iwlagn: set BT IGNORE for some frames

The BT ignore bit should be set when transmitting
auth, assoc response and eap frames.

Also, scanning should set the BT ignore bit for the
probe request transmission; Note that we only use
the non-shared antenna.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index eedd71f5506b..e1b5250ea637 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -1290,6 +1290,12 @@ void iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
                         rate = IWL_RATE_1M_PLCP;
                         rate_flags = RATE_MCS_CCK_MSK;
                 }
+                /*
+                 * Internal scans are passive, so we can indiscriminately set
+                 * the BT ignore flag on 2.4 GHz since it applies to TX only.
+                 */
+                if (priv->cfg->advanced_bt_coexist)
+                        scan->tx_cmd.tx_flags |= TX_CMD_FLG_IGNORE_BT;
                 scan->good_CRC_th = IWL_GOOD_CRC_TH_DISABLED;
                 break;
         case IEEE80211_BAND_5GHZ: