netdev - [037/111] xen: netfront: explicitly generate arp

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Date:	Wed, 11 Aug 2010 16:54:18 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Ian Campbell <ian.campbell@...rix.com>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	xen-devel@...ts.xensource.com
Subject: [037/111] xen: netfront: explicitly generate arp_notify event after migration.

2.6.32-stable review patch.  If anyone has any objections, please let us know.

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

From: Ian Campbell <Ian.Campbell@...rix.com>

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@...rix.com>
Cc: Stephen Hemminger <shemminger@...ux-foundation.org>
Cc: Jeremy Fitzhardinge <jeremy@...p.org>
Cc: David S. Miller <davem@...emloft.net>
Cc: netdev@...r.kernel.org
Cc: xen-devel@...ts.xensource.com
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

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

--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -1619,6 +1619,7 @@ 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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