From e5ff4b1952893fb75aa75067fce31c8567341ed7 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Fri, 7 Dec 2018 19:55:06 +0000 Subject: [PATCH] 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 Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller --- drivers/net/vxlan.c | 22 ++++++++++++++++++++++ include/net/vxlan.h | 6 ++++++ 2 files changed, 28 insertions(+) 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, diff --git a/include/net/vxlan.h b/include/net/vxlan.h index f49aa9afe598..236403eb5ba6 100644 --- a/include/net/vxlan.h +++ b/include/net/vxlan.h @@ -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); int vxlan_fdb_replay(const struct net_device *dev, __be32 vni, struct notifier_block *nb); +void vxlan_fdb_clear_offload(const struct net_device *dev, __be32 vni); #else static inline int @@ -443,6 +444,11 @@ static inline int vxlan_fdb_replay(const struct net_device *dev, __be32 vni, { return -EOPNOTSUPP; } + +static inline void +vxlan_fdb_clear_offload(const struct net_device *dev, __be32 vni) +{ +} #endif #endif -- 2.30.2