path: root/net/8021q/vlanproc.c
diff options
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 /net/8021q/vlanproc.c
parent217d32dc5f299c483ca0d3c8cc6811c72c0339c4 (diff)
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 'net/8021q/vlanproc.c')
1 files changed, 2 insertions, 1 deletions
diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
index df56f5ce887c..80e280f56686 100644
--- a/net/8021q/vlanproc.c
+++ b/net/8021q/vlanproc.c
@@ -278,6 +278,7 @@ static int vlandev_seq_show(struct seq_file *seq, void *offset)
struct net_device *vlandev = (struct net_device *) seq->private;
const struct vlan_dev_info *dev_info = vlan_dev_info(vlandev);
+ struct rtnl_link_stats64 temp;
const struct rtnl_link_stats64 *stats;
static const char fmt[] = "%30s %12lu\n";
static const char fmt64[] = "%30s %12llu\n";
@@ -286,7 +287,7 @@ static int vlandev_seq_show(struct seq_file *seq, void *offset)
if (!is_vlan_dev(vlandev))
return 0;
- stats = dev_get_stats(vlandev);
+ stats = dev_get_stats(vlandev, &temp);
"%s VID: %d REORDER_HDR: %i dev->priv_flags: %hx\n",
vlandev->name, dev_info->vlan_id,

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