From cec9c133631039f82e4a5ff3bf47b3eba14ff1aa Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Wed, 20 Jul 2011 04:54:05 +0000 Subject: vlan: introduce __vlan_find_dev_deep() Since vlan_group_get_device and vlan_group is not going to be accessible from device drivers, introduce function which substitutes it. Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- net/8021q/vlan_core.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'net/8021q/vlan_core.c') diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c index fcc684678af6..5940366fac48 100644 --- a/net/8021q/vlan_core.c +++ b/net/8021q/vlan_core.c @@ -63,6 +63,27 @@ bool vlan_do_receive(struct sk_buff **skbp) return true; } +/* Must be invoked with rcu_read_lock or with RTNL. */ +struct net_device *__vlan_find_dev_deep(struct net_device *real_dev, + u16 vlan_id) +{ + struct vlan_group *grp = rcu_dereference_rtnl(real_dev->vlgrp); + + if (grp) { + return vlan_group_get_device(grp, vlan_id); + } else { + /* + * Bonding slaves do not have grp assigned to themselves. + * Grp is assigned to bonding master instead. + */ + if (netif_is_bond_slave(real_dev)) + return __vlan_find_dev_deep(real_dev->master, vlan_id); + } + + return NULL; +} +EXPORT_SYMBOL(__vlan_find_dev_deep); + struct net_device *vlan_dev_real_dev(const struct net_device *dev) { return vlan_dev_info(dev)->real_dev; -- cgit v1.2.3-59-g8ed1b