[PATCH net-next v6 3/4] dsa: tag_mxl862xx: set dsa_default_offload_fwd_mark()

[Daniel Golle <daniel@makrotopia.org>]

The MxL862xx offloads bridge forwarding in hardware, so set
dsa_default_offload_fwd_mark() to avoid duplicate forwarding of
packets of (eg. flooded) frames arriving at the CPU port.

Link-local frames are directly trapped to the CPU port only, so don't
set dsa_default_offload_fwd_mark() on those.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
v6: no changes
v5: move link-local check before dsa_strip_etype_header()
v4: no changes
v3: no changes
v2: don't set dsa_default_offload_fwd_mark() on link-local frames
---
 net/dsa/tag_mxl862xx.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/dsa/tag_mxl862xx.c b/net/dsa/tag_mxl862xx.c
index 01f2158682718..8daefeb8d49df 100644
--- a/net/dsa/tag_mxl862xx.c
+++ b/net/dsa/tag_mxl862xx.c
@@ -86,6 +86,9 @@ static struct sk_buff *mxl862_tag_rcv(struct sk_buff *skb,
 		return NULL;
 	}
 
+	if (likely(!is_link_local_ether_addr(eth_hdr(skb)->h_dest)))
+		dsa_default_offload_fwd_mark(skb);
+
 	/* remove the MxL862xx special tag between the MAC addresses and the
 	 * current ethertype field.
 	 */
-- 
2.53.0