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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-07-07 14:58:56 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-07-07 14:58:56 -0700 |
| commit | 28172739f0a276eb8d6ca917b3974c2edb036da3 (patch) | |
| tree | b1dc00cfa20c209992e247c6f73601f609f9ca3b /drivers/net/macvlan.c | |
| parent | 217d32dc5f299c483ca0d3c8cc6811c72c0339c4 (diff) | |
| download | linux-28172739f0a276eb8d6ca917b3974c2edb036da3.tar.gz | |
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 <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/macvlan.c')
| -rw-r--r-- | drivers/net/macvlan.c | 6 |
1 files changed, 3 insertions, 3 deletions
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}; |