From 28172739f0a276eb8d6ca917b3974c2edb036da3 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 7 Jul 2010 14:58:56 -0700 Subject: net: fix 64 bit counters on 32 bit arches There is a small possibility that a reader gets incorrect values on 32 bit arches. SNMP applications could catch incorrect counters when a 32bit high part is changed by another stats consumer/provider. One way to solve this is to add a rtnl_link_stats64 param to all ndo_get_stats64() methods, and also add such a parameter to dev_get_stats(). Rule is that we are not allowed to use dev->stats64 as a temporary storage for 64bit stats, but a caller provided area (usually on stack) Old drivers (only providing get_stats() method) need no changes. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- drivers/net/macvlan.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/net/macvlan.c') diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index e6d626e78515..6112f1498940 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -431,12 +431,12 @@ static void macvlan_uninit(struct net_device *dev) free_percpu(vlan->rx_stats); } -static struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev) +static struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev, + struct rtnl_link_stats64 *stats) { - struct rtnl_link_stats64 *stats = &dev->stats64; struct macvlan_dev *vlan = netdev_priv(dev); - dev_txq_stats_fold(dev, &dev->stats); + dev_txq_stats_fold(dev, (struct net_device_stats *)stats); if (vlan->rx_stats) { struct macvlan_rx_stats *p, accum = {0}; -- cgit v1.2.3