Commit f8497729 authored Oct 31, 2017 by Egil Hjelmeland Committed by David S. Miller Nov 01, 2017

net: dsa: lan9303: lan9303_rcv set skb->offload_fwd_mark



The chip flood broadcast and unknown multicast frames.
On receive set skb->offload_fwd_mark to prevent the SW from flooding to the
same ports.

One exception: Because the ALR is set up to forward STP BPDUs only to CPU,
the SW bridge should flood STP BPDUs if local STP is not enabled.
This is archived by not setting skb->offload_fwd_mark on STP BPDUs.

Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent e9292f2c

net/dsa/tag_lan9303.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -126,6 +126,8 @@ static struct sk_buff lan9303_rcv(struct sk_buff skb, struct net_device *dev,
		skb_pull_rcsum(skb, 2 + 2);
		memmove(skb->data - ETH_HLEN, skb->data - (ETH_HLEN + LAN9303_TAG_LEN),
		2 * ETH_ALEN);
		skb->offload_fwd_mark = !ether_addr_equal(skb->data - ETH_HLEN,
		eth_stp_addr);

		return skb;
		}

Admin message