Return-path: Received: from packetmixer.de ([79.140.42.25]:41617 "EHLO mail.mail.packetmixer.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752362AbaBXM2t (ORCPT ); Mon, 24 Feb 2014 07:28:49 -0500 From: Simon Wunderlich To: netdev@vger.kernel.org Cc: davem@davemloft.net, linux-wireless@vger.kernel.org, mathias.kretschmer@fokus.fraunhofer.de, Simon Wunderlich Subject: [net-next v3 3/3] cfg80211: add MPLS and 802.21 classification Date: Mon, 24 Feb 2014 13:28:40 +0100 Message-Id: <1393244920-15903-4-git-send-email-sw@simonwunderlich.de> (sfid-20140224_132903_316161_47795452) In-Reply-To: <1393244920-15903-1-git-send-email-sw@simonwunderlich.de> References: <1393244920-15903-1-git-send-email-sw@simonwunderlich.de> Sender: linux-wireless-owner@vger.kernel.org List-ID: MPLS labels may contain traffic control information, which should be evaluated and used by the wireless subsystem if present. Also check for IEEE 802.21 which is always network control traffic. Signed-off-by: Simon Wunderlich Signed-off-by: Mathias Kretschmer --- Changes to second version: * rely on skb->protocol instead of checking ethertype Changes to first version: * include linux/mpls.h, not the UAPI one * change __constant_htons to htons --- net/wireless/util.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/net/wireless/util.c b/net/wireless/util.c index d39c371..6799d5a 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "core.h" #include "rdev-ops.h" @@ -717,6 +718,21 @@ unsigned int cfg80211_classify8021d(struct sk_buff *skb, case htons(ETH_P_IPV6): dscp = ipv6_get_dsfield(ipv6_hdr(skb)) & 0xfc; break; + case htons(ETH_P_MPLS_UC): + case htons(ETH_P_MPLS_MC): { + struct mpls_label_stack mpls_tmp, *mpls; + + mpls = skb_header_pointer(skb, sizeof(struct ethhdr), + sizeof(*mpls), &mpls_tmp); + if (!mpls) + return 0; + + return (ntohl(mpls->entry) & MPLS_LS_TC_MASK) + >> MPLS_LS_TC_SHIFT; + } + case htons(ETH_P_80221): + /* 802.21 is always network control traffic */ + return 7; default: return 0; } -- 1.7.10.4