From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas F Herbert Subject: [PATCH net-next V19 2/3] Check for vlan ethernet types for 8021.q or 802.1ad Date: Fri, 30 Oct 2015 13:08:21 -0400 Message-ID: <1446224902-21246-3-git-send-email-thomasfherbert@gmail.com> References: <1446224902-21246-1-git-send-email-thomasfherbert@gmail.com> Cc: therbert@redhat.com, dev@openvswitch.org, Thomas F Herbert To: netdev@vger.kernel.org, pshelar@nicira.com Return-path: Received: from mail-yk0-f194.google.com ([209.85.160.194]:32866 "EHLO mail-yk0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759037AbbJ3RIv (ORCPT ); Fri, 30 Oct 2015 13:08:51 -0400 Received: by ykdr3 with SMTP id r3so6784933ykd.0 for ; Fri, 30 Oct 2015 10:08:51 -0700 (PDT) In-Reply-To: <1446224902-21246-1-git-send-email-thomasfherbert@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: 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 --- 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