diff options
Diffstat (limited to 'drivers/net/macvlan.c')
| -rw-r--r-- | drivers/net/macvlan.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index 958df383068a..a96955597755 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -45,10 +45,9 @@ struct macvlan_port { struct sk_buff_head bc_queue; struct work_struct bc_work; bool passthru; + int count; }; -#define MACVLAN_PORT_IS_EMPTY(port) list_empty(&port->vlans) - struct macvlan_skb_cb { const struct macvlan_dev *src; }; @@ -646,6 +645,7 @@ static int macvlan_init(struct net_device *dev) (lowerdev->state & MACVLAN_STATE_MASK); dev->features = lowerdev->features & MACVLAN_FEATURES; dev->features |= ALWAYS_ON_FEATURES; + dev->vlan_features = lowerdev->vlan_features & MACVLAN_FEATURES; dev->gso_max_size = lowerdev->gso_max_size; dev->iflink = lowerdev->ifindex; dev->hard_header_len = lowerdev->hard_header_len; @@ -666,7 +666,8 @@ static void macvlan_uninit(struct net_device *dev) free_percpu(vlan->pcpu_stats); - if (MACVLAN_PORT_IS_EMPTY(port)) + port->count -= 1; + if (!port->count) macvlan_port_destroy(port->dev); } @@ -738,7 +739,10 @@ static int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], struct macvlan_dev *vlan = netdev_priv(dev); int err = -EINVAL; - if (!vlan->port->passthru) + /* Support unicast filter only on passthru devices. + * Multicast filter should be allowed on all devices. + */ + if (!vlan->port->passthru && is_unicast_ether_addr(addr)) return -EOPNOTSUPP; if (flags & NLM_F_REPLACE) @@ -759,7 +763,10 @@ static int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], struct macvlan_dev *vlan = netdev_priv(dev); int err = -EINVAL; - if (!vlan->port->passthru) + /* Support unicast filter only on passthru devices. + * Multicast filter should be allowed on all devices. + */ + if (!vlan->port->passthru && is_unicast_ether_addr(addr)) return -EOPNOTSUPP; if (is_unicast_ether_addr(addr)) @@ -1019,12 +1026,13 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev, vlan->flags = nla_get_u16(data[IFLA_MACVLAN_FLAGS]); if (vlan->mode == MACVLAN_MODE_PASSTHRU) { - if (!MACVLAN_PORT_IS_EMPTY(port)) + if (port->count) return -EINVAL; port->passthru = true; eth_hw_addr_inherit(dev, lowerdev); } + port->count += 1; err = register_netdevice(dev); if (err < 0) goto destroy_port; @@ -1042,7 +1050,8 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev, unregister_netdev: unregister_netdevice(dev); destroy_port: - if (MACVLAN_PORT_IS_EMPTY(port)) + port->count -= 1; + if (!port->count) macvlan_port_destroy(lowerdev); return err; |