Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 43920edf authored by Petr Machata's avatar Petr Machata Committed by David S. Miller
Browse files

bridge: Add br_fdb_clear_offload() 



When a driver unoffloads all FDB entries en bloc, it's inefficient to
send the switchdev notification one by one. Add a helper that unsets the
offload flag on FDB entries on a given bridge port and VLAN.

Signed-off-by: default avatarPetr Machata <petrm@mellanox.com>
Acked-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e5ff4b19

include/linux/if_bridge.h

+6 −0
Original line number Diff line number Diff line
@@ -119,6 +119,7 @@ static inline int br_vlan_get_info(const struct net_device *dev, u16 vid, 
struct net_device *br_fdb_find_port(const struct net_device *br_dev,

				    const unsigned char *addr,

				    __u16 vid);

void br_fdb_clear_offload(const struct net_device *dev, u16 vid);

bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);

#else

static inline struct net_device *
@@ -128,6 +129,11 @@ br_fdb_find_port(const struct net_device *br_dev, 
{

	return NULL;

}



static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)

{

}



static inline bool

br_port_flag_is_set(const struct net_device *dev, unsigned long flag)

{

net/bridge/br_fdb.c

+20 −0
Original line number Diff line number Diff line
@@ -1164,3 +1164,23 @@ void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p, 


	spin_unlock_bh(&br->hash_lock);

}



void br_fdb_clear_offload(const struct net_device *dev, u16 vid)

{

	struct net_bridge_fdb_entry *f;

	struct net_bridge_port *p;



	ASSERT_RTNL();



	p = br_port_get_rtnl(dev);

	if (!p)

		return;



	spin_lock_bh(&p->br->hash_lock);

	hlist_for_each_entry(f, &p->br->fdb_list, fdb_node) {

		if (f->dst == p && f->key.vlan_id == vid)

			f->offloaded = 0;

	}

	spin_unlock_bh(&p->br->hash_lock);

}

EXPORT_SYMBOL_GPL(br_fdb_clear_offload);