From b156579b1404871d97d2713c1f93c9526618e3ba Mon Sep 17 00:00:00 2001
From: =?utf8?q?Dave=20T=C3=A4ht?= <dave.taht@bufferbloat.net>
Date: Thu, 22 Dec 2011 12:55:08 -0800
Subject: [PATCH] wireless: Treat IPv6 diffserv the same as IPv4 for 802.11e
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Wireless will select a different hardware queue based on the
top 3 bits of the diffserv field, for ipv4. Extend that queue
selection mechanism to ipv6, and make the calls orthogonal.

Signed-off-by: Dave Täht <dave.taht@bufferbloat.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 net/wireless/util.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/net/wireless/util.c b/net/wireless/util.c
index e77df7585004..9aa9db6c8141 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -9,6 +9,7 @@
 #include <linux/slab.h>
 #include <net/cfg80211.h>
 #include <net/ip.h>
+#include <net/dsfield.h>
 #include "core.h"
 
 struct ieee80211_rate *
@@ -650,7 +651,10 @@ unsigned int cfg80211_classify8021d(struct sk_buff *skb)
 
 	switch (skb->protocol) {
 	case htons(ETH_P_IP):
-		dscp = ip_hdr(skb)->tos & 0xfc;
+		dscp = ipv4_get_dsfield(ip_hdr(skb)) & 0xfc;
+		break;
+	case htons(ETH_P_IPV6):
+		dscp = ipv6_get_dsfield(ipv6_hdr(skb)) & 0xfc;
 		break;
 	default:
 		return 0;
-- 
2.39.5