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| author | Christian Lamparter <chunkeey@googlemail.com> | 2012-11-24 14:23:25 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-11-26 20:54:21 +0100 |
| commit | 725d255e70a98fc5dc0f4ce7fa173c33c8515a07 (patch) | |
| tree | de5920a8c6dd8a34c165fafbd83f07b61565cdc3 /drivers/net/wireless/p54 | |
| parent | iwlwifi: initialize rx_status (diff) | |
| download | linux-725d255e70a98fc5dc0f4ce7fa173c33c8515a07.tar.xz linux-725d255e70a98fc5dc0f4ce7fa173c33c8515a07.zip | |
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: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/p54')
| -rw-r--r-- | drivers/net/wireless/p54/txrx.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/wireless/p54/txrx.c b/drivers/net/wireless/p54/txrx.c index 8ae982bd7cf3..12f0a34477f2 100644 --- a/drivers/net/wireless/p54/txrx.c +++ b/drivers/net/wireless/p54/txrx.c @@ -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]; |