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authorDavid Lamparter <equinox@diac24.net>2011-07-17 08:53:12 +0000
committerDavid S. Miller <davem@davemloft.net>2011-07-17 12:33:22 -0700
commit69ecca86da4890c13a5e29c51b4ac76a1a8a62c9 (patch)
tree3a0084284ef48af692f7471a5736b0099912a77a /net/8021q/vlan.h
parentnet: add 802.1ad / 802.1ah / QinQ ethertypes (diff)
downloadlinux-dev-69ecca86da4890c13a5e29c51b4ac76a1a8a62c9.tar.xz
linux-dev-69ecca86da4890c13a5e29c51b4ac76a1a8a62c9.zip
net: vlan, qlcnic: make vlan_find_dev private
there is only one user of vlan_find_dev outside of the actual vlan code: qlcnic uses it to iterate over some VLANs it knows. let's just make vlan_find_dev private to the VLAN code and have the iteration in qlcnic be a bit more direct. (a few rcu dereferences less too) Signed-off-by: David Lamparter <equinox@diac24.net> Cc: Patrick McHardy <kaber@trash.net> Cc: Amit Kumar Salecha <amit.salecha@qlogic.com> Cc: Anirban Chakraborty <anirban.chakraborty@qlogic.com> Cc: linux-driver@qlogic.com Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q/vlan.h')
-rw-r--r--net/8021q/vlan.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 9da07e30d1a2..b132f542b44b 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -74,6 +74,18 @@ static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
return netdev_priv(dev);
}
+/* Must be invoked with rcu_read_lock or with RTNL. */
+static inline struct net_device *vlan_find_dev(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);
+
+ return NULL;
+}
+
/* found in vlan_dev.c */
void vlan_dev_set_ingress_priority(const struct net_device *dev,
u32 skb_prio, u16 vlan_prio);