mac80211: enable DFS with channel contexts
It is okay to enable DFS for channel contexts
based drivers as long as no combination advertises
radar detection and multi-channel operation at the
same time.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 3c61060..c76c9d7 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -2526,11 +2526,23 @@
struct ieee80211_local *local =
container_of(work, struct ieee80211_local, radar_detected_work);
struct cfg80211_chan_def chandef = local->hw.conf.chandef;
+ struct ieee80211_chanctx *ctx;
+ int num_chanctx = 0;
+
+ mutex_lock(&local->chanctx_mtx);
+ list_for_each_entry(ctx, &local->chanctx_list, list) {
+ if (ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER)
+ continue;
+
+ num_chanctx++;
+ chandef = ctx->conf.def;
+ }
+ mutex_unlock(&local->chanctx_mtx);
ieee80211_dfs_cac_cancel(local);
- if (local->use_chanctx)
- /* currently not handled */
+ if (num_chanctx > 1)
+ /* XXX: multi-channel is not supported yet */
WARN_ON(1);
else
cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL);