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authorJohannes Berg <johannes.berg@intel.com>2012-07-26 14:55:08 +0200
committerJohannes Berg <johannes.berg@intel.com>2012-10-16 20:22:46 +0200
commitfe57d9f5c0a2c1ef97ba8cdc42cfda5743f287b8 (patch)
treea155a8bb9165b092703bec542aeaf0b707afa392 /net/mac80211/offchannel.c
parente269d8600a8f6a9f2387b3f283bfb579a5479dc3 (diff)
mac80211: track whether to use channel contexts
Depending on the driver, channel contexts may be used or not. If they are used, the driver must have support for hardware scan and remain-on-channel; otherwise the driver must not advertise support for multiple channels. Also prohibit WDS type interfaces when channel contexts are to be used as there's no clear definition of which channel they use. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/offchannel.c')
-rw-r--r--net/mac80211/offchannel.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index 83608ac1678..9c52fc4a045 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -107,6 +107,9 @@ void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
{
struct ieee80211_sub_if_data *sdata;
+ if (WARN_ON(local->use_chanctx))
+ return;
+
/*
* notify the AP about us leaving the channel and stop all
* STA interfaces.
@@ -145,6 +148,9 @@ void ieee80211_offchannel_return(struct ieee80211_local *local,
{
struct ieee80211_sub_if_data *sdata;
+ if (WARN_ON(local->use_chanctx))
+ return;
+
mutex_lock(&local->iflist_mtx);
list_for_each_entry(sdata, &local->interfaces, list) {
if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE)