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>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 9a058e58d53e..8fa00adcb8c0 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -882,6 +882,8 @@ struct ieee80211_local {
 
         bool wiphy_ciphers_allocated;
 
+        bool use_chanctx;
+
         /* protects the aggregated multicast list and filter calls */
         spinlock_t filter_lock;