[PATCH net v2 1/2] net: core: add member wol_enabled to struct net_device

[Heiner Kallweit]

Add flag wol_enabled to struct net_device indicating whether
Wake-on-LAN is enabled. As first user phy_suspend() will use it to
decide whether PHY can be suspended or not.

Fixes: f1e911d5d0df ("r8169: add basic phylib support")
Fixes: e8cfd9d6c772 ("net: phy: call state machine synchronously in phy_stop")
Signed-off-by: Heiner Kallweit <hkallwe...@gmail.com>
---
 include/linux/netdevice.h | 3 +++
 net/core/ethtool.c        | 9 ++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 1cbbf77a6..f5f1f1450 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1756,6 +1756,8 @@ enum netdev_priv_flags {
  *                     switch driver and used to set the phys state of the
  *                     switch port.
  *
+ *     @wol_enabled:   Wake-on-LAN is enabled
+ *
  *     FIXME: cleanup struct net_device such that network protocol info
  *     moves out.
  */
@@ -2039,6 +2041,7 @@ struct net_device {
        struct lock_class_key   *qdisc_tx_busylock;
        struct lock_class_key   *qdisc_running_key;
        bool                    proto_down;
+       unsigned                wol_enabled:1;
 };
 #define to_net_dev(d) container_of(d, struct net_device, dev)
 
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 9d4e56d97..86f765d42 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -1395,6 +1395,7 @@ static int ethtool_get_wol(struct net_device *dev, char 
__user *useraddr)
 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
 {
        struct ethtool_wolinfo wol;
+       int ret;
 
        if (!dev->ethtool_ops->set_wol)
                return -EOPNOTSUPP;
@@ -1402,7 +1403,13 @@ static int ethtool_set_wol(struct net_device *dev, char 
__user *useraddr)
        if (copy_from_user(&wol, useraddr, sizeof(wol)))
                return -EFAULT;
 
-       return dev->ethtool_ops->set_wol(dev, &wol);
+       ret = dev->ethtool_ops->set_wol(dev, &wol);
+       if (ret)
+               return ret;
+
+       dev->wol_enabled = !!wol.wolopts;
+
+       return 0;
 }
 
 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
-- 
2.19.0