From: Thomas Pedersen Date: Wed, 2 Jan 2013 22:55:16 +0000 (-0800) Subject: mac80211_hwsim: fix tsf adjustment X-Git-Tag: v3.12-rc1~1247^2~28^2^2~26^2~143 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=45034bfb8c9ecc62db40b438bea7fe728ac8facf;p=kernel%2Fkernel-generic.git mac80211_hwsim: fix tsf adjustment Make hwsim TSF offset adjustments cumulative and relative to the fake PHY TSF. Now adding 1000us, then adding -1000us doesn't result in a tsf_offset of -1000. Also the beacon timestamp can now correctly be expressed as (tsf + data->tsf_offset), which will be done in a later patch. Signed-off-by: Thomas Pedersen Signed-off-by: Johannes Berg --- diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index d248a4c..807d713 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -361,7 +361,7 @@ struct mac80211_hwsim_data { int power_level; /* difference between this hw's clock and the real clock, in usecs */ - u64 tsf_offset; + s64 tsf_offset; }; @@ -427,9 +427,10 @@ static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u64 tsf) { struct mac80211_hwsim_data *data = hw->priv; - struct timeval tv = ktime_to_timeval(ktime_get_real()); - u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec; - data->tsf_offset = tsf - now; + u64 now = mac80211_hwsim_get_tsf(hw, vif); + s64 delta = tsf - now; + + data->tsf_offset += delta; } static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,