netdev - [PATCH RFC 4/5] net: dsa: Flag slave network devices with IFF_L2

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Message-Id: <1440543015-14693-5-git-send-email-f.fainelli@gmail.com>
Date:	Tue, 25 Aug 2015 15:50:14 -0700
From:	Florian Fainelli <f.fainelli@...il.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, andrew@...n.ch, linux@...ck-us.net,
	jiri@...nulli.us, sfeldma@...il.com,
	Florian Fainelli <f.fainelli@...il.com>
Subject: [PATCH RFC 4/5] net: dsa: Flag slave network devices with IFF_L2_ONLY

When tagging is not supported by the underlying switch driver,
ds->tag_protocol will be set to DSA_TAG_PROTO_NONE, and we should be
flagging the slave network devices with IFF_L2_ONLY such that IP
configuration is denied and they are just control end-points.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 net/dsa/slave.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index cce97385f743..855c66dddced 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1185,6 +1185,7 @@ int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
 		break;
 #endif
 	default:
+		slave_dev->flags |= IFF_L2_ONLY;
 		p->xmit	= dsa_slave_notag_xmit;
 		break;
 	}
-- 
2.1.0

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