From: Jonathan McDowell noodles@earth.li
commit 592d751c1e174df5ff219946908b005eb48934b3 upstream.
If we don't have a hardware multicast filter available then instead of silently failing to listen for the requested ethernet broadcast addresses fall back to receiving all multicast packets, in a similar fashion to other drivers with no multicast filter.
Cc: stable@vger.kernel.org Signed-off-by: Jonathan McDowell noodles@earth.li Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c @@ -172,6 +172,9 @@ static void dwmac1000_set_filter(struct value = GMAC_FRAME_FILTER_PR; } else if (dev->flags & IFF_ALLMULTI) { value = GMAC_FRAME_FILTER_PM; /* pass all multi */ + } else if (!netdev_mc_empty(dev) && (mcbitslog2 == 0)) { + /* Fall back to all multicast if we've no filter */ + value = GMAC_FRAME_FILTER_PM; } else if (!netdev_mc_empty(dev)) { struct netdev_hw_addr *ha;