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/parisc/led.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/parisc') diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c index 188bc84..18dff43 100644 --- a/drivers/parisc/led.c +++ b/drivers/parisc/led.c @@ -355,12 +355,13 @@ static __inline__ int led_get_net_activity(void) rcu_read_lock(); for_each_netdev_rcu(&init_net, dev) { const struct net_device_stats *stats; + struct rtnl_link_stats64 temp; 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, &temp); rx_total += stats->rx_packets; tx_total += stats->tx_packets; } -- cgit v1.1