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Commit e5ff4b19 authored by Petr Machata's avatar Petr Machata Committed by David S. Miller
Browse files

vxlan: Add vxlan_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 walks the
FDB table, unsetting the offload flag on RDST with a given VNI.

Signed-off-by: default avatarPetr Machata <petrm@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4f89f5b5

drivers/net/vxlan.c

+22 −0
Original line number Original line Diff line number Diff line
@@ -599,6 +599,28 @@ int vxlan_fdb_replay(const struct net_device *dev, __be32 vni, 
}

}

EXPORT_SYMBOL_GPL(vxlan_fdb_replay);

EXPORT_SYMBOL_GPL(vxlan_fdb_replay);





void vxlan_fdb_clear_offload(const struct net_device *dev, __be32 vni)

{

	struct vxlan_dev *vxlan;

	struct vxlan_rdst *rdst;

	struct vxlan_fdb *f;

	unsigned int h;



	if (!netif_is_vxlan(dev))

		return;

	vxlan = netdev_priv(dev);



	spin_lock_bh(&vxlan->hash_lock);

	for (h = 0; h < FDB_HASH_SIZE; ++h) {

		hlist_for_each_entry(f, &vxlan->fdb_head[h], hlist)

			if (f->vni == vni)

				list_for_each_entry(rdst, &f->remotes, list)

					rdst->offloaded = false;

	}

	spin_unlock_bh(&vxlan->hash_lock);

}

EXPORT_SYMBOL_GPL(vxlan_fdb_clear_offload);



/* Replace destination of unicast mac */

/* Replace destination of unicast mac */

static int vxlan_fdb_replace(struct vxlan_fdb *f,

static int vxlan_fdb_replace(struct vxlan_fdb *f,

			     union vxlan_addr *ip, __be16 port, __be32 vni,

			     union vxlan_addr *ip, __be16 port, __be32 vni,

include/net/vxlan.h

+6 −0
Original line number Original line Diff line number Diff line
@@ -429,6 +429,7 @@ int vxlan_fdb_find_uc(struct net_device *dev, const u8 *mac, __be32 vni, 
		      struct switchdev_notifier_vxlan_fdb_info *fdb_info);

		      struct switchdev_notifier_vxlan_fdb_info *fdb_info);

int vxlan_fdb_replay(const struct net_device *dev, __be32 vni,

int vxlan_fdb_replay(const struct net_device *dev, __be32 vni,

		     struct notifier_block *nb);

		     struct notifier_block *nb);

void vxlan_fdb_clear_offload(const struct net_device *dev, __be32 vni);





#else

#else

static inline int

static inline int
@@ -443,6 +444,11 @@ static inline int vxlan_fdb_replay(const struct net_device *dev, __be32 vni, 
{

{

	return -EOPNOTSUPP;

	return -EOPNOTSUPP;

}

}



static inline void

vxlan_fdb_clear_offload(const struct net_device *dev, __be32 vni)

{

}

#endif

#endif





#endif
 
#endif