ieee80211: Introduce ieee80211_is_first_frag
authorHelmut Schaa <helmut.schaa@googlemail.com>
Thu, 8 Dec 2011 12:11:54 +0000 (13:11 +0100)
committerJohn W. Linville <linville@tuxdriver.com>
Tue, 13 Dec 2011 20:30:40 +0000 (15:30 -0500)
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
include/linux/ieee80211.h

index 17f2a768e2ada1676fed7e1a76f7d06978f131ba..210e2c3255342f7cf6546ca0e1718fe6dc0e2dd4 100644 (file)
@@ -544,6 +544,15 @@ static inline int ieee80211_is_qos_nullfunc(__le16 fc)
               cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 }
 
+/**
+ * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
+ * @seq_ctrl: frame sequence control bytes in little-endian byteorder
+ */
+static inline int ieee80211_is_first_frag(__le16 seq_ctrl)
+{
+       return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
+}
+
 struct ieee80211s_hdr {
        u8 flags;
        u8 ttl;