[PATCH net-next v8 01/15] phylink: Add phylink_mac_interrupt

[Birger Koblitz <mail@birger-koblitz.de>]

Add the phylink_mac_interrupt() function to phylink, which
passes a link-change interrupt received by the MAC to phylib.
This function can be used by drivers which want to avoid
polling the PHY and instead rely on an interrupt received by
the MAC when a link-change happens.

Signed-off-by: Birger Koblitz <mail@birger-koblitz.de>
---
 drivers/net/phy/phylink.c | 16 ++++++++++++++++
 include/linux/phylink.h   |  1 +
 2 files changed, 17 insertions(+)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 087ac63f9193d790d20bf5739965669a7adf654c..2ba1d76872a235b0d75722e059d7fd5e35d3aebe 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -1612,6 +1612,22 @@ static bool phylink_link_is_up(struct phylink *pl)
 	return pl->netdev ? netif_carrier_ok(pl->netdev) : pl->old_link_state;
 }
 
+/**
+ * phylink_mac_interrupt() - wrapper for phy_mac_interrupt()
+ * @pl: a pointer to a &struct phylink returned from phylink_create()
+ *
+ * Passes a link-change interrupt received by the MAC to phylib.
+ */
+void phylink_mac_interrupt(struct phylink *pl)
+{
+	struct phy_device *phy;
+
+	phy = pl->phydev;
+	if (phy)
+		phy_mac_interrupt(phy);
+}
+EXPORT_SYMBOL_GPL(phylink_mac_interrupt);
+
 static void phylink_resolve(struct work_struct *w)
 {
 	struct phylink *pl = container_of(w, struct phylink, resolve);
diff --git a/include/linux/phylink.h b/include/linux/phylink.h
index 2bc0db3d52ac8d51e1180e197e5af9ef61878e06..21f960a827b6fa7786f9e1051942988270f12323 100644
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h
@@ -768,6 +768,7 @@ int phylink_ethtool_set_eee(struct phylink *link, struct ethtool_keee *eee);
 int phylink_mii_ioctl(struct phylink *, struct ifreq *, int);
 int phylink_speed_down(struct phylink *pl, bool sync);
 int phylink_speed_up(struct phylink *pl);
+void phylink_mac_interrupt(struct phylink *pl);
 
 #define phylink_zero(bm) \
 	bitmap_zero(bm, __ETHTOOL_LINK_MODE_MASK_NBITS)

-- 
2.47.3