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bridge: Export VLAN filtering state

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It's useful for drivers supporting bridge offload to be able to query
the bridge's VLAN filtering state.

Currently, upon enslavement to a bridge master, the offloading driver
will only learn about the bridge's VLAN filtering state after the bridge
device was already linked with its slave.

Being able to query the bridge's VLAN filtering state allows such
drivers to forbid enslavement in case resource couldn't be allocated for
a VLAN-aware bridge and also choose the correct initialization routine
for the enslaved port, which is dependent on the bridge type.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel
2017-05-26 08:37:23 +02:00
committed by David S. Miller
parent 5f9e27e60e
commit 1f51445af3
6 changed files with 21 additions and 13 deletions
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9
net/bridge/br_private.h
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@@ -854,10 +854,6 @@ static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
return vg->pvid;
}
static inline int br_vlan_enabled(struct net_bridge *br)
{
return br->vlan_enabled;
}
#else
static inline bool br_allowed_ingress(const struct net_bridge *br,
struct net_bridge_vlan_group *vg,
@@ -945,11 +941,6 @@ static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
return 0;
}
static inline int br_vlan_enabled(struct net_bridge *br)
{
return 0;
}
static inline int __br_vlan_filter_toggle(struct net_bridge *br,
unsigned long val)
{