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Date:	Sat, 17 Oct 2015 21:12:27 -0400
From:	Thomas F Herbert <thomasfherbert@...il.com>
To:	netdev@...r.kernel.org, pshelar@...ira.com
Cc:	therbert@...hat.com, dev@...nvswitch.org,
	Thomas F Herbert <thomasfherbert@...il.com>
Subject: [PATCH net-next V17 2/3] Check for vlan ethernet types for 8021.q or 802.1ad

Signed-off-by: Thomas F Herbert <thomasfherbert@...il.com>
---
 include/linux/if_vlan.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 67ce5bd..d2494b5 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -627,6 +627,22 @@ static inline netdev_features_t vlan_features_check(const struct sk_buff *skb,
 
 	return features;
 }
+/**
+ * eth_type_vlan - check for valid vlan ether type.
+ * @ethertype: ether type to check
+ *
+ * Returns true if the ether type is a vlan ether type.
+ */
+static inline bool eth_type_vlan(__be16 ethertype)
+{
+	switch (ethertype) {
+	case htons(ETH_P_8021Q):
+	case htons(ETH_P_8021AD):
+		return true;
+	default:
+		return false;
+	}
+}
 
 /**
  * compare_vlan_header - Compare two vlan headers
-- 
2.4.3

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