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

[ Upstream commit 014be2c8eac3381e202f684c1f35ae184a8b152b ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 7cee7a3068ec11ae9a7f91efa612748dfdd0463e..a4fe5f1fe49be61eda3621a7e6ec622d0c442804 100644 (file)
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -285,7 +285,7 @@ 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)
 
 {
@@ -300,6 +300,18 @@ 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 new entry to forwarding table -- assumes lock held */
 static int vxlan_fdb_create(struct vxlan_dev *vxlan,
                            const u8 *mac, __be32 ip,
@@ -308,7 +320,7 @@ 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,
@@ -453,7 +465,6 @@ 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_ip == src_ip))
                        return;