vxlan: Update vxlan fdb 'used' field after each usage

Fix some instances where vxlan fdb 'used' field is not updated after the entry
is used.

v2: rename vxlan_find_mac() as __vxlan_find_mac() and create a new vxlan_find_mac()
that also updates ->used field.

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index ba81f3c..3b1d2ee 100644 (file)
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -301,7 +301,7 @@ static inline struct hlist_head *vxlan_fdb_head(struct vxlan_dev *vxlan,
 }
 
 /* Look up Ethernet address in forwarding table */
-static struct vxlan_fdb *vxlan_find_mac(struct vxlan_dev *vxlan,
+static struct vxlan_fdb *__vxlan_find_mac(struct vxlan_dev *vxlan,
                                        const u8 *mac)
 
 {
@@ -316,6 +316,18 @@ static struct vxlan_fdb *vxlan_find_mac(struct vxlan_dev *vxlan,
        return NULL;
 }
 
+static struct vxlan_fdb *vxlan_find_mac(struct vxlan_dev *vxlan,
+                                       const u8 *mac)
+{
+       struct vxlan_fdb *f;
+
+       f = __vxlan_find_mac(vxlan, mac);
+       if (f)
+               f->used = jiffies;
+
+       return f;
+}
+
 /* Add/update destinations for multicast */
 static int vxlan_fdb_append(struct vxlan_fdb *f,
                            __be32 ip, __be16 port, __u32 vni, __u32 ifindex)
@@ -353,7 +365,7 @@ static int vxlan_fdb_create(struct vxlan_dev *vxlan,
        struct vxlan_fdb *f;
        int notify = 0;
 
-       f = vxlan_find_mac(vxlan, mac);
+       f = __vxlan_find_mac(vxlan, mac);
        if (f) {
                if (flags & NLM_F_EXCL) {
                        netdev_dbg(vxlan->dev,
@@ -563,7 +575,6 @@ static void vxlan_snoop(struct net_device *dev,
 
        f = vxlan_find_mac(vxlan, src_mac);
        if (likely(f)) {
-               f->used = jiffies;
                if (likely(f->remote.remote_ip == src_ip))
                        return;