netdev - [PATCH RFC WIP 2/5] net: bridge: Skip receive handler on brX interface

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Date:   Sat, 26 Aug 2017 22:56:07 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     netdev <netdev@...r.kernel.org>
Cc:     Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        nikolay@...ulusnetworks.com, jiri@...lanox.com,
        roopa@...ulusnetworks.com, stephen@...workplumber.org,
        bridge@...ts.linux-foundation.org, Andrew Lunn <andrew@...n.ch>
Subject: [PATCH RFC WIP 2/5] net: bridge: Skip receive handler on brX interface

The brX interface will soon become a member of the bridge. As such, it
will get a receiver handler assigned. However, we don't want to handle
packets received on this soft interfaces. So detect the condition and
say all the packets pass.
---
 net/bridge/br_input.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 7637f58c1226..38c2a41968f2 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -267,6 +267,10 @@ rx_handler_result_t br_handle_frame(struct sk_buff **pskb)
 		return RX_HANDLER_CONSUMED;
 
 	p = br_port_get_rcu(skb->dev);
+
+	if (p->dev == p->br->dev)
+		return RX_HANDLER_PASS;
+
 	if (p->flags & BR_VLAN_TUNNEL) {
 		if (br_handle_ingress_vlan_tunnel(skb, p,
 						  nbp_vlan_group_rcu(p)))
-- 
2.14.1