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Commit b8d39436 authored by Inbar Karmy's avatar Inbar Karmy Committed by David S. Miller
Browse files

net/mlx4_en: Limit the number of RX rings 



Limit the number of RX rings by the number of cores
in the system.

Signed-off-by: default avatarInbar Karmy <inbark@mellanox.com>
Signed-off-by: default avatarTariq Toukan <tariqt@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7e1dc5e9

drivers/net/ethernet/mellanox/mlx4/en_ethtool.c

+6 −1
Original line number Diff line number Diff line
@@ -1742,12 +1742,17 @@ static int mlx4_en_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd) 
	return err;

}



static int mlx4_en_get_max_num_rx_rings(struct net_device *dev)

{

	return min_t(int, num_online_cpus(), MAX_RX_RINGS);

}



static void mlx4_en_get_channels(struct net_device *dev,

				 struct ethtool_channels *channel)

{

	struct mlx4_en_priv *priv = netdev_priv(dev);



	channel->max_rx = MAX_RX_RINGS;

	channel->max_rx = mlx4_en_get_max_num_rx_rings(dev);

	channel->max_tx = priv->mdev->profile.max_num_tx_rings_p_up;



	channel->rx_count = priv->rx_ring_num;