Commit 13edbdb6 authored Nov 09, 2017 by Andrew Lunn Committed by David S. Miller Nov 11, 2017

net: dsa: {e}dsa: set offload_fwd_mark on received packets



The software bridge needs to know if a packet has already been bridged
by hardware offload to ports in the same hardware offload, in order
that it does not re-flood them, causing duplicates. This is
particularly true for broadcast and multicast traffic which the host
has requested.

By setting offload_fwd_mark in the skb the bridge will only flood to
ports in other offloads and other netifs. Set this flag in the DSA and
EDSA tag driver.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent a42c8e33

net/dsa/tag_dsa.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -141,6 +141,8 @@ static struct sk_buff dsa_rcv(struct sk_buff skb, struct net_device *dev,
		2 * ETH_ALEN);
		}

		skb->offload_fwd_mark = 1;

		return skb;
		}

net/dsa/tag_edsa.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -160,6 +160,8 @@ static struct sk_buff edsa_rcv(struct sk_buff skb, struct net_device *dev,
		2 * ETH_ALEN);
		}

		skb->offload_fwd_mark = 1;

		return skb;
		}