netdev->features &= ~NETIF_F_LRO;
netdev->features &= ~NETIF_F_GRO_HW;
netdev->features &= ~NETIF_F_RXFCS;
#define FT_CAP(f) MLX5_CAP_FLOWTABLE(mdev, flow_table_properties_nic_receive.f)