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mac80211: fix powersave bug and clean up ieee80211_rx_bss_info 

ieee80211_rx_bss_info() deals with dtim_period setting and PS update
when associated. Move all these to another locations cleaning this
function. Also, the current implementation is buggy because when it
calls ieee80211_recalc_ps() bss_conf->dtim_period is notset properly
yet and thus nothing will happen.

Signed-off-by: Alexander Bondar <alexander.bondar@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Alexander Bondar 2013-06-03 17:29:33 +03:00 committed by Johannes Berg
parent 9b881963c1
commit 482a9c74fa
1 changed files with 9 additions and 21 deletions
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30
net/mac80211/mlme.c
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@ -2737,24 +2737,9 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
int freq;
struct ieee80211_bss *bss;
struct ieee80211_channel *channel;
bool need_ps = false;
sdata_assert_lock(sdata);
if ((sdata->u.mgd.associated &&
ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid)) ||
(sdata->u.mgd.assoc_data &&
ether_addr_equal(mgmt->bssid,
sdata->u.mgd.assoc_data->bss->bssid))) {
/* not previously set so we may need to recalc */
need_ps = sdata->u.mgd.associated && !sdata->u.mgd.dtim_period;
if (elems->tim && !elems->parse_error) {
const struct ieee80211_tim_ie *tim_ie = elems->tim;
sdata->u.mgd.dtim_period = tim_ie->dtim_period;
}
}
if (elems->ds_params)
freq = ieee80211_channel_to_frequency(elems->ds_params[0],
rx_status->band);
@ -2775,12 +2760,6 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
!ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid))
return;
if (need_ps) {
mutex_lock(&local->iflist_mtx);
ieee80211_recalc_ps(local, -1);
mutex_unlock(&local->iflist_mtx);
}
ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
elems, true);
@ -2894,6 +2873,10 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
len - baselen, false, &elems);
ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
if (elems.tim && !elems.parse_error) {
const struct ieee80211_tim_ie *tim_ie = elems.tim;
ifmgd->dtim_period = tim_ie->dtim_period;
}
ifmgd->assoc_data->have_beacon = true;
ifmgd->assoc_data->need_beacon = false;
if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
@ -3096,6 +3079,11 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
}
changed |= BSS_CHANGED_DTIM_PERIOD;
mutex_lock(&local->iflist_mtx);
ieee80211_recalc_ps(local, -1);
mutex_unlock(&local->iflist_mtx);
ieee80211_recalc_ps_vif(sdata);
}