netdev - [PATCH net-next 4/4] batman-adv: Act on NETDEV_*_TYPE

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Message-Id: <1449173553-23784-5-git-send-email-andrew@lunn.ch>
Date:	Thu,  3 Dec 2015 21:12:33 +0100
From:	Andrew Lunn <andrew@...n.ch>
To:	David Miller <davem@...emloft.net>
Cc:	Krzysztof Halasa <khc@...waw.pl>,
	Marek Lindner <mareklindner@...mailbox.ch>,
	netdev <netdev@...r.kernel.org>,
	"B.A.T.M.A.N" <b.a.t.m.a.n@...ts.open-mesh.net>,
	Andrew Lunn <andrew@...n.ch>
Subject: [PATCH net-next 4/4] batman-adv: Act on NETDEV_*_TYPE_CHANGE events

A network interface can change type. It may change from a type which
batman does not support, e.g. hdlc, to one it does, e.g. hdlc-eth.
When an interface changes type, it sends two notifications. Handle
these notifications.

Signed-off-by: Andrew Lunn <andrew@...n.ch>
---
 net/batman-adv/hard-interface.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index f11345e163d7..c7f00eeb735b 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -708,7 +708,8 @@ static int batadv_hard_if_event(struct notifier_block *this,
 	}
 
 	hard_iface = batadv_hardif_get_by_netdev(net_dev);
-	if (!hard_iface && event == NETDEV_REGISTER)
+	if (!hard_iface && (event == NETDEV_REGISTER ||
+			    event == NETDEV_POST_TYPE_CHANGE))
 		hard_iface = batadv_hardif_add_interface(net_dev);
 
 	if (!hard_iface)
@@ -723,6 +724,7 @@ static int batadv_hard_if_event(struct notifier_block *this,
 		batadv_hardif_deactivate_interface(hard_iface);
 		break;
 	case NETDEV_UNREGISTER:
+	case NETDEV_PRE_TYPE_CHANGE:
 		list_del_rcu(&hard_iface->list);
 
 		batadv_hardif_remove_interface(hard_iface);
-- 
2.6.2

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