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authorPetr Machata <petrm@mellanox.com>2018-12-07 19:55:06 +0000
committerDavid S. Miller <davem@davemloft.net>2018-12-07 12:59:08 -0800
commite5ff4b1952893fb75aa75067fce31c8567341ed7 (patch)
treea07859a0b365af97fb147a696fbc5c577f0f6041 /drivers/net/vxlan.c
parentvxlan: Add vxlan_fdb_replay() (diff)
downloadlinux-dev-e5ff4b1952893fb75aa75067fce31c8567341ed7.tar.xz
linux-dev-e5ff4b1952893fb75aa75067fce31c8567341ed7.zip
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: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vxlan.c')
-rw-r--r--drivers/net/vxlan.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index d9cb0d903283..b56ef684ecac 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -599,6 +599,28 @@ out:
}
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 */
static int vxlan_fdb_replace(struct vxlan_fdb *f,
union vxlan_addr *ip, __be16 port, __be32 vni,