diff options
| author |   Jonathan McDowell <noodles@earth.li> | 2020-08-12 20:37:01 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-08-12 13:12:52 -0700 |
| commit | 592d751c1e174df5ff219946908b005eb48934b3 (patch) | |
| tree | a79036cd270d25c157fac9eb626e1b73ebce0ec5 | |
| parent | ipv4: tunnel: fix compilation on ARCH=um (diff) | |
| download | wireguard-linux-592d751c1e174df5ff219946908b005eb48934b3.tar.xz wireguard-linux-592d751c1e174df5ff219946908b005eb48934b3.zip | |
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>
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c index efc6ec1b8027..fc8759f146c7 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c @@ -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; |