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cfg80211: move TSF into IEs

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While technically the TSF isn't an IE, it can be
necessary to distinguish between the TSF from a
beacon and a probe response, in particular in
order to know the next DTIM TBTT, as not all APs
are spec compliant wrt. TSF==0 being a DTIM TBTT
and thus the DTIM count needs to be taken into
account as well.

To allow this, move the TSF into the IE struct
so it can be known whence it came.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2013-02-05 16:54:31 +01:00
parent 83c7aa1a14
commit 8cef2c9df8
6 changed files with 37 additions and 24 deletions
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6
net/mac80211/mlme.c
View file

@ -3667,6 +3667,7 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
bool have_higher_than_11mbit;
int min_rate = INT_MAX, min_rate_index = -1;
struct ieee80211_supported_band *sband;
const struct cfg80211_bss_ies *ies;
sband = local->hw.wiphy->bands[cbss->channel->band];
@ -3710,7 +3711,10 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
/* set timing information */
sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
sdata->vif.bss_conf.sync_tsf = cbss->tsf;
rcu_read_lock();
ies = rcu_dereference(cbss->ies);
sdata->vif.bss_conf.sync_tsf = ies->tsf;
rcu_read_unlock();
sdata->vif.bss_conf.sync_device_ts = bss->device_ts;
/* tell driver about BSSID, basic rates and timing */