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net: dsa: Fix duplicate frames flooded by learning

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[ Upstream commit 0e62f543be ]

When both the switch and the bridge are learning about new addresses,
switch ports attached to the bridge would see duplicate ARP frames
because both entities would attempt to send them.

Fixes: 5037d532b8 ("net: dsa: add Broadcom tag RX/TX handler")
Reported-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Florian Fainelli
2020-03-22 13:58:50 -07:00
committed by Greg Kroah-Hartman
parent c94fbe2892
commit e90e9226be
1 changed files with 2 additions and 0 deletions
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2
net/dsa/tag_brcm.c
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@@ -141,6 +141,8 @@ static struct sk_buff *brcm_tag_rcv_ll(struct sk_buff *skb,
/* Remove Broadcom tag and update checksum */
skb_pull_rcsum(skb, BRCM_TAG_LEN);
skb->offload_fwd_mark = 1;
return skb;
}