diff mbox series

[5.4,017/155] net: dsa: Fix duplicate frames flooded by learning

Message ID 20200331085420.308929573@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH March 31, 2020, 8:57 a.m. UTC 
From: Florian Fainelli <f.fainelli@gmail.com>

[ Upstream commit 0e62f543bed03a64495bd2651d4fe1aa4bcb7fe5 ]

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: 5037d532b83d ("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>
---
 net/dsa/tag_brcm.c |    2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

--- a/net/dsa/tag_brcm.c
+++ b/net/dsa/tag_brcm.c
@@ -140,6 +140,8 @@  static struct sk_buff *brcm_tag_rcv_ll(s
 	/* Remove Broadcom tag and update checksum */
 	skb_pull_rcsum(skb, BRCM_TAG_LEN);
 
+	skb->offload_fwd_mark = 1;
+
 	return skb;
 }
 #endif