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authorJiri Pirko <jiri@resnulli.us>2012-10-14 04:30:56 +0000
committerDavid S. Miller <davem@davemloft.net>2012-10-16 14:41:46 -0400
commit55462cf30ad9768fff6a6d36db21879146a39bdf (patch)
treef306def961d7f9ca6cc835c5133c592973f91a0c
parent73b7656ce4e09eb137ee6f845a9e11a7f132df1c (diff)
vlan: fix bond/team enslave of vlan challenged slave/port
In vlan_uses_dev() check for number of vlan devs rather than existence of vlan_info. The reason is that vlan id 0 is there without appropriate vlan dev on it by default which prevented from enslaving vlan challenged dev. Reported-by: Jon Stanley <jstanley@rmrf.net> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/bonding/bond_main.c2
-rw-r--r--net/8021q/vlan_core.c9
2 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index b721902bb6b4..b2530b002125 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1519,7 +1519,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
/* no need to lock since we're protected by rtnl_lock */
if (slave_dev->features & NETIF_F_VLAN_CHALLENGED) {
pr_debug("%s: NETIF_F_VLAN_CHALLENGED\n", slave_dev->name);
- if (bond_vlan_used(bond)) {
+ if (vlan_uses_dev(bond_dev)) {
pr_err("%s: Error: cannot enslave VLAN challenged slave %s on VLAN enabled bond %s\n",
bond_dev->name, slave_dev->name, bond_dev->name);
return -EPERM;
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index fbbf1fa00940..65e06abe023f 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -366,6 +366,13 @@ EXPORT_SYMBOL(vlan_vids_del_by_dev);
bool vlan_uses_dev(const struct net_device *dev)
{
- return rtnl_dereference(dev->vlan_info) ? true : false;
+ struct vlan_info *vlan_info;
+
+ ASSERT_RTNL();
+
+ vlan_info = rtnl_dereference(dev->vlan_info);
+ if (!vlan_info)
+ return false;
+ return vlan_info->grp.nr_vlan_devs ? true : false;
}
EXPORT_SYMBOL(vlan_uses_dev);