netdev - [PATCH net-next 06/13] net: ipvlan: Issue NETDEV_PRE

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Date:   Thu, 13 Dec 2018 11:54:41 +0000
From:   Petr Machata <petrm@...lanox.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     "j.vosburgh@...il.com" <j.vosburgh@...il.com>,
        "vfalico@...il.com" <vfalico@...il.com>,
        "andy@...yhouse.net" <andy@...yhouse.net>,
        "davem@...emloft.net" <davem@...emloft.net>,
        Jiri Pirko <jiri@...lanox.com>,
        Ido Schimmel <idosch@...lanox.com>,
        "roopa@...ulusnetworks.com" <roopa@...ulusnetworks.com>,
        "nikolay@...ulusnetworks.com" <nikolay@...ulusnetworks.com>
Subject: [PATCH net-next 06/13] 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@...lanox.com>
Acked-by: Jiri Pirko <jiri@...lanox.com>
Reviewed-by: Ido Schimmel <idosch@...lanox.com>
---
 drivers/net/ipvlan/ipvlan_main.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

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);
-- 
2.4.11