Commit 83439f3c authored by Khalid Manaa's avatar Khalid Manaa Committed by Saeed Mahameed
Browse files

net/mlx5e: Add HW-GRO offload 



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

Signed-off-by: default avatarBen Ben-Ishay <benishay@nvidia.com>
Signed-off-by: default avatarKhalid Manaa <khalidm@nvidia.com>
Reviewed-by: default avatarTariq Toukan <tariqt@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
parent def09e7b

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

+39 −0
Original line number Diff line number Diff line
@@ -3549,6 +3549,35 @@ static int set_feature_lro(struct net_device *netdev, bool enable) 
	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)