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Account HT Control field also in Data frame hdrlen according to 802.11n-2009

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diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 8427019..1998495 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -138,6 +138,8 @@
 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK   0x03
 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT  5

+#define IEEE80211_HT_CTL_LEN           4
+
 struct ieee80211_hdr {
        __le16 frame_control;
        __le16 duration_id;
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 23557c1..be2ab8c 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -227,8 +227,11 @@ unsigned int ieee80211_hdrlen(__le16 fc)
        if (ieee80211_is_data(fc)) {
                if (ieee80211_has_a4(fc))
                        hdrlen = 30;
-               if (ieee80211_is_data_qos(fc))
+               if (ieee80211_is_data_qos(fc)) {
                        hdrlen += IEEE80211_QOS_CTL_LEN;
+                       if (ieee80211_has_order(fc))
+                               hdrlen += IEEE80211_HT_CTL_LEN;
+               }
                goto out;
        }



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