netdev: introduce dev_get_stats()

In order for the network device ops get_stats call to be immutable, the handling
of the default internal network device stats block has to be changed. Add a new
helper function which replaces the old use of internal_get_stats.

Note: change return code to make it clear that the caller should not
go changing the returned statistics.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c
index f9b12664f9fb..454b6532e409 100644
--- a/drivers/parisc/led.c
+++ b/drivers/parisc/led.c
@@ -360,13 +360,13 @@ static __inline__ int led_get_net_activity(void)
         read_lock(&dev_base_lock);
         rcu_read_lock();
         for_each_netdev(&init_net, dev) {
-            struct net_device_stats *stats;
+            const struct net_device_stats *stats;
             struct in_device *in_dev = __in_dev_get_rcu(dev);
             if (!in_dev || !in_dev->ifa_list)
                 continue;
             if (ipv4_is_loopback(in_dev->ifa_list->ifa_local))
                 continue;
-            stats = dev->get_stats(dev);
+            stats = dev_get_stats(dev);
             rx_total += stats->rx_packets;
             tx_total += stats->tx_packets;
         }