From: Yegor Yefremov Date: Mon, 28 Nov 2016 09:47:52 +0000 (+0100) Subject: cpsw: ethtool: add support for nway reset X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6bb10c2bc6576d80d2e933a58b4210101e56c30c;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git 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 Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index df87bfff04f8..caec6acd04d3 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -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,