dummy: add support for ethtool get_drvinfo

The command 'ethtool -i' is useful to find details
about the interface like the device driver being used.
This was missing for dummy driver.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 2 deletions

diff --git a/drivers/net/dummy.c b/drivers/net/dummy.c
index ff435fbd1ad0..413ca4f73997 100644
--- a/drivers/net/dummy.c
+++ b/drivers/net/dummy.c
@@ -38,6 +38,9 @@
 #include <net/rtnetlink.h>
 #include <linux/u64_stats_sync.h>
 
+#define DRV_NAME        "dummy"
+#define DRV_VERSION     "1.0"
+
 static int numdummies = 1;
 
 /* fake multicast ability */
@@ -120,12 +123,24 @@ static const struct net_device_ops dummy_netdev_ops = {
         .ndo_change_carrier     = dummy_change_carrier,
 };
 
+static void dummy_get_drvinfo(struct net_device *dev,
+                              struct ethtool_drvinfo *info)
+{
+        strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
+        strlcpy(info->version, DRV_VERSION, sizeof(info->version));
+}
+
+static const struct ethtool_ops dummy_ethtool_ops = {
+        .get_drvinfo            = dummy_get_drvinfo,
+};
+
 static void dummy_setup(struct net_device *dev)
 {
         ether_setup(dev);
 
         /* Initialize the device structure. */
         dev->netdev_ops = &dummy_netdev_ops;
+        dev->ethtool_ops = &dummy_ethtool_ops;
         dev->destructor = free_netdev;
 
         /* Fill in device structure with ethernet-generic values. */
@@ -150,7 +165,7 @@ static int dummy_validate(struct nlattr *tb[], struct nlattr *data[])
 }
 
 static struct rtnl_link_ops dummy_link_ops __read_mostly = {
-        .kind           = "dummy",
+        .kind           = DRV_NAME,
         .setup          = dummy_setup,
         .validate       = dummy_validate,
 };
@@ -209,4 +224,4 @@ static void __exit dummy_cleanup_module(void)
 module_init(dummy_init_module);
 module_exit(dummy_cleanup_module);
 MODULE_LICENSE("GPL");
-MODULE_ALIAS_RTNL_LINK("dummy");
+MODULE_ALIAS_RTNL_LINK(DRV_NAME);