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Diffstat (limited to 'include/net/ieee80211_radiotap.h')
-rw-r--r--include/net/ieee80211_radiotap.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/net/ieee80211_radiotap.h b/include/net/ieee80211_radiotap.h
index a0c2b41a24d7..dfd8bf66ce27 100644
--- a/include/net/ieee80211_radiotap.h
+++ b/include/net/ieee80211_radiotap.h
@@ -40,6 +40,7 @@
#include <linux/if_ether.h>
#include <linux/kernel.h>
+#include <asm/unaligned.h>
/* Radiotap header version (from official NetBSD feed) */
#define IEEE80211RADIOTAP_VERSION "1.5"
@@ -255,4 +256,13 @@ enum ieee80211_radiotap_type {
(((x) == 14) ? 2484 : ((x) * 5) + 2407) : \
((x) + 1000) * 5)
+/* helpers */
+static inline int ieee80211_get_radiotap_len(unsigned char *data)
+{
+ struct ieee80211_radiotap_header *hdr =
+ (struct ieee80211_radiotap_header *)data;
+
+ return le16_to_cpu(get_unaligned(&hdr->it_len));
+}
+
#endif /* IEEE80211_RADIOTAP_H */