Drivers: net: hyperv: Negotiate suitable ndis version for offload support

Ws2008R2 supports ndis_version 6.1 and 6.1 is the minimal version required
for various offloads. Negotiate ndis_version 6.1 when on ws2008r2.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/hyperv/netvsc.c

@@ -344,7 +344,7 @@ static int netvsc_connect_vsp(struct hv_device *device)
 	memset(init_packet, 0, sizeof(struct nvsp_message));
 
 	if (net_device->nvsp_version <= NVSP_PROTOCOL_VERSION_4)
-		ndis_version = 0x00050001;
+		ndis_version = 0x00060001;
 	else
 		ndis_version = 0x0006001e;