iwlwifi: mvm: allow to disable beacon filtering for AP/GO interface

When in AP mode we need to filter in beacons from other APs to update HT
operation mode. As a power optimization the beacons are filtered out when
there are no associated stations. As a result, when there are no
associated stations, we will not update the HT operation mode until a
station connects.
Add a debugfs parameter that allows to disable this optimization.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
index 005cc09..c529e53 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
@@ -1548,6 +1548,9 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
                                 mvm->debugfs_dir,
                                 &mvm->scan_iter_notif_enabled))
                goto err;
+       if (!debugfs_create_bool("drop_bcn_ap_mode", S_IRUSR | S_IWUSR,
+                                mvm->debugfs_dir, &mvm->drop_bcn_ap_mode))
+               goto err;
 
 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
        if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING) {

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
index 62927f5..535134d 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
@@ -744,7 +744,7 @@ static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
                 * wake-ups.
                 */
                cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
-               if (mvmvif->ap_assoc_sta_count) {
+               if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
                        cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
                        IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
                } else {

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index 747f7eb..ebe37bb 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -859,6 +859,12 @@ struct iwl_mvm {
 
        u32 ciphers[6];
        struct iwl_mvm_tof_data tof_data;
+
+       /*
+        * Drop beacons from other APs in AP mode when there are no connected
+        * clients.
+        */
+       bool drop_bcn_ap_mode;
 };
 
 /* Extract MVM priv from op_mode and _hw */

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
index 325ff8a..09a94a5 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
@@ -492,6 +492,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
        }
        mvm->sf_state = SF_UNINIT;
        mvm->cur_ucode = IWL_UCODE_INIT;
+       mvm->drop_bcn_ap_mode = true;
 
        mutex_init(&mvm->mutex);
        mutex_init(&mvm->d0i3_suspend_mutex);