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authorJohannes Berg <johannes.berg@intel.com>2013-12-05 02:18:37 +0400
committerJohannes Berg <johannes.berg@intel.com>2013-12-16 14:29:47 +0400
commite716251d776ce92eb5169522f565ada3deed2a2a (patch)
tree70615090a03c61e6f0d3f29b8b93e54cd8622f90 /net/mac80211
parentd778207b06ac1becd012eb689dafdf85feebb179 (diff)
downloadlinux-e716251d776ce92eb5169522f565ada3deed2a2a.tar.xz
mac80211: optimise mixed AP/VLAN station removal
Teach sta_info_flush() to optionally also remove stations from all VLANs associated with an AP interface to optimise the station removal (in particular, synchronize_net().) To not have to add the vlans argument throughout, do some refactoring. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/cfg.c4
-rw-r--r--net/mac80211/sta_info.c8
-rw-r--r--net/mac80211/sta_info.h8
3 files changed, 14 insertions, 6 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index e11bdb63167a..18b56fb7911e 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1097,9 +1097,7 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
if (old_probe_resp)
kfree_rcu(old_probe_resp, rcu_head);
- list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
- sta_info_flush(vlan);
- sta_info_flush(sdata);
+ __sta_info_flush(sdata, true);
synchronize_net();
list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
ieee80211_free_keys(vlan);
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 89d449d0de6d..4576ba0ff221 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -960,7 +960,7 @@ void sta_info_stop(struct ieee80211_local *local)
}
-int sta_info_flush(struct ieee80211_sub_if_data *sdata)
+int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans)
{
struct ieee80211_local *local = sdata->local;
struct sta_info *sta, *tmp;
@@ -969,9 +969,13 @@ int sta_info_flush(struct ieee80211_sub_if_data *sdata)
might_sleep();
+ WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP);
+ WARN_ON(vlans && !sdata->bss);
+
mutex_lock(&local->sta_mtx);
list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
- if (sdata == sta->sdata) {
+ if (sdata == sta->sdata ||
+ (vlans && sdata->bss == sta->sdata->bss)) {
if (!WARN_ON(__sta_info_destroy_part1(sta)))
list_add(&sta->free_list, &free_list);
ret++;
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index f6081e574a28..d77ff7090630 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -613,8 +613,14 @@ void sta_info_stop(struct ieee80211_local *local);
* Returns the number of removed STA entries.
*
* @sdata: sdata to remove all stations from
+ * @vlans: if the given interface is an AP interface, also flush VLANs
*/
-int sta_info_flush(struct ieee80211_sub_if_data *sdata);
+int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans);
+
+static inline int sta_info_flush(struct ieee80211_sub_if_data *sdata)
+{
+ return __sta_info_flush(sdata, false);
+}
void sta_set_rate_info_tx(struct sta_info *sta,
const struct ieee80211_tx_rate *rate,