Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2d75b2bc authored by Achiad Shochat's avatar Achiad Shochat Committed by David S. Miller
Browse files

net/mlx5e: Add ethtool RSS configuration options 



- get_rxfh_key_size
- get_rxfh_indir_size
- get/set_rxfh indirection table and RSS Toeplitz hash key
- get_rxnfc

Signed-off-by: default avatarAchiad Shochat <achiad@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 936896e9

drivers/net/ethernet/mellanox/mlx5/core/en.h

+5 −2
Original line number Diff line number Diff line
@@ -272,9 +272,10 @@ struct mlx5e_params { 
	u16 min_rx_wqes;

	bool lro_en;

	u32 lro_wqe_sz;

	u8  rss_hfunc;

	u16 tx_max_inline;

	u8  rss_hfunc;

	u8  toeplitz_hash_key[40];

	u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE];

};



enum {
@@ -571,6 +572,8 @@ int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto, 
void mlx5e_enable_vlan_filter(struct mlx5e_priv *priv);

void mlx5e_disable_vlan_filter(struct mlx5e_priv *priv);



int mlx5e_redirect_rqt(struct mlx5e_priv *priv, enum mlx5e_rqt_ix rqt_ix);



int mlx5e_open_locked(struct net_device *netdev);

int mlx5e_close_locked(struct net_device *netdev);

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

+63 −8
Original line number Diff line number Diff line
@@ -684,11 +684,31 @@ out: 
	return err;

}



static u32 mlx5e_get_rxfh_key_size(struct net_device *netdev)

{

	struct mlx5e_priv *priv = netdev_priv(netdev);



	return sizeof(priv->params.toeplitz_hash_key);

}



static u32 mlx5e_get_rxfh_indir_size(struct net_device *netdev)

{

	return MLX5E_INDIR_RQT_SIZE;

}



static int mlx5e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,

			  u8 *hfunc)

{

	struct mlx5e_priv *priv = netdev_priv(netdev);



	if (indir)

		memcpy(indir, priv->params.indirection_rqt,

		       sizeof(priv->params.indirection_rqt));



	if (key)

		memcpy(key, priv->params.toeplitz_hash_key,

		       sizeof(priv->params.toeplitz_hash_key));



	if (hfunc)

		*hfunc = priv->params.rss_hfunc;
@@ -699,28 +719,60 @@ static int mlx5e_set_rxfh(struct net_device *dev, const u32 *indir, 
			  const u8 *key, const u8 hfunc)

{

	struct mlx5e_priv *priv = netdev_priv(dev);

	bool close_open;

	int err = 0;



	if (hfunc == ETH_RSS_HASH_NO_CHANGE)

		return 0;



	if ((hfunc != ETH_RSS_HASH_XOR) &&

	if ((hfunc != ETH_RSS_HASH_NO_CHANGE) &&

	    (hfunc != ETH_RSS_HASH_XOR) &&

	    (hfunc != ETH_RSS_HASH_TOP))

		return -EINVAL;



	mutex_lock(&priv->state_lock);



	priv->params.rss_hfunc = hfunc;

	if (test_bit(MLX5E_STATE_OPENED, &priv->state)) {

		mlx5e_close_locked(dev);

		err = mlx5e_open_locked(dev);

	if (indir) {

		memcpy(priv->params.indirection_rqt, indir,

		       sizeof(priv->params.indirection_rqt));

		mlx5e_redirect_rqt(priv, MLX5E_INDIRECTION_RQT);

	}



	close_open = (key || (hfunc != ETH_RSS_HASH_NO_CHANGE)) &&

		     test_bit(MLX5E_STATE_OPENED, &priv->state);

	if (close_open)

		mlx5e_close_locked(dev);



	if (key)

		memcpy(priv->params.toeplitz_hash_key, key,

		       sizeof(priv->params.toeplitz_hash_key));



	if (hfunc != ETH_RSS_HASH_NO_CHANGE)

		priv->params.rss_hfunc = hfunc;



	if (close_open)

		err = mlx5e_open_locked(priv->netdev);



	mutex_unlock(&priv->state_lock);



	return err;

}



static int mlx5e_get_rxnfc(struct net_device *netdev,

			   struct ethtool_rxnfc *info, u32 *rule_locs)

{

	struct mlx5e_priv *priv = netdev_priv(netdev);

	int err = 0;



	switch (info->cmd) {

	case ETHTOOL_GRXRINGS:

		info->data = priv->params.num_channels;

		break;

	default:

		err = -EOPNOTSUPP;

		break;

	}



	return err;

}



static int mlx5e_get_tunable(struct net_device *dev,

			     const struct ethtool_tunable *tuna,

			     void *data)
@@ -793,8 +845,11 @@ const struct ethtool_ops mlx5e_ethtool_ops = { 
	.set_coalesce      = mlx5e_set_coalesce,

	.get_settings      = mlx5e_get_settings,

	.set_settings      = mlx5e_set_settings,

	.get_rxfh_key_size   = mlx5e_get_rxfh_key_size,

	.get_rxfh_indir_size = mlx5e_get_rxfh_indir_size,

	.get_rxfh          = mlx5e_get_rxfh,

	.set_rxfh          = mlx5e_set_rxfh,

	.get_rxnfc         = mlx5e_get_rxnfc,

	.get_tunable       = mlx5e_get_tunable,

	.set_tunable       = mlx5e_set_tunable,

};

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

+6 −1
Original line number Diff line number Diff line
@@ -1184,6 +1184,7 @@ static void mlx5e_fill_indir_rqt_rqns(struct mlx5e_priv *priv, void *rqtc) 
		if (priv->params.rss_hfunc == ETH_RSS_HASH_XOR)

			ix = mlx5e_bits_invert(i, MLX5E_LOG_INDIR_RQT_SIZE);



		ix = priv->params.indirection_rqt[ix];

		ix = ix % priv->params.num_channels;

		MLX5_SET(rqtc, rqtc, rq_num[i],

			 test_bit(MLX5E_STATE_OPENED, &priv->state) ?
@@ -1242,7 +1243,7 @@ static int mlx5e_create_rqt(struct mlx5e_priv *priv, enum mlx5e_rqt_ix rqt_ix) 
	return err;

}



static int mlx5e_redirect_rqt(struct mlx5e_priv *priv, enum mlx5e_rqt_ix rqt_ix)

int mlx5e_redirect_rqt(struct mlx5e_priv *priv, enum mlx5e_rqt_ix rqt_ix)

{

	struct mlx5_core_dev *mdev = priv->mdev;

	u32 *in;
@@ -1912,6 +1913,7 @@ static void mlx5e_build_netdev_priv(struct mlx5_core_dev *mdev, 
				    int num_channels)

{

	struct mlx5e_priv *priv = netdev_priv(netdev);

	int i;



	priv->params.log_sq_size           =

		MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE;
@@ -1935,6 +1937,9 @@ static void mlx5e_build_netdev_priv(struct mlx5_core_dev *mdev, 
	netdev_rss_key_fill(priv->params.toeplitz_hash_key,

			    sizeof(priv->params.toeplitz_hash_key));



	for (i = 0; i < MLX5E_INDIR_RQT_SIZE; i++)

		priv->params.indirection_rqt[i] = i % num_channels;



	priv->params.lro_en = false && !!MLX5_CAP_ETH(priv->mdev, lro_cap);

	priv->params.lro_wqe_sz            =

		MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ;