iwlwifi: mvm: don't start BA agreement when BT is active

Otherwise WiFi would kill BT.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/rs.c b/drivers/net/wireless/iwlwifi/mvm/rs.c
index 7dfc212c4f0e..20269994d8db 100644
--- a/drivers/net/wireless/iwlwifi/mvm/rs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/rs.c
@@ -401,6 +401,17 @@ static int rs_tl_turn_on_agg_for_tid(struct iwl_mvm *mvm,
 
         load = rs_tl_get_load(lq_data, tid);
 
+        /*
+         * Don't create TX aggregation sessions when in high
+         * BT traffic, as they would just be disrupted by BT.
+         */
+        if (BT_MBOX_MSG(&mvm->last_bt_notif, 3, TRAFFIC_LOAD) >= 2) {
+                IWL_DEBUG_COEX(mvm, "BT traffic (%d), no aggregation allowed\n",
+                               BT_MBOX_MSG(&mvm->last_bt_notif,
+                                           3, TRAFFIC_LOAD));
+                return ret;
+        }
+
         if ((iwlwifi_mod_params.auto_agg) || (load > IWL_AGG_LOAD_THRESHOLD)) {
                 IWL_DEBUG_HT(mvm, "Starting Tx agg: STA: %pM tid: %d\n",
                              sta->addr, tid);