From f849772915e5501c25f69f4815daa8cd86194634 Mon Sep 17 00:00:00 2001 From: Egil Hjelmeland <privat@egil-hjelmeland.no> Date: Tue, 31 Oct 2017 15:48:02 +0100 Subject: [PATCH] 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> --- net/dsa/tag_lan9303.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/dsa/tag_lan9303.c b/net/dsa/tag_lan9303.c index 18f45cd9f625f4..e526c8967b98b0 100644 --- a/net/dsa/tag_lan9303.c +++ b/net/dsa/tag_lan9303.c @@ -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; } -- GitLab