diff mbox

[v2,1/4] mac80211_hwsim: fix tsf adjustment

Message ID 1357167319-13338-1-git-send-email-thomas@cozybit.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Thomas Pedersen Jan. 2, 2013, 10:55 p.m. UTC 
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 <thomas@cozybit.com>
---
 drivers/net/wireless/mac80211_hwsim.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

Comments

Johannes Berg Jan. 4, 2013, 1:06 p.m. UTC | #1 
I applied 1-3.

johannes

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diff mbox

Patch

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index ff90855..59761fb 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -357,7 +357,7 @@  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;
 };
 
 
@@ -423,9 +423,10 @@  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,