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-rw-r--r--net/core/ethtool.c48
1 files changed, 45 insertions, 3 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 6d6d7d25caaa..a723b1321691 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -17,6 +17,8 @@
#include <linux/errno.h>
#include <linux/ethtool.h>
#include <linux/netdevice.h>
+#include <linux/net_tstamp.h>
+#include <linux/phy.h>
#include <linux/bitops.h>
#include <linux/uaccess.h>
#include <linux/vmalloc.h>
@@ -1278,6 +1280,40 @@ out:
return ret;
}
+static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
+{
+ int err = 0;
+ struct ethtool_ts_info info;
+ const struct ethtool_ops *ops = dev->ethtool_ops;
+ struct phy_device *phydev = dev->phydev;
+
+ memset(&info, 0, sizeof(info));
+ info.cmd = ETHTOOL_GET_TS_INFO;
+
+ if (phydev && phydev->drv && phydev->drv->ts_info) {
+
+ err = phydev->drv->ts_info(phydev, &info);
+
+ } else if (dev->ethtool_ops && dev->ethtool_ops->get_ts_info) {
+
+ err = ops->get_ts_info(dev, &info);
+
+ } else {
+ info.so_timestamping =
+ SOF_TIMESTAMPING_RX_SOFTWARE |
+ SOF_TIMESTAMPING_SOFTWARE;
+ info.phc_index = -1;
+ }
+
+ if (err)
+ return err;
+
+ if (copy_to_user(useraddr, &info, sizeof(info)))
+ err = -EFAULT;
+
+ return err;
+}
+
/* The main entry point in this file. Called from net/core/dev.c */
int dev_ethtool(struct net *net, struct ifreq *ifr)
@@ -1295,11 +1331,13 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
return -EFAULT;
if (!dev->ethtool_ops) {
- /* ETHTOOL_GDRVINFO does not require any driver support.
- * It is also unprivileged and does not change anything,
- * so we can take a shortcut to it. */
+ /* A few commands do not require any driver support,
+ * are unprivileged, and do not change anything, so we
+ * can take a shortcut to them. */
if (ethcmd == ETHTOOL_GDRVINFO)
return ethtool_get_drvinfo(dev, useraddr);
+ else if (ethcmd == ETHTOOL_GET_TS_INFO)
+ return ethtool_get_ts_info(dev, useraddr);
else
return -EOPNOTSUPP;
}
@@ -1330,6 +1368,7 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
case ETHTOOL_GRXCLSRULE:
case ETHTOOL_GRXCLSRLALL:
case ETHTOOL_GFEATURES:
+ case ETHTOOL_GET_TS_INFO:
break;
default:
if (!capable(CAP_NET_ADMIN))
@@ -1496,6 +1535,9 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
case ETHTOOL_GET_DUMP_DATA:
rc = ethtool_get_dump_data(dev, useraddr);
break;
+ case ETHTOOL_GET_TS_INFO:
+ rc = ethtool_get_ts_info(dev, useraddr);
+ break;
default:
rc = -EOPNOTSUPP;
}