diff options
| -rw-r--r-- | drivers/net/vxlan/vxlan_core.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c index c3511a43ce99..762dde70d9e9 100644 --- a/drivers/net/vxlan/vxlan_core.c +++ b/drivers/net/vxlan/vxlan_core.c @@ -3037,14 +3037,17 @@ static void vxlan_flush(struct vxlan_dev *vxlan, const struct vxlan_fdb_flush_desc *desc) { bool match_remotes = vxlan_fdb_flush_should_match_remotes(desc); - struct hlist_node *n; struct vxlan_fdb *f; - spin_lock_bh(&vxlan->hash_lock); - hlist_for_each_entry_safe(f, n, &vxlan->fdb_list, fdb_node) { + rcu_read_lock(); + hlist_for_each_entry_rcu(f, &vxlan->fdb_list, fdb_node) { if (!vxlan_fdb_flush_matches(f, vxlan, desc)) continue; + spin_lock_bh(&vxlan->hash_lock); + if (hlist_unhashed(&f->fdb_node)) + goto unlock; + if (match_remotes) { bool destroy_fdb = false; @@ -3052,12 +3055,14 @@ static void vxlan_flush(struct vxlan_dev *vxlan, &destroy_fdb); if (!destroy_fdb) - continue; + goto unlock; } vxlan_fdb_destroy(vxlan, f, true, true); +unlock: + spin_unlock_bh(&vxlan->hash_lock); } - spin_unlock_bh(&vxlan->hash_lock); + rcu_read_unlock(); } static const struct nla_policy vxlan_del_bulk_policy[NDA_MAX + 1] = { |