From e716251d776ce92eb5169522f565ada3deed2a2a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 4 Dec 2013 23:18:37 +0100 Subject: [PATCH] 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 --- net/mac80211/cfg.c | 4 +--- net/mac80211/sta_info.c | 8 ++++++-- net/mac80211/sta_info.h | 8 +++++++- 3 files changed, 14 insertions(+), 6 deletions(-) diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index e11bdb6..18b56fb 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 89d449d..4576ba0 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 f6081e5..d77ff70 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, -- 2.7.4