[PATCH net-next V20 2/3] Check for vlan ethernet types for 8021.q or 802.1ad
From: Thomas F Herbert <hidden>
Date: 2015-11-05 19:34:04
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted> --- 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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