[PATCH net v5 3/5] net: stmmac: fix missing IFF_MULTICAST check in dwmac4_set_filter
From: Ong Boon Leong <hidden>
Date: 2020-02-07 07:34:26
Also in:
lkml, netdev
Subsystem:
networking drivers, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Maxime Chevallier, Linus Torvalds
From: "Verma, Aashish" <redacted>
Without checking for IFF_MULTICAST flag, it is wrong to assume multicast
filtering is always enabled. By checking against IFF_MULTICAST, now
the driver behaves correctly when the multicast support is toggled by below
command:-
ip link set <devname> multicast off|on
Fixes: 477286b53f55 ("stmmac: add GMAC4 core support")
Signed-off-by: Verma, Aashish <redacted>
Tested-by: Tan, Tee Min <redacted>
Signed-off-by: Ong Boon Leong <redacted>
---
drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index 4d8eef9ff137..dc09d2131e40 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c@@ -420,7 +420,7 @@ static void dwmac4_set_filter(struct mac_device_info *hw, value |= GMAC_PACKET_FILTER_PM; /* Set all the bits of the HASH tab */ memset(mc_filter, 0xff, sizeof(mc_filter)); - } else if (!netdev_mc_empty(dev)) { + } else if (!netdev_mc_empty(dev) && (dev->flags & IFF_MULTICAST)) { struct netdev_hw_addr *ha; /* Hash filter for multicast */
--
2.17.1
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