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mac80211: compute chanctx refcount on-the-fly

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It doesn't make much sense to store refcount in
the chanctx structure. One still needs to hold
chanctx_mtx to get the value safely. Besides,
refcount isn't on performance critical paths.

This will make implementing chanctx reservation
refcounting a little easier.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Michal Kazior
2014-04-09 15:29:33 +02:00
committed by Johannes Berg
parent 2b32713d72
commit c0166da9fe
4 changed files with 49 additions and 17 deletions
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2
net/mac80211/mlme.c
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@ -1089,7 +1089,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
}
chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf),
struct ieee80211_chanctx, conf);
if (chanctx->refcount > 1) {
if (ieee80211_chanctx_refcount(local, chanctx) > 1) {
sdata_info(sdata,
"channel switch with multiple interfaces on the same channel, disconnecting\n");
ieee80211_queue_work(&local->hw,