diff options
Diffstat (limited to 'drivers/net/vxlan.c')
-rw-r--r-- | drivers/net/vxlan.c | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 249e01c5600c..ea203c1aaa24 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; @@ -1390,7 +1405,7 @@ __be16 vxlan_src_port(__u16 port_min, __u16 port_max, struct sk_buff *skb) unsigned int range = (port_max - port_min) + 1; u32 hash; - hash = skb_get_rxhash(skb); + hash = skb_get_hash(skb); if (!hash) hash = jhash(skb->data, 2 * ETH_ALEN, (__force u32) skb->protocol); @@ -1935,7 +1950,6 @@ static void vxlan_uninit(struct net_device *dev) /* Start ageing timer and join group when device is brought up */ static int vxlan_open(struct net_device *dev) { - struct vxlan_net *vn = net_generic(dev_net(dev), vxlan_net_id); struct vxlan_dev *vxlan = netdev_priv(dev); struct vxlan_sock *vs = vxlan->vn_sock; @@ -1943,8 +1957,7 @@ static int vxlan_open(struct net_device *dev) if (!vs) return -ENOTCONN; - if (vxlan_addr_multicast(&vxlan->default_dst.remote_ip) && - vxlan_group_used(vn, &vxlan->default_dst.remote_ip)) { + if (vxlan_addr_multicast(&vxlan->default_dst.remote_ip)) { vxlan_sock_hold(vs); dev_hold(dev); queue_work(vxlan_wq, &vxlan->igmp_join); @@ -1983,7 +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); |