From: Helmut Schaa <helmut.schaa@googlemail.com>
Date: Thu, 8 Dec 2011 12:11:54 +0000 (+0100)
Subject: ieee80211: Introduce ieee80211_is_first_frag
X-Git-Tag: 1.9.5~4
X-Git-Url: https://jxself.org/git/?a=commitdiff_plain;h=9f184dae9214e7acd7e8df12a26b0e27a41eafa3;p=carl9170fw.git

ieee80211: Introduce ieee80211_is_first_frag

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
---

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 6729ad0..9f2caa2 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -557,6 +557,15 @@ static inline unsigned int ieee80211_hdrlen(__le16 fc)
         return hdrlen;
 }
 
+/**
+ * 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;