diff options
Diffstat (limited to 'drivers/net/wireless/b43/xmit.c')
| -rw-r--r-- | drivers/net/wireless/b43/xmit.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c index a455a6beac4a..e60e54d59ab1 100644 --- a/drivers/net/wireless/b43/xmit.c +++ b/drivers/net/wireless/b43/xmit.c @@ -525,8 +525,24 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr) else status.rate = b43_plcp_get_bitrate_cck(plcp); status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT); - status.mactime = mactime; - status.flag |= RX_FLAG_TSFT; + + /* + * If monitors are present get full 64-bit timestamp. This + * code assumes we get to process the packet within 16 bits + * of timestamp, i.e. about 65 milliseconds after the PHY + * received the first symbol. + */ + if (dev->wl->radiotap_enabled) { + u16 low_mactime_now; + + b43_tsf_read(dev, &status.mactime); + low_mactime_now = status.mactime; + status.mactime = status.mactime & ~0xFFFFULL; + status.mactime += mactime; + if (low_mactime_now <= mactime) + status.mactime -= 0x10000; + status.flag |= RX_FLAG_TSFT; + } chanid = (chanstat & B43_RX_CHAN_ID) >> B43_RX_CHAN_ID_SHIFT; switch (chanstat & B43_RX_CHAN_PHYTYPE) { |