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>
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 6f8e077..790dd20 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -551,7 +551,7 @@
}
static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
- struct net_device_stats *b)
+ const struct net_device_stats *b)
{
a->rx_packets = b->rx_packets;
a->tx_packets = b->tx_packets;
@@ -609,7 +609,7 @@
struct netdev_queue *txq;
struct ifinfomsg *ifm;
struct nlmsghdr *nlh;
- struct net_device_stats *stats;
+ const struct net_device_stats *stats;
struct nlattr *attr;
nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
@@ -666,7 +666,7 @@
if (attr == NULL)
goto nla_put_failure;
- stats = dev->get_stats(dev);
+ stats = dev_get_stats(dev);
copy_rtnl_link_stats(nla_data(attr), stats);
if (dev->rtnl_link_ops) {