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mac80211: use station mutex in configuration 

There's no need to use RCU here, we can just lock
the station mutex instead. This allows the code
to sleep, which is necessary for later patches.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2011-12-14 12:20:29 +01:00 committed by John W. Linville
parent 92b62f28d0
commit 87be1e1e00
1 changed files with 6 additions and 6 deletions
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12
net/mac80211/cfg.c
View File

@ -954,11 +954,11 @@ static int ieee80211_change_station(struct wiphy *wiphy,
struct sta_info *sta;
struct ieee80211_sub_if_data *vlansdata;
rcu_read_lock();
mutex_lock(&local->sta_mtx);
sta = sta_info_get_bss(sdata, mac);
if (!sta) {
rcu_read_unlock();
mutex_unlock(&local->sta_mtx);
return -ENOENT;
}
@ -966,7 +966,7 @@ static int ieee80211_change_station(struct wiphy *wiphy,
if (sdata->vif.type == NL80211_IFTYPE_STATION &&
params->supported_rates &&
!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
rcu_read_unlock();
mutex_unlock(&local->sta_mtx);
return -EINVAL;
}
@ -975,13 +975,13 @@ static int ieee80211_change_station(struct wiphy *wiphy,
if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
vlansdata->vif.type != NL80211_IFTYPE_AP) {
rcu_read_unlock();
mutex_unlock(&local->sta_mtx);
return -EINVAL;
}
if (params->vlan->ieee80211_ptr->use_4addr) {
if (vlansdata->u.vlan.sta) {
rcu_read_unlock();
mutex_unlock(&local->sta_mtx);
return -EBUSY;
}
@ -997,7 +997,7 @@ static int ieee80211_change_station(struct wiphy *wiphy,
if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
rate_control_rate_init(sta);
rcu_read_unlock();
mutex_unlock(&local->sta_mtx);
if (sdata->vif.type == NL80211_IFTYPE_STATION &&
params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))