net: ipvlan: Issue NETDEV_PRE_CHANGEADDR

A NETDEV_CHANGEADDR event implies a change of address of each of the
IPVLANs of this IPVLAN device. Therefore propagate NETDEV_PRE_CHANGEADDR
to all the IPVLANs.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c
index 723a3f663c06..19bdde60680c 100644
--- a/drivers/net/ipvlan/ipvlan_main.c
+++ b/drivers/net/ipvlan/ipvlan_main.c
@@ -759,10 +759,13 @@ EXPORT_SYMBOL_GPL(ipvlan_link_register);
 static int ipvlan_device_event(struct notifier_block *unused,
                                unsigned long event, void *ptr)
 {
+        struct netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr);
+        struct netdev_notifier_pre_changeaddr_info *prechaddr_info;
         struct net_device *dev = netdev_notifier_info_to_dev(ptr);
         struct ipvl_dev *ipvlan, *next;
         struct ipvl_port *port;
         LIST_HEAD(lst_kill);
+        int err;
 
         if (!netif_is_ipvlan_port(dev))
                 return NOTIFY_DONE;
@@ -818,6 +821,17 @@ static int ipvlan_device_event(struct notifier_block *unused,
                         ipvlan_adjust_mtu(ipvlan, dev);
                 break;
 
+        case NETDEV_PRE_CHANGEADDR:
+                prechaddr_info = ptr;
+                list_for_each_entry(ipvlan, &port->ipvlans, pnode) {
+                        err = dev_pre_changeaddr_notify(ipvlan->dev,
+                                                    prechaddr_info->dev_addr,
+                                                    extack);
+                        if (err)
+                                return notifier_from_errno(err);
+                }
+                break;
+
         case NETDEV_CHANGEADDR:
                 list_for_each_entry(ipvlan, &port->ipvlans, pnode) {
                         ether_addr_copy(ipvlan->dev->dev_addr, dev->dev_addr);