diff options
Diffstat (limited to 'net/bridge/br_if.c')
| -rw-r--r-- | net/bridge/br_if.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c index 142ebac1417..4a9f5273265 100644 --- a/net/bridge/br_if.c +++ b/net/bridge/br_if.c @@ -377,12 +377,16 @@ int br_add_if(struct net_bridge *br, struct net_device *dev) struct net_bridge_port *p; int err = 0; - if (dev->flags & IFF_LOOPBACK || dev->type != ARPHRD_ETHER) + /* Don't allow bridging non-ethernet like devices */ + if ((dev->flags & IFF_LOOPBACK) || + dev->type != ARPHRD_ETHER || dev->addr_len != ETH_ALEN) return -EINVAL; + /* No bridging of bridges */ if (dev->netdev_ops->ndo_start_xmit == br_dev_xmit) return -ELOOP; + /* Device is already being bridged */ if (dev->br_port != NULL) return -EBUSY; @@ -432,6 +436,7 @@ err2: br_fdb_delete_by_port(br, p, 1); err1: kobject_put(&p->kobj); + p = NULL; /* kobject_put frees */ err0: dev_set_promiscuity(dev, -1); put_back: |