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bridge: add br_vlan_get_proto()

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This new function allows you to fetch the bridge port vlan protocol.

Signed-off-by: wenxu <wenxu@ucloud.cn>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
wenxu 2019-07-05 21:16:36 +08:00 committed by Pablo Neira Ayuso
parent c54c7c6854
commit 31aed46fed
2 changed files with 16 additions and 0 deletions
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6
include/linux/if_bridge.h
View File

@ -89,6 +89,7 @@ static inline bool br_multicast_router(const struct net_device *dev)
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_proto(const struct net_device *dev, u16 *p_proto);
int br_vlan_get_info(const struct net_device *dev, u16 vid,
struct bridge_vlan_info *p_vinfo);
#else
@ -102,6 +103,11 @@ static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
return -EINVAL;
}
static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
{
return -EINVAL;
}
static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
{
return -EINVAL;

10
net/bridge/br_vlan.c
View File

@ -797,6 +797,16 @@ bool br_vlan_enabled(const struct net_device *dev)
}
EXPORT_SYMBOL_GPL(br_vlan_enabled);
int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
{
struct net_bridge *br = netdev_priv(dev);
*p_proto = ntohs(br->vlan_proto);
return 0;
}
EXPORT_SYMBOL_GPL(br_vlan_get_proto);
int __br_vlan_set_proto(struct net_bridge *br, __be16 proto)
{
int err = 0;