From: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Having the full RX timestamp in beacons is necessary for IBSS merge to work properly so extend the 16-bit timestamp to the full 64 bits for beacon frames (as well as when monitor mode is active.) Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Signed-off-by: Michael Buesch <mb@xxxxxxxxx> drivers/net/wireless/b43/xmit.c | 14 +++++++++----- drivers/net/wireless/b43legacy/xmit.c | 14 +++++++++----- 2 files changed, 18 insertions(+), 10 deletions(-) --- everything.orig/drivers/net/wireless/b43/xmit.c 2008-02-18 09:02:29.921823351 +0100 +++ everything/drivers/net/wireless/b43/xmit.c 2008-02-18 09:04:15.121823730 +0100 @@ -589,12 +589,16 @@ void b43_rx(struct b43_wldev *dev, struc status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT); /* - * 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. + * All frames on monitor interfaces and beacons always need a full + * 64-bit timestamp. Monitor interfaces need it for diagnostic + * purposes and beacons for IBSS merging. + * 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) { + if (((fctl & (IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) + == (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON)) || + dev->wl->radiotap_enabled) { u16 low_mactime_now; b43_tsf_read(dev, &status.mactime); --- everything.orig/drivers/net/wireless/b43legacy/xmit.c 2008-02-06 17:38:25.416098905 +0100 +++ everything/drivers/net/wireless/b43legacy/xmit.c 2008-02-18 09:04:40.471819824 +0100 @@ -546,12 +546,16 @@ void b43legacy_rx(struct b43legacy_wldev status.antenna = !!(phystat0 & B43legacy_RX_PHYST0_ANT); /* - * 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. + * All frames on monitor interfaces and beacons always need a full + * 64-bit timestamp. Monitor interfaces need it for diagnostic + * purposes and beacons for IBSS merging. + * 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) { + if (((fctl & (IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) + == (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON)) || + dev->wl->radiotap_enabled) { u16 low_mactime_now; b43legacy_tsf_read(dev, &status.mactime); ------------------------------------------------------- -- Greetings Michael. - To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html