[PATCH] ath9k: report A-MPDU status

[PATCH] ath9k: report A-MPDU status

[Christian Lamparter]

The ath9k hardware reports whenever an frame was part
of an A-MPDU. MAC80211 already provides the necessary
API to pass this additional information along to
whomever needs it.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
---
No locking necessary. The ampdu_ref var is only
read and updated within the rx tasklet. 
---
 drivers/net/wireless/ath/ath9k/ath9k.h |    2 ++
 drivers/net/wireless/ath/ath9k/recv.c  |   20 ++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 67df864..21e2e42 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -319,6 +319,8 @@ struct ath_rx {
 	struct ath_rx_edma rx_edma[ATH9K_RX_QUEUE_MAX];
 
 	struct sk_buff *frag;
+
+	u32 ampdu_ref;
 };
 
 int ath_startrecv(struct ath_softc *sc);
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index 2af6f19..87497f3 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -1123,6 +1123,24 @@ static int ath_process_fft(struct ath_softc *sc, struct ieee80211_hdr *hdr,
 #endif
 }
 
+static void ath9k_apply_ampdu_details(struct ath_softc *sc,
+	struct ath_rx_status *rs, struct ieee80211_rx_status *rxs)
+{
+	if (rs->rs_isaggr) {
+		rxs->flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN;
+
+		rxs->ampdu_reference = sc->rx.ampdu_ref;
+
+		if (!rs->rs_moreaggr) {
+			rxs->flag |= RX_FLAG_AMPDU_IS_LAST;
+			sc->rx.ampdu_ref++;
+		}
+
+		if (rs->rs_flags & ATH9K_RX_DELIM_CRC_PRE)
+			rxs->flag |= RX_FLAG_AMPDU_DELIM_CRC_ERROR;
+	}
+}
+
 int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
 {
 	struct ath_buf *bf;
@@ -1329,6 +1347,8 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
 		if ((ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) && sc->ant_rx == 3)
 			ath_ant_comb_scan(sc, &rs);
 
+		ath9k_apply_ampdu_details(sc, &rs, rxs);
+
 		ieee80211_rx(hw, skb);
 
 requeue_drop_frag:
-- 
1.7.10.4