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| author | Jonathan McDowell <noodles@earth.li> | 2020-08-12 20:37:01 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-21 10:53:05 +0200 |
| commit | 37708e6faac40ad493e054b2d58d67510a6b79df (patch) | |
| tree | 2437a3e0cc523cb17fc3415e55b25b266ae889c1 | |
| parent | 42f964c4f2b27686877be9b806301436bf36feb6 (diff) | |
| download | linux-stable-37708e6faac40ad493e054b2d58d67510a6b79df.tar.gz linux-stable-37708e6faac40ad493e054b2d58d67510a6b79df.tar.bz2 linux-stable-37708e6faac40ad493e054b2d58d67510a6b79df.zip | |
net: stmmac: dwmac1000: provide multicast filter fallback
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>
| -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 b535f6c37838..ac08031c481f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c @@ -146,6 +146,9 @@ static void dwmac1000_set_filter(struct mac_device_info *hw, 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; |