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From d6bd25b692378ec17bdb1023d398c03c45829947 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Thu, 1 Oct 2015 20:27:19 +0100
Subject: [PATCH 724/744] phylink: add ethtool nway_reset support
Add ethtool nway_reset support to phylink, to allow userspace to
request a re-negotiation of the link.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
drivers/net/phy/phylink.c | 14 ++++++++++++++
include/linux/phylink.h | 1 +
2 files changed, 15 insertions(+)
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -687,6 +687,20 @@ int phylink_ethtool_set_settings(struct
}
EXPORT_SYMBOL_GPL(phylink_ethtool_set_settings);
+int phylink_ethtool_nway_reset(struct phylink *pl)
+{
+ int ret = 0;
+
+ mutex_lock(&pl->config_mutex);
+ if (pl->phydev)
+ ret = genphy_restart_aneg(pl->phydev);
+ phylink_mac_an_restart(pl);
+ mutex_unlock(&pl->config_mutex);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(phylink_ethtool_nway_reset);
+
/* This emulates MII registers for a fixed-mode phy operating as per the
* passed in state. "aneg" defines if we report negotiation is possible.
*
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h
@@ -65,6 +65,7 @@ void phylink_stop(struct phylink *);
int phylink_ethtool_get_settings(struct phylink *, struct ethtool_cmd *);
int phylink_ethtool_set_settings(struct phylink *, struct ethtool_cmd *);
+int phylink_ethtool_nway_reset(struct phylink *);
int phylink_mii_ioctl(struct phylink *, struct ifreq *, int);
void phylink_set_link_port(struct phylink *pl, u32 support, u8 port);
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