From e576defd1fe1ade5afe590eadd556dce5473fc26 Mon Sep 17 00:00:00 2001 From: Thomas Pedersen Date: Mon, 10 Dec 2012 14:48:03 -0800 Subject: [PATCH] ath5k: RX timestamp is reported at end of frame This is true for at least AR5213, and shouldn't be different for other ath5k PHYs. Tested on AR2413 and AR5414. Signed-off-by: Thomas Pedersen Tested-by: Bob Copeland Acked-by: Nick Kossifidis Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath5k/base.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c index 4ad40cfe9ce..30ca0a60a64 100644 --- a/drivers/net/wireless/ath/ath5k/base.c +++ b/drivers/net/wireless/ath/ath5k/base.c @@ -1336,20 +1336,9 @@ ath5k_receive_frame(struct ath5k_hw *ah, struct sk_buff *skb, * 15bit only. that means TSF extension has to be done within * 32768usec (about 32ms). it might be necessary to move this to * the interrupt handler, like it is done in madwifi. - * - * Unfortunately we don't know when the hardware takes the rx - * timestamp (beginning of phy frame, data frame, end of rx?). - * The only thing we know is that it is hardware specific... - * On AR5213 it seems the rx timestamp is at the end of the - * frame, but I'm not sure. - * - * NOTE: mac80211 defines mactime at the beginning of the first - * data symbol. Since we don't have any time references it's - * impossible to comply to that. This affects IBSS merge only - * right now, so it's not too bad... */ rxs->mactime = ath5k_extend_tsf(ah, rs->rs_tstamp); - rxs->flag |= RX_FLAG_MACTIME_START; + rxs->flag |= RX_FLAG_MACTIME_END; rxs->freq = ah->curchan->center_freq; rxs->band = ah->curchan->band; -- 2.41.0