ath10k: set a-mpdu receiver reference number

Set the a-mpdu reference number in ath10k to make it accessible in the
receivers radiotap header. Implemented as in ath9k.  The reference number is
needed for troubleshooting and research at the receivers site (e.g. to identify
mpdu's that were aggregated in an a-mpdu)

Signed-off-by: Matthias Frei <mf@frei.media>
[kvalo@qca.qualcomm.com: fix checkpatch warning, commit log cleanup]
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath10k/core.h

@@ -993,6 +993,8 @@ struct ath10k {
 		u32 reg_ack_cts_timeout_orig;
 	} fw_coverage;
 
+	u32 ampdu_reference;
+
 	void *ce_priv;
 
 	/* must be last */

drivers/net/wireless/ath/ath10k/htt_rx.c

@@ -890,16 +890,26 @@ static void ath10k_htt_rx_h_ppdu(struct ath10k *ar,
 		status->nss = 0;
 		status->encoding = RX_ENC_LEGACY;
 		status->bw = RATE_INFO_BW_20;
+
 		status->flag &= ~RX_FLAG_MACTIME_END;
 		status->flag |= RX_FLAG_NO_SIGNAL_VAL;
 
+		status->flag &= ~(RX_FLAG_AMPDU_IS_LAST);
+		status->flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN;
+		status->ampdu_reference = ar->ampdu_reference;
+
 		ath10k_htt_rx_h_signal(ar, status, rxd);
 		ath10k_htt_rx_h_channel(ar, status, rxd, vdev_id);
 		ath10k_htt_rx_h_rates(ar, status, rxd);
 	}
 
-	if (is_last_ppdu)
+	if (is_last_ppdu) {
 		ath10k_htt_rx_h_mactime(ar, status, rxd);
+
+		/* set ampdu last segment flag */
+		status->flag |= RX_FLAG_AMPDU_IS_LAST;
+		ar->ampdu_reference++;
+	}
 }
 
 static const char * const tid_to_ac[] = {