iwlwifi: mvm: disconnect if CSA time event fails scheduling

If this situation ever happens, the mac80211 state machine gets
confused because it never clears csa_active. There was a separate
bug that lead to this happening with a working connection, but it
isn't very robust to try to keep the connection up in this case.

When removing the time event the CSA essentially procedure stops,
so the safest thing to do is to disconnect in this case.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/mvm/time-event.c b/drivers/net/wireless/iwlwifi/mvm/time-event.c
index f8d6f306dd76d276b82056c9fb1a74956e78ac3c..4b81c0bf63b0a86173afde87ef2822c0dfa8860f 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/time-event.c
+++ b/drivers/net/wireless/iwlwifi/mvm/time-event.c
@@ -197,6 +197,8 @@ iwl_mvm_te_handle_notify_csa(struct iwl_mvm *mvm,
                             struct iwl_time_event_notif *notif)
 {
        if (!le32_to_cpu(notif->status)) {
+               if (te_data->vif->type == NL80211_IFTYPE_STATION)
+                       ieee80211_connection_loss(te_data->vif);
                IWL_DEBUG_TE(mvm, "CSA time event failed to start\n");
                iwl_mvm_te_clear_data(mvm, te_data);
                return;