summaryrefslogtreecommitdiffstats
path: root/drivers/net/sfc/efx.c
diff options
context:
space:
mode:
authorEric Dumazet <eric.dumazet@gmail.com>2010-07-07 14:58:56 -0700
committerDavid S. Miller <davem@davemloft.net>2010-07-07 14:58:56 -0700
commit28172739f0a276eb8d6ca917b3974c2edb036da3 (patch)
treeb1dc00cfa20c209992e247c6f73601f609f9ca3b /drivers/net/sfc/efx.c
parent217d32dc5f299c483ca0d3c8cc6811c72c0339c4 (diff)
downloadop-kernel-dev-28172739f0a276eb8d6ca917b3974c2edb036da3.zip
op-kernel-dev-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/sfc/efx.c')
-rw-r--r--drivers/net/sfc/efx.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 35b3f29..ba674c5 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -1533,11 +1533,10 @@ static int efx_net_stop(struct net_device *net_dev)
}
/* Context: process, dev_base_lock or RTNL held, non-blocking. */
-static struct rtnl_link_stats64 *efx_net_stats(struct net_device *net_dev)
+static struct rtnl_link_stats64 *efx_net_stats(struct net_device *net_dev, struct rtnl_link_stats64 *stats)
{
struct efx_nic *efx = netdev_priv(net_dev);
struct efx_mac_stats *mac_stats = &efx->mac_stats;
- struct rtnl_link_stats64 *stats = &net_dev->stats64;
spin_lock_bh(&efx->stats_lock);
efx->type->update_stats(efx);
OpenPOWER on IntegriCloud