[PATCH 4.14 22/48] vxlan: make netlink notify in vxlan_fdb_destroy optional

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Roopa Prabhu <ro...@cumulusnetworks.com>

[ Upstream commit f6e053858671bb156b6e44ad66418acc8c7f4e77 ]

Add a new option do_notify to vxlan_fdb_destroy to make
sending netlink notify optional. Used by a later patch.

Signed-off-by: Roopa Prabhu <ro...@cumulusnetworks.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/net/vxlan.c |   14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -774,13 +774,15 @@ static void vxlan_fdb_free(struct rcu_he
        kfree(f);
 }
 
-static void vxlan_fdb_destroy(struct vxlan_dev *vxlan, struct vxlan_fdb *f)
+static void vxlan_fdb_destroy(struct vxlan_dev *vxlan, struct vxlan_fdb *f,
+                             bool do_notify)
 {
        netdev_dbg(vxlan->dev,
                    "delete %pM\n", f->eth_addr);
 
        --vxlan->addrcnt;
-       vxlan_fdb_notify(vxlan, f, first_remote_rtnl(f), RTM_DELNEIGH);
+       if (do_notify)
+               vxlan_fdb_notify(vxlan, f, first_remote_rtnl(f), RTM_DELNEIGH);
 
        hlist_del_rcu(&f->hlist);
        call_rcu(&f->rcu, vxlan_fdb_free);
@@ -930,7 +932,7 @@ static int __vxlan_fdb_delete(struct vxl
                goto out;
        }
 
-       vxlan_fdb_destroy(vxlan, f);
+       vxlan_fdb_destroy(vxlan, f, true);
 
 out:
        return 0;
@@ -2393,7 +2395,7 @@ static void vxlan_cleanup(unsigned long
                                           "garbage collect %pM\n",
                                           f->eth_addr);
                                f->state = NUD_STALE;
-                               vxlan_fdb_destroy(vxlan, f);
+                               vxlan_fdb_destroy(vxlan, f, true);
                        } else if (time_before(timeout, next_timer))
                                next_timer = timeout;
                }
@@ -2444,7 +2446,7 @@ static void vxlan_fdb_delete_default(str
        spin_lock_bh(&vxlan->hash_lock);
        f = __vxlan_find_mac(vxlan, all_zeros_mac, vni);
        if (f)
-               vxlan_fdb_destroy(vxlan, f);
+               vxlan_fdb_destroy(vxlan, f, true);
        spin_unlock_bh(&vxlan->hash_lock);
 }
 
@@ -2498,7 +2500,7 @@ static void vxlan_flush(struct vxlan_dev
                                continue;
                        /* the all_zeros_mac entry is deleted at vxlan_uninit */
                        if (!is_zero_ether_addr(f->eth_addr))
-                               vxlan_fdb_destroy(vxlan, f);
+                               vxlan_fdb_destroy(vxlan, f, true);
                }
        }
        spin_unlock_bh(&vxlan->hash_lock);