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authorDavid S. Miller <davem@davemloft.net>2009-11-06 00:55:55 -0800
committerDavid S. Miller <davem@davemloft.net>2009-11-06 00:55:55 -0800
commit230f9bb701d37ae9b48e96456689452978f5c439 (patch)
tree9d2690917533bbb4498c8c9df838de2d38360912 /net/bridge/br_if.c
parent000ba2e43f33901859fd794bb33c885909d53b3b (diff)
parent887e671f324d9898aaedb29a6ece6c853c394067 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/usb/cdc_ether.c All CDC ethernet devices of type USB_CLASS_COMM need to use '&mbm_info'. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_if.c')
-rw-r--r--net/bridge/br_if.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 2117e5ba24c..a6f74b2b957 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;