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 multicast traffic which the host has required.
By setting offload_fwd_mark in the skb the bridge will only flood to
ports in other offloads and other netifs.
Signed-off-by: Andrew Lunn <and...@lunn.ch>
---
net/dsa/dsa.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 03c58b0eb082..5732696ac71c 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -213,6 +213,7 @@ static int dsa_switch_rcv(struct sk_buff *skb, struct
net_device *dev,
skb_push(skb, ETH_HLEN);
skb->pkt_type = PACKET_HOST;
skb->protocol = eth_type_trans(skb, skb->dev);
+ skb->offload_fwd_mark = 1;
s = this_cpu_ptr(p->stats64);
u64_stats_update_begin(&s->syncp);
--
2.14.1
