VF can receive packets of other functions when in promisc
mode. It's not safe, so don't allow VF to enable promisc
mode.
Signed-off-by: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>