Messages in this thread Patch in this message | | | From | Ong Boon Leong <> | Subject | [PATCH net v5 3/5] net: stmmac: fix missing IFF_MULTICAST check in dwmac4_set_filter | Date | Fri, 7 Feb 2020 15:33:54 +0800 |
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From: "Verma, Aashish" <aashishx.verma@intel.com>
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 <aashishx.verma@intel.com> Tested-by: Tan, Tee Min <tee.min.tan@intel.com> Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com> --- 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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