From: Haiyang Zhang <haiyangz@microsoft.com>
To: haiyangz@microsoft.com, hjanssen@microsoft.com, gregkh@suse.de,
linux-kernel@vger.kernel.org, devel@linuxdriverproject.org,
virtualization@lists.osdl.org
Cc: stable <stable@kernel.org>
Subject: [PATCH] staging: hv: Enable sending GARP packet after live migration
Date: Wed, 2 Feb 2011 13:42:58 -0800 [thread overview]
Message-ID: <1296682978-19223-1-git-send-email-haiyangz@microsoft.com> (raw)
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 <haiyangz@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Cc: stable <stable@kernel.org>
---
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
reply other threads:[~2011-02-02 21:42 UTC|newest]
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