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cpsw: ethtool: add support for nway reset 

This patch adds support for ethtool's '-r' command. Restarting
N-WAY negotiation can be useful to activate newly changed EEE
settings etc.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yegor Yefremov 2016-11-28 10:47:52 +01:00 committed by David S. Miller
parent 6d5274eba4
commit 6bb10c2bc6
1 changed files with 13 additions and 0 deletions
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13
drivers/net/ethernet/ti/cpsw.c
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@ -2261,6 +2261,18 @@ static int cpsw_set_eee(struct net_device *ndev, struct ethtool_eee *edata)
return -EOPNOTSUPP;
}
static int cpsw_nway_reset(struct net_device *ndev)
{
struct cpsw_priv *priv = netdev_priv(ndev);
struct cpsw_common *cpsw = priv->cpsw;
int slave_no = cpsw_slave_index(cpsw, priv);
if (cpsw->slaves[slave_no].phy)
return genphy_restart_aneg(cpsw->slaves[slave_no].phy);
else
return -EOPNOTSUPP;
}
static const struct ethtool_ops cpsw_ethtool_ops = {
.get_drvinfo = cpsw_get_drvinfo,
.get_msglevel = cpsw_get_msglevel,
@ -2286,6 +2298,7 @@ static const struct ethtool_ops cpsw_ethtool_ops = {
.set_link_ksettings = cpsw_set_link_ksettings,
.get_eee = cpsw_get_eee,
.set_eee = cpsw_set_eee,
.nway_reset = cpsw_nway_reset,
};
static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_common *cpsw,