diff options
Diffstat (limited to 'drivers/net/vxlan.c')
| -rw-r--r-- | drivers/net/vxlan.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 43dc9ee4758f..58f6a0c02b17 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -916,17 +916,32 @@ static bool vxlan_snoop(struct net_device *dev, } /* See if multicast group is already in use by other ID */ -static bool vxlan_group_used(struct vxlan_net *vn, union vxlan_addr *remote_ip) +static bool vxlan_group_used(struct vxlan_net *vn, struct vxlan_dev *dev) { struct vxlan_dev *vxlan; + /* The vxlan_sock is only used by dev, leaving group has + * no effect on other vxlan devices. + */ + if (atomic_read(&dev->vn_sock->refcnt) == 1) + return false; + list_for_each_entry(vxlan, &vn->vxlan_list, next) { - if (!netif_running(vxlan->dev)) + if (!netif_running(vxlan->dev) || vxlan == dev) continue; - if (vxlan_addr_equal(&vxlan->default_dst.remote_ip, - remote_ip)) - return true; + if (vxlan->vn_sock != dev->vn_sock) + continue; + + if (!vxlan_addr_equal(&vxlan->default_dst.remote_ip, + &dev->default_dst.remote_ip)) + continue; + + if (vxlan->default_dst.remote_ifindex != + dev->default_dst.remote_ifindex) + continue; + + return true; } return false; @@ -1981,7 +1996,7 @@ static int vxlan_stop(struct net_device *dev) struct vxlan_sock *vs = vxlan->vn_sock; if (vs && vxlan_addr_multicast(&vxlan->default_dst.remote_ip) && - ! vxlan_group_used(vn, &vxlan->default_dst.remote_ip)) { + !vxlan_group_used(vn, vxlan)) { vxlan_sock_hold(vs); dev_hold(dev); queue_work(vxlan_wq, &vxlan->igmp_leave); |