Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 725d255e authored by Christian Lamparter's avatar Christian Lamparter Committed by John W. Linville
Browse files

p54: improve TSF timestamp precision 



The LMAC API states that the TSF clock value of
every rx'ed frame is a "usec accurate timestamp
of the hardware clock at the end of frame
(before OFDM SIFS EOF padding)".

Signed-off-by: default avatarChristian Lamparter <chunkeey@googlemail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 1d815ef4

drivers/net/wireless/p54/txrx.c

+5 −1
Original line number Diff line number Diff line
@@ -369,7 +369,11 @@ static int p54_rx_data(struct p54_common *priv, struct sk_buff *skb) 
	rx_status->mactime = ((u64)priv->tsf_high32) << 32 | tsf32;

	priv->tsf_low32 = tsf32;



	rx_status->flag |= RX_FLAG_MACTIME_START;

	/* LMAC API Page 10/29 - s_lm_data_in - clock

	 * "usec accurate timestamp of hardware clock

	 * at end of frame (before OFDM SIFS EOF padding"

	 */

	rx_status->flag |= RX_FLAG_MACTIME_END;



	if (hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))

		header_len += hdr->align[0];