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[Xen-devel] [46/54] xen: netfront: explicitly generate arp_notify event

To: linux-kernel@xxxxxxxxxxxxxxx, stable@xxxxxxxxxx
Subject: [Xen-devel] [46/54] xen: netfront: explicitly generate arp_notify event after migration.
From: Greg KH <gregkh@xxxxxxx>
Date: Wed, 11 Aug 2010 17:01:01 -0700
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, Ian Campbell <ian.campbell@xxxxxxxxxx>, torvalds@xxxxxxxxxxxxxxxxxxxx, "David S. Miller" <davem@xxxxxxxxxxxxx>, netdev@xxxxxxxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx>, stable-review@xxxxxxxxxx, alan@xxxxxxxxxxxxxxxxxxx
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2.6.34-stable review patch.  If anyone has any objections, please let us know.

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

From: Ian Campbell <Ian.Campbell@xxxxxxxxxx>

commit 592970675c9522bde588b945388c7995c8b51328 upstream.

Use newly introduced netif_notify_peers() method to ensure a gratuitous ARP is
generated after a migration.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Cc: Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx>
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 drivers/net/xen-netfront.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -1621,6 +1621,7 @@ static void backend_changed(struct xenbu
                if (xennet_connect(netdev) != 0)
                        break;
                xenbus_switch_state(dev, XenbusStateConnected);
+               netif_notify_peers(netdev);
                break;
 
        case XenbusStateClosing:



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