From: Thomas F Herbert <thomasfherbert-Re5JQEeQqe8AvxtiuMwx3w@public•gmane.org>
To: netdev-u79uwXL29TY76Z2rM5mHXA@public•gmane.org,
pshelar-l0M0P4e3n4LQT0dZR+AlfA@public•gmane.org
Cc: dev-yBygre7rU0TnMu66kgdUjQ@public•gmane.org,
therbert-H+wXaHxf7aLQT0dZR+AlfA@public•gmane.org
Subject: [PATCH net-next V20 2/3] Check for vlan ethernet types for 8021.q or 802.1ad
Date: Thu, 5 Nov 2015 14:34:04 -0500 [thread overview]
Message-ID: <1446752045-5227-3-git-send-email-thomasfherbert@gmail.com> (raw)
In-Reply-To: <1446752045-5227-1-git-send-email-thomasfherbert-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
This is to simplify using double tagged vlans. This function allows all
valid vlan ethertypes to be checked in a single function call.
Signed-off-by: Thomas F Herbert <thomasfherbert@gmail•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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next prev parent reply other threads:[~2015-11-05 19:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-05 19:34 [PATCH net-next V20 0/3] openvswitch: Add support for 802.1ad Thomas F Herbert
2015-11-05 19:34 ` [PATCH net-dev V20 1/3] openvswitch: 802.1ad uapi changes Thomas F Herbert
[not found] ` <1446752045-5227-1-git-send-email-thomasfherbert-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-11-05 19:34 ` Thomas F Herbert [this message]
2015-11-05 19:34 ` [PATCH net-next V20 3/3] openvswitch: 802.1AD: Flow handling, actions, vlan parsing and netlink attributes Thomas F Herbert
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