From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753791Ab1BBVfm (ORCPT ); Wed, 2 Feb 2011 16:35:42 -0500 Received: from p3plsmtps2ded01.prod.phx3.secureserver.net ([208.109.80.58]:33003 "HELO p3plsmtps2ded01-01.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752762Ab1BBVfl (ORCPT ); Wed, 2 Feb 2011 16:35:41 -0500 From: Haiyang Zhang To: haiyangz@microsoft.com, hjanssen@microsoft.com, gregkh@suse.de, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, virtualization@lists.osdl.org Cc: stable Subject: [PATCH] staging: hv: Enable sending GARP packet after live migration Date: Wed, 2 Feb 2011 13:42:58 -0800 Message-Id: <1296682978-19223-1-git-send-email-haiyangz@microsoft.com> X-Mailer: git-send-email 1.5.5.6 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The hv_netvsc gets RNDIS_STATUS_MEDIA_CONNECT event after the VM is live migrated. Adding call to netif_notify_peers() for this event to send GARP (Gratuitous ARP) to notify network peers. Otherwise, the VM's network connection may stop after a live migration. This patch should also be applied to stable kernel 2.6.32 and later. Signed-off-by: Haiyang Zhang Signed-off-by: Hank Janssen Cc: stable --- drivers/staging/hv/netvsc_drv.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/staging/hv/netvsc_drv.c b/drivers/staging/hv/netvsc_drv.c index 54706a1..b41c964 100644 --- a/drivers/staging/hv/netvsc_drv.c +++ b/drivers/staging/hv/netvsc_drv.c @@ -236,6 +236,7 @@ static void netvsc_linkstatus_callback(struct hv_device *device_obj, if (status == 1) { netif_carrier_on(net); netif_wake_queue(net); + netif_notify_peers(net); } else { netif_carrier_off(net); netif_stop_queue(net); -- 1.5.5.6