Commit d5f7543c authored by Kuo Zhao's avatar Kuo Zhao Committed by David S. Miller
Browse files

gve: Get and set Rx copybreak via ethtool 



This adds support for getting and setting the RX copybreak
value via ethtool.

Reviewed-by: default avatarYangchun Fu <yangchun@google.com>
Signed-off-by: default avatarKuo Zhao <kuozhao@google.com>
Signed-off-by: default avatarDavid Awogbemila <awogbemila@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e7a08121

drivers/net/ethernet/google/gve/gve_ethtool.c

+34 −0
Original line number Diff line number Diff line
@@ -230,6 +230,38 @@ static int gve_user_reset(struct net_device *netdev, u32 *flags) 
	return -EOPNOTSUPP;

}



static int gve_get_tunable(struct net_device *netdev,

			   const struct ethtool_tunable *etuna, void *value)

{

	struct gve_priv *priv = netdev_priv(netdev);



	switch (etuna->id) {

	case ETHTOOL_RX_COPYBREAK:

		*(u32 *)value = priv->rx_copybreak;

		return 0;

	default:

		return -EOPNOTSUPP;

	}

}



static int gve_set_tunable(struct net_device *netdev,

			   const struct ethtool_tunable *etuna, const void *value)

{

	struct gve_priv *priv = netdev_priv(netdev);

	u32 len;



	switch (etuna->id) {

	case ETHTOOL_RX_COPYBREAK:

		len = *(u32 *)value;

		if (len > PAGE_SIZE / 2)

			return -EINVAL;

		priv->rx_copybreak = len;

		return 0;

	default:

		return -EOPNOTSUPP;

	}

}



const struct ethtool_ops gve_ethtool_ops = {

	.get_drvinfo = gve_get_drvinfo,

	.get_strings = gve_get_strings,
@@ -242,4 +274,6 @@ const struct ethtool_ops gve_ethtool_ops = { 
	.get_link = ethtool_op_get_link,

	.get_ringparam = gve_get_ringparam,

	.reset = gve_user_reset,

	.get_tunable = gve_get_tunable,

	.set_tunable = gve_set_tunable,

};