diff options
Diffstat (limited to 'drivers/net/vxlan.c')
| -rw-r--r-- | drivers/net/vxlan.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 3b1d2ee7156..577a069a6dd 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -571,7 +571,6 @@ static void vxlan_snoop(struct net_device *dev, { struct vxlan_dev *vxlan = netdev_priv(dev); struct vxlan_fdb *f; - int err; f = vxlan_find_mac(vxlan, src_mac); if (likely(f)) { @@ -588,12 +587,15 @@ static void vxlan_snoop(struct net_device *dev, } else { /* learned new entry */ spin_lock(&vxlan->hash_lock); - err = vxlan_fdb_create(vxlan, src_mac, src_ip, - NUD_REACHABLE, - NLM_F_EXCL|NLM_F_CREATE, - vxlan->dst_port, - vxlan->default_dst.remote_vni, - 0, NTF_SELF); + + /* close off race between vxlan_flush and incoming packets */ + if (netif_running(dev)) + vxlan_fdb_create(vxlan, src_mac, src_ip, + NUD_REACHABLE, + NLM_F_EXCL|NLM_F_CREATE, + vxlan->dst_port, + vxlan->default_dst.remote_vni, + 0, NTF_SELF); spin_unlock(&vxlan->hash_lock); } } |