Index: head/sys/dev/iwm/if_iwmvar.h
===================================================================
--- head/sys/dev/iwm/if_iwmvar.h
+++ head/sys/dev/iwm/if_iwmvar.h
@@ -496,14 +496,12 @@
 		uint8_t	pad[IEEE80211_RADIOTAP_HDRLEN];
 	} sc_rxtapu;
 #define sc_rxtap	sc_rxtapu.th
-	int			sc_rxtap_len;
 
 	union {
 		struct iwm_tx_radiotap_header th;
 		uint8_t	pad[IEEE80211_RADIOTAP_HDRLEN];
 	} sc_txtapu;
 #define sc_txtap	sc_txtapu.th
-	int			sc_txtap_len;
 
 	int		sc_max_rssi;
 };
Index: head/sys/dev/otus/if_otus.c
===================================================================
--- head/sys/dev/otus/if_otus.c
+++ head/sys/dev/otus/if_otus.c
@@ -1712,7 +1712,6 @@
 			break;
 		}
 		mb.m_data = (caddr_t)tap;
-		mb.m_len = sc->sc_rxtap_len;
 		mb.m_next = m;
 		mb.m_nextpkt = NULL;
 		mb.m_type = 0;
Index: head/sys/dev/otus/if_otusreg.h
===================================================================
--- head/sys/dev/otus/if_otusreg.h
+++ head/sys/dev/otus/if_otusreg.h
@@ -1017,14 +1017,12 @@
 		uint8_t	pad[64];
 	}				sc_rxtapu;
 #define sc_rxtap	sc_rxtapu.th
-	int				sc_rxtap_len;
 
 	union {
 		struct otus_tx_radiotap_header th;
 		uint8_t	pad[64];
 	}				sc_txtapu;
 #define sc_txtap	sc_txtapu.th
-	int				sc_txtap_len;
 };
 
 #endif	/* __IF_OTUSREG_H__ */
Index: head/sys/dev/ral/rt2560var.h
===================================================================
--- head/sys/dev/ral/rt2560var.h
+++ head/sys/dev/ral/rt2560var.h
@@ -146,10 +146,8 @@
 	int			nb_ant;
 
 	struct rt2560_rx_radiotap_header sc_rxtap;
-	int			sc_rxtap_len;
-
 	struct rt2560_tx_radiotap_header sc_txtap;
-	int			sc_txtap_len;
+
 #define RT2560_F_INPUT_RUNNING	0x1
 #define RT2560_F_RUNNING	0x2
 	int			sc_flags;
Index: head/sys/dev/ral/rt2661var.h
===================================================================
--- head/sys/dev/ral/rt2661var.h
+++ head/sys/dev/ral/rt2661var.h
@@ -157,9 +157,7 @@
 	int				dwelltime;
 
 	struct rt2661_rx_radiotap_header sc_rxtap;
-	int				sc_rxtap_len;
 	struct rt2661_tx_radiotap_header sc_txtap;
-	int				sc_txtap_len;
 };
 
 int	rt2661_attach(device_t, int);
Index: head/sys/dev/ral/rt2860var.h
===================================================================
--- head/sys/dev/ral/rt2860var.h
+++ head/sys/dev/ral/rt2860var.h
@@ -194,9 +194,7 @@
 	uint32_t			txpow40mhz_5ghz[5];
 
 	struct rt2860_rx_radiotap_header sc_rxtap;
-	int				sc_rxtap_len;
 	struct rt2860_tx_radiotap_header sc_txtap;
-	int				sc_txtap_len;
 };
 
 int	rt2860_attach(device_t, int);
Index: head/sys/dev/usb/wlan/if_rsureg.h
===================================================================
--- head/sys/dev/usb/wlan/if_rsureg.h
+++ head/sys/dev/usb/wlan/if_rsureg.h
@@ -793,12 +793,10 @@
 		uint8_t	pad[64];
 	}				sc_rxtapu;
 #define sc_rxtap	sc_rxtapu.th
-	int				sc_rxtap_len;
 
 	union {
 		struct rsu_tx_radiotap_header th;
 		uint8_t	pad[64];
 	}				sc_txtapu;
 #define sc_txtap	sc_txtapu.th
-	int				sc_txtap_len;
 };
Index: head/sys/dev/usb/wlan/if_runvar.h
===================================================================
--- head/sys/dev/usb/wlan/if_runvar.h
+++ head/sys/dev/usb/wlan/if_runvar.h
@@ -253,14 +253,12 @@
 		uint8_t	pad[64];
 	}				sc_rxtapu;
 #define sc_rxtap	sc_rxtapu.th
-	int				sc_rxtap_len;
 
 	union {
 		struct run_tx_radiotap_header th;
 		uint8_t	pad[64];
 	}				sc_txtapu;
 #define sc_txtap	sc_txtapu.th
-	int				sc_txtap_len;
 };
 
 #define	RUN_LOCK(sc)		mtx_lock(&(sc)->sc_mtx)
Index: head/sys/dev/usb/wlan/if_uathvar.h
===================================================================
--- head/sys/dev/usb/wlan/if_uathvar.h
+++ head/sys/dev/usb/wlan/if_uathvar.h
@@ -230,9 +230,7 @@
 #define	UATH_FLAG_INITDONE		(1 << 2)
 
 	struct	uath_rx_radiotap_header	sc_rxtap;
-	int				sc_rxtap_len;
 	struct	uath_tx_radiotap_header	sc_txtap;
-	int				sc_txtap_len;
 };
 
 #define	UATH_LOCK(sc)			mtx_lock(&(sc)->sc_mtx)
Index: head/sys/dev/usb/wlan/if_upgtvar.h
===================================================================
--- head/sys/dev/usb/wlan/if_upgtvar.h
+++ head/sys/dev/usb/wlan/if_upgtvar.h
@@ -472,9 +472,7 @@
 
 	/* BPF  */
 	struct upgt_rx_radiotap_header	sc_rxtap;
-	int				sc_rxtap_len;
 	struct upgt_tx_radiotap_header	sc_txtap;
-	int				sc_txtap_len;
 };
 
 #define UPGT_LOCK(sc)		mtx_lock(&(sc)->sc_mtx)
Index: head/sys/dev/usb/wlan/if_uralvar.h
===================================================================
--- head/sys/dev/usb/wlan/if_uralvar.h
+++ head/sys/dev/usb/wlan/if_uralvar.h
@@ -125,10 +125,7 @@
 	int				nb_ant;
 
 	struct ural_rx_radiotap_header	sc_rxtap;
-	int				sc_rxtap_len;
-
 	struct ural_tx_radiotap_header	sc_txtap;
-	int				sc_txtap_len;
 };
 
 #define RAL_LOCK(sc)		mtx_lock(&(sc)->sc_mtx)
Index: head/sys/dev/usb/wlan/if_urtwnvar.h
===================================================================
--- head/sys/dev/usb/wlan/if_urtwnvar.h
+++ head/sys/dev/usb/wlan/if_urtwnvar.h
@@ -195,12 +195,9 @@
 	struct usb_xfer			*sc_xfer[URTWN_N_TRANSFER];
 
 	struct urtwn_rx_radiotap_header	sc_rxtap;
-	int				sc_rxtap_len;
-
 	struct urtwn_tx_radiotap_header	sc_txtap;
-	int				sc_txtap_len;
 };
 
 #define	URTWN_LOCK(sc)			mtx_lock(&(sc)->sc_mtx)
 #define	URTWN_UNLOCK(sc)		mtx_unlock(&(sc)->sc_mtx)
-#define	URTWN_ASSERT_LOCKED(sc)		mtx_assert(&(sc)->sc_mtx, MA_OWNED)
\ No newline at end of file
+#define	URTWN_ASSERT_LOCKED(sc)		mtx_assert(&(sc)->sc_mtx, MA_OWNED)
Index: head/sys/dev/usb/wlan/if_urtwvar.h
===================================================================
--- head/sys/dev/usb/wlan/if_urtwvar.h
+++ head/sys/dev/usb/wlan/if_urtwvar.h
@@ -178,9 +178,7 @@
 	struct urtw_stats		sc_stats;
 
 	struct	urtw_rx_radiotap_header	sc_rxtap;
-	int				sc_rxtap_len;
 	struct	urtw_tx_radiotap_header	sc_txtap;
-	int				sc_txtap_len;
 };
 
 #define URTW_LOCK(sc)			mtx_lock(&(sc)->sc_mtx)
Index: head/sys/dev/usb/wlan/if_zydreg.h
===================================================================
--- head/sys/dev/usb/wlan/if_zydreg.h
+++ head/sys/dev/usb/wlan/if_zydreg.h
@@ -1304,9 +1304,7 @@
 	struct zyd_cmd		sc_ibuf;
 
 	struct zyd_rx_radiotap_header	sc_rxtap;
-	int			sc_rxtap_len;
 	struct zyd_tx_radiotap_header	sc_txtap;
-	int			sc_txtap_len;
 };
 
 #define	ZYD_LOCK(sc)		mtx_lock(&(sc)->sc_mtx)