This is a note to let you know that I've just added the patch titled
net: ethernet: stmmac: Disable hardware multicast filter
to the 5.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-ethernet-stmmac-disable-hardware-multicast-filter.patch
and it can be found in the queue-5.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From df43dd526e6609769ae513a81443c7aa727c8ca3 Mon Sep 17 00:00:00 2001
From: Jonathan McDowell <noodles@xxxxxxxx>
Date: Wed, 12 Aug 2020 20:37:23 +0100
Subject: net: ethernet: stmmac: Disable hardware multicast filter
From: Jonathan McDowell <noodles@xxxxxxxx>
commit df43dd526e6609769ae513a81443c7aa727c8ca3 upstream.
The IPQ806x does not appear to have a functional multicast ethernet
address filter. This was observed as a failure to correctly receive IPv6
packets on a LAN to the all stations address. Checking the vendor driver
shows that it does not attempt to enable the multicast filter and
instead falls back to receiving all multicast packets, internally
setting ALLMULTI.
Use the new fallback support in the dwmac1000 driver to correctly
achieve the same with the mainline IPQ806x driver. Confirmed to fix IPv6
functionality on an RB3011 router.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Jonathan McDowell <noodles@xxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
@@ -351,6 +351,7 @@ static int ipq806x_gmac_probe(struct pla
plat_dat->has_gmac = true;
plat_dat->bsp_priv = gmac;
plat_dat->fix_mac_speed = ipq806x_gmac_fix_mac_speed;
+ plat_dat->multicast_filter_bins = 0;
err = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
if (err)
Patches currently in stable-queue which might be from noodles@xxxxxxxx are
queue-5.7/net-ethernet-stmmac-disable-hardware-multicast-filter.patch
queue-5.7/net-stmmac-dwmac1000-provide-multicast-filter-fallback.patch
