gianfar: Implement the SIOCGHWTSTAMP ioctl

This is untested.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index b14d7904a075e69779e4a2847dee1bedaba791d2..365342d293e82492f396551cdf1dad5af702e817 100644 (file)
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -795,8 +795,7 @@ err_grp_init:
        return err;
 }
 
-static int gfar_hwtstamp_ioctl(struct net_device *netdev,
-                              struct ifreq *ifr, int cmd)
+static int gfar_hwtstamp_set(struct net_device *netdev, struct ifreq *ifr)
 {
        struct hwtstamp_config config;
        struct gfar_private *priv = netdev_priv(netdev);
@@ -845,7 +844,20 @@ static int gfar_hwtstamp_ioctl(struct net_device *netdev,
                -EFAULT : 0;
 }
 
-/* Ioctl MII Interface */
+static int gfar_hwtstamp_get(struct net_device *netdev, struct ifreq *ifr)
+{
+       struct hwtstamp_config config;
+       struct gfar_private *priv = netdev_priv(netdev);
+
+       config.flags = 0;
+       config.tx_type = priv->hwts_tx_en ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;
+       config.rx_filter = (priv->hwts_rx_en ?
+                           HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE);
+
+       return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
+               -EFAULT : 0;
+}
+
 static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 {
        struct gfar_private *priv = netdev_priv(dev);
@@ -854,7 +866,9 @@ static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
                return -EINVAL;
 
        if (cmd == SIOCSHWTSTAMP)
-               return gfar_hwtstamp_ioctl(dev, rq, cmd);
+               return gfar_hwtstamp_set(dev, rq);
+       if (cmd == SIOCGHWTSTAMP)
+               return gfar_hwtstamp_get(dev, rq);
 
        if (!priv->phydev)
                return -ENODEV;