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Commit b6411739 authored by Vlad Zolotarov's avatar Vlad Zolotarov Committed by Jeff Kirsher
Browse files

ixgbevf: Add the appropriate ethtool ops to query RSS indirection table and key 



Added get_rxfh_indir_size, get_rxfh_key_size and get_rxfh ethtool_ops
callbacks implementations.

This enables the ethtool's "-x" and "--show-rxfh[-indir]" options for VF
devices.

This patch adds the support for 82599 and x540 devices only. Support for
other devices will be added later.

Signed-off-by: default avatarVlad Zolotarov <vladz@cloudius-systems.com>
Tested-by: default avatarPhil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent ad1431e2

drivers/net/ethernet/intel/ixgbevf/ethtool.c

+69 −0
Original line number Diff line number Diff line
@@ -794,6 +794,71 @@ static int ixgbevf_set_coalesce(struct net_device *netdev, 
	return 0;

}



static int ixgbevf_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,

			     u32 *rules __always_unused)

{

	struct ixgbevf_adapter *adapter = netdev_priv(dev);



	switch (info->cmd) {

	case ETHTOOL_GRXRINGS:

		info->data = adapter->num_rx_queues;

		return 0;

	default:

		hw_dbg(&adapter->hw, "Command parameters not supported\n");

		return -EOPNOTSUPP;

	}

}



static u32 ixgbevf_get_rxfh_indir_size(struct net_device *netdev)

{

	struct ixgbevf_adapter *adapter = netdev_priv(netdev);



	/* We support this operation only for 82599 and x540 at the moment */

	if (adapter->hw.mac.type < ixgbe_mac_X550_vf)

		return IXGBEVF_82599_RETA_SIZE;



	return 0;

}



static u32 ixgbevf_get_rxfh_key_size(struct net_device *netdev)

{

	struct ixgbevf_adapter *adapter = netdev_priv(netdev);



	/* We support this operation only for 82599 and x540 at the moment */

	if (adapter->hw.mac.type < ixgbe_mac_X550_vf)

		return IXGBEVF_RSS_HASH_KEY_SIZE;



	return 0;

}



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

			    u8 *hfunc)

{

	struct ixgbevf_adapter *adapter = netdev_priv(netdev);

	int err = 0;



	if (hfunc)

		*hfunc = ETH_RSS_HASH_TOP;



	/* If neither indirection table nor hash key was requested - just

	 * return a success avoiding taking any locks.

	 */

	if (!indir && !key)

		return 0;



	spin_lock_bh(&adapter->mbx_lock);

	if (indir)

		err = ixgbevf_get_reta_locked(&adapter->hw, indir,

					      adapter->num_rx_queues);



	if (!err && key)

		err = ixgbevf_get_rss_key_locked(&adapter->hw, key);



	spin_unlock_bh(&adapter->mbx_lock);



	return err;

}



static const struct ethtool_ops ixgbevf_ethtool_ops = {

	.get_settings		= ixgbevf_get_settings,

	.get_drvinfo		= ixgbevf_get_drvinfo,
@@ -811,6 +876,10 @@ static const struct ethtool_ops ixgbevf_ethtool_ops = { 
	.get_ethtool_stats	= ixgbevf_get_ethtool_stats,

	.get_coalesce		= ixgbevf_get_coalesce,

	.set_coalesce		= ixgbevf_set_coalesce,

	.get_rxnfc		= ixgbevf_get_rxnfc,

	.get_rxfh_indir_size	= ixgbevf_get_rxfh_indir_size,

	.get_rxfh_key_size	= ixgbevf_get_rxfh_key_size,

	.get_rxfh		= ixgbevf_get_rxfh,

};



void ixgbevf_set_ethtool_ops(struct net_device *netdev)