From d007b7f42e2a3a2b95ef43e8cc1a3dfe66b19736 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes@sipsolutions.net>
Date: Mon, 18 Feb 2008 18:53:55 +0100
Subject: [PATCH] b43(legacy): include full timestamp in beacon frames
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@sipsolutions.net>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/b43/xmit.c | 14 +++++++++-----
drivers/net/wireless/b43legacy/xmit.c | 14 +++++++++-----
2 files changed, 18 insertions(+), 10 deletions(-)
diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c
index 4014b6c8272b..187c11bee0f1 100644
--- a/drivers/net/wireless/b43/xmit.c
+++ b/drivers/net/wireless/b43/xmit.c
@@ -589,12 +589,16 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
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);
diff --git a/drivers/net/wireless/b43legacy/xmit.c b/drivers/net/wireless/b43legacy/xmit.c
index 47e130e9fdf2..dcad2491a606 100644
--- a/drivers/net/wireless/b43legacy/xmit.c
+++ b/drivers/net/wireless/b43legacy/xmit.c
@@ -546,12 +546,16 @@ void b43legacy_rx(struct b43legacy_wldev *dev,
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);
--
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