Commit 592d751c authored Aug 12, 2020 by Jonathan McDowell Committed by David S. Miller Aug 12, 2020

net: stmmac: dwmac1000: provide multicast filter fallback



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>

parent 06a7a37b

drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -164,6 +164,9 @@ static void dwmac1000_set_filter(struct mac_device_info *hw,
		value = GMAC_FRAME_FILTER_PR \| GMAC_FRAME_FILTER_PCF;
		} 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;

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