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Commit 7582f5b7 authored by Pablo Neira Ayuso's avatar Pablo Neira Ayuso
Browse files

bridge: add br_vlan_get_pvid_rcu() 



This new function allows you to fetch bridge pvid from packet path.

Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
Acked-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
parent 9d6a1ecd

include/linux/if_bridge.h

+6 −0
Original line number Diff line number Diff line
@@ -88,6 +88,7 @@ static inline bool br_multicast_router(const struct net_device *dev) 
#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)

bool br_vlan_enabled(const struct net_device *dev);

int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);

int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);

int br_vlan_get_info(const struct net_device *dev, u16 vid,

		     struct bridge_vlan_info *p_vinfo);

#else
@@ -101,6 +102,11 @@ static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 
	return -EINVAL;

}



static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)

{

	return -EINVAL;

}



static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,

				   struct bridge_vlan_info *p_vinfo)

{

net/bridge/br_vlan.c

+15 −4
Original line number Diff line number Diff line
@@ -1227,13 +1227,11 @@ void br_vlan_get_stats(const struct net_bridge_vlan *v, 
	}

}



int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)

static int __br_vlan_get_pvid(const struct net_device *dev,

			      struct net_bridge_port *p, u16 *p_pvid)

{

	struct net_bridge_vlan_group *vg;

	struct net_bridge_port *p;



	ASSERT_RTNL();

	p = br_port_get_check_rtnl(dev);

	if (p)

		vg = nbp_vlan_group(p);

	else if (netif_is_bridge_master(dev))
@@ -1244,8 +1242,21 @@ int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 
	*p_pvid = br_get_pvid(vg);

	return 0;

}



int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)

{

	ASSERT_RTNL();



	return __br_vlan_get_pvid(dev, br_port_get_check_rtnl(dev), p_pvid);

}

EXPORT_SYMBOL_GPL(br_vlan_get_pvid);



int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)

{

	return __br_vlan_get_pvid(dev, br_port_get_check_rcu(dev), p_pvid);

}

EXPORT_SYMBOL_GPL(br_vlan_get_pvid_rcu);



int br_vlan_get_info(const struct net_device *dev, u16 vid,

		     struct bridge_vlan_info *p_vinfo)

{