From 3c898db70a6a3a27c629bd52e57fe810ffa01dee Mon Sep 17 00:00:00 2001
From: Sam Leffler <sam@FreeBSD.org>
Date: Sun, 28 Dec 2003 06:58:52 +0000
Subject: [PATCH] update radiotap support to reflect recent changes:

o add xmit rate
o drop rx time
o add rx flags
---
 sys/dev/wi/if_wi.c    | 12 +++++++-----
 sys/dev/wi/if_wireg.h | 15 +++++++--------
 2 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/sys/dev/wi/if_wi.c b/sys/dev/wi/if_wi.c
index a99f96f6e6f..679213641d5 100644
--- a/sys/dev/wi/if_wi.c
+++ b/sys/dev/wi/if_wi.c
@@ -491,8 +491,7 @@ wi_attach(device_t dev)
 	sc->sc_tx_th.wt_ihdr.it_present = WI_TX_RADIOTAP_PRESENT;
 
 	sc->sc_rx_th.wr_ihdr.it_len = sizeof(sc->sc_rx_th);
-	sc->sc_rx_th.wr_ihdr.it_present = WI_RX_RADIOTAP_PRESENT0;
-	sc->sc_rx_th.wr_present1 = WI_RX_RADIOTAP_PRESENT1;
+	sc->sc_rx_th.wr_ihdr.it_present = WI_RX_RADIOTAP_PRESENT;
 #endif
 	return (0);
 }
@@ -947,6 +946,8 @@ wi_start(struct ifnet *ifp)
 		frmhdr.wi_dat_len = htole16(m0->m_pkthdr.len);
 #if NBPFILTER > 0
 		if (sc->sc_drvbpf) {
+			sc->sc_tx_th.wt_rate =
+				ni->ni_rates.rs_rates[ni->ni_txrate];
 			bpf_mtap2(sc->sc_drvbpf,
 				&sc->sc_tx_th, sizeof(sc->sc_tx_th), m0);
 		}
@@ -1487,14 +1488,15 @@ wi_rx_intr(struct wi_softc *sc)
 
 #if NBPFILTER > 0
 	if (sc->sc_drvbpf) {
+		/* XXX replace divide by table */
 		sc->sc_rx_th.wr_rate = frmhdr.wi_rx_rate / 5;
 		sc->sc_rx_th.wr_antsignal =
 			WI_RSSI_TO_DBM(sc, frmhdr.wi_rx_signal);
 		sc->sc_rx_th.wr_antnoise =
 			WI_RSSI_TO_DBM(sc, frmhdr.wi_rx_silence);
-		sc->sc_rx_th.wr_time =
-			htole32((frmhdr.wi_rx_tstamp1 << 16) |
-				frmhdr.wi_rx_tstamp0);
+		sc->sc_rx_th.wr_flags = 0;
+		if (frmhdr.wi_status & WI_STAT_PCF)
+			sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_CFP;
 		bpf_mtap2(sc->sc_drvbpf,
 			&sc->sc_rx_th, sizeof(sc->sc_rx_th), m);
 	}
diff --git a/sys/dev/wi/if_wireg.h b/sys/dev/wi/if_wireg.h
index 5d17211391d..03c6e22de15 100644
--- a/sys/dev/wi/if_wireg.h
+++ b/sys/dev/wi/if_wireg.h
@@ -684,33 +684,32 @@ struct wi_frame {
 /*
  * Radio capture format for Prism.
  */
-#define WI_RX_RADIOTAP_PRESENT0 \
+#define WI_RX_RADIOTAP_PRESENT \
 	((1 << IEEE80211_RADIOTAP_FLAGS) | \
 	 (1 << IEEE80211_RADIOTAP_RATE) | \
 	 (1 << IEEE80211_RADIOTAP_CHANNEL) | \
 	 (1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL) | \
-	 (1 << IEEE80211_RADIOTAP_DB_ANTNOISE) | \
-	 (1 << IEEE80211_RADIOTAP_EXT))
-
-#define WI_RX_RADIOTAP_PRESENT1	(1 << (IEEE80211_RADIOTAP_TIME - 32))
+	 (1 << IEEE80211_RADIOTAP_DB_ANTNOISE))
 
 struct wi_rx_radiotap_header {
 	struct ieee80211_radiotap_header wr_ihdr;
-	u_int32_t	wr_present1;
 	u_int8_t	wr_flags;
 	u_int8_t	wr_rate;
 	u_int16_t	wr_chan_freq;
 	u_int16_t	wr_chan_flags;
 	u_int8_t	wr_antsignal;
 	u_int8_t	wr_antnoise;
-	u_int32_t	wr_time;
 };
 
 #define WI_TX_RADIOTAP_PRESENT \
-	((1 << IEEE80211_RADIOTAP_CHANNEL))
+	((1 << IEEE80211_RADIOTAP_FLAGS) | \
+	 (1 << IEEE80211_RADIOTAP_RATE) | \
+	 (1 << IEEE80211_RADIOTAP_CHANNEL))
 
 struct wi_tx_radiotap_header {
 	struct ieee80211_radiotap_header wt_ihdr;
+	u_int8_t	wt_flags;
+	u_int8_t	wt_rate;
 	u_int16_t	wt_chan_freq;
 	u_int16_t	wt_chan_flags;
 };