net: Document that dev_get_stats() returns the given pointer

Document that dev_get_stats() returns the same stats pointer it was
given.  Remove const qualification from the returned pointer since the
caller may do what it likes with that structure.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 8 insertions, 8 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 17e95e37aed9..c4fedf000541 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2130,8 +2130,8 @@ extern void		netdev_features_change(struct net_device *dev);
 /* Load a device via the kmod */
 extern void             dev_load(struct net *net, const char *name);
 extern void             dev_mcast_init(void);
-extern const struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
-                                                     struct rtnl_link_stats64 *storage);
+extern struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
+                                               struct rtnl_link_stats64 *storage);
 extern void             dev_txq_stats_fold(const struct net_device *dev,
                                            struct rtnl_link_stats64 *stats);
 
diff --git a/net/core/dev.c b/net/core/dev.c
index 79ee26ef5095..e2b9fa2c917e 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5323,13 +5323,13 @@ static void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64,
  *      @dev: device to get statistics from
  *      @storage: place to store stats
  *
- *      Get network statistics from device. The device driver may provide
- *      its own method by setting dev->netdev_ops->get_stats64 or
- *      dev->netdev_ops->get_stats; otherwise the internal statistics
- *      structure is used.
+ *      Get network statistics from device. Return @storage.
+ *      The device driver may provide its own method by setting
+ *      dev->netdev_ops->get_stats64 or dev->netdev_ops->get_stats;
+ *      otherwise the internal statistics structure is used.
  */
-const struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
-                                              struct rtnl_link_stats64 *storage)
+struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
+                                        struct rtnl_link_stats64 *storage)
 {
         const struct net_device_ops *ops = dev->netdev_ops;